A device for assisting in replacing a wing valve under pressure at a wellhead

Abstract

The utility model relates to petroleum and natural gas exploitation equipment technical field, specifically disclose a device for auxiliary wellhead pressure replacement side wing valve, including hydraulic actuating mechanism, one side of hydraulic actuating mechanism is fixedly arranged with hydraulic pipeline. The one end away from hydraulic actuating mechanism of hydraulic pipeline is fixedly arranged with hydraulic power assembly, the hydraulic actuating mechanism includes hydraulic cylinder body, the below of hydraulic cylinder body is fixedly arranged with hydraulic fixture, the below center of hydraulic fixture is fixedly arranged with fixed pipe, the below of fixed pipe is fixedly arranged with telescopic pipe, the below of telescopic pipe is fixedly arranged with execution clamp, the upper center of hydraulic cylinder body is fixedly arranged with control turntable, and control turntable upper end is hexagonal body setting, through the structural design of hydraulic actuating mechanism, effectively solved the pain point of'manual lifting labor intensity is big, interface docking precision is low' in traditional pressure replacement operation.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction equipment technology, and in particular to a device for replacing side wing valves under pressure at the wellhead. Background Technology

[0002] During oil and gas extraction, the side valves of wellhead equipment are exposed to high-pressure, corrosive fluid environments for extended periods, making them prone to malfunctions such as seal failure and valve core damage. Regular replacement is necessary to ensure wellhead operational safety. Currently, to avoid production losses due to wellhead shutdowns, pressurized operation is typically used when replacing wellhead side valves.

[0003] In current operations involving the replacement of side wing valves under pressure, workers often rely on manually supporting the valves and adjusting their installation positions. This is not only labor-intensive but also makes it difficult to ensure precise alignment between the valves and the wellhead interface. Furthermore, traditional sealing methods often use temporary gaskets, whose sealing performance is greatly affected by the operator's skill level, making them prone to high-pressure fluid leakage and posing safety hazards.

[0004] To address the aforementioned issues, we propose a device for assisting in the pressurized replacement of side valves at the wellhead. Utility Model Content

[0005] The purpose of this invention is to provide a device for assisting in the replacement of side wing valves under pressure at the wellhead, aiming to solve the technical problems in the prior art.

[0006] To achieve the above objectives, this utility model employs an auxiliary device for replacing side wing valves under pressure at the wellhead, comprising a hydraulic actuator, with a hydraulic pipeline fixedly installed on one side of the hydraulic actuator. A hydraulic power component is fixedly installed at the end of the hydraulic pipeline away from the hydraulic actuator. The hydraulic actuator includes a hydraulic cylinder, with a hydraulic clamp fixedly installed below the hydraulic cylinder. A fixed pipe is fixedly installed at the lower center of the hydraulic clamp, and a telescopic pipe is fixedly installed below the fixed pipe. An actuator clamp is fixedly installed below the telescopic pipe. A control turntable is fixedly installed at the upper center of the hydraulic cylinder, and the upper end of the control turntable is hexagonal.

[0007] The hydraulic pipeline includes a pressure relief pipe, which is located on one side of the upper end of the hydraulic cylinder body. A connecting pipe is fixedly installed on the side of the hydraulic cylinder body away from the pressure relief pipe.

[0008] A pressure testing platform is fixedly installed at the end of the connecting pipe away from the hydraulic cylinder body, and a pressure display meter is fixedly installed above the pressure testing platform.

[0009] The pressure testing platform is fixedly provided with a conversion connector at the end away from the connecting pipe, and a transmission pipe is fixedly provided at the end of the conversion connector away from the pressure testing platform.

[0010] The hydraulic power mechanism includes an output monitoring platform, which is located at the end of the transmission pipe away from the conversion joint. A monitoring display is fixedly installed on the monitoring platform, and a control valve is installed on one side of the monitoring display. The control valve is also rotatably installed on the upper side of the output monitoring platform, and a base is fixedly installed under the output monitoring platform.

[0011] An indicator light is fixedly installed on the base, and a start / pause button is fixedly installed on one side of the indicator light.

[0012] The base is also equipped with a power unit, which is also located on one side of the output monitoring station.

[0013] Beneficial effects: 1. This utility model discloses an auxiliary device for replacing side-wing valves under pressure at the wellhead. Through the structural design of the hydraulic actuator, it effectively solves the pain points of "high labor intensity and low interface docking accuracy" in traditional pressurized replacement operations. Specifically, the hydraulic cylinder, in conjunction with the hydraulic clamp, telescopic tube, and actuator clamp, can stably hold the side-wing valve to be replaced, replacing the traditional manual support method and significantly reducing the physical exertion of operators—especially in pressurized environments, eliminating the need to lift heavy valve components for extended periods and avoiding operational errors caused by physical fatigue. Simultaneously, the telescopic tube can achieve precise linear displacement control through hydraulic drive. Combined with the angle adjustment of the control dial (with a hexagonal design at the top for easy tool assistance), it allows for quick and accurate alignment of the valve with the wellhead interface, solving the problems of "difficult positioning and misalignment" during manual adjustment. This not only reduces the time spent on secondary adjustments due to docking deviations but also ensures the fit between the valve sealing surface and the wellhead interface, laying the foundation for subsequent sealing operations.

[0014] 2. This utility model discloses an auxiliary device for replacing side wing valves under pressure at the wellhead. Through the monitoring and control structure of the hydraulic pipeline and power components, it significantly reduces the safety risks of live operation and improves sealing stability. On the one hand, the pressure tester and pressure display instrument equipped in the hydraulic pipeline can provide real-time feedback on the pressure status at the interface between the hydraulic cylinder and the wellhead. Combined with the monitoring display instrument and control valve on the output monitoring platform, operators can accurately control the output intensity of the hydraulic power, avoiding high-pressure fluid impact caused by sudden pressure changes. Simultaneously, the pressure relief pipe can quickly release excess pressure in the pipeline when the pressure is abnormal, reducing the risk of high-pressure medium leakage from a hardware perspective. On the other hand, the actuator's clamps can form a uniform and stable clamping force on the valve, ensuring a consistent fit between the valve sealing surface and the wellhead interface. This avoids the problem of uneven force on the sealing surface in traditional manual operation, improves sealing performance during live operation, and reduces safety hazards caused by seal failure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a device for replacing side wing valves under pressure at the wellhead, according to this utility model.

[0017] Figure 2 This is a front view of a device for assisting in the replacement of side wing valves under pressure at the wellhead, according to this utility model.

[0018] Figure 3 This is a top view of a device for assisting in the replacement of side wing valves under pressure at the wellhead, according to this utility model.

[0019] 1-Hydraulic actuator, 101-Hydraulic cylinder body, 102-Hydraulic clamp, 103-Fixed pipe, 104-Telescopic pipe, 105-Actuating clamp, 106-Control turntable, 2-Hydraulic power assembly, 201-Base, 202-Output monitoring station, 203-Control valve, 204-Power unit, 205-Indicator light, 206-Start / pause button, 207-Monitoring display, 3-Hydraulic pipeline, 301-Pressure relief pipe, 302-Connecting pipe, 303-Pressure measuring station, 304-Pressure measuring display, 305-Conversion joint, 306-Transmission pipe. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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 orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figures 1-3 As shown, this utility model provides a device for assisting in the live replacement of side wing valves at the wellhead. It aims to solve the problems in the existing live replacement of side wing valves, which mostly rely on operators to manually support the valve and adjust its installation position. This is not only labor-intensive, but also makes it difficult to ensure the precise connection between the valve and the wellhead interface. At the same time, traditional sealing methods often use temporary sealing gaskets, and the sealing performance is greatly affected by the operator's skill level, which can easily lead to high-pressure fluid leakage and pose safety hazards.

[0025] like Figure 1 and Figure 2 As shown, the hydraulic actuator 1 is the working end of the device, and its core component is the hydraulic cylinder 101 (which adopts a high-pressure single-acting hydraulic cylinder with a rated working pressure suitable for wellhead pressurization). The hydraulic clamp 102 is fixedly connected to the lower part of the hydraulic cylinder 101 by bolts. The hydraulic clamp 102 is used to stably support the subsequent telescopic adjustment components. A fixed pipe 103 is welded and fixed at the lower center position of the hydraulic clamp 102. A telescopic pipe 104 is nested at the lower end of the fixed pipe 103 (a sealing guide sleeve is provided between the telescopic pipe 104 and the fixed pipe 103, and linear telescopic movement can be achieved by the hydraulic drive of the hydraulic cylinder 101). The lower end of the telescopic pipe 104 is fixed with an actuator 105 by a locking pin.

[0026] like Figure 1 and Figure 3As shown, the end of the transmission pipe 306 away from the conversion connector 305 is connected to the output monitoring station 202. Above the output monitoring station 202, a monitoring display meter 207 (a digital display meter that synchronously displays the real-time pressure of the transmission pipe 306 and the output flow of the power unit 204) is embedded and fixed. A control valve 203 (a multi-position rotary valve that can adjust the direction and flow of the hydraulic output to realize the fast and slow extension and retraction control of the telescopic pipe 104) is rotatably installed on one side of the monitoring display meter 207. On the platform of the base 201, the power unit 204, an indicator light 205 (a solid green light indicates that the device is in standby mode, and a flashing red light indicates that the pressure is abnormal) and a start / pause button 206 (a jog button that controls the start and stop of the power unit 204) are also fixedly installed.

[0027] When using the device, move it to the wellhead work area, check the sealing status of the hydraulic pipeline 3, activate the start / pause button 206, observe that the indicator light 205 is green and the value of the monitoring display 207 is stable, confirm that the device is ready, open the execution clamp 105, put the valve body of the side wing valve to be replaced into the clamp and lock it, use the hexagonal end of the control dial 106 with a wrench to initially adjust the valve angle, operate the control valve 203 to drive the telescopic pipe 104 to slowly extend and retract, while observing the wellhead interface position, use the control dial 106 to finely adjust the valve angle to make the valve interface precisely aligned with the wellhead interface. After alignment, continuously adjust the thrust of the telescopic pipe 104 through the control valve 203 (refer to the value of the pressure display 304 to avoid overpressure) to assist in the disassembly or installation of the valve. After the operation is completed, turn the manual pressure relief valve of the pressure relief pipe 301 to release the pipeline pressure, close the start / pause button 206, release the execution clamp 105, and remove the device.

[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A device for assisting in the pressurized replacement of side wing valves at the wellhead, characterized in that, It includes a hydraulic actuator (1), a hydraulic pipeline (3) is fixedly provided on one side of the hydraulic actuator (1), and a hydraulic power assembly (2) is fixedly provided at the end of the hydraulic pipeline (3) away from the hydraulic actuator (1). The hydraulic actuator (1) includes a hydraulic cylinder body (101), a hydraulic clamp (102) is fixedly installed below the hydraulic cylinder body (101), a fixed pipe (103) is fixedly installed at the lower center of the hydraulic clamp (102), a telescopic pipe (104) is fixedly installed below the fixed pipe (103), an actuator clamp (105) is fixedly installed below the telescopic pipe (104), and a control turntable (106) is fixedly installed at the upper center of the hydraulic cylinder body (101), and the upper end of the control turntable (106) is hexagonal.

2. The device for replacing side wing valves under pressure at the auxiliary wellhead as described in claim 1, characterized in that, The hydraulic pipeline (3) includes a pressure relief pipe (301), which is located on the upper side of the hydraulic cylinder body (101). A connecting pipe (302) is fixedly provided on the side of the hydraulic cylinder body (101) away from the pressure relief pipe (301).

3. The device for replacing side wing valves under pressure at the auxiliary wellhead as described in claim 2, characterized in that, A pressure testing platform (303) is fixedly installed at the end of the connecting pipe (302) away from the hydraulic cylinder (101), and a pressure display meter (304) is fixedly installed above the pressure testing platform (303).

4. The auxiliary wellhead pressure-replacement device for side wing valves as described in claim 3, characterized in that, A conversion connector (305) is fixedly provided at the end of the pressure measuring platform (303) away from the connecting pipe (302), and a transmission pipe (306) is fixedly provided at the end of the conversion connector (305) away from the pressure measuring platform (303).

5. The device for replacing side wing valves under pressure at the auxiliary wellhead as described in claim 4, characterized in that, The hydraulic power assembly (2) includes an output monitoring station (202), which is located at the end of the transmission pipe (306) away from the conversion joint (305). A monitoring display (207) is fixedly installed on the output monitoring station (202), and a control valve (203) is provided on one side of the monitoring display (207). The control valve (203) is also rotatably installed on the upper side of the output monitoring station (202). A base (201) is fixedly installed under the output monitoring station (202).

6. The device for replacing side wing valves under pressure at the auxiliary wellhead as described in claim 5, characterized in that, An indicator light (205) is fixedly installed on the base (201), and a start / pause button (206) is fixedly installed on one side of the indicator light (205).

7. The device for replacing side wing valves under pressure at the auxiliary wellhead as described in claim 3, characterized in that, A power unit (204) is also provided on the base (201), and the power unit (204) is also provided on one side of the output monitoring station (202).

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