Remote switching device for wellhead gate valve of out-of-control well

Abstract

The utility model relates to the technical field of blowout out of control or wellhead leak, disclose the remote switch device of out of control well wellhead gate valve, the device includes: drive source subassembly, provides power source for transmission assembly through drive source subassembly, transmission assembly is arranged in one end of drive source subassembly, fixed assembly is arranged in one end of transmission assembly away from drive source subassembly, realizes the fixed and dismounting of grab head through fixed assembly, grab head is arranged in one side of fixed assembly away from transmission assembly, the soft connection axle is arranged between fixed assembly and grab head, one side of soft connection axle is provided with the connecting piece matched with fixed assembly. The utility model realizes the remote switch of wellhead gate valve, reaches the purpose of using other tools to carry out the plugging of wellhead leak, further realizes the rapid disposal to wellhead, improves the efficiency of rescue, guarantees the rescue safety.

Description

Technical Field

[0001] This utility model relates to the field of well blowout or wellhead leakage technology, specifically to a remote switching device for wellhead gate valves in uncontrolled wells. Background Technology

[0002] Uncontrolled wellhead gate valves are critical equipment used in oil and gas extraction to control wellhead pressure and flow. Typically located at the wellhead as part of the wellhead assembly, they are used to quickly close the wellhead in the event of a blowout or downhole runaway, preventing oil and gas well runaway and blowout disasters. Their structure is usually made of high-strength alloy materials. In special conditions such as deep wells, high-pressure wells, and sulfur-containing wells, uncontrolled wellhead gate valves are also equipped with special designs such as corrosion resistance and high-temperature resistance to adapt to harsh environments.

[0003] During the emergency response to a blowout, if there is a leak in the four-way valve of the blowout preventer or wellhead, it is necessary to operate the wellhead gate valve. If a person approaches the wellhead to operate the gate valve, especially if there is a fire at the wellhead, the risk is extremely high, which can cause unpredictable losses to the emergency response and fail to quickly deal with the wellhead leak.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In response to the problems in related technologies, this utility model proposes a remote switching device for the wellhead gate valve of an out-of-control well, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A remote switching device for a gate valve at the wellhead of an uncontrolled well includes: a drive source assembly that provides a power source to a transmission assembly; a transmission assembly located at one end of the drive source assembly; a fixing assembly located at the end of the transmission assembly away from the drive source assembly, which enables the fixing and disassembly of the gripper; a gripper located on the side of the fixing assembly away from the transmission assembly; and a flexible connecting shaft located between the fixing assembly and the gripper, with a connector on one side of the flexible connecting shaft that mates with the fixing assembly.

[0008] Optionally, in order to achieve remote switching of the wellhead gate valve by using an explosion-proof box, servo motor, battery pack, controller, inverter, drive shaft and gripper, so as to achieve the purpose of sealing the wellhead leak by using other tools, thereby achieving rapid treatment of the wellhead, improving the efficiency of rescue and ensuring the safety of rescue, the drive source component includes an explosion-proof box set on one side of the transmission component, and the battery pack, servo motor and controller are arranged in sequence inside the explosion-proof box. An inverter is set on one side of the controller. The transmission component includes a drive shaft connected to the output end of the servo motor. Several built-in bearings are set on the outer circumference of the drive shaft, and a first support outer sleeve is fitted on the outer circumference of the built-in bearings.

[0009] Optionally, to achieve stable fixing and convenient disassembly of the gripper head, ensuring the reliability of the connection between the gripper head and the gate valve operating components during remote control of the gate valve by the remote switching device for the gate valve at the wellhead of the runaway well, and facilitating quick replacement of grippers adapted to different gate valves according to actual operational needs, thereby improving the versatility and operational efficiency of the device, and enabling rapid disassembly and assembly when the gripper head is damaged, thus effectively improving the versatility, operational efficiency, and ease of maintenance of the device, the fixing component includes a mounting sleeve disposed on one side of the flexible connecting shaft. An electric push rod is disposed inside the mounting sleeve, and a first support plate is disposed at the output end of the electric push rod. Several... The mounting sleeve has several first limiting grooves on its outer circumference that mate with the support rod. A second support plate is located on the outer circumference of the mounting sleeve, and several first support seats are located on the outer circumference of the second support plate. A third support plate is located on one side of the mounting sleeve, and several second support seats are located on the outer circumference of the third support plate. The second support seats mate with a clamping plate via a rotating shaft. A third support seat is located on the outer circumference of the clamping plate, and a connecting rod is provided between the third support seat and the first support seats. Several limiting blocks are located on the inner circumference of the second support plate. A second limiting groove mates with the limiting blocks is opened on the outer circumference of the mounting sleeve, on one side of the first limiting groove.

[0010] Optionally, a remote switching device for the wellhead gate valve of an uncontrolled well also includes:

[0011] A first tapered angle transmission assembly connected to a drive shaft is provided with a spline shaft at its bottom end, and a second support sleeve connected to the first tapered angle transmission assembly is provided on the outside of the spline shaft; a spline sleeve is fitted at the bottom of the spline shaft, and a second tapered angle transmission assembly is provided at the bottom end of the spline sleeve, and a third support sleeve connected to the second tapered angle transmission assembly is provided on the outside of the spline sleeve, the third support sleeve is inserted inside the second support sleeve, and the third support sleeve and the second support sleeve are connected by bolts.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The remote switching device for the wellhead gate valve of the uncontrolled well provided by this utility model has a reasonable and compact structure and ingenious design. The whole structure adopts a steel structure, and the main body adopts an explosion-proof box, servo motor, battery pack, controller, inverter, transmission shaft and gripper, thereby realizing the remote switching of the wellhead gate valve, achieving the purpose of sealing the wellhead leak by using other tools, thereby realizing the rapid handling of the wellhead, improving the efficiency of rescue and ensuring the safety of rescue.

[0014] 2. By setting a fixing component, this utility model can achieve stable fixing and convenient disassembly of the gripper head, ensuring the reliability of the connection between the gripper head and the gate valve operating components during remote control of the gate valve in the uncontrolled wellhead gate valve remote switching device. At the same time, it is convenient to quickly replace the gripper head with one that is compatible with different gate valves according to actual operation needs, thereby improving the versatility and operation efficiency of the device. Furthermore, it can quickly complete the disassembly and assembly work when the gripper head is damaged, thus effectively improving the versatility, operation efficiency and maintenance convenience of the device. 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 embodiments 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 structural schematic diagram according to Embodiment 1 of the present utility model;

[0017] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 3 This is a structural schematic diagram of the fixing component according to Embodiment 1 of this utility model;

[0019] Figure 4 This is a partial schematic diagram of the fixing component according to Embodiment 1 of this utility model;

[0020] Figure 5 This is a structural schematic diagram according to Embodiment 2 of the present invention;

[0021] Figure 6 This is a structural schematic diagram according to Embodiment 3 of the present utility model;

[0022] Figure 7 yes Figure 6 A magnified view of a section at point B.

[0023] In the picture:

[0024] 1. Drive source assembly; 101. Explosion-proof box; 102. Battery pack; 103. Servo motor; 104. Controller; 105. Inverter; 2. Transmission assembly; 201. Drive shaft; 202. Built-in bearing; 203. First support outer sleeve; 3. Fixing assembly; 301. Mounting sleeve; 302. Electric push rod; 303. First support plate; 304. Support rod; 305. First limit groove; 306. Second support plate; 307. First support 308. Third support plate; 309. Second support seat; 3010. Clamping plate; 3011. Third support seat; 3012. Connecting rod; 3013. Limiting block; 3014. Second limiting groove; 4. Grip head; 5. Flexible connecting shaft; 501. Connecting piece; 6. First tapered angle transmission assembly; 7. Splined shaft; 8. Second support outer sleeve; 9. Splined sleeve; 10. Second tapered angle transmission assembly; 11. Third support outer sleeve; 12. Bolt. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a remote switching device for a gate valve at the wellhead of an uncontrolled well is provided.

[0027] Example 1

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the remote switching device for the gate valve of a runaway well according to an embodiment of the present invention includes: a drive source assembly 1, which provides a power source for a transmission assembly 2; a transmission assembly 2, which is disposed at one end of the drive source assembly 1; a fixing assembly 3, which is disposed at the end of the transmission assembly 2 away from the drive source assembly 1, and which enables the fixing and disassembly of the gripper head 4; the gripper head 4, which is disposed on the side of the fixing assembly 3 away from the transmission assembly 2; and a flexible connecting shaft 5, which is disposed between the fixing assembly 3 and the gripper head 4.

[0029] In one embodiment, the drive source component 1 includes an explosion-proof box 101 disposed on one side of the transmission component 2. Inside the explosion-proof box 101, a battery pack 102, a servo motor 103, and a controller 104 are arranged in sequence. An inverter 105 is disposed on one side of the controller 104. The transmission component 2 includes a transmission shaft 201 connected to the output end of the servo motor 103. Several built-in bearings 202 are disposed on the outer circumference of the transmission shaft 201, and a first support outer sleeve 203 is sleeved on the outer circumference of the built-in bearings 202. Thus, by using the explosion-proof box 101, the servo motor 103, the battery pack 102, the controller 104, the inverter 105, the transmission shaft 201, and the gripper 4, the gate valve at the wellhead can be remotely switched, so as to achieve the purpose of sealing the wellhead leak using other tools, thereby achieving rapid treatment of the wellhead, improving the efficiency of emergency rescue, and ensuring the safety of emergency rescue.

[0030] Specifically, battery pack 102 supplies 24VDC to inverter 105, and inverter 105 outputs 220VAC to power controller 104 (if battery pack 102 is low on power, controller 104 can be powered via AC power interface). Controller 104 controls the start / stop, forward / reverse rotation, torque control, and rotation count control of servo motor 103. An external remote control can also be used to control the start / stop, forward / reverse rotation, torque control, and rotation count of servo motor 103, with a remote control distance of at least 100 meters. Servo motor 103 is equipped with an encoder, achieving a rotation count accuracy of 0.1 revolutions. By setting the rotation torque and rotation count on controller 104, precise operation of the gate valve is achieved, preventing the gate valve stem from breaking due to excessive torque or the gate valve from failing to open due to insufficient torque. The overall steel strength of the explosion-proof enclosure meets the torque transmission requirements, achieving an EX DI explosion-proof level. A wireless antenna signal transmission port is provided, and the opening does not affect the explosion-proof design.

[0031] In one embodiment, the fixing component 3 includes a mounting sleeve 301 disposed on one side of the flexible connecting shaft 5. An electric push rod 302 is disposed inside the mounting sleeve 301, and a first support plate 303 is disposed at the output end of the electric push rod 302. A plurality of support rods 304 are disposed on the outer circumference of the first support plate 303. A plurality of first limiting grooves 305 cooperating with the support rods 304 are disposed on the outer circumference of the mounting sleeve 301. A second support plate 306 is disposed on the outer circumference of the mounting sleeve 301, and a plurality of first support seats 307 are disposed on the outer circumference of the second support plate 306. A third support plate 308 is disposed on one side of the mounting sleeve 301, and a plurality of second support seats 309 are disposed on the outer circumference of the third support plate 308. The second support seats 309 cooperate with a clamping plate 3010 via a rotating shaft. A third support seat 3011 is provided on the outer circumference of 010, and a connecting rod 3012 is provided between the third support seat 3011 and the first support seat 307. Several limiting blocks 3013 are provided on the inner circumference of the second support plate 306. A second limiting groove 3014 that cooperates with the limiting block 3013 is provided on the outer circumference of the mounting sleeve 301 and on one side of the first limiting groove 305. This enables the gripper head 4 to be firmly fixed and easily disassembled, ensuring the reliability of the connection between the gripper head 4 and the gate valve operating components during the remote control of the gate valve by the remote switching device of the gate valve at the wellhead of the out-of-control well. At the same time, it is convenient to quickly replace the gripper head that is adapted to different gate valves according to actual operation needs, thereby improving the versatility and operation efficiency of the device. Moreover, when the gripper head 4 is damaged, the disassembly and assembly work can be completed quickly, thereby effectively improving the versatility, operation efficiency and maintenance convenience of the device.

[0032] Specifically, the working principle of the fixed component 3 includes: the controller 104 starts the electric push rod 302, and the output end of the electric push rod 302 drives the first support plate 303 to extend and retract, thereby driving several support rods 304 to move within the first limiting groove 305. Simultaneously, the movement of the support rods 304 drives the second support plate 306 to move. At the same time, the stability of the second support plate 306 is further enhanced by the cooperation of the limiting block 3013 and the second limiting groove 3014. The movement of the second support plate 306 simultaneously drives the connecting rod 3012. The movement, in conjunction with the rotating shaft, drives several clamping plates 3010 to clamp or expand the connector 501 on one side of the flexible connecting shaft 5 (the flexible connecting shaft 5 is provided with a connector 501 that cooperates with the fixing component 3 on one side), thereby enabling the installation and disassembly of the flexible connecting shaft 5, and thus achieving stable fixation and convenient disassembly of the gripper head 4. This ensures the reliability of the connection between the gripper head 4 and the gate valve operating components during remote control of the gate valve by the remote switching device of the gate valve at the wellhead of the out-of-control well. At the same time, it facilitates the quick replacement of grippers adapted to different gate valves according to actual operational needs.

[0033] In Embodiment 1, the remote switching device for the gate valve at the wellhead of the out-of-control well is installed at the front end of the forearm of the rescue robot. The servo motor 103 is started by the controller 104, and the output end of the servo motor 103 drives the fixed component 3 to rotate. Since the fixed component 3 is used to install and fix the connector 501, the rotation of the fixed component 3 drives the flexible connecting shaft 5 to rotate, which in turn drives the front end gripper 4 to rotate. The gripper 4 drives the gate valve handwheel to rotate, thereby achieving the purpose of opening and closing the gate valve, so as to adapt to the handwheel opening and closing in a vertical state (mainly for gate valves where the wellhead is higher than the ground).

[0034] Example 2

[0035] like Figure 1 and Figure 5 As shown, it is a structural schematic diagram of a remote switching device for a gate valve at the head of a runaway well according to another preferred embodiment of the present invention. The remote switching device for a gate valve at the head of a runaway well in this embodiment further includes a first tapered angle transmission component 6 connected to the transmission shaft 201, based on the first embodiment.

[0036] In Embodiment 2, the remote switching device for the gate valve at the wellhead of the uncontrolled well is installed at the front end of the forearm of the rescue robot. The servo motor 103 is started by the controller 104, and the output end of the servo motor 103 drives the transmission shaft 201 to rotate. Under the cooperation of the transmission shaft 201 and the first conical angle transmission assembly 6 (the first conical angle transmission assembly 6 includes a first conical angle transmission box, an active bevel gear and a driven bevel gear. When the transmission shaft 201 rotates, it drives the active bevel gear to rotate. Due to the meshing of the active bevel gear and the driven bevel gear, the active bevel gear drives the driven bevel gear to rotate. The driven bevel gear is connected to the fixed assembly through the second transmission shaft. Therefore, when the driven bevel gear rotates, it drives the second transmission shaft to rotate, and then drives the fixed assembly 3 to rotate), the fixed assembly 3 rotates. At the same time as the fixed assembly 3 rotates, the gripper 4 at the bottom rotates. The gripper 4 drives the gate valve handwheel to rotate, so as to achieve the purpose of opening and closing the gate valve, so as to adapt to the handwheel in the horizontal state of opening and closing (mainly for the gate valve on the throttling manifold).

[0037] Example 3

[0038] like Figure 1 , Figures 6-7As shown, this is a schematic diagram of the structure of a remote switching device for a gate valve at the head of a runaway well according to another preferred embodiment of the present invention. Based on Embodiment 1, the remote switching device for the gate valve at the head of a runaway well in this embodiment further includes a first conical angle transmission assembly 6 connected to the transmission shaft 201. A spline shaft 7 is provided at the bottom end of the first conical angle transmission assembly 6, and a second supporting outer sleeve 8 connected to the first conical angle transmission assembly 6 is provided outside the spline shaft 7. A spline sleeve 9 is sleeved at the bottom of the spline shaft 7, and a second conical angle transmission assembly 10 is provided at the bottom end of the spline sleeve 9. A third supporting outer sleeve 11 connected to the second conical angle transmission assembly 10 is provided outside the spline sleeve 9. The third supporting outer sleeve 11 is inserted inside the second supporting outer sleeve 8, and the third supporting outer sleeve 11 and the second supporting outer sleeve 8 are engaged by bolts 12.

[0039] In Embodiment 3, the remote switching device for the gate valve at the wellhead of the out-of-control well is installed at the front end of the forearm of the rescue robot. The servo motor 103 is started by the controller 104, and the output end of the servo motor 103 drives the transmission shaft 201 to rotate. Under the cooperation of the transmission shaft 201 and the first conical angle transmission component 6 (the working principle of the cooperation between the transmission shaft 201 and the first conical angle transmission component 6 is as described above), the spline shaft 7 and the spline sleeve 9 are rotated in sequence. Under the cooperation of the spline sleeve 9 and the second conical angle transmission component 10 (the working principle of the second conical angle transmission component 10 is the same as that of the first conical angle transmission component 6), the fixed component 3 is rotated. At the same time as the fixed component 3 rotates, the front end gripper 4 rotates. The gripper 4 drives the gate valve handwheel to rotate, so as to achieve the purpose of opening and closing the gate valve, so as to adapt to the state of the handwheel in the square well (mainly for the gate valve in the square well).

[0040] In this process, the spline shaft 7, in conjunction with the spline sleeve 9 (which has several evenly distributed key teeth on its outer circumference and corresponding keyways on its inner wall), enables the third support outer sleeve 11 to extend and retract within the second support outer sleeve 8. This allows the height of the grab head 4 to be adjusted according to different well depths (adjustment range 1-1.5 meters). After adjustment, the third support outer sleeve 11 and the second support outer sleeve 8 can be fixed together by bolts 12.

[0041] The remote switching device for the gate valve of the uncontrolled wellhead provided by this utility model enables its application in different scenarios. The transmission shaft 201 can be assembled arbitrarily according to the actual distance. Each horizontal section of the transmission shaft 201 is 1 meter long, with a total of 3 sections. The single-bend gripper and double-bend gripper corners adopt conical transmission components with a speed transmission ratio of 1:1.

[0042] In summary, with the help of the above-mentioned technical solution of this utility model, the remote switching device for the gate valve of a runaway well provided by this utility model has a reasonable and compact structure and ingenious design. The whole structure adopts a steel structure, and the main body adopts an explosion-proof box 101, a servo motor 103, a battery pack 102, a controller 104, an inverter 105, a transmission shaft 201, and a gripper 4, thereby realizing the remote switching of the gate valve at the wellhead, achieving the purpose of sealing the wellhead leak using other tools, thereby realizing the rapid handling of the wellhead, improving the efficiency of rescue, and ensuring the safety of rescue. By setting a fixing component 3, this utility model can realize the stable fixing and convenient disassembly of the gripper 4, ensuring the reliability of the connection between the gripper 4 and the gate valve operating component during the remote control of the gate valve. At the same time, it is easy to quickly replace the gripper to adapt to different gate valves according to actual operation needs, thereby improving the versatility and operation efficiency of the device. Moreover, when the gripper 4 is damaged, the disassembly and assembly work can be completed quickly, thereby effectively improving the versatility, operation efficiency, and maintenance convenience of the device.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A remote switching device for a gate valve at the head of a runaway well, characterized in that, The device includes: The drive source component provides a power source for the transmission component; The transmission component is located at one end of the drive source component; A fixing component is located at the end of the transmission component away from the drive source component, and the fixing component is used to fix and remove the gripper head; The gripper head is positioned on the side of the fixed component away from the transmission component; The flexible connecting shaft is positioned between the fixed component and the gripper.

2. The remote switching device for the wellhead gate valve of a runaway well according to claim 1, characterized in that, The drive source assembly includes an explosion-proof box located on one side of the transmission assembly, and a battery pack, a servo motor and a controller are arranged sequentially inside the explosion-proof box, with an inverter located on one side of the controller.

3. The remote switching device for the wellhead gate valve of a runaway well according to claim 2, characterized in that, The transmission assembly includes a transmission shaft connected to the output end of the servo motor. Several built-in bearings are provided on the outer circumference of the transmission shaft, and a first support outer sleeve is fitted on the outer circumference of the built-in bearings.

4. The remote switching device for the wellhead gate valve of a runaway well according to claim 1, characterized in that, The fixing component includes a mounting sleeve disposed on one side of the flexible connecting shaft. An electric push rod is disposed inside the mounting sleeve, and a first support plate is disposed at the output end of the electric push rod. Several support rods are disposed on the outer circumference of the first support plate.

5. The remote switching device for the wellhead gate valve of a runaway well according to claim 4, characterized in that, The outer circumference of the mounting sleeve is provided with several first limiting grooves that cooperate with the support rod.

6. The remote switching device for the wellhead gate valve of a runaway well according to claim 5, characterized in that, A second support plate is provided on the outer circumference of the mounting sleeve, and a plurality of first support seats are provided on the outer circumference of the second support plate; a third support plate is provided on one side of the mounting sleeve, and a plurality of second support seats are provided on the outer circumference of the third support plate. The second support seats cooperate with the clamping plate through a rotating shaft. A third support seat is provided on the outer circumference of the clamping plate, and a connecting rod is provided between the third support seat and the first support seat.

7. The remote switching device for the wellhead gate valve of a runaway well according to claim 6, characterized in that, The second support plate has several limiting blocks on its inner circumference, and the mounting sleeve has a second limiting groove on its outer circumference, located on one side of the first limiting groove, that cooperates with the limiting blocks.

8. The remote switching device for the wellhead gate valve of a runaway well according to claim 3, characterized in that, The device also includes a first tapered angle transmission assembly connected to the drive shaft.

9. The remote switching device for the wellhead gate valve of a runaway well according to claim 8, characterized in that, The device further includes: a spline shaft is provided at the bottom end of the first tapered angle transmission assembly, and a second support sleeve connected to the first tapered angle transmission assembly is provided outside the spline shaft; a spline sleeve is sleeved at the bottom of the spline shaft, a second tapered angle transmission assembly is provided at the bottom end of the spline sleeve, and a third support sleeve connected to the second tapered angle transmission assembly is provided outside the spline sleeve. The third support outer tube is inserted inside the second support outer tube, and the third support outer tube and the second support outer tube are connected by bolts.

10. The remote switching device for the wellhead gate valve of a runaway well according to claim 1, characterized in that, One side of the flexible connecting shaft is provided with a connector that mates with the fixing component.

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