CN102175384B - Isolated pressure-limiting protective pressure acquisition device - Google Patents
Isolated pressure-limiting protective pressure acquisition device Download PDFInfo
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- CN102175384B CN102175384B CN201110025817A CN201110025817A CN102175384B CN 102175384 B CN102175384 B CN 102175384B CN 201110025817 A CN201110025817 A CN 201110025817A CN 201110025817 A CN201110025817 A CN 201110025817A CN 102175384 B CN102175384 B CN 102175384B
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- pressure
- liquid storage
- pressure transmission
- storage cylinder
- acquisition device
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Abstract
The invention provides an isolated pressure-limiting protective pressure acquisition device, which comprises a pressure acquisition primary meter, a primary meter connector, a main body, a pressure regulator, a liquid storage chamber, a netted isolation pad, an isolation film, an isolation chamber and a pressure transmission connector. The isolated pressure-limiting protective pressure acquisition device is characterized in that the pressure acquisition primary meter is in threaded connection with the primary meter connector at the middle part of the upper end of the main body, the primary meter connector is communicated with the liquid storage chamber on the main body, the pressure regulator is in threaded connection with the liquid storage chamber, the liquid storage chamber is communicated with the isolation chamber on the main body via a pressure transmission hole and the netted isolation pad, the isolation film is fixed in the isolation chamber through the pressure transmission connector, and the pressure transmission connector is connected with a measured medium pipeline. The isolated pressure-limiting protective pressure acquisition device is simple in structure, reliable in principle and accurate in pressure measurement, and can ensure that the pressure is measured in a measuring range of the primary meter, so that the primary meter is protected, and the pressure of press limit is prevented from increasing suddenly to damage the primary meter and cause production accidents.
Description
Technical field
The present invention relates in oil, the chemical field hydrodynamic pressure measurement activity commonly used a kind of be used for protecting pressure transducer or manometric isolation voltage-limiting protector, specifically a kind of isolation voltage-limiting protection pressure acquisition device.
Background technology
The measurement of hydrodynamic pressure is very common in oil, chemical industry and other industry; Continuous development along with technology; Also increasingly high to tonometric requirement, such as, increasing, the tonometric accuracy requirement of tonometric scope is increasingly high, the measurement of corrosive fluid etc.For this reason; Often need place a plurality of pressure transducers or tensimeter at a spot pressure; But how to protect, how to prevent to corrode most important to the pressure transducer or the tensimeter of little range; In case, influence the ordinary production research work when causing economic loss, thereby possibly result in greater loss because precision measurement apparatus superpressure or corrosion are easy to damage.Present solution mainly is to add valve control; Hand valve, motorized valve, pneumatic valve etc. are arranged; Their common characteristics need increase control gear exactly, need artificial Monitoring and Controlling like hand valve, and motorized valve needs electric operator; And electric operator needs artificial or go to trigger the motor drive mechanism action automatically, and pneumatic valve need increase the control gear of air feed and gas etc.Isolator also has ready-made product, but function ratio is more single, has only the isolation anti-corrosion function basically, and does not have the voltage-limiting protection function.
Summary of the invention
The object of the present invention is to provide a kind of isolation voltage-limiting protection pressure acquisition device; Utilize incompressible principle of liquid and the structure of isolating voltage-limiting protection pressure acquisition device; Utilize to isolate gather the method for pressure pressure transducer or tensimeter are protected, prevent the accident that causes to the damage of precision instrument and because of leakage.
Technical scheme of the present invention realizes in the following manner:
The present invention includes that pressure acquisition is once shown, meter connector, body, pressure governor, liquid storage cylinder, netted isolating pad, barrier film, separate cavities, pressure transmission joint; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body; Pressure governor links to each other with the liquid storage cylinder screw thread; Liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad, and barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
Body is made as cylindrical or rectangle, is provided with or is welded with box thread or change a meter connector of male thread at upper top, and level is provided with the outside liquid storage cylinder of opening at the middle part; Opening part is provided with box thread; In the middle part of down, be provided with the downward arc separate cavities of nock, be provided with the cylinder open groove in arc separate cavities bottom, open slot is provided with box thread; Central upper is provided with cylindrical netted isolating pad on arc separate cavities top, is provided with pressure transmission hole between meter connector, liquid storage cylinder and the netted isolating pad.
Pressure governor is made as cylindrical, and the front portion is provided with O-ring seal, the middle part be provided with liquid storage cylinder on the male thread of box thread coupling, the rear portion is provided with the spanner rib; Also can be made as piston to the front portion, the rear portion is made as single ended bolt; Also can the front portion be made as piston, the middle part is made as volute spring, the rear portion is made as single ended bolt or jackscrew.
The pressure transmission joint is made as cylindrical; Periphery is provided with the male thread that is complementary with body bottom box thread; The bottom be provided with band male thread or box thread with the joint that is connected by the side medium pipeline; Be provided with intercommunicating pore at the center, last end face can be made as the plane, also can be made as the arcwall face corresponding with the arc separate cavities of body.
Principle of work of the present invention and advantage:
The present invention utilizes the incompressible principle of liquid to carry out the measured medium pressure isolation surveyed to show, to utilize the liquid storage cylinder liquid storage, to utilize pressure governor to exert pressure to make to liquid and once express the regulation range; Define separate cavities this moment, pressure transmission hole and the liquid measure of once showing, once table can only be surveyed in amount title scope and show pressure; After being adjusted at range ability; Regulate pressure governor, make and once show to make zero, connection pressure is presented at linear pressure with the variation of unit pressure.Under abnormal conditions, when linear pressure exceeded the range of table once suddenly, netted isolating pad had been done supporting to barrier film, can not burst barrier film; Once table can not surpass range yet, and bad if corrosive medium through the isolation of barrier film, is once shown also can not corrode, the present invention is simple in structure; Principle is reliable, surveys and shows that pressure is accurate, has guaranteed once to show to survey in the range ability and has shown pressure; Protected once table, prevented that line ball pressure from increasing suddenly, once table damages the industrial accident that causes.
Description of drawings
Accompanying drawing-structural representation of the present invention
The netted isolating pad 3-barrier film of 1-liquid storage cylinder 2-4-separate cavities 5-pressure acquisition is once shown 6-body 7-pressure governor 8-pressure transmission joint among the figure
Embodiment
For further disclosing technical scheme of the present invention, elaborate through embodiment below in conjunction with Figure of description:
The present invention includes pressure acquisition once table 5, meter connector, body 6, pressure governor 7, liquid storage cylinder, netted isolating pad 2, barrier film 3, separate cavities 4, pressure transmission joint 8; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body; Pressure governor links to each other with the liquid storage cylinder screw thread; Liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad, and barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
When application is of the present invention, pressure transmission joint 8 is installed on the compression fittings of measured medium pipeline, once regulate pressure governor 7 in the range front and back of table 5 according to pressure acquisition; Make the liquid of liquid storage cylinder 1 press down barrier film 3, be full of once table 5 of separate cavities 4, pressure transmission hole and pressure acquisition, discharge air, continue to regulate pressure governor; Make a gauge pressure designation data in range ability, regulate pressure governor again, making once, table makes zero; Amount of liquid still is in the amount of liquid of once showing range ability, opens the operation valve on the compression fittings, and the pressure of measured medium acts on the accommodating pressure-transmitting liquid through barrier film; The high more once table of the unit pressure of measured medium shows that pressure is big more, and under the pressure normal condition of measured medium, once table can not surpass range; When the pressure of measured medium sharply increased suddenly, because netted isolating pad 2 is set, barrier film can not burst; The accommodating pressure-transmitting liquid amount can not change; Once table is still surveyed in range ability and is shown pressure, has guaranteed manometric measuring accuracy, and having protected once, table is not destroyed.
Claims (4)
1. isolate voltage-limiting protection pressure acquisition device for one kind; Comprise that pressure acquisition is once shown, meter connector, body, pressure governor, liquid storage cylinder, netted isolating pad, barrier film, separate cavities, pressure transmission joint; It is characterized in that pressure acquisition once shows to be threaded with a meter connector of body upper center; Meter connector is connected with liquid storage cylinder on being located at body, and pressure governor links to each other with the liquid storage cylinder screw thread, and liquid storage cylinder is connected with separate cavities on the body through pressure transmission hole and netted isolating pad; Barrier film is fixed in the separate cavities through the pressure transmission joint, and the pressure transmission joint links to each other with the measured medium pipeline.
2. isolation voltage-limiting protection pressure acquisition device according to claim 1 is characterized in that body is made as cylindrical or rectangle, and a meter connector of box thread or male thread is arranged; Be provided with or be welded on the body upper top; The outside liquid storage cylinder of opening is horizontally set on the body middle part, and opening part is provided with box thread, and the downward arc separate cavities of nock is arranged on the body middle and lower part; Bottom is provided with the cylinder open groove at the arc separate cavities; Open slot is provided with box thread, and cylindrical netted isolating pad is arranged on arc separate cavities top central upper, and pressure transmission hole is arranged between meter connector, liquid storage cylinder and the netted isolating pad.
3. isolation voltage-limiting protection pressure acquisition device according to claim 1; It is cylindrical to it is characterized in that pressure governor is made as; The pressure governor front portion is provided with O-ring seal, pressure governor middle part be provided with liquid storage cylinder on the male thread of box thread coupling, the pressure governor rear portion is provided with the spanner rib.
4. isolation voltage-limiting protection pressure acquisition device according to claim 1; It is cylindrical to it is characterized in that the pressure transmission joint is made as; Pressure transmission joint periphery is provided with the male thread that is complementary with body bottom box thread, pressure transmission joint bottom be provided with band male thread or box thread with the joint that is connected by the side medium pipeline, the pressure transmission joint is provided with intercommunicating pore at the center; End face is made as the plane on the pressure transmission joint, perhaps is provided with the arcwall face corresponding with the arc separate cavities of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110025817A CN102175384B (en) | 2011-01-20 | 2011-01-20 | Isolated pressure-limiting protective pressure acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110025817A CN102175384B (en) | 2011-01-20 | 2011-01-20 | Isolated pressure-limiting protective pressure acquisition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102175384A CN102175384A (en) | 2011-09-07 |
| CN102175384B true CN102175384B (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110025817A Expired - Fee Related CN102175384B (en) | 2011-01-20 | 2011-01-20 | Isolated pressure-limiting protective pressure acquisition device |
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| Country | Link |
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| CN (1) | CN102175384B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792037A (en) * | 2012-11-01 | 2014-05-14 | 许春萌 | Pressure gauge protection device |
| CN109734043B (en) * | 2018-12-18 | 2020-06-26 | 宝泰科技有限公司 | Automatic calibration system for oil gas recovery of gas station |
| CN111238719B (en) * | 2020-03-10 | 2022-06-21 | 云南省水利水电工程有限公司 | Grouting pressure sensing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050145A (en) * | 1995-04-28 | 2000-04-18 | Rosemount Inc. | Pressure transmitter with high pressure isolator mounting assembly |
| CN2522849Y (en) * | 2001-07-06 | 2002-11-27 | 北京布莱迪机电设备有限公司 | Space-control type over-pressure protector |
| CN2909204Y (en) * | 2006-06-06 | 2007-06-06 | 北京布莱迪仪器仪表有限公司 | Overpressure protector of bollows pressure gage |
| CN201508264U (en) * | 2009-09-11 | 2010-06-16 | 北京布莱迪仪器仪表有限公司 | Capsule pressure gauge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10234754A1 (en) * | 2002-07-30 | 2004-02-19 | Endress + Hauser Gmbh + Co. Kg | Differential pressure sensor with symmetrical separator error |
-
2011
- 2011-01-20 CN CN201110025817A patent/CN102175384B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050145A (en) * | 1995-04-28 | 2000-04-18 | Rosemount Inc. | Pressure transmitter with high pressure isolator mounting assembly |
| CN2522849Y (en) * | 2001-07-06 | 2002-11-27 | 北京布莱迪机电设备有限公司 | Space-control type over-pressure protector |
| CN2909204Y (en) * | 2006-06-06 | 2007-06-06 | 北京布莱迪仪器仪表有限公司 | Overpressure protector of bollows pressure gage |
| CN201508264U (en) * | 2009-09-11 | 2010-06-16 | 北京布莱迪仪器仪表有限公司 | Capsule pressure gauge |
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| Publication number | Publication date |
|---|---|
| CN102175384A (en) | 2011-09-07 |
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Granted publication date: 20121003 Termination date: 20220120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |