A cable protection pipe for offshore wind power projects
By combining the pipe section module and prefabricated piles, combined with the bending buffer ring and bending limiter, the problem that the cable protection pipe counterweight cannot adapt to the subsea environment is solved, the stability and adaptability of cable laying are improved, and the cost is reduced.
Patent Information
- Application Number
- CN202411429033.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-10-14
AI Technical Summary
The counterweights on the cable protection pipe cannot adapt to the subsea environment, resulting in the buried counterweights being unable to remain in the unified line path, affecting the protection of cables and the stability of the seabed laying.
Using a pipe section module composed of a combination of No. 1, No. 2 and No. 3 half pipe, combined with prefabricated piles, bending buffer rings, sealing gaskets and bending limiters, the pipe section module is used to assemble grooves, bolt assembly and floating limiting steel cables. and other structures to improve the stability and adaptability of cable protection pipes.
It effectively improves the stability and adaptability of cable protection pipes, reduces laying costs, and enhances the adaptability to complex seabed environments, avoiding the impact of shaking caused by seawater flow.
Smart Images
Figure CN118944000B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a cable protection tube, in particular to a cable protection tube used in offshore wind power projects and applied in the technical field of marine cable laying. Background Art
[0002] In the application of offshore wind energy, the electricity obtained needs to be transmitted using submarine cables. When the submarine cable is laid, the part that contacts the seabed is called the bottoming section. The laying of the bottoming section of the submarine cable on the seabed requires the addition of counterweights to improve the stability of the laying of the submarine cable.
[0003] The specification of Chinese invention patent CN202410004126.X discloses "A submarine cable protection device", which is provided with a first counterweight block, a second counterweight block and a connecting piece. The first counterweight block, the second counterweight block and the connecting piece are connected to form a chain structure and are installed on the bottoming section of the cable, thereby increasing the area of the counterweight of the cable bottoming section and avoiding the concentration of the counterweight of the cable bottoming section in one place. When the cable is impacted by ocean currents, the cable increases its stability through the chain-like counterweight and can limit the bending of the cable, avoiding the cable from being subjected to a large bending load, which is beneficial to the protection of the cable.
[0004] Due to the complex seabed environment, the ballast weights directly installed on the cable protection tube cannot adapt well to the seabed environment. If the ballast weights are buried directly on the seabed, the buried ballast weights cannot be well maintained on a uniform straight path, affecting the protection of the cable by the protection tube and the bottoming laying of the cable. Summary of the invention
[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the counterweights on the cable protection tube cannot adapt well to the seabed environment, and the buried counterweights cannot be well maintained on a uniform straight path, which affects the protection of the cable by the protection tube and the bottom laying of the cable.
[0006] In order to solve the above problems, the present invention provides a cable protection pipe for offshore wind power engineering, comprising a plurality of pipe segment modules connected in sequence front and back, and a prefabricated pile buried at the bottom of a specific pipe segment module, the pipe segment module is composed of any two combinations of a No. 1 and a half pipe, a No. 2 and a half pipe, and a No. 3 and a half pipe, the outside of the No. 1 and a half pipe is fixedly connected with a bottoming assembly page, the top of the prefabricated pile is fixedly connected with an assembly groove, the inside of the assembly groove is slidably connected with a bolt assembly, the bottoming assembly page extends into the assembly groove, and the bottoming assembly page is sleeved with the bolt assembly;
[0007] A bending buffer ring is provided between the pipe modules of two adjacent sections, and a buffer groove is provided on the outer surface of the bending buffer ring. A ferrule is rotatably connected to the inside of the buffer groove, and a limiting crescent is fixedly connected to the outside of one end of the ferrule. Tooth pieces are movably connected to both sides of the surface of the limiting crescent, and a screw is threadedly connected to the middle part of the limiting crescent. A wedge block is rotatably connected to the inner end of the screw, and the two ends of the wedge block correspond to two tooth pieces respectively.
[0008] In the above-mentioned cable protection pipe used for offshore wind power projects, the protection pipe is formed by connecting the combined pipe segment modules front and back, and the assembled protection pipe is fixed to the prefabricated piles, which effectively improves the stability of the bottom-laying of the cable protection pipe.
[0009] As a further improvement of the present application, a reinforced steel frame is embedded inside the assembly trough, and the precast piles are made of reinforced concrete material. The reinforced steel frame is used to effectively improve the structural strength of the assembly trough, and the precast piles made of reinforced concrete material are easy to cast, thereby effectively reducing the cost of cable laying.
[0010] As a further improvement of the present application, sealing gaskets are fixedly connected between the two ends of two adjacent bending buffer rings, and the open ends of the No. 1 and a half pipe, No. 2 and a half pipe, and No. 3 and a half pipe are in contact with the sealing gaskets. The sealing gaskets are used to effectively improve the assembly sealing effect between the No. 1 and a half pipe, No. 2 and a half pipe, and No. 3 and a half pipe, and effectively improve the combination stability of the bending buffer ring and the pipe section module.
[0011] As a further improvement of the present application, the surface of the sealing gasket is provided with equidistant protrusions, and the opening ends of the first half pipe, the second half pipe and the third half pipe are provided with corresponding grooves corresponding to the protrusions, and the bending buffer ring and the sealing gasket are made of corrosion-resistant rubber material. The engagement connection between the groove and the protrusion further effectively improves the assembly sealing effect between the first half pipe, the second half pipe and the third half pipe.
[0012] As another improvement of the present application, a bending limiter is selectively installed between two adjacent pipe segment modules. The bending limiter is composed of a plurality of limiting units. The bending limiter is utilized to protect the section where the cable bends and floats, thereby effectively improving the protection capability of the cable.
[0013] As another improvement supplement to the present application, the outside of the No. 2 half pipe is fixedly connected with an anchor cable page, the outside of the limiting unit is fixedly connected with a limiting cable ring, and the limiting bend steel cables are fixedly connected between two adjacent anchor cable pages. The limiting bend steel cables pass through the limiting cable rings in sequence, and the limiting cable rings on the limiting unit are connected in series through the limiting bend steel cables, thereby limiting the straightening of the bend limiter, effectively avoiding pulling on the protective tube laid on the bottom during the straightening movement of the bend limiter, thereby effectively improving the stability of the protective tube laid on the bottom.
[0014] As another improvement supplement of the present application, a prefabricated pile is also buried directly below the top of the bend limiter, and a limited floating steel cable is fixedly connected between the anchor cable page and the prefabricated pile. The limited floating steel cable is used to limit the maximum floating height of the top of the bend limiter, thereby further limiting and protecting the bending section of the cable, thereby preventing the sinking and floating movement of the cable from affecting the stability of the protection tube touching the bottom when laid.
[0015] As another improvement of the present application, the connecting end of the floating steel cable and the precast pile is fixedly connected with a cable sleeve, and the cable sleeve is socketed with the bolt assembly. The bottom end of the floating steel cable is fixed by socketing the cable sleeve with the bolt assembly, which effectively improves the utilization rate of the precast piles, reduces the casting of different types of precast piles, and reduces the cost of laying cables.
[0016] In summary, the present invention combines No. 1 and a half pipes, No. 2 and a half pipes, and No. 3 and a half pipes in pairs to obtain suitable pipe segment modules, and then splices the pipe segment modules front to back in sequence to obtain a protective pipe for bottom-touching installation of cables on the seabed, thereby effectively improving the diversity of the protective pipes and adapting to different bottom-touching laying requirements. The bending ability of the protective pipe is achieved through the deformation ability of the bending buffer ring, thereby enabling the protective pipe to adapt to prefabricated piles at different burial locations, effectively improving the burial range of the prefabricated piles, and effectively improving the ability of the protective pipe to withstand complex seabed environments. The limiting crescent is then used to restore and limit the deformed bending buffer ring, thereby enabling the bending buffer ring to maintain a deformed state, effectively improving the stability of the bending state of the protective pipe, and effectively avoiding the influence of the protective pipe shaking back and forth due to the flow of seawater. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;
[0018] Figure 2 This is a three-dimensional structural diagram of the first embodiment of the present application, a No. 1 half pipe and a prefabricated pile;
[0019] Figure 3 This is a demonstration diagram of the bending and laying of the protection pipe in the first embodiment of the present application;
[0020] Figure 4 This is a three-dimensional structural diagram of a No. 1 half pipe of the first embodiment of the present application;
[0021] Figure 5 This is a three-dimensional structural diagram of the second half pipe of the first embodiment of the present application;
[0022] Figure 6 This is a three-dimensional structural diagram of the third half pipe of the first embodiment of the present application;
[0023] Figure 7 This is a three-dimensional exploded view of the pipe segment module of the first embodiment of the present application;
[0024] Figure 8 This is a three-dimensional structural diagram of a bending buffer ring and a sealing gasket in the first embodiment of the present application;
[0025] Fig. 9 This is an enlarged cross-sectional view of the bending buffer ring in the first embodiment of the present application;
[0026] Fig.10 This is a demonstration diagram of the first implementation method of the present application, in which the tooth piece is stretched outward;
[0027] Fig.11 This is a three-dimensional structural diagram of a bending limiter according to a second embodiment of the present application;
[0028] Fig.12 This is a three-dimensional structural diagram of the floating steel cable according to the second embodiment of the present application.
[0029] Description of the numbers in the figure:
[0030] 1. Pipe segment module; 101. No. 1 half pipe; 102. No. 2 half pipe; 103. No. 3 half pipe; 104. Bottom-touching assembly page; 105. Anchor cable page; 2. Precast piles; 201. Assembly groove; 202. Bolt assembly; 203. Reinforced steel frame; 3. Bending buffer ring; 301. Buffer groove; 302. Ferrule; 303. Limiting crescent; 304. Tooth piece; 305. Screw; 306. Wedge; 307. Sealing gasket; 308. Bump; 309. Groove; 4. Bending limiter; 401. Limiting unit; 402. Limiting grommet; 403. Bending limiting steel cable; 404. Floating limiting steel cable; 405. Rope sleeve. DETAILED DESCRIPTION
[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.
[0032] The first implementation method:
[0033] Figure 1-6 The invention shows a cable protection pipe for offshore wind power engineering, comprising a plurality of pipe segment modules 1 connected in sequence front to back, and a prefabricated pile 2 buried at the bottom of a specific pipe segment module 1, wherein the pipe segment module 1 is composed of any two combinations of a No. 1 half pipe 101, a No. 2 half pipe 102 and a No. 3 half pipe 103, the No. 1 half pipe 101 is fixedly connected to the outside with a bottoming assembly page 104, the top of the prefabricated pile 2 is fixedly connected to an assembly groove 201, the inside of the assembly groove 201 is slidably connected with a bolt assembly 202, the bottoming assembly page 104 extends into the assembly groove 201, and the bottoming assembly page 104 is sleeved with the bolt assembly 202, a reinforcement steel frame 203 is embedded in the assembly groove 201, the prefabricated pile 2 is composed of reinforced concrete material, the reinforcement steel frame 203 is used to effectively improve the structural strength of the assembly groove 201, and the prefabricated pile 2 composed of reinforced concrete material is easy to cast, thereby effectively reducing the cable laying cost;
[0034] When laying the cable on the seabed, according to the laying situation of the cable and the pre-buried position of the precast pile 2, a suitable pipe segment module 1 is assembled by combining the No. 1 and a half pipe 101, the No. 2 and a half pipe 102 and the No. 3 and a half pipe 103, and then the pipe segment modules 1 are connected in sequence to obtain a cable protection tube, and the bottoming assembly page 104 on the No. 1 and a half pipe 101 is extended into the assembly groove 201 on the top of the precast pile 2, and then the bottoming assembly page 104 is socketed and locked by the bolt assembly 202, so that the pipe segment module 1 is fixedly installed on the top of the precast pile 2, thereby effectively improving the efficiency of the cable bottom laying and adapting to different bottom laying requirements.
[0035] Figure 7-10 As shown, a bending buffer ring 3 is sleeved between two adjacent pipe segment modules 1, a buffer groove 301 is opened on the outer surface of the bending buffer ring 3, a ferrule 302 is rotatably connected inside the buffer groove 301, a limiting crescent 303 is fixedly connected to one end of the ferrule 302, tooth pieces 304 are movably connected to both sides of the surface of the limiting crescent 303, a screw 305 is threadedly connected to the middle part of the limiting crescent 303, a wedge 306 is rotatably connected to the inner end of the screw 305, and two ends of the wedge 306 correspond to two tooth pieces 304 respectively;
[0036] When the pipe segment module 1 is connected and assembled, the bending ability of the protective tube is achieved through the deformation ability of the bending buffer ring 3, so that the protective tube can adapt to the precast piles 2 in different burial locations, effectively improve the burial range of the precast piles 2, and effectively improve the ability of the protective tube to withstand complex seabed environments. The limiting crescent 303 is rotated to a point where the buffer groove 301 expands and deforms outwards, and the screw 305 is tightened to insert the wedge block 306 between the two teeth 304. The two outward-expanding teeth 304 are used to resist the buffer groove 301 to achieve the restoration restriction of the deformed bending buffer ring 3, so that the bending buffer ring 3 remains in a deformed state, effectively improving the stability of the bending state of the protective tube, thereby effectively avoiding the influence of the protective tube shaking back and forth due to the flow of seawater.
[0037] Figure 7-8It is shown that sealing gaskets 307 are fixedly connected between the two ends of two adjacent bending buffer rings 3, and the opening ends of the No. 1 half pipe 101, the No. 2 half pipe 102 and the No. 3 half pipe 103 are in contact with the sealing gaskets 307. The sealing gaskets 307 are used to effectively improve the assembly sealing effect between the No. 1 half pipe 101, the No. 2 half pipe 102 and the No. 3 half pipe 103, and effectively improve the combination stability of the bending buffer ring 3 and the pipe segment module 1. The surface of the sealing gasket 307 is provided with equidistant protrusions 308, and the opening ends of the No. 1 half pipe 101, the No. 2 half pipe 102 and the No. 3 half pipe 103 are provided with corresponding grooves 309 corresponding to the protrusions 308. The bending buffer ring 3 and the sealing gasket 307 are both made of corrosion-resistant rubber materials. The assembly sealing effect between the No. 1 half pipe 101, the No. 2 half pipe 102 and the No. 3 half pipe 103 is further effectively improved by the snap-fit connection between the grooves 309 and the protrusions 308;
[0038] When assembling the protective tube, the groove 309 is snap-fitted with the protrusion 308, so that the sealing gasket 307 effectively improves the assembly sealing effect between the No. 1 half tube 101, the No. 2 half tube 102 and the No. 3 half tube 103, thereby effectively improving the combination stability between the bending buffer ring 3 and the pipe segment module 1, and further effectively improving the assembly stability of the cable protection tube.
[0039] The second implementation method:
[0040] Compared with the first embodiment, this embodiment mainly adds a bending limiter 4. The specific newly added structure is as follows, and the remaining structures are consistent with the first embodiment.
[0041] Figure 1 and Figure 11-12 As shown, a bending limiter 4 is selectively installed between two adjacent pipe segment modules 1. The bending limiter 4 is composed of a plurality of limiting units 401. The bending limiter 4 is used to protect the section where the cable is bent and floated, thereby effectively improving the protection capability of the cable. The outside of the second half pipe 102 is fixedly connected with an anchor cable page 105, and the outside of the limiting unit 401 is fixedly connected with a limiting grommet 402. A limited bending steel cable 403 is fixedly connected between two adjacent anchor cable pages 105. The limited bending steel cable 403 passes through the limiting grommet 402 in sequence, and the limiting grommet 402 on the limiting unit 401 is connected in series through the limited bending steel cable 403, thereby limiting the straightening of the bending limiter 4, effectively preventing the bending limiter 4 from pulling the bottom-laid protective pipe when straightening, thereby effectively improving the stability of the bottom-laid protective pipe;
[0042] When the cable is being laid to the bottom, the bending and floating section of the cable is protected by the bending limiter 4. After determining the floating bending degree of the bending limiter 4, the bending limiter cable 403 passes through the limiting cable ring 402 on the limiting unit 401 in sequence, and then the two points of the bending limiter cable 403 are fixed on the anchor cable page 105 of the second half pipe 102, thereby limiting the straightening of the bending limiter 4, effectively avoiding the bending limiter 4 from pulling the protective tube laid to the bottom during the straightening movement, thereby effectively improving the stability of the protective tube laid to the bottom.
[0043] Figure 11-12 As shown, a prefabricated pile 2 is also buried just below the top of the bend limiter 4, and a limited floating steel cable 404 is fixedly connected between the anchor cable page 105 and the prefabricated pile 2. The limited floating steel cable 404 is used to limit the maximum floating height of the top of the bend limiter 4, and further limit the protection of the cable bending section, so as to avoid the floating movement of the cable affecting the stability of the bottoming laying of the protection pipe, and the connection end of the limited floating steel cable 404 and the prefabricated pile 2 is fixedly connected with a cable sleeve 405, and the cable sleeve 405 is sleeved with the bolt assembly 202. The bottom end of the limited floating steel cable 404 is fixed by the sleeve connection of the cable sleeve 405 and the bolt assembly 202, which effectively improves the utilization rate of the prefabricated pile 2, reduces the casting of different types of prefabricated piles 2, and reduces the laying cost of the cable.
[0044] Precast piles 2 are also pre-buried in the area below the top of the bend limiter 4, and a floating steel cable 404 is installed between the anchor cable leaf 105 on the No. 2 half pipe 102 and the precast pile 2. The floating steel cable 404 limits the maximum floating height of the top of the bend limiter 4, further restricting and protecting the bending section of the cable, thereby preventing the sinking and floating movement of the cable from affecting the stability of the bottoming of the protection pipe. The rope sleeve 405 on the floating steel cable 404 is connected with the bolt assembly 202, so that the structure of the precast pile 2 can be reused without casting other types of precast piles 2, effectively reducing the laying cost of the cable.
[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.
Claims
1. A cable protection tube for offshore wind power projects, characterized in that: The invention comprises a plurality of pipe segment modules (1) connected in sequence front to back, and a prefabricated pile (2) buried at the bottom of a specific pipe segment module (1), wherein the pipe segment module (1) is composed of any two combinations of a No. 1 half pipe (101), a No. 2 half pipe (102) and a No. 3 half pipe (103), the No. 1 half pipe (101) is fixedly connected to a bottoming assembly page (104) on the outside, the prefabricated pile (2) is fixedly connected to an assembly groove (201) on the top, the assembly groove (201) is slidably connected to a bolt assembly (202), the bottoming assembly page (104) extends into the assembly groove (201), and the bottoming assembly page (104) is sleeved with the bolt assembly (202); A bending buffer ring (3) is sleeved between two adjacent pipe segment modules (1); a buffer groove (301) is provided on the outer surface of the bending buffer ring (3); a ferrule (302) is rotatably connected to the inside of the buffer groove (301); a limiting crescent (303) is fixedly connected to the outside of one end of the ferrule (302); tooth pieces (304) are movably connected to both sides of the surface of the limiting crescent (303); a screw (305) is threadedly connected to the middle of the limiting crescent (303); a wedge block (306) is rotatably connected to the inner end of the screw (305); and two ends of the wedge block (306) correspond to two tooth pieces (304) respectively.
2. A cable protection tube for offshore wind power engineering according to claim 1, characterized in that: A reinforcement steel frame (203) is embedded inside the assembly groove (201), and the prefabricated pile (2) is made of reinforced concrete material.
3. A cable protection tube for offshore wind power engineering according to claim 1, characterized in that: A sealing gasket (307) is fixedly connected between the two ends of two adjacent bending buffer rings (3), and the opening ends of the first half pipe (101), the second half pipe (102) and the third half pipe (103) are in contact with and correspond to the sealing gasket (307).
4. A cable protection tube for offshore wind power engineering according to claim 3, characterized in that: The surface of the sealing gasket (307) is provided with equidistant protrusions (308); the opening ends of the first half pipe (101), the second half pipe (102), and the third half pipe (103) are provided with corresponding grooves (309) corresponding to the protrusions (308); and the bending buffer ring (3) and the sealing gasket (307) are both made of corrosion-resistant rubber material.
5. A cable protection tube for offshore wind power engineering according to claim 1, characterized in that: A bending limiter (4) is selectively installed between two adjacent pipe segment modules (1), wherein the bending limiter (4) is composed of a plurality of limiting units (401).
6. A cable protection tube for offshore wind power engineering according to claim 5, characterized in that: The exterior of the second half pipe (102) is fixedly connected with an anchor cable page (105), the exterior of the limiting unit (401) is fixedly connected with a limiting cable ring (402), and a limited bending steel cable (403) is fixedly connected between two adjacent anchor cable pages (105), and the limited bending steel cable (403) passes through the limiting cable rings (402) in sequence.
7. A cable protection tube for offshore wind power engineering according to claim 6, characterized in that: A prefabricated pile (2) is also buried just below the top of the bending limiter (4), and a limited floating steel cable (404) is fixedly connected between the anchor cable leaf (105) and the prefabricated pile (2).
8. A cable protection tube for offshore wind power engineering according to claim 7, characterized in that: A cable sleeve (405) is fixedly connected to the connection end of the floating limiting steel cable (404) and the prefabricated pile (2), and the cable sleeve (405) is sleeved with the bolt assembly (202).