CN203926866U - Low-temperature brake valve - Google Patents
Low-temperature brake valve Download PDFInfo
- Publication number
- CN203926866U CN203926866U CN201420362964.6U CN201420362964U CN203926866U CN 203926866 U CN203926866 U CN 203926866U CN 201420362964 U CN201420362964 U CN 201420362964U CN 203926866 U CN203926866 U CN 203926866U
- Authority
- CN
- China
- Prior art keywords
- valve
- filler
- flashboard
- greasing
- adopts
- 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.)
- Active
Links
Abstract
The utility model relates to a kind of low-temperature brake valve, comprises valve body, flashboard, valve rod, valve gap, handwheel, and packing seal letter is installed between valve gap and valve rod, and valve gap adopts and lengthens neck structure; Mainly that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring is set, vacuum ring inner chamber is communicated with automatic greasing device, the upper end of upper filler is provided with filler automatic compensator, described automatic greasing device is comprised of the signal emitter and the greasing solenoid valve that are arranged between lower filler and vacuum ring, and the control signal of signal emitter is connected in the power circuit of greasing solenoid valve; Described filler automatic compensator is comprised of the butterfly spring being arranged between Gland and hold-down grid; Wedge shape flashboard surrounding end face center is shaped with annular groove, is shaped with the relief hole of connected ring connected in star and valve body inlet passage on flashboard.There is the advantages such as sealability is reliable, Security is good, be applicable to cryogenic media operating mode.
Description
Technical field
The utility model relates to valve field, particularly about a kind of gate valve.The utility model is applicable to cryogenic media operating mode.
Background technique
The structure of gate valve generally comprises valve body, flashboard, valve rod, valve gap, handwheel, according to flashboard structure, can be divided into plate valve, prop open type gate valve, wedge action valve, between the flashboard both sides sealing face of wedge action valve with between import and export valve seat sealing surface, there is the key groove equating, for low-temperature brake valve, require valve to reach zero external leakage, to the sealability of packing seal letter between valve rod and valve gap, require very high, in order to reduce medium temperature, affect the sealability of packing seal letter, general valve gap adopts and lengthens neck structure.But in the long-term opening-closing process of valve, valve rod can produce wearing and tearing to packing seal letter, sealability between valve rod and valve gap is declined, there is medium and leak outside.The shortcoming of this artificial greasing is cannot know when leaking appears in filler need to carry out greasing, and the valve using being installed on field, and artificial greasing is inconvenient, troublesome maintenance.In addition, flashboard and valve seat generally adopt import and export double sealing structure, and under valve closing state, valve body lumen medium Yin Wendu raises to produce and extremely boosts, and dangerous body strength, valve body bursting accident even occurs.
Summary of the invention
The purpose of this utility model is the problem existing for prior art, when the rear appearance leakage of filler wearing and tearing between a kind of valve rod and valve gap is provided, can carry out automatic greasing sealing, easy to maintenance, sealability is reliable, prevent valve pocket occur extremely the boosting low-temperature brake valve of phenomenon.
The technical solution of the utility model comprises valve body, flashboard, valve rod, valve gap, handwheel, Sealing and assembling set, flashboard adopts wedge shape flashboard, valve rod lower end is connected with flashboard, valve rod upper end is fixedly connected with handwheel through Stem Mut, packing seal letter is installed between valve gap and valve rod, and valve gap adopts and lengthens neck structure; Be mainly that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring be set, vacuum ring inner chamber is communicated with automatic greasing device, and the upper end of upper filler is provided with filler automatic compensator; Described automatic greasing device is comprised of the signal emitter and the greasing solenoid valve that are arranged between lower filler and vacuum ring, and the control signal of signal emitter is connected in the power circuit of greasing solenoid valve; Described filler automatic compensator is comprised of the butterfly spring being arranged between Gland and hold-down grid; Between valve body lumen and valve body inlet passage, be provided with pressure release passage.
In above technological scheme, pressure release passage adopts and at wedge shape flashboard surrounding end face center, manufactures the relief hole composition of manufacturing connected ring connected in star and valve body inlet passage on annular groove and flashboard.
One of advantage of the present utility model is that packing seal letter adopts dual pressing sealing structure, the middle vacuum ring of installing carries out greasing sealing, make lumen form triple seal structure, vacuum ring inner chamber is communicated with automatic greasing device, when occurring to leak, filler wearing and tearing automatically carry out greasing sealing, solved and be installed on the artificial greasing inconvenience of the valve using in field, problem difficult in maintenance, has improved the lumen sealing reliability between valve rod and valve gap;
Two of advantage of the present utility model is, in the upper end of upper filler, filler automatic compensator is set, and after filler is frayed, the elastic force automatic impaction packing seal letter of filler automatic compensator butterfly spring, keeps lumen sealability;
Three of advantage of the present utility model is, between valve body lumen and valve body inlet passage, pressure release passage is set, and avoids occurring that lumen boosts extremely that valve body bursting accident occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Low-temperature brake valve as shown in Figure 1, comprise valve body 1, flashboard 2, valve rod 3, valve gap 4, handwheel 13, Sealing and assembling set, flashboard 2 adopts wedge shape flashboard, valve rod 3 lower ends are connected with flashboard 2, valve rod 3 upper ends are fixedly connected with handwheel 13 through Stem Mut, between valve gap 4 and valve rod 3, packing seal letter is installed, valve gap 4 adopts and lengthens neck structure, reduces the impact of temperature on packing seal letter sealability.Packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring 5 is set, and vacuum ring 5 inner chambers are communicated with automatic greasing device, make to form three seal structures between valve rod 3 and valve gap 4.Described automatic greasing device is comprised of the signal emitter 8 and the greasing solenoid valve 10 that are arranged between lower filler and vacuum ring 5, and the control signal of signal emitter 8 is connected in the power circuit of greasing solenoid valve 10.Signal emitter 8 can be according to the different adopts pressure sensors of working medium or liquid sensor, gas transducer, and the control signal of signal emitter 8 is by carrying joint 9 outputs, and greasing solenoid valve 10 is by greasing joint 6 connection vacuum rings 5.Instantly filler frayed after, when medium leaks into signal emitter 8 place, signal emitter 8 is converted to electrical signal by the leakage medium signal detecting, and greasing solenoid valve 10 is opened vacuum ring 5 greasings.The upper end of upper filler is provided with filler automatic compensator, this filler automatic compensator is comprised of the butterfly spring 7 being arranged between Gland 11 and hold-down grid 12, after filler is frayed, the elastic force automatic impaction packing seal letter of butterfly spring 7, keeps the lumen sealability between valve rod 3 and valve gap 4; Between valve body 1 lumen and valve body 1 inlet passage, be provided with pressure release passage, this pressure release passage adopts to be manufactured the relief hole of manufacturing connected ring connected in star and valve body 1 inlet passage on annular grooves and flashboard 2 and forms at flashboard 2 surrounding end face centers, avoid occurring lumen generation valve body 1 bursting accident that extremely boosts.
Claims (2)
1. a low-temperature brake valve, comprise valve body (1), flashboard (2), valve rod (3), valve gap (4), handwheel (13), Sealing and assembling set, flashboard (2) adopts wedge shape flashboard, valve rod (3) lower end is connected with flashboard (2), valve rod (3) upper end is fixedly connected with handwheel (13) through Stem Mut, between valve gap (4) and valve rod (3), packing seal letter is installed, valve gap (4) adopts and lengthens neck structure; It is characterized in that packing seal letter adopts upper filler and the dual pressing sealing structure of lower media assemblage, between upper filler and lower filler, vacuum ring (5) is set, vacuum ring (5) inner chamber is communicated with automatic greasing device, and the upper end of upper filler is provided with filler automatic compensator; Described automatic greasing device is comprised of the signal emitter (8) and the greasing solenoid valve (10) that are arranged between lower filler and vacuum ring (5), and the control signal series connection of signal emitter (10) is in the power circuit of greasing solenoid valve (10); Described filler automatic compensator is comprised of the butterfly spring (7) being arranged between Gland (11) and hold-down grid (12); Wedge shape flashboard surrounding end face center is shaped with annular groove, is shaped with the pressure release passage of connected ring connected in star and valve body (1) inlet passage on flashboard (2).
2. low-temperature brake valve according to claim 1, is characterized in that pressure release passage adopts the relief hole of manufacturing upper manufacture this annular groove of connection of annular groove and flashboard (2) and valve body (1) inlet passage at wedge shape flashboard surrounding end face center to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362964.6U CN203926866U (en) | 2014-06-25 | 2014-06-25 | Low-temperature brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362964.6U CN203926866U (en) | 2014-06-25 | 2014-06-25 | Low-temperature brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926866U true CN203926866U (en) | 2014-11-05 |
Family
ID=51822678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420362964.6U Active CN203926866U (en) | 2014-06-25 | 2014-06-25 | Low-temperature brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909858A (en) * | 2016-06-30 | 2016-08-31 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm actuator and safety valve |
-
2014
- 2014-06-25 CN CN201420362964.6U patent/CN203926866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909858A (en) * | 2016-06-30 | 2016-08-31 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm actuator and safety valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203868422U (en) | Integrated duplex ball valve | |
| CN203286121U (en) | Self-sealing gate valve | |
| CN204004499U (en) | A kind of double-valve-seat Double-sealing plate sluice valve | |
| CN203009897U (en) | Internal-adjustment overall ball valve for top assembling at high temperature | |
| CN203926866U (en) | Low-temperature brake valve | |
| CN108980398B (en) | Double-sealing ball valve seat with compact structure | |
| CN207064702U (en) | A kind of Subzero valve | |
| CN201526687U (en) | Sealing structure between high-temperature high-pressure stop valve cap and valve base | |
| CN203836245U (en) | Four-eccentricity all-metal both-way sealing butterfly valve | |
| CN203926887U (en) | Cryogenic ball valve | |
| CN203431230U (en) | Integrated type oblique ball valve | |
| CN206513850U (en) | A kind of multi-functional pressure/flow control valve for having good sealing property concurrently | |
| CN205350424U (en) | High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat | |
| CN204004491U (en) | A kind of back seal dark rod flat plate gate valve of online replacing filler | |
| CN210240600U (en) | Helium-level elastic double-sealing stop valve clack structure | |
| CN202545835U (en) | Metal membrane stop valve | |
| CN203442256U (en) | Connection structure of pressure reducing valve part and valve body | |
| CN203927041U (en) | Cryogenic globe valve | |
| CN201909103U (en) | Filler internal pressure automatic seal valve capable of forming self-tight seal | |
| CN203131074U (en) | Wedge gate valve | |
| CN202884177U (en) | Low-temperature stop valve with decompression hole | |
| CN202674355U (en) | Flat gate valve | |
| CN201672115U (en) | High pressure gas safety valve | |
| CN201934780U (en) | Modified filler pressing sleeve device | |
| CN102032389A (en) | Filler internal pressure self-sealing valve capable of forming self-energizing seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |