Underwater pipeline connecting device

Abstract

The utility model discloses an underwater pipeline connecting device which comprises a first connecting pipe, a second connecting pipe and a connecting assembly, the first connecting pipe is suitable for being connected with a first external pipeline and communicated with the first external pipeline, and the second connecting pipe is suitable for being connected with a second external pipeline and communicated with the second external pipeline. The connecting assembly comprises a shell, a driving part and a plurality of clamping parts, the shell is arranged on the peripheral side of the first connecting pipe in a sleeving mode and connected with the first connecting pipe, the inner peripheral face of the shell and the outer peripheral face of the first connecting pipe are arranged at intervals in the inside-outside direction to form a mounting cavity, and the driving part is arranged in the mounting cavity and can move relative to the shell in the length direction of the shell; the multiple clamping pieces are all arranged in the mounting cavity and arranged in the circumferential direction of the first connecting pipe at intervals, and one end of each clamping piece is movably connected with the first connecting pipe. The underwater pipeline connecting device has the advantages of being high in connecting efficiency, good in connecting effect and the like.

Description

Technical Field

[0001] The utility model relates to the field of marine oil and gas pipeline connection, in particular to an underwater pipeline connection device. Background Art

[0002] Underwater connectors, as connecting components of underwater production systems, are often used to connect various submarine pipelines and are indispensable equipment for underwater production systems. However, due to the complexity of their working environment, submarine pipelines may be disturbed and damaged by mooring anchors, submarine undercurrents, earthquakes, seabed collapses, and other human and natural factors in the marine environment, which in turn affects the extraction efficiency of underwater production systems. Underwater hydraulic connectors usually operate in extremely harsh environments, such as high loads, dynamic loads, low temperatures, and chemically corrosive environments. Once a pipeline connection leaks or is damaged, it will not only waste oil and gas resources, but also pollute the marine environment, and require downtime for repairs, resulting in huge economic and time losses. Therefore, in the construction of submarine oil and gas production systems and pipeline maintenance, how to reliably connect pipelines and related equipment faces huge challenges.

[0003] In the related art, the underwater connector connection process is complicated and the connection efficiency is low, which cannot meet the current demand for connecting sea pipelines. Utility Model Content

[0004] This utility model is based on the inventor's discovery and understanding of the following facts and problems:

[0005] In the related art, manual docking is used to dock the two pipes. Since the effective working time of divers each dive is very limited in deep water environments, prolonged exposure to high-pressure environments will have serious effects on human health (such as decompression sickness). Although a connecting device is also used to connect the two pipes, manual intervention is also required on the connecting device before the connecting device can connect the two pipes. For example, patent: CN202321462952.6-An underwater pipe connecting device, which passes two external pipes through the first clamp and the second clamp, and then uses a locking member and a hydraulic member to lock the external pipes together, but due to the setting of the locking member, the diver needs to tighten the locking member, resulting in low connection efficiency, and the hydraulic cylinder is set outside the first clamp and the second clamp. The hydraulic cylinder is subjected to long-term erosion by seawater, which will reduce the service life of the hydraulic cylinder.

[0006] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, an embodiment of the present invention provides an underwater pipe connecting device with a simple structure and high connection efficiency.

[0008] According to an embodiment of the utility model, the underwater pipe connecting device includes: a first connecting pipe, the first connecting pipe is suitable for being connected to a first external pipe and communicating with the first external pipe; a second connecting pipe, the second connecting pipe is suitable for being connected to a second external pipe and communicating with the second external pipe; a connecting assembly, the connecting assembly includes a shell, a driving member and a plurality of clamping members, the shell is sleeved on the outer peripheral side of the first connecting pipe and is connected to the first connecting pipe, the inner peripheral surface of the shell and the outer peripheral surface of the first connecting pipe are spaced apart along the inner and outer directions to form an installation cavity, the driving member is arranged in the installation cavity and is movable relative to the shell along the length direction of the shell, and the plurality of clamping members are all arranged in the installation cavity. The clamping member is arranged in a circumferential manner in the cavity and around the first connecting tube, one end of the clamping member is movably connected to the first connecting tube, and the other end of the clamping member is located below the first connecting tube. The connecting device has a first state and a second state. In the first state, the driving member drives the other ends of the multiple clamping members to rotate along the inside of the shell toward the outside of the shell so that the multiple clamping parts are opened. In the second state, the second connecting tube is passed through the shell and is located in communication with the first connecting tube. The driving member drives the other end of the clamping member to rotate along the outside of the shell toward the inside of the shell so that the multiple clamping parts clamp the second connecting tube.

[0009] In some embodiments, the outer circumferential surface of the first connecting tube is provided with a plurality of first mounting grooves, and the plurality of first mounting grooves are arranged at intervals along the circumference of the plurality of first connecting tubes. In the first state and the second state, one ends of the plurality of clamping members are movably arranged in the first mounting grooves in a one-to-one correspondence, and / or, the outer circumferential surface of the second connecting tube is provided with a plurality of second mounting grooves, and the plurality of second mounting grooves are arranged at intervals along the circumference of the second connecting tube. In the second state, the other ends of the plurality of clamping members are arranged in the plurality of second mounting grooves in a one-to-one correspondence.

[0010] In some embodiments, the clamping member includes a first section, a second section, and a third section connected in sequence, the first section is movably arranged in the first mounting groove, the two ends of the second section are respectively connected to the first section and the second section, the driving member is arranged on the outer peripheral side of the second section and is abutted against the second section, in the first state, the driving member is abutted against the first section and the second section, in the second state, the driving member is abutted against the second section and the third section, so that the driving member drives the third section to be arranged in the second mounting groove, the distance between the side of the first mounting groove adjacent to the second connecting tube and the free end of the first connecting tube is L1, the distance between the side of the second mounting groove adjacent to the first connecting tube and the free end of the second connecting tube is L2, and the length of the second section is equal to the sum of L1 and L2.

[0011] In some embodiments, the first segment extends in a direction away from the second segment and is inclined in a direction away from the first connecting tube, and the third segment extends in a direction away from the second segment and is inclined in a direction away from the first connecting tube.

[0012] In some embodiments, a first transition surface is provided between the first section and the second section, the first transition surface is located on the side of the clamping member facing the first connecting tube, the first transition surface extends from the first section toward the second section and is inclined from the inside of the shell toward the outside of the shell, and / or, a second transition surface is provided between the second section and the third section, the second transition surface is located on the side of the clamping member facing the second connecting tube, the second transition surface extends from the second section toward the third section and is inclined from the outside of the shell toward the inside of the shell.

[0013] In some embodiments, the underwater pipe connection device also includes a partition plate, which is arranged in the shell and is sleeved on the outer peripheral side of the first connecting pipe. The inner and outer sides of the partition plate are respectively connected to the shell and the first connecting pipe, so that the partition plate divides the installation cavity into a first cavity and a second cavity that are independent of each other. The free end of the first connecting pipe passes through the first cavity and is located in the second cavity, and the plurality of clamping members, the driving members and the free ends of the second connecting pipe are all located in the second cavity.

[0014] In some embodiments, the underwater pipeline connection device also includes a hydraulic assembly, which includes a piston, a connecting rod and a hydraulic cylinder sleeve. The hydraulic cylinder sleeve is arranged in the first chamber, and the piston is arranged in the first chamber and is movable relative to the height direction of the shell so as to supply oil to the hydraulic cylinder sleeve to drive the piston to move. The two ends of the connecting rod are respectively connected to the piston and the driving member so that the piston drives the driving member to move through the connecting rod.

[0015] In some embodiments, a first groove extending along the circumference of the first connecting pipe is provided at one end of the first connecting pipe facing the second connecting pipe, and a second groove extending along the circumference of the second connecting pipe is provided at one end of the second connecting pipe facing the first connecting pipe. The underwater pipe connecting device also includes a seal, a portion of the seal is passed through one of the first groove and the second groove and is connected to one of the first groove and the second groove, and in the second state, another portion of the seal can be passed through the other of the first groove and the second groove.

[0016] In some embodiments, the seal includes a first part and a second part connected in sequence along the height direction of the shell. In the second state, the first part and the second part are respectively arranged in the first groove and the second groove, and the cross-sectional area of ​​the outer peripheral surface of the first part gradually increases in the direction away from the second connecting tube, and / or the cross-sectional area of ​​the outer peripheral surface of the second part gradually increases in the direction away from the first connecting tube.

[0017] In some embodiments, the underwater pipe connection device also includes a connecting tube, which is arranged at an end of the shell away from the first connecting tube and is connected to the installation cavity. The inner circumferential surface of the connecting tube gradually increases in the direction away from the first connecting tube so that the second connecting tube passes through the connecting tube and extends into the shell.

[0018] The underwater pipe connection device of the embodiment of the utility model is provided with a first connecting pipe, a second connecting pipe and a connecting assembly. Through the cooperation of the clamping member and the driving member of the connecting assembly, the driving member drives the clamping member to open or close to clamp the second connecting pipe. The provision of a hydraulic assembly not only provides clamping power for the clamping member, but also improves the clamping stability of the clamping member, thereby improving the connection efficiency and ensuring the connection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the first state of the underwater pipe connecting device of an embodiment of the present utility model.

[0020] Figure 2 It is a structural schematic diagram of the second state of the underwater pipe connecting device of an embodiment of the present utility model.

[0021] Figure 3 It is a structural schematic diagram of the clamping member of the underwater pipe connecting device according to an embodiment of the present utility model.

[0022] Figure 4 It is a structural schematic diagram of a sealing member of an underwater pipe connecting device according to an embodiment of the present utility model.

[0023] 100. An underwater pipe connection device;

[0024] 1. First connecting pipe; 2. Second connecting pipe; 3. Connecting assembly; 31. Housing; 311. Partition plate; 32. Driving member; 33. Clamping member; 331. First section; 332. Second section; 333. Third section; 334. First transition surface; 335. Second transition surface;

[0025] 4. Hydraulic assembly; 41. Piston; 42. Connecting rod; 45. Hydraulic cylinder sleeve;

[0026] 5. Sealing element; 51; first part; 52. second part; 53. convex ring; 6. connecting tube. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] The underwater pipe connecting device 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0029] like Figure 1-4 As shown, the underwater pipe connecting device 100 according to an embodiment of the present invention includes a first connecting pipe 1 , a second connecting pipe 2 and a connecting assembly 3 .

[0030] The first connecting pipe 1 is suitable for being connected to and communicating with the first external pipe. Figure 1 and Figure 2 As shown, the first connecting pipe 1 is a vertical pipe extending in the up-down direction. The upper end of the first connecting pipe 1 can be fixed to the first external pipe by a fastener and the first connecting pipe 1 is connected to the first external pipe.

[0031] The second connecting pipe 2 is suitable for being connected to and communicating with the second external pipe. Figure 1 and Figure 2 As shown, the second connecting pipe 2 is a vertical pipe extending in the up-down direction. The lower end of the second connecting pipe 2 is connected to the second external pipe through a fastener and the second connecting pipe 2 is in communication with the second external pipe.

[0032] The connecting assembly 3 includes a housing 31, a driving member 32 and a plurality of clamping members 33. The housing 31 is sleeved on the outer peripheral side of the first connecting pipe 1 and is connected to the first connecting pipe 1. The inner peripheral surface of the housing 31 and the outer peripheral surface of the first connecting pipe 1 are spaced apart in the inner and outer directions to form an installation cavity. The driving member 32 is arranged in the installation cavity and is relative to the housing 31 along the length direction of the housing 31 (such as Figure 1 The first connecting tube 1 is provided with a plurality of clamping members 33, each of which is arranged in the installation cavity and is spaced apart circumferentially around the first connecting tube 1. One end of the clamping member 33 is movably connected to the first connecting tube 1, and the other end of the clamping member 33 is located below the first connecting tube 1. The connecting device has a first state and a second state. In the first state, the driving member 32 drives the other end of the plurality of clamping members 33 to rotate along the inside of the shell 31 toward the outside of the shell 31, so that the plurality of clamping parts are opened. In the second state, the second connecting tube 2 is provided in the shell 31 and is connected to the first connecting tube 1. The driving member 32 drives the other end of the clamping member 33 to rotate along the outside of the shell 31 toward the inside of the shell 31, so that the plurality of clamping members 33 clamp the second connecting tube 2. Specifically, as Figure 1 and Figure 2As shown, the shell 31 can be an outer shell extending in the up-down direction, the lower end of the first connecting pipe 1 is passed through the shell 31 and the outer circumferential surface of the first connecting pipe 1 and the inner circumferential surface of the shell 31 are spaced apart to form a mounting cavity, the driving member 32 can be annular and sleeved on the outer circumferential surface of the first connecting pipe 1, the driving member 32 can be movable between a first position and a second position in the up-down direction in the shell 31 (the driving member 32 can be driven by hydraulic pressure, an air pump or an electric motor), the clamping member 33 is provided in the shell 31 and is evenly spaced around the circumference of the lower end of the first connecting pipe 1, the upper end of the clamping member 33 is rotatably matched with the first connecting pipe 1, and the lower end of the clamping member 33 extends out and is located below the first connecting pipe 1, when the first external pipe and the second external pipe need to be connected, the connecting device is in the first state (as shown in FIG. Figure 1 As shown in FIG, the driving member 32 moves upward to the first position to drive the lower end of the clamping member 33 to rotate outward, so that the multiple clamping members 33 are opened. The upper end of the second connecting pipe 2 can be passed through the housing 31 and positioned between the multiple clamping members 33 using an automatic underwater robot. The connecting device is in the second state (as shown in FIG. Figure 2 As shown in the figure, the driving member 32 moves downward to the second position, and the driving member 32 drives the lower ends of the multiple clamping members 33 to rotate inward, so that the multiple clamping members 33 are clamped on the upper end of the second connecting pipe 2, thereby connecting the first external pipe and the second external pipe through the first connecting pipe 1 and the second connecting pipe 2.

[0033] An underwater pipe connecting device according to an embodiment of the present invention is provided with a first connecting pipe 1, a second connecting pipe 2 and a connecting assembly 3. Through the cooperation of the clamping member 33 and the driving member 32 of the connecting assembly 3, the driving member 32 drives the clamping member 33 to open to facilitate the second connecting pipe 2 to pass between the clamping members 33, or the driving member 32 drives the clamping member 33 to close to clamp the second connecting pipe 2, thereby connecting the first connecting pipe 1 and the second connecting pipe 2 together. Compared with the related art, there is no need for a diver to dive into the water to manually intervene in the connecting assembly 3, which improves the connection efficiency of the connecting device and reduces the connection time of the connecting device. In addition, the connecting assembly 3 is arranged in the shell 31, which can protect the connecting assembly 3 from being eroded by seawater, ensure the stability of the connection, and improve the service life of the connecting assembly 3.

[0034] In some embodiments, the outer circumferential surface of the first connecting tube 1 is provided with a plurality of first mounting grooves, which are arranged at intervals along the circumference of the plurality of first connecting tubes 1. In the first state and the second state, one end of the plurality of clamping members 33 is movably arranged in the first mounting grooves in a one-to-one correspondence, and / or, the outer circumferential surface of the second connecting tube 2 is provided with a plurality of second mounting grooves, which are arranged at intervals along the circumference of the second connecting tube 2. In the second state, the other ends of the plurality of clamping members 33 are arranged in the second mounting grooves in a one-to-one correspondence. Specifically, Figure 1 and Figure 2As shown, the lower end of the first connecting tube 1 is provided with a plurality of first mounting grooves spaced along the circumference of the first connecting tube 1, and the upper end of the clamping member 33 is inserted into the first mounting groove and is movable in the first mounting groove, ensuring that the clamping member 33 can flexibly adjust the angle as needed, thereby realizing the action conversion from opening to clamping, and the outer peripheral surface of the upper end of the second connecting tube 2 is provided with second mounting grooves spaced along the circumference of the second connecting tube 2. In the first state, the lower end of the clamping member 33 is located outside the second mounting groove, and in the second state, the lower end of the clamping member 33 is inserted into the second mounting groove, thereby not only improving the clamping force, but also ensuring the tightness and stability of the connection between the clamping member 33 and the second connecting tube 2.

[0035] It is worth noting that the first mounting groove and the second mounting groove may also be one, and the first mounting groove extends along the circumference of the first connecting pipe 1 , and the second mounting groove extends along the circumference of the second connecting pipe 2 .

[0036] In some embodiments, the clamping member 33 includes a first section 331, a second section 332 and a third section 333 connected in sequence, the first section 331 is movably arranged in the first mounting groove, and the two ends of the second section 332 are respectively connected to the first section 331 and the second section 332, and the driving member 32 is arranged on the outer peripheral side of the second section 332 and abuts against the second section 332. In the first state, the driving member 32 abuts against the first section 331 and the second section 332. In the second state, the driving member 32 abuts against the second section 332 and the third section 333, so that the driving member 32 drives the third section 333 to be arranged in the second mounting groove, the distance between the side of the first mounting groove adjacent to the second connecting pipe 2 and the free end of the first connecting pipe 1 is L1, the distance between the side of the second mounting groove adjacent to the first connecting pipe 1 and the free end of the second connecting pipe 2 is L2, and the length of the second section 332 is equal to the sum of L1 and L2.

[0037] Specifically, if Figure 1-Figure 3 As shown, the first section 331 is provided at the upper end of the second section 332 and is connected to the second section 332. The first section 331 is movably provided in the first mounting groove on the first connecting pipe 1 to adjust the rotation angle of the clamping member 33 to adapt to different working states. The second section 332 is provided at the upper end of the third section 333 and is connected to the third section 333. The driving member 32 is sleeved on the outer peripheral side of the second section 332, so that the second section 332 directly bears the pressure from the driving member 32, ensuring that the driving member 32 can effectively transmit force to the first section 331 and the second section 332. In the first state, the driving member 32 moves upward to the second position, so that the driving member 32 is abutted against the first section 331 and the second section 332, thereby causing the third section 333 to move outward. In the second state, the driving member 32 moves downward, so that the driving member 32 is abutted against the second section 332 and the third section 333, thereby driving the third section 333 to move in the groove so that the third section 333 cooperates with the second groove, thereby achieving a firm clamping of the second connecting pipe 2.

[0038] In some embodiments, the first section 331 extends in a direction away from the second section 332 and is inclined in a direction away from the first connecting pipe 1, and the third section 333 extends in a direction away from the second section 332 and is inclined in a direction away from the first connecting pipe 1. Figure 3 As shown, the first section 331 extends from bottom to top and tilts outward, and the third section 333 extends from top to bottom and tilts outward. When the driving member 32 is driven to the first position, the driving member 32 acts on the first section 331 and the second section 332. Since the first section 331 and the third section 333 are both tilted in the direction away from the first connecting tube 1, the first section 331 can be driven to move inward to drive the third section 333 to move outward, providing sufficient space for the insertion of the second connecting tube 2. As the second connecting tube 2 is inserted into place, the driving member 32 moves downward to the second position, gradually applying the force of the driving member 32 to the second section 332 and the third section 333. The third section 333 naturally rotates inward due to the tilted design and is eventually embedded in the second mounting groove, forming a firm mechanical connection, thereby making the setting of the clamping member 33 more reasonable.

[0039] In some embodiments, a first transition surface 334 is provided between the first section 331 and the second section 332. The first transition surface 334 is located on the side of the clamping member 33 facing the first connecting pipe 1. The first transition surface 334 extends from the first section 331 toward the second section 332 and is inclined from the inside of the shell 31 toward the outside of the shell 31. And / or, a second transition surface 335 is provided between the second section 332 and the third section 333. The second transition surface 335 is located on the side of the clamping member 33 facing the second connecting pipe 2. The second transition surface 335 extends from the second section 332 toward the third section 333 and is inclined from the outside of the shell 31 toward the inside of the shell 31. Specifically, as Figure 3 As shown, the inner circumference of the lower end of the first section 331 is a first transition surface 334, which extends from top to bottom and slopes from the inside out. Therefore, when the clamping member 33 needs to transition from an open state to a clamped state, the first transition surface 334 helps the clamping member 33 change its angle more smoothly. The inner circumference of the upper end of the third section 333 is a second transition surface 335, which extends from bottom to top and slopes from the inside out. When the pressure applied by the driving member 32 is effectively transmitted to the third section 333, the second transition surface 335 ensures that the third section 333 can be accurately inserted into the second mounting groove. At the same time, the second transition surface 335 also helps reduce the resistance encountered by the third section 333 entering the second mounting groove, ensuring a smoother clamping process.

[0040] In some embodiments, the underwater pipe connection device 100 further includes a partition plate 311, which is disposed within the housing 31 and sleeved on the outer circumference of the first connecting pipe 1. The inner and outer sides of the partition plate 311 are respectively connected to the housing 31 and the first connecting pipe 1, so that the partition plate 311 divides the installation cavity into a first cavity and a second cavity that are independent of each other. The free end of the first connecting pipe 1 passes through the first cavity and is located in the second cavity. The plurality of clamping members 33, the driving member 32, and the free end of the second connecting pipe 2 are all located in the second cavity. Specifically, as Figure 1 and Figure 2 As shown, the partition plate 311 is annular and is arranged in the shell body 31. The partition plate 311 is sleeved on the outer peripheral side of the first connecting tube 1. The inner and outer side surfaces of the partition plate 311 are fixedly connected to the shell body 31 and the first connecting tube 1 respectively, so that the installation cavity is divided into a first cavity and a second cavity by the partition plate 311, and the partition plate 311 is arranged in the shell body 31, specifically in the middle part or near the lower end of the first connecting tube 1, to ensure that the partition plate 311 can reasonably divide the installation cavity into two parts. Therefore, through such a layout, the partition plate 311 can achieve effective management of the space without affecting the normal operation of other components. The upper end of the first connecting tube 1 is located in the first cavity, and the lower end of the first connecting tube 1 is located in the second cavity. The main activity area of ​​the clamping member 33, the driving member 32 and the free end of the second connecting tube 2, the design of the second cavity takes into account sufficient operating space to ensure that the clamping member 33 can smoothly perform the action transition from opening to clamping.

[0041] In some embodiments, the underwater pipe connection device 100 further includes a hydraulic assembly 4 disposed in the first chamber, the hydraulic assembly 4 including a piston 41, a connecting rod 42 and a hydraulic cylinder sleeve 45. The hydraulic cylinder sleeve 45 is disposed in the first chamber, the piston 41 is disposed in the first chamber and is movable in a height direction relative to the housing 31 so as to supply oil to the hydraulic cylinder sleeve 45 to drive the piston 41 to move. The two ends of the connecting rod 42 are respectively connected to the piston 41 and the driving member 32 so that the piston 41 drives the driving member 32 to move through the connecting rod 42. Specifically, as Figure 1 and Figure 2As shown, the hydraulic cylinder casing 45 is sleeved in the first cavity and has a first oil passage and a second oil passage in the hydraulic cylinder casing 45. The outlet of the first oil passage is arranged adjacent to the top of the hydraulic cylinder casing 45, and the outlet of the second oil passage is arranged adjacent to the bottom of the hydraulic cylinder casing 45, so that the hydraulic oil flows into the hydraulic cylinder casing 45 through the first oil passage or the second oil passage. The piston 41 is arranged in the hydraulic cylinder casing 45 and the outer circumferential surface of the piston 41 is fitted with the inner circumferential surface of the hydraulic cylinder casing 45 through a sealing ring. The connecting rod 42 extends in the up and down direction and the upper end of the connecting rod 42 is located in the first cavity and connected to the piston 41. The lower end of the connecting rod 42 passes through the partition plate 311 and is located in the second cavity and connected to the driving member 32. When the driving member 32 needs to move upward, the hydraulic oil can flow into the hydraulic cylinder casing 45 through the second oil passage to drive the piston 41 to move upward. Thereby, the driving member 32 is driven to move upward through the connecting rod 42. When the driving member 32 needs to move downward, the hydraulic oil can flow into the hydraulic cylinder sleeve 45 through the first oil channel to drive the piston 41 to move downward, thereby driving the driving member 32 to move downward through the connecting rod 42. Thus, the driving member 32 is provided with driving force by the hydraulic component 4, ensuring that the movement of the driving member 32 and the clamping member 33 is both rapid and powerful, thereby improving the efficiency of the entire connection process. The closedness and stability of the hydraulic system reduce potential safety hazards, such as leakage or loss of control, and are also convenient for maintenance and inspection. It can work stably under different working conditions and meet the strict requirements of marine engineering for equipment performance. In addition, the hydraulic component 4 is arranged in the shell 31, which can protect the hydraulic component 4 from being eroded by seawater and improve the service life of the hydraulic component 4.

[0042] In some embodiments, the first connecting pipe 1 is provided with a first groove extending along the circumference of the first connecting pipe 1 at one end thereof facing the second connecting pipe 2, and the second connecting pipe 2 is provided with a second groove extending along the circumference of the second connecting pipe 2 at one end thereof facing the first connecting pipe 1. The underwater pipe connection device 100 further includes a sealing member 5, a portion of the sealing member 5 being disposed in and connected to one of the first groove and the second groove. In the second state, another portion of the sealing member 5 can be disposed in the other of the first groove and the second groove. Specifically, as Figure 1 、 Figure 2 and Figure 3As shown, a first groove is provided on the lower end surface of the first connecting pipe 1, and a second groove is provided on the upper end surface of the second connecting pipe 2, and both the first groove and the second groove are annular. The sealing member 5 is a sealing ring and can be set according to actual conditions. For example, the upper half of the sealing member 5 is set in the first groove by a fastener and the lower half of the sealing member 5 extends out of the first groove. When the second connecting pipe 2 is extended into the shell 31 and abuts against the first connecting pipe 1, the lower half of the sealing member 5 is embedded in the second groove, or the lower half of the sealing member 5 is set in the second groove by a fastener and the upper half of the sealing member 5 extends out of the second groove. When the second connecting pipe 2 is extended into the shell 31 and abuts against the first connecting pipe 1, the upper half of the sealing member 5 is embedded in the first groove. Thus, through the cooperation of the first groove, the second groove and the sealing member 5, an efficient sealing effect is achieved, ensuring the reliable operation of the connecting device under extreme conditions such as high pressure and low temperature, reducing the risk of fluid leakage, and improving the safety and stability of the entire connecting device.

[0043] In some embodiments, the seal 5 includes a first portion 51 and a second portion 52 sequentially connected along the height direction of the housing 31. In the second state, the first portion 51 and the second portion 52 are respectively arranged in the first groove and the second groove, and the cross-sectional area of ​​the outer peripheral surface of the first portion 51 gradually increases in the direction away from the second connecting pipe 2, and / or the cross-sectional area of ​​the outer peripheral surface of the first portion 51 gradually increases in the direction away from the first connecting pipe 1. Specifically, as Figure 4 As shown, the first part 51 is the upper half of the seal 5, and the second part 52 is the lower half of the seal 5, and the first part 51 and the second part 52 are symmetrically arranged in the up and down directions. The first part 51 can be arranged in the first groove, and the second part 52 can be arranged in the second groove. The first part 51 and the second part 52 are both trapezoidal with a cross-section gradually decreasing from bottom to top. Therefore, through the arrangement of the first part 51 and the second part 52, the first part 51 has a certain self-guiding ability when inserted into the first groove, or the second part 52 is inserted into the second groove, so that the first part 51 and the second part 52 are smoothly embedded in the corresponding first groove and second groove, reducing the installation difficulty of the seal 5 and improving the operating efficiency. In addition, the gradual cross-sectional area design of the first part 51 and the second part 52 also enables the seal 5 to adapt to the size differences or slight deviations between the pipes within a certain range, ensuring that the first connecting pipe 1 and the second management pipe can achieve reliable sealing even when they are not completely aligned.

[0044] In some embodiments, the seal 5 further includes a protruding ring 53 formed between the first portion 51 and the second portion 52 and extending along the circumference of the seal 5. The protruding ring 53 is connected to the first connecting pipe 1 or the second connecting pipe 2 via fasteners. Thus, the protruding ring 53 provides a mounting base for the seal 5.

[0045] In some embodiments, the underwater pipe connection device 100 further includes a connecting tube 6, which is provided at one end of the housing 31 away from the first connecting tube 1 and communicates with the installation cavity. The inner circumference of the connecting tube 6 gradually increases in a direction away from the first connecting tube 1 so that the second connecting tube 2 passes through the connecting tube 6 and extends into the housing 31. Specifically, Figure 1 and Figure 2 As shown, the connecting tube 6 is provided at the lower end of the shell 31 and is connected to the shell 31. The connecting tube 6 is funnel-shaped with an inner circumference gradually increasing from top to bottom. The second connecting tube 2 gradually approaches and begins to be inserted into the connecting tube 6. The conical design of the connecting tube 6 will guide the second connecting tube 2 to move into the shell 31 until it completely enters the interior of the shell 31 and docks with the first connecting tube 1, ensuring the efficiency and accuracy of the insertion of the second connecting tube 2 and reducing the operational difficulties caused by misalignment or angle deviation.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] In the present invention, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An underwater pipe connection device, characterized in that: include: a first connecting pipe, the first connecting pipe being adapted to be connected to and in communication with a first external pipe; a second connecting pipe, the second connecting pipe being adapted to be connected to and in communication with a second external pipe; The connecting assembly includes a shell, a driving member and a plurality of clamping members, the shell being sleeved on the outer circumference of the first connecting tube and connected to the first connecting tube, the inner circumferential surface of the shell and the outer circumferential surface of the first connecting tube being spaced apart along the inner and outer directions to form an installation cavity, the driving member being arranged in the installation cavity and being movable relative to the shell along the length direction of the shell, the plurality of clamping members being arranged in the installation cavity and spaced apart around the circumference of the first connecting tube, one end of the clamping member being movably connected to the first connecting tube, the other end of the clamping member being located below the first connecting tube, the connecting device having a first state and a second state, in the first state, the driving member drives the other ends of the plurality of clamping members to rotate along the direction of the interior of the shell toward the exterior of the shell so that the plurality of clamping parts are opened, in the second state, the second connecting tube is passed through the shell and is connected to the first connecting tube, the driving member drives the other end of the clamping member to rotate along the direction of the exterior of the shell toward the interior of the shell so that the plurality of clamping members clamp the second connecting tube.

2. The underwater pipe connection device according to claim 1, characterized in that: The outer circumferential surface of the first connecting tube is provided with a plurality of first mounting grooves, and the plurality of first mounting grooves are arranged at intervals along the circumference of the plurality of first connecting tubes. In the first state and the second state, one ends of the plurality of clamping members are movably arranged in the first mounting grooves in a one-to-one correspondence, and / or, the outer circumferential surface of the second connecting tube is provided with a plurality of second mounting grooves, and the plurality of second mounting grooves are arranged at intervals along the circumference of the second connecting tube. In the second state, the other ends of the plurality of clamping members are arranged in the second mounting grooves in a one-to-one correspondence.

3. The underwater pipe connection device according to claim 2, characterized in that: The clamping member includes a first section, a second section and a third section connected in sequence, the first section is movably arranged in the first mounting groove, and the two ends of the second section are respectively connected to the first section and the second section, the driving member is arranged on the outer peripheral side of the second section and abuts against the second section, in the first state, the driving member abuts against the first section and the second section, and in the second state, the driving member abuts against the second section and the third section, so that the driving member drives the third section to be arranged in the second mounting groove, the distance between the side of the first mounting groove adjacent to the second connecting tube and the free end of the first connecting tube is L1, the distance between the side of the second mounting groove adjacent to the first connecting tube and the free end of the second connecting tube is L2, and the length of the second section is equal to the sum of L1 and L2.

4. The underwater pipe connection device according to claim 3, characterized in that: The first section extends in a direction away from the second section and is inclined in a direction away from the first connecting tube. The third section extends in a direction away from the second section and is inclined in a direction away from the first connecting tube.

5. The underwater pipe connection device according to claim 3, characterized in that: A first transition surface is provided between the first section and the second section, the first transition surface is located on the side of the clamping member facing the first connecting tube, the first transition surface extends from the first section toward the second section and is inclined from the inside of the shell toward the outside of the shell, and / or a second transition surface is provided between the second section and the third section, the second transition surface is located on the side of the clamping member facing the second connecting tube, the second transition surface extends from the second section toward the third section and is inclined from the outside of the shell toward the inside of the shell.

6. The underwater pipe connection device according to claim 1, characterized in that: It also includes a partition plate, which is arranged in the shell and sleeved on the outer peripheral side of the first connecting tube. The inner and outer sides of the partition plate are respectively connected to the shell and the first connecting tube, so that the partition plate divides the installation cavity into a first cavity and a second cavity that are independent of each other. The free end of the first connecting tube passes through the first cavity and is located in the second cavity. The plurality of clamping members, the driving member and the free end of the second connecting tube are all located in the second cavity.

7. The underwater pipe connection device according to claim 6, characterized in that: It also includes a hydraulic assembly, which includes a piston, a connecting rod and a hydraulic cylinder sleeve. The hydraulic cylinder sleeve is arranged in the first chamber. The piston is arranged in the first chamber and is movable relative to the height direction of the housing so as to supply oil to the hydraulic cylinder sleeve to drive the piston to move. The two ends of the connecting rod are respectively connected to the piston and the driving member so that the piston drives the driving member to move through the connecting rod.

8. The underwater pipe connection device according to claim 1, characterized in that: The first connecting pipe is provided with a first groove extending along the circumference of the first connecting pipe at one end facing the second connecting pipe, and the second connecting pipe is provided with a second groove extending along the circumference of the second connecting pipe at one end facing the first connecting pipe. The underwater pipe connecting device also includes a seal, a portion of the seal is passed through one of the first groove and the second groove and is connected to one of the first groove and the second groove. In the second state, another portion of the seal can be passed through the other of the first groove and the second groove.

9. The underwater pipe connection device according to claim 8, characterized in that: The seal includes a first part and a second part connected in sequence along the height direction of the shell. In the second state, the first part and the second part are respectively arranged in the first groove and the second groove, and the cross-sectional area of ​​the outer peripheral surface of the first part gradually increases in the direction away from the second connecting pipe, and / or the cross-sectional area of ​​the outer peripheral surface of the second part gradually increases in the direction away from the first connecting pipe.

10. The underwater pipe connection device according to claim 1, characterized in that: It also includes a connecting tube, which is arranged at one end of the shell away from the first connecting tube and is connected to the installation cavity. The inner circumference of the connecting tube gradually increases in the direction away from the first connecting tube so that the second connecting tube passes through the connecting tube and extends into the shell.

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