CN207145700U - Pilot-operated type solves safely pressure valve - Google Patents
Pilot-operated type solves safely pressure valve Download PDFInfo
- Publication number
- CN207145700U CN207145700U CN201721153658.1U CN201721153658U CN207145700U CN 207145700 U CN207145700 U CN 207145700U CN 201721153658 U CN201721153658 U CN 201721153658U CN 207145700 U CN207145700 U CN 207145700U
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- valve
- pilot
- diaphragm
- pilot valve
- hole
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Abstract
The utility model discloses a kind of pilot-operated type to solve safely pressure valve, aiming to solve the problem that the speed of pilot-operated type safety solution pressure valve breakdown action can not be adjusted, pilot valve there is a situation where to open at lower pressures, the bad deficiency of sealing property in the case of close to set-pressure.The utility model includes valve body, bonnet, main valve clack, bonnet upper end connects pilot valve body, valve body is provided with into pressure hole and decompression hole, enter to press hole upper end that valve seat is installed in valve pocket, bonnet lower end connects guide sleeve, guide sleeve is extended in valve pocket, and main valve clack is arranged in guide sleeve, and main valve clack lower end is closely supported on valve seat；Pilot valve chamber is provided with pilot valve body, pilot valve body is provided with the pilot valve hole connected with pilot valve chamber, pilot valve hole and enter to press connecting tube between hole, pilot valve body upper end connects diaphragm housing, upper diaphragm is installed in diaphragm housing, lower diaphragm is connected between diaphragm housing and pilot valve body, diaphragm chamber is formed between upper diaphragm and lower diaphragm, pilot valve hole connects with diaphragm chamber.
Description
Technical field
A kind of safety valve is the utility model is related to, more specifically, it relates to which a kind of pilot-operated type solves safely pressure valve.
Background technology
Pilot operated safety valve is a kind of safeguard protection valve, and its opening and closing element is in normally off under by external force effect, when
Pressure medium rise in equipment or pipeline, automatically turn on during more than setting, by outside system discharge medium prevent pipe
Pressure medium exceedes specified value in road or equipment.The many pilot-operated types used at present solve the speed of pressure valve breakdown action not safely
Can regulation, pilot valve there is a situation where to open at lower pressures, and sealing property is not in the case of close to set-pressure
It is good.
Utility model content
The speed that the utility model overcomes pilot-operated type safety solution pressure valve breakdown action can not be adjusted, and pilot valve is in relatively low pressure
There is a situation where to open under power, the bad deficiency of sealing property in the case of close to set-pressure, there is provided Yi Zhongxian
Solution pressure valve, the speed of its breakdown action can be adjusted conduction safely, and pilot valve remains to accurately open at lower pressures, close
Excellent sealing is remained in the case of set-pressure.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：A kind of pilot-operated type solves safely pressure valve,
Including valve body, bonnet, main valve clack, bonnet upper end connection pilot valve body, valve body is interior to be provided with valve pocket, and valve body lower end is provided with and connected with valve pocket
Enter to press hole, valve body side is provided with decompression hole connect with valve pocket, enters to press installation valve seat in hole upper end in valve pocket, bonnet lower end connects
Guide sleeve, guide sleeve are extended in valve pocket, and main valve clack is arranged in guide sleeve, and main valve clack lower end is closely supported on valve seat；Lead
Pilot valve chamber is provided with valve body, pilot valve chamber lower end connects with being oriented to set upper side, and pilot valve body is provided with the pilot valve hole connected with pilot valve chamber,
Pilot valve hole and enter to press connecting tube between hole, pilot valve intracavitary is provided with pilot valve valve, guide valve seat, and valve rod assembly is connected on pilot valve valve,
Pilot valve valve lower end is closely supported on guide valve seat, pilot valve body upper end connection diaphragm housing, and upper diaphragm, film are provided with diaphragm housing
Lower diaphragm is connected between piece housing and pilot valve body, diaphragm chamber is formed between upper diaphragm and lower diaphragm, pilot valve hole connects with diaphragm chamber,
Upper diaphragm and lower diaphragm are connected with valve rod assembly；Adjusting screw is connected on pilot valve body, adjusting screw front end is provided with metering needle, adjusts
Markingoff pin is arranged in pilot valve chamber and is directed at the setting of pilot valve hole, the tapered structure in metering needle front end.
Pilot-operated type safely solution pressure valve press hole and system connectivity in use, entering, system media by conduit be transported to diaphragm chamber,
In pilot valve chamber, guide sleeve, main valve clack is in closure state in self gravitation and guide sleeve under pressure medium effect.When in system
Pressure rise, during more than set-pressure, valve rod assembly is moved up, and the pilot valve valve installed in pilot valve intracavitary is jacked up upwards, is led
The outside release of valve pocket, so that pressure in guide sleeve reduces, main valve clack is jacked up upwards, medium by valve pocket, decompression hole to
Outer release.As a result of upper diaphragm and lower diaphragm structure, pilot valve is set to remain to accurately open at lower pressures, close to whole
Excellent sealing is remained in the case of constant-pressure.Adjusting screw is rotated, metering needle is stretched into pilot valve hole, regulation pilot valve hole direction is led
The openings of sizes of valve pocket, so as to which the speed of main valve clack breakdown action be adjusted.When pilot valve hole, which is conditioned pin, to be closed completely,
Main valve clack breakdown action it is fastest.The speed of this pilot-operated type solution pressure valve breakdown action safely can be adjusted, pilot valve compared with
Remain to accurately open under low pressure, excellent sealing is remained in the case of close to set-pressure.
Preferably, diaphragm housing includes upper connection cover, lower connection cover, upper connection cover edge is provided with the upper company of downward bending
Socket part, lower connection cover edge are provided with connecting portion under upward bending, and upper connecting portion and lower connecting portion are closely joined together, upper diaphragm
It is connected between connecting portion and lower connecting portion.Diaphragm shell structure is simple, easy to connect.
Preferably, pilot valve valve lower end is connected with seal disc, seal disc outward flange is provided with downwardly projecting sealing bulge loop, led
Valve seat upper end is provided with sealing ring, and sealing bulge loop is connected on sealing ring.Pilot valve flap seal is good.
Preferably, valve rod assembly includes valve rod, positioning sleeve, top board, lower platen, adjusting rod, diaphragm housing upper end connects
Pilot valve lid is connect, adjusting rod is threaded in pilot valve and covers end, and valve rod lower end is in hemispherical configuration, and it is in indent that pilot valve valve upper end, which is provided with,
The link slot of hemispherical configuration, valve rod lower end are movably connected in link slot, and positioning sleeve, top board, lower platen are sleeved on valve
On bar, lower diaphragm is arranged between lower platen and positioning sleeve lower end, and upper diaphragm is arranged between top board and positioning set upper side, on
Setting spring is installed on pressing plate, spring base is installed between setting spring upper end and adjusting rod.In the presence of setting spring
Pilot valve valve is tightly connected on guide valve seat by valve rod lower end, and valve rod lower end is in hemispherical configuration and is movably arranged on pilot valve valve
In in the hemispherical link slot of indent, pilot valve valve can be achieved makes heart action by oneself, it is ensured that the sealing property of pilot valve valve.Rotate regulation
Bar adjusts the decrement of setting spring, and set-pressure is adjusted.
Preferably, main valve clack lower end is connected with abutment ring, abutment ring lower surface inward flange position connects bezel ring, and bezel ring, is tight
Close to be connected to main valve clack lower end, valve seat upper end is provided with seal convexity, and seal convexity is in evagination arcuate structure, and abutment ring lower surface is tight
It is close to be supported on seal convexity.Main valve clack closing seam is good.
Compared with prior art, the beneficial effects of the utility model are：Pilot-operated type solves safely the speed of pressure valve breakdown action
It can adjust, pilot valve is remained to accurately open at lower pressures, and excellent sealing is remained in the case of close to set-pressure.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
In figure：1st, valve body, 2, bonnet, 3, main valve clack, 4, pilot valve body, 5, valve pocket, 6, enter to press hole, 7, decompression hole, 8, valve seat,
9th, guide sleeve, 10, pilot valve chamber, 11, pilot valve hole, 12, conduit, 13, pilot valve valve, 14, guide valve seat, 15, diaphragm housing, 16, upper film
Piece, 17, lower diaphragm, 18, diaphragm chamber, 19, adjusting screw, 20, metering needle, 21, upper connection cover, 22, lower connection cover, 23, upper company
Socket part, 24, lower connecting portion, 25, seal disc, 26, sealing bulge loop, 27, sealing ring, 28, valve rod, 29, positioning sleeve, 30, top board,
31st, lower platen, 32, adjusting rod, 33, pilot valve lid, 34, link slot, 35, setting spring, 36, spring base, 37, abutment ring, 38, lid
Ring, 39, seal convexity.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically to retouch
State：
Embodiment：A kind of pilot-operated type solves safely pressure valve（Referring to accompanying drawing 1）, including valve body 1, bonnet 2, main valve clack 3, on bonnet
End connection pilot valve body 4, is provided with valve pocket 5 in valve body, valve body lower end be provided with connected with valve pocket enter to press hole 6, valve body side provided with
The decompression hole 7 of valve pocket connection, enter to press in valve pocket hole upper end that valve seat 8 is installed, bonnet lower end connection guide sleeve 9, guide sleeve extends to
In valve pocket, guide sleeve lower end is connected with valve seat, and guide sleeve is provided with several through holes close to lower end outer wall, and main valve clack is arranged on and led
Into set, main valve clack lower end is closely supported on valve seat；Pilot valve chamber 10 is provided with pilot valve body, pilot valve chamber lower end is with being oriented to set upper side
Connection, pilot valve body are provided with the pilot valve hole 11 that is connected with pilot valve chamber, pilot valve hole and enter to press connecting tube 12 between hole, pilot valve intracavitary
Pilot valve valve 13, guide valve seat 14 are installed, valve rod assembly is connected on pilot valve valve, pilot valve valve lower end is closely supported on guide valve seat, led
Valve body upper end connects diaphragm housing 15, is provided with upper diaphragm 16 in diaphragm housing, lower film is connected between diaphragm housing and pilot valve body
Piece 17, diaphragm chamber 18 is formed between upper diaphragm and lower diaphragm, pilot valve hole connects with diaphragm chamber, and upper diaphragm and lower diaphragm are and valve rod
Component connects；Adjusting screw 19 is connected on pilot valve body, adjusting screw front end is provided with metering needle 20, and metering needle is arranged in pilot valve chamber
And alignment pilot valve hole is set, the tapered structure in metering needle front end.Diaphragm housing includes upper connection cover 21, lower connection cover 22, upper company
The upper connecting portion 23 that lid edge is provided with downward bending is connect, lower connection cover edge is provided with connecting portion 24 under upward bending, upper connecting portion
It is closely joined together with lower connecting portion, upper diaphragm is connected between connecting portion and lower connecting portion.Pilot valve valve lower end is connected with
Seal disc 25, seal disc outward flange are provided with downwardly projecting sealing bulge loop 26, and guide valve seat upper end is provided with sealing ring 27, seals bulge loop
It is connected on sealing ring.Valve rod assembly includes valve rod 28, positioning sleeve 29, top board 30, lower platen 31, adjusting rod 32, diaphragm shell
Body upper end connection pilot valve lid 33, adjusting rod are threaded in pilot valve and cover end, and valve rod lower end is in hemispherical configuration, pilot valve valve upper end
Provided with the link slot 34 in indent hemispherical configuration, valve rod lower end is movably connected in link slot, positioning sleeve, top board, is pushed
Plate is sleeved on valve rod, and lower diaphragm is arranged between lower platen and positioning sleeve lower end, and upper diaphragm is arranged on top board and positioning
Setting spring 35 is installed between set upper side, on top board, spring base 36 is installed between setting spring upper end and adjusting rod.It is main
Flap lower end is connected with abutment ring 37, and abutment ring lower surface inward flange position connection bezel ring, 38, bezel ring, is close-coupled at main valve clack
Lower end, valve seat upper end are provided with seal convexity 39, and seal convexity is in evagination arcuate structure, and abutment ring lower surface is closely supported on sealing
In projection.
Pilot-operated type safely solution pressure valve press hole and system connectivity in use, entering, system media by conduit be transported to diaphragm chamber,
In pilot valve chamber, guide sleeve, main valve clack is in closure state in self gravitation and guide sleeve under pressure medium effect.When in system
Pressure rise, during more than set-pressure, valve rod assembly is moved up, and the pilot valve valve installed in pilot valve intracavitary is jacked up upwards, is led
The outside release of valve pocket, so that pressure in guide sleeve reduces, main valve clack is jacked up upwards, medium by valve pocket, decompression hole to
Outer release.As a result of upper diaphragm and lower diaphragm structure, pilot valve is set to remain to accurately open at lower pressures, close to whole
Excellent sealing is remained in the case of constant-pressure.Adjusting screw is rotated, metering needle is stretched into pilot valve hole, regulation pilot valve hole direction is led
The openings of sizes of valve pocket, so as to which the speed of main valve clack breakdown action be adjusted.When pilot valve hole, which is conditioned pin, to be closed completely,
Main valve clack breakdown action it is fastest.
Embodiment described above is a kind of preferable scheme of the present utility model, not the utility model is made any
Formal limitation, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (5)
1. a kind of pilot-operated type solves safely pressure valve, it is characterized in that, including valve body, bonnet, main valve clack, bonnet upper end connection pilot valve body,
Valve pocket is provided with valve body, valve body lower end enters to press hole provided with what is connected with valve pocket, and valve body side is provided with the decompression hole connected with valve pocket,
Enter to press hole upper end that valve seat, bonnet lower end connection guide sleeve are installed in valve pocket, guide sleeve is extended in valve pocket, and main valve clack is arranged on and led
Into set, main valve clack lower end is closely supported on valve seat；Pilot valve chamber is provided with pilot valve body, pilot valve chamber lower end connects with being oriented to set upper side
Logical, pilot valve body is provided with the pilot valve hole connected with pilot valve chamber, pilot valve hole and enters to press connecting tube between hole, and pilot valve intracavitary is provided with
Pilot valve valve, guide valve seat, valve rod assembly is connected on pilot valve valve, pilot valve valve lower end is closely supported on guide valve seat, and pilot valve body upper end connects
Diaphragm housing is connect, upper diaphragm is installed in diaphragm housing, lower diaphragm, upper diaphragm and lower film are connected between diaphragm housing and pilot valve body
Diaphragm chamber is formed between piece, pilot valve hole is connected with diaphragm chamber, and upper diaphragm and lower diaphragm are connected with valve rod assembly；Connect on pilot valve body
Adjusting screw is connect, adjusting screw front end is provided with metering needle, and metering needle is arranged in pilot valve chamber and is directed at the setting of pilot valve hole, metering needle
The tapered structure in front end.
2. pilot-operated type according to claim 1 solves safely pressure valve, it is characterized in that, diaphragm housing includes upper connection cover, lower company
Lid is connect, upper connection cover edge is provided with the upper connecting portion of downward bending, and lower connection cover edge is provided with connecting portion under upward bending, upper company
Socket part and lower connecting portion are closely joined together, and upper diaphragm is connected between connecting portion and lower connecting portion.
3. pilot-operated type according to claim 1 solves safely pressure valve, it is characterized in that, pilot valve valve lower end is connected with seal disc, close
Closing disk outward flange is provided with downwardly projecting sealing bulge loop, and guide valve seat upper end is provided with sealing ring, and sealing bulge loop is connected on sealing ring.
4. the pilot-operated type according to claim 1 or 2 or 3 solves safely pressure valve, it is characterized in that, valve rod assembly includes valve rod, determined
Position set, top board, lower platen, adjusting rod, diaphragm housing upper end connection pilot valve lid, adjusting rod are threaded in pilot valve and cover end,
Valve rod lower end is in hemispherical configuration, and pilot valve valve upper end is provided with the link slot in indent hemispherical configuration, and valve rod lower end is flexibly connected
In link slot, positioning sleeve, top board, lower platen are sleeved on valve rod, and lower diaphragm is arranged on lower platen and positioning sleeve lower end
Between, upper diaphragm is arranged between top board and positioning set upper side, is provided with setting spring on top board, setting spring upper end and
Spring base is installed between adjusting rod.
5. the pilot-operated type according to claim 1 or 2 or 3 solves safely pressure valve, it is characterized in that, main valve clack lower end is connected with abutting
Ring, abutment ring lower surface inward flange position connection bezel ring, bezel ring, are close-coupled at main valve clack lower end, and it is convex that valve seat upper end is provided with sealing
Rise, seal convexity is in evagination arcuate structure, and abutment ring lower surface is closely supported on seal convexity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153658.1U CN207145700U (en) | 2017-09-09 | 2017-09-09 | Pilot-operated type solves safely pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153658.1U CN207145700U (en) | 2017-09-09 | 2017-09-09 | Pilot-operated type solves safely pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145700U true CN207145700U (en) | 2018-03-27 |
Family
ID=61678290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721153658.1U Expired - Fee Related CN207145700U (en) | 2017-09-09 | 2017-09-09 | Pilot-operated type solves safely pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319268A (en) * | 2019-08-01 | 2019-10-11 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure relief valve |
-
2017
- 2017-09-09 CN CN201721153658.1U patent/CN207145700U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319268A (en) * | 2019-08-01 | 2019-10-11 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 Termination date: 20210909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |