阅读说明：本技术 一种采油井单向阀装置 (One-way valve device for oil production well ) 是由 史昆 宋伟 唐怀清 张洪海 廖春 王勇 王红霞 李智 杨杰 王洋丽 于 2021-08-12 设计创作，主要内容包括：本发明涉及单向阀技术领域,具体是一种采油井单向阀装置,用于解决现有技术中在采油井生产异常或管网腐蚀泄露时会造成污染环境,影响安全生产并提高了岗位工人劳动强度的问题。本发明包括上阀体和下阀体,所述上阀体内安装有阀套,所述阀套的前部安装有阀座,后部安装有调节压板,所述阀座内安装有阀芯,所述阀芯与调节压板间安装有弹簧,所述上阀体的后端还开有调节槽,所述调节槽内安装有可与调节压板接触的隔板,所述隔板上开有连通阀套和下阀体的流通孔。本发明中当采油井生产异常或管网腐蚀泄漏时,弹簧会恢复原状而使阀芯封闭住阀座,从而可以避免液体倒流污染环境,同时提高了生产的安全性,降低了工人的劳动强度。(The invention relates to the technical field of one-way valves, in particular to a one-way valve device of an oil production well, which is used for solving the problems that the production of the oil production well is abnormal or a pipe network is corroded and leaked to cause environmental pollution, the safety production is influenced and the labor intensity of post workers is improved in the prior art. The valve comprises an upper valve body and a lower valve body, wherein a valve sleeve is arranged in the upper valve body, a valve seat is arranged at the front part of the valve sleeve, an adjusting pressure plate is arranged at the rear part of the valve sleeve, a valve core is arranged in the valve seat, a spring is arranged between the valve core and the adjusting pressure plate, an adjusting groove is also formed in the rear end of the upper valve body, a partition plate which can be in contact with the adjusting pressure plate is arranged in the adjusting groove, and a circulation hole for communicating the valve sleeve and the lower valve body is formed in the partition plate. When the oil production well is abnormal in production or a pipe network is corroded and leaked, the spring can restore to the original state to enable the valve core to seal the valve seat, so that liquid backflow can be avoided to pollute the environment, production safety is improved, and labor intensity of workers is reduced.)

1. The utility model provides a production well check valve device, includes the valve body, its characterized in that: the valve body includes interconnect's last valve body (1) and lower valve body (2), it installs valve barrel (7) in valve body (1) to go up, it has liquid outlet hole (721) to open on valve barrel (7), the forward-mounted of valve barrel (7) has disk seat (4), and adjusting plate (8) are installed at the rear portion, install case (5) that can seal disk seat (4) in disk seat (4), install spring (6) between case (5) and adjusting plate (8), the rear end of going up valve body (1) has still opened adjustment tank (10), install baffle (11) that can contact with adjusting plate (8) in adjustment tank (10), it has circulation hole (114) of intercommunication valve barrel (7) and lower valve body (2) to open on baffle (11).

2. A production well check valve device according to claim 1, wherein: the inner wall of the valve seat (4) is an inner conical surface, the outer surface of the valve core (5) is an outer conical surface, and the inner conical surface and the outer conical surface can be attached to each other.

3. A production well check valve device according to claim 1, wherein: the valve core (5) comprises a sealing section (51) and a left connecting section (52) which are formed into a whole, the sealing section (51) can seal the valve seat (4), the adjusting pressure plate (8) comprises a right connecting section (81) and an adjusting section (82) which are formed into a whole, the left connecting section (52) and the right connecting section (81) are both cylindrical, and the spring (6) is sleeved between the left connecting section (52) and the right connecting section (81).

4. A production well check valve device according to claim 1, wherein: the adjusting pressure plate (8) is in threaded connection with the valve sleeve (7), and an adjusting gap (9) is reserved between the adjusting pressure plate (8) and the partition plate (11).

5. A production well check valve device according to claim 1, wherein: baffle (11) include from inside to outside mutual shaping interior plectane (113) as an organic whole, strengthen stupefied (112) and outer ring (111), strengthen stupefied (112) quantity and be a plurality of, a plurality of strengthen stupefied (112) even setting including between plectane (113) and outer ring (111), adjacent two strengthen stupefied (112) between form opening (114).

6. A production well check valve device according to claim 1, wherein: the valve sleeve (7) comprises a threaded connection section (71) and a liquid outlet section (72) which are integrally formed, the threaded connection section (71) is connected with the upper valve body (1), the liquid outlet holes (721) are multiple in number, and the liquid outlet holes (721) are uniformly arranged on the liquid outlet section (72).

7. A production well check valve device according to claim 1, wherein: the upper valve body (1) is connected with the valve sleeve (7) through threads, and the valve sleeve (7) is connected with the valve seat (4) through threads.

8. A production well check valve device according to any of claims 1-7, wherein: the end surfaces of the upper valve body (1) and the lower valve body (2) are provided with a plurality of connecting holes (3).

Technical Field

The invention relates to the technical field of one-way valves, in particular to a one-way valve device for an oil production well.

Background

An oil and gas field may have one or more oil and gas reservoir, the oil field of the main oil reservoir of being in same area, the gas field of the main gas reservoir of being, along with the development entering later stage in oil field, the comprehensive moisture in oil field rises, the defeated production pipe network of oil recovery collection is changed into cold transportation by heat defeated, because single well oil production descends and moisture rises, defeated flow resistance of collection increases, for the normal production of guaranteeing oil recovery well, defeated flow of collection now adopts the mode production of many oil wells series connection pipe network, and the problem that the mode of many oil wells series connection pipe network exists has:

1. when the oil production well has the leakage of an underground oil pipe or an oil well pump valve, the crude oil of the gathering and transportation production manifold can reversely flow into the bottom of the well;

2. the corrosion perforation of the gathering pipeline can cause the leakage of crude oil to cause environmental pollution;

3. when the polish rod of the oil production well breaks off, crude oil can leak from the sealing box to cause environmental pollution;

4. measures should be taken to prevent the liquid in the gathering flow from flowing back into the well due to the influence of pressure among multiple wells and low-yield and low-efficiency oil wells.

In conclusion, the gathering and transportation process adopts a mode of connecting a plurality of oil wells in series with a pipe network for production, and the liquid in the gathering and transportation process flows backwards due to the abnormal production of the oil production wells or corrosion and leakage of the pipe network, so that the environment is polluted, the safety production is influenced, and the labor intensity of post workers is improved. Therefore, there is an urgent need to install a check valve at the production wellhead or gathering production manifold to prevent the above problems.

Disclosure of Invention

Based on the problems, the invention provides a one-way valve device for an oil production well, which is used for solving the problems that in the prior art, when the oil production well is abnormal in production or a pipe network is corroded and leaked, liquid in a gathering and transportation flow flows backwards, so that the environment is polluted, the safety production is influenced, and the labor intensity of post workers is improved. When the production of the oil production well is abnormal or the pipe network is corroded and leaked, and the pressure of a leakage point is less than that of a manifold, the spring can restore to the original state to enable the valve core to seal the valve seat, so that the fluid cannot flow reversely, the liquid can be prevented from flowing backwards to pollute the environment, the production safety is improved, and the labor intensity of workers is reduced.

The invention specifically adopts the following technical scheme for realizing the purpose:

the utility model provides an oil recovery well check valve device, includes the valve body, the valve body includes interconnect's last valve body and lower valve body, upward install the valve barrel in the valve body, it has a liquid hole to open on the valve barrel, the forward-mounted of valve barrel has the disk seat, and adjusting plate is installed at the rear portion, install the case that can seal the disk seat in the disk seat, install the spring between case and adjusting plate, the rear end of going up the valve body has still opened the adjustment tank, install the baffle that can contact with adjusting plate in the adjustment tank, it has the circulation hole of intercommunication valve barrel and lower valve body to open on the baffle.

Preferably, the inner wall of the valve seat is an inner conical surface, the outer surface of the valve core is an outer conical surface, and the inner conical surface and the outer conical surface can be attached to each other.

The preferable structure of the valve core is as follows: the valve core comprises a sealing section and a left connecting section which are formed into a whole, the sealing section can seal the valve seat, the adjusting pressure plate comprises a right connecting section and an adjusting section which are formed into a whole, the left connecting section and the right connecting section are both cylindrical, and the spring is sleeved between the left connecting section and the right connecting section.

Furthermore, the adjusting pressure plate is in threaded connection with the valve sleeve, and an adjusting gap is reserved between the adjusting pressure plate and the partition plate.

The preferred structure of the separator is: the baffle includes from inside to outside mutual shaping interior plectane as an organic whole, strengthens stupefied and outer ring, it is a plurality of, a plurality of to strengthen stupefied even setting within a definite time plectane and outer ring, adjacent two strengthen and form the opening between stupefied.

The preferred structure of the valve sleeve is: the valve sleeve comprises a threaded connection section and a liquid outlet section which are formed into a whole, the threaded connection section is connected with the upper valve body, the liquid outlet holes are multiple in number and are uniformly opened on the liquid outlet section.

Preferably, the upper valve body is connected with the valve sleeve through threads, and the valve sleeve is connected with the valve seat through threads.

Preferably, the end surfaces of the upper valve body and the lower valve body are both provided with a plurality of connecting holes.

The invention has the following beneficial effects:

(1) when the production of the oil production well is abnormal or the pipe network is corroded and leaked, and the pressure of a leakage point is less than that of a manifold, the spring can restore to the original state to enable the valve core to seal the valve seat, so that the fluid cannot flow reversely, the liquid can be prevented from flowing backwards to pollute the environment, the production safety is improved, and the labor intensity of workers is reduced.

(2) When the valve core seals the valve seat, the inner conical surface and the outer conical surface are attached to each other, so that the valve core can better seal the valve seat, and the reverse flow of fluid can be further prevented.

(3) According to the invention, the spring is sleeved between the left connecting section and the right connecting section, and the left connecting section and the right connecting section respectively extend into the spring, so that the spring can be more stably arranged between the valve core and the adjusting pressure plate.

(4) The adjusting pressure plate is connected with the valve sleeve through the screw thread, the adjusting gap is reserved between the adjusting pressure plate and the clapboard, under the condition of not replacing the spring, if the tightness degree of the spring is required to be adjusted, namely the spring elasticity between the adjusting valve core and the adjusting pressure plate is adjusted, the adjusting pressure plate can be rotated, and the adjusting pressure plate can move towards the adjusting gap or move towards the direction far away from the adjusting gap when rotating, namely move towards the clapboard or move towards the direction far away from the clapboard, so that the distance between the valve core and the adjusting pressure plate can be adjusted, the stretched or compressed length of the spring can be adjusted, the pressure of the spring between the valve core and the adjusting pressure plate can be adjusted according to the actual condition, and the valve core and the valve seat can be conveniently and tightly matched according to the actual condition and the requirement, the operation is simple and convenient, and the investment of labor force is less.

(5) According to the invention, the partition plate is designed according to the structures of the inner circular plate, the reinforcing ribs and the outer circular ring, so that liquid can uniformly and smoothly flow into the lower valve body through the partition plate, and meanwhile, the partition plate can prevent the adjusting pressure plate from loosening and falling off in the repeated opening and closing process of the valve core, so that the adjusting pressure plate can be more stable in use.

(6) The one-way valve of the oil production well has the advantages of small overall length, simple structure, high reliability, high bearing strength and small influence caused by temperature limitation, and is arranged in an operation area of the oil production well to have small influence on operation.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front sectional view of the present invention;

FIG. 3 is a schematic perspective view of an upper valve body according to the present invention;

FIG. 4 is a schematic front sectional view of the upper valve body of the present invention;

FIG. 5 is a schematic perspective view of a lower valve body according to the present invention;

FIG. 6 is a schematic front sectional view of the lower valve body of the present invention;

FIG. 7 is a schematic perspective view of the spring, valve core and regulator pressure plate of the present invention installed in a valve housing;

FIG. 8 is a schematic front sectional view of the upper valve body spring, valve spool and regulator pressure plate of the present invention installed in the valve housing;

FIG. 9 is a schematic perspective view of a separator according to the present invention;

FIG. 10 is a schematic view of the cartridge of the present invention;

FIG. 11 is a schematic perspective view of an upper valve body according to the present invention;

reference numerals: 1 upper valve body, 2 lower valve body, 3 connecting holes, 4 valve seats, 5 valve cores, 51 sealing sections, 52 left connecting sections, 6 springs, 7 valve sleeves, 71 threaded connecting sections, 72 liquid outlet sections, 721 liquid outlet holes, 8 adjusting pressing plates, 81 right connecting sections, 82 adjusting sections, 9 adjusting gaps, 10 adjusting grooves, 11 partition plates, 111 outer circular rings, 112 reinforcing ribs, 113 inner circular plates and 114 circulation holes.

Detailed Description

For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.

Example 1:

as shown in fig. 1-8, a check valve device for an oil production well comprises a valve body, the valve body comprises an upper valve body 1 and a lower valve body 2 which are connected with each other, a valve sleeve 7 is installed in the upper valve body 1, a liquid outlet 721 is formed in the valve sleeve 7, a valve seat 4 is installed in the front of the valve sleeve 7, an adjusting pressure plate 8 is installed in the rear of the valve sleeve 7, a valve core 5 capable of sealing the valve seat 4 is installed in the valve seat 4, a spring 6 is installed between the valve core 5 and the adjusting pressure plate 8, an adjusting groove 10 is further formed in the rear end of the upper valve body 1, a partition plate 11 capable of contacting with the adjusting pressure plate 8 is installed in the adjusting groove 10, and a circulation hole 114 communicating the valve sleeve 7 and the lower valve body 2 is formed in the partition plate 11.

The working principle is as follows: the one-way valve is arranged at an oil extraction well head or a gathering and transportation production manifold, when the pressure of an oil extraction well is greater than the pressure of the manifold, the pressure acting on the valve core 5 overcomes the spring force and the friction force to open the valve core 5, the spring 6 is compressed, fluid enters the valve sleeve 7 through a gap between the valve seat 4 and the valve core 5 in sequence, then enters the lower valve body 2 through the liquid outlet 721 and the circulation hole 114 in sequence, and then enters the manifold through the lower valve body 2; when the pressure of a leak point is smaller than the pressure of a manifold due to abnormal production of an oil production well or corrosion and leakage of a pipe network, the spring 6 has the tendency of recovering the original state, the valve core 5 is driven to move towards the valve seat 4 until the valve core 5 is contacted and tightly propped against the valve seat 4, the whole one-way valve is closed, and thus the fluid cannot flow reversely, so that the purpose of controlling the one-way flow of the fluid is achieved, the environment pollution caused by backflow of the fluid can be avoided, the production safety is improved, the labor intensity of workers is reduced, meanwhile, the whole length of the one-way valve of the oil production well is small, the structure is simple, the reliability is high, the bearing strength is high, the material of the one-way valve can be iron, the influence caused by the limitation of temperature is small, and the one-way valve is installed in an operation area of the oil production well and has small influence on the operation.

Example 2:

referring to fig. 1 to 11, on the basis of the above embodiment 1, this embodiment provides a preferable structure of the valve element 5 and the adjusting pressure plate 8, that is, the inner wall of the valve seat 4 is an inner conical surface, the outer surface of the valve element 5 is an outer conical surface, the inner conical surface and the outer conical surface can be attached to each other, when the valve element 5 closes the valve seat 4, the inner conical surface and the outer conical surface are attached to each other, so that the valve element 5 can better close the valve seat 4, and further, the reverse flow of fluid can be prevented.

The preferable structure of the valve core 5 is: the valve core 5 comprises a sealing section 51 and a left connecting section 52 which are integrally formed, the sealing section 51 can seal the valve seat 4, the adjusting pressure plate 8 comprises a right connecting section 81 and an adjusting section 82 which are integrally formed, the left connecting section 52 and the right connecting section 81 are both cylindrical, and the spring 6 is sleeved between the left connecting section 52 and the right connecting section 81. Spring 6 cover is established between left linkage segment 52 and right linkage segment 81, and left linkage segment 52 and right linkage segment 81 extend to in the spring 6 respectively, can be more stable like this install spring 6 between case 5 and adjusting the clamp plate 8.

Example 3:

as shown in fig. 2, on the basis of the above embodiment 1, this embodiment provides a preferable structure for facilitating the adjustment of the pressure between the valve core 5 and the adjusting pressure plate 8, that is, the adjusting pressure plate 8 is connected with the valve sleeve 7 by a screw thread, and an adjusting gap 9 is left between the adjusting pressure plate 8 and the partition 11.

In this embodiment: when the degree of tightness of the spring 6, namely the elasticity of the spring 6 received between the valve core 5 and the adjusting pressure plate 8 is adjusted without replacing the spring 6, the adjusting pressure plate 8 can be rotated, and because the adjusting pressure plate 8 is connected with the valve sleeve 7 through the thread, the adjusting pressure plate 8 moves toward the adjusting gap 9 or away from the adjusting gap 9, that is, toward the partition 11 or away from the partition 11, in this way, the distance between the valve core 5 and the adjusting pressure plate 8 can be adjusted, so that the length of the spring 6 which is stretched or compressed can be adjusted, further, the pressure of the spring 6 between the valve core 5 and the adjusting pressure plate 8 can be adjusted according to the actual situation, therefore, the valve core 5 and the valve seat 4 can be conveniently and tightly matched according to actual conditions and requirements, the operation is simple and convenient, and the investment of labor force is less.

Example 4:

as shown in fig. 2 and 9, on the basis of the above embodiment 1, the present embodiment provides a preferable structure of the partition plate 11 and the valve housing 7 as follows: the partition plate 11 comprises an inner circular plate 113, a plurality of reinforcing ribs 112 and an outer circular ring 111 which are formed into a whole from inside to outside, the number of the reinforcing ribs 112 is multiple, the plurality of reinforcing ribs 112 are uniformly arranged between the inner circular plate 113 and the outer circular ring 111, and a circulation hole 114 is formed between two adjacent reinforcing ribs 112.

In this embodiment: the partition plate 11 is designed according to the structures of the inner circular plate 113, the reinforcing rib 112 and the outer circular ring 111, so that liquid can uniformly and smoothly flow into the lower valve body 2 through the partition plate 11, and meanwhile, the partition plate 11 can prevent the adjusting pressure plate 8 from loosening and falling off in the process of repeated opening and closing of the valve core 5, so that the adjusting pressure plate 8 can be more stable in use.

The preferred construction of the valve housing 7 is: the valve sleeve 7 comprises a threaded connection section 71 and a liquid outlet section 72 which are formed into a whole, and the threaded connection section 71 is connected with the upper valve body 1, so that the valve sleeve 7 can be conveniently detached from the upper valve body 1, and the length of the valve sleeve 7 entering the upper valve body 1 can be conveniently adjusted; the number of the liquid outlet holes 721 is plural, and the plural liquid outlet holes 721 are uniformly opened on the liquid outlet section 72, so that the liquid discharged from the valve housing 7 is more uniform, and the whole check valve is more stable in the using process.

Preferably, the upper valve body 1 is connected with the valve sleeve 7 through threads, and the valve sleeve 7 is connected with the valve seat 4 through threads, so that the valve seat 4 can be conveniently detached from the valve sleeve 7, the length of the valve seat 4 extending into the valve sleeve 7 can be conveniently adjusted, and the whole one-way valve is more convenient to detach and install.

Preferably, the end faces of the upper valve body 1 and the lower valve body 2 are provided with a plurality of connecting holes 3, and the one-way valve is more convenient to install at an oil extraction wellhead or a gathering and transporting production manifold through the connecting holes 3.

The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the process of verifying the invention, and are not intended to limit the scope of the invention, which is defined by the claims.