A high strength column leg pile shoe for an offshore booster station

Abstract

This invention discloses a high-strength column leg pile shoe for an offshore substation, comprising a pile shoe and a column leg. A steel pipe pile is connected to the bottom surface of the pile shoe, and a sleeve is fixedly connected to the center of the upper surface of the pile shoe. An insertion cavity is formed inside the sleeve, and a connecting groove is formed at the top of the insertion cavity to communicate with the outside. The column leg is inserted into the insertion cavity through the connecting groove. A limit ring is fixedly installed on the outer surface of the column leg, and the limit ring abuts against the upper surface of the sleeve. This high-strength column leg pile shoe for an offshore substation can be directly welded to the steel pipe pile as needed, or it can be assembled to the steel pipe pile by screwing in a rod, improving the versatility of the device. When the rod is screwed into the steel pipe pile, a fixing component can limit and fix the rod to prevent it from rotating under external force, thus affecting the connection between the pile shoe and the steel pipe pile. After the pile shoe and the steel pipe pile are connected, the column leg is inserted into the sleeve of the pile shoe. The snap-fit ​​component in the insertion cavity will snap and fix the column leg, facilitating the installation of the column leg.

Description

Technical Field

[0001] This invention relates to the field of offshore substation construction technology, specifically a high-strength column leg pile shoe for an offshore substation. Background Technology

[0002] Offshore substations are power conversion, regulation, and transmission facilities built to step up the voltage of electricity generated by offshore wind turbines and transmit it to the coast or further afield. They typically consist of an offshore substation and submarine cables connecting the offshore wind turbines and the substation. With the development of clean energy globally, the market size of offshore wind power is gradually expanding. The construction of an offshore substation requires the initial construction of a robust platform, generally consisting of a platform structure, pile legs, and pile shoes.

[0003] The existing high-strength column legs and pile shoes for offshore booster stations are inconvenient to fix the column legs in the pile shoes underwater, requiring more labor and posing higher risks. In addition, most column legs and pile shoes are rigidly connected and lack shock absorption and cushioning devices, making them susceptible to the effects of wind and waves at sea, which reduces the service life of the column legs and pile shoes. Summary of the Invention

[0004] The purpose of this invention is to provide a high-strength column leg shoe for offshore substations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-strength column leg shoe for an offshore substation includes a shoe and a column leg. A steel pipe pile is connected to the bottom surface of the shoe, and a sleeve is fixedly connected to the center of the upper surface of the shoe. An insertion cavity is opened inside the sleeve, and a connecting groove is opened at the top of the insertion cavity to communicate with the outside. The column leg is inserted into the insertion cavity through the connecting groove. A limit ring is fixedly installed on the outer surface of the column leg, and the limit ring abuts against the upper surface of the sleeve. Multiple snap-fit ​​components for fixing the column leg are arranged inside the insertion cavity, and multiple limit buffer components are symmetrically arranged inside the sleeve.

[0007] Preferably, the snap-fit ​​assembly includes a snap rod rotatably mounted inside the insertion cavity, a spring connected to the bottom surface of the snap rod, the bottom end of the spring connected to the inner wall of the insertion cavity, multiple snap grooves opened on the surface of the column leg, all of which match the snap rod, and limit blocks fixedly installed on the inner wall of the insertion cavity, all of which abut against the upper surface of the snap rod.

[0008] Preferably, the limiting buffer assembly includes a buffer cavity formed inside the sleeve, a damping elastic block is installed inside the buffer cavity, one end of the damping elastic block is connected to a stop plate, one side of the stop plate abuts against a ball, and one end of the ball extends into the interior of the connecting groove and abuts against the column leg.

[0009] Preferably, a limiting groove is provided on the inner wall of the buffer cavity, and limiting sliders are fixedly connected to both the upper and lower ends of the abutment, with the limiting sliders slidably connected to the limiting groove.

[0010] Preferably, a support spring is installed on the bottom wall of the insertion cavity, a connecting plate is fixedly connected to the top of the support spring, the upper surface of the connecting plate abuts against the column leg, and a friction ring is fixedly connected to the outer side of the connecting plate, the friction ring being in contact with the inner wall of the insertion cavity.

[0011] Preferably, the pile shoe is connected to the steel pipe pile by welding.

[0012] Preferably, the steel pipe pile has an insertion hole inside, and an insertion rod is fixedly connected to the bottom surface of the pile shoe. The insertion rod and the surface of the insertion hole are both provided with matching threads, and the steel pipe pile has a fixing component inside for fixing the insertion rod.

[0013] Preferably, the fixing component includes a fixing groove formed on the inner wall of the socket, a telescopic rod fixedly connected inside the fixing groove, a fixing block fixedly connected to one end of the telescopic rod, a fixing slot formed on the surface of the plug rod, the fixing block matching the fixing slot, and a fixing spring sleeved on the outer surface of the telescopic rod.

[0014] Compared with the prior art, the present invention provides a high-strength column leg pile shoe for an offshore substation, which has the following beneficial effects:

[0015] 1. The high-strength column leg pile shoe of this offshore substation can be directly welded to the steel pipe pile as needed, or it can be assembled to the steel pipe pile by inserting a rod and screwing it on, thus improving the versatility of the device.

[0016] 2. The high-strength column leg pile shoe of this offshore substation can limit and fix the inserted rod when it is screwed onto the steel pipe pile through the fixing component, so as to prevent the inserted rod from rotating under external force and affecting the connection effect between the pile shoe and the steel pipe pile.

[0017] 3. The high-strength column leg pile shoe of this offshore substation connects the pile shoe and the steel pipe pile. Then, the column leg is inserted into the sleeve of the pile shoe. The snap-fit ​​component in the insertion cavity will snap and fix the column leg, which facilitates the installation of the column leg.

[0018] 4. The high-strength column legs of this offshore substation, through the limiting and buffering components inside the connecting groove, can easily absorb the lateral vibration of the column legs, and the support spring can easily buffer the longitudinal vibration of the column legs, reducing the impact of wind and waves on the column legs at sea and extending the service life of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the sleeve of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of the structure of A in the middle;

[0022] Figure 4 for Figure 2 Enlarged view of the structure of B in the middle;

[0023] Figure 5 This is a schematic diagram of the steel pipe pile structure of the present invention;

[0024] Figure 6 for Figure 5 Enlarged view of the structure of C.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Pile shoe; 2. Steel pipe pile; 21. Insertion hole; 3. Sleeve; 4. Column leg; 5. Limiting ring; 6. Insertion cavity; 7. Snap-fit ​​assembly; 71. Clip rod; 72. Spring; 73. Clip groove; 74. Limiting block; 8. Limiting buffer assembly; 81. Buffer cavity; 82. Damping elastic block; 83. Abutment plate; 84. Ball bearing; 9. Fixing assembly; 91. Fixing groove; 92. Telescopic rod; 93. Fixing spring; 94. Fixing block; 95. Fixing clip groove; 10. Support spring; 11. Connecting plate; 12. Friction ring; 13. Connecting groove; 14. Insert rod. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Please see Figure 1-4This invention provides a high-strength column leg shoe for an offshore substation. The column leg shoe 1 can be directly welded to the steel pipe pile 2 as needed, or it can be screwed onto the steel pipe pile 2 via a plug rod 14, improving the versatility of the device. When the plug rod 14 is screwed onto the steel pipe pile 2, the fixing component 9 can limit and fix the plug rod 14 to prevent it from rotating under external force, thus affecting the connection effect between the column leg shoe 1 and the steel pipe pile 2. After the column leg shoe 1 and the steel pipe pile 2 are connected, the column leg 4 is inserted into the sleeve 3 of the column leg shoe 1. The snap-fit ​​component 7 in the insertion cavity 6 will snap and fix the column leg 4, facilitating the installation of the column leg 4. The limiting buffer component 8 inside the connecting groove 13 can absorb the lateral vibration of the column leg 4, and the support spring 10 can buffer the longitudinal vibration of the column leg 4, reducing the impact of wind and waves on the column leg 4 at sea and extending the service life of the device.

[0029] The high-strength column leg shoe of this offshore substation includes a column shoe 1 and a column leg 4. A steel pipe pile 2 is connected to the bottom surface of the column shoe 1 and is inserted deep into the seabed. A sleeve 3 is fixedly connected to the center of the upper surface of the column shoe 1. An insertion cavity 6 is opened inside the sleeve 3, and a connecting groove 13 is opened at the top of the insertion cavity 6 to communicate with the outside. The column leg 4 is inserted into the insertion cavity 6 through the connecting groove 13. A limit ring 5 is fixedly installed on the outer surface of the column leg 4. The limit ring 5 abuts against the upper surface of the sleeve 3 to prevent the column leg 4 from being inserted too deeply and affecting the stability of the connection. Multiple snap-fit ​​components 7 for fixing the column leg 4 are set inside the insertion cavity 6. Multiple limit buffer components 8 are symmetrically arranged inside the sleeve 3 to facilitate shock absorption and buffering of the column leg 4, reduce the impact of wind and waves on the column leg 4 at sea, and extend the service life of the device.

[0030] The snap-fit ​​assembly 7 includes a snap-fit ​​rod 71 rotatably installed inside the insertion cavity 6. A spring 72 is connected to the bottom surface of the snap-fit ​​rod 71. The bottom end of the spring 72 is connected to the inner wall of the insertion cavity 6. The surface of the column leg 4 is provided with multiple snap-fit ​​grooves 73, all of which match the snap-fit ​​rod 71. Limiting blocks 74 are fixedly installed on the inner wall of the insertion cavity 6. The limiting blocks 74 all abut against the upper surface of the snap-fit ​​rod 71.

[0031] When the column leg 4 is inserted into the insertion cavity 6, it will first contact the locking rod 71 and push the locking rod 71 downward to rotate. The locking rod 71 compresses the spring 72. When the column leg 4 moves downward to the position of the locking groove 73 corresponding to the locking rod 71, the locking rod 71 rotates under the influence of the spring 72 and is locked in the locking groove 73, cooperating with the limiting ring 5 on the column leg 4, so that the column leg 4 can be fixed on the pile shoe 1.

[0032] The limiting buffer assembly 8 includes a buffer cavity 81 opened inside the sleeve 3. A damping elastic block 82 is installed inside the buffer cavity 81. One end of the damping elastic block 82 is connected to a stop plate 83. One side of the stop plate 83 abuts against a ball 84. One end of the ball 84 extends into the interior of the connecting groove 13 and abuts against the column leg 4.

[0033] When the column leg 4 vibrates laterally, it will squeeze the surrounding ball bearings 84. The ball bearings 84 squeeze the damping elastic block 82 through the abutment plate 83 to absorb the vibration and facilitate shock absorption and buffering of the column leg 4.

[0034] Furthermore, a limiting groove is provided on the inner wall of the buffer cavity 81, and limiting sliders are fixedly connected to both the upper and lower ends of the abutment plate 83. The limiting sliders are slidably connected to the limiting grooves, which facilitates limiting the movement of the abutment plate 83 and ensures the normal operation of the device.

[0035] The bottom wall of the insertion cavity 6 is equipped with a support spring 10, and the top of the support spring 10 is fixedly connected to a connecting plate 11. The upper surface of the connecting plate 11 abuts against the column leg 4, and a friction ring 12 is fixedly connected to the outer side of the connecting plate 11. The friction ring 12 contacts the inner wall of the insertion cavity 6. The support spring 10 facilitates the buffering of the longitudinal vibration of the column leg 4. At the same time, when the column leg 4 vibrates up and down, it will drive the connecting plate 11 to move up and down. The connecting plate 11 will drive the friction ring 12 to move up and down, generating friction with the inside of the insertion cavity 6, converting the energy of the vibration into heat energy, and absorbing the vibration.

[0036] In one embodiment, the pile shoe 1 is connected to the steel pipe pile 2 by welding, and the pile shoe 1 can be directly installed on the seabed along with the steel pipe pile 2.

[0037] In another embodiment, the steel pipe pile 2 has an insertion hole 21 inside, and the bottom surface of the pile shoe 1 is fixedly connected to the insertion rod 14. The insertion rod 14 and the surface of the insertion hole 21 are both provided with matching threads. The steel pipe pile 2 has a fixing component 9 for fixing the insertion rod 14 inside. The insertion rod 14 is screwed onto the steel pipe pile 2, which can connect the pile shoe 1 and the steel pipe pile 2. When the insertion rod 14 is screwed onto the steel pipe pile 2, the fixing component 9 can limit and fix the insertion rod 14 to prevent the insertion rod 14 from being rotated by external force.

[0038] The fixing component 9 includes a fixing groove 91 formed on the inner wall of the insertion hole 21. A telescopic rod 92 is fixedly connected inside the fixing groove 91. A fixing block 94 is fixedly connected to one end of the telescopic rod 92. A fixing slot 95 is formed on the surface of the insertion rod 14. The fixing block 94 matches the fixing slot 95. A fixing spring 93 is sleeved on the outer surface of the telescopic rod 92. When the insertion rod 14 rotates to the position where the fixing slot 95 corresponds to the fixing block 94, the fixing spring 93 will drive the fixing block 94 to move through its own elastic force and engage in the fixing slot 95, so as to further limit and fix the insertion rod 14 and prevent the insertion rod 14 from being rotated by external force.

[0039] The working principle of this invention is as follows:

[0040] The high-strength column leg pile shoe of this offshore substation can be directly welded to the steel pipe pile 2 as needed, or it can be screwed onto the steel pipe pile 2 via the insertion rod 14, improving the versatility of the device. When the insertion rod 14 is screwed onto the steel pipe pile 2, when the insertion rod 14 rotates to the position where the fixing slot 95 corresponds to the fixing block 94, the fixing spring 93 will drive the fixing block 94 to move through its own elastic force, locking it in the fixing slot 95. This facilitates further limiting and fixing of the insertion rod 14, preventing the insertion rod 14 from rotating under external force and affecting the connection effect between the pile shoe 1 and the steel pipe pile 2. After the pile shoe 1 and the steel pipe pile 2 are connected, the column leg 4 is inserted into the sleeve 3 of the pile shoe 1. When the column leg 4 is inserted into the insertion cavity 6, it will first contact the locking rod 71, pushing the locking rod 71 downward to rotate. The clamping rod 71 compresses the spring 72. When the column leg 4 moves downward to the position corresponding to the clamping rod 71 in the slot 73, the clamping rod 71 rotates under the influence of the spring 72 and engages in the slot 73, cooperating with the limiting ring 5 on the column leg 4 to facilitate the column leg 4 to be fixed on the pile shoe 1. When the column leg 4 vibrates laterally, it will squeeze the surrounding balls 84. The balls 84 squeeze the damping elastic block 82 through the abutment plate 83 to absorb the vibration and facilitate the shock absorption of the column leg 4. The support spring 10 facilitates the buffering of the longitudinal vibration of the column leg 4. At the same time, when the column leg 4 vibrates up and down, it will drive the connecting plate 11 to move up and down. The connecting plate 11 will drive the friction ring 12 to move up and down, generating friction with the inside of the insertion cavity 6, converting the vibration energy into heat energy and absorbing the vibration.

[0041] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A high-strength column leg pile shoe for an offshore substation, characterized in that, The system includes a pile shoe (1) and a column leg (4). The bottom surface of the pile shoe (1) is connected to a steel pipe pile (2). A sleeve (3) is fixedly connected to the center of the upper surface of the pile shoe (1). An insertion cavity (6) is opened inside the sleeve (3). A connecting groove (13) is opened at the top of the insertion cavity (6) to communicate with the outside. The column leg (4) is inserted into the insertion cavity (6) through the connecting groove (13). A limiting ring (5) is fixedly installed on the outer surface of the column leg (4). The limiting ring (5) abuts against the upper surface of the sleeve (3). Multiple snap-fit ​​components (7) for fixing the column leg (4) are provided inside the insertion cavity (6). Multiple limiting buffer components (8) are symmetrically arranged inside the sleeve (3). The limiting buffer assembly (8) includes a buffer cavity (81) opened inside the sleeve (3). A damping elastic block (82) is installed inside the buffer cavity (81). One end of the damping elastic block (82) is connected to a stop plate (83). A ball (84) abuts against one side of the stop plate (83). One end of the ball (84) extends into the interior of the connecting groove (13) and abuts against the column leg (4).

2. The high-strength column leg pile shoe for an offshore substation according to claim 1, characterized in that, The snap-fit ​​assembly (7) includes a snap rod (71) rotatably installed inside the insertion cavity (6). A spring (72) is connected to the bottom surface of the snap rod (71). The bottom end of the spring (72) is connected to the inner wall of the insertion cavity (6). The surface of the column leg (4) is provided with multiple snap grooves (73), all of which match the snap rod (71). Limiting blocks (74) are fixedly installed on the inner wall of the insertion cavity (6). The limiting blocks (74) all abut against the upper surface of the snap rod (71).

3. The high-strength column leg pile shoe for an offshore substation according to claim 1, characterized in that, The inner wall of the buffer cavity (81) is provided with a limiting groove, and the upper and lower ends of the abutment plate (83) are fixedly connected with limiting sliders, and the limiting sliders are slidably connected to the limiting groove.

4. The high-strength column leg pile shoe for an offshore substation according to claim 1, characterized in that, A support spring (10) is installed on the bottom wall of the insertion cavity (6), and a connecting plate (11) is fixedly connected to the top of the support spring (10). The upper surface of the connecting plate (11) abuts against the column leg (4).

5. A high-strength column leg pile shoe for an offshore substation according to claim 4, characterized in that, A friction ring (12) is fixedly connected to the outside of the connecting plate (11), and the friction ring (12) is in contact with the inner wall of the insertion cavity (6).

6. A high-strength column leg pile shoe for an offshore substation according to claim 1, characterized in that, The pile shoe (1) is connected to the steel pipe pile (2) by welding.

7. A high-strength column leg pile shoe for an offshore substation according to claim 1, characterized in that, The steel pipe pile (2) has an insertion hole (21) inside. The bottom surface of the pile shoe (1) is fixedly connected to the insertion rod (14). The insertion rod (14) and the insertion hole (21) are both provided with matching threads. The steel pipe pile (2) has a fixing component (9) for fixing the insertion rod (14) inside.

8. A high-strength column leg pile shoe for an offshore substation according to claim 7, characterized in that, The fixing component (9) includes a fixing groove (91) opened on the inner wall of the insertion hole (21), a telescopic rod (92) is fixedly connected inside the fixing groove (91), a fixing block (94) is fixedly connected to one end of the telescopic rod (92), a fixing slot (95) is opened on the surface of the insertion rod (14), the fixing block (94) matches the fixing slot (95), and a fixing spring (93) is sleeved on the outer surface of the telescopic rod (92).

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