Jacket foundation connection node structure and jacket foundation construction method

Abstract

The invention belongs to the technical field of offshore wind power generation, and discloses a jacket foundation connection node structure and a jacket foundation construction method. The jacket foundation connecting node structure comprises a lining pipe, an outer sleeve, a first connecting mechanism and a second connecting mechanism, wherein the lining pipe is used for being connected with an upper jacket; the outer sleeve is used for being connected with a lower jacket, and the lining pipe is inserted into the outer sleeve. The first connecting mechanism comprises a mounting seat and a bolt, the mounting seat is fixedly connected to the lining pipe, and a slot matched with the bolt is formed in the outer sleeve; the second connecting mechanism comprises a clamping block and a driving part which are connected with each other, the clamping block and the mounting base are arranged on the lining pipe at an interval, a baffle is arranged on the inner wall of the outer sleeve, the clamping block abuts against the baffle, and the baffle abuts against the outer wall of the lining pipe; the driving piece can drive the clamping block to be disengaged from the baffle. According to the jacket foundation construction method, the lining pipe and the outer sleeve can be quickly connected and are convenient to disassemble, and the repeated utilization rate of the jacket foundation is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to a conductor frame foundation connection node structure and a conductor frame foundation construction method. Background Art

[0002] At present, the construction of offshore wind farms is gradually advancing towards the deep sea. Combined with the development of offshore wind power, the jacket foundation has been widely developed in the deep sea due to its spatial truss structure. However, the jacket foundation has the following problems in the promotion process: First, due to the increase in water depth, the overall height and weight of the structure also increase accordingly. The height of the jacket body can reach 60-80m, and the weight will exceed 3,000 tons. It is difficult to transport and hoist the structure as a whole. Second, under deep-water conditions, if the traditional pile-type jacket foundation commonly used in offshore oil and gas platforms is used, a longer pile driver is required for piling operations. The piling construction is difficult, the construction time is long, and the operation window period is high. It is difficult to meet the requirements of large-scale development of deep-sea offshore wind power. Third, the existing pile-type jacket foundation adopts grouting connection, and underwater cutting is required for dismantling, which makes construction more difficult and it is difficult to reuse the jacket foundation.

[0003] Therefore, it is urgent to design a conductor frame connection node structure to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a conductor frame foundation connection node structure and a conductor frame foundation construction method, which are convenient for installation and disassembly of the conductor frame foundation and improve the reuse rate of the conductor frame foundation.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The jacket foundation connection node structure includes:

[0007] An inner liner pipe, the inner liner pipe is used to be connected to the upper conductor pipe frame;

[0008] An outer sleeve, the outer sleeve is used to connect with the lower pipe frame, the inner diameter of the outer sleeve is larger than the outer diameter of the inner liner, and the inner liner is inserted in the outer sleeve;

[0009] A first connection mechanism, the first connection mechanism comprises a mounting seat and a latch movably arranged on the mounting seat, the mounting seat is fixedly connected to the inner liner tube, the outer sleeve is provided with a slot matching the latch, and the latch is inserted into the slot;

[0010] A second connection mechanism, the second connection mechanism comprises a connected clamping block and a driving member, the clamping block and the mounting seat are spaced apart on the inner lining tube along the axial direction of the inner lining tube, a baffle is provided on the inner wall of the outer sleeve, the clamping block abuts against the lower surface of the baffle along the axial direction of the inner lining tube, and the baffle abuts against the outer wall of the inner lining tube;

[0011] The driving member can drive the clamping block to move along the inner liner tube to break away from the contact with the baffle.

[0012] Preferably, a plurality of the first connection mechanisms are provided, and the plurality of the first connection mechanisms are evenly spaced along the circumference of the liner pipe;

[0013] A plurality of the slots are provided corresponding to the first connection mechanisms.

[0014] Preferably, the first connection mechanism further comprises an electromagnet and a permanent magnet, one of the electromagnet and the permanent magnet is connected to the latch, and the other of the electromagnet and the permanent magnet is fixedly disposed on the mounting seat;

[0015] When the electromagnet is energized, it can attract the permanent magnet to drive the latch closer, so that the latch is disengaged from the slot.

[0016] Preferably, the first connecting mechanism further comprises a first elastic member, the first elastic member is disposed on the mounting seat and connected to the latch, and the first elastic member is configured to drive the latch to be inserted into the slot.

[0017] Preferably, the clamping block is provided in plurality, and the plurality of clamping blocks are evenly spaced along the circumference of the liner pipe;

[0018] The baffle ring is arranged on the inner wall of the outer sleeve.

[0019] Preferably, the second connecting mechanism also includes a transmission assembly corresponding to the multiple clamping blocks one by one, the driving member is arranged at the center of the end of the liner tube, the clamping block is connected to the driving member through the transmission assembly, and the driving member can drive the clamping block away from the baffle along the radial direction of the liner tube.

[0020] Preferably, the second connecting mechanism further comprises a second elastic member, the second elastic member is disposed between the clamping block and the driving member, and the second elastic member is configured to drive the clamping block to approach the baffle along the radial direction of the liner tube.

[0021] Preferably, a sealing plate for sealing off seawater is provided in the outer casing, and the sealing plate is arranged at an end of the outer casing close to the lower conductor frame.

[0022] Preferably, the slot is provided at an end of the outer sleeve close to the upper conductor frame, and the clamping block is provided at an end of the inner liner close to the lower conductor frame.

[0023] The jacket foundation construction method, using the jacket foundation connection node structure, comprises the following steps:

[0024] S1, hoisting the lower jacket connected to the outer casing to a designated position on the seabed and fixing it;

[0025] S2, hanging the upper jacket connected with the inner liner onto the lower jacket, and inserting the inner liner into the outer jacket;

[0026] S3, inserting the latch into the slot, and placing the block against the baffle along the axial direction of the liner tube.

[0027] The beneficial effects of the present invention are:

[0028] The present invention provides a basic connection node structure for the catheter rack, wherein the inner liner is inserted into the outer sleeve, a mounting seat is fixedly connected to the inner liner, and a latch is movably provided on the mounting seat. Since a slot matching the latch is provided on the outer sleeve and the latch is inserted in the slot, the inner liner is fixedly connected to the outer sleeve through a first connection mechanism and prevented from rotating in the circumferential direction. Since a clamping block is also provided on the inner liner, a baffle is provided on the inner wall of the outer sleeve, the clamping block is clamped on the lower surface of the baffle along the axial direction of the inner liner, and the baffle abuts against the outer wall of the inner liner, so that the inner liner can be fixed to the outer sleeve in the axial and radial directions. Since the clamping block and the mounting seat are spaced apart along the axial direction of the inner liner, the second connection mechanism and the first connection mechanism The two structures cooperate with each other, and the two together connect and fix the inner liner tube and the outer sleeve, thereby improving the connection stability between the inner liner tube and the outer sleeve; because the driving member of the second connecting mechanism can drive the clamping block to move away from the baffle along the radial direction of the inner liner tube to make the clamping block break away from the contact with the baffle, and at the same time, because the pin is movably arranged on the mounting seat, the pin can be moved to disengage from the slot, so that the first connecting mechanism and the second connecting mechanism can both be disconnected from the outer sleeve, thereby realizing rapid disassembly of the inner liner tube and the outer sleeve, and the inner liner tube and the outer sleeve can be completely separated without using cutting to destroy the foundation of the conductor rack, which greatly reduces the difficulty of disassembly of the conductor rack foundation and improves the reuse rate of the conductor rack foundation.

[0029] By using the conductor frame foundation construction method, a detachable connection between the inner liner and the outer casing can be achieved by inserting the pin in the first connecting mechanism into the slot of the outer casing and blocking the block of the second connecting mechanism on the lower surface of the baffle of the outer casing, thereby improving the construction efficiency of the conductor frame foundation; and the inner liner and the outer casing can be completely separated without destroying the conductor frame foundation by cutting, which greatly reduces the difficulty of disassembling the conductor frame foundation and improves the reuse rate of the conductor frame foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a jacket foundation provided by a specific embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of assembling the inner liner pipe and the outer sleeve provided in a specific embodiment of the present invention;

[0032] Figure 3 is an exploded view of a jacket foundation connection node structure provided by a specific embodiment of the present invention;

[0033] Figure 4 is a structural schematic diagram of a first connecting mechanism provided in a specific embodiment of the present invention;

[0034] Figure 5 It is a cross-sectional view of a jacket foundation connection node structure provided in a specific embodiment of the present invention.

[0035] In the figure:

[0036] 100-upper conductor frame;

[0037] 200-lower conductor frame;

[0038] 300-Suction cylinder;

[0039] 1- liner pipe; 11- bottom end plate; 12- surrounding tube;

[0040] 2-outer sleeve; 21-baffle;

[0041] 3-first connecting mechanism; 31-mounting seat; 32-pin; 33-electromagnet; 34-permanent magnet; 35-first elastic member; 36-conduction block; 37-guide rod;

[0042] 4-second connecting mechanism; 41-block; 42-driving member; 43-transmission assembly; 431-first connecting rod; 432-second connecting rod; 44-second elastic member;

[0043] 5-Seal plate. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] like Figure 1 , Figure 4 as well as Figure 5As shown, the present invention provides a basic connection node structure of a conductor frame, which includes an inner liner 1, an outer sleeve 2, a first connection mechanism 3 and a second connection mechanism 4. The inner liner 1 is used to connect with the upper conductor frame 100; the outer sleeve 2 is used to connect with the lower conductor frame 200, the inner diameter of the outer sleeve 2 is larger than the outer diameter of the inner liner 1, and the inner liner 1 is inserted into the outer sleeve 2; the first connection mechanism 3 includes a mounting seat 31 and a pin 32 movably arranged on the mounting seat 31, and the mounting seat 31 is fixedly connected to the inner liner On the tube 1, a slot matching the pin 32 is provided on the outer sleeve 2, and the pin 32 is inserted in the slot; the second connecting mechanism 4 includes a connected block 41 and a driving member 42, along the axial direction of the inner liner tube 1, the block 41 and the mounting seat 31 are spaced apart on the inner liner tube 1, and a baffle 21 is provided on the inner wall of the outer sleeve 2, the block 41 abuts against the lower surface of the baffle 21 along the axial direction of the inner liner tube 1, and the baffle 21 abuts against the outer wall of the inner liner tube 1; the driving member 42 can drive the block 41 to move along the inner liner tube 1 to break away from the contact with the baffle 21. In this embodiment, the outer diameter of the inner liner tube 1 is smaller than the inner diameter of the outer sleeve 2, and the inner liner tube 1 is inserted in the outer sleeve 2; the mounting seat 31 of the first connecting mechanism 3 is fixedly connected to the inner liner tube 1, and a latch 32 is movably provided on the mounting seat 31. Since a slot matching the latch 32 is provided on the outer sleeve 2 and the latch 32 is inserted in the slot, the inner liner tube 1 is fixedly connected to the outer sleeve 2 through the first connecting mechanism 3 and prevented from rotating in the circumferential direction; since a clamping block 41 is also provided on the inner liner tube 1, and a baffle 21 is provided on the inner wall of the outer sleeve 2, and the clamping block 41 is clamped on the lower surface of the baffle 21 along the axial direction of the inner liner tube 1, the inner liner tube 1 can be fixed to the outer sleeve 2 in the axial and radial directions; since the clamping block 41 and the mounting seat 31 are spaced apart along the axial direction of the inner liner tube 1, the second connecting mechanism 4 and the first The connecting mechanism 3 cooperates with each other, and the two together connect and fix the inner liner tube 1 and the outer sleeve 2, thereby improving the connection stability of the inner liner tube 1 and the outer sleeve 2; because the driving member 42 of the second connecting mechanism 4 can drive the block 41 to move away from the baffle 21 along the radial direction of the inner liner tube 1, so that the block 41 is out of contact with the baffle 21, and at the same time, because the pin 32 is movably arranged on the mounting seat 31, the pin 32 can be moved to make the pin 32 disengaged from the slot, so that the first connecting mechanism 3 and the second connecting mechanism 4 can both be disconnected from the outer sleeve 2, thereby realizing the rapid disassembly of the inner liner tube 1 and the outer sleeve 2, and the inner liner tube 1 and the outer sleeve 2 can be completely separated without using cutting to destroy the foundation of the catheter frame, which greatly reduces the difficulty of disassembly of the catheter frame foundation and improves the reuse rate of the catheter frame foundation.Specifically, the inner liner 1 and the outer sleeve 2 are both hollow cylindrical structures. The inner liner 1 is arranged at the bottom end of the upper conductor frame 100, and the outer sleeve 2 is arranged at the top end of the lower conductor frame 200. The upper conductor frame 100 and the lower conductor frame 200 are connected and fixed through the conductor frame foundation connection node structure; during installation, the inner liner 1 is inserted into the inside of the outer sleeve 2. When the two are assembled in place, the staff moves the pin 32 on the mounting seat 31 to insert it into the slot. Since the slot matches the pin 32, the inner liner 1 is connected and fixed to the outer sleeve 2 through the first connecting mechanism 3; at the same time, the staff moves the block 41 of the second connecting mechanism 4 along the radial direction of the inner liner 1 to extend into the space below the baffle 21. At this time, the block 41 abuts against the lower surface of the baffle 21 along the axial direction of the inner liner 1, and the end of the block 41 abuts against the inner wall of the outer sleeve 2, which further ensures the stability of the connection between the inner liner 1 and the outer sleeve 2 in the axial and radial directions.

[0049] Specifically, the inner lining tube 1 and the outer casing 2 are respectively provided with an upper cable pipe and a lower cable pipe. After the inner lining tube 1 and the outer casing 2 are assembled, the upper cable pipe and the lower cable pipe are plugged into each other. The upper cable pipe and the lower cable pipe are used for passing cables to transmit electricity. Both the upper cable pipe and the lower cable pipe are located inside the pipeline, which can prevent seawater erosion and thus extend the service life.

[0050] Furthermore, if Figure 2 and Figure 3 As shown, a plurality of first connection mechanisms 3 are provided, and the plurality of first connection mechanisms 3 are evenly spaced along the circumference of the inner liner tube 1; a plurality of slots are provided corresponding to the first connection mechanisms 3. In this embodiment, the inner liner tube 1 is a round tube, and a plurality of mounting seats 31 are evenly arranged along the circumference of the inner liner tube 1, thereby ensuring the stability of the connection between the inner liner tube 1 and the outer sleeve 2 at various positions.

[0051] Specifically, Figure 4 As shown, the first connection mechanism 3 also includes an electromagnet 33 and a permanent magnet 34, one of which is connected to the pin 32, and the other of which is fixedly arranged on the mounting seat 31; the electromagnet 33 is energized to attract the permanent magnet 34 to drive the pin 32 to approach, so that the pin 32 is disengaged from the slot. In this embodiment, the electromagnet 33 is a commonly used electromagnetic device in the art, which can generate magnetic force after being energized, and attract the permanent magnet 34 arranged on the mounting seat 31, so that the pin 32 is driven to move out of the slot under the action of the magnetic force to disconnect the connection between the first connection mechanism 3 and the outer sleeve 2. Specifically, the electromagnet 33 is connected to a powered wire, and the other end of the wire is connected to a power supply on the operating platform of the catheter frame foundation, so that the staff can remotely control the movement of the pin 32, which greatly reduces the difficulty of disassembly of the catheter frame foundation in the later stage.

[0052] Specifically, Figure 4 As shown, the first connection mechanism 3 further includes a first elastic member 35 , which is disposed on the mounting seat 31 and connected to the latch 32 , and the first elastic member 35 is configured to drive the latch 32 to be inserted into the slot. In this embodiment, the mounting seat 31 is an L-shaped structure with an L-shaped slide groove arranged inside. The L-shaped slide groove is composed of a vertical first slide and a horizontal second slide. The latch 32 is slidably arranged in the second slide. The first connecting mechanism 3 also includes a conduction block 36 slidably arranged in the first slide, and the conduction block 36 is connected to the latch 32 through a guide rod 37; the electromagnet 33 is fixed to the top of the first slide, and a pressure plate is fixedly arranged in the first slide. The permanent magnet 34 is slidably arranged in the first slide and connected to the conduction block 36. The first elastic member 35 is a compression spring. The first elastic member 35 is arranged in the first slide and its two ends are respectively abutted against the conduction block 36 and the pressure plate; when connecting the inner liner 1 and the outer sleeve 2, the specific actions of the various parts of the first connecting mechanism 3 are as follows: the staff energizes the electromagnet 33, and the permanent magnet 34 moves upward along the first slide under the magnetic force of the electromagnet 33, and the conduction block 36 also slides upward along the first slide following the permanent magnet 34, and the latch 32 is moved upward along the first slide through the guide rod 37. When the rod 37 is driven along the second slideway to approach the first slideway, the pin 32 contracts to ensure that the inner liner 1 can be smoothly inserted into the outer sleeve 2. During this process, the first elastic member 35 is in a compressed state; when the inner liner 1 is inserted into the designated installation position in the outer sleeve 2, the staff stops energizing the electromagnet 33. At this time, the conductive block 36 slides downward along the first slideway under the elastic force of the first elastic member 35, and the pin 32 is also pushed by the guide rod 37 to move along the second slideway away from the first slideway and inserted into the slot until the conductive block 36 slides to the bottom of the first slideway. At this time, the pin 32 is inserted into the slot and rests on the bottom of the slot. At this time, the conductive block 36 is located at the bottom of the first slideway and cannot move along the second slideway under the action of external force. Therefore, the conductive block 36, the guide rod 37, the pin 32 and the mounting seat 31 form a self-locking structure to prevent the pin 32 from falling out of the slot under the action of external force, thereby ensuring the reliability of the connection between the first connecting mechanism 3 and the outer sleeve 2.

[0053] Furthermore, if Figure 3 and Figure 5 As shown, there are multiple clamping blocks 41, and the multiple clamping blocks 41 are evenly arranged along the circumference of the inner liner 1; the baffle 21 is arranged on the inner wall of the outer sleeve 2. In this embodiment, the baffle 21 is an annular structure, and the inner diameter of the baffle 21 matches the outer diameter of the inner liner 1. The baffle 21 is fixedly arranged on the inner wall of the outer sleeve 2, and the inner liner 1 is inserted into the inner circle of the baffle 21; there are multiple clamping blocks 41 evenly arranged along the circumference of the inner liner 1 to ensure the stability of the inner liner 1 abutting against the outer sleeve 2 in all directions.

[0054] Specifically, Figure 3 and Figure 5 As shown, the second connection mechanism 4 also includes a transmission assembly 43 corresponding to a plurality of blocks 41, a driving member 42 is arranged at the center of the end of the inner liner tube 1, and the block 41 is connected to the driving member 42 through the transmission assembly 43, and the driving member 42 can drive the block 41 to move away from the baffle 21 along the radial direction of the inner liner tube 1. In this embodiment, a plurality of transmission assemblies 43 are arranged corresponding to the blocks 41, and each block 41 is connected to the driving member 42 through a transmission assembly 43; the driving member 42 is arranged at the end of the inner liner tube 1 extending into the outer sleeve 2, and a plurality of transmission assemblies 43 are arranged around the driving member 42, and the staff can use the driving member 42 to drive each block 41 to retract along the radial direction of the inner liner tube 1 through the transmission assembly 43, so as to break away from the abutment with the baffle 21.

[0055] Specifically, Figure 3 and Figure 5As shown, the second connection mechanism 4 also includes a second elastic member 44, which is disposed between the block 41 and the driving member 42, and is configured to drive the block 41 to approach the baffle 21 along the radial direction of the inner liner tube 1. In this embodiment, the end of the inner liner tube 1 extending into the outer sleeve 2 is connected to the bottom end plate 11 through the surrounding tube 12, and the bottom end plate 11 is parallel to the end face of the inner liner tube 1, and an annular accommodating cavity is formed between the bottom end plate 11 and the end face of the inner liner tube 1, and the block 41 is slidably disposed in the accommodating cavity. Specifically, the driving member 42 is a cylinder or a hydraulic push rod, and the driving member 42 is arranged in the inner liner tube 1 along the axial direction of the inner liner tube 1. The output end of the driving member 42 can be extended and retracted along the axial direction of the inner liner tube 1. The transmission assembly 43 includes a first connecting rod 431 and a second connecting rod 432. The first connecting rod 431 is rotatably connected to the output end of the driving member 42, and the second connecting rod 432 is penetrated on the shroud 12 along the radial direction of the inner liner tube 1. One end of the second connecting rod 432 is rotatably connected to the first connecting rod 431, and the other end is fixedly connected to the block 41. The second elastic member 44 is arranged in the accommodating cavity along the radial direction of the inner liner tube 1, and its two ends are respectively abutted against the block 41 and the shroud 12. When connecting the inner liner tube 1 and the outer sleeve 2, the specific actions of the various parts of the second connecting mechanism 4 are as follows: the staff closes the driving member 42, and the output end of the driving member 42 is locked; in the process of the inner liner tube 1 extending into the outer sleeve 2, the block 41 radially abuts against the baffle 21 on the inner wall of the outer sleeve 2, and the block 41 is subjected to radial pressure and will move radially close to the driving member 42 at the center position, and the second connecting rod 432 moves synchronously in the radial direction under the push of the block 41, and the first connecting rod 431 rotates under the drive of the second connecting rod 432. During this process, the second elastic member 44 is in a compressed state; continue to insert the inner liner tube 1 into the outer sleeve 2, and when the block 41 reaches the lower part of the baffle 21, , under the elastic force of the second elastic member 44, the block 41 moves radially away from the driving member 42 and extends under the baffle 21 until the end of the block 41 abuts against the inner wall of the outer sleeve 2, and the block 41 abuts against the lower surface of the baffle 21 along the axial direction of the inner liner 1, at this time, the angle between the first connecting rod 431 and the second connecting rod 432 is an obtuse angle; when the second connecting mechanism 4 is removed, the staff remotely controls the output end of the driving member 42 to extend upward, at this time, the first connecting rod 431 will move upward under the drive of the driving member 42, and the first connecting rod 431 drives the second connecting rod 432 to move away from the baffle 21 along the radial direction of the inner liner 1, and finally drives the block 41 to break away from the abutment with the baffle 21.

[0056] Furthermore, if Figure 1 , Figure 3 as well as Figure 5As shown, a baffle plate 5 for isolating seawater is provided in the outer casing 2, and the baffle plate 5 is provided at the end of the outer casing 2 close to the lower jacket 200. In this embodiment, the baffle plate 5 is a circular cover plate matching the outer casing 2, and the edge of the baffle plate 5 is welded to the inner wall of the outer casing 2, so that a closed space is formed inside the pipeline below the baffle plate 5, which prevents seawater from entering the lower jacket 200 when the lower jacket 200 is installed in the sea, thereby reducing the corrosion of the lower jacket 200 by seawater and extending the service life of the jacket foundation. Specifically, the baffle plate 5 is provided at the end of the outer casing 2 close to the lower jacket 200, and the first connecting mechanism 3, the second connecting mechanism 4 and the baffle plate 21 are all located above the baffle plate 5.

[0057] Furthermore, if Figure 5 As shown, the slot is opened at the end of the outer casing 2 close to the upper jacket 100, and the clamping block 41 is arranged at the end of the inner liner 1 close to the lower jacket 200. In this embodiment, the first connecting mechanism 3 and the second connecting mechanism 4 respectively connect and fix the two ends of the jacket foundation connection node structure, further improving the connection strength between the inner liner 1 and the outer casing 2.

[0058] This embodiment also provides a jacket foundation construction method, using the jacket foundation connection node structure, including the following steps:

[0059] S1. Lift and lower the lower conductor frame 200 connected with the outer casing 2 to the designated position on the seabed and fix it; specifically, the staff will connect the outer casing 2 to the top of the lower conductor frame 200 and connect the inner liner 1 to the bottom of the upper conductor frame 100 in advance at the processing site, and then transport the lower conductor frame 200 connected with the outer casing 2 to the designated sea area, use a crane ship to lift and lower the lower conductor frame 200 into place, and sink the suction cylinder 300 at the bottom to a certain depth on the seabed.

[0060] S2. Lift the upper jacket 100 connected with the inner liner 1 onto the lower jacket 200, and insert the inner liner 1 into the outer jacket 2. Specifically, after the lower jacket 200 is installed in place, use a crane ship to lift the upper jacket 100 onto the lower jacket 200, and insert the inner liner 1 into the outer jacket 2; in the process of inserting the upper jacket 200, it is necessary to dock the upper cable pipe with the lower cable pipe simultaneously, that is, the assembly of the cable pipe is installed simultaneously with the main structure of the jacket foundation, without the need to set up an additional complex docking structure, with a simple structure and convenient operation.

[0061] S3, insert the latch 32 into the slot, and abut the block 41 against the baffle 21 along the axial direction of the inner liner 1. Specifically, after the inner liner 1 is inserted into place, insert the latch 32 in the first connecting mechanism 3 into the slot of the outer sleeve 2, and extend the block 41 in the second connecting mechanism 4 to abut against the lower surface of the baffle 21 along the axial direction of the inner liner 1.

[0062] By using the conductor frame foundation construction method, the inner liner 1 and the outer casing 2 can be detachably connected by inserting the pin 32 in the first connecting mechanism 3 into the slot of the outer casing 2, and the block 41 of the second connecting mechanism 4 is blocked on the lower surface of the baffle 21 of the outer casing 2, thereby improving the construction efficiency of the conductor frame foundation; and the inner liner 1 and the outer casing 2 can be completely separated without destroying the conductor frame foundation by cutting, which greatly reduces the difficulty of disassembling the conductor frame foundation and improves the reuse rate of the conductor frame foundation.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipe frame foundation connection node structure, characterized in that: include: An inner liner pipe (1), the inner liner pipe (1) being used to be connected to an upper conductor pipe frame (100); An outer sleeve (2), the outer sleeve (2) being used to be connected to a lower pipe frame (200), the inner diameter of the outer sleeve (2) being greater than the outer diameter of the inner liner (1), and the inner liner (1) being inserted into the outer sleeve (2); A first connecting mechanism (3), the first connecting mechanism (3) comprising a mounting seat (31) and a latch (32) movably arranged on the mounting seat (31), the mounting seat (31) being fixedly connected to the inner liner tube (1), the outer sleeve (2) being provided with a slot matching the latch (32), the latch (32) being inserted into the slot; A second connecting mechanism (4), the second connecting mechanism (4) comprising a connected clamping block (41) and a driving member (42), wherein the clamping block (41) and the mounting seat (31) are arranged on the inner lining tube (1) at intervals along the axial direction of the inner lining tube (1), a baffle (21) is arranged on the inner wall of the outer sleeve (2), the clamping block (41) abuts against the lower surface of the baffle (21) along the axial direction of the inner lining tube (1), and the baffle (21) abuts against the outer wall of the inner lining tube (1); The driving member (42) is capable of driving the clamping block (41) to move along the inner liner tube (1) to break away from contact with the baffle (21).

2. The jacket foundation connection node structure according to claim 1, characterized in that: A plurality of the first connection mechanisms (3) are provided, and the plurality of the first connection mechanisms (3) are evenly spaced along the circumference of the liner pipe (1); A plurality of the slots are provided in a one-to-one correspondence with the first connecting mechanisms (3).

3. The jacket foundation connection node structure according to claim 2, characterized in that: The first connecting mechanism (3) further comprises an electromagnet (33) and a permanent magnet (34), one of the electromagnet (33) and the permanent magnet (34) being connected to the latch (32), and the other of the electromagnet (33) and the permanent magnet (34) being fixedly arranged on the mounting seat (31); When the electromagnet (33) is energized, it can attract the permanent magnet (34) to drive the latch (32) closer, so that the latch (32) is disengaged from the slot.

4. The jacket foundation connection node structure according to claim 3, characterized in that: The first connecting mechanism (3) further comprises a first elastic member (35), wherein the first elastic member (35) is arranged on the mounting seat (31) and connected to the plug (32), and the first elastic member (35) is configured to drive the plug (32) to be inserted into the slot.

5. The jacket foundation connection node structure according to claim 1, characterized in that: A plurality of the clamping blocks (41) are provided, and the plurality of the clamping blocks (41) are evenly spaced along the circumference of the liner tube (1); The baffle (21) is arranged around the inner wall of the outer sleeve (2).

6. The jacket foundation connection node structure according to claim 5, characterized in that: The second connecting mechanism (4) also includes a transmission assembly (43) corresponding to the multiple clamping blocks (41) one by one, and the driving member (42) is arranged at the center of the end of the inner liner tube (1). The clamping block (41) is connected to the driving member (42) through the transmission assembly (43), and the driving member (42) can drive the clamping block (41) away from the baffle (21) along the radial direction of the inner liner tube (1).

7. The jacket foundation connection node structure according to claim 6, characterized in that: The second connecting mechanism (4) also includes a second elastic member (44), which is arranged between the clamping block (41) and the driving member (42), and the second elastic member (44) is configured to drive the clamping block (41) to approach the baffle (21) along the radial direction of the liner tube (1).

8. The jacket foundation connection node structure according to claim 1, characterized in that: The outer casing (2) is provided with a sealing plate (5) for sealing off seawater, and the sealing plate (5) is arranged at an end of the outer casing (2) close to the lower jacket (200).

9. The jacket foundation connection node structure according to claim 1, characterized in that: The slot is provided at an end of the outer sleeve (2) close to the upper pipe frame (100), and the clamping block (41) is provided at an end of the inner liner (1) close to the lower pipe frame (200).

10. A method for constructing a jacket foundation, characterized in that: Using the jacket foundation connection node structure according to any one of claims 1 to 9 comprises the following steps: S1, hoisting the lower jacket (200) connected to the outer casing (2) to a designated position on the seabed and fixing it; S2, hanging the upper pipe frame (100) connected with the inner liner pipe (1) onto the lower pipe frame (200), and inserting the inner liner pipe (1) into the outer casing (2); S3, inserting the latch pin (32) into the slot, and causing the clamping block (41) to abut against the baffle (21) along the axial direction of the inner liner tube (1).

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