CN112758260A

CN112758260A - Integral installation ship for offshore wind turbine

Info

Publication number: CN112758260A
Application number: CN201911073851.8A
Authority: CN
Inventors: 韩斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2021-05-07

Abstract

The integral installation ship of the offshore wind turbine is a special ship specially designed for transportation, installation, maintenance and repair of the offshore wind turbine, adopts a rotary tower cylinder technology, can reduce the difficulty of installation and maintenance of the offshore wind turbine to less than half of the height of a tower cylinder, and is fixed at the height of 40 meters. The ship machinery can realize the one-time transportation, installation and maintenance work of the tower drum fan blade, reduce the installation and maintenance difficulty of the offshore wind power and effectively reduce the installation cost and the later maintenance cost of the offshore wind power.

Description

Integral installation ship for offshore wind turbine

Technical Field

How to install an integral wind power generation unit with any height at a height of 40 m? In the prior art, a crane with a height of more than 100 meters is needed when a tower with a height of 100 meters is needed, and a mechanical device capable of installing a tower and a fan with a height of more than 100 meters can be used only by 40 meters? Can not control the maintenance difficulty of the fan at the height of 40 meters?

In a big tree in nature, the height of the tree is twice as high as the original height, the area capable of absorbing sunlight is increased to four times, and the weight of the tree is increased to 8 times. The wind driven generator equipment is similar to a natural big tree, the height of the wind driven generator equipment is increased to two times, the wind sweeping area and the generating efficiency are increased to four times, the weight of the wind driven generator equipment is increased to eight times under the condition of the same material, the installation difficulty of the wind driven generator equipment is increased to sixteen times, and the eight times of weight is lifted to the height of two times. With the technological progress, the larger the offshore wind turbine is, the larger the required installation equipment is, and the installation cost is rapidly increased. We must devise new methods to reduce the difficulty of installation.

Background

The method comprises the steps of looking at a video of a pile driving barge matched with an offshore wind turbine, driving the pile driving barge matched with the offshore wind turbine to a specified sea area, extending four struts to be fixed on a seabed, lifting a ship body of the pile driving barge matched with the offshore wind turbine, extending a sleeve from the side edge of the ship body, hanging a pipe of a foundation section of the offshore wind turbine into the sleeve by a crane to be fixed, and driving the pipe of the foundation section of the offshore wind turbine into the seabed by the pile driving barge to finish foundation installation of the offshore wind turbine. And then the sleeve is opened, the four struts are retracted, the ship body falls into water, and the ship is driven to the next designated sea area to continue piling and installing the fan foundation. The automation and high efficiency of the foundation of the offshore wind turbine gives people a great feeling. The corresponding offshore tower fan mounting section is inefficient and requires at least a crane in excess of 100 meters to mount a 100 meter tall tower column. How to efficiently finish the reduction of the construction cost of the fan mounting part? How to do it easy in future offshore wind turbine maintenance?

Disclosure of Invention

The invention relates to an offshore wind turbine integrated installation ship (having functions of transporting and maintaining a wind turbine at the same time) by referring to an offshore wind turbine matched piling ship.

The integral installation ship of the offshore wind turbine shown in the figure 1 is a catamaran, the distance between the catamaran and the catamaran is 20 meters, and four supporting columns are arranged on two sides of a ship body and can be inserted into a seabed to lift the whole ship body. The middle of the left hull and the right hull is erected with a 40-meter high upright post, the top end of the upright post is provided with a rotatable cross beam, the middle of the cross beam is provided with a sleeve which can be opened, a triangular support frame is connected below the sleeve, the top end of the triangular support frame is provided with a sleeve inclination angle adjusting motor, and the sleeve inclination angle adjusting motor moves along an arc guide rail to change the level and the vertical state of the sleeve. The left and right supports extending out of the stern by 40 meters are closed together in the middle to form a stern bracket, the bracket can assist in supporting a fan and blades at the top of the tower barrel in a horizontal lying state, and the gravity center of the whole fan equipment in a transportation and maintenance state is positioned between the rotatable cross beam and the stern bracket.

Rotatable tower section of thick bamboo technique presss from both sides in the sleeve tower section of thick bamboo post can be around the rotatory 90 degrees of crossbeam on the hull middle part support to can adjust a tower section of thick bamboo and be in level and vertical state, easily accomplish the switching of whole fan horizontal transport maintenance state and vertical installation electricity generation state. Because the rotatable cross beam only needs to rotate for a fixed 90 degrees from the horizontal state to the vertical state, in order to save cost, a bearing is not needed between the rotatable cross beam and the 40-meter upright post of the ship body, and a cylindrical sliding interface is adopted.

The integral installation ship of the offshore wind turbine is driven to a designated sea area, when the center of a tower of the foundation of the offshore wind turbine and the center of a sleeve on a rotatable beam in the middle of a ship body are positioned at the same vertical position, four supporting columns on two sides of the ship body are put down, the supporting columns fall on a seabed, and the whole ship body is supported and lifted by 1 meter higher than the foundation of the offshore wind turbine. Water is injected into a cabin at the bottom of the tower or a counterweight bag outside the bottom of the tower to reach the rated weight, and the integral gravity center of the fan falls on a rotatable cross beam (the anchor chain winch at the front part of the ship body can be used for pulling the bottom of the tower downwards to replace part of counterweights). And adjusting the inclination angle of the sleeve to adjust the motor and erecting the tower cylinder. The height of the ship body is reduced by 1 meter, so that the tower cylinder column is contacted and fixed with the offshore foundation tower cylinder, and the offshore wind turbine installation is completed. The sleeve tightly holding the tower cylinder column is opened, the support columns on two sides of the ship body are lifted, the ship falls into water, and meanwhile, a water injection counterweight cabin or a counterweight bag at the bottom of the tower cylinder drains water and is recovered. The ship leaves the wind power plant and returns to the wharf to carry and install the next wind power unit.

Drawings

Fig. 1 is a front view comparing a transport maintenance state (left) and an installation state (right) of a fan blade at the top of a tower of fig. 101, a tower column of 102, a sleeve of 103 fixed on a rotatable beam, a rotatable beam of 104, a rotatable beam support of 105, a hull support of 106, a tilt angle adjustment guide rail of an arc-shaped sleeve of 107, a tilt angle adjustment motor of 108 sleeve, a hull of 109, a counterweight filled with water at the bottom of a tower of 110, a foundation tower column of 111 fixed on the seabed, and a seabed of 112.

FIG. 2 is a side view of a hull column 201 raised, tower column 202, rotatable spar 203, tower top blades 204, tower top fan 205, sleeves 206 secured to the rotatable spar, arcuate sleeve tilt angle adjustment guide rails 207, stern tow 209, rotatable spar support, sleeve tilt angle adjustment motor 210, hull 211 in a transport service position.

FIG. 3 is a side view showing a tower fan blade 301, a sleeve 302 fixed to a rotatable beam, a bracket 303 between the sleeve and a sleeve tilt angle adjustment motor, a rotatable beam 304, a sleeve tilt angle adjustment motor 305, an arc-shaped sleeve tilt angle adjustment guide rail 306, a rotatable beam bracket 307, a counterweight 308 with the bottom of the tower filled with water, a hull 309, a hull support 310, a foundation tower column 311 fixed to the seabed, and the seabed 312.

Detailed Description

The weight of a fan blade of the 5MW unit is about three hundred tons, the weight of a tower barrel is two hundred tons, the length of the blade is about 70 meters, and the height of the tower barrel is about 100 meters. The distance between the bottom of the tower barrel and the rotatable cross beam is 40 meters, the distance between the top of the tower barrel and the rotatable cross beam is 60 meters, the whole gravity center can be located at the rotatable cross beam only by injecting water into a cabin arranged at the bottom of the tower barrel or binding a water bag counterweight of 450 tons outside, the whole set of wind power equipment freely rotates around the rotatable cross beam, the load of the rotatable cross beam is 1000 tons, and the rotatable cross beam is matched with an offshore wind turbine integral installation ship of 2000 tons.

The weight of a fan blade of a 10MW unit is about six hundred tons, the weight of a tower barrel is about five hundred tons, the length of the blade is about 100 meters, and the height of the tower barrel is about 130 meters. The distance between the bottom of the tower barrel and the rotatable cross beam is 40 meters, the distance between the top of the tower barrel and the rotatable cross beam is 90 meters, water injection is carried out in a cabin arranged at the bottom of the tower barrel or a 1350-ton water bag counterweight is bound outside the tower barrel, the integral gravity center can be located at the rotatable cross beam, the whole set of wind power equipment freely rotates around the rotatable cross beam, and the load of the rotatable cross beam is 2500 tons. The matched offshore wind turbine integral installation ship is 5000 tons in level.

Fig. 2, in a transportation maintenance state, the blade of the tower cylinder fan is integrally laid down and installed on the integral installation ship of the offshore fan in a wharf factory, and the installation difficulty is fixed to be 40 m high; the tower column and the fan are integrally laid in the sleeve on the beam in the middle of the ship and on the stern support arm, the bottom of the tower column is 40 meters away from the beam in the middle of the ship, the top of the tower column is rested on the stern support arm, the fan paddle horizontally extends at the high altitude of 40 meters, one paddle is parallel to the tower column and is located at the high altitude of 2 meters of the tower column, the paddle is convenient to overhaul and clean when rotating to the position, and the other two paddles and the tower column form an included angle of 120 degrees.

And 3, in an installation state, the integral offshore wind turbine installation ship is driven to a specified sea area, when the centers of the tower barrel of the offshore wind turbine foundation and the sleeve on the rotatable beam in the middle of the ship body are positioned at the same vertical position, four supporting columns on two sides of the ship body are put down, the supporting columns fall on a seabed, and the whole ship body is supported and lifted and exceeds the height of the offshore wind turbine foundation by 1 meter. And injecting water into the cabin at the bottom of the tower or injecting water into the counterweight bag outside the bottom of the tower to reach the rated weight, and enabling the integral gravity center of the fan to fall on the rotatable cross beam. And adjusting the inclination angle of the sleeve to adjust the motor and erecting the tower cylinder. The height of the ship body is reduced by 1 meter, so that the tower cylinder column is contacted and fixed with the offshore foundation tower cylinder, and the offshore wind turbine installation is completed. The sleeve tightly holding the tower cylinder column is opened, the support columns on two sides of the ship body are lifted, the ship falls into water, and meanwhile, a water injection counterweight cabin or a counterweight bag at the bottom of the tower cylinder drains water and is recovered. The ship leaves the wind power plant and returns to the wharf to carry and install the next wind power unit.

If the fan or the blade is damaged after a plurality of years or after a large storm, the ship can be integrally installed by the offshore fan, the reverse process of the installation process is executed, the wind turbine set and the tower barrel are switched from the vertical state to the horizontal state, and then field maintenance of 40 m height is carried out or the seriously damaged fan is dragged to a land wharf for maintenance.

The data used herein are only preferred examples and are not intended to limit the invention in any way; the technical solutions described herein or those skilled in the art can design similar technical solutions based on the teaching of the present invention, and all that achieves the above technical effects is within the scope of the claims. Nothing described herein applies to the prior art.

Claims

1. The integral installation ship of the offshore wind turbine is a special ship specially designed for transportation, installation and maintenance of the offshore wind turbine, can reduce the difficulty of installation and maintenance of the offshore wind turbine to less than half of the height of a tower cylinder, and is fixed at the height of 40 meters; the integral installation ship of the offshore wind turbine has the characteristic of double ship bodies, the distance between the double ship bodies is 20 meters, and the two sides of each ship body are provided with four supporting columns which can be inserted on a seabed to lift the whole ship body; the middle of the left hull and the right hull is erected with a 40-meter high stand column, the top end of the stand column is provided with a rotatable cross beam, the middle of the cross beam is provided with a sleeve which can be opened, a tripod is connected below the sleeve, the top end of the tripod is provided with a sleeve inclination angle adjusting motor, and the sleeve inclination angle adjusting motor moves along an arc-shaped sleeve inclination angle adjusting guide rail.

2. The sleeve of claim 1, adapted to be opened to grip a tower column such that the bottom of the tower column is 40 meters from the rotatable beam, and the tower column to be sleeved by the sleeve is adapted to be rotated 90 degrees about the rotatable beam to switch between a horizontal lay-flat position and a vertical installation position.

3. The tower column is convenient to transport and maintain when being in a horizontal state on a ship, the support stretches out by 40 meters from the tail part of the ship, the support is closed in the middle, a stern supporting hand is formed, the supporting hand can assist in supporting a fan and blades at the top of the tower in a lying state, and the gravity center of the whole fan equipment in a transport and maintenance state is located between the cross beam and the stern supporting hand.

4. The gravity center of the whole set of fan equipment is adjusted to the rotatable beam in a mode of injecting water into the compartment at the bottom of the tower column or injecting water into the water bag bound outside the bottom of the tower column to increase the balance weight before installation.

5. During installation, the sleeve inclination angle adjusting motor moves along the arc-shaped sleeve inclination angle adjusting guide rail to realize stable switching control of the tower from a horizontal state to a vertical installation state.