CN207848441U - Pilot operated pressure relief valve - Google Patents
Pilot operated pressure relief valve Download PDFInfo
- Publication number
- CN207848441U CN207848441U CN201820088443.4U CN201820088443U CN207848441U CN 207848441 U CN207848441 U CN 207848441U CN 201820088443 U CN201820088443 U CN 201820088443U CN 207848441 U CN207848441 U CN 207848441U
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- Prior art keywords
- valve
- pilot
- interior
- push plate
- spool
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Abstract
A kind of pilot operated pressure relief valve.It is characterized in that：It is connected with external pipe between the intake channel and exit passageway, needle valve, triple valve, pilot valve are equipped on the external pipe successively, the needle valve is connected to intake channel, the pilot valve is connected to exit passageway, the triple valve is connected to upper chamber, the normally closed setting of pilot valve, and intake channel is connected by pressure pipe.It the advantage is that and use above scheme, compared with existing conventional relief valve, pressure release control is carried out using external pipe, is not limited by main valve size so that structure is simpler, reduces cost, and ensures that pressure release is stablized, and service life is long.
Description
Technical field
The utility model is related to a kind of relief valves, are specifically related to a kind of pilot operated pressure relief valve.
Background technology
In valve pipeline, when import end pressure is excessive, pipeline may be destroyed, may be set off an explosion what is more, pressure release
Valve is then a kind of valve that can be adjusted according to the operating pressure automatic open close of system, when import end pressure is more than specified pressure
When, relief valve can automatically turn on, and to achieve the effect that pressure release, ensure pipeline safety.
In general, relief valve includes valve body, valve seat, spool, valve rod, spool connects elastic compression devices, and spool passes through elasticity
Pressure is sealed with seat compression, when valve body import end pressure is excessive, then overcomes elastic pressure that spool, Open valve is pushed to let out
It is resetted under elastic pressure effect again after pressure.
But the relief valve of this structure, valve is bigger, and corresponding elastic compression devices are also bigger, bulky, at
This height, and inconvenience is adjusted to specified vent pressure, it is easy impaired failure, it is low to benefit from the service life.
Utility model content
In order to overcome the shortcomings of that background technology, the utility model provide a kind of pilot operated pressure relief valve.
Technical solution used by the utility model：A kind of pilot operated pressure relief valve, including valve body, interior valve deck, bonnet, push away
Plate, ring film, valve seat, spool, pilot sleeve, spring, valve rod；The interior valve deck is mounted on valve body top with bonnet, and
Cavity is formed between the interior valve deck and bonnet, the ring film is connect with push plate outer edge, and is located in described
Between valve deck, bonnet, cavity is separated into upper chamber and lower chambers；Intake channel, exit passageway are formed in the valve body,
The internal valve, which covers, is formed with through-hole connection lower chambers and exit passageway；The valve seat is fixedly mounted in valve body, and positioned at into
At communication port between mouth channel and exit passageway, in the spool setting valve body, and its lower end can coordinate with valve base sealing；Institute
It states pilot sleeve and passes through interior valve deck, slide and coordinate with interior valve deck, and pilot sleeve both ends are respectively held against push plate and spool, the bullet
Spring both ends are then respectively held against bonnet, and push plate, and drive push plate downward；The valve rod is arranged in pilot sleeve, and its both ends
It is separately connected spool and push plate；Be connected with external pipe between the intake channel and exit passageway, on the external pipe according to
Secondary to be equipped with needle valve, triple valve, pilot valve, the needle valve is connected to intake channel, and the pilot valve is connected to exit passageway, described
Triple valve is connected to upper chamber, the normally closed setting of pilot valve, and connects intake channel by pressure pipe.
Filter is additionally provided on the external pipe, the filter is arranged between intake channel and needle valve.
The valve rod both ends are equipped with external thread structure, and are each passed through spool and push plate, are locked by locking nut, will
Push plate, pilot sleeve, spool link into an integrated entity.
The push plate includes the clamping plate of two arrangements symmetrical above and below, and the ring film is located between two clamping plates, institute
State the first positioning groove for being formed on clamping plate and being adapted to pilot sleeve.
The spool includes sealing plate, sealing ring, pressing plate, and the sealing plate upper surface is formed with to be adapted to pilot sleeve
Second positioning groove, lower face are formed with annular mounting groove, and the sealing ring is mounted in annular mounting groove, and is limited by pressing plate
Position is fixed.
Bonnet, lower face center has been formed down annular convex platform, and the spring is set in outside annular convex platform, described
The locking nut of valve rod upper end is set in annular convex platform, and slides cooperation with it.
Oilless bearing is equipped between the pilot sleeve and interior valve deck.
It is formed with external thread structure outside the valve seat, the valve seat is fixedly mounted on by screw-thread fit in valve body.
The course of work of the utility model：When the pressure in intake channel is not up to setting value, pilot valve is in normally closed
State, the medium in intake channel flow into upper chamber by external pipe so that the indoor pressure of epicoele in intake channel
Pressure is consistent, and spool can compress downwards valve base sealing under the action of the spring, and valve is closed；
When the pressure rise in intake channel reaches setting value, pilot valve can be opened, the medium energy in intake channel
Exit passageway is flowed by external pipe so that the indoor pressure reduction of epicoele is consistent with exit passageway internal pressure power, to
It is detached with valve seat so that the pressure in intake channel overcomes the active force of spring that spool is pushed to move up, valve opening is realized
Pressure release；
After the completion of pressure release, the pressure in intake channel drops under setting value, and pilot valve is re-closing off, intake channel
Interior medium flows into upper chamber by external pipe so that and the indoor pressure of epicoele is consistent with the pressure in intake channel,
Spool can compress downwards valve base sealing under the action of the spring, and valve is again switched off.
The utility model has the beneficial effects that：Using above scheme, compared with existing conventional relief valve, using external pipe
Pressure release control is carried out, is not limited by main valve size so that structure is simpler, reduces cost, and ensures that pressure release is stablized, and uses
Long lifespan.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment pilot operated pressure relief valve.
Fig. 2 be the utility model embodiment push plate, spool, valve rod, sleeve attachment structure schematic diagram.
1- valve bodies in figure, 101- intake channels, 102- exit passageways, valve deck in 2-, 3- bonnet,s, 4- push plates, 5- annulars
Diaphragm, 6- valve seats, 7- spools, 71- seal receptacles, 72- sealing rings, 73- pressing plates, 8- pilot sleeves, 9- springs, 10- valve rods, 11-
External pipe, 12- needle valves, 13- triple valves, 14- pilot valves, 15- pressure pipes, 16- filters, 17- locking nuts, 18- without
Oil bearing.
Specific implementation mode
The utility model embodiment is described further below in conjunction with the accompanying drawings：
As shown, a kind of pilot operated pressure relief valve, including valve body 1, interior valve deck 2, bonnet, 3, push plate 4, ring film 5,
Valve seat 6, spool 7, pilot sleeve 8, spring 9, valve rod 10；The interior valve deck 2 is mounted on 1 top of valve body with bonnet, 3, and described
Cavity is formed between interior valve deck 2 and bonnet, 3, the ring film 5 is connect with 4 outer edge of push plate, and is located in described
Between valve deck 2, bonnet, 3, cavity is separated into upper chamber and lower chambers；It is formed with intake channel 101 in the valve body 1, goes out
Mouthful channel 102 is formed with through-hole connection lower chambers and exit passageway 102 on the interior valve deck 2, to eliminate the pressure in exit passageway
Influence of the power to spool, push plate；The valve seat 6 is fixedly mounted in valve body 1, and positioned at intake channel 101 and exit passageway 102
Between communication port at, the spool 7 be arranged valve body 1 in, and its lower end can with valve seat 6 seal coordinate；The pilot sleeve 8 is worn
Interior valve deck 2 is crossed, slides and coordinates with interior valve deck 2, and 8 both ends of pilot sleeve are respectively held against push plate 4 and spool 7,9 both ends of the spring
It is then respectively held against bonnet, 3 and push plate 4, and drives push plate 4 downward；The valve rod 10 is arranged in pilot sleeve 8, and its both ends
It is separately connected spool 7 and push plate 4；External pipe 11 is connected between the intake channel 101 and exit passageway 102, it is described outer
Needle valve 12, triple valve 13, pilot valve 14 are equipped on take over road 11 successively, the needle valve 12 is connected to intake channel 101, described
The connection exit passageway 102 of pilot valve 14, the connection of the triple valve 13 upper chamber, 14 normally closed setting of the pilot valve, and by taking
Pressure pipe 15 connects intake channel 101.
The course of work of above-mentioned pilot operated pressure relief valve：Pressure in intake channel is P1, and the pressure in exit passageway is P2,
It is P0, P1 ＞ P2 to make the pressure set points that pilot valve 14 is opened；
When the pressure in intake channel 101 is not up to setting value, i.e. P0 ＞ P1, pilot valve 14 is in normally off, into
Medium in mouth channel 101 passes through external pipe 11 and flows into upper chamber so that in the indoor pressure of epicoele and intake channel 101
Pressure is consistent, and spool 7 can compress valve seat 6 downwards under the action of spring 9 and realize that sealing, main valve are closed；
When the pressure rise in intake channel 101 reaches setting value, i.e. P1 >=P0, pilot valve 14 is opened, intake channel
Medium in 101 can flow into exit passageway 102 by external pipe 11 so that in the indoor pressure reduction of epicoele and exit passageway
Pressure is consistent so that the pressure in intake channel 101 overcome spring 9 active force push spool 7 move up with
Valve seat 6 detaches, and main valve is opened, and realizes pressure release；
After the completion of pressure release, the pressure in intake channel drops under setting value, i.e. P0 ＞ P1, and pilot valve 14 closes again
It closes, the medium in intake channel 101 flows into upper chamber by external pipe 11 so that the indoor pressure of epicoele and intake channel
Pressure in 101 is consistent, and spool 7 can compress the sealing of valve seat 6 downwards under the action of spring 9, and main valve is again switched off.
According to different working conditions, the pressure set points that pilot valve 14 is opened can be adjusted.
Compared with existing conventional relief valve, pressure release control is carried out using external pipe, is not limited by main valve size so that knot
Structure is simpler, reduces cost, and ensures that pressure release is stablized, and service life is long.
As shown, being additionally provided with filter 16 on the external pipe 11, the filter 16 is arranged in intake channel 101
Between needle valve 12, filter 16 is so that medium before realizing circulation by external pipe 11, plays the effect of a filtering
Fruit avoids impurity from passing through, and causes to block, and ensures pressure release working performance.
As shown, 10 both ends of the valve rod are equipped with external thread structure, and it is each passed through spool 7 and push plate 4, passes through lock
Tight nut 17 is locked, and push plate 4, pilot sleeve 8, spool 7 are linked into an integrated entity, and connection type is simple, is easily installed, and is installed
Securely, it is connect jointly with valve rod 10 by pilot sleeve 8 between push plate 4 and spool 7, not only ensure that working strength requirement, and
And weight is alleviated, effect is more preferable.
Wherein, the push plate 4 includes the clamping plate of two arrangements symmetrical above and below, and the ring film 5 is located in two clamping plates
Between, the first positioning groove being adapted to pilot sleeve 8 is formed on the clamping plate, the spool 7 includes sealing plate 71, sealing
Circle 72, pressing plate 73,71 upper surface of the sealing plate are formed with the second positioning groove being adapted to pilot sleeve 8, and lower face is formed
There are annular mounting groove, the sealing ring 72 to be mounted in annular mounting groove, and is limited and fixed by pressing plate 73；It is easy for installation, and
And the pilot sleeve 8 realizes by the first positioning groove and the second positioning groove and positions that connection is more stablized.
As shown, 3 lower face center of the bonnet, has been formed down annular convex platform 31, the lock of 10 upper end of the valve rod
Tight nut 17 is set in annular convex platform 31, and slides cooperation with it, is coordinated in conjunction with conducting sleeve 8 and the sliding of interior valve deck 2, into
One step ensures spool, push plate, valve rod, concentricity when pilot sleeve moves up and down.
9 upper end of the spring is set in outside annular convex platform 31, and lower end is set in the first positioning groove, it is ensured that spring force
Effect balance.
As shown, oilless bearing 18 is equipped between the pilot sleeve 8 and interior valve deck 2, while ensureing concentricity,
Friction is further reduced, abrasion is reduced, improves service life.
It is formed with external thread structure outside the valve seat 6, the valve seat 6 is fixedly mounted on by screw-thread fit in valve body 1, peace
It fills more convenient.
Embodiment is not construed as the limitation to utility model, but any spiritual improvements introduced based on the utility model,
It should all be within the protection scope of the utility model.
Claims (8)
1. a kind of pilot operated pressure relief valve, including valve body（1）, interior valve deck（2）, bonnet,（3）, push plate（4）, ring film（5）, valve
Seat（6）, spool（7）, pilot sleeve（8）, spring（9）, valve rod（10）；
The interior valve deck（2）With bonnet,（3）Mounted on valve body（1）Top, and the interior valve deck（2）With bonnet,（3）Between
It is formed with cavity, the ring film（5）With push plate（4）Outer edge connects, and is located in the interior valve deck（2）, bonnet,（3）
Between, cavity is separated into upper chamber and lower chambers；
The valve body（1）Inside it is formed with intake channel（101）, exit passageway（102）, the interior valve deck（2）On be formed with through-hole
It is connected to lower chambers and exit passageway（102）；
The valve seat（6）It is fixedly mounted on valve body（1）It is interior, and it is located at intake channel（101）With exit passageway（102）Between company
Passage port, the spool（7）Valve body is set（1）It is interior, and its lower end energy and valve seat（6）Sealing cooperation；
The pilot sleeve（8）Across interior valve deck（2）, with interior valve deck（2）Sliding cooperation, and pilot sleeve（8）Both ends are supported respectively
Firmly push plate（4）With spool（7）, the spring（9）Both ends are then respectively held against bonnet,（3）With push plate（4）, and drive push plate（4）
Downwards；
The valve rod（10）It is arranged in pilot sleeve（8）It is interior, and its both ends is separately connected spool（7）With push plate（4）；
It is characterized in that：The intake channel（101）With exit passageway（102）Between be connected with external pipe（11）, described outer
Take over road（11）On successively be equipped with needle valve（12）, triple valve（13）, pilot valve（14）, the needle valve（12）It is logical to be connected to import
Road（101）, the pilot valve（14）It is connected to exit passageway（102）, the triple valve（13）It is connected to upper chamber, the pilot valve
（14）Normally closed setting, and pass through pressure pipe（15）Connect intake channel（101）.
2. pilot operated pressure relief valve according to claim 1, it is characterised in that：The external pipe（11）On be additionally provided with filtering
Device（16）, the filter（16）It is arranged in intake channel（101）With needle valve（12）Between.
3. pilot operated pressure relief valve according to claim 1, it is characterised in that：The valve rod（10）Both ends are equipped with external screw thread
Structure, and it is each passed through spool（7）With push plate（4）, pass through locking nut（17）Locking, by push plate（4）, pilot sleeve（8）, valve
Core（7）It links into an integrated entity.
4. pilot operated pressure relief valve according to claim 3, it is characterised in that：The push plate（4）It is symmetrical above and below including two
The clamping plate of arrangement, the ring film（5）It is located between two clamping plates, is formed on the clamping plate and pilot sleeve（8）It is suitable
The first positioning groove matched.
5. pilot operated pressure relief valve according to claim 3, it is characterised in that：The spool（7）Including sealing plate（71）, it is close
Seal（72）, pressing plate（73）, the sealing plate（71）Upper surface is formed with and pilot sleeve（8）Second positioning groove of adaptation,
Lower face is formed with annular mounting groove, the sealing ring（72）In annular mounting groove, and pass through pressing plate（73）Limit is solid
It is fixed.
6. pilot operated pressure relief valve according to claim 3, it is characterised in that：The bonnet,（3）Lower face center is downward
It is formed with annular convex platform（31）, the spring（9）It is set in annular convex platform（31）Outside, the valve rod（10）The locking nut of upper end
（17）It is set to annular convex platform（31）It is interior, and slide cooperation with it.
7. pilot operated pressure relief valve according to claim 1, it is characterised in that：The pilot sleeve（8）With interior valve deck（2）It
Between be equipped with oilless bearing（18）.
8. pilot operated pressure relief valve according to claim 1, it is characterised in that：The valve seat（6）It is formed with external screw thread knot outside
Structure, the valve seat（6）It is fixedly mounted on valve body by screw-thread fit（1）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820088443.4U CN207848441U (en) | 2018-01-19 | 2018-01-19 | Pilot operated pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820088443.4U CN207848441U (en) | 2018-01-19 | 2018-01-19 | Pilot operated pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207848441U true CN207848441U (en) | 2018-09-11 |
Family
ID=63415307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820088443.4U Expired - Fee Related CN207848441U (en) | 2018-01-19 | 2018-01-19 | Pilot operated pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207848441U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879633A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
| US11953098B2 (en) | 2020-06-30 | 2024-04-09 | Ademco Inc. | Inlet controlled regulating valve |
-
2018
- 2018-01-19 CN CN201820088443.4U patent/CN207848441U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
| US11828373B2 (en) | 2020-01-31 | 2023-11-28 | Ishizaki Co., Ltd. | Check valve |
| US11953098B2 (en) | 2020-06-30 | 2024-04-09 | Ademco Inc. | Inlet controlled regulating valve |
| CN112879633A (en) * | 2021-02-09 | 2021-06-01 | 国家石油天然气管网集团有限公司华南分公司 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
| CN112879633B (en) * | 2021-02-09 | 2023-01-17 | 国家石油天然气管网集团有限公司华南分公司 | Mechanical pilot type safe Y-shaped water attack relief valve directly driven by vane motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 Dongou Industrial Zone, Oubei Town, Yongjia, Wenzhou, Zhejiang Patentee after: Jinfeng Fluid Control Technology Co.,Ltd. Address before: 325000 East Ou Industrial Park, North Ou, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG JINFENG AUTOMATION METER Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20220119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |