A kind of underwater tubing hanger THRT installation disassembly device

Abstract

The application discloses a kind of underwater tubing hanger THRT installation disassembly device, it is related to marine oil exploitation equipment technical field, including installation disassembly mechanism, the installation disassembly mechanism, the bottom of the installation disassembly mechanism is provided with connecting mechanism, the bottom of the connecting mechanism is provided with clamping mechanism.The application is connected support by mounting plate, forms stable erection installation, sliding guide effect is provided by symmetrically setting guide rail at the bottom of mounting plate, and the bottom of guide rail is provided with bottom sliding groove, sliding block is slidably connected in inner side, side notch is provided in the both sides of guide rail to provide further guiding effect, improve the stability of guiding, the bottom of sliding block is provided with right-angle piece, it is connected by connecting rod between two sliding blocks, and bidirectional adjusting screw is screw-connected in the inner side of connecting rod, so that the rotating handle position of bidirectional adjusting screw one end is conveniently rotated by manual rotation or using spanner, the function of rotation adjustment is realized.

Description

Technical Field

[0001] This invention relates to the field of marine oil extraction equipment technology, specifically to a THRT (Thrust-to-Release) installation and disassembly device for underwater tubing hangers. Background Technology

[0002] In offshore oil and gas extraction, subsea tubing hangers (THRTs) are key components of subsea production systems. Their function is to support the tubing string, seal the annular space between the tubing and casing, suspend the weight of the tubing, and provide a flow path for oil. Currently, the installation and dismantling of traditional THRTs face numerous challenges.

[0003] In the prior art, such as the "Installation and Retrieval Device for Underwater Vertical Christmas Tree Tubing Hanger" with patent application number CN201710028314.6, the device includes: an installation and retrieval device body; multiple pawls arranged circumferentially along the installation and retrieval device body, one end of which can swing relative to the installation and retrieval device body; and a drive sleeve fitted outside the installation and retrieval device body, which can move axially along the installation and retrieval device body. The inner wall of the drive sleeve has an annular protrusion that abuts against the pawls and drives the pawls to swing. The beneficial effect of this invention is that by setting the pawls, the drive sleeve can be locked to the tubing hanger, facilitating the lowering of the tubing hanger using the installation and retrieval device for the underwater vertical Christmas tree tubing hanger. When the hanger is lowered to a set position, the drive sleeve moves upward, unlocking the pawls from the tubing hanger.

[0004] Existing underwater tubing hanger installation and disassembly devices are inconvenient to install in the required locations and require multiple bolts for operation, resulting in low connection efficiency and reduced performance. To address these issues, a new underwater tubing hanger THRT installation and disassembly device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a THRT installation and disassembly device for underwater tubing hangers, in order to solve the problems mentioned in the background art, such as the inconvenience of installation at the required location, the need to fix multiple bolts for operation, the low connection efficiency, and the resulting decline in performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a THRT installation and disassembly device for an underwater tubing hanger, comprising an installation and disassembly mechanism, wherein the bottom of the installation and disassembly mechanism is provided with a connecting mechanism, the bottom of the connecting mechanism is provided with a clamping mechanism, the installation and disassembly mechanism includes a pressing sleeve, the bottom end of the pressing sleeve is connected to a THRT, a sleeve is provided on the outside of the THRT, and a base plate is provided at the bottom of the sleeve;

[0007] The connecting mechanism includes two connecting frames, which are symmetrically sleeved on the outside of the base plate;

[0008] The clamping mechanism includes two mounting plates connected to the bottom of the connecting frame. Guide rails are symmetrically mounted on the bottom of the mounting plates. Sliding blocks are slidably mounted on the inner side of the guide rails. Right-angle pieces are mounted on the bottom of the sliding blocks. A connecting rod is connected between the two sliding blocks. A bidirectional adjusting screw is threaded to the middle of the connecting rod. A rotating handle is provided at one end of the bidirectional adjusting screw.

[0009] Preferably, the guide rail has side slots extending through both sides and a bottom groove at the bottom. The side slots and the bottom groove are connected. The two sides of the sliding block are slidably connected to the inside of the side slots, and the inside of the sliding block is slidably connected to the inside of the bottom groove.

[0010] Preferably, a plurality of anti-slip strips are evenly distributed on one side of the right-angled member, and a support plate is symmetrically fixedly installed on the inner side of the right-angled member.

[0011] Preferably, the connecting frame is provided with connecting heads at both ends, a connecting sleeve is sleeved on the outside of the connecting head, and a limit bolt is installed through the side of the connecting sleeve.

[0012] Preferably, the limiting bolt extends through the side of the connector, and the outer wall of the limiting bolt is threaded with a limiting nut.

[0013] Preferably, a connecting plate is symmetrically fixedly installed on the inner side of the connecting frame, and an arc-shaped ring is fixedly connected to one end of the connecting plate. The connecting plate is set on the top of the base plate, and the arc-shaped ring is symmetrically sleeved on the outer side of the sleeve.

[0014] Preferably, a plurality of first friction blocks are evenly distributed on one side of the connector, an inner support block is provided in the middle of the inner side of the connecting sleeve, and the limiting bolt passes through the inner side of the inner support block.

[0015] Preferably, a plurality of second friction blocks are distributed on both sides of the inner wall of the connecting sleeve, and the first friction blocks and the second friction blocks are distributed alternately.

[0016] Preferably, a torque wrench is provided on the outer side of the pressure sleeve, and the torque wrench has several through holes.

[0017] Preferably, a retaining ring is provided at the top of the sleeve, and the retaining ring is located on the outside of the THRT.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, the mounting plate, as the core load-bearing component, forms the overall foundation through a stable connection with the connecting mechanism, providing solid structural support for subsequent clamping operations and ensuring overall stability during operation. To achieve precise and stable sliding adjustment, the guide rails are fixed to the bottom of the mounting plate in a symmetrical layout. This symmetrical design not only ensures balanced force distribution but also improves guiding accuracy through the synergistic effect of the two guide rails. The guide rail structure has been specifically optimized: the bottom sliding groove serves as the main directional channel, providing an axial movement trajectory for the sliding block; the two sides... The through-hole side groove and the bottom sliding groove are interconnected, forming a multi-directional constraint structure. The inner side of the sliding block is embedded in the bottom sliding groove for longitudinal guidance, while the two sides slide in conjunction with the side groove. This dual-guide design effectively limits the radial offset of the sliding block, completely avoiding the jamming and skew problems that are prone to occur in traditional single-rail guidance, and significantly improving the stability and reliability of the guidance process. The right-angle component integrated at the bottom of the sliding block is a key component that directly performs the clamping action. Its right-angle structure is adapted to the shape characteristics of columnar components such as underwater oil pipe hangers, enabling a close-fitting clamping, further enhancing the clamping effect. For stability, the clamping surface of the right-angle piece is evenly covered with several anti-slip strips made of a high-friction coefficient material. These strips increase the friction of the contact surface, effectively preventing slippage during clamping and ensuring operational safety. For efficient adjustment, the two sliding blocks are linked by a connecting rod. A bidirectional adjusting screw is threaded into the middle of the connecting rod, with opposite threads at both ends. When manually rotated or operated with a wrench, the rotation of the bidirectional adjusting screw is converted into synchronous movement of the two sliding blocks along the guide rail, either in opposite directions, thereby driving... The right-angle fitting completes the clamping or releasing action. This adjustment method eliminates the need for the tedious bolt-fixing steps of traditional installation. Quick clamping and positioning can be achieved with a single adjustment action, which greatly shortens the installation time and significantly improves the work efficiency. It is especially suitable for the rapid installation needs in complex underwater environments. Through optimized guide structure, efficient adjustment mechanism and reliable anti-slip design, this clamping mechanism achieves rapid installation without the need for multiple bolts. While ensuring clamping stability, it greatly improves the convenience and efficiency of THRT installation and disassembly operations of underwater tubing hangers.

[0020] 2. In the design of the connecting mechanism in this invention, it serves as the core transitional component connecting the installation / disassembly mechanism and the clamping mechanism. Through multi-dimensional structural optimization, it achieves a highly efficient and stable connection function. The connecting frame, as the main load-bearing structure, adopts a symmetrical layout design. The connecting plates symmetrically fixed on its inner side form a force-bearing support arm. The arc-shaped ring integrally connected to the end of the connecting plate precisely adapts to the outer contour curvature of the sleeve. The arc-shaped ring wraps around and limits the sleeve through a fitted fit. This arc-shaped constraint structure can effectively disperse the radial force on the sleeve. Combined with the supporting effect of the connecting plate on the top of the base plate, it forms a "hugging + supporting" effect. The dual fixing mode significantly improves the connection stability between the installation / disassembly mechanism and the connecting mechanism, avoiding relative displacement caused by vibration during operation. To further enhance connection strength and convenience, connectors are symmetrically arranged at both ends of the connecting frame. As the key interface for docking with the connecting sleeve, several raised first friction blocks are evenly distributed on the sides of the connector, while several second friction blocks are correspondingly distributed on both sides of the inner wall of the connecting sleeve. The first and second friction blocks adopt an interlocking layout. When the connector and the connecting sleeve are inserted, the two sets of friction blocks fit tightly together through the toothed interlocking structure, significantly increasing the friction coefficient of the contact surface and physically preventing the risk of axial slippage. At the same time, the inner support block set in the middle of the inner side of the connecting sleeve is located between the two connectors, forming a rigid support barrier. During the insertion process, the lateral compression of the connector by the inner support block forces the first friction block and the second friction block to fit more tightly, strengthening the pre-tightening force of the connection. To achieve dual protection of mechanical locking, the limiting bolt installed through the side of the connecting sleeve passes through the pre-set positioning holes of the side wall of the connecting sleeve, the inner support block, and the side of the connector in sequence, forming an axial through rigid constraint. The limiting nut connected by the thread on the outer wall of the limiting bolt applies a continuous pre-tightening force through the tightening operation, firmly locking the connecting sleeve, connector, and inner support block into one unit, effectively resisting interference factors such as vibration and impact in the underwater working environment. This composite connection method not only avoids the cumbersome operation of tightening each bolt individually, but also achieves a significant improvement in connection stability through the synergistic effect of multiple components, ensuring the reliable operation of the entire device under complex underwater working conditions.

[0021] 3. In this invention, during the assembly and operation process design, the device achieves efficient installation and precise disassembly of the underwater tubing hanger (THRT) through modular assembly and collaborative operation mechanisms. During the assembly stage, a high-strength welding process is first used to form a rigid integral structure with the sleeve, fixing ring, and base plate. The sleeve, as the core supporting component, ensures the overall structural load-bearing strength through its welded connection with the fixing ring and base plate, providing a stable reference frame for subsequent operations. The base plate is fixed to the external bearing platform through a pre-designed connection structure, further enhancing the overall stability of the device and preventing displacement deviations caused by vibration or load fluctuations during operation. In the positioning stage before the main THRT installation, hoisting equipment is used... The THRT is precisely lifted to the working position. At this point, the alignment accuracy of the groove on the locking piston and the boss on the fixing plate must be strictly calibrated to ensure a perfect match. The THRT is then slowly lowered into place. This precise alignment step lays the foundation for the reliability of subsequent locking operations. During installation, the torque wrench, as the core power transmission component, has its inner structure precisely matched to the outer contour of the lower locking piston, forming a stable torque transmission channel. Simultaneously, the lower pressure sleeve is pressed tightly against the end face of the lower locking piston with a preset pressure. The working force system is constructed through the synergistic effect of axial pressure and circumferential torque. To enhance torque transmission efficiency, a suitable threaded ring needs to be installed on the torque wrench. The threaded ring is enlarged... Contact friction prevents wrench slippage, ensuring efficient torque transmission to the lower locking piston. During operation, the operator rotates the torque wrench clockwise, providing circumferential rotational power while the lower sleeve applies continuous axial pressure. This dual force drives the lower locking piston axially downward, synchronously driving the upper locking piston of the THRT through a mechanical linkage mechanism to complete the locking action. This ultimately achieves reliable installation of the upper locking piston with the corresponding structure. Disassembly is achieved through a reverse operation mechanism for efficient reset: when the THRT needs to be disassembled, simply turn the torque wrench counterclockwise. In this case, the torque direction is opposite to that during installation. Under the action of the reverse torque, the lower locking piston overcomes the locking force and moves axially upward. The transmission mechanism drives the upper locking piston to release the locking state, completing the disassembly process. The core advantage of this integrated design is that the device can achieve bidirectional operation without replacing core components: the coordinated structure of the torque wrench and the lower pressure sleeve not only meets the torque output and pressure application requirements during installation, but also adapts to the force transmission during disassembly through reverse operation. This significantly reduces the number of tools required for underwater operations and avoids the problem of frequent tool replacements caused by the single function of traditional equipment. At the same time, the precise adaptation of each component and the coordinated design of the force system ensure the stability and reliability of operation in complex underwater environments, significantly improves operational efficiency, and enhances the practical value and feasibility of the device in offshore oil extraction scenarios. Attached Figure Description

[0022] Figure 1 This is a perspective view of a THRT installation and disassembly device for an underwater tubing hanger according to the present invention.

[0023] Figure 2 This is a schematic diagram of another angle of the THRT installation and disassembly device for an underwater oil pipe hanger according to the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of a THRT installation and disassembly device for an underwater tubing hanger according to the present invention.

[0025] Figure 4 This is a schematic diagram of the connection mechanism of a THRT installation and disassembly device for an underwater tubing hanger according to the present invention.

[0026] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the diagram;

[0027] Figure 6 This is an exploded view of the clamping mechanism of the THRT installation and disassembly device for an underwater tubing hanger according to the present invention.

[0028] Figure 7 For the present invention Figure 6 A magnified structural diagram at point B in the diagram.

[0029] In the picture:

[0030] 1. Installation and disassembly mechanism; 101. Pressing sleeve; 102. Torque wrench; 103. Fixing ring; 104. Sleeve; 105. Base plate; 106. THRT; 2. Connection mechanism; 201. Connecting frame; 202. Connecting plate; 203. Arc ring; 204. Connecting head; 205. First friction block; 206. Connecting sleeve; 207. Inner support block; 208. Second friction block; 209. Limit bolt; 210. Limit nut; 3. Clamping mechanism; 301. Mounting plate; 302. Guide rail; 303. Side groove; 304. Bottom sliding groove; 305. Sliding block; 306. Right angle piece; 307. Anti-slip strip; 308. Connecting rod; 309. Two-way adjusting screw; 310. Rotating handle. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: As Figures 1-7As shown, the present invention provides a technical solution: an underwater tubing hanger THRT installation and disassembly device, including an installation and disassembly mechanism 1, a connecting mechanism 2 is provided at the bottom of the installation and disassembly mechanism 1, a clamping mechanism 3 is provided at the bottom of the connecting mechanism 2, the installation and disassembly mechanism 1 includes a pressing sleeve 101, the bottom end of the pressing sleeve 101 is connected to THRT 106, a sleeve 104 is provided on the outside of THRT 106, and a base plate 105 is provided at the bottom of the sleeve 104;

[0033] The connecting mechanism 2 includes two connecting frames 201, which are symmetrically sleeved on the outside of the base plate 105;

[0034] The clamping mechanism 3 includes two mounting plates 301, which are connected to the bottom of the connecting frame 201. Guide rails 302 are symmetrically mounted on the bottom of the mounting plates 301. Sliding blocks 305 are slidably mounted on the inner side of the guide rails 302. Right-angle pieces 306 are mounted on the bottom of the sliding blocks 305. A connecting rod 308 connects the two sliding blocks 305. A bidirectional adjusting screw 309 is threadedly connected to the middle of the connecting rod 308. One end of the bidirectional adjusting screw 309 is provided with a rotating... The handle 310 and the guide rail 302 have side slots 303 through both sides. The bottom of the guide rail 302 has a bottom sliding groove 304. The side slots 303 and the bottom sliding groove 304 are connected. The two sides of the sliding block 305 are slidably connected to the inside of the side slots 303. The inside of the sliding block 305 is slidably connected to the inside of the bottom sliding groove 304. Several anti-slip strips 307 are evenly distributed on one side of the right-angle piece 306. The support plate is symmetrically fixedly installed on the inside of the right-angle piece 306.

[0035] In this embodiment, through modular structural optimization and precise operation logic, efficient installation, stable clamping, and convenient disassembly of the underwater tubing hanger THRT are achieved. The assembly stage is based on rigid connections. First, a high-strength welding process is used to weld the sleeve 104, fixing ring 103, and base plate 105 together, forming a rigid support frame with strong load-bearing capacity. The fixing ring 103 connects the sleeve 104 and the base plate 105, continuously providing structural fixation during subsequent installation and disassembly operations to prevent relative displacement of components. The base plate 105 is secured to the external support platform through a pre-set connection structure, providing a stable foundation for the entire device. Before installation, the THRT 106 needs to be precisely lifted using hoisting equipment to calibrate the alignment accuracy of the locking piston groove and the fixing plate boss. After ensuring a complete match between the groove and the boss, it is slowly lowered into place, establishing a precise benchmark for subsequent locking operations. Installation and disassembly operations achieve efficient bidirectional operation through a synergistic force system: During installation, the inner side of the torque wrench 102 precisely matches and is fixed to the outer contour of the lower locking piston, while the lower pressure sleeve 101 presses tightly against the end face of the lower locking piston with a preset pressure, forming a synergistic force system of "circumferential torque + axial pressure". To enhance torque transmission efficiency, a matching threaded ring is installed on the torque wrench 102 to increase the friction of the contact surface and prevent slippage; when the operator rotates the torque wrench 102 clockwise, the circumferential rotational power and the continuous axial pressure of the lower pressure sleeve 101 work together to drive the lower locking piston to move downward along the axial direction, and the locking installation of the upper locking piston of THRT106 is completed synchronously through mechanical linkage. Disassembly only requires reverse operation: turning the torque wrench 102 counterclockwise, the lower locking piston moves upward along the axial direction under the action of reverse torque, driving the upper locking piston to release the locking state, achieving efficient disassembly. This bidirectional operating logic eliminates the need to replace core tools, significantly reducing the number of tools required for operations and greatly improving operational feasibility in complex underwater environments. The clamping mechanism achieves rapid and stable clamping through an innovative structural design: the mounting plate 301 serves as the load-bearing foundation, forming a stable support structure through a robust connection with the connecting mechanism. The symmetrically arranged guide rails 302 at the bottom employ a "main-secondary cooperative" guiding design. The bottom sliding groove 304 provides a longitudinal main directional channel for the sliding block 305, while the side slots 303 extending through both sides connect to the bottom sliding groove 304, forming a lateral constraint on the sliding block 305. This dual guiding structure effectively limits the radial displacement of the sliding block 305, significantly improving guiding stability. The right-angled piece 306 at the bottom of the sliding block 305 is the direct clamping component. The evenly distributed anti-slip strips 307 on its sides increase the friction of the contact surface, preventing slippage during clamping and enhancing clamping reliability. The two sliding blocks 305 are linked by the connecting rod 308. The connecting rod 308 is threadedly connected to the bidirectional adjusting screw 309 in the middle. By utilizing the reverse thread characteristics at both ends of the screw, the sliding blocks 305 can be driven to move synchronously in opposite directions along the guide rail 302 by manually or by turning the rotating handle 310 at one end, so as to realize the quick clamping or releasing of the right-angle piece 306.This adjustment method eliminates the need for traditional bolts to be tightened one by one; clamping and positioning can be completed with a single adjustment action, greatly improving installation efficiency and meeting the needs of rapid operation in underwater work.

[0036] Example 2: As Figure 4 and Figure 5 As shown, the connecting frame 201 has connecting heads 204 at both ends, and connecting sleeves 206 are sleeved on the outer side of the connecting heads 204. Limiting bolts 209 are installed through the side of the connecting sleeves 206. Limiting bolts 209 pass through the side of the connecting heads 204. Limiting nuts 210 are threadedly connected to the outer wall of the limiting bolts 209. Connecting plates 202 are symmetrically fixedly installed on the inner side of the connecting frame 201. An arc-shaped ring 203 is fixedly connected to one end of the connecting plate 202. The connecting plate 202 is set on the top of the base plate 105. The arc-shaped ring 203 is symmetrically sleeved on the outer side of the sleeve 104. Several first friction blocks 205 are evenly distributed on one side of the connecting head 204. An inner support block 207 is provided in the middle of the inner side of the connecting sleeve 206. The limiting bolts 209 pass through the inner side of the inner support block 207. Several second friction blocks 208 are distributed on both sides of the inner wall of the connecting sleeve 206. The first friction blocks 205 and the second friction blocks 208 are staggered.

[0037] In this embodiment, the connecting mechanism of the device serves as a core transitional component connecting the installation / disassembly mechanism and the clamping mechanism, achieving a high-strength and stable connection through multi-dimensional structural collaboration. The connecting frame 201, as the main load-bearing frame, employs a symmetrical layout to enhance force balance. The symmetrically fixed connecting plates 202 on its inner side form rigid support arms. An integrally connected arc-shaped ring 203 at the end of the connecting plate 202 precisely adapts to the outer contour curvature of the sleeve 104. The arc-shaped ring 203 forms a circumferential constraint on the sleeve 104 through a fitted fit, and, in conjunction with the supporting effect of the connecting plate 202 on the top of the base plate 105, constructs a dual-fixing mode. This effectively disperses the radial load on the sleeve 104, preventing relative displacement caused by vibration during operation and significantly improving the connection stability between the installation / disassembly mechanism and the connecting mechanism. To further enhance connection strength and convenience, connector heads 204 are symmetrically arranged at both ends of the connecting frame 201 as docking interfaces, with several raised first friction blocks 205 evenly distributed on their sides. Correspondingly, several second friction blocks 208 are distributed on both sides of the inner wall of the connecting sleeve 206, and the first friction blocks 205 and second friction blocks 208 adopt an interlocking layout. When the connector head 204 and the connecting sleeve 206 are inserted and connected, the two sets of friction blocks fit tightly together through the toothed interlocking structure, greatly increasing the friction coefficient of the contact surface and physically preventing the risk of axial slippage. At the same time, the inner support block 207 in the middle of the inner side of the connecting sleeve 206 is located between the two connector heads 204, forming a rigid support barrier. During the insertion process, the lateral compression of the connector head 204 by the inner support block 207 forces the first friction blocks 205 and second friction blocks 208 to fit even more tightly, strengthening the connection preload. To achieve dual protection through mechanical locking, a limiting bolt 209, installed through the side of the connecting sleeve 206, passes sequentially through the pre-set positioning holes of the connecting sleeve 206 sidewall, the inner support block 207, and the connector 204, forming a rigid constraint that penetrates axially. The limiting nut 210, threaded to the outer wall of the limiting bolt 209, applies a continuous pre-tightening force through tightening, firmly locking the connecting sleeve 206, connector 204, and inner support block 207 together, effectively resisting vibration, impact, and other interference in the underwater working environment. This composite connection method avoids the cumbersome operation of traditional bolted connections requiring individual tightening, and through the synergistic effect of multiple components, achieves a multi-level improvement in connection stability, ensuring long-term reliable operation of the device under complex underwater conditions.

[0038] Example 3: As Figures 1-3 As shown, a torque wrench 102 is provided on the outer side of the pressure sleeve 101. The torque wrench 102 has several through holes. A retaining ring 103 is provided on the top of the sleeve 104. The retaining ring 103 is located on the outer side of the THRT 106.

[0039] In this embodiment, the torque wrench 102 provides adjustment functionality. The boss on the torque wrench 102 engages with the groove of the lower locking piston, allowing the lower locking piston to rotate. The retaining ring 103 enhances stability after welding, ensuring stable overall structure operation. The pressure sleeve 101, in conjunction with the torque wrench 102, provides pressure during lower locking piston rotation, reducing thread resistance and facilitating piston installation.

[0040] In this invention, the underwater tubing hanger THRT installation and disassembly device, during use, first connects to the support via the mounting plate 301 to form a stable installation. Guide rails 302 are symmetrically arranged at the bottom of the mounting plate 301 to provide sliding guidance. The bottom of the guide rails 302 has a bottom sliding groove 304, which slides the sliding blocks 305 on the inner side. Side grooves 303 on both sides of the guide rails 302 provide further guidance, improving the stability of the guidance. Right-angle pieces 306 are provided at the bottom of the sliding blocks 305. The 05 are connected by a connecting rod 308, and a bidirectional adjusting screw 309 is threaded on the inner side of the connecting rod 308. This allows for easy adjustment by manually rotating or using a wrench to rotate the handle 310 at one end of the bidirectional adjusting screw 309, thus achieving the function of rotation adjustment. This allows the right-angle pieces 306 to move towards each other, facilitating clamping and installation. This makes it easy to install quickly without the need for sequential installation using bolts, improving installation efficiency. Multiple anti-slip strips 307 are distributed on the side of the right-angle piece 306 to improve installation stability.

[0041] Connectors 204 are symmetrically arranged at both ends of the connecting frame 201. A connecting plate 202 is provided on the inner side of the connecting frame 201, and an arc-shaped ring 203 is connected thereto. The arc-shaped ring 203 is fitted onto the outer side of the sleeve 104, facilitating clamping and installation through the sleeve 104 and effectively improving stability. Connectors 204 are fixedly installed at both ends of the connecting frame 201, and several first friction blocks 205 are distributed on the sides of the connectors 204. The connectors 204 are inserted into the connecting sleeve 206, and friction is increased between the first friction blocks 205 and the second friction blocks 208. The connectors 204 are located on both sides of the inner support block 207, which provides a squeezing effect, improving connection stability. A limiting bolt 209 passes through the inner side of the connecting sleeve 206 and the connector 204, and is further limited and fixed by a limiting nut 210, thereby further improving stability.

[0042] During assembly, the sleeve 104, retaining ring 103, and base plate 105 are welded together, and the base plate 105 is connected and fixed. THRT106 is then lifted, and the upper locking piston groove moves down to correspond with the fixing plate boss. The torque wrench 102 is fitted onto the lower locking piston, and the lower pressing sleeve 101 presses against the end face of the lower locking piston. During installation, a threaded ring is installed on the torque wrench 102. The torque wrench 102 is rotated clockwise, while the lower pressing sleeve 101 is pressed down, causing the lower locking piston to move downwards, thus achieving the installation of the upper locking piston of THRT106. During disassembly, the torque wrench 102 is turned counterclockwise, causing the lower locking piston to move upwards, thus achieving the disassembly of the upper locking piston of THRT106.

[0043] 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 THRT installation and disassembly device for an underwater tubing hanger, comprising an installation and disassembly mechanism (1), characterized in that: The installation and disassembly mechanism (1) has a connecting mechanism (2) at its bottom and a clamping mechanism (3) at its bottom. The installation and disassembly mechanism (1) includes a pressing sleeve (101), a THRT (106) connected to the bottom end of the pressing sleeve (101), a sleeve (104) on the outside of the THRT (106), and a base plate (105) at the bottom of the sleeve (104). The connecting mechanism (2) includes two connecting frames (201), which are symmetrically sleeved on the outside of the base plate (105); The clamping mechanism (3) includes two mounting plates (301), which are connected to the bottom of the connecting frame (201). Guide rails (302) are symmetrically mounted on the bottom of the mounting plates (301). Sliding blocks (305) are slidably mounted on the inner side of the guide rails (302). Right-angle pieces (306) are mounted on the bottom of the sliding blocks (305). A connecting rod (308) is connected between the two sliding blocks (305). A bidirectional adjusting screw (309) is threadedly connected to the middle of the connecting rod (308). A rotating handle (310) is provided at one end of the bidirectional adjusting screw (309).

2. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: The guide rail (302) has side slots (303) through both sides, and a bottom slide groove (304) is provided at the bottom of the guide rail (302). The side slots (303) and the bottom slide groove (304) are connected. The two sides of the sliding block (305) are slidably connected to the inside of the side slots (303), and the inside of the sliding block (305) is slidably connected to the inside of the bottom slide groove (304).

3. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: A number of anti-slip strips (307) are evenly distributed on one side of the right-angle piece (306), and a support plate is symmetrically fixedly installed on the inner side of the right-angle piece (306).

4. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: The connecting frame (201) is provided with connectors (204) at both ends, and a connecting sleeve (206) is sleeved on the outside of the connector (204). A limit bolt (209) is installed through the side of the connecting sleeve (206).

5. The underwater tubing hanger THRT installation and disassembly device according to claim 4, characterized in that: The limiting bolt (209) extends through the side of the connector (204), and the outer wall of the limiting bolt (209) is threaded with a limiting nut (210).

6. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: A connecting plate (202) is symmetrically fixedly installed on the inner side of the connecting frame (201). An arc ring (203) is fixedly connected to one end of the connecting plate (202). The connecting plate (202) is set on the top of the base plate (105). The arc ring (203) is symmetrically sleeved on the outer side of the sleeve (104).

7. The underwater tubing hanger THRT installation and disassembly device according to claim 4, characterized in that: A plurality of first friction blocks (205) are evenly distributed on one side of the connector (204), and an inner support block (207) is provided in the middle of the inner side of the connecting sleeve (206). The limiting bolt (209) passes through the inner side of the inner support block (207).

8. The underwater tubing hanger THRT installation and disassembly device according to claim 7, characterized in that: The inner wall of the connecting sleeve (206) has a plurality of second friction blocks (208) distributed on both sides, and the first friction block (205) and the second friction block (208) are staggered.

9. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: A torque wrench (102) is provided on the outer side of the pressure sleeve (101), and the torque wrench (102) has several through holes.

10. The underwater tubing hanger THRT installation and disassembly device according to claim 1, characterized in that: A retaining ring (103) is provided at the top of the sleeve (104), and the retaining ring (103) is located on the outside of the THRT (106).

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