CN212131390U

CN212131390U - Large-flow bypass valve for gas well

Info

Publication number: CN212131390U
Application number: CN202020053977.0U
Authority: CN
Inventors: 褚晓丹; 陈龙; 高云伟; 杨洁; 江强; 徐帮才; 冯德华; 孙文常; 张怡然
Original assignee: Sinopec Oilfield Service Corp; Sinopec Jianghan Petroleum Engineering Co Ltd
Current assignee: Sinopec Oilfield Service Corp; Sinopec Jianghan Petroleum Engineering Co Ltd
Priority date: 2020-01-11
Filing date: 2020-01-11
Publication date: 2020-12-11
Anticipated expiration: 2030-01-11

Abstract

The utility model discloses a large-flow bypass valve for a gas well, which comprises a main channel, a bypass channel, a valve shell, a main valve core and a differential pressure device; the main valve core is arranged in the valve shell and matched with the valve shell; the main passage extends through the valve housing and the main spool; the bypass passage is disposed on the valve housing and the main spool; the differential pressure device is positioned in the main channel and controls the main valve core to do up-and-down telescopic motion in the valve shell through fluid pressure; when the main valve core extends and retracts up and down in the valve shell, the bypass channel is movably communicated with the main channel. The high-flow bypass valve for the gas well not only can timely and quickly release pressure under the condition that the flow and the pressure of fluid in the pipe are rapidly increased, but also has stable and reliable performance and high reaction speed.

Description

Large-flow bypass valve for gas well

Technical Field

The utility model relates to an oil industry is instrument technical field in the pit, especially relates to a large-traffic bypass valve is used to gas well that is applicable to when the intraductal flow in pit is too big, adopts when needing quick pressure release.

Background

In a gas or liquid conveying pipeline, particularly in an oil field gas well, the flow of formation fluid is large, and a precision instrument in the well is easy to damage under the impact of large flow, so that economic loss is caused. Under such circumstances, the flow into the precision instrument needs to be controlled, the flow is effectively reduced, and rapid pressure relief is required.

The existing bypass valve or pressure relief valve only can relieve larger pressure, the purpose of rapid flow relief is difficult to realize, and the pressure relief process also has the problem of high-pressure fluid scouring.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a large-flow bypass valve for gas well, which not only can rapidly and timely release pressure under the condition of rapidly increasing the fluid flow and the pressure in the pipe, but also has stable and reliable performance and fast reaction speed.

In order to achieve the above object, the present invention adopts the following technical solutions:

a high-flow bypass valve for a gas well comprises a main channel, a bypass channel, a valve shell, a main valve core and a differential pressure device; the main valve core is arranged in the valve shell and matched with the valve shell; the main passage extends through the valve housing and the main spool; the bypass passage is disposed on the valve housing and the main spool; the differential pressure device is positioned in the main channel and controls the main valve core to do up-and-down telescopic motion in the valve shell through fluid pressure; when the main valve core extends and retracts up and down in the valve shell, the bypass channel is movably communicated with the main channel.

Further, the fit tolerance of the main valve element and the valve housing is less than 0.01 mm.

Furthermore, a shell channel extending along the axial direction is arranged on the valve shell, and a valve core channel extending along the axial direction is arranged on the main valve core; the shell channel is communicated with the valve core channel and forms the main channel together with the valve core channel.

Preferably, the main channel has a fan-shaped cross-section.

More preferably, the number of the main channels is several, and the main channels are distributed on the same circumference.

Further, the bypass passage includes a housing opening provided in a circumferential direction of the valve housing and communicating with an outside of the bypass valve, and a spool opening provided in a circumferential direction of the main spool and communicating with the main passage; the bypass passage communicates with the main passage when the housing opening coincides with the valve core opening.

Preferably, the number of the shell openings and the number of the valve core openings are respectively a plurality; the housing openings are equidistantly disposed on the valve housing; the spool openings are equidistantly disposed on the main spool.

Preferably, the housing opening and the valve element opening are respectively rectangular.

Furthermore, the differential pressure device comprises an auxiliary valve core, a valve core mounting groove and an elastic device, wherein the auxiliary valve core is used for forming a differential pressure valve with the main valve core; the valve core mounting groove is axially arranged in the main valve core; one end of the auxiliary valve core is fixed on the valve shell, and the other end of the auxiliary valve core extends into the valve core mounting groove and is elastically connected with the main valve core through the elastic device.

Preferably, the differential pressure device further comprises a limiting device for fixing the secondary valve core; the limiting device is positioned in the valve core mounting groove.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a gas well is with large-traffic bypass valve can effectively solve the influence that intraductal pressure increases rapidly and causes, can release a large amount of gas or liquid fast, realizes the automatic control to pipe internal pressure, remains throughout at safe level, even the interior flow sharply increases, benefits from the multirow passageway, can release pressure rapidly.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a preferred construction of a high flow bypass valve for a gas well according to the present invention;

fig. 2 is a schematic structural view of the main channel of the large-flow bypass valve for the gas well of the present invention.

Wherein the reference numerals of fig. 1 to 2 are explained as follows:

1. a valve housing; 2. a main valve element; 3. a limiting block; 4. an auxiliary valve core; 5. a spring; 6. a housing opening; 7. a valve core opening; 8. a housing channel; 9. a spool passage.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments as follows:

as shown in fig. 1, the large flow bypass valve for gas well of the present invention comprises a main channel, a bypass channel, a valve housing 1, a main valve element 2, and a differential pressure device; the main valve element 2 is arranged in the valve shell 1 and matched with the valve shell 1; the main channel penetrates through the valve housing 1 and the main valve element 2; the bypass passage is arranged on the valve housing 1 and the main valve element 2; the differential pressure device is positioned in the main channel and controls the main valve core 2 to do up-and-down telescopic motion in the valve shell 1 through fluid pressure; when the main valve core 2 extends and retracts up and down in the valve housing 1, the bypass passage is movably communicated with the main passage.

Specifically, the differential pressure device comprises an auxiliary valve core 4 which is used for forming a differential pressure valve with the main valve core 2, a valve core mounting groove matched with the auxiliary valve core 4, and an elastic device; the valve core mounting groove is axially arranged in the main valve core 2; one end of the auxiliary valve core 4 is fixed on the valve shell 1, and the other end of the auxiliary valve core extends into the valve core mounting groove and is elastically connected with the main valve core 2 through the elastic device. In order to simplify the utility model discloses a gas well is with specific structure of large-traffic bypass valve reaches effective reduction in production cost's purpose, and this embodiment is preferred resilient means is spring 5.

The differential pressure device also comprises a limiting device used for fixing the auxiliary valve core 4; the limiting device is positioned in the valve core mounting groove. In order to effectively fix the auxiliary valve core 4 and simplify the structure of the limiting device, the limiting device is preferably a limiting block 3.

The main spool 2 has a tolerance of less than 0.01mm with respect to the valve housing 1, so that it is ensured that the fluid (pressure) in the pipe cannot pass the side of the main spool 2.

Specifically, a housing channel 8 extending along the axial direction is arranged on the valve housing 1, and a valve core channel 9 extending along the axial direction is arranged on the main valve core 2; the housing channel 8 communicates with the spool channel 9 and forms the main channel with the spool channel 9.

As shown in fig. 2, the main channel has a fan-shaped cross-section. The number of the main channels is a plurality, and the main channels are distributed on the same circumference.

Specifically, the bypass passage includes a housing opening 6 provided in the circumferential direction of the valve housing 1 and communicating with the outside of the bypass valve, and a spool opening 7 provided in the circumferential direction of the main spool 2 and communicating with the main passage; when the housing opening 6 coincides with the spool opening 7, the bypass passage communicates with the main passage.

In this embodiment, it is preferable that the number of the housing openings 6 and the number of the valve core openings 7 are several; the housing openings 6 are arranged equidistantly on the valve housing 1; the valve element openings 7 are arranged equidistantly on the main valve element 2. Because the number of the openings is large, the aims of rapid pressure relief and large-discharge flow relief can be achieved. In this embodiment, it is further preferable that the housing opening 6 and the valve element opening 7 are respectively rectangular, so that the opening area is increased, and the purposes of rapid pressure relief and large-displacement flow relief are further achieved.

The utility model discloses a gas well is with large-traffic bypass valve's theory of operation specifically as follows:

because the auxiliary valve core 4 and the main valve core 2 form a differential pressure valve, and the spring 5 with higher elasticity is designed in the main valve core 2, when the flow of fluid in the pipe becomes larger, the pressure between the valve housing 1 and the main valve core 2 becomes larger, and the main valve core 2 is pushed to move in the valve housing 1 under the action of differential pressure area (namely the area of the upper end and the lower end of the main valve core 2). And the position of the auxiliary valve core 4 is kept unchanged under the action of the limiting block 3, the main valve core 2 and the auxiliary valve core 4 generate relative displacement, the spring 5 is compressed, and when the valve core opening 7 is aligned with the shell opening 6, the bypass channel and the main channel are opened, so that the fluid pressure in the pipe is released.

When the large flow fluid in the pipe is discharged from the bypass channel after the valve core opening 7 and the shell opening 6 are overlapped, the upper end surface area and the lower end surface area of the main valve core 2 are balanced in stress, the spring 5 is recovered to push the main valve core 2 to move reversely, the valve core opening 7 and the valve shell opening 6 are staggered to be completely not overlapped, and therefore the communication between the bypass channel and the main channel is closed.

When the flow rate of the fluid in the pipe is small, the pressure in the pipe is not enough to push the main valve core 2 to displace, the bypass channel is not opened, and the fluid passes through the main channel.

And the utility model discloses a gas well is with whole stainless steel that are of large-traffic bypass valve's complete machine metal part, applicable use under the environment that contains water in the oil field gas well and some corrosives, and stainless steel matter has guaranteed that the device can keep good mechanical properties even expose for a long time in the adverse circumstances in the pit.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A high-flow bypass valve for a gas well is characterized in that: comprises a main channel, a bypass channel, a valve shell,

A main spool and a differential pressure device; the main valve core is arranged in the valve shell and matched with the valve shell; the main passage extends through the valve housing and the main spool; the bypass passage is disposed on the valve housing and the main spool; the differential pressure device is positioned in the main channel and controls the main valve core to do up-and-down telescopic motion in the valve shell through fluid pressure; when the main valve core extends and retracts up and down in the valve shell, the bypass channel is movably communicated with the main channel.

2. The high flow bypass valve for gas wells as claimed in claim 1 wherein: the fit tolerance of the main valve element and the valve shell is less than 0.01 mm.

3. The high flow bypass valve for gas wells as claimed in claim 1 wherein: the valve shell is provided with a shell channel extending along the axial direction, and the main valve core is provided with a valve core channel extending along the axial direction; the shell channel is communicated with the valve core channel and forms the main channel together with the valve core channel.

4. A high flow bypass valve for a gas well as claimed in claim 3 wherein: the cross section of the main channel is in a fan shape.

5. The high flow bypass valve for gas wells of claim 4, wherein: the number of the main channels is a plurality, and the main channels are distributed on the same circumference.

6. The high flow bypass valve for gas wells as claimed in claim 1 wherein: the bypass channel comprises a shell opening which is arranged on the circumferential direction of the valve shell and is communicated with the outside of the bypass valve, and a valve core opening which is arranged on the circumferential direction of the main valve core and is communicated with the main channel; the bypass passage communicates with the main passage when the housing opening coincides with the valve core opening.

7. The high flow bypass valve for gas wells of claim 6, wherein: the number of the shell openings and the number of the valve core openings are respectively a plurality; the housing openings are equidistantly disposed on the valve housing; the spool openings are equidistantly disposed on the main spool.

8. The high flow bypass valve for gas wells of claim 6, wherein: the shell opening and the valve core opening are respectively rectangular.

9. A high flow bypass valve for a gas well as claimed in any one of claims 1 to 8 wherein: the differential pressure device comprises an auxiliary valve core, a valve core mounting groove and an elastic device, wherein the auxiliary valve core is used for forming a differential pressure valve with the main valve core; the valve core mounting groove is axially arranged in the main valve core; one end of the auxiliary valve core is fixed on the valve shell, and the other end of the auxiliary valve core extends into the valve core mounting groove and is elastically connected with the main valve core through the elastic device.

10. The high flow bypass valve for gas wells of claim 9, wherein: the differential pressure device also comprises a limiting device used for fixing the auxiliary valve core; the limiting device is positioned in the valve core mounting groove.