JPH01208575A - Method and device for supporting cable of wind mill - Google Patents

Abstract

PURPOSE:To facilitate an assembling/disassembling operation by installing a cable support holding a cable on the upper portion of a supporting tower at the time of installing a wind-mill driving portion and lifting up same from the supporting tower after installing the wind-mill driving portion, to be fixed to the wind-mill driving portion side. CONSTITUTION:In order to install the turning bed 2 of a wind-mill driving portion on the upper portion of a supporting tower 1, first, the lower large- diameter portion 4a of a cable support 4 is installed on the upper fixing seat 3 of the supporting tower 1 while aligning the centers thereof. Next, a cable 9 is supported by the cable support 4 by means of a net 8. Then, the turning bed 2 is held by the upper fixing seat 3 with bolts via a bearing portion. A number of jacks 10 are placed between the turning bed 2 and the receiving portion 5 of the cable support 4 to lift up the cable support 4. After that, an installing bracket is linked to the upper portion 4b of the cable support 4 and installing seat pillars 7. Thereby, the cable support 4 is fixed to the turning bed 2, enabling same to be rotated together with the cable 9.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to wind turbine equipment in which a power transmission cable is suspended from the top of a wind turbine support tower to the ground, and in particular, a method for supporting the cable during disassembly or assembly of the wind turbine, and this method. The present invention relates to a cable support device suitable for carrying out.

(Prior Art) For example, in a wind turbine generator installed at a height of several tens of meters above the ground, the generated power is transmitted to the ground via a cable suspended within a wind turbine support tower. In a structure that does not use a slip ring, the rotation movement of the wind turbine drive unit including the generator at the top of the support tower around the center of the support tower is handled by twisting the suspended cable of several tens of meters. FIG. 7 is a schematic longitudinal sectional view of this type of wind turbine equipment. A rotating bed 2 is held at the upper end of a support tower 1 erected on the ground so that it can rotate within a range around a vertical axis via a bearing 14, and a generator 16 is installed on the rotating bed 2.
A wind turbine 17 is connected to the operating shaft of the wind turbine. As described above, the power transmission cable 9 of the generator 16 is guided to the ground through the inside of the support tower 1. The wind turbine drive unit 18 including the wind turbine 17, the generator 16, and the rotating bed 2 is attached to and removed from the support tower 1 with the generator 16 and the rotating bed 2 integrated during assembly and disassembly of wind turbine equipment.

Conventionally, when installing or removing the wind turbine drive section 18, the cable 9 is wound around the wind turbine drive section in advance, or the cable 9 is lowered to the ground first, and after the wind turbine drive section is installed, a crane or the like is used. hang the cable 9 using
(raised).

- (Problems to be solved by the invention) In this type of wind turbine equipment, the upper part of the support tower is often long and narrow and people cannot enter inside (in the conventional structure, the assembly and
During disassembly, there is no way to temporarily hold the cables at the top of the support tower, and the cables are either rolled up to the wind turbine drive section or removed and lowered to the ground, which requires a lot of labor and time for assembly and disassembly. However, there was a problem in that special lanes were required for lifting and suspending cables weighing several hundred kilograms.

The present invention allows suspension cables to be temporarily supported at the top of the support tower during assembly and disassembly without using any cranes, large winches, etc., and without affecting the cables on the ground side. Another object of the present invention is to provide a cable support method and a cable support device that allow cables to be easily connected after installation of a wind turbine drive unit.

(Means for Solving the Problems) The present invention provides a cable support method for wind turbine equipment in which a wind turbine drive unit is rotatably supported on the upper part of a support tower, in which the cable supporting the cable is The support is removed from the wind turbine drive unit and placed on the top of the support tower, and after the wind turbine drive unit is attached, the cable support is lifted with a jack from the top of the support tower and fixed to the wind turbine drive unit side. Moreover, it is designed to be separated from the support tower side.

(Example) Next, the invention will be explained by way of example with reference to the drawings.

FIG. 1 is a front sectional view of the upper part of a support tower of a wind turbine facility suitable for carrying out the cable support method of the present invention, and FIG. 2 is a sectional view taken along line BB in FIG. 1. A cylindrical upper fixed seat 3 is fixed near the upper end of the support tower 1, and a rotating bed 2 is installed on the upper surface of the fixed seat 3 via a bearing 14 so as to be able to rotate around the support tower axis 1a. . As shown, the bearing part 14 is mounted between the fixed seat 3 and the rotating bed 2 by means of bolts 11, and by removing the bolts 11, the rotating bed 2 can be removed from the fixed seat 3 and therefore the support tower 1. A plurality of, specifically three, cable support mounting posts 7 are fixed on the rotating bed 2 at positions slightly shifted to one side from the center of the support tower l (FIGS. 2 and 3), and A swing winch 15, a generator, and other structures necessary for wind turbine power generation are provided.

The three cable support mounting posts 7 are spaced apart from each other in the circumferential direction and assembled radially, into which the upper portion of the cable support 4, which will be described later, is inserted.

In this embodiment, the cable support 4 according to the present invention is formed in a cylindrical shape with a large diameter part 4a at the lower part, and is located between the upper fixed seat 3 and the rotating bed 2, and the large diameter part 4a is fixed to the upper part. It is arranged so as to be concentric with the seat 3 and the support tower 1. The upper part 4b of the cable support 4 is the lower large diameter part 4a.
It has a smaller diameter and is eccentric by e with respect to the larger diameter part (
Figure 3).

In order to facilitate concentric installation of the lower large-diameter portion 4a of the cable support 4, a protrusion 12 and a projection 13 are provided on the side of the large-diameter portion of the cable support 4, as clearly shown in FIG. As shown in the side sectional view of FIG. 3, a power transmission cable 9 is attached to the upper small diameter portion of the cable support 4 via a cable net 8 in advance. In addition, cable 9
is supported by a cable net 8 so as to protrude above the rotating bed by a length necessary for connection with a generator etc., and its lower end is suspended down to the ground through the hollow part of the support tower 1.

Three jack-up receivers 5 projecting outward are fixed to the upper end side of the cable support 4 so as to be exposed between the three cable support mounting posts 7 spaced apart, and are similarly fixed. Three mounting brackets 6 are connected to the upper outer part of the cable support 4 at positions corresponding to the cable support mounting posts 7 by bolts. The cable support 4 is bolted to the cable support mounting post 7 via the mounting bracket 6 during power generation, that is, during wind turbine operation. In this state, the lower surface of the cable support is upwardly separated from the upper fixed seat 3 of the support tower 1, and therefore the cable support 4 rotates together with the rotating bed 2 around the support tower central axis 1a, and the cable support 4 The suspended cable 9 also rotates in the same way.

When assembling or disassembling the rotating bed 2 on the support tower, remove the mounting bracket 6 and attach the cable support 4 to the support tower 1 using jacks 10 as described below.
is lowered onto the seating surface 3a of the upper fixed seat 3, thereby resting the cable 9 on the support tower 1 via the cable support 4, and then loosening the bolts 11 to install and remove the rotating bed 2.

Installation of the wind turbine drive on the support tower 1, i.e. the rotating bed 2
If I explain the installation procedure in more detail, first (a)
The lower large-diameter portion 4a of the cable support 4 is installed on the seat surface 3a of the upper fixed seat 3 of the support tower 1 with its center aligned. If the lower large diameter portion 4a of the cable support 4 is not located on the center of rotation, centering is performed using the protrusion 12 of the cable support 4 and the pair of positioning plates 13 on the upper fixing seat 3.

(b) Next, the cable 9 is supported on the 4-cable support 4 by the cable net 8. At this time, as described above, the length of the cable 9 necessary for connection and attachment is extended upward. (c) The rotating bed 2 is placed on top and held on the upper fixed seat 3 of the support tower 1 by bolts 11 via bearings 14. Three jacks 10 are interposed between the revolving bed 2 and the jack-up receiving portion 5 of the cable support 4, and a fifth
As shown in the figure, lift the cable support 4 by about 20 mm from the mounting surface 3a of the upper fixed seat 3. At this point the cable support 4 separates from the support tower 1. (d) In this state, attach the mounting bracket 6 to the upper part 4b of the cable support 4.
and connected to the cable support mounting post 7 with bolts. This allows the cable support 4 to pivot and be fixed to the bed 2, allowing it to pivot together with the cable 9.

The procedure for disassembling (removing) the rotating bed is performed in substantially the reverse order as described above.

(Effects of the Invention) As explained above, according to the present invention, the cable support that supports the cable is installed at the top of the support tower when installing and removing the wind turbine drive section, and after the wind turbine drive section is installed, the cable support that supports the cable is installed at the top of the support tower. Since the cable is fixed to the wind turbine drive part side, the cable can be held at the top of the support tower in advance, and the cable support can be easily lifted using only a small jack, without the need for a crane or lifting winch.
Assembly and disassembly work is extremely quick and easy. Work can be done without any connection to cables on the ground side, and the work becomes safer.

[Brief explanation of the drawing]

Figure 1 is a front sectional view of the upper part of the wind turbine support tower when implementing the cable support method of the present invention, and Figure 2 is B'-B in Figure 1.
3 is a side sectional view of FIG. 1, FIGS. 4 and 5 are enlarged sectional views of section A in FIG. 3, FIG. 4 is a sectional view when the jack is down, and FIG. FIG. 6 is a cross-sectional view taken along line C-C of the third crystal, and FIG. 7 is a schematic overall side cross-sectional view of the wind turbine power generation equipment. DESCRIPTION OF SYMBOLS 1... Support tower, 2... Swivel bed, 3... Upper fixed seat, 4... Cable support, 5... Jack up receiver, 6... Mounting bracket, 7... Cable support Mounting post, 8... Cable net, 9... Cable, 10...
・Jyatsuki. Sub-Agent Patent Attorney Toshiyoshi Somekawa Figure 1 Figure 2 Figure 6 Figure 7

Claims (2)

[Claims] (1) In a cable support method for a wind turbine facility in which a wind turbine drive section is rotatably supported on the upper part of a support tower, when the wind turbine drive section is attached or detached, the cable support that supports the cable is removed from the wind turbine drive section. The cable support is placed on the upper part of the support tower, and after the wind turbine drive unit is attached, the cable support is lifted with a jack to the upper part of the support tower, fixed to the wind turbine drive unit side, and separated from the support tower side. A cable support method characterized by: (2) a cable support that holds a cable and has a jack receiver formed on its side; a support tower upper fixing seat fixed to the top of the wind turbine support tower; and a cable support that is rotatably held on the upper fixing seat. a rotating bed; and a cable support mounting post fixed to the rotating bed and removably holding the cable support, the cable support being fixed to the mounting post and attached to the upper fixed seat A cable support device for a wind turbine, wherein the upper fixed seat has a seat surface on which a cable support removed from the mounting post is placed.