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CN-117266120-B - Local sinking type inner platform for anchoring submarine cable in single pile foundation

CN117266120BCN 117266120 BCN117266120 BCN 117266120BCN-117266120-B

Abstract

The invention discloses a local sinking type inner platform for anchoring a submarine cable in a single pile foundation, which belongs to the technical field of inner platforms of single pile foundations and comprises a platform plate, wherein a population inlet is arranged on the platform plate; the marine cable feeding device comprises a platform plate, a bearing bracket, a plurality of bearing brackets, a beam system structure and a marine cable feeding hole, wherein the bearing brackets are distributed along the circumferential direction of the platform plate, the beam system structure is fixedly connected between the platform plate and the bearing bracket, a sinking cavity is arranged on the beam system structure and is positioned under a feeding mouth, and the beam system structure is provided with a marine cable feeding hole communicated with the sinking cavity. The invention can simultaneously meet the operation space requirement of constructors and the minimum turning radius requirement of the submarine cable access redundant bridge under the premise of not adjusting the elevation of the inner platform.

Inventors

  • SUN YI
  • XIE LISHENG
  • Diao nan
  • GAO CHAO
  • HE RUI
  • HUANG XUHUI
  • DING PENGCHENG

Assignees

  • 上海勘测设计研究院有限公司

Dates

Publication Date
20260505
Application Date
20231109

Claims (7)

  1. 1. A locally submerged inner platform for single pile foundation inner sea cable anchoring, comprising: a platform plate (110), wherein the platform plate (110) is provided with a population inlet (115); A plurality of bearing brackets (120), wherein the bearing brackets (120) are distributed along the circumferential direction of the platform plate (110); A beam system structure (130), wherein the beam system structure (130) is fixedly connected between the platform plate (110) and the bearing bracket (120); the beam system structure (130) is provided with a sinking cavity (133), the sinking cavity (133) is positioned right below the inlet (115), and the beam system structure (130) is provided with a submarine cable inlet hole (134) communicated with the sinking cavity (133); the beam system structure (130) comprises an equal cross-section beam (131) and a variable cross-section beam (132) which are vertically and fixedly connected, a sinking cavity (133) is formed between the equal cross-section beam (131) and the variable cross-section beam (132), a sealing plate assembly (137) is fixedly connected to the lower portion of the sinking cavity (133), and a submarine cable inlet hole (134) is formed in the sealing plate assembly (137).
  2. 2. The locally submerged inner platform for single pile foundation inner submarine cable anchoring according to claim 1, wherein the platform plate (110) comprises a cover plate (111), a ring plate (112) and a ring plate (113), the cover plate (111) is fixedly arranged on the upper portion of the beam structure (130), the ring plate (112) is coaxially arranged on the outer side of the cover plate (111), the ring plate (113) is fixedly connected between the cover plate (111) and the ring plate (112), and the ring plates (113) are uniformly distributed along the circumferential direction of the cover plate (111).
  3. 3. The local submerged inner platform for anchoring the sea cable in the single pile foundation according to claim 2, wherein the inner edge of the annular plate (113) is detachably and fixedly connected with the cover plate (111), the outer edge of the annular plate (113) is detachably and fixedly connected with the ring plate (112), and sealing rubber rings (114) are arranged between the annular plate (113) and the cover plate (111) and the ring plate (112).
  4. 4. The local submerged inner platform for anchoring the sea cable in the single pile foundation according to claim 1, wherein a guide plate (123) is fixedly connected to the upper part of the bearing bracket (120), a guiding inclined plane (124) is arranged on one side of the guide plate (123), and a positioning plane (125) is arranged on the upper part of the guide plate (123).
  5. 5. A partially submerged inner platform for sea cable anchorage in a single pile foundation according to claim 4 wherein a plurality of the load bearing brackets (120) are evenly distributed along the circumferential direction of the platform plate (110).
  6. 6. The locally submerged inner platform for anchoring the sea cable in the single pile foundation according to claim 1, wherein the lower part of the beam system structure (130) is fixedly connected with a seat plate (136), and two sides of the seat plate (136) are provided with limiting plates (135) which can form stop fit with the bearing bracket (120).
  7. 7. A partially submerged inner platform for single pile foundation inner sea cable anchorage according to claim 1, wherein the cover plate (111) of the platform plate (110) is provided with a guard rail (140), and the guard rail (140) is arranged around the population (115) for one week.

Description

Local sinking type inner platform for anchoring submarine cable in single pile foundation Technical Field The invention relates to the technical field of single pile foundation inner platforms, in particular to a local sinking type inner platform for anchoring a sea cable in a single pile foundation. Background In recent years, the development and utilization of offshore wind power resources in China are approaching saturation, the development range of deep and open sea is wider, the wind power resources are richer, the wind speed and the wind frequency are higher, and the offshore wind power industry is gradually heading towards the deep and open sea. As shown in fig. 11, the deep sea area is deeper, and the single pile foundation submarine cable of the fan selects the access mode of the inner wiring of the pile in consideration of the factors of structural safety, convenient installation and the like, and the submarine cable enters the inside of the steel pipe pile through the hole after being discharged from the mud surface of the steel pipe pile. An inner platform, also called a foundation inner platform, is arranged in the steel pipe pile, a submarine cable access hole (also called a submarine cable inlet hole) is formed in the inner platform, a submarine cable passes through the submarine cable access hole upwards and is fixed through an anchoring device at the submarine cable access hole, then the submarine cable is laid along a redundant bridge frame at the upper part of the inner platform, and then the submarine cable is connected into a fan ring main unit. The inner platform of the fan single pile foundation is an operation platform for constructors besides bearing various electrical equipment and monitoring equipment. A constructor stands on the inner platform, the connecting bolts, the grounding rings and other parts of the flange at the upper part of the steel pipe pile can be installed, the cover plate of the inner platform, namely the working surface of the constructor, is not suitable for the height of the cover plate from the upper part of the steel pipe pile to exceed 1.5m, meanwhile, when a submarine cable is connected to the upper redundant bridge after being fixed by the anchoring device, the minimum turning radius requirement of the submarine cable needs to be met, but because part of fan manufacturers adopt standardized unified design, the positions of the redundant bridge and the ring main unit are relatively fixed, the distance between the submarine cable and the redundant bridge is smaller after being fixed by the anchoring device in the conventional inner platform design, and the minimum turning radius requirement cannot be met when the submarine cable is connected to the redundant bridge, if the installation position of the inner platform is adjusted downwards, the installation, overhaul and maintenance operation of the parts such as the tower connecting bolts and the like are inconvenient for the constructor on the inner platform. Therefore, how to meet the requirements of the minimum turning radius of the submarine cable and the manual operation on the height position of the inner platform at the same time becomes a technical problem to be solved by the person skilled in the art. Disclosure of Invention In view of the above, the invention aims to provide a local sinking type inner platform for anchoring a submarine cable in a single pile foundation, so as to solve the technical problem that the existing inner platform cannot meet the requirements of submarine cable turning radius and manual operation at the same time. The technical scheme adopted by the invention is that the local sinking type inner platform for anchoring the submarine cable in the single pile foundation comprises the following components: The platform plate is provided with a population inlet; the bearing brackets are distributed along the circumferential direction of the platform plate; the beam system structure is fixedly connected between the platform plate and the bearing bracket; The beam system structure is provided with a sinking cavity, the sinking cavity is positioned right below the inlet, and the beam system structure is provided with a submarine cable inlet hole communicated with the sinking cavity. Preferably, the platform plate comprises a cover plate, a ring plate and a ring plate, wherein the cover plate is fixedly arranged on the upper portion of the beam system structure, the ring plate is coaxially arranged on the outer side of the cover plate, the ring plate is fixedly connected between the cover plate and the ring plate, and the ring plates are uniformly distributed along the circumferential direction of the cover plate. Preferably, the inner edge of the annular plate is detachably and fixedly connected with the cover plate, the outer edge of the annular plate is detachably and fixedly connected with the ring plate, and sealing rubber rings are arranged between the annular plate and the co