A clamp type wellhead remote plug connector

Abstract

The utility model provides a kind of hoop wellhead remote plug-in connector, comprising: body;Outer tube, outer tube is installed in the top of body outer side, and the top of outer tube is equipped with upper cover.The utility model provides a kind of hoop wellhead remote plug-in connector, through body, outer tube, upper cover, guide head, four locking unlocking components, four cylinder rods, four proximity switch sensors and quick pressure test components etc. structure mutual cooperation, when using, guide head can guide plug-in connector precision alignment, without manual high-altitude auxiliary calibration, to solve the problem of alignment difficulty at night and rainy day, cylinder driving hoop realizes remote locking and unlocking, replace manual high-altitude operation, reduce safety risk;Indicator rod synchronous action with hoop, cooperate with proximity switch sensor real-time feedback locking or unlocking state, without on-site observation confirmation, overall realization plug-in and locking process remote control, state visualization, improve the convenience and reliability of wellhead operation.

Description

Technical Field

[0001] This utility model relates to the field of blowout preventer technology, and in particular to a clamp-type remote plug-in connector for wellheads. Background Technology

[0002] With the increase in horizontal wells for shale gas and tight gas, the application of coiled tubing fracturing and perforation operations has also increased. During these operations, the connection between the coiled tubing blowout preventer and the wellhead Christmas tree requires personnel to install and dismantle it at height. If multiple tool strings need to be replaced during the operation, multiple installations and dismantlings at height will be necessary. High-altitude connections require close coordination between the crane and the installation personnel; improper coordination can easily lead to safety accidents. Wellheads are high-pressure areas, posing certain potential safety risks to personnel during operation; the frequent high-altitude work also presents significant safety risks.

[0003] Therefore, it is necessary to provide a clamp-type remote plug-in connector for wellheads to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model provides a clamp-type remote plug-in connector for wellheads, which solves the problems of difficult alignment at night and in rainy weather, and difficulty in confirming the plugging, unplugging and locking status.

[0005] To solve the above-mentioned technical problems, this utility model provides a clamp-type remote plug-in connector for wellheads, comprising: ontology; An outer cylinder is installed on the top of the outer side of the main body, and a top cover is installed on the top of the outer cylinder, and a guide head is installed on the top of the top cover; Four locking and unlocking components are respectively disposed around the outer cylinder. Each of the four locking and unlocking components includes a hydraulic cylinder, a clamp, and an indicator rod. The hydraulic cylinder is fixedly installed on the outer side of the outer cylinder, the clamp is installed on one end of the piston rod of the hydraulic cylinder, and the indicator rod is fixedly installed on the side of the clamp. Four cylinder rods are respectively disposed at the other end of the four hydraulic cylinder piston rods for limiting the hydraulic cylinder piston rods. A proximity switch sensor is fixedly installed at one end of each of the four cylinder rods. A rapid pressure testing component is disposed on the side of the main body.

[0006] Preferably, a plug-in connector is inserted into the top of the inner side of the body, and the clamp is engaged with the outer side of the plug-in connector.

[0007] Preferably, air pipes are installed between the four cylinder rods to connect the four cylinder rods in parallel.

[0008] Preferably, two hydraulic pipes are installed between each of the four hydraulic cylinders to connect the four hydraulic cylinders in parallel.

[0009] Preferably, a union nut is fitted onto the bottom of the outer surface of the main body.

[0010] Preferably, the rapid pressure testing assembly includes a first housing, a first connector, a second connector, a second housing, a push rod, a first spring, a valve seat, a ball, and a second spring. The first housing and the second housing are fixedly installed by bolts. The second connector is fixedly installed on the side of the first housing, and the first connector is fixedly installed on one side of the second housing. The push rod is disposed on the inner side of the first housing, with one end located on the inner side of the second housing. The first spring is sleeved on the outer side of the push rod. The valve seat is installed on the inner side of the second housing. The ball abuts against one side of the valve seat, and the second spring abuts against one side of the ball, for pushing the ball toward one side of the valve seat.

[0011] Preferably, the second housing and the side of the body are mounted together, and one end of the top rod is located on the other side of the sphere.

[0012] Compared with related technologies, the clamp-type remote plug-in connector for wellheads provided by this utility model has the following advantages: This utility model provides a clamp-type remote plug-in connector for wellheads. Through the coordinated structure of the main body, outer cylinder, upper cover, guide head, four locking / unlocking components, four cylinder rods, four proximity switch sensors, and a rapid pressure testing component, the guide head guides the plug-in connector to precise alignment during use, eliminating the need for manual high-altitude calibration and solving the problem of alignment difficulties at night and in rainy weather. The hydraulic cylinder drives the clamp to achieve remote locking and unlocking, replacing manual high-altitude operation and reducing safety risks. The indicator rod moves synchronously with the clamp, and the proximity switch sensors provide real-time feedback on the locking or unlocking status, eliminating the need for on-site observation and confirmation. The entire process of plugging in and locking is remotely controlled and its status visualized, improving the convenience and reliability of wellhead operations. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a first embodiment of a clamp-type wellhead remote plug-in connector provided by this utility model; Figure 2 for Figure 1 The diagram shows a top view of the structure. Figure 3 for Figure 1 The diagram shows a side cross-sectional view of the structure. Figure 4 A schematic diagram of the structure of a second embodiment of a clamp-type wellhead remote plug-in connector provided by this utility model; Figure 5 for Figure 4 The enlarged schematic diagram of part A shown below; Figure 6 for Figure 5 The diagram shows a cross-sectional structure of the rapid pressure testing component.

[0014] The following are the labeling elements in the diagram: 1. Body, 2. Union nut, 3. Quick pressure test assembly, 31. First housing, 32. First connector, 33. Second connector, 34. Second housing, 35. Top rod, 36. First spring, 37. Valve seat, 38. Ball, 39. Second spring, 4. Outer cylinder, 5. Top cover, 6. Guide head, 7. Locking / unlocking assembly, 71. Hydraulic cylinder, 72. Clamp, 73. Indicator rod, 8. Plug-in connector, 9. Cylinder rod, 10. Proximity switch sensor, 11. Hydraulic pipe, 12. Air pipe. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Example 1

[0017] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a clamp-type wellhead remote plug-in connector provided by this utility model; Figure 2 for Figure 1 The diagram shows a top view of the structure. Figure 3 for Figure 1 The diagram shows a side cross-sectional view of the structure.

[0018] A clamp-type remote plug-in connector for wellheads includes: a body 1; Outer cylinder 4, the outer cylinder 4 is installed on the top of the outer side of the body 1, the top of the outer cylinder 4 is equipped with a top cover 5, and the top of the top cover 5 is equipped with a guide head 6; Four locking and unlocking components 7 are respectively disposed around the outer cylinder 4. Each of the four locking and unlocking components 7 includes a hydraulic cylinder 71, a clamp 72 and an indicator rod 73. The hydraulic cylinder 71 is fixedly installed on the outer side of the outer cylinder 4, the clamp 72 is installed on one end of the piston rod of the hydraulic cylinder 71, and the indicator rod 73 is fixedly installed on the side of the clamp 72. Four cylinder rods 9 are respectively disposed at the other end of the piston rods of the four hydraulic cylinders 71, and are used to limit the piston rods of the hydraulic cylinders 71. A proximity switch sensor 10 is fixedly installed at one end of each of the four cylinder rods 9. Rapid pressure testing component 3 is disposed on the side of the main body 1.

[0019] The main body 1 serves as the core installation base, the outer cylinder 4 provides protection and installation space, the guide head 6 assists in the precise alignment of the connector 8, the locking and unlocking assembly 7 enables remote locking and unlocking, the cylinder rod 9 provides safety locking, the rapid pressure testing assembly 3 completes the sealing test and pressure relief, and the proximity switch sensor 10 enables remote status monitoring.

[0020] The top of the inner side of the main body 1 is connected to a plug-in connector 8, and the clamp 72 is engaged with the outer side of the plug-in connector 8.

[0021] The plug-in connector 8 is connected to the blowout preventer pipe string, and the clamp 72 achieves a stable connection between the main body 1 and the plug-in connector 8 by clamping the shoulder of the plug-in connector 8.

[0022] Air pipes 12 are installed between the four cylinder rods 9 to connect the four cylinder rods 9 in parallel.

[0023] The air pipe 12 enables the four cylinder rods 9 to move synchronously, ensuring the consistency of safety locking and unlocking and improving structural stability.

[0024] Two hydraulic pipes 11 are installed between each of the four hydraulic cylinders 71 to connect the four hydraulic cylinders 71 in parallel.

[0025] Two hydraulic pipes 11 correspond to the locking and unlocking oil circuits respectively, enabling the four hydraulic cylinders 71 to drive the clamps 72 to move synchronously, ensuring that the locking and unlocking are evenly stressed.

[0026] A union nut 2 is fitted onto the bottom of the outer side of the main body 1.

[0027] Union nuts 2 are used for the fixed connection between the main body 1 and the wellhead tree, ensuring the overall installation of the device is stable.

[0028] The working principle of the clamp-type remote plug-in connector for wellheads provided by this utility model is as follows: During the connection operation, the guide head 6 guides the plug-in connector 8 to be accurately inserted into the body 1; pressure is applied to the locking control port of the hydraulic cylinder 71, and the piston rod drives the clamp 72 to move inward, engaging the shoulder of the plug-in connector 8 to achieve locking; at this time, the indicator rod 73 retracts into the outer cylinder 4 along with the clamp 72, and the proximity switch sensor 10 sends a locking signal to the control room to complete remote confirmation; During the unlocking operation, pressure is first applied to the cylinder rod 9 through the air pipe 12 to retract the cylinder rod 9 and release the limit on the piston rod of the hydraulic cylinder 71; then pressure is applied to the unlocking control port of the hydraulic cylinder 71, and the piston rod pulls the clamp 72 outward to disengage from the shoulder of the plug-in connector 8, thereby achieving unlocking; the indicator rod 73 extends out of the outer cylinder 4 along with the clamp 72, and the proximity switch sensor 10 sends an unlocking completion signal to complete remote confirmation.

[0029] Safety locking function: When locked, cylinder rod 9 automatically pops out to limit the hydraulic cylinder piston rod. If cylinder rod 9 is not retracted first, hydraulic cylinder 71 cannot be unlocked to prevent accidental operation.

[0030] Compared with related technologies, the clamp-type remote plug-in connector for wellheads provided by this utility model has the following advantages: The structure, consisting of body 1, outer cylinder 4, top cover 5, guide head 6, four locking and unlocking components 7, four cylinder rods 9, four proximity switch sensors 10, and rapid pressure testing component 3, works in tandem. During use, the guide head 6 guides the insertion and removal of the connector 8 to achieve precise alignment, eliminating the need for manual high-altitude calibration and solving the problem of alignment difficulties at night and in rainy weather. The hydraulic cylinder 71 drives the clamp 72 to achieve remote locking and unlocking, replacing manual high-altitude operation and reducing safety risks. The indicator rod 73 moves synchronously with the clamp 72, and together with the proximity switch sensors 10, provides real-time feedback on the locking or unlocking status, eliminating the need for on-site observation and confirmation. The entire process of insertion, removal, and locking is remotely controlled and its status visualized, improving the convenience and reliability of wellhead operations.

[0031] Example 2

[0032] Please refer to the following: Figure 4 , Figure 5 and Figure 6 Based on the clamp-type remote plug-in connector for wellheads provided in the first embodiment of this application, the second embodiment of this application proposes another clamp-type remote plug-in connector for wellheads. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0033] Specifically, the second embodiment of this application provides a clamp-type remote plug-in connector for wellheads, which differs in that the clamp-type remote plug-in connector for wellheads includes a quick pressure testing assembly 3 comprising a first housing 31, a first connector 32, a second connector 33, a second housing 34, a push rod 35, a first spring 36, a valve seat 37, a ball 38, and a second spring 39. The first housing 31 and the second housing 34 are fixedly installed by bolts. The second connector 33 is fixedly installed on the side of the first housing 31, and the first connector 32 is fixedly installed on one side of the second housing 34. The push rod 35 is disposed on the inner side of the first housing 31, with one end located on the inner side of the second housing 34. The first spring 36 is sleeved on the outer side of the push rod 35. The valve seat 37 is installed on the inner side of the second housing 34. The ball 38 abuts against one side of the valve seat 37, and the second spring 39 abuts against one side of the ball 38, for pushing the ball 38 toward one side of the valve seat 37.

[0034] The second housing 34 is mounted on the side of the main body 1, and one end of the top rod 35 is located on the other side of the ball 38.

[0035] The first connector 32 is a pressure test port, and the second connector 33 is a pressure relief port. The pressure test and pressure relief can be controlled remotely to replace manual operation and avoid the risk of gas explosion.

[0036] The working principle of the clamp-type remote plug-in connector for wellheads provided by this utility model is as follows: During the pressure test, pressure is applied to the interior of the second housing 34 through the first connector 32. At this time, the air pressure will push the ball 38 away from the valve seat 37, allowing the gas to enter between the two sealing rings of the plug-in connector 8 to test the sealing performance. After the pressure test is completed, the ball 38 presses against the valve seat 37 under the action of the second spring 39 to maintain the seal. When depressurizing, pressure is applied through the second connector 33, pushing the push rod 35 to squeeze the ball 38, compressing the second spring 39, and the ball 38 disengages from the valve seat 37, releasing internal pressure and preventing the sound of air explosion when removing or plugging in the connector.

[0037] Compared with related technologies, the clamp-type remote plug-in connector for wellheads provided by this utility model has the following advantages: The first housing 31, first connector 32, second connector 33, second housing 34, push rod 35, first spring 36, valve seat 37, ball 38, and second spring 39 work together to achieve remote and rapid pressure testing. During pressure testing, the ball 38 is pushed away from the valve seat 37 by pressurizing the first connector 32, allowing gas to enter the sealing test area. No additional pressure testing device is required, thus enabling accurate testing of the connector's sealing performance. During depressurization, the push rod 35 is driven by the second connector 33 to squeeze the ball 38, releasing the internal pressure and avoiding the risk of gas explosion when removing or unplugging the connector 8. This simplifies the pressure testing and depressurization process and avoids the safety hazards of manual intervention under high pressure, further improving the safety and efficiency of wellhead operations.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamp-type remote plug-in connector for wellheads, characterized in that, include: ontology; An outer cylinder is installed on the top of the outer side of the main body, and a top cover is installed on the top of the outer cylinder, and a guide head is installed on the top of the top cover; Four locking and unlocking components are respectively disposed around the outer cylinder. Each of the four locking and unlocking components includes a hydraulic cylinder, a clamp, and an indicator rod. The hydraulic cylinder is fixedly installed on the outer side of the outer cylinder, the clamp is installed on one end of the piston rod of the hydraulic cylinder, and the indicator rod is fixedly installed on the side of the clamp. Four cylinder rods are respectively disposed at the other end of the four hydraulic cylinder piston rods for limiting the hydraulic cylinder piston rods. A proximity switch sensor is fixedly installed at one end of each of the four cylinder rods. A rapid pressure testing component is disposed on the side of the main body.

2. The clamp-type remote plug-in connector for wellheads according to claim 1, characterized in that, The top of the inner side of the body is connected to a plug-in connector, and the clamp is engaged with the outer side of the plug-in connector.

3. The clamp-type remote plug-in connector for wellheads according to claim 1, characterized in that, Air pipes are installed between the four cylinder rods to connect them in parallel.

4. The clamp-type remote plug-in connector for wellheads according to claim 1, characterized in that, Two hydraulic pipes are installed between each of the four hydraulic cylinders to connect them in parallel.

5. A clamp-type remote plug-in connector for wellheads according to claim 1, characterized in that, A union nut is fitted onto the bottom of the outer side of the body.

6. A clamp-type remote plug-in connector for wellheads according to claim 1, characterized in that, The rapid pressure testing assembly includes a first housing, a first connector, a second connector, a second housing, a push rod, a first spring, a valve seat, a ball, and a second spring. The first housing and the second housing are fixedly installed by bolts. The second connector is fixedly installed on the side of the first housing, and the first connector is fixedly installed on one side of the second housing. The push rod is located on the inner side of the first housing, with one end located on the inner side of the second housing. The first spring is sleeved on the outer side of the push rod. The valve seat is installed on the inner side of the second housing. The ball abuts against one side of the valve seat, and the second spring abuts against one side of the ball, for pushing the ball towards one side of the valve seat.

7. A clamp-type remote plug-in connector for wellheads according to claim 6, characterized in that, The second housing and the side of the main body are mounted together, and one end of the top rod is located on the other side of the sphere.

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