CN108506509A - A kind of gate valve sealing structure - Google Patents
A kind of gate valve sealing structure Download PDFInfo
- Publication number
- CN108506509A CN108506509A CN201810681275.4A CN201810681275A CN108506509A CN 108506509 A CN108506509 A CN 108506509A CN 201810681275 A CN201810681275 A CN 201810681275A CN 108506509 A CN108506509 A CN 108506509A
- Authority
- CN
- China
- Prior art keywords
- flashboard
- valve
- sealing
- bracket
- voussoir
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 63
- 230000008859 change Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 2
- 230000000116 mitigating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0263—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor using particular material or covering means
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a kind of gate valve sealing structures, as the sealing structure between valve seat and flashboard, during closing gate, valve rod drives the voussoir in flashboard bracket to move downward, interaction force between voussoir and the angle skewback at run-in index flashboard back provides the initial sealing of valve than pressure, it realizes low pressure seal, and under the action of medium power, realizes the high pressure sealing of valve；During gate opening, valve rod band dynamic voussoir moves upwards, and resetting spring provides screen resilience so that gate sealing surface generates the trend for being detached from valve body sealing surface, moment of friction when mitigating the abrasion between two sealing surfaces, while also reducing valve opening and closing.The present invention is as the sealing structure between valve seat and flashboard, the sealing reliability of gate valve and the service life of valve can be improved, so that valve can realize reliable sealing under high pressure and low pressure working condition, it is sealed using simple metal, temperature in use is high, solves the problems, such as that traditional gate valve cannot be used for high temperature, superhigh temperature operating mode.
Description
Technical field
The present invention relates to a kind of gate valve sealing structures for valve field.
Background technology
Gate valve is a kind of using extensive, the cut-out cock of dependable performance.Under high temperature, high pressure operating mode, the sealing to gate valve
Performance, reliability requirements are especially high.In high temperature, high pressure engineering project, gate valve generally uses wedge-type ram seal structure,
Under the collective effect of pressure medium, the sealing performance between valve seat and flashboard ensure that.But the thermal expansion of material, valve under worst hot case
Sealing surface wear caused by the thermal stretching of bar portion position and frequently keying, it will usually lead to the hair of valve seal leakage and catching phenomenon
It is raw, seriously affect the reliability service of engineering system.
Fig. 1 is the Wedge Gate Valves sealing structure for being suitable for high temperature and high pressure condition currently on the market.Wedge-type flashboard 500 is driving
Make closing movement under the action of power downwards, since 500 both sides sealing face of flashboard and valve vertical centerline angle are 3 °~5 °, lock
The 500 tight sealing surface of seat of both sides sealing face paste of plate provides initial sealing than pressure, and under the action of high-pressure medium power, sealing is imitated
Fruit is become better and better；Simultaneously in the case where valve leaks, valve drive forces can be increased, realize forced seal.Above structure,
Under the operating mode of alternating hot and cold, due to valve internal structural member shape, the difference of material and coefficient of thermal expansion, often appear in
It is closed under worst hot case, when being restored to room temperature operating mode, flashboard 500 and 600 sealing surface locking of valve seat open and close torque and increase, sealing
Surface wear is serious or even valve can not open and close, and has seriously affected the reliability service of engineering system.
Fig. 2 is the flat gate valve sealed structute for being suitable for high temperature and high pressure condition currently on the market.The flashboard 500 of double flat line
Make closing movement downwards under the action of driving force, spring 510 is strutted since 500 inside of flashboard of double flat line is provided with,
Under the action of spring force, flashboard 500 sealing surface in both sides is adjacent to 600 sealing surface of valve seat, and provides initial sealing than pressure, in high pressure
Under the action of medium power, sealing effect is become better and better.Due to being run-in index flashboard structure, spring force and medium active force need to be passed through
Collective effect realizes valve seal, and when valve tends to open, 500 sealing surface of flashboard is with 600 sealing surface of valve seat in medium power
It is close under effect, in opening-closing process, the friction between two sealing surfaces is more serious, influences the service life of valve.And compared to wedge
Formula flashboard structure, cannot achieve forced seal.
Invention content
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of gate valve sealing structure, it can realize double
To sealing, and the keying torque of valve can be reduced, reduce the friction of flashboard and valve base chamber during valve opening and closing, extend valve
Service life.
Realizing a kind of technical solution of above-mentioned purpose is：A kind of gate valve sealing structure, including it is located at flashboard bracket, run-in index
Flashboard, voussoir, valve rod and resetting spring；
The side of left and right two of the flashboard bracket offers flashboard slot, and the top surface of the flashboard bracket is equipped with bracket branch
The center of top of support, the bracket support frame opens up through-hole, and the valve rod passes through through-hole and is arranged in the flashboard bracket
The voussoir of centre connects；
The equal grafting one run-in index flashboard, the direction lock of the run-in index flashboard in each flashboard slot
Surface on the inside of board bracket is equipped with angle skewback, and inclined-plane and the voussoir of the angle skewback match；
On the run-in index flashboard and bottom of the plate bracket is equipped with resetting spring.
Further, the quadrangle of the run-in index flashboard is opened up respectively there are one resetting spring mounting hole, and the flashboard is inserted
Each described resetting spring mounting hole is faced on slot and offers flashboard spring mounting hole, in each resetting spring mounting hole
Resetting spring there are one being all provided with.
Further, the resetting spring is using disk spring or leaf spring or cylindrical spring.
Further, it is arranged in parallel there are two described on the surface of the direction flashboard carriage inner lateral of each flashboard
Angle skewback.
Further, the surface of the voussoir carries out Surface hardening treatment, is equipped with hard surface coating.
A kind of gate valve sealing structure of the present invention, as the sealing structure between valve seat and flashboard, in the mistake of closing gate
Cheng Zhong, valve rod drive the voussoir in flashboard bracket to move downward, the phase interaction between voussoir and the angle skewback at run-in index flashboard back
The initial sealing of valve is firmly provided than pressure, realizes low pressure seal, and under the action of medium power, realize the high densification of valve
Envelope；During gate opening, valve rod band dynamic voussoir moves upwards, and resetting spring provides screen resilience so that gate sealing surface is produced
The raw trend for being detached from valve body sealing surface, mitigates the abrasion between two sealing surfaces, while moment of friction when also reducing valve opening and closing.
The present invention can improve the sealing reliability of gate valve and the service life of valve as the sealing structure between valve seat and flashboard,
So that valve can realize reliable sealing under high pressure and low pressure working condition, sealed using simple metal, temperature in use is high, solves
The problem of traditional gate valve cannot be used for high temperature, superhigh temperature operating mode.
Description of the drawings
Fig. 1 is the existing gate valve structure schematic diagram using Wedge Gate Valves sealing structure；
Fig. 2 is the existing gate valve structure schematic diagram using flat gate valve sealed structute；
Fig. 3 is a kind of structural schematic diagram of gate valve sealing structure of the present invention；
A kind of structural schematic diagram of the flashboard bracket 1 of gate valve sealing structure of the positions Fig. 4 present invention；
A kind of structural schematic diagram of the run-in index flashboard 2 of gate valve sealing structure of the positions Fig. 5 present invention.
Specific implementation mode
In order to preferably understand technical scheme of the present invention, below by specifically embodiment and in conjunction with attached drawing
It is described in detail：
Fig. 3 to Fig. 5, a kind of gate valve sealing structure of the invention are please referred to, including is located at flashboard bracket 1, run-in index flashboard
2, voussoir 3, valve rod 4 and resetting spring 5.
The side of left and right two of flashboard bracket 1 offers flashboard slot, and the top surface of flashboard bracket 1 is equipped with bracket support frame
11, the center of top of bracket support frame 11 opens up through-hole 12, and valve rod 4 passes through through-hole and the voussoir 3 in 1 center of flashboard bracket is arranged
Connection.The angle on the inclined-plane of voussoir 3 can be chosen according to actual needs, larger gradient can be set so as to be applied to amount of movement compared with
In big sealing structure.3 surface of voussoir can select its material according to working condition, and carry out adding for hard surface coating accordingly
Work.
One run-in index flashboard 2 of equal grafting, the table towards flashboard carriage inner lateral of run-in index flashboard 2 in each flashboard slot
Face is equipped with one group of two angle skewback 21, and inclined-plane and the voussoir of angle skewback 21 match.Angle skewback 21 can be whole with run-in index flashboard 2
Body machine-shaping, or use bolt by angle skewback 21 mounted on the back of a run-in index flashboard 2.
The quadrangle of run-in index flashboard 2 is opened up respectively there are one resetting spring mounting hole 22, is faced on flashboard slot each
A resetting spring mounting hole 22 offers flashboard spring mounting hole 23, be all provided in each resetting spring mounting hole there are one reset
Spring 5.The bottom of flashboard bracket 1 also is provided with resetting spring 5.Disk spring or leaf spring or cylindrical spring can be used in resetting spring 5.
When valve is closed, 11 both sides of the edge of bracket support frame on 1 top of flashboard bracket first connect with 700 inner support platform of valve body
It touches, flashboard bracket 1 and valve body 700 are opposing stationary at this time.When valve rod 4 continues to move downward, voussoir 3 is pushed to move downward, voussoir 3
Form reaction force with the angle skewback 21 at 2 back of run-in index flashboard, push run-in index flashboard 2 to both sides valve seat 600 close to, to
Reach sealing.Compared to conventional wedge-type gate plate type gate valve, rubbing between gate sealing surface and sealing surface of seat when closing valve is eliminated
It wipes, extends the service life of flashboard and sealing surface of seat, improve the reliability of gate valve.
When valve opening, valve rod 4 is moved upwards with dynamic voussoir 3, due to resetting spring group active force be more than voussoir 3 with
The frictional force of the angle skewback 21 at 2 back of run-in index flashboard, under the action of resetting spring group, inlet side run-in index flashboard 2 is detached from
Sealing surface of seat, frictional force between outlet side run-in index flashboard 2 and sealing surface of seat reduce, in this way when valve rod 4 continues to rise, band
It when movable valve carries out unlatching operation, can effectively mitigate the abrasion between two sealing surfaces, improve the service life of gate valve, while
Reduce moment of friction when valve opening and closing.
Simple metal sealing can be used in a kind of gate valve sealing structure of the present invention, therefore temperature in use is high.Pass through the choosing of material
It selects, maximum operation (service) temperature solves the problems, such as that traditional gate valve cannot be used for high temperature, superhigh temperature operating mode up to 700 DEG C.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (5)
1. a kind of gate valve sealing structure, including it is located at flashboard bracket, run-in index flashboard, voussoir, valve rod and resetting spring, feature
It is：
The side of left and right two of the flashboard bracket offers flashboard slot, and the top surface of the flashboard bracket is equipped with bracket support
The center of top of frame, the bracket support frame opens up through-hole, and the valve rod passes through through-hole with setting in flashboard bracket center
Voussoir connection；
The equal grafting one run-in index flashboard, the direction flashboard support of the run-in index flashboard in each flashboard slot
Surface on the inside of frame is equipped with angle skewback, and inclined-plane and the voussoir of the angle skewback match；
On the run-in index flashboard and bottom of the plate bracket is equipped with resetting spring.
2. a kind of gate valve sealing structure according to claim 1, which is characterized in that distinguish the quadrangle of the run-in index flashboard
It opens up there are one resetting spring mounting hole, facing each described resetting spring mounting hole on the flashboard slot offers lock
Flat spring mounting hole, is all provided with that there are one resetting springs in each resetting spring mounting hole.
3. a kind of gate valve sealing structure according to claim 1, which is characterized in that the resetting spring uses disk spring
Or leaf spring or cylindrical spring.
4. a kind of gate valve sealing structure according to claim 1, which is characterized in that the direction lock of each flashboard
The angle skewback there are two being arranged in parallel on surface on the inside of board bracket.
5. a kind of gate valve sealing structure according to claim 1, which is characterized in that it is hard that the surface of the voussoir carries out surface
Change is handled, and is equipped with hard surface coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681275.4A CN108506509A (en) | 2018-06-27 | 2018-06-27 | A kind of gate valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681275.4A CN108506509A (en) | 2018-06-27 | 2018-06-27 | A kind of gate valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506509A true CN108506509A (en) | 2018-09-07 |
Family
ID=63403904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810681275.4A Pending CN108506509A (en) | 2018-06-27 | 2018-06-27 | A kind of gate valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710567A (en) * | 2020-12-23 | 2021-04-27 | 中国人民解放军陆军工程大学 | Temperature-controllable ballistic impact experimental device |
| CN114593219A (en) * | 2022-01-25 | 2022-06-07 | 中国石油化工股份有限公司 | Flat gate valve |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706934A (en) * | 1986-08-22 | 1987-11-17 | Mark Controls Corporation | Gate valve |
| CN2240653Y (en) * | 1995-11-01 | 1996-11-20 | 浙江保一阀门厂 | Plain plate gate valve |
| DE20308631U1 (en) * | 2003-06-03 | 2003-08-21 | Beul Aba Gmbh | Stop valve, in particular short stroke valve, comprising two additional axial grooves and conical bore |
| CN1837656A (en) * | 2006-01-18 | 2006-09-27 | 胡金木 | High-temperature high-pressure self-sealing gate valve with double flat shutter board |
| CN201262243Y (en) * | 2008-08-14 | 2009-06-24 | 闵和清 | Telescopic lower wedge hydraulic sluice valve |
| CA2675395A1 (en) * | 2008-08-19 | 2010-02-19 | Vetco Gray Inc. | System, method and apparatus for split gate valve with mechanically isolated seal surfaces |
| CN201944318U (en) * | 2011-03-11 | 2011-08-24 | 上海华尔德电站阀门有限公司 | Novel gate valve |
| CN103090034A (en) * | 2013-01-18 | 2013-05-08 | 南方阀门制造有限公司 | Wedge-caulking parallel sluice valve |
| CN103133710A (en) * | 2013-03-20 | 2013-06-05 | 潘健 | Self-checking type sluice valve |
| CN203176400U (en) * | 2013-03-28 | 2013-09-04 | 北京欧特控制阀有限公司 | Gate valve |
| CN204127352U (en) * | 2014-10-23 | 2015-01-28 | 王左一 | High temperature low moment of torsion middle high-pressure gate valve |
| CN205260891U (en) * | 2015-12-24 | 2016-05-25 | 凯喜姆阀门有限公司 | Cracking gas coke cleaning valve |
| CN205315751U (en) * | 2015-12-16 | 2016-06-15 | 温州职业技术学院 | Hard sealing gate valve of two flat boards |
| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
| CN106763849A (en) * | 2017-01-06 | 2017-05-31 | 鞍山电磁阀有限责任公司 | A kind of dual drive activity folding wedge face flashboard substep action type gate valve |
| CN208831777U (en) * | 2018-06-27 | 2019-05-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
-
2018
- 2018-06-27 CN CN201810681275.4A patent/CN108506509A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706934A (en) * | 1986-08-22 | 1987-11-17 | Mark Controls Corporation | Gate valve |
| CN2240653Y (en) * | 1995-11-01 | 1996-11-20 | 浙江保一阀门厂 | Plain plate gate valve |
| DE20308631U1 (en) * | 2003-06-03 | 2003-08-21 | Beul Aba Gmbh | Stop valve, in particular short stroke valve, comprising two additional axial grooves and conical bore |
| CN1837656A (en) * | 2006-01-18 | 2006-09-27 | 胡金木 | High-temperature high-pressure self-sealing gate valve with double flat shutter board |
| CN201262243Y (en) * | 2008-08-14 | 2009-06-24 | 闵和清 | Telescopic lower wedge hydraulic sluice valve |
| CA2675395A1 (en) * | 2008-08-19 | 2010-02-19 | Vetco Gray Inc. | System, method and apparatus for split gate valve with mechanically isolated seal surfaces |
| CN201944318U (en) * | 2011-03-11 | 2011-08-24 | 上海华尔德电站阀门有限公司 | Novel gate valve |
| CN103090034A (en) * | 2013-01-18 | 2013-05-08 | 南方阀门制造有限公司 | Wedge-caulking parallel sluice valve |
| CN103133710A (en) * | 2013-03-20 | 2013-06-05 | 潘健 | Self-checking type sluice valve |
| CN203176400U (en) * | 2013-03-28 | 2013-09-04 | 北京欧特控制阀有限公司 | Gate valve |
| CN204127352U (en) * | 2014-10-23 | 2015-01-28 | 王左一 | High temperature low moment of torsion middle high-pressure gate valve |
| CN205315751U (en) * | 2015-12-16 | 2016-06-15 | 温州职业技术学院 | Hard sealing gate valve of two flat boards |
| CN205260891U (en) * | 2015-12-24 | 2016-05-25 | 凯喜姆阀门有限公司 | Cracking gas coke cleaning valve |
| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
| CN106763849A (en) * | 2017-01-06 | 2017-05-31 | 鞍山电磁阀有限责任公司 | A kind of dual drive activity folding wedge face flashboard substep action type gate valve |
| CN208831777U (en) * | 2018-06-27 | 2019-05-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710567A (en) * | 2020-12-23 | 2021-04-27 | 中国人民解放军陆军工程大学 | Temperature-controllable ballistic impact experimental device |
| CN114593219A (en) * | 2022-01-25 | 2022-06-07 | 中国石油化工股份有限公司 | Flat gate valve |
| CN114593219B (en) * | 2022-01-25 | 2024-03-26 | 中国石油化工股份有限公司 | Flat gate valve |
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