CN103337825A - A submarine cable protection sleeve for offshore wind power generators - Google Patents

Abstract

The invention discloses a submarine cable protective sleeve for an offshore wind driven generator, wherein a submarine cable penetrates through a first sleeve, a second sleeve and a third sleeve which are sequentially connected, the first sleeve is fixedly connected with a wind driven generator support frame through a rigid pipe, the second sleeve is a flexible pipe, the outer surface of the second sleeve is in a corrugated shape, and when the submarine cable is flushed by seawater, the flexible second sleeve can be elastically bent, so that the damage of the submarine cable due to excessive bending can be avoided, and the influence of vortex street vibration generated by the seawater on the submarine cable can be reduced.

Description

A submarine cable protection sleeve for offshore wind power generators

【Technical field】

The invention relates to offshore wind power generation equipment, in particular to a submarine cable protection casing for an offshore wind power generator.

【Background technique】

With the development of offshore wind power generation, the external submarine cables connected to wind turbines in European and domestic offshore wind farms have experienced problems such as wear and excessive bending to varying degrees. How to protect the external submarine cables of offshore wind turbines has received more and more attention. The submarine cable of the traditional offshore wind turbine is connected to the wind turbine through the J-tube. Due to the vortex vibration effect caused by seawater washing on the submarine cable, there will be constant contact and friction between the submarine cable and the J-tube, and the submarine cable will wear out after a period of time; Scour pits occur, which can cause the cable to hang in the air, causing excessive bending and damage to the cable.

The present invention aims at the deficiencies of the prior art and proposes a submarine cable protective casing for offshore wind power generators.

【Content of invention】

The present invention proposes a submarine cable protection casing for offshore wind power generators. The submarine cable passes through the first casing, the second casing and the third casing connected in sequence. The first casing adopts a rigid tube and a wind force The support frame of the generator is fixedly connected, and the second casing is a flexible pipe, which can be bent according to the seabed conditions, so that the transition of the submarine cable from the wind turbine to the seabed is smooth, and excessive bending is prevented. The submarine cable is protected against bending, and the outer surface of the second sleeve is in the shape of ring folds, which can prevent the submarine cable from being damaged due to excessive bending, ensure that the submarine cable does not undergo excessive bending when it is suspended in the air, and reduce the impact of vortex vibration generated by seawater on the seawater. influence of the cable.

In order to solve the above-mentioned technical problems, the present invention adopts a submarine cable protection casing for offshore wind power generators, and adopts the following technical scheme:

The present invention is a submarine cable protection sleeve used for offshore wind power generators, comprising a first sleeve fixedly connected to the support frame of the wind power generator, the lower end of the first sleeve is connected with a second sleeve, and the first sleeve is connected with the second sleeve. The other free end of the two sleeves is connected with a third sleeve, the first sleeve is a rigid tube, the second sleeve is a flexible tube, and the outer surface of the second sleeve is in the shape of ring folds, which can avoid the sea cable Damaged due to excessive bending, while reducing the impact of vortex street vibration generated by seawater on the submarine cable, the first sleeve is made of metal material, and the third sleeve is a rigid tube or a flexible tube.

The second sleeve is a corrugated metal hose.

The second sleeve can also be an elastic tube made of rubber and an elastic steel ring.

The second sleeve can also be an elastic tube made of polyurethane.

The present invention is a submarine cable protection sleeve used for offshore wind power generators. The submarine cable passes through the first sleeve, the second sleeve and the third sleeve connected in sequence, and the first sleeve adopts a rigid pipe and a wind power generator. The support frame is fixedly connected, and the second sleeve adopts a flexible tube. The outer surface of the second sleeve is in the shape of ring folds, which can avoid damage to the submarine cable due to excessive bending, and at the same time reduce the impact of vortex street vibration generated by seawater on the submarine cable.

【Description of drawings】

The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is a schematic diagram of a submarine cable protection casing for an offshore wind power generator.

Fig. 2 is a schematic diagram of the use of the submarine cable protection casing in the supporting frame of the offshore wind power generator.

【Detailed ways】

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The present invention is a submarine cable protection sleeve for offshore wind power generators, comprising a first sleeve 1 fixedly connected to a support frame 4 of a wind power generator, and a second sleeve 2 connected to the lower end of the first sleeve 1 , the other free end of the second sleeve 2 is connected with a third sleeve 3, the first sleeve 1 is a rigid tube, and the second sleeve 2 is a flexible tube. The submarine cable passes through the first sleeve 1, the second sleeve 2 and the third sleeve 3 in sequence. The first sleeve 1 adopts a rigid tube to facilitate fixed connection; the second sleeve 2 adopts a flexible tube, and the second sleeve 2 The outer surface is in the shape of circular folds, which can produce elastic bending when the sea water washes away, so as to avoid damage to the inner submarine cable due to excessive bending.

The first casing 1 is fixedly connected to the support frame 4 of the wind power generator through a flange 11 , the first casing 1 is made of metal material, and the third casing 3 is a rigid pipe or a flexible pipe.

In the present invention, the second sleeve 2 can be a corrugated metal hose, which has good elasticity, and has the characteristics of pressure resistance and corrosion resistance.

The second sleeve 2 of the present invention can also be an elastic tube made of rubber and an elastic steel ring, or an elastic tube made of polyurethane.

Claims (5)

1. extra large cable protection sleeve pipe that is used for offshore wind generating; it is characterized in that comprising first sleeve pipe (1) that is fixedly connected on the wind-driven generator bracing frame (4); described first sleeve pipe (1) lower end is connected with second sleeve pipe (2); another free end of described second sleeve pipe (2) is connected with the 3rd sleeve pipe (3); described first sleeve pipe (1) is rigid pipe; described second sleeve pipe (2) is flexible pipe, and described second sleeve pipe (2) appearance is accordion ringwise.

2. by the described a kind of extra large cable protection sleeve pipe for offshore wind generating of claim 1; it is characterized in that described first sleeve pipe (1) fixedlys connected by flange (11) with wind-driven generator bracing frame (4); described first sleeve pipe (1) adopts metal material to make described the 3rd sleeve pipe (3) rigid pipe or flexible pipe.

3. by the described a kind of extra large cable protection sleeve pipe for offshore wind generating of claim 2, it is characterized in that described second sleeve pipe (2) is corrugated flexible metal tube.

4. by the described a kind of extra large cable protection sleeve pipe for offshore wind generating of claim 2, it is characterized in that the elastic tube of described second sleeve pipe (2) for adopting the combination of rubber and flexible steel ring to make.

5. by the described a kind of extra large cable protection sleeve pipe for offshore wind generating of claim 2, it is characterized in that the elastic tube of described second sleeve pipe (2) for adopting polyurethane to make.

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