CN206376775U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN206376775U CN206376775U CN201621418636.9U CN201621418636U CN206376775U CN 206376775 U CN206376775 U CN 206376775U CN 201621418636 U CN201621418636 U CN 201621418636U CN 206376775 U CN206376775 U CN 206376775U
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- Prior art keywords
- seat
- valve
- valve element
- ball
- hole
- 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.)
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- 230000013011 mating Effects 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 56
- 239000012530 fluid Substances 0.000 description 38
- 238000007789 sealing Methods 0.000 description 10
- 239000012535 impurity Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001802 infusion Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 206010016825 Flushing Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
- Check Valves (AREA)
Abstract
The utility model provides a check valve, include: the valve comprises a shell, a valve core, a limiting device and a valve seat; a first cavity is arranged in the shell; the valve core is arranged in the first cavity; the valve core is internally provided with a second cavity, the valve core is provided with a top surface and a bottom surface which are oppositely arranged, the top surface is provided with a first through hole, and the bottom surface is of a hollow structure; a top plug and an elastic device are arranged in the second cavity, one end of the elastic device is connected with the bottom surface, the other end of the elastic device is connected with the top plug, and the top plug is matched with the first through hole to seal the top surface; the valve seat is circumferentially arranged on the inner wall of the shell, a second through hole is formed in the valve seat, and the second through hole is matched with the valve core to seal the valve seat; the limiting device is arranged on the inner wall of the shell and limits the movement of the valve core in an area formed by the valve seat and the limiting device. The check valve can not only be used for back flushing but also be used for forward flushing, so that various well flushing modes are realized, and the well flushing success rate is improved.
Description
Technical field
The utility model belongs to oil field production technical field, more particularly to a kind of ball-and-seat.
Background technology
Submersible electric pump is widely used in oilfield exploitation as important mechanical oil recovery equipment, and ball-and-seat is submersible electric pump
Production pipeline in a kind of important building block.
At present, the valve element of ball-and-seat is solid construction, only allows fluid to be redirected back into housing, positive then can not pass through, and is made
Submersible electric pump termination of pumping when, it is to avoid the reverse flow of fluids in oil pipe, so as to prevent motor from reversing, it is ensured that oil security is produced.
But when the suction inlet of submersible electric pump is blocked by impurity, it is necessary to handled by the method for well-flushing, and it is existing
Ball-and-seat only allows fluid to be redirected back into, positive then can not pass through, i.e., can only anti-flushing well, it is impossible to positive well-flushing, once and latent oil is electric
Pump Suction Nozzle is blocked by impurity, oil pipe and ball-and-seat etc. can only be all taken out from shaft bottom and be cleaned, it is necessary to consume substantial amounts of
Human and material resources.
Utility model content
The utility model provides a kind of ball-and-seat, with solve existing ball-and-seat can not just well-flushing technical problem.
The ball-and-seat that the utility model is provided, including：Housing, valve element, stopping means and valve seat；
The enclosure interior is provided with the first cavity；The valve element is arranged in first cavity；
The valve core inside is provided with the second cavity, and the valve element has the top surface being oppositely arranged and bottom surface, the top surface
First through hole is provided with, the bottom surface is engraved structure；Second inside cavity is provided with top plug and elastic device, the bullet
Property device one end be connected with the bottom surface, the other end with it is described top plug be connected, it is described top plug with the first through hole coordinate with by
The top surface sealing；
The valve seat is circumferentially provided on the inwall of the housing, and the second through hole, described second are provided with the valve seat
Through hole and valve seat described in the valve element fitted seal；
The stopping means is arranged on the inwall of the housing, and the stopping means limits the valve element in the valve seat
With the movement in the region of stopping means formation.
Further, the stopping means includes at least one spacer pin, and at least one described spacer pin is uniformly arranged on
On the inwall of the housing.
Further, the cross-sectional area of the first through hole reduces to the direction away from the valve element bottom surface.
Further, the mating surface that the first through hole is filled in the top is circular conical surface.
Further, direction of the outer radial of the valve element away from the valve element top surface reduces.
Further, the interior direction radially away from the stopping means of the valve seat reduces；The valve seat is to described
The side of valve element is engaged with the valve element in face of the side of the valve seat, and, the side being engaged is circular conical surface.
Further, the maximum outside diameter of the valve element is more than the minimum diameter of the valve seat.
Further, the cross-sectional area of the elastic device is less than the cross-sectional area of the valve element bottom surface.
The ball-and-seat that the utility model is provided, including：Housing, valve element, stopping means and valve seat；The enclosure interior is provided with
First cavity；The valve element is arranged in first cavity；The valve core inside is provided with the second cavity, and the valve element, which has, to be oppositely arranged
Top surface and bottom surface, the top surface is provided with first through hole, and the bottom surface is engraved structure；Second inside cavity be provided with top plug and
Elastic device, the elastic device one end is connected with the bottom surface, and the other end is connected with top plug, and top plug coordinates with the first through hole
So that the top surface to be sealed；The valve seat is circumferentially provided on the inwall of the housing, and the second through hole is provided with the valve seat, this second lead to
Hole and the valve element fitted seal valve seat；The stopping means is arranged on the inwall of the housing, and the stopping means limits the valve element
Movement in the region of the valve seat and stopping means formation.The ball-and-seat both can with anti-flushing well, again can just well-flushing, realize
A variety of well-flushing modes, improve well-flushing success rate.
Brief description of the drawings
A kind of profile for ball-and-seat that Fig. 1 provides for the utility model；
Fig. 2 is the upward view of valve element；
Fig. 3 is the top view of stopping means；
Schematic diagram during the ball-and-seat off working state that Fig. 4 provides for the utility model；
Schematic diagram during positive for ball-and-seat that the utility model the is provided well-flushings of Fig. 5.
Description of reference numerals：
1- housings；
2- stopping means；
3- valve elements；
4- valve seats；
5- elastic devices；
6- tops plug；
7- top surfaces；
8- bottom surfaces；
The cavitys of 9- first；
The cavitys of 10- second；
11- first through hole；
The through holes of 12- second.
Embodiment
The utility model provides a kind of ball-and-seat, a kind of profile for ball-and-seat that Fig. 1 provides for the utility model.As schemed
Ball-and-seat shown in 1, including：Housing 1, valve element 3, stopping means 2 and valve seat 4.Housing 1 is internally provided with the first cavity 9；Valve element
3 are arranged in the first cavity 9.Valve element 3 is internally provided with the second cavity 10, and valve element 3 has the top surface 7 being oppositely arranged and bottom surface 8,
Top surface 7 is provided with first through hole 11, and bottom surface 8 is engraved structure.Second cavity 10 is internally provided with top plug 6 and elastic device 5, bullet
Property the one end of device 5 be connected with bottom surface 8, the other end 6 be connected with top plug, and top fills in 6 and coordinates to seal top surface 7 with first through hole 11.
Valve seat 4 is circumferentially provided on the inwall of housing 1, and the second through hole 12 is provided with valve seat 4, and the second through hole 12 coordinates close with valve element 3
Seal valve seat 4；Stopping means 2 is arranged on the inwall of housing 1, and the limitation valve element 3 of stopping means 2 is formed in valve seat 4 and stopping means 2
Region in movement.
Specifically, the second through hole 12 and the fitted seal valve seat 4 of valve element 3.When ball-and-seat is in off working state, valve element 3 exists
Self gravitation and differential pressure action fall on valve seat 4, are fitted close with the second through hole 12, the formation of valve seat 4 are sealed, so as to avoid
The refluence of fluid in first cavity 9.
Valve seat 4 and stopping means 2 are fixedly disposed on the inwall of housing 1, in the inner seat 4 of the first cavity 9 and spacing
The formation predeterminable area of device 2, valve element 3 is the predeterminable area being located in the first cavity 9, and can be moved in the predeterminable area
It is dynamic.When ball-and-seat is in running order or during anti-flushing well, fluid opens the valve element 3 coordinated with valve seat 4 top, and causes valve element to exist
Move up and down or rotate in the predeterminable area, so that ball-and-seat is opened, fluid passes through through the space between valve element 3 and valve seat 4
Ball-and-seat.Stopping means 2 limits the axial movement of valve element 3, it is to avoid valve element 3 is taken out of by fluid during anti-flushing well.
Valve element 3 is provided with bottom surface 8, to support elastic device 5.
Fig. 2 is the upward view of valve element, as shown in Fig. 2 bottom surface 8 is engraved structure.
Specifically, bottom surface 8 is engraved structure, the engraved structure for example can be cross engraved structure so that during positive well-flushing,
Flushing fluid can discharge valve element 3 by the space of bottom surface 8.
Valve element 3 is internally provided with the second cavity 10 so that valve element 3 is hollow structure；And top surface 7 is provided with first through hole
11, bottom surface 8 is engraved structure.During positive well-flushing, flushing fluid can forward direction enter ball-and-seat, enter the second chamber by first through hole 11
Body 10, and being discharged by bottom surface 8, solves prior art valve element for solid construction, it is impossible to the problem of positive well-flushing, by positive well-flushing,
The impurity for being attached to submersible electric pump suction inlet can be removed, well-flushing efficiency is improved, increases well-flushing success rate.
Second cavity 10 is internally provided with top plug 6 and elastic device 5, and the one end of elastic device 5 is connected with top plug 6, to support
Top plug 6 so that top plug 6 coordinates to seal top surface 7 with first through hole 11.Specifically, when ball-and-seat is in off working state,
The support force that 5 pairs of top plugs 6 of elastic device are provided is more than pressure of the fluid to top plug 6 in the first cavity 9 so that top plug 6 and first
Through hole 11 coordinates so that top surface 7 to be sealed, so as to avoid the refluence of fluid in the first cavity 9.When needing positive well-flushing, by pump truck
Into oil pipe, infusion flushing fluid pressurizes so that fluid is more than 5 pairs of top plugs 6 of elastic device to the pressure of top plug 6 in the first cavity 9
Support force, and then cause elastic device 5 by compression, meanwhile, top plug 6 is also moved down therewith, and first be arranged on top surface 7 is led to
Hole 11 is opened so that fluid discharges ball-and-seat by the second cavity 10 by bottom surface 8, so as to reach the purpose of positive well-flushing.
The ball-and-seat that the utility model is provided, when ball-and-seat is normally used or during anti-flushing well, as shown in figure 1, underground is flowed
Body enters from ball-and-seat bottom, and the valve element 3 coordinated with valve seat 4 top is opened, so that ball-and-seat is opened, valve of the fluid through ball-and-seat
Space between core 3 and valve seat 4 passes through ball-and-seat.
When submersible electric pump termination of pumping, the pressure that downhole fluid applies to bottom surface 8 reduces, in the presence of pressure difference, valve element 3 times
Drop down onto on valve seat 4, sealing is formed, to prevent the reverse flow of fluids in oil pipe.
When need positive well-flushing when, from pump truck into oil pipe infusion flushing fluid pressurize, when oil pipe fluid pressure increase to it is pre-
If during value, being moved down the top plug 6 controlled by elastic device 5, the first through hole 11 being arranged on top surface 7 is opened so that stream
Body discharges ball-and-seat by the second cavity 10 by bottom surface 8, so as to reach the purpose of positive well-flushing.By positive well-flushing, attachment removal can be removed
In the impurity of submersible electric pump suction inlet, and then well-flushing efficiency is improved, increase well-flushing success rate.
The ball-and-seat that the utility model is provided, including：Housing 1, valve element 3, stopping means 2 and valve seat 4；Set inside housing 1
It is equipped with the first cavity 9；Valve element 3 is arranged in the first cavity 9；Valve element 3 is internally provided with the second cavity 10, and valve element 3 has relative
The top surface 7 of setting and bottom surface 8, top surface 7 are provided with first through hole 11, and bottom surface 8 is engraved structure；Second cavity 10 is internally provided with
Top plug 6 and elastic device 5, one end of elastic device 5 are connected with bottom surface 8, and the other end is connected with top plug 6, top plug 6 and first through hole 11
Coordinate to seal top surface 7；Valve seat 4 is circumferentially provided on the inwall of housing 1, and the second through hole 12 is provided with valve seat 4, and second leads to
Hole 12 and the fitted seal valve seat 4 of valve element 3；Stopping means 2 is arranged on the inwall of housing 1, and stopping means 2 limits valve element 3 in valve
Movement in the region of seat 4 and the formation of stopping means 2.The ball-and-seat both can with anti-flushing well, again can just well-flushing, realize a variety of
Well-flushing mode, improves well-flushing success rate.
Fig. 3 is the top view of stopping means.As shown in figure 3, stopping means 2 includes at least one spacer pin, at least one
Spacer pin is uniformly arranged on the inwall of housing 1.
Specifically, the spacer pin for example can be four；Stopping means 2 can be connected through a screw thread with the inwall of housing 1.
Multiple spacer pins are uniformly arranged on the inwall of housing so that the spacer pin stress evenly, adds the intensity of stopping means,
And then improve the service life of ball-and-seat.
Further, the cross-sectional area of first through hole 11 reduces to the direction away from the bottom surface 8 of valve element 3.First through hole 11 with
The mating surface of top plug 6 is circular conical surface.
It should be noted that shown in Fig. 1, the concrete form of first through hole 11 is only a kind of example, and the application is not right
This limitation.That is, in actual applications, the cross-sectional area of the first through hole 11 also can be to the direction away from the bottom surface 8 of valve element 3
Do not change, or reduce in a stepped manner.First through hole 11 and the mating surface of top plug 6 are alternatively the not rounded conical surface such as face of cylinder.
First through hole 11 and the mating surface of top plug 6 are disposed as circular conical surface, may be such that first through hole 11 coordinates with top plug 6
It is more preferable to the sealing effectiveness of top surface 7.So that when ball-and-seat is in running order or during anti-flushing well, top plug 6 can be sealed effectively
Top surface 7, and the lifting surface area for causing first through hole 11 is evenly, improves the service life of valve element 3.
Further, direction of the outer radial of valve element 3 away from the top surface 7 of valve element 3 reduces；Valve seat 4 it is interior radially away from spacing
The direction of device 2 reduces.Valve seat 4 is engaged in face of the side of valve element 3 with valve element 3 in face of the side of valve seat 4, and, it is engaged
Side is circular conical surface.
It should be noted that shown in Fig. 1, the concrete form of valve seat 4 is only a kind of example, and the application is not limited this
System.That is, in actual applications, the valve seat 4 can also be provided with the circular plate structure of the second through hole 12；Valve seat 4 with
The mating surface of valve element 3 is alternatively the not rounded conical surface such as face of cylinder.
Specifically, the mating surface of valve seat 4 and valve element 3 is circular conical surface, the mating surface is circular conical surface, relative to other shapes
The sealing surface such as face of cylinder, the mating surface contact area is bigger so that valve seat 4 coordinates the sealing effectiveness to valve seat 4 with valve element 3
More preferably.In the case of valve element 3 and valve seat 4 are sealed, valve seat 4 faces the side phase of valve seat 4 in face of the side of valve element 3 with valve element 3
Coordinate, may be such that valve seat 4 is more preferable to the support strength of valve element 3 in the case, improves the service life of ball-and-seat.
Further, the maximum outside diameter of valve element 3 is more than the minimum diameter of valve seat 4.
Specifically, the maximum outside diameter of valve element 3 is more than the minimum diameter of valve seat 4, the sealing effectiveness of valve element 3 is enhanced, simultaneously
Valve element 3 during positive well-flushing is avoided to go out the second through hole 12 by fluid.
The cross-sectional area of elastic device 5 is less than the cross-sectional area of bottom surface 8.
Specifically, the cross-sectional area of elastic device 5 is less than the cross-sectional area of bottom surface 8, it is to avoid the completely plugged bottom of elastic device 5
Face 8.
The utility model provide ball-and-seat, solve prior art undercurrent electric pump produce block etc. failure when can not backwash
The problem of well, when need positive well-flushing when, from pump truck into oil pipe infusion flushing fluid pressurize, when oil pipe fluid pressure increase to it is pre-
If during value, being moved down the top plug 6 controlled by elastic device 5, the first through hole 11 being arranged on top surface 7 is opened so that stream
Body discharges ball-and-seat by the second cavity 10 by bottom surface 8, so as to reach the purpose of positive well-flushing.
The sealing function when ball-and-seat of the application, non-job state also with prior art ball-and-seat, specifically, when latent
During oily electric pump termination of pumping, the pressure that downhole fluid applies to bottom surface 8 reduces, and in the presence of pressure difference, valve element 3 is fallen after rise to valve seat 4,
Sealing is formed, to prevent the reverse flow of fluids in oil pipe.
Meanwhile, the ball-and-seat of the application, the also function with prior art ball-and-seat anti-flushing well, specifically, working as ball-and-seat
When normally using or need anti-flushing well, downhole fluid enters from ball-and-seat bottom, and downhole fluid enters from ball-and-seat bottom, will
The top of valve element 3 coordinated with valve seat 4 is opened, so that ball-and-seat is opened, the space between valve element 3 and valve seat 4 of the fluid through ball-and-seat
Pass through ball-and-seat.
Illustrated as follows by instantiation：
When ball-and-seat is in off working state, valve element 3 and valve seat 4 are in mated condition, normally use when ball-and-seat or
When needing anti-flushing well, as shown in figure 1, downhole fluid enters from ball-and-seat bottom, because top surface 7 is in sealing state, underground stream
Body can not pass through first through hole 11 so that valve element 3 lifts off a seat 4 in the presence of Fluid pressure, so that ball-and-seat is opened, stream
Space between valve element 3 and valve seat 4 of the body through ball-and-seat is by ball-and-seat, under fluid matasomatism, and valve element 3 is in housing 1, spacing dress
Put in 2 and the predeterminable area that is collectively forming of valve seat 4 rotation or move axially, stopping means 2 then avoids valve element 3 by fluid band
Go out.
Schematic diagram during the ball-and-seat off working state that Fig. 4 provides for the utility model.As shown in figure 4, working as submersible electric pump
During termination of pumping, the pressure that downhole fluid applies to bottom surface 8 reduces, in the presence of pressure difference and the self gravitation of valve element 2, valve element 3 times
Drop down onto on valve seat 4；Now because 6 support forces provided are filled in more than fluid in the first cavity 9 to top plug 6 in 5 pairs of tops of elastic device
Pressure, in the presence of elastic device 5, top plug 6 coordinates to seal top surface 7 with first through hole 11.And due to valve element 3 and valve seat
4 mating surface is circular conical surface so that within a preset range, the more big then sealing effectiveness of pressure difference is better, it is to avoid the fluid in oil pipe
Flow backwards, so as to prevent motor from reversing, it is ensured that oil security is produced.
Schematic diagram during positive for ball-and-seat that the utility model the is provided well-flushings of Fig. 5, as shown in figure 5, when needing positive well-flushing,
From pump truck, into oil pipe, infusion flushing fluid pressurizes so that valve element 3 falls on valve seat 4, and continues pressurization, when oil pipe fluid pressure
When increasing to preset value so that the fluid in the first cavity is more than the support force of 5 pairs of top plugs 6 of elastic device to the pressure of top plug 6,
And then cause elastic device 5 by compression, meanwhile, top plug 6 is also moved down therewith, is arranged at the quilt of first through hole 11 on top surface 7
Open so that fluid enters the second cavity 10 by first through hole 11, and is discharged by bottom surface 8, and solving prior art valve element is
Solid construction, it is impossible to the problem of positive well-flushing, and by positive well-flushing, the impurity for being attached to submersible electric pump suction inlet can be removed, and then
Well-flushing efficiency is improved, increases well-flushing success rate.
The ball-and-seat that the utility model is provided both can with anti-flushing well, again can just well-flushing, realize a variety of well-flushing modes, carry
High well-flushing success rate.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (8)
1. a kind of ball-and-seat, it is characterised in that including：Housing, valve element, stopping means and valve seat；
The enclosure interior is provided with the first cavity；The valve element is arranged in first cavity；
The valve core inside is provided with the second cavity, and the valve element has the top surface being oppositely arranged and bottom surface, and the top surface is set
There is first through hole, the bottom surface is engraved structure；Second inside cavity is provided with top plug and elastic device, the elasticity dress
Put one end to be connected with the bottom surface, the other end is filled in the top to be connected, the plug that pushes up coordinates with by described in the first through hole
Top surface is sealed；
The valve seat is circumferentially provided on the inwall of the housing, and the second through hole, second through hole are provided with the valve seat
With valve seat described in the valve element fitted seal；
The stopping means is arranged on the inwall of the housing, and the stopping means limits the valve element in the valve seat and institute
State the movement in the region of stopping means formation.
2. ball-and-seat according to claim 1, it is characterised in that the stopping means includes at least one spacer pin, institute
At least one spacer pin is stated to be uniformly arranged on the inwall of the housing.
3. ball-and-seat according to claim 1, it is characterised in that the cross-sectional area of the first through hole is to away from the valve
The direction of core bottom surface reduces.
4. ball-and-seat according to claim 1, it is characterised in that the mating surface that the first through hole is filled in the top is circle
The conical surface.
5. ball-and-seat according to claim 1, it is characterised in that the outer radial of the valve element is away from the valve element top surface
Direction reduces.
6. ball-and-seat according to claim 5, it is characterised in that the valve seat it is interior radially away from the stopping means
Direction reduces；The valve seat is engaged to the side of the valve element with the valve element in face of the side of the valve seat, and, it is described
The side being engaged is circular conical surface.
7. the ball-and-seat according to any one of claim 1-6, it is characterised in that the maximum outside diameter of the valve element is more than institute
State the minimum diameter of valve seat.
8. the ball-and-seat according to any one of claim 1-6, it is characterised in that the cross-sectional area of the elastic device is small
Cross-sectional area in the valve element bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418636.9U CN206376775U (en) | 2016-12-22 | 2016-12-22 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418636.9U CN206376775U (en) | 2016-12-22 | 2016-12-22 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206376775U true CN206376775U (en) | 2017-08-04 |
Family
ID=59407778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621418636.9U Active CN206376775U (en) | 2016-12-22 | 2016-12-22 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206376775U (en) |
-
2016
- 2016-12-22 CN CN201621418636.9U patent/CN206376775U/en active Active
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