Gas production wellhead device with pressure detection function and high pressure resistance

Abstract

The invention relates to the technical field of gas production wellhead equipment, in particular to a high-pressure-resistance gas production wellhead device with a pressure detection function, which is characterized in that a valve rod is arranged in a wellhead valve body, a positioning sleeve is screwed on the surface of the valve rod, an auxiliary plate is arranged on the side surface of the positioning sleeve, a hand wheel is arranged at one end of the auxiliary plate, and an auxiliary rod is arranged on the side surface of a limiting plate; a positioning clamping plate is arranged in the limiting plate, a positioning opening is formed in the surface of the mounting plate, and a positioning block is arranged at the bottom of the positioning clamping plate; the hand wheel has the beneficial effects that firstly, the limiting plate can be pulled to enable the auxiliary rod to be pulled out of the containing groove, then the positioning clamping plate in the limiting plate is rotated, the positioning block arranged at the bottom of the positioning clamping plate is inserted into the positioning opening, and therefore the pulled-out auxiliary rod can be fixed, and then the hand wheel can be conveniently rotated by means of the extension effect of the auxiliary rod; therefore, the problem that the manual gate valve is difficult to adjust due to the fact that the internal pressure of the wellhead valve body is too large and the force required for rotating the hand wheel is increased is solved.

Description

Technical Field

[0001] The invention relates to the field of gas production wellhead equipment, in particular to a high-pressure-resistant gas production wellhead device with a pressure detection function. Background Art

[0002] Gas wellhead devices are important equipment used to control and manage the gas flow at the wellhead during natural gas extraction. Such devices are usually installed at the wellhead of oil and gas wells to control and regulate the flow of natural gas, measure wellhead parameters (such as pressure, temperature, etc.), and prevent accidents such as blowouts.

[0003] China Patent Network CN216277837U discloses a 175MPa ultra-high pressure fracturing wellhead device, including a fracturing tubing head, a tubing hanger is arranged in the fracturing tubing head, a pair of first manual gate valves are arranged on both sides of the fracturing tubing head, a threaded flange is arranged at the end of the first manual gate valve, and a threaded plug is arranged at the end of the threaded flange. This 175MPa ultra-high pressure fracturing wellhead device has an ultra-high pressure resistance of 175MPa and can be used stably for a long time under ultra-high pressure, multi-stage, high sand content, and acid-containing fracturing conditions.

[0004] However, in the above technical solution, when the manual gate valve is adjusted, it is necessary to hold the handwheel of the manual gate valve by hand to adjust it. When the pressure is too high, the force required to turn the handwheel increases accordingly, which makes the manual gate valve difficult to adjust. For this reason, the present invention proposes a high-pressure-resistant gas wellhead device with a pressure detection function to solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide a high pressure-resistant gas production wellhead device with a pressure detection function to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a high-pressure-resistant gas wellhead device with a pressure detection function, the high-pressure-resistant gas wellhead device with a pressure detection function comprising: a wellhead valve body, a valve stem is arranged in the wellhead valve body, a positioning sleeve is screwed on the surface of the valve stem, an auxiliary plate is arranged on the side of the positioning sleeve, a hand wheel is arranged at one end of the auxiliary plate, and storage grooves are provided on the surfaces of the auxiliary plate and the hand wheel;

[0007] A traction spring is provided with a limit plate at one end of the traction spring, an auxiliary rod is provided on the side of the limit plate, a positioning card plate is provided inside the limit plate, a mounting plate is provided on the upper surface of the storage groove, a positioning port is opened on the surface of the mounting plate, and a positioning block is provided at the bottom of the positioning card plate.

[0008] Preferably, a positioning groove is provided on the end face of the valve stem, and the positioning groove has a polygonal cylindrical structure as a whole. The positioning sleeve can be screwed on the end face of the valve stem. A threaded groove is provided on the surface of the positioning sleeve, and a limiting rod is screwed in the threaded groove. A through hole is provided on the surface of the positioning sleeve, and there are two groups of threaded grooves. The two groups of threaded grooves are symmetrically distributed about the through hole provided on the surface of the positioning sleeve.

[0009] Preferably, the surface of the limit rod is provided with a limit spring and a lifting plate, a base plate is provided at one end of the lifting plate, a fixing rod is provided at the bottom of the base plate, and the fixing rod is a polygonal column structure as a whole. The fixing rod can be inserted into the positioning groove through the through hole opened on the surface of the positioning sleeve, and the lifting plate can move up and down along the limit rod.

[0010] Preferably, one end of the limit rod is sleeved with a bearing, one end of the limit rod is fixedly connected to the inner ring surface of the bearing, a base is provided on the surface of the bearing, the base is a circular plate structure, one end of the limit spring is fixedly connected to the surface of the lifting plate, the other end of the limit spring is fixedly connected to the surface of the bearing, and two groups of lifting plates are provided, and the two groups of lifting plates are symmetrically distributed about the bottom plate.

[0011] Preferably, one end of the traction spring is fixedly connected to the end face of the storage groove, and the other end of the traction spring is fixedly connected to the side face of the limit plate. A sealing plate is provided at one end of the auxiliary rod, and the sealing plate is an arc-shaped plate structure. The sealing plate can cover the end face of the storage groove, and the auxiliary rod can be stored in the storage groove.

[0012] Preferably, the mounting plate is fixedly connected to the upper surface of the storage slot, the mounting plate as a whole is a square plate-shaped structure, a movable opening is opened on the surface of the mounting plate, a traction rod is arranged on the surface of the mounting plate, the positioning opening is a square plate-shaped structure, the positioning opening is larger than the end face of the positioning block, and the positioning block can be inserted into the positioning opening.

[0013] Preferably, the limit plate is fixedly connected to the end face of the auxiliary rod, the limit plate is inserted into the moving opening, the limit plate can be displaced along the moving opening, a rotating rod is provided in the limit plate, the positioning clamp is sleeved on the rotating rod, and the positioning clamp can rotate around the rotating rod.

[0014] Preferably, the positioning block is a square plate-shaped structure, a rubber ring is sleeved on the side of the positioning block, the rubber ring is glued to the side of the positioning block, a corrugated plate is arranged in the movable opening, the corrugated plate can be compressed and folded, the corrugated plate can cover the movable opening, a traction ring is arranged on the side of the corrugated plate, the traction ring can be sleeved on the traction rod, two groups of traction rings are arranged, and the two groups of traction rings are symmetrically distributed about the corrugated plate.

[0015] Preferably, the auxiliary plate is in a square plate-like structure, and multiple groups of auxiliary plates are provided. The multiple groups of auxiliary plates are regularly arranged in a circle with respect to the positioning sleeve, and the storage groove is in a square plate-like structure as a whole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The high-pressure-resistant gas wellhead device with a pressure detection function proposed in the present invention can, when it is necessary to turn the hand wheel during use, first pull the limit plate to pull the auxiliary rod out of the storage groove, and then rotate the positioning clamp in the limit plate to insert the positioning block provided at the bottom of the positioning clamp into the positioning port, so that the pulled-out auxiliary rod can be fixed, and then the hand wheel can be turned conveniently with the help of the extension effect of the auxiliary rod, thereby avoiding the problem of excessive pressure inside the wellhead valve body, which causes the force required to turn the hand wheel to increase, resulting in difficulty in adjusting the manual gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a side view of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention when the structure is tilted;

[0021] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 This is a schematic diagram of the auxiliary rod structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the hand wheel structure of the present invention;

[0024] Figure 7 This is a side view of the hand wheel structure of the present invention;

[0025] Figure 8 for Figure 7 The enlarged structural diagram at B in the middle;

[0026] Fig. 9 for Figure 7 The enlarged structural diagram at C in the middle;

[0027] Fig.10 A schematic diagram of the structure of the present invention after a set of hand wheels are removed;

[0028] Fig.11 This is a side view of the auxiliary rod of the structure of the present invention;

[0029] Fig.12 for Fig.11 Enlarged structural diagram at D in the middle.

[0030] In the figure: 1. Wellhead valve body; 2. Valve stem; 3. Positioning sleeve; 4. Auxiliary plate; 5. Hand wheel; 6. Storage groove; 7. Traction spring; 8. Limit plate; 9. Auxiliary rod; 10. Positioning card plate; 11. Mounting plate;

[0031] 12. Positioning port; 13. Positioning block; 14. Positioning slot; 15. Threaded slot; 16. Limiting rod; 17. Limiting spring; 18. Lifting plate; 19. Bottom plate; 20. Fixed rod; 21. Bearing; 22. Base; 23. Sealing plate; 24. Moving port; 25. Drawbar; 26. Rotating rod; 27. Rubber ring; 28. Corrugated plate;

[0032] 29. Traction ring. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-Figure 12 The present invention provides a technical solution: a high-pressure-resistant gas wellhead device with a pressure detection function, the high-pressure-resistant gas wellhead device with a pressure detection function comprising: a wellhead valve body 1, a valve stem 2 is arranged in the wellhead valve body 1, a positioning sleeve 3 is screwed on the surface of the valve stem 2, an auxiliary plate 4 is arranged on the side of the positioning sleeve 3, a hand wheel 5 is arranged at one end of the auxiliary plate 4, and a receiving groove 6 is opened on the surface of the auxiliary plate 4 and the hand wheel 5;

[0035] A traction spring 7, a limit plate 8 is arranged at one end of the traction spring 7, an auxiliary rod 9 is arranged on the side of the limit plate 8, a positioning card plate 10 is arranged inside the limit plate 8, a mounting plate 11 is arranged on the upper surface of the storage groove 6, a positioning opening 12 is opened on the surface of the mounting plate 11, and a positioning block 13 is arranged at the bottom of the positioning card plate 10;

[0036] When the hand wheel 5 needs to be turned during use, the limiting plate 8 can be pulled first to pull the auxiliary rod 9 out of the receiving groove 6, and then the positioning clamp 10 in the limiting plate 8 can be rotated to insert the positioning block 13 provided at the bottom of the positioning clamp 10 into the positioning port 12 so that the pulled-out auxiliary rod 9 can be fixed, and then the hand wheel 5 can be conveniently turned with the help of the extension effect of the auxiliary rod 9, thereby avoiding the problem that the internal pressure of the wellhead valve body 1 is too high, which causes the force required to turn the hand wheel 5 to increase, resulting in the problem of difficulty in adjusting the manual gate valve.

[0037] Embodiment 2: On the basis of embodiment 1, in order to facilitate the rotation of the valve stem 2 by the hand wheel 5, a positioning sleeve 3 is provided, a positioning groove 14 is provided on the end face of the valve stem 2, and the positioning groove 14 is a polygonal column structure as a whole. The positioning sleeve 3 can be screwed on the end face of the valve stem 2, and a threaded groove 15 is provided on the surface of the positioning sleeve 3. A limiting rod 16 is screwed in the threaded groove 15. A through hole is provided on the surface of the positioning sleeve 3. There are two groups of threaded grooves 15. The two groups of threaded grooves 15 are symmetrically distributed about the through holes provided on the surface of the positioning sleeve 3. A limiting spring 17 and a lifting plate 18 are provided on the surface of the limiting rod 16. A bottom plate 19 is provided at one end of the lifting plate 18, and a fixing rod 20 is provided at the bottom of the bottom plate 19. The fixing rod 20 is a polygonal column structure as a whole. The fixing rod 20 can pass through the through hole provided on the surface of the positioning sleeve 3 and be inserted into the positioning groove 14. The lifting plate 18 can move up and down along the limiting rod 16;

[0038] When in use, first screw the positioning sleeve 3 onto the valve stem 2, and then insert the fixing rod 20 into the positioning groove 14, so as to avoid fixing the positioning sleeve 3 and avoiding the problem that the positioning sleeve 3 continues to rotate along the valve stem 2 when the hand wheel 5 is turned. Then, the valve stem 2 can be easily driven to rotate by turning the hand wheel 5.

[0039] In order to facilitate the removal of the positioning sleeve 3, a limit rod 16 is provided, one end of the limit rod 16 is sleeved with a bearing 21, one end of the limit rod 16 is fixedly connected to the inner ring surface of the bearing 21, a base 22 is provided on the surface of the bearing 21, and the base 22 is a circular plate-shaped structure, one end of the limit spring 17 is fixedly connected to the surface of the lifting plate 18, and the other end of the limit spring 17 is fixedly connected to the surface of the bearing 21, and the lifting plate 18 is provided with two groups, and the two groups of lifting plates 18 are symmetrically distributed about the bottom plate 19;

[0040] When it is necessary to remove the positioning sleeve 3 from the valve stem 2 during use, the bottom plate 19 can be directly pulled to disengage the fixing rod 20 from the positioning groove 14, so that the fixing rod 20 can lose its limiting effect on the positioning sleeve 3, and the positioning sleeve 3 can be conveniently removed from the valve stem 2. The setting of the limiting spring 17 can prevent the fixing rod 20 from being disengaged from the positioning groove 14 during use by pressing the lifting plate 18 by the limiting spring 17. When it is necessary to remove the fixing rod 20, the limiting rod 16 can be disengaged from the threaded groove 15 by rotating the base 22. The setting of the bearing 21 can prevent the limiting spring 17 from rotating when the limiting rod 16 is rotated, which may cause the limiting spring 17 to twist. The setting of the bearing 21 can facilitate the problem of rotating the limiting rod 16 so that the limiting spring 17 does not rotate.

[0041] Embodiment 3: On the basis of embodiment 2, in order to facilitate the rotation of the hand wheel 5, an auxiliary rod 9 is provided, one end of the traction spring 7 is fixedly connected to the end face of the storage groove 6, and the other end of the traction spring 7 is fixedly connected to the side of the limit plate 8. A sealing plate 23 is provided at one end of the auxiliary rod 9. The sealing plate 23 is an arc-shaped plate structure, and the sealing plate 23 can cover the end face of the storage groove 6. The auxiliary rod 9 can be stored in the storage groove 6, and the limit plate 8 is fixedly connected to the end face of the auxiliary rod 9. The limit plate 8 is inserted into the moving opening 24, and the limit plate 8 can be displaced along the moving opening 24. A rotating rod 26 is provided in the limiting plate 8, and the positioning card plate 10 is sleeved on the rotating rod 26, and the positioning card plate 10 can rotate around the rotating rod 26;

[0042] When the hand wheel 5 needs to be rotated during use, the limiting plate 8 can be pulled to draw the auxiliary rod 9 out of the receiving groove 6, and then the positioning card plate 10 can be rotated in cooperation with the rotating rod 26 so that the positioning block 13 set at the bottom of the positioning card plate 10 is inserted into the positioning port 12 to limit the drawn auxiliary rod 9, and then the hand wheel 5 can be conveniently rotated with the help of the auxiliary rod 9. When not in use, the positioning block 13 can be drawn out of the positioning port 12, and then the pulling force of the traction spring 7 can be used to store the auxiliary rod 9 in the receiving groove 6, and the sealing plate 23 can cover the end surface of the receiving groove 6.

[0043] In order to facilitate the displacement of the auxiliary rod 9, a mounting plate 11 is provided, the mounting plate 11 is fixedly connected to the upper surface of the storage groove 6, the mounting plate 11 is a square plate-shaped structure as a whole, a moving opening 24 is opened on the surface of the mounting plate 11, a traction rod 25 is provided on the surface of the mounting plate 11, the positioning opening 12 is a square plate-shaped structure, the positioning opening 12 is larger than the end face of the positioning block 13, the positioning block 13 can be inserted into the positioning opening 12, the positioning block 13 is a square plate-shaped structure, and a rubber ring 27 is provided on the side of the positioning block 13, and the rubber ring 27 is glued to the positioning block 13, a corrugated plate 28 is arranged in the moving opening 24, the corrugated plate 28 can be compressed and folded, the corrugated plate 28 can cover the moving opening 24, a traction ring 29 is arranged on the side of the corrugated plate 28, the traction ring 29 can be sleeved on the traction rod 25, two groups of traction rings 29 are arranged, and the two groups of traction rings 29 are symmetrically distributed about the corrugated plate 28, the auxiliary plate 4 is a square plate structure, the auxiliary plate 4 is provided with multiple groups, and the multiple groups of auxiliary plates 4 are regularly arranged in a circle about the positioning sleeve 3, and the storage groove 6 is a square plate structure as a whole;

[0044] When in use, the limiting plate 8 is inserted into the moving opening 24. On the one hand, it can guide and limit the displacement of the auxiliary rod 9 to prevent the auxiliary rod 9 from escaping from the storage groove 6. On the other hand, it is also convenient for the positioning block 13 set at the bottom of the positioning card plate 10 to be inserted into the positioning opening 12. The surface of the positioning block 13 is sleeved with a rubber ring 27 to increase the friction between the positioning block 13 and the side of the positioning opening 12 to prevent the positioning block 13 from arbitrarily escaping from the positioning opening 12. Then the top of the moving opening 24 is covered with the corrugated plate 28. The limiting plate 8 can be reset to the bottom of the corrugated plate 28. One end of the corrugated plate 28 can be fixed by the traction ring 29 in cooperation with the traction rod 25. The height of the corrugated plate 28 is higher than the height of the limiting plate 8. The setting of the corrugated plate 28 will not affect the displacement of the limiting plate 8.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high pressure-resistant gas wellhead device with a pressure detection function, characterized in that: The high-pressure-resistant gas production wellhead device with a pressure detection function comprises: a wellhead valve body (1), a valve stem (2) is arranged inside the wellhead valve body (1), a positioning sleeve (3) is screwed on the surface of the valve stem (2), an auxiliary plate (4) is arranged on the side of the positioning sleeve (3), a hand wheel (5) is arranged at one end of the auxiliary plate (4), and a receiving groove (6) is provided on the surface of the auxiliary plate (4) and the hand wheel (5); A traction spring (7) is provided at one end of the traction spring (7), an auxiliary rod (9) is provided on the side of the traction spring (8), a positioning clamping plate (10) is provided inside the traction spring (8), a mounting plate (11) is provided on the upper surface of the storage groove (6), a positioning opening (12) is provided on the surface of the mounting plate (11), and a positioning block (13) is provided at the bottom of the positioning clamping plate (10).

2. A high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: The end face of the valve stem (2) is provided with a positioning groove (14), which is in the form of a polygonal column structure. The positioning sleeve (3) can be screwed onto the end face of the valve stem (2). The surface of the positioning sleeve (3) is provided with a threaded groove (15), a limiting rod (16) is screwed into the threaded groove (15), and the surface of the positioning sleeve (3) is provided with a through hole. The threaded groove (15) is provided with two groups, and the two groups of threaded grooves (15) are symmetrically distributed with respect to the through hole provided on the surface of the positioning sleeve (3).

3. A high pressure-resistant gas wellhead device with pressure detection function according to claim 2, characterized in that: The surface of the limiting rod (16) is sleeved with a limiting spring (17) and a lifting plate (18); one end of the lifting plate (18) is provided with a bottom plate (19); a fixing rod (20) is provided at the bottom of the bottom plate (19); the fixing rod (20) is in a polygonal column structure as a whole; the fixing rod (20) can pass through a through hole provided on the surface of the positioning sleeve (3) and be inserted into the positioning groove (14); the lifting plate (18) can move up and down along the limiting rod (16).

4. A high pressure-resistant gas wellhead device with pressure detection function according to claim 3, characterized in that: A bearing (21) is sleeved on one end of the limit rod (16), and one end of the limit rod (16) is fixedly connected to the inner ring surface of the bearing (21). A base (22) is provided on the surface of the bearing (21), and the base (22) is in a circular plate-like structure. One end of the limit spring (17) is fixedly connected to the surface of the lifting plate (18), and the other end of the limit spring (17) is fixedly connected to the surface of the bearing (21). The lifting plates (18) are provided in two groups, and the two groups of lifting plates (18) are symmetrically distributed with respect to the bottom plate (19).

5. The high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: One end of the traction spring (7) is fixedly connected to the end surface of the storage groove (6), and the other end of the traction spring (7) is fixedly connected to the side surface of the limit plate (8). A sealing plate (23) is provided at one end of the auxiliary rod (9). The sealing plate (23) is an arc-shaped plate structure. The sealing plate (23) can cover the end surface of the storage groove (6), and the auxiliary rod (9) can be stored in the storage groove (6).

6. The high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: The mounting plate (11) is fixedly connected to the upper surface of the storage groove (6); the mounting plate (11) is in a square plate-shaped structure as a whole; a moving opening (24) is provided on the surface of the mounting plate (11); a traction rod (25) is provided on the surface of the mounting plate (11); the positioning opening (12) is in a square plate-shaped structure; the positioning opening (12) is larger than the end surface of the positioning block (13); and the positioning block (13) can be inserted into the positioning opening (12).

7. The high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: The limit plate (8) is fixedly connected to the end surface of the auxiliary rod (9), the limit plate (8) is inserted into the moving opening (24), the limit plate (8) can be displaced along the moving opening (24), a rotating rod (26) is arranged in the limit plate (8), the positioning clamping plate (10) is sleeved on the rotating rod (26), and the positioning clamping plate (10) can rotate around the rotating rod (26).

8. The high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: The positioning block (13) is in a square plate-like structure. A rubber ring (27) is sleeved on the side of the positioning block (13). The rubber ring (27) is glued to the side of the positioning block (13). A corrugated plate (28) is arranged in the moving opening (24). The corrugated plate (28) can be compressed and folded. The corrugated plate (28) can cover the moving opening (24). A traction ring (29) is arranged on the side of the corrugated plate (28). The traction ring (29) can be sleeved on the traction rod (25). Two groups of traction rings (29) are arranged. The two groups of traction rings (29) are symmetrically distributed about the corrugated plate (28).

9. The high pressure-resistant gas wellhead device with pressure detection function according to claim 1, characterized in that: The auxiliary plate (4) is in a square plate-like structure. The auxiliary plates (4) are provided in multiple groups. The multiple groups of auxiliary plates (4) are regularly arranged in a circle with respect to the positioning sleeve (3). The receiving groove (6) is in a square plate-like structure as a whole.

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