CN216487460U

CN216487460U - Wind power gear box hollow pipe and cable device thereof

Info

Publication number: CN216487460U
Application number: CN202122639758.8U
Authority: CN
Inventors: 项峰; 张伟; 张大鹏; 许国东; 王杭烽
Original assignee: Zhejiang Windey Co Ltd
Current assignee: Zhejiang Windey Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-10
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a hollow tube of a wind power gear box and a cable device thereof, which solve the problems that cables in the hollow tube of the wind power gear box in the prior art are too many, the heat dissipation is not good, the cables are too few, the current-carrying capacity is small, and the cables and the hollow tube cannot be obtained at the same time. High current carrying capacity and good heat dissipation.

Description

Wind power gear box hollow pipe and cable device thereof

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a wind power gear box hollow pipe and a cable device thereof.

Background

The cable is an important carrier of power transmission, and the capability of actually carrying current becomes an important operation performance of the cable. The multi-core cable can save channels required by electric energy transmission, can meet the current requirements of electric equipment with different powers at the same time, and becomes the optimal choice for some special power supply places. However, since the multi-core cable has conductors with different cross sections and different current capacities, how to determine the current-carrying capacity of each cross-section conductor in the multi-core cable becomes the key for long-term stable operation of the multi-core cable.

At present, the wind power industry does not have the standard for designing hollow pipes of wind power gear boxes and cables inside the hollow pipes, particularly the inner diameter and the outer diameter of the hollow pipes. The cables in the hollow tube of the wind power gear box are too many, so that the heat dissipation is not good; the cable is too little and the current-carrying capacity is small. How to make the heat dissipation of the cable inside the hollow tube and the current-carrying capacity take into account is the current research direction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that cables in a hollow tube of a wind power gear box are too many and poor in heat dissipation or too few in cables and small in current-carrying capacity and cannot be used for both the heat dissipation and the current-carrying capacity in the prior art, and provides the hollow tube of the wind power gear box and a cable device thereof.

In order to achieve the purpose, the utility model adopts the following technical scheme: including installing at wind-powered electricity generation gear box and installing hollow tube and the planet carrier inside the wind-powered electricity generation gear box, the hollow tube passes through flange mounting on the planet carrier, be equipped with a plurality of cables in the hollow tube, the cable includes single core cable and multicore cable, the multicore cable includes first multicore cable and second multicore cable, the cable frame that is used for support, fixed cable is still installed to the hollow tube inside, be equipped with the patchhole that the power supply cable passed on the cable frame. The three cable racks are respectively arranged at the head, the middle and the tail of the hollow pipe and used for supporting and fixing the cables. The structure of other parts of the wind power gear box is the same as that of the common wind power gear box in the prior art; the single-core cables are different in sectional area. The cable rack is provided with a plurality of insertion holes for cables to pass through, the insertion holes are different in size, and the cables pass through the appropriate insertion holes. Be equipped with the cable frame, can guarantee on the one hand that the cable is difficult to take place the skew whipping in hollow tube inside, can leave less space around the cable on the one hand, the heat dissipation is better.

Preferably, the outer surface of the cable and the inner wall of the hollow pipe are both provided with a heat dissipation coating layer. So that the cable can dissipate heat better.

Preferably, the first multi-core cable comprises a first conductor wire core and a second conductor wire core, wherein the first conductor wire core is externally extruded with an insulating layer to form a first insulating wire core, the second conductor wire core is externally extruded with an insulating layer to form a second insulating wire core, the first insulating wire core and the second insulating wire core form a first conductor unit, the first conductor unit is externally coated with a cable to form a flame-retardant wrapping tape, and the flame-retardant wrapping tape is externally extruded with an insulating sheath. The flame-retardant wrapping tape can prevent flame from damaging the inner structure of the cable core,

preferably, the second multi-core cable comprises a second conductor wire core and a third conductor wire core, an insulating layer is extruded outside the second conductor wire core to form a second insulating wire core, an insulating layer is extruded outside the third conductor wire core to form a third insulating wire core, a second conductor unit is formed by the second insulating wire core and the third insulating wire core, a cable is wrapped around a flame-retardant wrapping tape outside the second conductor unit, and an insulating sheath is extruded outside the flame-retardant wrapping tape.

Preferably, the gap in the flame-retardant wrapping tape is also provided with a filler. The filler has an insulating effect on one hand and has heat dissipation and flame retardant effects on the other hand. The filler is arranged at the gap, so that no air is generated, the roundness of the wire core is ensured, and the flame retardant capability of the wire core is improved.

Preferably, the inner diameter of the hollow pipe is 70 mm. The space between the cables is not too large due to the hollow tube of 70mm, the cables are not easy to loosen and deflect, and meanwhile, the space between the cables is not too small, so that the cables cannot be plugged or heat dissipation is not feasible.

Preferably, the cross-sectional area of the core of the first conductor is 34-36mm²A second conductor lineThe cross-sectional area of the core is 15-17mm²The sectional area of the third conductor wire core is 9-11mm²The cross-sectional diameters of the first multi-core cable and the second multi-core cable are both 28-32 mm. The sectional area of the core of the first conductor wire is preferably 35mm²(ii) a The cross-sectional area of the second conductor is preferably 10mm²(ii) a The cross-sectional area of the third conductor is preferably 16mm²And the sectional area of the type can not only ensure the current-carrying capacity, but also ensure the outer diameter of the multi-core cable formed by the multi-core cable. The interface diameter of the multi-core cable is about 30mm, so that the multi-core cable can be placed in the hollow tube, and a plurality of single-core cables can be placed after the multi-core cable is placed.

Preferably, the filler is aramid fiber woven filler, and the insulating sheath is a silicon rubber sheath. The aramid fiber woven filler has good insulativity and corrosion resistance, light weight and high strength. And the outer diameter of the cable is smaller by adopting the silicon rubber sheath, and the cable can be arranged in the hollow tube.

Preferably, the first conductor unit comprises 3 groups of first insulated wire cores and one group of second insulated wire cores, and the first insulated wire cores are uniformly distributed around the outer circumference of the second insulated wire cores. When the cable is cabled, the cable roundness is better, and the gaps among the wire cores are smaller.

Preferably, the second conductor unit comprises 3 groups of second insulated wire cores and two groups of third insulated wire cores, and further comprises a filling rope, wherein the third insulated wire cores and the filling rope are distributed in gaps of the second insulated wire cores. According to the circular distribution of second insulation sinle silk, third insulation sinle silk, filling rope, third insulation sinle silk. When the cable is cabled, the cable roundness is better, and the gaps among the wire cores are smaller.

Therefore, the utility model has the following beneficial effects: starting with the conductor sectional area, the filler material and the sheath material which form the cable, the heat dissipation and the current-carrying capacity of the cable device in the hollow pipe are taken into consideration, so that the heat dissipation performance of the cable device in the hollow pipe of the wind power gear box is guaranteed, and the current-carrying capacity of the cable device is also guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the interior of a hollow tube of the present invention;

in the figure: 1. a planet carrier; 2. a flange; 3. a cable rack; 4. a hollow tube; 5. a single core cable; 6. a first multi-core cable; 7. a second multi-core cable; 8. a first conductor core; 9. a second conductor core; 10. a first conductor unit; 11. flame-retardant wrapping tape; 12. an insulating sheath; 13. a third conductor core; 14. a second conductor unit; 15. and (6) filling the ropes.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

the embodiment is a wind power gear box hollow tube and a cable device thereof, and as shown in fig. 1, the structure of the wind power gear box hollow tube comprises a wind power gear box, a hollow tube 4 and a planet carrier 1, wherein the hollow tube 4 and the planet carrier 1 are arranged inside the wind power gear box, and the hollow tube is arranged on the planet carrier through a flange 2. The inside of the hollow tube is also provided with three cable racks 3 which are respectively arranged at the head, the middle and the tail of the hollow tube and used for supporting and fixing cables. The cable rack is provided with a plurality of insertion holes for cables to pass through, the insertion holes are different in size, and the cables pass through the appropriate insertion holes. Be equipped with the cable frame, can guarantee on the one hand that the cable is difficult to take place the skew whipping in hollow tube inside, can leave less space around the cable on the one hand, the heat dissipation is better.

As shown in fig. 2, the interior of the hollow tube includes: the cable comprises a first multi-core cable 6 with the section diameter of 30mm, a second multi-core cable 7 with the section diameter of 30mm and a plurality of single-core cables 5 with different sizes. The first multi-core cable comprises a cross-sectional area of 35mm²And a first conductor core 8 and a cross-sectional area of 16mm²The first conductor wire core is externally extruded with an insulating layer to form a first insulating wire core 9, and three groups of first insulating wire cores are provided; and the second conductor wire core is externally extruded with an insulating layer to form a second insulating wire core, and the second insulating wire core is a group of second insulating wire cores. The three groups of first insulated wire cores are uniformly distributed around the outer circumference of the group of second insulated wire cores to form the first conductor unit 10, so that the cable has better roundness when being cabled,the voids between the cores are also smaller. The first conductor unit 10 is wrapped with a cable-wrapped flame-retardant wrapping tape 11, and the flame-retardant wrapping tape 11 is wrapped with an insulating sheath 12 in an extruding manner.

The second multi-core cable comprises a cross-sectional area of 16mm²And the second conductor wire core and the cross section area are 10mm²The third conductor wire core 13, the insulating layer is extruded outside the second conductor wire core to form second insulating wire cores, three groups of second insulating wire cores are total, the insulating layer is extruded outside the third conductor wire core to form third insulating wire cores, and two groups of insulating wire cores are total. The second multicore cable still includes a set of packing rope, three insulating sinle silks of group second, two sets of third insulating sinle silks and a set of packing rope with: second conductor unit 14 is constituteed in the circular distribution of second insulation sinle silk, third insulation sinle silk, filling rope, third insulation sinle silk, and cable is when the stranding like this, and the cable roundness is better, and the space between the sinle silk is also littleer. And a cable wrapping flame-retardant wrapping tape is wrapped outside the second conductor unit, and an insulating sheath is extruded outside the flame-retardant wrapping tape.

And fillers are arranged in gaps inside the first conductor unit and the second conductor unit, and the insulating sheaths are silicon rubber sheaths. And the outer diameter of the cable is smaller by adopting the silicon rubber sheath, and the cable can be arranged in the hollow tube. The interface diameter of the multi-core cable is about 30mm, so that the multi-core cable can be placed in a hollow tube with the inner diameter of 70mm, and a plurality of single-core cables can be placed after the multi-core cable is placed. The utility model starts from the conductor section area, the filler material and the sheath material which form the cable, and takes the heat dissipation and the current-carrying capacity of the cable device in the hollow pipe into consideration, thereby not only ensuring the heat dissipation performance of the cable device in the hollow pipe of the wind power gear box, but also ensuring the current-carrying capacity of the cable device.

The above-described embodiment is a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a wind-powered electricity generation gear box hollow tube and cable device thereof, its characterized in that, is including installing at the wind-powered electricity generation gear box and installing hollow tube (4) and planet carrier (1) inside the wind-powered electricity generation gear box, hollow tube (4) are installed on planet carrier (1) through flange (2), be equipped with a plurality of cables in hollow tube (4), the cable includes single core cable (5) and multicore cable, the multicore cable includes first multicore cable (6) and second multicore cable (7), inside cable frame (3) that are used for support, fixed cable of still installing of hollow tube (4), be equipped with the patchhole that a plurality of power supply cable passed on cable frame (3).

2. The wind power gear box hollow tube and the cable device thereof as claimed in claim 1, wherein the cable outer surface and the hollow tube inner wall are provided with heat-dissipating coating layers.

3. The wind power gear box hollow tube and the cable device thereof as claimed in claim 1, wherein the first multi-core cable (6) comprises a first conductor wire core (8) and a second conductor wire core (9), the first conductor wire core (8) is wrapped with an insulating layer to form a first insulating wire core, the second conductor wire core (9) is wrapped with an insulating layer to form a second insulating wire core, the first insulating wire core and the second insulating wire core form a first conductor unit (10), the first conductor unit (10) is wrapped with a cable wrapping flame-retardant wrapping tape (11), and the flame-retardant wrapping tape (11) is wrapped with an insulating sheath (12).

4. The wind power gear box hollow tube and the cable device thereof as claimed in claim 3, wherein the second multi-core cable (7) comprises a second conductor wire core (9) and a third conductor wire core (13), the second conductor wire core (9) is extruded with an insulating layer to form a second insulating wire core, the third conductor wire core is extruded with an insulating layer to form a third insulating wire core, the second insulating wire core and the third insulating wire core form a second conductor unit (14), the second conductor unit is externally wrapped with a cable wrapping flame-retardant wrapping tape, and the flame-retardant wrapping tape is extruded with an insulating sheath.

5. The wind power gear box hollow tube and the cable device thereof as claimed in claim 3 or 4, wherein the gap inside the fire-retardant wrapping tape is filled with filler.

6. The wind power gearbox hollow tube and cable device thereof as claimed in claim 1, wherein the inner diameter of the hollow tube is 70 mm.

7. The wind power gear box hollow tube and the cable device thereof as claimed in claim 4, wherein the cross-sectional area of the first conductor wire core (8) is 34-36mm²The cross section area of the second conductor wire core (9) is 15-17mm²The sectional area of the third conductor wire core (13) is 9-11mm²The cross-sectional diameters of the first multi-core cable (6) and the second multi-core cable (7) are both 28-32 mm.

8. The wind power gearbox hollow tube and cable device thereof as claimed in claim 5, wherein the filler is aramid woven filler, and the insulating sheath is a silicone rubber sheath.

9. The wind power gear box hollow tube and the cable device thereof as claimed in claim 3, wherein the first conductor unit comprises 3 groups of first insulated wire cores and one group of second insulated wire cores, and the first insulated wire cores are evenly distributed around the outer circumference of the second insulated wire cores.

10. The wind power gear box hollow tube and the cable device thereof as claimed in claim 4, wherein the second conductor unit comprises 3 groups of second insulated wire cores and two groups of third insulated wire cores, and further comprises a filling rope (15), and the third insulated wire cores and the filling rope are distributed in the gaps of the second insulated wire cores.