CN210739469U - Novel backflow stopping device - Google Patents

Novel backflow stopping device Download PDF

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Publication number
CN210739469U
CN210739469U CN201920261556.4U CN201920261556U CN210739469U CN 210739469 U CN210739469 U CN 210739469U CN 201920261556 U CN201920261556 U CN 201920261556U CN 210739469 U CN210739469 U CN 210739469U
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China
Prior art keywords
valve
check valve
ball
valve body
port
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Active
Application number
CN201920261556.4U
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Chinese (zh)
Inventor
李峰
刘京煊
付玮
刘青峰
袁胜利
隋铁柱
武照龙
王其友
王吉言
段建明
宋文鹏
王卓然
袁一平
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Xinjiang Xinchun Oil Development Co Ltd Sinopec
China Petroleum and Chemical Corp
Original Assignee
Xinjiang Xinchun Oil Development Co Ltd Sinopec
China Petroleum and Chemical Corp
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Application filed by Xinjiang Xinchun Oil Development Co Ltd Sinopec, China Petroleum and Chemical Corp filed Critical Xinjiang Xinchun Oil Development Co Ltd Sinopec
Priority to CN201920261556.4U priority Critical patent/CN210739469U/en
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Publication of CN210739469U publication Critical patent/CN210739469U/en
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Abstract

The utility model discloses a novel backflow prevention device, including check valve body, valve seat, valve ball, port installation valve seat under the check valve body, the valve ball sets up inside the check valve body, in the check valve inner chamber promptly, still includes porous baffle, the porous baffle of port installation on the check valve body, the valve ball external diameter is less than check valve body internal diameter, and the valve ball external diameter is greater than the port internal diameter on the center channel of valve seat. And an inspection opening is formed in the side wall of the check valve pipe body, and the caliber of the inspection opening is larger than the outer diameter of the valve ball. The inspection opening is provided with an inspection opening transverse pipe, and an outer port of the inspection opening transverse pipe is provided with a plug. The utility model discloses avoid the oil well to take place unusual backward flow.

Description

Novel backflow stopping device
Technical Field
The utility model relates to a single current valve, specifically speaking are novel end backward flow device.
Background
The western oil area of the victory oil field adopts an injection-production integrated process, each well platform valve group is provided with a high-pressure switching device and a low-pressure switching device, and the high-pressure process is opened and the low-pressure process is closed when the oil well injects steam; and opening the low-pressure flow and closing the high-pressure flow during the production of the oil well. The high pressure flow is one-way flow, but the low pressure flow is two-way flow due to the influence of the back pressure and poor pump condition. When an oil well is abnormal and the pump condition is poor, the low-pressure flow often flows reversely, and if the low-pressure flow cannot be found in time, the yield is abnormally reduced.
Application No.: 201410437399.X, published 2018-04-03 discloses a check valve connected to a lower end of an obturator, the check valve comprising: the cylinder barrel-shaped body, netted valve cover, claw formula hasp, valve seat, sealing rubber ring, valve ball and filter screen. The check valve composed of the body, the valve cover, the claw-type lock catch, the valve seat, the sealing rubber ring, the valve ball and the filter screen is arranged at the bottom of the blanking plug to replace the filter screen at the bottom of the original blanking plug, when water is normally injected, the valve ball is pressed to the position below the valve cover by the pressure of a high-pressure water column, the water flows to the inner cavity of the body of the blanking plug through the filter screen, the valve seat and the valve cover, and then the oil layer is injected from the blanking plug, so that the normal water injection is realized; when water injection is stopped, the upper pressure and the lower pressure of the oil reservoir pressure-relief valve are high, the valve ball is forced to pass through the claw-type lock catch and fall onto the valve seat, the valve seat is blocked and cannot be communicated, liquid in the oil reservoir cannot be regurgitated in, and therefore the regurgitation phenomenon of the oil reservoir is avoided, and the water injection operation of other oil reservoirs and the damage of the regurgitated liquid to an instrument are avoided.
Application No.: 201520395292.3, published 2015-09-30 discloses a check valve comprising: a first contact having a first through hole therein; the second joint is provided with a second through hole, the first joint and the second joint are hermetically connected, and the first through hole is communicated with the second through hole; the sealing body is positioned in the second through hole, and a limiting bulge is arranged on the peripheral surface of the sealing body and/or the inner wall surface of the second through hole to enable the sealing body to be coaxial with the second through hole; and one end of the elastic piece is abutted against the first joint, and the other end of the elastic piece is abutted against the sealing body, so that the outer wall surface of the sealing body is in closed fit with the inner wall surface of the second through hole. The utility model discloses can use oil development technical field, when the single current valve is used for the horizontal well, its seal can remain throughout and be in coaxial state with second through-hole, elastic component under spacing bellied righting effect, makes the spring atress even, and the seal can keep good sealed with the base under the effect of the even elasticity of elastic component, improves the life of single current valve.
Application No.: 201320497111.9, published as 2014-03-12 discloses a safety valve unloading backstop, which comprises a safety valve, an opening rod, a single-flow valve seat, a sealing ball, a spiral spring and a short section, and is characterized in that the opening rod is arranged at the center in a safety valve joint through a support, the safety valve joint is in threaded connection with the short section, the single-flow valve seat is arranged at the inner periphery of the short section, the sealing ball is arranged on a conical port of the single-flow valve seat, the spiral spring is arranged at the lower part of the sealing ball, and the spiral spring is seated on a spring seat arranged in the short section; the short joint is connected with a joint of the pressure container. The utility model has the advantages of overhaul or change relief valve, pressure vessel does not release pressure, need not lead the flow and seal tightly, overhauls relief valve convenient and fast labour saving and time saving.
Application No.: 201720668998.1, published 2018-02-23, discloses a buffer impact check valve, which is used in pipelines for conveying liquid media such as oil and water, and is a device for preventing the liquid media in the pipelines from flowing backwards and flowing back. The check valve comprises a valve body, wherein a valve seat, a valve ball and a baffle are arranged in the valve body, a buffer cavity is arranged at the lower part of the valve body, an inlet is communicated with the buffer cavity, the valve seat, the valve ball and the baffle are arranged in the valve body between the buffer cavity and the outlet, and a plug is arranged at the upper part of the valve body. The utility model provides a valve ball, baffle and disk seat all can be dismantled, and it is very convenient to wash, overhaul, can guarantee the effective seat seal of valve ball, has avoided the valve ball because of corroding the scale deposit seat seal not tight, by defects such as card inefficacy, has reduced cost of maintenance, has prolonged maintenance cycle, has improved production efficiency.
Application No.: 201720729864.6, published 2018-05-08 discloses a valve core for a reverse check valve and the reverse check valve, belonging to the technical field of oil well exploitation equipment. The utility model discloses a valve core for reverse single flow valve, including the bridge type connects, is provided with the liquid flow channel that extends along the upper and lower direction and mixes the passageway on the bridge type connects or between bridge type connects and the corresponding valve body, and the liquid flow channel lower extreme has the opening, mixes the passageway upper end and has the opening; the bridge type joint is inside to have the valve pocket, is provided with the ball valve in the valve pocket, and the ball valve includes the disk seat and sets up above the disk seat and with disk seat complex valve ball, and the ball valve separates the inside valve pocket of bridge type joint for epicoele and cavity of resorption, liquid flow channel's upper end with the epicoele intercommunication, mix the passageway lower extreme with cavity of resorption intercommunication. The utility model discloses a reverse check valve can eliminate the spring of the check valve among the prior art and open, close the problem that the back became invalid many times.
Application No.: 201720464271.1, published 2018-01-02 discloses a check valve, which belongs to the field of oilfield machinery. The check valve includes: a cylindrical valve body; the valve seat, the valve support and the sieve plate are sequentially arranged in the inner cavity of the valve body from top to bottom. The valve seat is provided with a valve hole communicated with the inner cavity of the valve body; the valve is used for plugging the valve hole; the valve holder is used for holding the valve; the sieve plate is provided with a plurality of overflowing holes. Further, the valve seat is detachably arranged in the valve body. The check valve further comprises: the upper end and the lower end of the spring are respectively connected with the valve support and the sieve plate. The valve seat is detachably arranged in the valve body, so that the damaged valve seat can be conveniently detached and replaced, the replacement of the whole check valve is avoided, and the operation cost is reduced. Through setting up the spring, can alleviate the impact force that receives when the valve holds in the palm the downstream, set up the overflow area that the spring has increased liquid moreover, be convenient for improve the operating efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel end backward flow device avoids the oil well to take place unusual backward flow.
In order to achieve the above object, the utility model discloses a following technical scheme, a novel backflow preventer, including check valve body, valve seat, valve ball, port installation valve seat under the check valve body, the valve ball sets up inside the check valve body, promptly in the check valve inner chamber, still includes porous baffle, the porous baffle of port installation on the check valve body, check-up mouth is seted up to check valve body lateral wall, and the bore of check-up mouth is greater than the valve ball external diameter.
The outer diameter of the valve ball is smaller than the inner diameter of the check valve body, and the outer diameter of the valve ball is larger than the inner diameter of the upper port of the central channel of the valve seat.
The inspection opening is provided with an inspection opening transverse pipe, and an outer port of the inspection opening transverse pipe is provided with a plug.
The porous baffle is a four-hole baffle.
The four-hole baffle is provided with four holes, wherein the center of the baffle is provided with a hole, and the other three holes form an annular matrix by the central hole.
Compared with the prior art, the utility model following beneficial effect has:
the device is installed on a single-well low-pressure flow riser, and when liquid volume reflows in a single well, the valve ball descends by means of the gravity of the valve ball and the driving force of reflowing liquid, is seated on the valve seat, and seals the space of the ball seat, so that the liquid volume reflowing sealing effect is achieved. When the oil well normally discharges liquid, liquid quantity enters from the ball seat end of the check valve, the valve ball is jacked open by the liquid quantity, the liquid quantity enters the check valve, and the liquid quantity enters the gathering and transportation flow from the four-hole baffle at the top end of the check valve. The valve ball and the valve seat are the same as those in the pump barrel, and have high temperature resistance. The device is arranged in a low-pressure flow, and the erosion of the high-pressure flow to the valve ball seat is avoided. The side end of the device is provided with an inspection opening, so that the valve ball can be taken out at any time for inspection and replacement. The inspection port of the device is sealed by a plug, the inlet and outlet valves of the check valve are closed, and the plug can be removed to inspect the sealing condition of the steel ball. The device makes up the current situation that a western oil area of the victory oil field has no check valve, and the low-pressure flow is convenient to install, safe and reliable; the movable ball type device is suitable for the conditions of high crude oil viscosity and sand content of incoming liquid, and can effectively prevent the oil well from refluxing and remove the self-locking effect.
Drawings
Fig. 1 is a schematic structural view of the novel backflow preventing device of the present invention.
In the figure: the inspection opening comprises a transverse pipe 1, a four-hole baffle 2, a check valve pipe body 3, a check valve inner cavity 4, a valve seat 5, a valve ball 6 and a plug 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a novel prevent backward flow device, includes check valve body 3, valve seat 5, valve ball 6, port installation valve seat under the check valve body, the valve ball sets up inside the check valve body, in check valve inner chamber 4 promptly, still includes porous baffle 2, the porous baffle of port installation on the check valve body, the valve ball external diameter is less than check valve body internal diameter, and the valve ball external diameter is greater than port internal diameter on the central channel of valve seat.
The side wall of the check valve body 3 is provided with an inspection opening, and the caliber of the inspection opening is larger than the outer diameter of the valve ball.
The inspection opening is provided with an inspection opening transverse tube 1, and an outer port of the inspection opening transverse tube is provided with a plug 7.
The porous baffle is a four-hole baffle 2.
The four-hole baffle is provided with four holes, wherein the center of the baffle is provided with a hole, and the other three holes form an annular matrix by the central hole. The hole in the center is favorable for stabilizing the valve ball, the valve ball is sucked and clamped at the hole in the center, and then the liquid flows out stably from other holes.
The device is welded to the low-pressure flow, the inlet and the outlet are provided, a valve is additionally arranged, the subsequent disassembly and maintenance are convenient, the four-hole baffle is the outlet of the device, and the valve seat is the inlet of the device. When the oil well is normally produced, liquid coming from the bottom of the well jacks up the valve ball, and the pipeline flows smoothly; if the liquid coming from the bottom of the well is large, the four-hole baffle plate at the outlet end blocks the valve ball, and the coming liquid continues to flow out from the three surrounding pore passages. When the oil well has backflow, the valve ball can be quickly seated on the valve ball seat, the flow is closed, and liquid backflow is blocked.
The device is installed on a single-well low-pressure flow riser, and when liquid volume reflows in a single well, the valve ball descends by means of the gravity of the valve ball and the driving force of reflowing liquid, is seated on the valve seat, and seals the space of the ball seat, so that the liquid volume reflowing sealing effect is achieved. When the oil well normally discharges liquid, liquid quantity enters from the ball seat end of the check valve, the valve ball is jacked open by the liquid quantity, the liquid quantity enters the check valve, and the liquid quantity enters the gathering and transportation flow from the four-hole baffle at the top end of the check valve. The valve ball and the valve seat are the same as those in the pump barrel, and have high temperature resistance. The device is arranged in a low-pressure flow, and the erosion of the high-pressure flow to the valve ball seat is avoided. The side end of the device is provided with an inspection opening, so that the valve ball can be taken out at any time for inspection and replacement. The inspection port of the device is sealed by a plug, the inlet and outlet valves of the check valve are closed, and the plug can be removed to inspect the sealing condition of the steel ball. The device makes up the current situation that a western oil area of the victory oil field has no check valve, and the low-pressure flow is convenient to install, safe and reliable; the movable ball type device is suitable for the conditions of high crude oil viscosity and sand content of incoming liquid, and can effectively prevent the oil well from refluxing and remove the self-locking effect.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a novel backflow prevention device, includes check valve body, valve seat, valve ball, port installation valve seat under the check valve body, the valve ball sets up inside the check valve body, in the check valve inner chamber promptly, its characterized in that still includes porous baffle, the porous baffle of port installation on the check valve body, check port is seted up to check valve body lateral wall, and the bore of check port is greater than the valve ball external diameter.
2. The new backflow preventer as claimed in claim 1, wherein the outer diameter of the valve ball is smaller than the inner diameter of the check valve body, and the outer diameter of the valve ball is larger than the inner diameter of the upper port of the central passage of the valve seat.
3. The novel backflow prevention device as claimed in claim 1, wherein the inspection opening is provided with an inspection opening transverse tube, and an outer port of the inspection opening transverse tube is provided with a plug.
4. A novel backflow prevention device as claimed in claim 1, 2 or 3, wherein said perforated barrier is a four-perforated barrier.
5. The novel backflow prevention device as claimed in claim 4, wherein the four-hole baffle plate is provided with four holes, wherein a hole is formed in the center of the baffle plate, and the other three holes form an annular matrix with the hole in the center.
CN201920261556.4U 2019-03-01 2019-03-01 Novel backflow stopping device Active CN210739469U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920261556.4U CN210739469U (en) 2019-03-01 2019-03-01 Novel backflow stopping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920261556.4U CN210739469U (en) 2019-03-01 2019-03-01 Novel backflow stopping device

Publications (1)

Publication Number Publication Date
CN210739469U true CN210739469U (en) 2020-06-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920261556.4U Active CN210739469U (en) 2019-03-01 2019-03-01 Novel backflow stopping device

Country Status (1)

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CN (1) CN210739469U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405280A (en) * 2021-05-27 2022-11-29 中国石油化工股份有限公司 Fracturing low-pressure manifold and liquid supply device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405280A (en) * 2021-05-27 2022-11-29 中国石油化工股份有限公司 Fracturing low-pressure manifold and liquid supply device thereof

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