CN218771067U

CN218771067U - Open-hole type J-shaped pipe for offshore wind power

Info

Publication number: CN218771067U
Application number: CN202222948905.4U
Authority: CN
Inventors: 岳浩; 崔戎舰; 李健; 但京民; 吴高波; 吴庆华; 罗楚军; 王明阳; 柏晓路; 刘文勋; 张瑚; 廖星
Original assignee: China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Current assignee: China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-28
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses an offshore wind power is with trompil formula J type pipe relates to power system transmission of electricity technical field. The device comprises a J-shaped pipe, wherein three perforated layers are arranged on the J-shaped pipe in parallel at intervals; each layer of opening layer comprises six openings positioned on the outer wall of the J-shaped pipe; the six openings are evenly distributed. The utility model discloses take the mode in J type outer pipe wall trompil, realize that the inside and outside air of J type pipe effectively flows, the science in hole is arranged and has been guaranteed always can windy from a side hole flow to the J type intraductal portion, helps the heat dissipation of air section submarine cable. The utility model discloses make J-shaped pipe section cooling effect show, the current-carrying capacity of submarine cable has the promotion that is showing.

Description

Open-hole type J-shaped pipe for offshore wind power

Technical Field

The utility model relates to an electric power system transmission of electricity technical field, it is a trompil formula J type pipe for offshore wind power that says so more specifically.

Background

The coastline of China is long, offshore wind power resources are abundant, offshore wind power projects are vigorously developed, and the method has positive promotion effects on carbon peak reaching and carbon neutralization in China. As a transmission channel of electric energy, the submarine cable is one of important equipment of an offshore wind farm, and the safety and reliability of the submarine cable are important for the safe operation of the offshore wind farm.

The laying environment of the submarine cable can be generally divided into four sections, namely a J-shaped pipe section, a seabed section, an intertidal zone section and a land section; compared with other sections, the J-shaped pipe section environment of the offshore platform has a larger difference, a closed space is formed between the sea level of the J-shaped pipe and the platform, heat exchange between the submarine cable and the outside air is blocked by the J-shaped pipe, so that the cable core is easy to generate over-temperature, the current carrying capacity of the J-shaped pipe section is greatly limited, and the J-shaped pipe section environment becomes a bottleneck for transmitting the submarine cable.

At present, a submarine cable enters an offshore booster station or an offshore converter station from a seabed through a J-shaped pipe, which is the most common method for a submarine cable landing platform. However, no effective solution is available for the problem of limited current carrying capacity of J-shaped pipe section submarine cables, and the problem is in a blank state of research.

Therefore, it is necessary to develop an open hole type J-shaped pipe for offshore wind power for improving the current-carrying capacity of a submarine cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point of above-mentioned background art, and provide a trompil formula J type pipe for offshore wind power.

In order to realize the purpose, the technical scheme of the utility model is that: an open-cell J-shaped pipe for offshore wind power is characterized in that: the offshore converter station open hole structure comprises J-shaped pipes, the upper ends of the J-shaped pipes are connected with a deck of an offshore booster station or an offshore converter station, the lower ends of the J-shaped pipes extend into the sea level, and three layers of open hole layers are arranged on the J-shaped pipes between the deck of the offshore booster station or the offshore converter station and the sea level at intervals in parallel; each layer of the open pore layer comprises six open pores positioned on the outer wall of the J-shaped pipe; six trompils evenly distributed.

In the technical scheme, the marine converter station air conditioner further comprises a plugging plate, the upper end of the J-shaped pipe penetrates through a deck of the marine booster station or the marine converter station and then is connected with the plugging plate, a cable hole is formed in the center of the plugging plate, and six ventilation holes are uniformly distributed in the plugging plate.

In the technical scheme, the distance between the perforated layers of each layer is 3.75 meters, and the distance between the perforated layers above the sea level and the sea level is 3.75 meters.

In the above technical solution, the diameter of the opening is 10 cm; the diameter of the vent hole is 10 cm, and the distance between the center of the vent hole and the outer wall of the J-shaped pipe is 10 cm.

In the technical scheme, the J-shaped pipe comprises a straight pipe section above sea level and a bent pipe section below sea level, and the diameter of an opening at the bottom of the bent pipe section is gradually increased.

In the above technical scheme, an included angle between the center of the adjacent opening and the axis connecting line of the J-shaped pipe is 60 degrees, and an included angle between the center of the adjacent ventilation hole and the axis connecting line of the J-shaped pipe is 60 degrees.

Compared with the prior art, the utility model has the advantages of it is following:

1) The utility model discloses take the mode in J type outer pipe wall trompil, realize that the inside and outside air of J type pipe effectively flows, the science in hole is arranged and has been guaranteed always can windy from a side hole flow to the J type intraductal portion, helps the heat dissipation of air section submarine cable. The utility model discloses make J-shaped pipe section cooling effect show, the current-carrying capacity of submarine cable has the promotion that is showing.

2) The utility model discloses take the mode in J type nose portion shutoff board trompil, realize that the inside and outside air of J type pipe effectively flows, the scientific arrangement in hole has guaranteed that the hot-air of J type intraduct can effectively flow from the top, helps the heat dissipation of air section submarine cable. The utility model discloses make J type pipe section cooling effect show, the current-carrying capacity of submarine cable has the promotion that is showing.

Drawings

FIG. 1 is a schematic view of the structure of a J-tube and an open-hole layer.

Fig. 2 is a schematic structural view of a J-tube and a plugging plate.

Fig. 3 is a schematic structural view of the open pore layer.

Fig. 4 is a schematic structural view of the plugging plate.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily appreciated by the description.

With reference to the accompanying drawings: an open-cell J-shaped pipe for offshore wind power is characterized in that: the device comprises J-shaped pipes 3, the upper ends of which are connected with a deck 1 of the offshore booster station or the offshore converter station, and the lower ends of which extend into the sea level 2, wherein three perforated layers 4 are arranged on the J-shaped pipes 3 between the deck 1 of the offshore booster station or the offshore converter station and the sea level 2 at intervals in parallel; each layer of the open pore layer 4 comprises six open pores 41 positioned on the outer wall of the J-shaped pipe 3; the six openings 41 are evenly distributed.

The offshore booster station and the offshore converter station are characterized by further comprising a plugging plate 5, the upper end of the J-shaped pipe 3 penetrates through a deck 1 of the offshore booster station or the offshore converter station and is connected with the plugging plate 5, a cable hole 51 is formed in the center of the plugging plate 5, and six ventilation holes 52 are uniformly distributed in the plugging plate 5.

The distance between each layer of the perforated layer 4 is 3.75 meters, and the distance between the sea level 2 and the perforated layer 4 above the sea level 2 is 3.75 meters. In practical engineering, the total length of the J-tube 3 may be slightly different, but it is sufficient to ensure that the vertical distance between the lowest layer of the perforated layer 4 and the sea level 2 and the vertical distance between each layer of the perforated layer 4 are 3.75 meters.

The diameter of the opening 41 is 10 cm; the diameter of the vent hole 52 is 10 cm, and the distance between the center of the vent hole 52 and the outer wall of the J-shaped pipe 3 is 10 cm.

The J-shaped pipe 3 comprises a straight pipe section 31 positioned above the sea level 2 and a bent pipe section 32 positioned below the sea level 2, and the diameter of the bottom opening of the bent pipe section 32 is gradually increased.

The included angle between the center of the adjacent opening 41 and the axis connecting line of the J-shaped pipe 3 is 60 degrees, and the included angle between the center of the adjacent vent hole 52 and the axis connecting line of the J-shaped pipe 3 is 60 degrees.

In practice, the pipe bend 32 is typically in direct contact with the seabed. The submarine cable enters the J-shaped pipe 3 through the opening at the bottom of the elbow section 32 and then is laid on the deck at the top, and transitional laying from the offshore booster station or offshore converter station deck 1 is achieved.

Other parts not described belong to the prior art.

Claims

1. An open-cell J-shaped pipe for offshore wind power is characterized in that: the device comprises J-shaped pipes (3) of which the upper ends are connected with a deck (1) of an offshore booster station or an offshore converter station and the lower ends extend into a sea level (2), wherein three perforated layers (4) are arranged on the J-shaped pipes (3) between the deck (1) of the offshore booster station or the offshore converter station and the sea level (2) at intervals in parallel; each layer of the open pore layer (4) comprises six open pores (41) positioned on the outer wall of the J-shaped pipe (3); the six openings (41) are uniformly distributed.

2. An open-cell J-tube for offshore wind power according to claim 1, characterised in that: the marine booster station and converter station cable plugging device is characterized by further comprising a plugging plate (5), wherein the upper end of the J-shaped pipe (3) penetrates through a deck (1) of the marine booster station or the marine converter station and is connected with the plugging plate (5), a cable hole (51) is formed in the center of the plugging plate (5), and six ventilation holes (52) are uniformly distributed in the plugging plate (5).

3. The open-cell J-tube for offshore wind power of claim 2, characterized in that: the distance between each layer of the perforated layer (4) is 3.75 meters, and the distance between the sea level (2) and the perforated layer (4) above the sea level (2) is 3.75 meters.

4. An open-cell J-tube for offshore wind power according to claim 3, characterised in that: the diameter of the opening (41) is 10 cm; the diameter of the vent hole (52) is 10 cm, and the distance between the center of the vent hole (52) and the outer wall of the J-shaped pipe (3) is 10 cm.

5. An open-cell J-tube for offshore wind power according to claim 4, characterized in that: the J-shaped pipe (3) comprises a straight pipe section (31) located above the sea level (2) and a bent pipe section (32) located below the sea level (2), and the diameter of an opening at the bottom of the bent pipe section (32) is gradually increased.

6. The open-cell J-tube for offshore wind power of claim 5, characterized in that: the included angle between the center of the adjacent opening hole (41) and the axis connecting line of the J-shaped pipe (3) is 60 degrees, and the included angle between the center of the adjacent ventilation hole (52) and the axis connecting line of the J-shaped pipe (3) is 60 degrees.