CN207063951U - Multi-functional underground check valve - Google Patents
Multi-functional underground check valve Download PDFInfo
- Publication number
- CN207063951U CN207063951U CN201720622401.XU CN201720622401U CN207063951U CN 207063951 U CN207063951 U CN 207063951U CN 201720622401 U CN201720622401 U CN 201720622401U CN 207063951 U CN207063951 U CN 207063951U
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- Prior art keywords
- valve seat
- claw
- lock claw
- valve
- seat
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Abstract
The utility model discloses multi-functional underground check valve, including body, lock claw, valve seat, the lock claw and valve seat are arranged in chamber body, the lock claw includes the ring seat body and claw body being connected, the ring seat body lower end is connected with valve seat upper end, and the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inner body wall offers the interior oblique shoulder platform for coordinating above-mentioned outer inclined platform, and the valve seat is temporarily fixed in inner body wall by shear pin.The valve seat outer wall opens up annular groove, places snap ring in annular groove, and the inner body wall is offered for coordinating above-mentioned snap ring so as to the block machine for preventing valve body and lock claw axially moves up.The utility model, which is once gone into the well, realizes just replacing, being layered injection, anti-flushing well function for assorted column jacket.
Description
Technical field
Oil field valve is the utility model is related to, specifically multi-functional underground check valve.
Background technology
When separate layer acid treatment or profile control are constructed, need early stage to prevent well liquid from polluting stratum for liquid, the later stage needs to clean big gun
Eye is to drop low injection pressure.Conventional ball-and-seat typically realizes one-way flow control using valve ball, valve seat type structure, is beaten out of oil pipe
Pressure keeps sealing, suppresses to push up from oil jacket annular space and kicks off to realize anti-flushing well.Using existing ball-and-seat, it is impossible to meet separate layer acid treatment or
Profile control construction requirement.
Therefore, we have developed multi-functional underground check valve, realize that early stage replaces liquid using movable ball seat and pitching technology
Set with later stage tubing string, backwash requirement.
By retrieval, publication number 105443074A, publication date 2016-03-30 discloses a kind of ball-and-seat, and under blanking plug
End connection, the ball-and-seat include：It is the body of cylindrical tube shape, netted valve cover, claw lock, valve seat, O-ring seal, all
That ball and filter screen；The valve cover cover is mounted in the body upper end, and the claw lock is arranged on the body interior, and described
Claw lock is connected with the valve cover lower end, and the valve seat is arranged on the inside of the body lower end, outside the valve seat
Wall is threadedly coupled with the inner body wall, and the O-ring seal, the valve seat are provided with the outer wall of the body lower end
Lower end be threadedly coupled with the filter screen, the valve ball is located at the inside of the body, and the valve ball can be described all
You cover up and down between the valve seat；The claw lock includes the holding piece of at least three elasticity, each holding piece
Upper end be connected with the valve cover lower end, central shaft of the holding piece with the body be arranged in parallel, and all clampings
Piece is uniformly arranged around the central shaft of the body, and the lower end of each holding piece is provided with towards the prominent of the body central axle
Rise, the length of the holding piece is more than the radius of the valve ball, the minimum range of the central shaft for projecting into the body
Less than the radius of the valve ball；During work, when pressure difference is more than 0.5Mpa above and below the valve ball, the valve ball can extrude
The holding piece, and the valve ball is up and down through the space that all holding pieces surround.
By being contrasted with the application, file disclosed above in itself, or is solved in goal of the invention either in organization plan
The parts such as technical problem and effect certainly, are differed.Annexation is special between component feature and part in the application
Sign was not disclosed by file disclosed above.
By retrieval, publication number 201554425U, publication date 2010-08-18 discloses a kind of position-limiting inverted valve, and it includes
Top connection, valve body, outer sliding sleeve, inner sliding sleeve and divide claw；Valve body includes first step, the second step and that internal diameter sequentially diminishes
Three steps, first step, second step and the 3rd step are sequentially fixed together from top to bottom, the lower end outside of top connection and
It is fixed together on the inside of one step, has neck between the lower end of top connection and the upper surface of second step, at second
The outer sliding sleeve that can be moved up and down along second step is set with rank, limited location sliding sleeve, spacing sliding sleeve are fixed in the lower end of outer sliding sleeve
External diameter be less than the 3rd step internal diameter, have inner convex platform in the lower end of spacing sliding sleeve, have lower limit in the upper inner of outer sliding sleeve
Groove.
Technology is disclosed above, although the operation suppressed in pipe with reacting cycle well-flushing can be carried out continuously, in structure excessively
Complexity, and existing defects in structure setting, because lock claw will lean on the extruding of spacing sliding sleeve to inside contract, and stopper slot will set two
Place, while an inner sliding sleeve is there is provision of inside spacing sliding sleeve, inner sliding sleeve connects spacing sliding sleeve, when in use, fluid power with shear pin
Must first cutting shear pin fall inner sliding sleeve, make inner sliding sleeve depart from lock claw stop, then fluid power can just drive spacing sliding sleeve
Move down, so as to the inside extruding of lock claw, implementation steps too complex, it is excessively slow to pin the process of ball, without real-time.And this
Application utilizes simple structure, while fluid power exerts a force to ball and valve seat, it is possible to drive lock claw to move down while inside contract.So
Technology disclosed above is unable to reach the height of the application in technical scheme and effect portion.
Utility model content
The purpose of this utility model is to provide multi-functional underground check valve, once go into the well realize just the replacing of assorted column jacket,
Layering injection, anti-flushing well function.
In order to reach above-mentioned purpose, the utility model employs following technical scheme, multi-functional underground check valve, including sheet
Body, lock claw, valve seat, the lock claw and valve seat are arranged in chamber body, and the lock claw includes the ring seat body and valve being connected
Corpus unguis, the ring seat body lower end are connected with valve seat upper end, and the claw body upper end inwall opens up inner convex platform, the claw body upper end
Outer wall sets outer inclined platform, and the inner body wall offers the interior oblique shoulder platform for coordinating above-mentioned outer inclined platform, and the valve seat is temporary
When be fixed on by shear pin in inner body wall.
The valve seat outer wall opens up annular groove, places snap ring in annular groove, and the inner body wall is offered for closing
Snap ring is stated so as to the block machine for preventing valve body and lock claw axially moves up.
The snap ring is that formula snap ring is supportted outside C-shaped.
The inner body wall is further opened with the interior flat shoulder for preventing lock claw from axially moving down.
The inclined-plane that the claw body upper surface design falls for ease of valve ball, claw body lower surface is designed as preventing valve ball from taking off
The plane gone out.
The valve seat upper port is designed as the circular conical surface port for being located valve ball.
The ring seat body upper end inwall also opens up into circular conical surface.
Sealing ring is set between the ring seat body and body.
The lock claw is that screw thread type is connected with valve seat.
Compared to prior art, the utility model has the advantages that：
(1) split-type structural is used, simple and reliable, one-trip string realizes just replacing, being layered injection, anti-flushing well for separate-layer string
Function；
(2) designed using split-type radial elastic lock claw, after ball enters valve seat, constraint valve ball changed by lock claw undergauge,
Avoid washing away valve ball during anti-flushing well, lose one-way sealing ability；
(3) snap ring and the bidirectionally limited design of lock claw, limit valve seat displacement, ensure that the positive sealing of ball-and-seat.
(4) simple in construction, fluid power one arrives, and can pin ball immediately, highly reliable, real-time.Using simple structure,
While fluid power exerts a force to ball and valve seat, it is possible to drive lock claw to move down while inside contract.
Brief description of the drawings
Fig. 1 is the structural representation of multi-functional underground check valve.
In figure：Main body 1, lock claw 2, valve ball 3, sealing ring 4, valve seat 5, shear pin 6, snap ring 7.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing is only to refer to
With purposes of discussion, not it is used for being any limitation as the utility model.
Embodiment 1：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 2：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 3：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.The claw body upper surface design falls oblique for ease of valve ball
Face, claw body lower surface are designed as preventing the plane that valve ball is deviate from.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 4：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.The claw body upper surface design falls oblique for ease of valve ball
Face, claw body lower surface are designed as preventing the plane that valve ball is deviate from.The valve seat upper port is designed as the circle for being located valve ball
Conical surface port.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 5：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.The claw body upper surface design falls oblique for ease of valve ball
Face, claw body lower surface are designed as preventing the plane that valve ball is deviate from.The valve seat upper port is designed as the circle for being located valve ball
Conical surface port.The ring seat body upper end inwall also opens up into circular conical surface.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 6：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.The claw body upper surface design falls oblique for ease of valve ball
Face, claw body lower surface are designed as preventing the plane that valve ball is deviate from.The valve seat upper port is designed as the circle for being located valve ball
Conical surface port.The ring seat body upper end inwall also opens up into circular conical surface.Sealing ring is set between the ring seat body and body.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Embodiment 7：
As shown in Figure 1, multi-functional underground check valve, including body 1, lock claw 2, valve seat 3, the lock claw and valve seat are all provided with
Put in chamber body, the lock claw 2 includes the ring seat body and claw body being connected, and the ring seat body lower end connects with valve seat upper end
Connect, the claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, the inwall of body 1
The interior oblique shoulder platform for coordinating above-mentioned outer inclined platform is offered, the valve seat 3 is temporarily fixed in inner body wall by shear pin.Institute
State valve seat outer wall and open up annular groove, place snap ring 7 in annular groove, the inwall of body 1 offer for coordinate above-mentioned snap ring from
And prevent valve body and block machine that lock claw axially moves up.The inwall of body 1 is further opened with preventing lock claw from axially moving down interior flat
Shoulder.The snap ring 7 is that formula snap ring is supportted outside C-shaped.Valve seat supports formula snap ring when passing by block machine in dropping process, outside C-shaped, outwards
Release, is stuck in block machine, prevents valve seat moving up together with lock claw.The claw body upper surface design falls oblique for ease of valve ball
Face, claw body lower surface are designed as preventing the plane that valve ball is deviate from.The valve seat upper port is designed as the circle for being located valve ball
Conical surface port.The ring seat body upper end inwall also opens up into circular conical surface.Sealing ring is set between the ring seat body and body.It is described
Lock claw 2 is that screw thread type is connected with valve seat 5.
Application method：Tripping in：Ball-and-seat is installed on tubing string bottom (now without valve ball 3) and enters well；
For liquid：Original state oil jacket connects, and acid solution or profile control medicament through ball-and-seat center after oil pipe injects by crossing circulation
Road enters oil jacket annular space and is just replacing oil pipe and oil jacket annular space contaminated liquid to ground, ensures that tubing string liquid does not injure stratum；
Separate layer acid treatment controls with profile control：After just for terminating, oil pipe is put into from well head by valve ball 3, valve ball 3 sinks down into valve seat 5
Just being suppressed after upper cuts shear pin 6, and valve seat 5 limits valve seat 5 using snap ring 7 after moving down and moved up, using under the limitation valve seat 5 of lock claw 2
Move, ensure the positive assisted layered construction of sealing using valve ball and valve seat, valve seat 5, which drives lock claw 2 to move down, subtracts the opening of lock claw 2
Small, the opening of lock claw can not be departed from by being reduced to valve ball 3, and during reverse well-flushing, valve ball 3 is stopped by the lock claw 2 of undergauge, can not continue
Moved up in oil pipe and avoid being flushed away, therefore safe and reliable reverse hydraulic pressure opening can be realized.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.
Claims (9)
1. multi-functional underground check valve, including body, lock claw, valve seat, it is characterised in that the lock claw and valve seat are arranged at this
In intracoelomic cavity, the lock claw includes the ring seat body and claw body being connected, and the ring seat body lower end is connected with valve seat upper end, described
Claw body upper end inwall opens up inner convex platform, and the claw body upper end outer wall sets outer inclined platform, and the inner body wall offers use
To coordinate the interior oblique shoulder platform of above-mentioned outer inclined platform, the valve seat is temporarily fixed in inner body wall by shear pin.
2. multi-functional underground check valve according to claim 1, it is characterised in that the valve seat outer wall opens up annular groove,
Snap ring is placed in annular groove, the inner body wall is offered for coordinating above-mentioned snap ring so as to prevent on valve body and lock claw axial direction
The block machine of shifting.
3. multi-functional underground check valve according to claim 2, it is characterised in that the snap ring is that formula snap ring is supportted outside C-shaped.
4. multi-functional underground check valve according to claim 1 or 2, it is characterised in that the inner body wall is further opened with
Prevent the interior flat shoulder that lock claw axially moves down.
5. multi-functional underground check valve according to claim 1, it is characterised in that the claw body upper surface is designed as just
In the inclined-plane that valve ball falls, claw body lower surface is designed as preventing the plane that valve ball is deviate from.
6. multi-functional underground check valve according to claim 1, it is characterised in that the valve seat upper port be designed as
It is located the circular conical surface port of valve ball.
7. multi-functional underground check valve according to claim 6, it is characterised in that the ring seat body upper end inwall also opens up
Into circular conical surface.
8. multi-functional underground check valve according to claim 1, it is characterised in that set between the ring seat body and body
Sealing ring.
9. multi-functional underground check valve according to claim 1, it is characterised in that the lock claw connects with valve seat for screw thread type
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622401.XU CN207063951U (en) | 2017-05-31 | 2017-05-31 | Multi-functional underground check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622401.XU CN207063951U (en) | 2017-05-31 | 2017-05-31 | Multi-functional underground check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207063951U true CN207063951U (en) | 2018-03-02 |
Family
ID=61505232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720622401.XU Expired - Fee Related CN207063951U (en) | 2017-05-31 | 2017-05-31 | Multi-functional underground check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207063951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320227A (en) * | 2021-11-15 | 2022-04-12 | 中海油能源发展股份有限公司 | Full latus rectum pressure transmission ball seat after can cuting |
-
2017
- 2017-05-31 CN CN201720622401.XU patent/CN207063951U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320227A (en) * | 2021-11-15 | 2022-04-12 | 中海油能源发展股份有限公司 | Full latus rectum pressure transmission ball seat after can cuting |
| CN114320227B (en) * | 2021-11-15 | 2023-07-28 | 中海油能源发展股份有限公司 | Full latus rectum pressure ball seat that passes after can shearing |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180302 Termination date: 20210531 |