CN103282095A - Dust collector control system - Google Patents
Dust collector control system Download PDFInfo
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- CN103282095A CN103282095A CN2011800483745A CN201180048374A CN103282095A CN 103282095 A CN103282095 A CN 103282095A CN 2011800483745 A CN2011800483745 A CN 2011800483745A CN 201180048374 A CN201180048374 A CN 201180048374A CN 103282095 A CN103282095 A CN 103282095A
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- condition
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- clean cycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
Abstract
A method of controlling a cleaning cycle of a dust filter system comprising one or more filters, the cleaning cycle having start and stop criterion associated with a characteristic of the dust filter system, the method comprising adjusting at least one of the start and stop criteria in response to a predefined state of the dust filter system being determined.
Description
Technical field
The disclosure relates to a kind of air filtering system, especially relates to a kind of dust-collector and is used for supervision and the control system of dust-collector.
Background technology
Dust-collector uses in multiple industry such as big workshop (just school, hospital, the Art Museum), furniture manufacturing, cement, chemistry, food industry between for example mining, pharmacy, power industry, sawmilling, dolly.In history, the filtration of air is finished by using washer and deduster in the commercial location.These filters more are applicable in the high-temperature service.
Dust-collector can use tubular filter bag or cartridge filter to keep tiny dust granule.A kind of popular filter type is by textile.Fabric filter has higher efficient than other filter types aspect the discharging of dust collection and clean air.Dust-collector turns round as having a plurality of huge vacuum cleaners that are called the collecting bag of baghouse.Dust granule is inhaled in the textile bags filter and by the wall of textile bags and limits.
In order to make sack with the horizontal filtering of optimum, sack must be cleaned termly.For continuous filtered air is provided, the dust granule that is filtered the device restriction need be removed in equipment operation.In one approach, this realizes by shaking filter termly.Filter (for example between per 5 seconds to per 15 seconds) is mechanically shaken, or by by compression air blast.Then dust granule from filter, land and below be collected in the funnel of regular emptying.Owing to shake the wearing and tearing that can cause filter unnecessary, therefore avoid too much shaking as much as possible.
Summary of the invention
Disclosed embodiment provides the method for the clean cycle of the dust filtration system that a kind of control comprises one or more filters, and clean cycle has entry condition and the stop condition that is associated with the feature of dust filtration system, and this method comprises:
Regulate at least one condition in entry condition and the stop condition in response to the predetermined state of the dust filtration system that is determined.
In one form, the pressure differential of one or more filters of the leap dust filtration system that is characterized as detection that is used at least one condition of entry condition and stop condition.
In one form, entry condition has reached first predetermined value for the pressure differential of crossing over one or more filters.In one form, stop condition is lower than second predetermined value for the pressure differential of crossing over one or more filters has dropped to, and described second predetermined value is lower than first predetermined value.
In one form, the value of at least one condition in entry condition and the stop condition in response to former or current clean cycle surpass predetermined value the duration regulate.
In one form, starting pressure condition and the value that stops at least one condition in the pressure condition in response at least one filter to filtration system reach predetermined age and/or the state of filtration determine regulate.
In one form, in response to current clean cycle the duration when surpassing predetermined value to the adjusting of the value of stop condition, regulate the value of entry condition with predetermined amount.
In one form, the value of at least one condition in entry condition and the stop condition increases with fixing amount.In another form, the value of at least one condition in entry condition and the stop condition increases with the particle size of the state of life-span of depending on filter, filter, the material that is filtered and at least one the amount in the system load.
In another aspect, disclosed embodiment is provided for comprising the controller of the dust filtration system of one or more filters, controller is arranged as implements to have the entry condition that is associated with the feature of dust filtration system and the clean cycle of stop condition, and controller also is arranged as determines to regulate at least one condition in entry condition and the stop condition in response to the predetermined state of dust filtration system.
In one form, the pressure differential of one or more filters of the leap dust filtration system that is characterized as detection that is used at least one condition of entry condition and stop condition.
In one form, entry condition is that pressure differential has reached first predetermined value.In one form, stop condition is that pressure differential has been reduced to second predetermined value down, and described second predetermined value is lower than first predetermined value.
In one form, controller be arranged as in response to former or current clean cycle the duration surpass the value of determining to regulate at least one condition in entry condition and the stop condition of predetermined value.
In one form, the value of at least one condition in entry condition and the stop condition by controller in response to one or more filters have been reached predetermined age and/or filter state determine regulate.
In one form, in response to the value of the stop condition of regulating, controller also is arranged as the value of regulating entry condition with corresponding amount.
In one form, the value of at least one condition in entry condition and the stop condition increases fixing amount.
In one form, the value of entry condition and stop condition regulate the life-span depend on filter, the particle size of the state of filter, the material that filters and at least one the amount in the system load.
In another aspect, disclosed embodiment provides a kind of controller be used to the dust filtration system that comprises at least one dust filter, controller was arranged as and implements a plurality of clean cycle in a period of time, clean cycle has startup threshold value and the outage threshold that is associated with the feature of dust filtration system, and controller also is arranged as incrementally increases corresponding threshold value and the outage threshold of starting in a period of time.
In one form, controller is arranged as and implements each in response to the predetermined state of the filtration system that is determined and incrementally increase.
In one form, predetermined state is duration of current or former clean cycle to have surpassed predetermined value.In one form, be characterized as the pressure differential of the measured one or more filters of leap.
According on the other hand, disclosed embodiment comprises computer program code, and this computer program code is implemented when being carried out by processor according to arbitrary method aspect above-mentioned.
According on the other hand, disclosed embodiment provides the computer-readable medium of the program code that comprises above-mentioned aspect.
According on the other hand, disclosed embodiment provides the data-signal of the program code that is loaded with above-mentioned aspect.
Description of drawings
Preferred embodiment as example is only now described with reference to the accompanying drawings, in the accompanying drawing:
Fig. 1 is the side sectional view according to the dust control system of embodiment;
Fig. 2 is the schematic diagram according to the dust control system of embodiment;
Fig. 2 A is the schematic diagram according to the controller of embodiment;
Fig. 3 a-c shows the theoretical curve of simplification of the pressure curve of the head air receiver under different valve failure conditions; And
Fig. 4 shows the chart of the clean cycle of being implemented by the controller of Fig. 2 A as required.
The specific embodiment
In some embodiments, a kind of method of state of definite dust filter element is disclosed, wherein the dust filter element has for being directed to the air intake pipeline of filter and the air outlet slit pipeline that is used for receiving from filter the air that has been filtered by filtered air, want filtered air can pass filter and flow to the exit from the porch, and its middle filtrator bears clean cycle, said method comprising the steps of:
After a clean cycle of filter, detect the concentration of the dust in the export pipeline, the state of the concentration explanation dust filter element of the dust of detection.
In one form, this method is included in the such step that detects after the step: the concentration of the dust that detects is compared with the benchmark dust concentration, wherein illustrate in the dust filter greater than the detection dust concentration of benchmark dust concentration to have leakage.In specific implementations, comparison step can be carried out in the scheduled time after cleaning and filtering.Alternatively, comparison step can be carried out in the scheduled time of single clean cycle completely percentage after clean cycle.
In one form, clean cycle comprises forces air to pass filter with the direction opposite with the flow direction of wanting filtered air, this operation continue one section predetermined time section or should operation up to the air of predetermined volumes by till the filters locations.In specific forms, the step that forces air to pass filter comprise force air as air pulse to be higher than from entrance pipe to flowing through filter and cross filter to the higher pressure current of pressure of the air of export pipeline.
Clean cycle can comprise shakes filter.
In one form, filter element can comprise that a plurality of filters and this method are for detection of the leakage of at least one filter or the leakage of a filter in the filter set.Filter element can also comprise the outlet manifold, and its middle filtrator or each filter are connected to manifold and export pipeline is communicated with the manifold fluid.In one form, filter element can comprise a plurality of described outlet manifolds, and each manifold has at least one connected described filter and is communicated with export pipeline.Detect step and can be applied to each corresponding manifold in the different time.Alternatively, this method can be applied as the leakage at least one filter that detects the filter set that is connected to a manifold in the manifold.
In specific forms, filter or each filter are bag filter or cartridge filter.
In one form, during leakage in detecting filter element, the air by filter flows and stops.
In one form, provide definite air pressure difference of filter of crossing over another step of the further state of explanation dust filter element.In particular form, whether air pressure difference explanation filter needs cleaning.
In some embodiments, the method of the state of definite dust filter element is disclosed, wherein this dust filter element has for being directed to the air intake pipeline of filter and the air outlet slit pipeline that is used for receiving from filter institute's filtered air by filtered air, want filtered air can pass that filter flow to the exit from the porch and its middle filtrator bears clean cycle, the method comprising the steps of:
Determine to cross over the air pressure difference of filter, with the state of explanation dust filter element.
In particular form, the air pressure difference of the leap filter that is determined by application is determined the feature of clean cycle.The feature of clean cycle can be circulation the duration, the intensity of circulation and/or the start-up time of clean cycle.
In particular form, if be characterized as the start-up time of clean cycle, then when the pressure differential that is determined is on predetermined threshold value, start clean cycle.
In some embodiments, the surveillance that is used for the dust filter element is disclosed, this unit comprises for the air intake pipeline that will filtered air be directed to filter and is used for receiving the air outlet slit pipeline of filtered air from filter, want filtered air can pass that filter flow to the exit from the porch and its middle filtrator bears clean cycle, this system comprises:
The dust detector, this dust detector configurations is for being associated with the detection of dust concentration in export pipeline and for detection of the dust concentration in export pipeline; And
Controller, this controller are configured to be identified in the dust concentration that a clean cycle detects afterwards, make the dust concentration that detects to compare with the benchmark dust concentration.
In one form, thus this system also comprises the comparator module that is arranged as the dust concentration that will detect and the state of the relatively definite filter element of benchmark dust concentration; And being arranged as the signal that gives the alarm in response to comparator module, described comparator module determines that the state of filter element shows one or more features.
In one form, one or more features are included in leakage possible in the filter.
In some embodiments, a kind of control system for the dust filter element is disclosed, this unit comprises for the air intake pipeline that will filtered air be directed to filter and is used for receiving the air outlet slit pipeline of filtered air from filter, want filtered air can pass that filter flow to the exit from the porch and its middle filtrator bears clean cycle, this system comprises:
Device for detection of the air pressure difference of crossing over filter; And
Controller, this controller can be operated in order to control one or more features of clean cycle in response to the air pressure difference that is in threshold level.According to a forth aspect of the invention, provide the method that detects the leakage in the dust filter element, wherein this dust filter element has for the air intake pipeline that will filtered air be directed to filter and is used for receiving the air outlet slit pipeline of filtered air from filter, want filtered air can pass that filter flow to the exit from the porch and its middle filtrator bears clean cycle, this method may further comprise the steps:
By stirring filter, so that at least a portion of residue comes off from this filter, carry out clean cycle;
Stop agitation step;
After stopping agitation step, detect the concentration of the dust in export pipeline; And
The concentration of the dust that detects is compared with the benchmark dust concentration, wherein greater than detection dust concentration explanation undesirable leakage of generation in the dust filter element of benchmark dust concentration.
In some embodiments, the method of the state of the clean cycle system that is used for definite dust-collector is disclosed, dust-collector has for the air intake pipeline that will filtered air be directed to one or more filters and is used for receiving the air outlet slit pipeline of filtered air from one or more filters, want filtered air can pass one or more filters and flow to the exit from the porch, and wherein one or more filters bear the clean cycle by clean cycle system (execution), the clean cycle system periodically provides clean air via valve system by one or more filters from clean air source, and this method may further comprise the steps:
During at least a portion of a clean cycle, the pressure curve of the clean air of measurement in clean air source, and with this curve and predetermined curve contrast, the state greater than the change of the Discrepancy Description clean cycle system of scheduled volume between clean air pressure curve and the predetermined curve wherein.
In one form, the state of change comprises the situation about not expecting of one or more valves of valve system.Situation about not expecting alternatively, can comprise one or more openings of valves or closed malfunctioning.The difference of pressure curve can be determined by the difference between the gradient of the pressure curve of the gradient of predetermined pressure curve and clean air.
In particular form, clean air source comprises the air receiver, and the step of measurement clean air pressure curve comprises the clean air pressure curve of the air of measurement in the air receiver.
In some embodiments, the system of the state of the clean cycle system that is used for definite dust-collector is disclosed, dust-collector has for the air intake pipeline that will filtered air be directed to one or more filters and is used for receiving the air outlet slit pipeline of filtered air from one or more filters, want filtered air can pass one or more filters and flow to the exit from the porch, and wherein one or more filters bear the clean cycle by clean cycle system (execution), the clean cycle system periodically provides clean air via valve system by one or more filters from clean air source, and this system comprises:
Valve between clean air source and dust-collector, this valve can be operated clean air to be provided to one or more filters;
Be used for measuring the clean air source pressure device for pressure measurement of (variation) in time;
Be used for determining during at least a portion of a clean cycle the device at the pressure curve of the clean air of clean air source; And
Be used for the device of clean air pressure curve with predetermined pressure curve contrast, wherein the state of the variation of the Discrepancy Description clean cycle system that surpasses predetermined value between clean air pressure curve and the predetermined pressure curve.
In one form, system comprises the controller for control clean cycle system and valve.Clean air source can comprise the air receiver.
In particular form, when detecting the difference that is higher than scheduled volume, the clean cycle system is interrupted.Equally, when detecting the difference that is higher than scheduled volume, can start alarm.
In one form, controller is connected to computer network and can be via computer network remote access.Controller can be via internet and computer network communication.
With reference to accompanying drawing, dust filtration monitoring/control system comprises one or more dust filter elements 10, and wherein filter unit is to comprise type filter bag 14 forms, that be preferably a plurality of filter set 12 of filter bags 14 forms.Each filter set 12 comprises five filter bags 14, but in alternate embodiments, different corresponding groups can comprise more or filter bag still less 14.In this embodiment, as shown in Figure 2, there are 4 groups 12 equally, but in alternate embodiments, can exist greater or less than 4 groups 12.The quantity of employed group and/or filter bag will depend on quality and/or the volume of wanting filtered air.
Each group 12 comprises corresponding outlet manifold 15, and wherein filter bag 14 remains on the outlet manifold 15.Manifold 15 is connected to funnel 16 hermetically, and its ways of connecting is that filter bag 14 is contained in the annular seal space that is limited by manifold 15 and funnel 16.Air intake 18 is communicated with funnel 16 fluid ground, is provided to filter bag 14 with the air that will clean.Each manifold 15 is communicated with clean air outlet pipeline 22 fluid ground successively.Fan 24 functionally is connected to export pipeline 22, so that air is passed filter bag 14 and manifold 15 is drawn onto export pipeline 22 from entrance 18.
The group 12 of each filter bag 14 provides one relatively high pressure by air receiver 25 places from the head air with in clean cycle periodically cleaning (or by instruction, as describing in more detail in the subsequent paragraph), wherein the air of head air receiver 25 is provided to air receiver 25 by compressor 26 via check-valves 27.Pass filter bag 14 along the direction opposite with the filtering direction of air stream from air receiver 25 with the pressure higher than the pressure that passes the filter inhaled air one air is provided.This causes residue to be shed in the collecting chamber 28 at place, funnel 16 bottoms from filter.Collecting chamber 28 can manually empty to handle residue.In this embodiment, in collecting chamber, also there is the suitable sensor 32 that reaches scheduled volume of volume of determining the residue in the collecting chamber 28.Alarm can be started afterwards, chamber 28 need be emptied to notify the custodian.Alternatively, emptying of chamber 28 can be fed to the auger that removes conveyer with collected dust from funnel and automatically carry out by using.
Filtration system is provided with the controller 33 that is configured to provide a plurality of functions.A function is for arranging the cleaning of filter bag 14.In addition with reference to accompanying drawing 2A, controller 33 comprises the microprocessor 60 of implementing valve control module 62, and wherein valve control module 62 is programmed so that (for example by different solenoids or analog) controls different pulse entrances and manifold valve to act on clean cycle.In one embodiment, this comprises based on being stored in program code in the memory 64 and comes the running of control impuls inlet valve 34 and manifold valve 36.In the embodiment that illustrates, each manifold 15 has a described pulse inlet valve 34 and a described manifold valve 36 associated with it.In order to carry out cleaning function, press the instruction of controller 33, manifold valve 36 activated to close and pulse inlet valve 34 activated to open.As mentioned above, this forces air pulse to return by filter bag 14.In practice, whether filter bag 14 cleans no matter often need to continue filter process.Therefore, in this embodiment, controller 33 is configured to allow once to clean the group 12 of a filter bag 14, in order to allow remaining group 12 to continue to filter.This by use the sublevel order, be ranked or clean cycle or the clean cycle that starts by the state in response to filter realize especially.In alternate embodiments, according to the user's of filtration system demand, can clean all simultaneously or more than one group filter bag.
In this embodiment, can monitor filter element, to determine the state of dust filter element 10, an integraty that state is filter bag 14 will determining in this embodiment, another state are whether filter bag needs cleaning.
In the determining of the integraty of filter bag, can determine one or more groups 12 whether comprise one or more that break or damage or otherwise be the filter bag 14 of non-integral.This is to realize by the dust granule monitor 38 that use is arranged in export pipeline 22.In this embodiment, dust granule monitor 38 is in the cleaning of air and detect the concentration of the dust in export pipeline 22 during filtering, and reading is sent to the comparison module of being implemented by controller 33 66, in order to next analyze.Afterwards comparator module 66 with reading be stored in the memory 64 benchmark concentration relatively, wherein benchmark concentration is the Cmax of the particulate matter that allows in filtered air.Be higher than datum-plane if comparator module 66 detects the concentration of dust granule, and especially on datum-plane, be higher than the predetermined percentage tolerance, then infer at least one filter bag 14 and have the leakage of not expecting.For example, datum-plane can be to be 99.9% the removing of all particulates matter of 1 μ rice with airborne average particulate diameter by unit 10.Predetermined tolerance also can be 0.9%, is less than 99% particulate matter if make comparator module 66 determine to have removed from air by unit 10, thinks that then a filter bag 14 has leaked.
The inventor has realized that when filter bag leaks the residue of having assembled for a long time that leakage may be filtered stops up, and has therefore reduced the particulate matter of not expecting by filter, reduces to the level that is difficult to accurately detect sometimes.But after clean cycle, the residue that stops up the leakage do not expect is removed immediately, and next the amount of the particulate matter of not expecting by the filter that leaks increases, and assembles at the leakage point of not expecting again up to residue.Therefore, determined for given group 12, with preferred time of the amount of particulate matter and benchmark concentration comparison for after given filter bag is implemented for 14 group 12, carrying out immediately in clean cycle, this is in view of the particulate matter of not expecting that is easier to usually detect between at this moment in export pipeline 22.In addition, in view of each group cleaning of 12 is sequential, if after the cleaning of a specific group, comparator module 66 detects the increase of particulate matter immediately, can infer also then that at least one filter bag 14 has the leakage of not expecting in the group 12 that cleans.Custodian or other director can stop the filtration of the group 12 by being detected as the filter bag that comprises leakage afterwards, with the filter bag of inspection group 12 and replacing or repair filter non-integral or that damage.
Alternatively, in to the detection of leaking, can use the automated system of having used controller 33, with the filtration of the group 12 that stops the filter bag by including leakage.In one embodiment, this realizes by valve control module 62, and wherein valve control module 62 also can be operating as and based on the program code that is stored in the memory 64, closes the valve 42 of the side of filtered air of the group 12 of the filter bag with damage.In this way, dust filter element 10 can continue to filter the air that enters by the group 12 of all the other runnings.Can isolate the group 12 of the filter bag with damage afterwards and visual inspection is carried out in damage.
It being understood that when attempt with one or more unit 10 in use in the system of hundreds and thousands of filter bags 14 wrong in the filter bag 14 or when leaking the location, this is useful especially.The advantage that this embodiment also has is that each unit 10 only needs a dust granule monitor 38, and this has reduced fund and running cost.
In one embodiment, controller 33 also is communicated with pressure sensor 50, with the pressure differential of determining to cross over filter bag in any given time.Pressure differential can be used for determining when and how to control best clean cycle by controller 33.For the setting shown in Fig. 1, pressure differential can be for for example in 0-2.5 kPa scope, and this depends on state and the life-span of filter bag.The reading of pressure differential can be sent to the pressure control module of being implemented by controller 33 70 afterwards, wherein pressure control module 70 utilizes reading to control the feature of clean cycle, for example the start-up time of clean cycle (just being used for the cleaning by instruction), clean cycle the duration and/or the intensity of clean cycle.The advantage of this system is to prolong the life-span of bag to the needs of unnecessary cleaning by minimizing, and can strengthen the performance of system.
Under the situation of enabling the cleaning option (just controlling the relative option of option with periodicity) by instruction, pressure control module 70 can be configured to start clean cycle in response to the predetermined entry condition of some that are associated with feature filtration system that satisfied.For example, condition can be to have surpassed the predetermined pressure differential threshold value.The predetermined pressure differential threshold value can be set in the level that filter bag 14 stopped up and needed cleaning of expressing.For example, pressure control module 70 be programmed with the reading of the current pressure difference that will receive from pressure sensor 50 be stored in the memory 64 the first threshold stress level relatively.Controller will begin clean cycle afterwards, and wherein this clean cycle can continue to have satisfied up to the stop condition that is associated with system features.Stop condition can for example drop to expression output clean enough with under the second threshold pressure level (still being stored in the memory 64) that continues to filter for pressure differential.But what it will be understood by those skilled in the art that is that system features can not be pressure differential.For example, feature can be the duration of runs, filtration state etc.
It being understood that during frequent operational phase under the extra high situation of particle level that the air that enters exists, the pressure differential of being measured by pressure control module 70 can rise sharp and once surpass first threshold stress level 92 rapidly.In this case, normal clean cycle may be not enough to make in the suitable time limit pressure differential to descend.In order to adapt to the stage of this frequent use, three threshold level higher than first threshold level can be programmed in the pressure control module 70, and in case surpass the 3rd threshold level, the clean cycle that then causes controller 33 enforcements to strengthen.In one embodiment, the clean cycle of enhancing can be pulsed more continually and/or has a fluctuation pressure of increase than the clean cycle (as previously mentioned) of standard.It is contemplated that other modification of increase effective cleaning ability and the restriction that these modification should not be considered as being subjected to above-mentioned variation.
The inventor has realized that the structure owing to filter, and some filter bag 14 may little by little be retained in the particle after each clean cycle in time.Therefore, controller 33 how many times or how to implement clean cycle frequently no matter, the pressure differential of system all can little by little raise and the above-mentioned threshold value that is used for these filter bags no longer suitable.For example, keep constant if be used for the threshold value of this system, then the pressure differential of system can little by little reach and make the clean cycle point of " unlatching " (that is to say that pulsation is continuous) continuously, as mentioned above, this will cause filter bag to wear and tear prematurely and therefore abolish the characteristic that cleans by instruction.For avoiding this situation, in one embodiment, pressure control module 70 can advantageously be implemented dynamic threshold, and the value of described dynamic threshold increased with this life-span.
In one embodiment, when pressure control module 70 had determined that clean cycle has been opened a period of time T that grows than some stages scheduled time that are stored in the memory continuously, dynamic threshold can be set at increase.For example, if system has pulsed more than two hours continuously, then pressure control module 70 can increase by second threshold value (stopping the stress level of clean cycle), makes second threshold value meet or surpasses current system pressure difference.First can increase corresponding amount simultaneously with the 3rd threshold value.Certainly, it being understood that the pulsation time of the adjusting of activation threshold value can be higher or lower than two hours, this depends on actual enforcement (the just type of employed filter, particle size etc.).In one embodiment, pressure control module 70 can be considered stage and/or the life-span of filter bag 14 additionally or alternati when determining when and which kind of degree to increase threshold value with.In one embodiment, the time that threshold value increases and/or amount also can depend on different systematic parameters, for example the type of filter bag 14, by size and any other relevant system parameters of the particle of system filtration.In another embodiment, the amount of threshold value increase is the fixing amount of being scheduled to.The staged that Fig. 4 shows this threshold level increases.According to Fig. 4, measured pressure differential is indicated by Reference numeral 90, and first, second, and third pressure differential level is indicated by Reference numeral 92,94,96 respectively.The pulsation that also shows clean cycle is indicated at interval and by Reference numeral 98.Pressure control module 70 can continue to increase threshold value, up to the first threshold level within the segment distance of alarm pressure difference level 100 (for example the first threshold level reached alarm levels 90%) till.In this position, pressure control module 70 can be configured to send filter bag 14 to the operator needs the suitable alarm of replacing (for example being audible or visible alarm).
In another embodiment that can be used in combination with aforesaid way or use separately, the state of determining by controller 33 is whether one or more pulse inlet valves 34 continue closure or openness undesirably.This may because as assemble at the valve place for dust and not allow opening of valves or closed mechanical breakdown or power failure, for example for taking place with electrical connection section short circuit that problematic valve functionally engages.This state is determined by the pressure curve that uses the pressure converter 40 of communicating by letter with pressure control module 70 to measure the air pressure in the air receiver 25 during clean cycle.This air pressure is significantly higher than the air pressure of the leap filter of detection, and usually in 550-800 kPa scope.It being understood that the measured curve cloth during clean cycle should descend along with the time, shown in Fig. 3 a, wherein the air pressure during the clean cycle indicate by 44 and clean cycle between air pressure indicate by 46.Between clean cycle, along with air is fed to air receiver 25 by compressor 26, pressure rises.Reach predetermined maximum pressure then stop air supply to air receiver 25 in case pressure control module 70 monitors the air pressure in the receivers 25 and can operate as pressure.During clean cycle, the pressure curve 44 that pressure changes in the air receiver 25 can be used as predetermined or desired pressure curve (just being stored in the pressure curve in the memory 64), and it indicates cleaning systems valve 34 as expectedly works.
With reference to Fig. 3 b, if closure opened and fails by pulse of air inlet valve 34 during clean cycle 44 ＇, then the gradient of the air pressure curve of clean cycle subsequently (44 ＇ ＇) is relative mild, and this is because starting pressure will reduce owing to the leakage of the clean air by pulse inlet valve 34.Therefore although pressure control module 70 is noticed the air pressure in the air receiver 25 and is crossed low and instruct air compressor 26 to continue to receiver supply air, but the pulse of air inlet valve of opening 34 continues leakage air, and therefore pressure or decline (shown in Fig. 3 b), remain unchanged, perhaps As time goes on and slightly rise, this depends on the degree that valve 34 is opened.Therefore, in Fig. 3 a by there are differences between the measured pressure curve of being indicated by 44 ＇ ＇ among the pressure curve of 44 expectations of indicating and Fig. 3 b.This explanation valve 34 is failed closure.
Similarly, with reference to Fig. 3 c, if pulse of air inlet valve 34 fails to open, then during clean cycle subsequently, do not have the decline of pressure, and pressure curve will be similar to the distribution of being indicated by 44 ＇ ＇ ＇ among Fig. 3 c.Among Fig. 3 a by will again there are differences between the pressure curve of 46 expectations of indicating and the measured pressure curve in Fig. 3 c, indicated by 44 ＇ ＇ ＇.This will illustrate that valve 34 fails to open.The absolute value of pressure explanation fault be by valve fail to open cause or failing closure by valve causes.For example, the pressure curve among comparison diagram 3b and Fig. 3 c, wherein valve 34 is respectively and fails closure and unlatching, and the air pressure with air receiver 25 of closed valve is relatively higher than the air pressure of the air receiver 25 of the valve with unlatching.It being understood that then this is the situation of extreme fault if any one pulse inlet valve 34 continues complete closure or openness.
If any pulse of air inlet valve 34 is confirmed as continuing closure or openness, then pulse of air inlet valve 34 is at first tested to determine that whether it is because of the lasting closure or openness of power failure.In this embodiment, the test module of being implemented by controller 33 can operate as electric current is fed to each valve that has fault 34.If electric current on predeterminated level, then means the short circuit of the leap valve that existence is not expected.If electric current is lower than predetermined amount, perhaps electric current is zero, then means the open circuit of the leap valve that existence is not expected.If do not detect open circuit or short circuit, the fault that then means in-problem valve 34 is mechanical breakdown.Valve can be isolated and carries out visual inspection afterwards.Can remove the obstacle (for example being the gathering of dust) that any vision-based detection arrives afterwards, perhaps repair or change the valve of fault on demand.
Although present embodiment is applied to the cleaning unit 10 by administrative staff's supervision at scene, but in another embodiment, as each modification in the above-mentioned embodiment, controller 33 can come remote access via internet or some other suitable communication networks by computer.In this way, the running of dust filter element 10 can monitor non-at-scenely and/or control.For example, if determined that clean cycle needs to revise, then control signal can be sent to control module 33, the clean cycle program code that control module 33 causes being stored in the memory 64 is done suitable modification.In the embodiment shown in Fig. 2 A, controller 33 comprises the modem 82 of communicating by letter with remote computer for via the dedicated network of the safety of being indicated by Reference numeral 84.
Unless it being understood that context needs or suggestion are arranged in addition, otherwise the characteristic of arbitrary above-mentioned embodiment can be used in combination with another or a plurality of above-mentioned embodiment.
Although the disclosure is described with reference to preferred embodiment, but be to be understood that already used word is descriptive words, rather than restrictive, and not with the scope of the present invention that is defined by the following claims under situation about deviating from, can change.
In following claim and in the above description, unless context is because representation language or inevitable implication and needs are arranged in addition, otherwise in various embodiments, word " comprise " or for example for the variant of " comprising " as open implication, the existence of described characteristic just be described but do not get rid of existence or the adding of the characteristic among the different embodiment.
The reference of the prior art information of this paper is not to admit that this information is formed on the part of common practise in the technology in Australia or any other country.
Claims (24)
1. a control comprises the method for clean cycle of the dust filtration system of one or more filters, and described clean cycle has entry condition and the stop condition that is associated with the feature of described dust filtration system, and described method comprises:
Regulate at least one condition in described entry condition and the described stop condition in response to the described dust filtration system predetermined state that is determined.
2. method according to claim 1 wherein, is used for the described pressure differential that is characterized as one or more filters of the described dust filtration system of detected leap of at least one condition of described entry condition and described stop condition.
3. method according to claim 2, wherein, described entry condition has reached first predetermined value for the pressure differential of crossing over described one or more filters.
4. method according to claim 3, wherein, described stop condition is lower than second predetermined value for the pressure differential of crossing over described one or more filters has dropped to, and described second predetermined value is lower than described first predetermined value.
5. method according to claim 1 wherein, surpasses predetermined value in response to duration of former or current clean cycle and regulates described starting pressure condition and the described value that stops at least one condition in the pressure condition.
6. method according to claim 1, wherein, in response to having reached predetermined age and/or filtration state, at least one filter of determining described filtration system regulates described starting pressure condition and the described value that stops at least one condition in the pressure condition.
7. according to claim 5 or 6 described methods, wherein, in response to when current clean cycle surpasses predetermined value to the adjusting of the value of stop condition, the value of entry condition is regulated predetermined amount.
8. according to each described method among the claim 5-7, wherein, the value of at least one condition in described entry condition and the described stop condition increases fixing amount.
9. according to each described method among the claim 5-7, wherein, the particle size of the state of the life-span of described filter, described filter, the material that is filtered and at least one the amount in the system load are depended in the value increase of at least one condition in described entry condition and the described stop condition.
10. controller that is used for comprising the dust filtration system of one or more filters, described controller is arranged as implements to have the entry condition that is associated with the feature of dust filtration system and the clean cycle of stop condition, and described controller also is arranged as at least one condition of regulating in response to the predetermined state of determining described dust filtration system in described entry condition and the described stop condition.
11. controller according to claim 10, wherein, at least one condition described that is used for described entry condition and described stop condition is characterized as the pressure differential of one or more filters of the described dust filtration system of leap of detection.
12. controller according to claim 11, wherein, described entry condition is that described pressure differential has reached first predetermined value.
13. controller according to claim 12, wherein, described stop condition is that described pressure differential has dropped to and is lower than second predetermined value, and described second predetermined value is lower than described first predetermined value.
14. controller according to claim 10, wherein, described controller be arranged as in response to before determining or current clean cycle the duration surpass predetermined value and regulate the value of at least one condition in described entry condition and the described stop condition.
15. controller according to claim 10, wherein, the value of at least one condition in described entry condition and the described stop condition has arrived predetermined age and/or filtration state in response to definite described one or more filters and has been regulated by controller.
16. according to claim 14 or 15 described controllers, wherein, in response to the value of the described stop condition that is conditioned, described controller also is arranged as regulates corresponding amount with the value of described entry condition.
17. according to each described controller among the claim 12-16, wherein, the value of at least one condition in described entry condition and the described stop condition is increased fixing amount.
18. according to each described controller among the claim 10-17, wherein, the value of described entry condition and described stop condition is conditioned the particle size of the state of the life-span of depending on described filter, described filter, the material that is filtered and at least one the amount in the system load.
19. controller for the dust filter system that comprises at least one dust filter, described controller was arranged as and implements a plurality of clean cycle in a period of time, described clean cycle has startup threshold value and the outage threshold that is associated with the feature of described dust filtration system, and described controller also is arranged as incrementally increases corresponding threshold value and the outage threshold of starting in described a period of time.
20. controller according to claim 19, wherein, described controller is arranged as in response to the predetermined state of the described filtration system that is determined and implements the increase that each increases progressively.
21. controller according to claim 20, wherein, described predetermined state be current or former clean cycle the duration surpassed predetermined value.
22. a computer program code, described computer program code when being implemented by processor, are implemented each described method among the claim 1-9.
23. a computer-readable medium, described computer-readable medium comprises program code according to claim 21.
24. a data-signal, described data-signal is loaded with program code according to claim 21.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2010903505A AU2010903505A0 (en) | 2010-08-05 | Dust collector control system | |
| AU2010903505 | 2010-08-05 | ||
| PCT/AU2011/001002 WO2012016299A1 (en) | 2010-08-05 | 2011-08-05 | Dust collector control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103282095A true CN103282095A (en) | 2013-09-04 |
| CN103282095B CN103282095B (en) | 2015-05-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180048374.5A Expired - Fee Related CN103282095B (en) | 2010-08-05 | 2011-08-05 | Dust collector control system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103282095B (en) |
| CA (1) | CA2807245A1 (en) |
| WO (1) | WO2012016299A1 (en) |
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| CN104545699A (en) * | 2013-10-21 | 2015-04-29 | Lg电子株式会社 | Robot cleaner and method for sensing dust |
| CN110935249A (en) * | 2018-09-25 | 2020-03-31 | 莱芜钢铁集团电子有限公司 | Self-cleaning control method and device for air filter |
| CN113507978A (en) * | 2018-12-18 | 2021-10-15 | 唐纳森公司 | Filtration system with active pulse cleaning |
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| US8894744B2 (en) * | 2012-03-29 | 2014-11-25 | Alstom Technology Ltd | System and method of cleaning particulate collection devices used in a flue gas processing system |
| CN103776661A (en) * | 2012-10-18 | 2014-05-07 | 南京白云化工环境监测有限公司 | Automatic sampler for dust |
| RU2553286C1 (en) * | 2014-02-18 | 2015-06-10 | Владимир Евгеньевич Воскресенский | Hose-cartridge filter to clean air from mechanical impurities with built-in compressor module to produce compressed air |
| CN106020099A (en) * | 2016-07-11 | 2016-10-12 | 广东德龙能效技术有限公司 | Printing machine position selective dust automatic negative pressure discharge system in printing workshop |
| CN109794485A (en) * | 2019-02-27 | 2019-05-24 | 昆山市瑞浦鑫涂装机械有限公司 | A kind of dust collecting and dedusting room |
| DE102021132287A1 (en) | 2021-12-08 | 2023-06-15 | Bayerische Motoren Werke Aktiengesellschaft | Method for fault detection in a filter system, filter system and method for manufacturing a component |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012016299A1 (en) | 2012-02-09 |
| CA2807245A1 (en) | 2012-02-09 |
| CN103282095B (en) | 2015-05-20 |
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