Opening and closing structure of gas production wellhead high-pressure valve

Abstract

The utility model discloses an opening and closing structure of a gas production wellhead high-pressure valve, which belongs to the technical field of gas production wellhead high-pressure valves, and comprises a high-pressure valve body, an operation shell arranged at the top of the high-pressure valve body, a fixed chamber arranged inside the operation shell, a transmission chamber arranged inside the operation shell, and a valve core sleeved inside the high-pressure valve body, the top end of the valve element is fixedly connected with a rotating column, and the top end of the rotating column is movably sleeved with an inner cavity of the fixing chamber and fixedly sleeved with a fourth gear. According to the utility model, the servo motor is used for driving the first gear to rotate, the transmission rod and the third gear are driven to rotate through the transmission between the first gear and the second gear, and the rotating column and the valve core are driven to rotate through the transmission between the third gear and the fourth gear, so that the valve body is automatically opened and closed; and the valve body is directly controlled and remotely controlled through the control panel and the signal receiving electric wire, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of a gas wellhead high-pressure valve, and more specifically to an opening and closing structure of a gas wellhead high-pressure valve. Background Art

[0002] Valves with a pressure of more than 105MPa are commonly used at gas wellheads. Such valves are high-pressure valves. When the high-pressure valve is connected to a pipeline, the fluid pressure in the pipeline is relatively high. When the valve is opened / closed manually, a large force is required to turn the valve.

[0003] After searching, the utility model patent with announcement number CN219975584U discloses a gas wellhead high-pressure valve opening and closing structure, the purpose of which is to solve the technical problem that when there is high-pressure fluid in the pipeline, the opening and closing of the high-pressure valve requires a large force to drive. The structure includes: a connecting plate with a U-shaped cross section, the bottom of the connecting plate is connected to the valve core of the high-pressure valve, and the inner side of the connecting plate has an annular inner tooth; a connecting gear, the connecting gear is meshed with the inner teeth on the inner side of the connecting plate, and the number of teeth of the connecting gear is less than the number of teeth of the inner teeth on the connecting plate; a driving gear, the driving gear is connected to the connecting gear by power, and the number of teeth of the driving gear is less than the number of teeth of the connecting gear; a driving shaft, which is coaxially connected to the driving gear, and the end of the driving shaft has a concave driving groove; wherein the axis of the driving shaft is colinear with the axis of the connecting plate, and the other end of the driving shaft is rotatably connected to the middle of the connecting plate; the structure has the advantage of being able to easily drive the high-pressure valve when the fluid pressure in the pipeline is high.

[0004] However, the above patents still have the following shortcomings: manual labor is required to open the valve, which is not convenient; in addition, after the valve core in the valve is adjusted, it is not convenient to fix the adjusted valve, and the valve core may automatically deviate due to the impact of the fluid. For this reason, we propose an opening and closing structure for a gas wellhead high-pressure valve. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide an opening and closing structure of a high-pressure valve at a gas production wellhead.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A gas wellhead high-pressure valve opening and closing structure, comprising a high-pressure valve body, an operating shell is provided on the top of the high-pressure valve body, a fixed chamber is provided inside the operating shell, a transmission chamber is provided inside the operating shell, a valve core is sleeved inside the high-pressure valve body, a rotating column is fixedly connected to the top of the valve core, the top of the rotating column is movably sleeved to the inner cavity of the fixed chamber and fixedly sleeved with a fourth gear, a plurality of jacks are provided on the side of the top of the rotating column, a fixing mechanism is provided on the side of the operating shell, a control mechanism is provided on the side of the operating shell, a servo motor is fixedly installed on the top surface of the operating shell, the output shaft of the servo motor extends to the inner cavity of the transmission chamber and is fixedly sleeved with a first gear, a transmission rod is rotatably connected to the bottom of the inner cavity of the transmission chamber, a second gear is fixedly sleeved on the top of the transmission rod, the second gear and the first gear are meshed with each other, the bottom end of the transmission rod extends to the inner cavity of the fixed chamber and is fixedly sleeved with a third gear, the third gear and the fourth gear are meshed with each other.

[0008] As a preferred solution of the utility model, the fixing mechanism includes electric push rods fixedly installed on both sides of the operating shell, the output ends of the two electric push rods extend to the inner cavity of the operating shell and are fixedly connected to a movable plate, the ends of the two movable plates are respectively fixedly connected to pins, and the ends of the two pins are respectively movably sleeved into the inner cavity of the socket.

[0009] As a preferred solution of the utility model, the control mechanism includes a control box fixedly connected to the side of the operating shell, a control panel is fixedly installed in the inner cavity of the control box, a battery is provided in the inner cavity of the control box, a signal receiving wire is fixedly installed on the top of the control box, and a box door is hinged on the outer side of the control box.

[0010] As a preferred solution of the utility model, a flow hole is arranged inside the high-pressure valve body, a core hole is opened on the valve core, and the core hole and the flow hole are arranged concentrically.

[0011] As a preferred solution of the utility model, the inner diameter of the insertion hole is equal to the outer diameter of the plug.

[0012] As a preferred solution of the present invention, the inner diameter of the core hole is equal to the inner diameter of the flow hole.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, a servo motor is used to drive the first gear to rotate, and the transmission between the first gear and the second gear is used to drive the transmission rod and the third gear to rotate, and the transmission between the third gear and the fourth gear is used to drive the rotating column and the valve core to rotate, so as to automatically open and close the valve body, and the valve body is directly controlled and remotely controlled through the control panel and the signal receiving wire.

[0015] (2) In the utility model, four insertion holes are provided on the side of the rotating column. When the rotating column and the valve core rotate, the electric push rod is used to drive the moving plate and the plug to move, so that the plug is inserted into the insertion hole to fix the rotating column and the valve core, thereby fixing the valve core after opening and closing, avoiding the problem of possible displacement of the valve core due to the impact of the fluid, and improving its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the control mechanism of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the movable plate of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. High-pressure valve body; 2. Operating shell; 3. Fixed chamber; 4. Transmission chamber; 5. Valve core; 6. Rotating column; 7. Socket; 8. Fixing mechanism; 9. Servo motor; 10. Transmission rod; 11. First gear; 12. Second gear; 13. Third gear; 14. Fourth gear; 15. Control mechanism; 16. Electric push rod; 17. Moving plate; 18. Latch; 19. Control box; 20. Control panel; 21. Battery; 22. Signal receiving wire; 23. Box door; 24. Core hole; 25. Flow hole. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-4 A gas wellhead high-pressure valve opening and closing structure, comprising a high-pressure valve body 1, an operating shell 2 is arranged on the top of the high-pressure valve body 1, a fixed chamber 3 is arranged inside the operating shell 2, a transmission chamber 4 is arranged inside the operating shell 2, a valve core 5 is sleeved inside the high-pressure valve body 1, a rotating column 6 is fixedly connected to the top of the valve core 5, the top of the rotating column 6 is movably sleeved to the inner cavity of the fixed chamber 3 and is fixedly sleeved with a fourth gear 14, a plurality of jacks 7 are opened on the side of the top of the rotating column 6, a fixing mechanism 8 is arranged on the side of the operating shell 2, and the operating shell 1 is sleeved with a valve core 5, a rotating column 6 is fixedly connected to the top of the valve core 5, and a fourth gear 14 is fixedly sleeved on the top of the rotating column 6. 2 is provided with a control mechanism 15, a servo motor 9 is fixedly mounted on the top surface of the operating shell 2, the output shaft of the servo motor 9 extends to the inner cavity of the transmission chamber 4 and is fixedly sleeved with a first gear 11, a transmission rod 10 is rotatably connected to the bottom of the inner cavity of the transmission chamber 4, a second gear 12 is fixedly sleeved on the top of the transmission rod 10, the second gear 12 and the first gear 11 are meshed with each other, the bottom end of the transmission rod 10 extends to the inner cavity of the fixed chamber 3 and is fixedly sleeved with a third gear 13, the third gear 13 and the fourth gear 14 are meshed with each other.

[0027] In this embodiment, the outer diameter of the second gear 12 is larger than the outer diameter of the first gear 11, and the outer diameter of the third gear 13 is smaller than the outer diameter of the fourth gear 14. The rotation speed of the servo motor 9 is decelerated through the transmission of the first gear 11, the second gear 12, the third gear 13 and the fourth gear 14, and the rotating column 6 and the valve core 5 are driven to rotate at the same time. In addition, the multiple holes 7 are distributed at ninety degrees.

[0028] For details, please refer to Figure 1 , Figure 2 and Figure 4 The fixing mechanism 8 includes electric push rods 16 fixedly installed on both sides of the operating shell 2. The output ends of the two electric push rods 16 extend to the inner cavity of the operating shell 2 and are fixedly connected to a moving plate 17. The ends of the two moving plates 17 are respectively fixedly connected to pins 18, and the ends of the two pins 18 are respectively movably sleeved into the inner cavity of the socket 7.

[0029] In this embodiment, the electric push rod 16 is used to drive the latch 18 to move, so that the latch 18 is inserted into the insertion hole 7 to fix the rotating column 6 and the valve core 5.

[0030] For details, please refer to Figure 1 and Figure 3 The control mechanism 15 includes a control box 19 fixedly connected to the side of the operating shell 2, a control panel 20 is fixedly installed in the inner cavity of the control box 19, a battery 21 is provided in the inner cavity of the control box 19, a signal receiving wire 22 is fixedly installed on the top of the control box 19, and a box door 23 is hinged on the outer side of the control box 19.

[0031] In this embodiment, the battery 21 is used to power the control panel 20, the signal receiving wire 22, the servo motor 9 and the electric push rod 16, the control panel 20 is used to control the servo motor 9 and the electric push rod 16, and the signal receiving wire 22 is used to receive remote signals.

[0032] For details, please refer to Figure 2 A flow hole 25 is provided inside the high-pressure valve body 1, and a core hole 24 is opened on the valve core 5. The core hole 24 and the flow hole 25 are arranged concentrically.

[0033] For details, please refer to Figure 2 and Figure 4 , the inner diameter of the insertion hole 7 and the outer diameter of the latch pin 18 are equal.

[0034] In this embodiment, the stability of the end of the plug pin 18 inserted into the insertion hole 7 is ensured.

[0035] For details, please refer to Figure 2 , the inner diameter of the core hole 24 is equal to the inner diameter of the flow hole 25.

[0036] In this embodiment, the smoothness of gas flow in the flow hole 25 and the core hole 24 is ensured.

[0037] Working principle: When in use, first install the high-pressure valve body 1 on the wellhead gas extraction pipeline. When the high-pressure valve needs to be opened, start the electric push rod 16 to drive the pin 18 to disengage from the inner cavity of the socket 7, remotely send a control signal to the signal receiving wire 22, or directly open the box door 23 to operate the control panel 20, and use the control panel 20 to control the servo motor 9 to drive the first gear 11 to rotate, and drive the second gear 12, the transmission rod 10 and the third gear 13 to rotate synchronously through the meshing transmission between the first gear 11 and the second gear 12, and use the transmission between the third gear 13 and the fourth gear 14 to drive the rotating column 6 and the valve core 5 to rotate ninety degrees. At this time, the flow hole 25 in the high-pressure valve body 1 and the core hole 24 on the valve core 5 are aligned. At this time, start the electric push rod 16 again to drive the pin 18 to be inserted into the socket 7, so as to fix the valve core 5 and the rotating column 6 at this time;

[0038] When the high-pressure valve needs to be closed, the electric push rod 16 is started to drive the pin 18 to disengage from the socket 7, and the servo motor 9, the first gear 11, the transmission rod 10, the second gear 12, the third gear 13 and the fourth gear 14 cooperate to drive the valve core 5 to reverse 90 degrees, so that the core hole 24 and the flow hole 25 are perpendicular, so that the gas no longer flows in the flow hole 25 and the core hole 24.

[0039] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. An opening and closing structure of a high-pressure valve at a gas production wellhead, comprising a high-pressure valve body (1), characterized in that: An operating shell (2) is arranged on the top of the high-pressure valve body (1), a fixed chamber (3) is arranged inside the operating shell (2), a transmission chamber (4) is arranged inside the operating shell (2), a valve core (5) is sleeved inside the high-pressure valve body (1), a rotating column (6) is fixedly connected to the top of the valve core (5), the top of the rotating column (6) is movably sleeved to the inner cavity of the fixed chamber (3) and is fixedly sleeved with a fourth gear (14), a plurality of insertion holes (7) are opened on the side of the top of the rotating column (6), a fixing mechanism (8) is arranged on the side of the operating shell (2), and a control mechanism (14) is arranged on the side of the operating shell (2). The mechanism (15) comprises a servo motor (9) fixedly mounted on the top surface of the operating shell (2), the output shaft of the servo motor (9) extending to the inner cavity of the transmission chamber (4) and fixedly sleeved with a first gear (11), a transmission rod (10) rotatably connected to the bottom of the inner cavity of the transmission chamber (4), a second gear (12) fixedly sleeved on the top of the transmission rod (10), the second gear (12) and the first gear (11) meshing with each other, the bottom end of the transmission rod (10) extending to the inner cavity of the fixed chamber (3) and fixedly sleeved with a third gear (13), the third gear (13) and the fourth gear (14) meshing with each other.

2. The opening and closing structure of a gas wellhead high-pressure valve according to claim 1, characterized in that: The fixing mechanism (8) comprises electric push rods (16) fixedly mounted on both sides of the operating shell (2), the output ends of the two electric push rods (16) both extending into the inner cavity of the operating shell (2) and fixedly connected to a movable plate (17), the ends of the two movable plates (17) respectively fixedly connected to a latch (18), and the ends of the two latches (18) respectively movably sleeved into the inner cavity of the jack (7).

3. The opening and closing structure of a gas wellhead high-pressure valve according to claim 2, characterized in that: The control mechanism (15) comprises a control box (19) fixedly connected to the side of the operating shell (2), a control panel (20) fixedly installed in the inner cavity of the control box (19), a storage battery (21) arranged in the inner cavity of the control box (19), a signal receiving wire (22) fixedly installed on the top of the control box (19), and a box door (23) hinged on the outer side of the control box (19).

4. The opening and closing structure of a gas wellhead high-pressure valve according to claim 1, characterized in that: The high-pressure valve body (1) is provided with a flow hole (25) inside, the valve core (5) is provided with a core hole (24), and the core hole (24) and the flow hole (25) are arranged concentrically.

5. The opening and closing structure of a gas wellhead high-pressure valve according to claim 2, characterized in that: The inner diameter of the insertion hole (7) is equal to the outer diameter of the latch pin (18).

6. The opening and closing structure of a gas wellhead high-pressure valve according to claim 4, characterized in that: The inner diameter of the core hole (24) is equal to the inner diameter of the flow hole (25).

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