CN-121993354-A - Connection structure and method for disposal platform and fan foundation

CN121993354ACN 121993354 ACN121993354 ACN 121993354ACN-121993354-A

Abstract

The invention belongs to the technical field of offshore wind power, and particularly relates to a connection structure and a connection method of a disposal platform and a fan foundation. The fan is installed on the pipe frame post leg of offshore platform, is fixed with the transition piece at the lower tip of the stand of fan the lower tip of transition piece is fixed with inserts the point, insert the center axis of point with the center axis coincidence of stand, insert the point coaxial insertion the upper end of pipe frame post leg, pipe frame post leg with transition piece or stand fixed connection.

Inventors

ZHANG WEIJIN
Gou Hongshun
CHEN TONGYAN
XING JIANJUN
Gong Kunming
REN XIAOYONG
LIU YINGJIE
FENG CHUNJIAN
REN XUE
ZHANG XIAOFENG

Assignees

中国石油化工股份有限公司
中石化石油工程技术服务股份有限公司
中国石化集团胜利石油管理局有限公司新能源开发中心
中石化石油工程设计有限公司

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (10)

1. A connection structure of a disposal platform and a fan foundation is characterized in that a fan is arranged on a guide pipe frame column leg (1) of the disposal offshore platform, A transition piece (3) is fixed at the lower end part of a stand column (2) of the fan, an inserting tip (4) is fixed at the lower end part of the transition piece, the central axis of the inserting tip (4) coincides with the central axis of the stand column (2), the inserting tip (4) is coaxially inserted into the upper end part of a conduit frame column leg (1), and the conduit frame column leg (1) is fixedly connected with the transition piece (3) or the stand column (2).
2. The connection between a disposal platform and a fan foundation of claim 1, wherein, The transition piece (3) is in a cylindrical shape, the outer diameter size of the transition piece is matched with the inner diameter sizes of the upright post (2) and the conduit frame column leg (1), The upper end part of the transition piece (3) is coaxially fixed on the inner side of the upright post (2), and the lower end part of the transition piece is positioned on the inner side of the conduit frame post leg (1).
3. The connection structure of a disposal platform and a fan foundation according to claim 1, wherein the transition piece (3) is configured in a flat plate shape, the end face size of the transition piece (3) is larger than the end face sizes of the upright post (2) and the conduit frame post leg (1), the upper end face of the transition piece (3) is fixedly connected with the lower end face of the upright post (2), and the lower end face is fixedly connected with the upper end face of the conduit frame post leg (1).
4. The connection structure of the disposal platform and the fan foundation according to claim 3, wherein a plurality of rib plates (5) are uniformly arranged on the outer side surface of the lower end part of the upright post (2) along the circumferential direction, and the lower end surface of each rib plate (5) is fixedly connected with the upper end surface of the transition piece (3).
5. A connection structure of a disposal platform and a fan foundation according to claim 3, characterized in that a positioning column (21) is coaxially arranged in the upright (2), and a positioning hole (31) for adapting to the positioning column (21) is arranged on the transition piece (3).
6. The connection structure of a disposal platform and a fan foundation according to any one of claims 1 to 5, wherein a plurality of reinforcing ribs (41) are arranged in the insert tip (4), the reinforcing ribs (41) are fixedly connected with the inner wall of the insert tip (4) in a welding manner, and the reinforcing ribs (41) are fixedly connected in a welding manner.
7. The connection structure of a disposal platform and a fan foundation according to any one of claims 1 to 5, wherein a cover plate (42) is provided at the lower end of the insertion tip (4) in a sealing manner by welding.
8. The connection method of the disposal platform and the fan foundation is characterized by comprising the following steps: s1, preprocessing an offshore platform; S2, measuring the distance and the radial dimension of each guide pipe frame column leg of the offshore platform; S3, setting the connection structure of the disposal platform and the fan foundation according to any one of claims 1-7 according to the size relation between the radial dimension of the column leg of the conduit frame and the radial dimension of the upright post of the fan.
9. The method of connecting a disposal platform to a fan foundation according to claim 8, wherein in S3, the disposal platform to fan foundation connection structure according to claim 2 is provided when the radial dimension of the conduit frame leg is the same as the radial dimension of the upright of the fan.
10. The method of connecting a disposal platform to a fan foundation according to claim 8, wherein in S3, when the radial dimension of the conduit frame leg is different from the radial dimension of the upright of the fan, the disposal platform to fan foundation connection structure according to claim 3 or 4 is provided.

Description

Connection structure and method for disposal platform and fan foundation Technical Field The invention belongs to the technical field of offshore wind power, and particularly relates to a connection structure of a discarding platform and a fan foundation and a connection method of the discarding platform and the fan foundation. Background Offshore wind power generation is an important renewable energy form, and is widely concerned and rapidly developed. However, the construction and maintenance costs of offshore wind farms are relatively high, which usually have to be done in deep sea areas, where the sea bed conditions are complex, placing higher demands on the stability and durability of the wind power generator set. At the same time, as offshore oil production is gradually reduced, many offshore oil production platforms face problems of abandonment and dismantling. The abandoned offshore oil production platform has a huge recycling potential in structure and position although the abandoned offshore oil production platform is not used for oil exploitation any more. The platforms are used as jacket structures for offshore wind power generation, so that the use of new materials can be reduced, the cost of newly-built wind power generation facilities can be reduced, the energy utilization efficiency can be improved, and the sustainable utilization of resources can be realized. In the prior art, in the modification of the jacket structure of the offshore oil production platform after the service expiration, the original upper block structure is often required to be replaced integrally, the construction period is longer, and the difficulty is higher. Accordingly, there is a need to develop a mounting structure and a mounting method capable of rapidly mounting a wind turbine for offshore operation to an offshore platform. Disclosure of Invention In view of the above technical problems, the present invention aims to provide a connection structure between a disposal platform and a fan foundation, which enables a fan to be quickly installed on a disposed offshore platform. The invention also provides a connection method of the abandoned platform and the fan foundation, and the method can be used for quickly installing the fan on the abandoned offshore platform. According to the invention, the connection structure of the disposal platform and the fan foundation is provided, the fan is arranged on the guide pipe frame column leg of the offshore platform, the lower end part of the upright post of the fan is fixedly provided with a transition piece, the lower end part of the transition piece is fixedly provided with an insert tip, the central axis of the insert tip coincides with the central axis of the upright post, the insert tip is coaxially inserted into the upper end part of the guide pipe frame column leg, and the guide pipe frame column leg is fixedly connected with the transition piece or the upright post. In a specific embodiment, the transition piece is configured in a cylindrical shape, the outer diameter dimension of the transition piece is matched with the inner diameter dimension of the upright post and the conduit frame post leg, the upper end part of the transition piece is coaxially fixed on the inner side of the upright post, and the lower end part of the transition piece is positioned on the inner side of the conduit frame post leg. In a specific embodiment, the transition piece is configured in a flat plate shape, the end face size of the transition piece is larger than the end face sizes of the upright post and the conduit frame column leg, the upper end face of the transition piece is fixedly connected with the lower end face of the upright post, and the lower end face is fixedly connected with the upper end face of the conduit frame column leg. In a specific embodiment, a plurality of rib plates are uniformly arranged on the outer side face of the lower end part of the upright post along the circumferential direction, and the lower end face of each rib plate is fixedly connected with the upper end face of the transition piece. In a specific embodiment, a positioning column is coaxially arranged in the upright, and a positioning hole for matching with the positioning column is arranged on the transition piece. In a specific embodiment, a plurality of reinforcing ribs are arranged in the insertion tip, the reinforcing ribs are fixedly connected with the inner wall of the insertion tip in a welding mode, and the reinforcing ribs are fixedly connected in a welding mode. In a specific embodiment, a cover plate is sealed and arranged at the lower end part of the insertion tip in a welding mode. According to the invention, a method for connecting the disposal platform with the fan foundation is also provided, which comprises the following steps: s1, preprocessing an offshore platform; S2, measuring the distance and the radial dimension of each guide pipe frame column leg of the offshore platform; s3, s