CN101786494B - Mounting ship of offshore wind turbine and construction method thereof - Google Patents

Abstract

The invention relates to an offshore wind turbine installation ship and its construction method, including a crane and pile legs. The installation ship also includes a translation system and a mounting frame system. barrel and engine room; the installation frame system includes two symmetrical frames installed on the left and right sides of the bow and a lifting device, and the lifting device is used to vertically lift the complete fan machine; The trolley is equipped with an electric drive system and an operating platform. The mounting frame system also includes a holding platform, which is set on the mounting frame and is used to hold and lift the wind turbine tower. The mounting frame system also includes a righting device, the righting device is arranged on the mounting frame, and is used to surround and protect the fan tower, and the contact between the righting device and the fan tower is contacted by rollers. Due to the adoption of the above-mentioned structure, the present invention adopts an installation method from top to bottom, separate assembly, and overall placement during installation, which has the advantages of low construction difficulty, low installation cost, and good technical effect.

Description

Offshore wind turbine installation ship and its construction method

technical field

       The invention relates to the field of engineering technology, in particular to an offshore fan installation ship and a construction method thereof.

Background technique

       Currently, there are two installation methods for offshore wind turbines: separate installation and integral installation. Both installation methods are realized by wind turbine installation ships or large offshore cranes. Split installation refers to the installation of various components of the wind turbine from bottom to top on the foundation of the wind turbine at sea; the overall installation means that the wind turbine assembled on the shore is transported to the offshore installation site as a whole, and then installed on the wind turbine foundation . The two installation methods have their own disadvantages. The offshore construction of separate installation is more complicated and difficult, and the construction period is longer; the overall installation requires large barges and large lifting equipment, and the installation cost is high. It is not suitable for the construction of large-scale offshore wind farms. .

Contents of the invention

The technical problem to be solved by the present invention is to provide an offshore fan installation ship with low installation cost and short construction period and its construction method.

In order to solve the above-mentioned technical problems, the present invention includes a crane and pile legs. It is characterized in that the installation ship also includes a translation system and a mounting frame system. The translation system is arranged at the longitudinal center axis of the hull for translation of the tower and The engine room; the installation frame system includes installation frames installed on the left and right sides of the bow and a lifting device, and the lifting device is used to vertically lift the complete wind turbine.

In the above solution, the translation system includes a translation track and a translation trolley, and the trolley is equipped with an electric drive system and an operating platform.

In the above solution, the installation frame system further includes a holding platform, which is used to hold and lift the wind turbine tower.

In the above solution, the installation frame system further includes a centralizing device for encircling and protecting the wind turbine tower.

In the above solution, the contact between the centralizing device and the fan tower adopts roller contact.

In the above scheme, eight guiding and positioning wheels are arranged around the holding platform to prevent the platform from moving along the ship's length and ship's width.

The construction method of an offshore wind turbine installation ship according to any one of the above claims, characterized in that it comprises the following steps:

a. The wind turbine installation ship carries several sets of wind turbine equipment including the tower, engine room, hub and blades to the installation site of the offshore wind turbine. The position of the tower erected by the mounting frame on the ship is aligned with the wind turbine foundation, and the legs of the installation ship are lifted , so that the hull out of the water;

b. Install the engine room, hub and two blades on the deck of the wind turbine installation ship, form a "rabbit ear" style and move them to the lifting platform of the installation frame system;

c. Raise the nacelle so that its height is slightly higher than the first section of the tower;

d. Move the section 1 tower from the ship and fix it on the mounting frame;

e, move down the "rabbit ear" type nacelle and connect with the first section of the tower;

f, Adjust the direction of the hub and install the third blade;

g. Uplift the first section of the tower and the nacelle, and then move the second section of the tower and the third section of the tower for docking installation;

h, move down the assembled fan, dock the tower with the foundation, and complete the installation.

Due to the adoption of the above method, the present invention, on the one hand, relatively moves the crane, fan and ship during the assembly process, which reduces the difficulty of installation and construction of the fan, and completes the installation of the upper part of the fan, including the tower, engine room, hub and blades. It is arranged to be carried out on board; on the other hand, compared with the split installation method, the docking installation between the engine room and the tower of the fan is at a lower position, the hanging amplitude is not large, the requirements for the crane are not high, and the construction is easier.

Description of drawings

The technical solutions of the present invention will be further specifically described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of the mounting frame system of the present invention;

Fig. 2 is the schematic diagram of construction method step b of the present invention;

Figure 3 is a displacement diagram of the cabin;

Figure 4 is a lifting diagram of the cabin;

Figure 5 is a diagram of installing the upper section of the tower;

Fig. 6 is a diagram of lifting the upper section of the tower and rotating the hub;

Figure 7 is a diagram of installing the third blade;

Figure 8 is a rotating hub bitmap;

Figure 9 is a tower diagram for lifting the upper section;

Figure 10 is a tower diagram of the middle section of the installation;

Fig. 11 is a diagram of lifting the middle section of the tower and installing the lower section of the tower;

Figure 12 is a diagram of the location of the wind turbine tower.

Detailed ways

As shown in the figure, the installation frame system includes a lifting device and a mounting frame 1 installed on the left and right sides of the bow. The lifting device is mainly composed of a motor, a pulley block, a wire rope, etc., and can vertically lift the holding platform 3 and the complete fan unit. The lifting height is 60 meters and the lifting weight is 900 tons. The holding platform 3 is an open and close platform. When the wind turbine is installed, it can hold the wind turbine tower tightly and lift it. It can bear the weight of the whole wind turbine and has a lifting capacity of about 800 tons. 8 guide positioning wheels are arranged around the tight platform 3 to prevent the platform from moving along the length and width of the ship. The centralizing device 2 adopts the opening and closing type, which protects the wind turbine tower in the working state, can bear the eccentric load and wind load when the wind turbine is lifted, and prevents the wind turbine from turning over during the lifting process, and the contact with the wind turbine tower adopts roller contact , so that the fan can move up and down smoothly in the device. The righting device 2 can be folded and fully retracted into the installation frame when being folded.

The translation system consists of 2 translation rails and 1 translation trolley. The track span is about 4 meters. The working area of the trolley is 7×7 meters. The travel of the translation system is 60 meters. Swivel, carrying capacity is 400 tons. The translation system is mainly used to move the engine room and the tower. During construction, the engine room and the tower are hoisted to the trolley by the fixed crane on the ship, and then the engine room and the tower are transported to the bow for installation at a speed of about 1 m/min. Assemble at the stand.

As shown in Figure 2, the engine room 4, hub 5 and two blades 6 are installed on the deck of the wind turbine installation ship to form a "rabbit ear" type and moved to the lifting platform of the installation frame.

As shown in Figure 3 to Figure 12, it is a schematic diagram of the fan installation process.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the present invention can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the present invention shall fall within the scope of the claims of the present invention.

Claims (6)

1. A construction method for an offshore wind turbine installation ship, the offshore wind turbine installation ship includes a crane and legs, the installation ship also includes a translation system and a mounting frame system, the translation system is arranged at the longitudinal axis of the hull, It is used to translate the tower and the engine room; the installation frame system includes installation frames installed on the left and right sides of the bow and a lifting device, and the lifting device is used to vertically lift the complete wind turbine. It is characterized in that the offshore wind turbine installation ship During construction, the following steps are included: a. The wind turbine installation ship carries several sets of wind turbine equipment including the tower, engine room, hub and blades to the installation site of the offshore wind turbine. The position of the tower erected by the mounting frame on the ship is aligned with the wind turbine foundation, and the legs of the installation ship are lifted , so that the hull out of the water; b. Install the engine room, hub and two blades on the deck of the wind turbine installation ship, form a "rabbit ear" style and move them to the lifting platform of the installation frame system; c. Raise the nacelle so that its height is slightly higher than that of the section 1 tower; d. Move the section 1 tower from the ship and fix it on the mounting frame; e, move down the "rabbit ears" type nacelle and connect with the first section of the tower; f. Adjust the direction of the hub and install the third blade; g. Uplift the first section of the tower and the nacelle, and then move the second section of the tower and the third section of the tower for docking installation; h, move down the assembled fan, dock the tower with the fan foundation, and complete the installation. 2. The construction method of an offshore wind turbine installation ship according to claim 1, wherein the translation system of the offshore wind turbine installation ship includes a translation track and a translation trolley, and the trolley is equipped with an electric drive system and an operating platform. 3. The construction method of the offshore wind turbine installation ship according to claim 1 or 2, characterized in that, the installation frame system of the offshore wind turbine installation ship also includes a holding platform for holding and lifting the wind turbine tower . 4. The construction method of the offshore wind turbine installation ship according to claim 3, characterized in that, the installation frame system of the offshore wind turbine installation ship further includes a centralizing device for encircling and protecting the wind turbine tower. 5 . The construction method of an offshore wind turbine installation ship according to claim 4 , wherein the contact between the centralizing device and the wind turbine tower adopts rollers. 6 . 6. The construction method of an offshore wind turbine installation ship according to claim 3, characterized in that 8 guiding and positioning wheels are arranged around the holding platform to prevent the platform from moving along the ship's length and ship's width.

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