CN219412802U - Marine floating type fan foundation - Google Patents

Abstract

The utility model discloses an offshore floating type fan foundation, which comprises an upright post and a heave cabin, wherein the upright post is fixed on a seabed through a catenary mooring system; the bottom of the upright post is provided with a separable truss structure, and the heave cabin is fixedly connected with the bottom of the truss structure; the upright posts are arranged in at least three, triangular or polygonal, and adjacent upright posts are connected through connecting pieces. Through setting up truss structure between stand and heave cabin to reduce the focus of floating fan, improve floating fan's motion performance and stability, reduced floating fan's cost to a certain extent simultaneously.

Description

Marine floating type fan foundation

Technical Field

The utility model belongs to the technical field of floating type offshore wind power, and particularly relates to an offshore floating type fan foundation.

Background

With the continuous development of offshore wind power, offshore valuable fields are basically developed, and the offshore wind power tends to develop to deep open sea. The floating type fan foundation has low sensitivity to water depth and obvious economical efficiency compared with a fixed type foundation, and is widely considered to be a main foundation form for development of a deep sea wind power plant. However, the wind power on the sea in the 2021 national level is cancelled, and the wind power on the sea enters the cheap age. The floating type offshore wind power generation at home and abroad has high development cost, and particularly in the development of a floating type offshore wind power plant, how to reduce the development cost is a key technical problem of the development of the floating type offshore wind power generation, and meanwhile, the floating type offshore wind power generation is directly related to the landing of projects.

Chinese patent application publication No. CN112357000a discloses a floating fan foundation on sea, including stand and heave plate, heave plate sets up in the stand below, the stand is provided with three, and three stand is regular triangle arrangement, is provided with truss structure between the adjacent stand, truss structure symmetric distribution is on regular triangle's trilateral, the stand includes first inlayer steel sheet and first outer steel sheet, first inlayer steel sheet and first outer steel sheet are hollow column structure, first inlayer steel sheet sets up in the hollow column of first outer steel sheet, first outer steel sheet and first inlayer steel sheet coaxial line set up, be provided with the installation department that is used for installing wind-powered electricity generation tower section of thick bamboo on one of them stand. Concrete is poured in the cavity between the first outer layer steel plate and the first inner layer steel plate, the rigidity and fatigue strength of the foundation structure are enhanced, the steel consumption is reduced, and the cost is saved. However, this fan foundation does not improve the movement performance of the floating fan float.

Disclosure of Invention

The utility model aims to provide a floating type fan foundation on the sea, which improves the motion performance of the floating type fan by reducing the gravity center of the floating type fan and reduces the cost of the floating type fan to a certain extent.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an offshore floating type fan foundation comprises a stand column and a heave cabin, wherein the stand column is fixed on a seabed through a catenary mooring system; the structure is characterized in that: the bottom of the upright post is provided with a separable truss structure, and the heave cabin is fixedly connected with the bottom of the truss structure; the upright posts are arranged in at least three, triangular or polygonal, and adjacent upright posts are connected through connecting pieces.

The section shape of the upright post can be round, rectangular with round corners or polygonal; the section sizes of the stand columns can be the same or different; the upright post can be made of steel or concrete, and the ballast water or other heavy objects are placed in the upright post for ballasting according to specific construction conditions. The truss structure and the upright post are separable, the truss structure can be assembled with the upright post and then is launched to install the underwater part, and the truss structure and the upright post can be assembled after the upright post is installed underwater, so that the truss structure is particularly determined according to the conditions of construction and installation sites. After the fan foundation is completed, a fan can be arranged on one of the upright posts. The truss structure is arranged between the upright post and the heave cabin, so that the structural arrangement of the foundation of the floating type fan is changed, the gravity center of the floating type fan is lowered, the longitudinal/transverse damping of the floating body of the floating type fan is increased, and the movement performance of the floating type fan can be improved. The floating type fan has the advantages that the motion response of the floating type fan is similar to that of the column type floating platform, the floating type fan is enabled to have smaller motion response after the integral gravity center of the floating type fan is lowered, the floating type fan has better stability, the structure size of the floating type fan can be reduced under the condition that the operation requirement of the fan is met, meanwhile, the power generation efficiency of the fan can be improved, the cost of the floating type fan can be reduced to a certain extent, and the comprehensive income and the development value of the floating type fan are increased.

Preferably, a plurality of sleeves are arranged on the side surface of the bottom of the upright post, a plurality of inserting points are arranged on the top of the truss structure, and the number of the sleeves is equal to that of the inserting points, and the positions of the sleeves are corresponding to that of the inserting points; the insert tip penetrates through the sleeve and is limited by the fastener, and the insert tip is fixedly connected with the sleeve by mortar. The fastener may be a nut or a pin. When the truss structure is installed, after the insertion tip penetrates through the sleeve and is temporarily limited through the fastener, the truss structure is fixedly installed transversely and longitudinally in a grouting mode.

Specifically, the sleeve bottom is equipped with the horn mouth, is equipped with the inflatable seal ring in this horn mouth and seals. The bottom of the sleeve is set to be a horn mouth, so that the installation of the insertion tip can be guided, and the inflatable sealing ring is arranged for sealing after the grouting of the concrete in the sleeve is finished, so that the leakage of mortar can be prevented.

Preferably, the heave cabin is of a flat cabin structure, the height of the heave cabin is 1-2 m, and a ballast is arranged in the heave cabin. The heave cabin has deep draft and small flow load, can ballast high-density structures or set sea-going components for ballasting according to the performance requirement of the floating fan, and the truss height and the cabin body size of the heave cabin can be adjusted and designed according to the ocean environment condition and the fan power.

Preferably, the truss structure is formed by splicing round pipes. The truss structure formed by splicing the round pipes has high rigidity and small flow resistance.

Specifically, the connecting piece includes upper connecting beam and lower connecting beam, and the upper portion of adjacent stand links to each other through upper connecting beam, and the lower part of adjacent stand links to each other through lower connecting beam.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the offshore floating type fan foundation, the truss structure is arranged between the upright posts and the heave cabin, so that the structural arrangement of the floating type fan foundation is changed, the gravity center of the floating type fan is lowered, the longitudinal/transverse damping of the floating body of the floating type fan is increased, and the movement performance of the floating type fan is improved.

2. According to the offshore floating type fan foundation, after the integral gravity center of the floating type fan is lowered, the motion response of the floating body is smaller, the stability is better, the structural size of the floating body can be reduced under the condition that the operation requirement of the fan is met, meanwhile, the power generation efficiency of the fan is improved, the cost of the floating type fan is lowered to a certain extent, and the comprehensive income and the development value of the floating type fan are increased.

Drawings

FIG. 1 is an isometric view of an offshore floating fan foundation of the present utility model;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a side view of the truss structure of FIG. 1;

fig. 5 is a schematic view of the connection structure between the truss structure and the column in fig. 1.

In the drawings

1-stand columns; 2-heave chamber; 3-truss structure; 4-connecting piece; 41-upper connecting beam; 42-lower connecting beam; 5-a fan; 6-sleeve; 7-inserting a tip; 8-fastening pieces; 9-inflating a sealing ring; 10-mortar.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

As shown in fig. 1, an offshore floating type fan foundation comprises three upright posts 1 and a heave cabin 2, wherein a separable truss structure 3 is arranged at the bottom of each upright post 1, the heave cabin 2 is fixedly connected with the bottom of the truss structure 3, and the upright posts 1 are fixed on a seabed through a catenary mooring system. The truss structure 3 can be assembled by constructing the truss structure 3 and the upright posts 1 in the sea after the main body structure is manufactured. As shown in fig. 3, the cross section of the upright posts 1 is circular, three upright posts 1 are arranged in an equilateral triangle, and a fan 5 is arranged on one adjacent upright post 1. As shown in fig. 1 and 2, adjacent columns 1 are connected by a connecting piece 4, the connecting piece 4 comprises an upper connecting beam 41 and a lower connecting beam 42, the upper parts of the adjacent columns 1 are connected by the upper connecting beam 41, and the lower parts of the adjacent columns 1 are connected by the lower connecting beam 42. As shown in fig. 2, 4 and 5, the heave chamber 2 has a flat chamber structure with a height of about 1.5m, and is internally provided with other high-density or sea-going components such as reinforcing ribs and reinforcing ribs, filled concrete and the like designed according to the requirements for ballasting. The truss structure 3 is formed by splicing round pipes, three insertion points 7 are arranged at the top of the truss structure, three sleeves 6 are arranged on the outer side face of the bottom of the upright 1, and the positions of the sleeves 6 correspond to the positions of the insertion points 7.

When the offshore floating type fan foundation is installed, firstly, after the floating fan main body is launched, the truss structure 3 is fixedly connected with the heave cabin 2, and then is sunk into the water as a whole, and is towed to the lower part of the upright post 1. After the insertion tip 7 at the top of the truss structure 3 is inserted into the sleeve 6 from the bell mouth at the bottom of the sleeve 6, temporary limiting is performed through the fastening piece 8, and the fastening piece 8 can be a nut or a pin shaft. Mortar 10 is poured between the insert tip 7 and the sleeve 6, so that the upright column 1 is fixedly connected with the truss structure 3, an inflatable sealing ring 9 is arranged in a horn mouth at the bottom of the sleeve 6 to seal, and an air bag and the sleeve 6 are extruded and sealed through the inflatable sealing ring 9 so as to prevent the mortar 10 from leaking, and the installation work of the civil engineering part is finished.

The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the present utility model, in which equivalents thereof will occur to persons skilled in the art upon reading the present utility model, are intended to fall within the scope of the utility model as defined by the appended claims.

Claims (6)

1. An offshore floating type fan foundation comprises a stand column (1) and a heave cabin (2), wherein the stand column (1) is fixed on a seabed through a catenary mooring system; the method is characterized in that: the bottom of the upright post (1) is provided with a separable truss structure (3), and the heave cabin (2) is fixedly connected with the bottom of the truss structure (3); the upright posts (1) are arranged in at least three triangular or polygonal shapes, and adjacent upright posts (1) are connected through connecting pieces (4).

2. The offshore floating wind turbine foundation of claim 1, wherein: a plurality of sleeves (6) are arranged on the side surface of the bottom of the upright post (1), a plurality of inserting tips (7) are arranged at the top of the truss structure (3), and the number of the sleeves (6) is equal to that of the inserting tips (7) and the positions of the sleeves are corresponding to that of the inserting tips (7); the insert tip (7) penetrates through the sleeve (6) and is limited by the fastener (8), and the insert tip (7) is fixedly connected with the sleeve (6) through mortar (10).

3. The offshore floating wind turbine foundation of claim 2, wherein: the bottom of the sleeve (6) is provided with a bell mouth, and an inflatable sealing ring (9) is arranged in the bell mouth for sealing.

4. The offshore floating wind turbine foundation of claim 1, wherein: the heave cabin (2) is of a flat cabin structure, the height of the heave cabin is 1-2 m, and a ballast is arranged in the heave cabin (2).

5. The offshore floating wind turbine foundation of claim 1, wherein: the truss structure (3) is formed by splicing round pipes.

6. The offshore floating wind turbine foundation of claim 1, wherein: the connecting piece (4) comprises an upper connecting beam (41) and a lower connecting beam (42), wherein the upper parts of the adjacent upright posts (1) are connected through the upper connecting beam (41), and the lower parts of the adjacent upright posts (1) are connected through the lower connecting beam (42).