CN105422881A - Valve clack of labyrinth type release valve - Google Patents
Valve clack of labyrinth type release valve Download PDFInfo
- Publication number
- CN105422881A CN105422881A CN201510621406.6A CN201510621406A CN105422881A CN 105422881 A CN105422881 A CN 105422881A CN 201510621406 A CN201510621406 A CN 201510621406A CN 105422881 A CN105422881 A CN 105422881A
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- CN
- China
- Prior art keywords
- valve
- labyrinth type
- main body
- flap
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Abstract
The invention provides a valve clack of a labyrinth type release valve. The valve clack comprises a main body, a cylindrical guide surface is arranged outside the main body, a sealing surface is arranged at the bottom of the main body, a hollow upper concave cavity is formed in the upper portion of the bottom of the main body, and a peripheral annular groove is formed in the guide surface outside the main body. An adjustment passage penetrating through the bottom of the main body is arranged on the outer ring of the sealing surface of the bottom of the main body, and the middle of the adjustment passage is connected with a screw passage. The valve clack of the labyrinth type release valve overcomes the defects in the prior art, the friction force between the valve clack and a guide sleeve is reduced, and the reseating pressure of the release valve can be effectively adjusted and controlled according to the actual conditions of equipment protected by the release valve. On the basis of improving the sealing performance of the release valve, the safety and reliability of the release valve are guaranteed.
Description
Technical field
The present invention relates to valve class technical field, particularly relate to a kind of labyrinth type discharge valve flap.
Background technique
Existing bleeder valve structure as shown in Figure 1, comprises flap 1, and flap 1 inside forms back pressure cavity 2, and flap 1 outside is provided with guide sleeve 3, and guide sleeve 3 lower outer is provided with circle 4, is provided with lower circle 5 below upper circle 4.Composition graphs 2, flap 1 comprises main body, and body exterior is provided with guide surface A, and bottom part body is provided with sealing surface, forms the top cavity C of hollow above bottom part body.Guide surface A is smooth, cylindrical peripheral surface, and communicates without passage between body floor B with top cavity C.
When bleeder valve is opened, medium flows through from flap 1 and guide sleeve 3 gap location and enters back pressure cavity 2.On the one hand, due to the effect of pressure medium, make flap 1 be partial to guide sleeve 3 side, add the frictional force between flap 1 and guide sleeve 3, thus output flap 1 and guide sleeve 3 excessive wear or occur jam phenomenon; Meanwhile, reveal because the factors such as wearing and tearing and jam can cause seal failure when bleeder valve is closed again.On the other hand, pressure due to back pressure cavity 2 is that the medium by flowing through gap between flap 1 and guide sleeve 3 is formed, therefore its counterpressure is uncontrollable, and this counterpressure forms a downward additional forces on flap 1 top, and the size of this active force directly affects the performance of bleeder valve; That is: when active force is too high, make Reseating pressure of a safety valve too high thus make bleeder valve produce chatter phenomenon; When active force is too little, make Reseating pressure of a safety valve too low, even lower than system working pressure, thus affect the normal work of bleeder valve institute proterctive equipment.
Therefore; be necessary to provide a kind of new bleeder valve valve flap structure; to solve the frictional force between flap and guide sleeve existed in prior art excessive and the seal failure caused and leakage, and the pressure of back pressure cavity is uncontrollable normally to work the problem impacted to bleeder valve institute proterctive equipment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of frictional force that can reduce between flap and guide sleeve, and can carry out the bleeder valve flap of effectively adjustment to the pressure of back pressure cavity according to bleeder valve institute proterctive equipment actual conditions.
In order to solve the problems of the technologies described above, technological scheme of the present invention is to provide a kind of labyrinth type discharge valve flap, comprise main body, body exterior is provided with columniform guide surface, bottom part body is provided with sealing surface, form the top cavity of hollow above bottom part body, it is characterized in that: the guide surface of described body exterior is provided with circumferential annular groove; The sealing surface outer ring of described bottom part body is provided with the adjustment passage of through described bottom part body, regulates channel middle attachment screw passage.
Preferably, described adjustment passage is leaning structure.
Preferably, described screw conduits is up-set type, namely upwards extends until be connected with described top cavity is through from described adjustment channel middle.
Preferably, described screw conduits is underneath type, namely from described adjustment channel middle to downward-extension until run through described bottom part body.
Preferably, between described screw conduits and described adjustment passage, shape has angle.
Preferably, in described screw conduits, be provided with adjusting screw, by regulate adjusting screw be screwed into the degree of depth, control the Reseating pressure of a safety valve of described bleeder valve.
Device provided by the invention overcomes the deficiencies in the prior art; not only reduce the frictional force between flap and guide sleeve; and can according to bleeder valve institute proterctive equipment actual conditions; effective regulable control is carried out to bleeder valve Reseating pressure of a safety valve; on the basis of improving bleeder valve sealability, ensure that the safety and reliability of bleeder valve.
Accompanying drawing explanation
Fig. 1 is traditional bleeder valve structural representation;
Fig. 2 is traditional bleeder valve valve flap structure schematic diagram;
The labyrinth type discharge valve flap screw conduits top load arrangement schematic diagram of Fig. 3 for providing in embodiment 1;
Fig. 4 for the valve flap structure shown in Fig. 3 install on bleeder valve after schematic diagram;
The labyrinth type discharge valve flap screw conduits underneath type structural representation of Fig. 5 for providing in embodiment 2;
Fig. 6 for the valve flap structure shown in Fig. 5 install on bleeder valve after schematic diagram.
Embodiment
For making the present invention become apparent, hereby with several preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
The labyrinth type discharge valve valve flap structure schematic diagram that Fig. 3 provides for the present embodiment, described labyrinth type discharge valve flap is on the guide surface A of traditional flap, arrange some roads circumference annular groove 1-1, form labyrinth seal, back pressure cavity 2 is entered to reduce medium when bleeder valve discharges, simultaneously in groove 1-1 medium to flap circumferential formation homogeneous air-cushion effect, flap is made to be suspended in guide sleeve 3, thus the frictional force reduced between flap 1 and guide sleeve 3, reveal because the factors such as wearing and tearing and jam cause seal failure when effectively preventing bleeder valve from closing.
Meanwhile, the sealing surface outer ring bottom flap arranges the adjustment passage 1-2 bottom through flap, regulates passage 1-2 attachment screw passage 1-3.Passage 1-2 is regulated to be leaning structure.Screw conduits 1-3 is up-set type, namely upwards extends until be connected with the top cavity C of flap is through in the middle part of adjustment passage 1-2, as shown in Figure 3.Screw conduits 1-3 can be underneath type, namely from regulating to downward-extension until run through bottom flap in the middle part of passage 1-2, as shown in Figure 5.In this enforcement, screw conduits 1-3 is vertical setting, and namely between screw conduits 1-3 and adjustment passage 1-2, shape has angle.
Composition graphs 4, is screwed in screw conduits 1-3 by adjusting screw 6 from top cavity C, by regulate adjusting screw 6 be screwed into the degree of depth, with the Reseating pressure of a safety valve of controlled discharge valve.When adjusting screw 6 is screwed into, regulate passage to reduce, the pressure medium entering back pressure cavity raises slack-off, and Reseating pressure of a safety valve reduces; When adjusting screw 6 is back-outed, regulate passage to increase, the pressure medium entering back pressure cavity raises to be accelerated, and Reseating pressure of a safety valve increases, thus bleeder valve Reseating pressure of a safety valve is effectively controlled.
The labyrinth type discharge valve valve flap structure that the present embodiment provides, both can effectively avoid Reseating pressure of a safety valve too high and make bleeder valve generation chatter, Reseating pressure of a safety valve can be avoided again too low and bleeder valve proterctive equipment cannot normally be worked.
The labyrinth type discharge valve valve flap structure that the present embodiment provides, reduces the frictional force between flap 1 and guide sleeve 3 on the one hand, reveals when effectively preventing bleeder valve from closing because the factors such as wearing and tearing and jam cause seal failure; According to bleeder valve institute proterctive equipment actual conditions, effective regulable control can be carried out to bleeder valve Reseating pressure of a safety valve on the other hand.Integrate, the labyrinth type discharge valve valve flap structure that the present embodiment provides, on the basis of improving bleeder valve sealability, more effectively can regulate Reseating pressure of a safety valve, ensure that the safety and reliability of bleeder valve.
Embodiment 2
Composition graphs 5, the difference of the present embodiment and embodiment 1 is that screw conduits 1-3 is underneath type, namely from regulating in the middle part of passage 1-2 to downward-extension until run through bottom flap.In this enforcement, screw conduits 1-3 is vertical setting, and namely between screw conduits 1-3 and adjustment passage 1-2, shape has angle.
Composition graphs 6, is screwed in screw conduits 1-3 by adjusting screw 6 from flap bottom, by regulate adjusting screw 6 be screwed into the degree of depth, with the Reseating pressure of a safety valve of controlled discharge valve.When adjusting screw 6 is screwed into, regulate passage to reduce, the pressure medium entering back pressure cavity raises slack-off, and Reseating pressure of a safety valve reduces; When adjusting screw 6 is back-outed, regulate passage to increase, the pressure medium entering back pressure cavity raises to be accelerated, and Reseating pressure of a safety valve increases, thus bleeder valve Reseating pressure of a safety valve is effectively controlled.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a labyrinth type discharge valve flap, comprise main body, body exterior is provided with columniform guide surface (A), bottom part body is provided with sealing surface, form the top cavity (C) of hollow above bottom part body, it is characterized in that: the guide surface (A) of described body exterior is provided with circumferential annular groove (1-1); The sealing surface outer ring of described bottom part body is provided with the adjustment passage (1-2) of through described bottom part body, regulates passage (1-2) middle part attachment screw passage (1-3).
2. a kind of labyrinth type discharge valve flap as claimed in claim 1, is characterized in that: described adjustment passage (1-2) is leaning structure.
3. a kind of labyrinth type discharge valve flap as claimed in claim 2, it is characterized in that: described screw conduits (1-3) is up-set type, namely upwards extend until be connected with described top cavity (C) is through from described adjustment passage (1-2) middle part.
4. a kind of labyrinth type discharge valve flap as claimed in claim 2, is characterized in that: described screw conduits (1-3) is underneath type, namely from described adjustment passage (1-2) middle part to downward-extension until run through described bottom part body.
5. a kind of labyrinth type discharge valve as described in claim 3 or 4, is characterized in that: between described screw conduits (1-3) and described adjustment passage (1-2), shape has angle.
6. a kind of labyrinth type discharge valve flap as described in any one of Claims 1 to 4, be located in bleeder valve, it is characterized in that: in described screw conduits (1-3), be provided with adjusting screw (6), by regulate adjusting screw (6) be screwed into the degree of depth, control the Reseating pressure of a safety valve of described bleeder valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621406.6A CN105422881B (en) | 2015-09-25 | 2015-09-25 | A kind of labyrinth type discharge valve flap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621406.6A CN105422881B (en) | 2015-09-25 | 2015-09-25 | A kind of labyrinth type discharge valve flap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422881A true CN105422881A (en) | 2016-03-23 |
| CN105422881B CN105422881B (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621406.6A Active CN105422881B (en) | 2015-09-25 | 2015-09-25 | A kind of labyrinth type discharge valve flap |
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| Country | Link |
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| CN (1) | CN105422881B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718361A (en) * | 2010-01-27 | 2010-06-02 | 浙江超达阀门股份有限公司 | Constant-pressure check valve |
| CN201615268U (en) * | 2010-04-02 | 2010-10-27 | 吴江市东吴机械有限责任公司 | Main steam security valve |
| CN101893096A (en) * | 2009-05-20 | 2010-11-24 | 冯敬 | Electromagnetic valve structure |
| US8307856B2 (en) * | 2007-11-07 | 2012-11-13 | Tdw Delaware Inc. | Double block and bleed plug |
| CN202768896U (en) * | 2012-08-29 | 2013-03-06 | 江阴万讯自控设备有限公司 | Multi-stage valve core structure of adjusting valve |
| CN104896109A (en) * | 2015-05-29 | 2015-09-09 | 杭州华惠阀门有限公司 | Pressure reducing valve |
-
2015
- 2015-09-25 CN CN201510621406.6A patent/CN105422881B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8307856B2 (en) * | 2007-11-07 | 2012-11-13 | Tdw Delaware Inc. | Double block and bleed plug |
| CN101893096A (en) * | 2009-05-20 | 2010-11-24 | 冯敬 | Electromagnetic valve structure |
| CN101718361A (en) * | 2010-01-27 | 2010-06-02 | 浙江超达阀门股份有限公司 | Constant-pressure check valve |
| CN201615268U (en) * | 2010-04-02 | 2010-10-27 | 吴江市东吴机械有限责任公司 | Main steam security valve |
| CN202768896U (en) * | 2012-08-29 | 2013-03-06 | 江阴万讯自控设备有限公司 | Multi-stage valve core structure of adjusting valve |
| CN104896109A (en) * | 2015-05-29 | 2015-09-09 | 杭州华惠阀门有限公司 | Pressure reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422881B (en) | 2018-04-20 |
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Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee after: SHANGHAI POWER EQUIPMENT Research Institute Patentee after: SHANGHAI PURUI ENERGY TECHNOLOGY Co.,Ltd. Address before: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee before: SHANGHAI POWER EQUIPMENT Research Institute Patentee before: SHANGHAI PURUI ENERGY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200922 Address after: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee after: SHANGHAI POWER EQUIPMENT Research Institute Address before: 200240 Shanghai city Minhang District Jianchuan Road No. 1115 Patentee before: SHANGHAI POWER EQUIPMENT Research Institute Patentee before: SHANGHAI PURUI ENERGY TECHNOLOGY Co.,Ltd. |
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