Wellhead device with leak-proof function

Abstract

The utility model discloses a wellhead device with a leak-proof function, which comprises a wellhead structure, a cooling anti-cracking component is embedded on the wellhead structure, the wellhead structure is communicated with a pressure relief structure, the wellhead structure comprises an oil pipe, the oil pipe is communicated with a blowout preventer body through a first leak-proof component, and the blowout preventer body is communicated with a casing head through a second leak-proof component. The first anti-leakage assembly comprises a first flange plate, a second flange plate is detachably installed on the first flange plate, a first sealing ring and a second sealing ring are embedded in the first flange plate and the second flange plate, and the first sealing ring is located between the second sealing rings. According to the wellhead device with the anti-leakage function, the double-layer sealing and anti-leakage effects are achieved through the arrangement of a first flange plate, a second flange plate, a first sealing ring and a second sealing ring, and an alarm is arranged to remind an operator in time when leakage occurs; and through the arrangement of the liquid inlet pipe, the liquid guide pipe and the heat exchange liquid discharge pipe, the cooling and anti-cracking effects on the interior of the wellhead device are achieved.

Description

Technical Field

[0001] This utility model relates to the field of wellhead device technology, specifically a wellhead device with anti-leakage function. Background Technology

[0002] Wellhead equipment plays a vital role in the oil and gas industry, connecting underground reservoirs with surface facilities to ensure the smooth extraction of resources. This complex system plays a key role in drilling, completion, and production processes. Existing wellhead equipment is prone to leakage during use, which, if not addressed promptly, can easily lead to resource waste. Furthermore, excessive internal pressure in existing wellhead equipment can cause pipeline cracks, resulting in unnecessary losses. Utility Model Content

[0003] The purpose of this utility model is to provide a wellhead device with anti-leakage function to solve the problems mentioned in the background art, such as leakage during use of existing wellhead devices, which can easily lead to resource waste if not dealt with in time, and the pipeline is prone to cracking when the internal pressure of existing wellhead devices is too high, causing unnecessary losses.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a wellhead device with anti-leakage function, comprising a wellhead structure, a cooling and anti-cracking component embedded in the wellhead structure, the wellhead structure being connected to a pressure relief structure, the wellhead structure comprising an oil pipe, the oil pipe being connected to a blowout preventer body through a first anti-leakage component, and the blowout preventer body being connected to a casing head through a second anti-leakage component;

[0005] The first leak-proof assembly includes a first flange, a second flange is detached and installed on the first flange, and a first sealing ring and a second sealing ring are embedded in the second flange and the first flange, with the first sealing ring located between the second sealing rings;

[0006] The alarm components include an oil leak detector, with an alarm installed on the underside of the oil leak detector.

[0007] Preferably, the cooling and crack prevention component includes an inlet pipe and a liquid guide pipe connecting the inlet pipe and the outlet pipe.

[0008] By adopting the above technical solution, the cooling and crack prevention components are installed to achieve the cooling effect.

[0009] Preferably, the pressure relief structure includes a pressure relief pipe, and an auxiliary sealing component and a limiting component are fixed inside the pressure relief pipe, with the limiting component located to the right of the auxiliary sealing component.

[0010] Preferably, the auxiliary sealing assembly includes a sealing ring, a fixing plate is fixed on the sealing ring, a rotating rod is rotatably connected between the fixing plates, and a sealing cover is fixed on the lower side of the rotating rod.

[0011] By adopting the above technical solution, an auxiliary sealing component is set up to achieve an auxiliary sealing effect.

[0012] Preferably, the limiting component includes a connecting plate, an electric telescopic rod is fixed to the left side of the connecting plate, a limiting plate is fixed to the telescopic end of the electric telescopic rod, and a pressure sensor is embedded in the limiting plate.

[0013] By adopting the above technical solution, a limiting component is set to assist in limiting the sealing cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the wellhead device with anti-leakage function

[0015] (1) It is equipped with a first anti-leakage component, an alarm component and a cooling and crack prevention component. The first flange, the second flange, the first sealing ring and the second sealing ring are set to achieve double-layer sealing and anti-leakage. The alarm is set to remind the operators in time when leakage occurs. The liquid inlet pipe, the liquid guide pipe and the heat exchange liquid outlet pipe are set to cool down and prevent cracking inside the wellhead device.

[0016] (2) A pressure relief structure is provided. When the pressure inside the wellhead device is too high, the limit plate separates from the sealing cover, and the high-pressure fluid pushes open the sealing cover, thereby relieving the pressure inside the wellhead device and preventing the tubing from cracking and causing unnecessary losses. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the pressure relief structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the limiting component of this utility model distributed on the auxiliary sealing component.

[0021] In the diagram: 1. Wellhead structure; 11. Tubing; 12. First leak prevention component; 121. First flange; 122. Second flange; 123. First sealing ring; 124. Second sealing ring; 13. Blowout preventer body; 14. Alarm component; 141. Oil leak detector; 142. Alarm; 15. Second leak prevention component; 16. Casing head; 2. Cooling and crack prevention component; 21. Inlet pipe; 22. Guide pipe; 23. Drain pipe; 3. Pressure relief structure; 31. Pressure relief pipe; 32. Auxiliary sealing component; 321. Sealing ring; 322. Fixing plate; 323. Rotating rod; 324. Sealing cover; 33. Limiting component; 331. Connecting plate; 332. Electric telescopic rod; 333. Limiting plate; 334. Pressure sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a wellhead device with anti-leakage function, such as... Figure 1 and Figure 2 As shown, the wellhead structure 1 includes a tubing 11. The tubing 11 is connected to the blowout preventer body 13 through a first leak prevention component 12. The blowout preventer body 13 is connected to the casing head 16 through a second leak prevention component 15. The first leak prevention component 12 includes a first flange 121. A second flange 122 is installed on the first flange 121. A first sealing ring 123 and a second sealing ring 124 are embedded in the second flange 122 and the first flange 121. The first sealing ring 123 is located between the second sealing rings 124. The alarm component 14 includes an oil leak detector 141. An alarm 142 is provided on the lower side of the oil leak detector 141.

[0024] Among them, a control device for controlling the overall equipment is fixed on the blowout preventer body 13, and the first leak prevention component 12 and the second leak prevention component 15 have the same structure.

[0025] Specifically, at least six sets of threaded holes are provided on both the first flange 121 and the second flange 122. The six sets of threaded holes are evenly distributed on the first flange 121 and the second flange 122. The first flange 121 and the second flange 122 are disassembled and installed by bolts.

[0026] Furthermore, the alarm 142 is an audible and visual alarm that quickly alerts the workers when the oil leak detector 141 detects an oil leak.

[0027] In the above scheme, the first flange 121 fixed on the oil pipe 11 is attached to the second flange 122 fixed on the upper side of the blowout preventer body 13. The first sealing ring 123 and the second sealing ring 124 set between the first flange 121 and the second flange 122 are sealed in sequence. The double seal plays a better role in preventing leakage. Similarly, the second flange 122 on the lower side of the blowout preventer body 13 is attached to the first flange 121 on the sleeve head 16 and threaded to fix it. It also plays a role in preventing leakage with a double seal. When the oil leak detector 141 detects an oil leak, the alarm 142 will sound an audible and visual alarm, and the operators will deal with it in time to avoid unnecessary losses.

[0028] like Figure 1 and Figure 2 As shown, a cooling and crack prevention component 2 is embedded in the wellhead structure 1. The cooling and crack prevention component 2 includes an inlet pipe 21 and a liquid guide pipe 22 connecting the inlet pipe 21 and the outlet pipe 23.

[0029] The blowout preventer body 13 is inlaid with a liquid guide tube 22 in a serpentine pattern to ensure the cooling effect.

[0030] Specifically, the fluid that has been heated in the drain pipe 23 is connected to the cooling system and cooled by the cooling system. The cooled fluid is then circulated back into the inlet pipe 21 for reuse, thus avoiding waste of resources.

[0031] In the above scheme, the cooling fluid enters the liquid guide pipe 22 through the liquid inlet pipe 21, and is cooled by the fluid in the liquid guide pipe 22. The cooled fluid is discharged through the liquid outlet pipe 23.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the wellhead structure 1 is connected to the pressure relief structure 3. The pressure relief structure 3 includes a pressure relief pipe 31. An auxiliary sealing assembly 32 and a limiting assembly 33 are fixed inside the pressure relief pipe 31. The limiting assembly 33 is located on the right side of the auxiliary sealing assembly 32. The auxiliary sealing assembly 32 includes a sealing ring 321. A fixing plate 322 is fixed on the sealing ring 321. A rotating rod 323 is rotatably connected between the fixing plates 322. A sealing cover 324 is fixed on the lower side of the rotating rod 323. The limiting assembly 33 includes a connecting plate 331. An electric telescopic rod 332 is fixed on the left side of the connecting plate 331. A limiting plate 333 is fixed at the telescopic end of the electric telescopic rod 332. A pressure sensor 334 is embedded on the limiting plate 333.

[0033] The inner diameter of the pressure relief pipe 31 is the same as the diameter of the sealing ring 321. Two sets of fixing plates 322 are fixed on the sealing ring 321. A rotating rod 323 is rotatably connected between the fixing plates 322. A torsion spring passes through the rotating rod 323. The torsion spring ensures that the sealing cover 324 automatically opens or closes the sealing ring 321. A sealing ring is provided between the sealing cover 324 and the sealing ring 321 to ensure the sealing effect.

[0034] Specifically, the electric telescopic pole 332 is a three-section waterproof electric telescopic pole, and the pressure sensor 334 is model CYYZ11;

[0035] In the above scheme, with the assistance of the electric telescopic rod 332 on the connecting plate 331, the limiting plate 333 moves to the left. The leftward movement of the limiting plate 333 causes the pressure sensor 334 on the limiting plate 333 to limit and fix the sealing cover 324. When the internal pressure of the wellhead device is too high, the high-pressure fluid squeezes the sealing cover 324 in the pressure relief pipe 31. When the pressure value received by the pressure sensor 334 exceeds the set value, the electric telescopic rod 332 retracts, the limiting plate 333 separates from the sealing cover 324, and the high-pressure fluid impacts the sealing cover 324. With the action of the rotating rod 323 and the torsion spring between the fixed plate 322, the sealing cover 324 separates from the sealing ring 321 on the pressure relief pipe 31, thereby relieving the pressure of the high-pressure fluid.

[0036] Working principle: When using this wellhead device with anti-leakage function, the external power supply is connected. The wellhead structure 1 plays a role in preventing leakage, the cooling and crack prevention component 2 plays a role in cooling, and the pressure relief structure 3 plays a role in pressure relief.

[0037] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wellhead device with anti-leakage function, comprising a wellhead structure (1), a cooling and crack prevention component (2) embedded in the wellhead structure (1), and the wellhead structure (1) being connected to a pressure relief structure (3), characterized in that, The wellhead structure (1) includes a tubing (11), which is connected to the blowout preventer body (13) via a first leak prevention component (12), and the blowout preventer body (13) is connected to the casing head (16) via a second leak prevention component (15). The first leak-proof component (12) includes a first flange (121), a second flange (122) is disassembled and installed on the first flange (121), and a first sealing ring (123) and a second sealing ring (124) are embedded in the second flange (122) and the first flange (121), with the first sealing ring (123) located between the second sealing ring (124); The alarm assembly (14) includes an oil leak detector (141) with an alarm (142) located on the underside of the oil leak detector (141).

2. A wellhead device with anti-leakage function according to claim 1, characterized in that: The cooling and crack prevention component (2) includes an inlet pipe (21) and a drain pipe (23) connected by a guide pipe (22).

3. A wellhead device with anti-leakage function according to claim 1, characterized in that: The pressure relief structure (3) includes a pressure relief pipe (31), and an auxiliary sealing component (32) and a limiting component (33) are fixed inside the pressure relief pipe (31). The limiting component (33) is located to the right of the auxiliary sealing component (32).

4. A wellhead device with anti-leakage function according to claim 3, characterized in that: The auxiliary sealing assembly (32) includes a sealing ring (321), a fixing plate (322) is fixed on the sealing ring (321), a rotating rod (323) is rotatably connected between the fixing plates (322), and a sealing cover (324) is fixed on the lower side of the rotating rod (323).

5. A wellhead device with anti-leakage function according to claim 3, characterized in that: The limiting component (33) includes a connecting plate (331), an electric telescopic rod (332) is fixed on the left side of the connecting plate (331), a limiting plate (333) is fixed at the telescopic end of the electric telescopic rod (332), and a pressure sensor (334) is embedded on the limiting plate (333).

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