CN111472718A - Three-in-one switch adjusting device for natural gas well and adjusting method thereof - Google Patents

Abstract

The invention provides a three-in-one switch regulating device for a natural gas well, comprising: a casing, a valve body, a regulating cylinder, a valve core cylinder, a remote control action mechanism, a wellhead pressure sensor, and an external pipeline pressure sensor; The flange and the detection interface, the two ends of the shell are provided with the outlet flange and the inner interface, the lower end of the valve body is the valve cylinder, the side wall of the valve cylinder is provided with a side valve hole, and the valve cylinder is fixed in the inner interface; the regulating cylinder and the valve cylinder The constriction of the valve core is fixedly connected, and extends into the valve cylinder, and there is a pressure regulating hole on the side wall of the regulating cylinder; The pull rod passes through the valve body and extends out of the valve body, and is connected with the remote control action mechanism; the detection probe of the wellhead pressure sensor is communicated with the detection interface; the detection probe of the external pipeline pressure sensor is communicated with the inner end of the outlet flange. The invention provides a natural gas well switch adjustment method, which is implemented by a natural gas well three-in-one switch adjustment device.

Description

A three-in-one switch regulating device for natural gas well and its regulating method

technical field

The invention belongs to the technical field of natural gas well exploitation, and in particular relates to a three-in-one switch regulating device for a natural gas well and a regulating method thereof.

Background technique

The functions of wellhead control devices in most oil-producing and gas-producing countries in the world are basically the same, that is, well opening and closing functions, pressure regulating functions, and safety protection functions. The corresponding control objects are production gate valves, needle valves and wellhead shut-off valves. At present, some domestic gas-producing areas have carried out wireless remote control for shut-in and well-opening, regulating process parameters and wellhead safety protection devices, especially in the Sulige gas field in my country, a large number of tests and applications have been carried out, and the high-pressure natural gas wellhead gate valve has been tested and applied. The reason for the remote control of the work is that the production gate valve and the wellhead shut-off valve can only be fully opened or fully closed, and cannot be used to adjust the pressure of the external pipeline. The needle valve can adjust the pressure, but it cannot be used to open and close wells. . However, the remote control of the three gate valves of the high-pressure natural gas well is expensive, the signals interfere with each other greatly, and the operation is complicated.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a three-in-one switch regulating device for a natural gas well and a regulating method thereof, which are used to overcome the above-mentioned problems or at least partially solve or alleviate the above-mentioned problems.

The present invention proposes a three-in-one switch regulating device for a natural gas well, comprising:

A shell, the side wall of the shell is provided with an inlet flange and a detection interface, one end of the shell is provided with an outlet flange, and the other end is provided with an inner interface, the inlet flange, the detection interface, The outlet flange is internally communicated with the inner interface, and a plug is connected to the detection interface;

The valve body is cylindrical, the lower end of which is a valve cylinder, the upper end is provided with a sealing sliding hole, the side wall of the valve cylinder is provided with a side valve hole, and the lower end of the valve cylinder is provided with a constriction, so The valve barrel extends into and is fixed in the inner port of the housing, the side valve hole is communicated with the inlet flange and the inner port of the detection port, and the end of the valve barrel is connected to the outlet The inner ends of the flanges are connected;

Adjustment cylinder, the lower end of the adjustment cylinder is fixed in the constriction of the lower end of the valve cylinder, the adjustment cylinder extends into the valve cylinder, and forms an annular space with the valve cylinder, the adjustment cylinder A pressure regulating hole is arranged on the side wall;

A valve core cylinder, the outer side wall of the valve core cylinder is slidingly and sealingly matched with the inner side wall of the valve cylinder, the inner side wall is slidingly and sealingly matched with the outer side wall of the regulating cylinder, and the upper end of the valve core cylinder is provided with a push-pull rod, The push-pull rod extends out of the valve body through the sealing sliding hole;

a remote control action mechanism, the remote control action mechanism is arranged on the upper end of the valve body, and the remote control action mechanism is drive-connected with the push-pull rod;

a wellhead pressure sensor, the wellhead pressure sensor is connected to the plug, and its detection probe is communicated with the detection interface;

An external transmission line pressure sensor is fixed on the casing, and its detection probe is communicated with the inner end of the outlet flange.

The present invention also has the following optional features.

Optionally, the remote control action mechanism includes:

an action frame, the action frame is connected to the upper end of the valve body, a driven bevel gear and a driving bevel gear are respectively rotated and arranged on the action frame, and a screw hole is arranged at the shaft center of the driven bevel gear, The front end of the push-pull rod is provided with threads and is threaded with the driven bevel gear;

A remote control motor and a reducer, the remote control motor and the reducer are connected, the remote control motor and the reducer are fixed on the action frame, and the main shaft is connected with the drive bevel gear.

Optionally, an anti-rotation plate is arranged on the action frame, an anti-rotation hole is arranged on the anti-rotation plate, a flat key is arranged in the anti-rotation hole, a key groove is arranged on the surface of the push-pull rod, and the The push-pull rod passes through the anti-rotation hole, and the flat key extends into the key slot.

Optionally, a manual bevel gear is rotatably disposed on the anti-rotation plate, the manual bevel gear meshes with the driven bevel gear, and one end of the manual bevel gear is connected with a hand wheel.

Optionally, an annular groove is disposed on the side wall of the valve cylinder, and the side valve hole is disposed in the annular groove.

Optionally, the upper end of the valve core barrel is provided with an installation hole, and the lower end of the push-pull rod extends into the installation hole and is fixedly connected by a pin.

Optionally, a balance channel is provided at the lower end of the push-pull rod, and the balance channel passes out from the side wall of the push-pull rod protruding from the upper end of the valve core barrel.

Optionally, a drain hole is provided on the side wall of the regulating cylinder near the constriction of the lower end of the valve cylinder.

Optionally, the lower port and inner side wall of the valve cylinder are provided with a layer of wear-resistant inserts.

The present invention also proposes a natural gas well switch adjustment method, which is implemented by the natural gas well three-in-one switch adjustment device described in claims 1 to 9, characterized in that the push-pull rod and the valve core are driven by the Internet of Things platform to control the remote control action mechanism The barrel moves in the valve barrel of the valve body, and the pressure of the external pipeline is adjusted by adjusting the opening of the side valve hole on the valve barrel and the pressure regulating hole on the regulating barrel. By completely blocking or completely releasing the side valve The hole and pressure regulating hole close and open the wellhead of the natural gas well, the pressure in the inlet flange is detected by the wellhead pressure sensor, and the pressure in the outlet flange is detected by the external pipeline pressure sensor. When the pressure in the inlet flange remains unchanged , The pressure in the outlet flange suddenly decreases, and the Internet of Things platform controls the remote control action mechanism to drive the push-pull rod and the spool cylinder to move in the valve cylinder of the valve body, so that the spool cylinder completely blocks the side valve hole and the pressure regulating hole. Cut-off function for natural gas wells.

Beneficial effects of the present invention:

The natural gas well three-in-one switch regulating device and its regulating method of the present invention use a remote control action mechanism to drive a push-pull rod to move the valve core barrel, so that the valve core barrel can block or release the side valve hole on the valve barrel of the valve body and Adjust the pressure regulating hole on the cylinder to realize the closing and communication between the inlet flange and the outlet flange of the valve body. At the same time, the gas pressure in the natural gas well is detected by the wellhead pressure sensor, and the gas pressure in the external pipeline is detected by the external pipeline pressure sensor. The networking platform can automatically perform the cut-off action according to the feedback of the pressure difference between the two, and the staff can also remotely adjust the pressure of the external pipeline through the Internet of Things platform; since each wellhead only needs to remotely control one valve body to perform opening and closing, cut-off and The parameter adjustment function has low remote control cost, no signal interference between the same wellhead, and simple operation.

Description of drawings

FIG. 1 is a schematic diagram of a full cross-sectional structure of an embodiment of a three-in-one switch regulating device for a natural gas well according to the present invention.

In the above figure: 1 shell; 101 inlet flange; 102 detection port; 103 outlet flange; 104 inner port; 2 valve body; 201 valve barrel; 202 sealing sliding hole; 203 side valve hole; 204 annular groove; 3 Adjusting barrel; 301 pressure regulating hole; 302 drain hole; 4 valve core barrel; 401 wear-resistant insert; 5 push-pull rod; 501 keyway; 502 pressure balance channel; 6 plug; 7 wellhead pressure sensor; 8 external pipeline pressure sensor ;9 Action frame; 10 Driven bevel gear; 11 Drive bevel gear; 12 Remote control motor; 13 Reducer; 14 Anti-rotation plate; 15 Anti-rotation hole; 16 Flat key; 17 Manual bevel gear; 18 Handwheel; 19 Pin; 20 IoT platform.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Detailed ways

Example 1

Referring to FIG. 1, an embodiment of the present invention proposes a three-in-one switch regulating device for a natural gas well, including: a casing 1, a valve body 2, a regulating cylinder 3, a valve core cylinder 4, a remote control mechanism, a wellhead pressure sensor 7, an external Pipeline pressure sensor 8; an inlet flange 101 and a detection interface 102 are arranged on the side wall of the casing 1, an outlet flange 103 is arranged at one end of the casing 1, and an inner interface 104 is arranged at the other end. The inlet flange 101, the detection interface The interface 102, the outlet flange 103 and the inner interface 104 are connected internally, and the plug 6 is connected to the detection interface 102; the valve body 2 is cylindrical, the lower end of which is a valve cylinder 201, and the upper end is provided with a sealing sliding hole 202, the valve cylinder 201 A side valve hole 203 is provided on the side wall of the valve, the lower end of the valve cylinder 201 is provided with a constriction, the valve cylinder 201 extends into and is fixed in the inner interface 103 of the housing 1, and the side valve hole 203 is connected with the inlet flange 101 and the detection interface. The inner port of 102 is communicated with each other, and the end of the valve cylinder 201 is communicated with the inner end of the outlet flange 103; An annular space is formed between it and the valve cylinder 201. The side wall of the regulating cylinder 3 is provided with a pressure regulating hole 301; The outer side wall of the cylinder 3 is slidably sealed and matched, and the upper end of the valve core cylinder 4 is provided with a push-pull rod 5, which extends out of the valve body 2 through the sealing sliding hole 202; the remote control action mechanism is arranged on the upper end of the valve body 2, and the remote control action The mechanism is drivingly connected with the push-pull rod 5; the wellhead pressure sensor 7 is connected to the plug 6, and its detection probe is communicated with the detection interface 102; the external pipeline pressure sensor 8 is fixed on the casing 1, and its detection probe is connected to the outlet flange 103. connected to the inner end.

Referring to FIG. 1 , the inlet flange 101 and the outlet flange 103 of the casing 1 are connected to the wellhead pipeline of the natural gas well, and the closed state of the regulating valve is used as the initial state. At this time, the side wall of the valve core barrel 4 is in the valve barrel 201 The side valve hole 203 on the valve barrel 201 and the pressure regulating hole 301 on the regulating barrel 3 are internally blocked, so that the inlet flange 101 and the outlet flange 103 cannot be connected;

When the staff needs to conduct the natural gas wellhead, the Internet of Things platform 20 controls the remote control action mechanism to drive the push-pull rod 5 and the valve core cylinder 4 to move upward in the valve cylinder 201 of the valve body 2 until the valve core cylinder 4 lets the side valve open. Hole 203 and pressure regulating hole 301. At this time, the inlet flange 101 connected to the wellhead of the natural gas well can be connected through the side valve hole 203, the pressure regulating hole 301 and the outlet flange 103, and the natural gas in the natural gas well passes through the inlet flange 101. , The side valve hole 203 enters the valve barrel 201, and enters the regulating barrel 3 from the pressure regulating hole 301, and flows into the natural gas pipeline from the outlet flange 103;

When the staff needs to close the natural gas well, the remote control action mechanism can be controlled by the IoT platform 20 to drive the push-pull rod 5 and the valve core cylinder 4 to move downward in the valve cylinder 201 until the valve core cylinder 4 blocks the side valve on the valve cylinder 201 The hole 203 and the pressure regulating hole 301 on the regulating cylinder 3 are sufficient;

When it is necessary to adjust the pressure of the external transmission line, it is only necessary to partially block the pressure regulating hole 301 on the adjustment cylinder 3 by the valve core cylinder 201, and at the same time, the pressure signal sent back to the Internet of Things detection platform 20 by the external transmission pipeline pressure sensor 8 is corrected. .

When the external pipeline is ruptured, the wellhead pressure sensor 7 detects that the pressure is normal, and the external pipeline pressure sensor 8 detects a sudden drop in pressure. At this time, the IoT platform 20 will automatically control the remote control mechanism to drive the push-pull rod 5 and the spool 4 Move downward rapidly in the valve barrel 201 until the valve core barrel 4 completely blocks the side valve hole 203 on the valve barrel 201 and the pressure regulating hole 301 on the regulating barrel 3, and cuts off the gap between the inlet flange 101 and the outlet flange 103 of connectivity.

Example 2

1, on the basis of Embodiment 1, the remote control action mechanism includes an action frame 9, a remote control motor 12, and a reducer 13; the action frame 9 is connected to the upper end of the valve body 2, and the action frame 9 is rotated and provided with meshing The driven bevel gear 10 and the driving bevel gear 11, the shaft center of the driven bevel gear 10 is provided with a screw hole, the front end of the push-pull rod 5 is provided with a thread, and is threaded with the driven bevel gear 10; the remote control motor 12 and the reducer 13 are in phase. Connection, the remote control motor 12 and the reducer 13 are fixed on the action frame 9, and the main shaft is connected with the driving bevel gear 11.

When the staff needs to conduct the natural gas wellhead, the remote control motor 12 is controlled to rotate through the Internet of Things platform 20. The remote control motor 12 drives the driving bevel gear 11 and the passive bevel gear 10 to rotate through the reducer 3. When the passive bevel gear 10 rotates, its axis The thread in the screw hole at the center pushes the push-pull rod 5 to move upward, and the push-pull rod 5 drives the valve core cylinder 4 to move upward in the valve cylinder 201 of the valve body 2 until the valve core cylinder 4 lets the side valve hole 203 and the pressure regulating hole open. 301 , at this time, the inlet flange 101 connected to the wellhead of the natural gas well can communicate with the outlet flange 103 through the side valve hole 203 , the pressure regulating hole 301 .

Example 3

Referring to FIG. 1 , on the basis of Embodiment 2, the action frame 9 is provided with an anti-rotation plate 14 , the anti-rotation plate 14 is provided with an anti-rotation hole 15 , and a flat key 16 is arranged in the anti-rotation hole 15 . The surface is provided with a key slot 501 , the push-pull rod 5 passes through the anti-rotation hole 15 , and the flat key 16 extends into the key slot 501 .

The keyway 501 extends axially on the surface of the push-pull rod 5. After the push-pull rod 5 extends into the anti-rotation plate 14, the flat key 16 on the anti-rotation plate 14 extends into the keyway 501, which can prevent the push-pull rod 5 from rotating and ensure the driven bevel gear 10 The push-pull rod 5 can be pushed through the thread during rotation.

Example 4

1 , on the basis of Embodiment 1, a manual bevel gear 17 is rotatably provided on the anti-rotation plate 14 .

The hand wheel 18 is fixedly connected with the end face of the manual bevel gear 17, and the staff can drive the passive bevel gear 17 to rotate by rotating the hand wheel 18, so as to adjust the position of the valve core barrel 4, and realize the control of the opening and closing of the natural gas well and the external pipeline. Pressure regulation.

Example 5

Referring to FIG. 1 , on the basis of Embodiment 1, an annular groove 204 is provided on the side wall of the valve cylinder 201 , and the side valve hole 203 is provided in the annular groove 204 .

The number of the side valve holes 203 is eight, all of which are arranged in the annular groove 204 on the valve cylinder 201 .

Example 6

Referring to FIG. 1 , on the basis of Embodiment 1, the upper end of the valve core barrel 4 is provided with an installation hole, and the lower end of the push-pull rod 5 extends into the installation hole and is fixedly connected by a pin 19 .

After the lower end of the push-pull rod 5 extends into the installation hole at the upper end of the valve core barrel 4, the pin 19 transversely penetrates the valve core barrel 4 and the push-pull rod 5 to be fixedly connected together.

Example 7

Referring to FIG. 1 , on the basis of Embodiment 6, the lower end of the push-pull rod 5 is provided with a balance channel 502 .

When the push-pull rod 5 pushes the valve core cylinder 4 to move downward, a vacuum will be generated between the valve core cylinder 4 in the valve cylinder 201 and the inner end of the sealing sliding hole 202 , so it is necessary to place a gap between the end of the push-pull rod 5 and the side wall. A pressure balance channel 502 is arranged between the two, and the pressure balance channel 502 consists of a transverse through hole radially penetrating the push-pull rod 5 and a through hole disposed at the end of the push-pull rod 5. The two are connected to ensure that each The pressure is balanced at the place, which can reduce the movement resistance of the spool cylinder 4.

Example 8

Referring to FIG. 1 , on the basis of Embodiment 1, a drain hole 302 is provided on the side wall of the regulating cylinder 3 near the constriction of the lower end of the valve cylinder 201 .

Moisture or other contaminants from the natural gas will accumulate between the regulating cylinder 3 and the lower port of the valve cylinder 201 , and a drain hole 302 is provided at the lower part of the regulating cylinder 3 to facilitate the discharge of water or dirt.

Example 9

Referring to FIG. 1 , on the basis of Embodiment 1, a layer of wear-resistant insert 401 is provided on the lower port and the inner side wall of the valve cylinder 201 .

The wear-resistant insert 401 can be made of ceramic material or other alloy materials to ensure the sealing between the valve cylinder 201 and the regulating cylinder 3 .

Example 10

Referring to FIG. 1, an embodiment of the present invention provides a natural gas well switch adjustment method, which is implemented by the natural gas well three-in-one switch adjustment device described in any of the above embodiments, mainly: controlling the remote control action through the Internet of Things platform 20 The mechanism drives the push-pull rod 5 and the valve core cylinder 4 to move in the valve cylinder 201 of the valve body 2 , and the valve core cylinder 4 adjusts the opening of the side valve hole 203 on the valve cylinder 201 and the pressure regulating hole 301 on the adjustment cylinder 3 to Adjust the pressure of the external pipeline, close and open the wellhead of the natural gas well by completely blocking or completely opening the side valve hole 203 and the pressure regulating hole 301, and detect the pressure in the inlet flange 101 through the wellhead pressure sensor 7, The pipeline pressure sensor 8 detects the pressure in the outlet flange 103. When the pressure in the inlet flange 101 remains unchanged and the pressure in the outlet flange 103 suddenly decreases, the IoT platform 20 controls the remote control mechanism to drive the push-pull rod 5 and the valve core. The cylinder 4 moves in the valve cylinder 201 of the valve body 2, so that the valve core cylinder 201 completely blocks the side valve hole 203 and the pressure regulating hole 301, thereby realizing the shut-off function of the natural gas well.

The inlet flange 101 and the outlet flange 103 of the casing 1 are connected to the wellhead pipeline of the natural gas well, and the closed state of the regulating valve is the initial state. At this time, the side wall of the valve core barrel 4 blocks the valve in the valve barrel 201 The side valve hole 203 on the barrel 201 and the pressure regulating hole 301 on the regulating barrel 3 prevent the inlet flange 101 and the outlet flange 103 from being connected;

When the staff needs to conduct the natural gas wellhead, the remote control motor 12 is controlled to rotate through the Internet of Things platform 20. The remote control motor 12 drives the driving bevel gear 11 and the passive bevel gear 10 to rotate through the reducer 3. When the passive bevel gear 10 rotates, its axis The thread in the threaded hole at the center pushes the push-pull rod 5 to move upward, and the push-pull rod 5 drives the valve core cylinder 4 to move upward in the valve cylinder 201 of the valve body 2 until the valve core cylinder 4 clears the side valve hole 203 and the pressure regulating hole. 301, at this time, the inlet flange 101 connected to the wellhead of the natural gas well can be connected through the side valve hole 203, the pressure regulating hole 301 and the outlet flange 103, and the natural gas in the natural gas well enters through the inlet flange 101 and the side valve hole 203. into the valve cylinder 201, and into the adjustment cylinder 3 from the pressure regulating hole 301, and into the natural gas pipeline from the outlet flange 103;

When the staff needs to close the natural gas well, the Internet of Things platform 20 controls the remote control motor 12 to rotate in the reverse direction. The remote control motor 12 drives the driving bevel gear 11 and the passive bevel gear 10 to rotate in the reverse direction through the reducer 3, and the passive bevel gear 10 rotates in the reverse direction. When the thread in the screw hole at its axis pushes the push-pull rod 5 to move downward, the push-pull rod 5 drives the valve core cylinder 4 to move downward in the valve cylinder 201 until the valve core cylinder 4 blocks the side valve on the valve cylinder 201 The hole 203 and the pressure regulating hole 301 on the regulating cylinder 3 are sufficient;

When it is necessary to adjust the pressure of the external transmission line, it is only necessary to partially block the pressure regulating hole 301 on the adjustment cylinder 3 by the valve core cylinder 201, and at the same time, the pressure signal sent back to the Internet of Things detection platform 20 by the external transmission pipeline pressure sensor 8 is corrected. .

When the external pipeline is ruptured, the wellhead pressure sensor 7 detects that the pressure is normal, and the external pipeline pressure sensor 8 detects a sudden drop in pressure. At this time, the IoT platform 20 will automatically remote control the motor 12 to rotate in the reverse direction, and the remote control motor 12 will pass through the reducer. 3. Drive the driving bevel gear 11 and the passive bevel gear 10 to rotate in the reverse direction. When the passive bevel gear 10 rotates in the reverse direction, the thread in the screw hole at the shaft center pushes the push-pull rod 5 to move downward, and the push-pull rod 5 drives the spool cylinder 4 Move downward in the valve barrel 201 until the valve core barrel 4 completely blocks the side valve hole 203 on the valve barrel 201 and the pressure regulating hole 301 on the regulating barrel 3, and cuts off the communication between the inlet flange 101 and the outlet flange 103 .

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. Components and structures not described in detail in this embodiment belong to well-known components and common structures or common means in the industry, and will not be described one by one here.

Claims (10)

1. The utility model provides a trinity on-off adjusting device of natural gas well which characterized in that includes:

the detection device comprises a shell (1), wherein an inlet flange (101) and a detection interface (102) are arranged on the side wall of the shell (1), an outlet flange (103) is arranged at one end of the shell (1), an inner interface (104) is arranged at the other end of the shell, the inlet flange (101), the detection interface (102), the outlet flange (103) and the inner interface (104) are communicated with each other, and a plug (6) is connected to the detection interface (102);

the valve body (2) is cylindrical, the lower end of the valve body (2) is a valve cylinder (201), the upper end of the valve body is provided with a sealing sliding hole (202), the side wall of the valve cylinder (201) is provided with a side valve hole (203), the lower end of the valve cylinder (201) is provided with a necking, the valve cylinder (201) extends into and is fixed in the inner port (103) of the shell (1), the side valve hole (203) is communicated with the inlet flange (101) and the inner port of the detection interface (102), and the end part of the valve cylinder (201) is communicated with the inner end of the outlet flange (103);

the lower end of the adjusting cylinder (3) is fixed in a necking at the lower end of the valve cylinder (201), the adjusting cylinder (3) extends into the valve cylinder (201) and forms an annular space with the valve cylinder (201), and a pressure adjusting hole (301) is formed in the side wall of the adjusting cylinder (3);

the outer side wall of the valve core cylinder (4) is in sliding sealing fit with the inner side wall of the valve cylinder (201), the inner side wall of the valve core cylinder is in sliding sealing fit with the outer side wall of the adjusting cylinder (3), a push-pull rod (5) is arranged at the upper end of the valve core cylinder (4), and the push-pull rod (5) penetrates through the sealing slide hole (202) and extends out of the valve body (2);

the remote control action mechanism is arranged at the upper end of the valve body (2) and is in transmission connection with the push-pull rod (5);

the wellhead pressure sensor (7), the wellhead pressure sensor (7) is connected to the plug (6), and a detection probe of the wellhead pressure sensor is communicated with the detection interface (102);

the outer conveying pipeline pressure sensor (8) is fixed on the shell (1), and a detection probe of the outer conveying pipeline pressure sensor is communicated with the inner end of the outlet flange (103).

2. The gas well three-in-one switching regulator as set forth in claim 1 wherein the remote control actuator comprises:

the actuating frame (9) is connected to the upper end of the valve body (2), a driven bevel gear (10) and a driving bevel gear (11) which are meshed with each other are respectively arranged on the actuating frame (9) in a rotating mode, a screw hole is formed in the axis of the driven bevel gear (10), and the front end of the push-pull rod (5) is provided with threads and is in threaded fit with the driven bevel gear (10);

the remote control device comprises a remote control motor (12) and a speed reducer (13), wherein the remote control motor (12) is connected with the speed reducer (13), the remote control motor (12) and the speed reducer (13) are fixed on the action frame (9), and a main shaft of the remote control motor is connected with the drive bevel gear (11).

3. The gas well three-in-one switch adjusting device is characterized in that an anti-rotation plate (14) is arranged on the action frame (9), an anti-rotation hole (15) is formed in the anti-rotation plate (14), a flat key (16) is arranged in the anti-rotation hole (15), a key groove (501) is formed in the surface of the push-pull rod (5), the push-pull rod (5) penetrates through the anti-rotation hole (15), and the flat key (16) extends into the key groove (501).

4. The gas well three-in-one switch adjusting device is characterized in that a manual bevel gear (17) is rotatably arranged on the anti-rotating plate (14), the manual bevel gear (17) is meshed with the driven bevel gear (10), and a hand wheel (18) is connected to one end of the manual bevel gear (17).

5. The three-in-one switching regulator for the natural gas well as the oil well as the gas well as the oil well are characterized in that an annular groove (204) is formed in the side wall of the valve cylinder (201), and the side valve hole (203) is formed in the annular groove (204).

6. The three-in-one switching and adjusting device for the natural gas well is characterized in that a mounting hole is formed in the upper end of the valve core cylinder (4), and the lower end of the push-pull rod (5) extends into the mounting hole and is fixedly connected with the mounting hole through a pin (19).

7. The gas well three-in-one switching regulation device as claimed in claim 6, characterized in that the lower end of the push-pull rod (5) is provided with a balance channel (502), and the balance channel (502) is communicated with the side wall of the push-pull rod (5) extending out of the upper end of the valve core cylinder (4).

8. The gas well three-in-one switching regulator as claimed in claim 1, characterized in that the regulating cylinder (3) is provided with a drain hole (302) on the side wall near the constriction of the lower end of the valve cylinder (201).

9. The gas well three-in-one switching regulator as set forth in claim 1 wherein the lower port and the inner side wall of the valve cylinder (201) are provided with a layer of wear resistant inserts (401).

10. A natural gas well on-off regulation method is implemented by adopting the natural gas well three-in-one on-off regulation device as claimed in any one of claims 1 to 9, and is characterized in that an internet of things platform control remote control action mechanism drives a push-pull rod and a valve core cylinder to move in a valve cylinder of a valve body, the pressure of an export pipeline is regulated by regulating the opening degree of a side valve hole on the valve core cylinder and a pressure regulating hole on a regulating cylinder, a well mouth of a natural gas well is closed and opened by completely plugging or completely releasing the side valve hole and the pressure regulating hole, the pressure in an inlet flange is detected by a well mouth pressure sensor, the pressure in an outlet flange is detected by the export pipeline pressure sensor, when the pressure in the inlet flange is unchanged and the pressure in the outlet flange is suddenly reduced, the internet of things platform control remote control action mechanism drives the push-pull rod and the valve core cylinder to move in the valve cylinder, the valve core cylinder completely blocks the side valve hole and the pressure regulating hole, and the stopping function of the natural gas well is realized.

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