CN216250140U

CN216250140U - Composite insulating tube bus structure

Info

Publication number: CN216250140U
Application number: CN202123000704.3U
Authority: CN
Inventors: 黄儒涛; 梁超; 罗传政
Original assignee: Zunyi Changzheng Electric Power Polytron Technologies Inc
Current assignee: Zunyi Changzheng Electric Power Polytron Technologies Inc
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-04-08
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a composite insulating tube bus structure, which comprises a conductive tube, wherein a first insulating layer, a first pressure equalizing layer, a heat dissipation layer, a second insulating layer, a second pressure equalizing layer, an insulating heat shrink tube, a shielding layer, an insulating sheath layer and a high-voltage insulating sleeve are sequentially coated on the periphery of the conductive tube from inside to outside, the heat dissipation layer comprises an inner support ring, an outer support ring, heat dissipation fins and support bodies, the four support bodies are uniformly distributed between the inner support ring and the outer support ring, the heat dissipation fins are multiple, the heat dissipation fins are uniformly distributed between the inner support ring and the outer support ring, and a heat dissipation channel is formed between two adjacent heat dissipation fins. The bus structure has the advantages of good sealing property, shielding property and heat dissipation effect, simple structure, high insulation protection capability and safety and the like, is not easy to break and the like, improves the production efficiency and quality of the bus, and ensures that the electric field of the bus is more uniform, thereby prolonging the service life of the bus.

Description

Composite insulating tube bus structure

Technical Field

The utility model relates to the technical field of power transmission bus structures, in particular to a composite insulating tube bus structure.

Background

Along with the high-speed development of economy in China, the demand of the whole society on electric power is increasing day by day, because the low-voltage sides of 110kV and 220kV transformer substations adopt 10kV and 35kV voltage levels, along with the increase of main transformer capacity, the rated current of the low-voltage side wiring side of a transformer is also increasing continuously. The conventional rectangular bus is more and more difficult to meet the requirements of bus heating and short-circuit electrodynamic force technically and structurally, so that additional loss and increase of skin effect coefficient are caused, the reduction of current interception capability is caused, and the current distribution is uneven.

Compared with the traditional bus with a rectangular section, the tubular bus has the advantages of low skin effect and low power transmission loss, but has higher requirements on external insulation due to larger external dimension. The external insulation of the existing tubular bus is usually simply coated by an insulating strip material and an insulating sheath, the insulating capability of the existing tubular bus is poor, and the existing tubular bus cannot completely shield internal voltage, so that the phase safety of the existing tubular bus cannot meet higher insulation and protection requirements. Meanwhile, the existing tubular bus is generally manufactured in a winding mode, the structure is often poor in sealing performance, shielding performance and heat dissipation effect, the phenomenon of breakage easily occurs in the using process, or when the current in a circuit is large, high heat can be generated, and therefore the service life of the tubular bus is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems in the background art, and provides a bus structure which is simple in structure, strong in insulation protection capability and high in safety.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a compound insulating tube generating line structure, is including a circular shape conductive tube the peripheral from interior to exterior cladding in proper order of conductive tube has first insulating layer, first voltage-sharing layer, heat dissipation layer, second insulating layer, second voltage-sharing layer, insulating pyrocondensation pipe, shielding layer, insulating restrictive coating and high-voltage insulation support, the heat dissipation layer is including interior support ring, outer support ring, fin and supporter, the supporter sets up to four, and four supporter evenly distributed are in between interior support ring and the outer support ring, the fin sets up to a plurality ofly, and a plurality of fin evenly distributed are in between interior support ring and the outer support ring, be formed with heat dissipation channel between two adjacent fins.

Further, the composite insulating tube bus structure is characterized in that the first insulating layer, the second insulating layer and the insulating sheath layer are all made of polyolefin high-polymer insulating materials.

Further, the first voltage-sharing layer and the second voltage-sharing layer are both made of aluminum foil materials.

Furthermore, the composite insulating tube bus structure provided by the utility model is characterized in that the shielding layer is coated by a copper strip or a woven copper mesh.

Further, according to the composite insulating tube bus bar structure, the inner supporting ring, the outer supporting ring, the radiating fins and the supporting body in the radiating layer are all made of heat conducting materials with the same material into an integral structure.

Further, the composite insulating tube bus structure is characterized in that the insulating heat-shrinkable tube is made of a polytetrafluoroethylene insulating material, a layer of net-shaped aluminum foil material with the thickness of 0.01-0.02 mm is arranged in the insulating heat-shrinkable tube in a crossed mode, and the high-voltage insulating sleeve is made of a halogen-free low-smoke flame retardant material.

By adopting the composite insulating tube bus structure, as the heat dissipation layer is arranged between the first voltage-sharing layer and the second insulating layer and consists of the inner support ring, the outer support ring, the heat dissipation fins and the support body, the heat dissipation channel is formed between two adjacent heat dissipation fins, and the heat dissipation efficiency is favorably improved by utilizing the arranged heat dissipation fins and the formed heat dissipation channel; meanwhile, by utilizing the structure of the insulating heat-shrinkable tube and the high-voltage insulating sleeve and arranging a layer of net-shaped aluminum foil material in the insulating heat-shrinkable tube in a crossed manner, a partial winding manner is changed into a direct sleeving manner, so that the sealing property and the shielding property of the insulating heat-shrinkable tube can be improved; in addition, the double-layer voltage-sharing layer structure arranged at intervals is adopted, so that the potential of the inner conductor can be effectively controlled, the electric field can be limited, the electric field distribution is more uniform, and the problem of partial discharge on the insulating surface is avoided. The bus structure has the advantages of good sealing property, shielding property and heat dissipation effect, simple structure, high insulation protection capability and safety and the like, is not easy to break and the like, improves the production efficiency and quality of the bus, and ensures that the electric field of the bus is more uniform, thereby prolonging the service life of the bus and having strong practicability.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention.

Shown in the figure: the capacitor comprises a 1-conductive tube, a 2-first insulating layer, a 3-first voltage equalizing layer, a 4-heat dissipation layer, a 41-capacitor outer shell, a 42-end cover, a 43-terminal hole, a 44-capacitor inner shell, a 45-fixed seat, a 5-second insulating layer, a 6-second insulating layer, a 7-insulating heat-shrinkable tube, an 8-shielding layer, a 9-insulating sheath layer and a 10-high-voltage insulating sleeve.

Detailed Description

To further illustrate the concepts of the present invention, embodiments of the present invention will be described in further detail below with reference to the following drawings:

as shown in fig. 1, the composite insulating tube bus structure according to the present invention includes a circular conductive tube 1, a first insulating layer 2, a first voltage equalizing layer 3, a heat dissipation layer 4, a second insulating layer 5, a second voltage equalizing layer 6, an insulating heat shrinkable tube 7, a shielding layer 8, an insulating sheath layer 9, and a high voltage insulating sleeve 10 are sequentially coated on the periphery of the conductive tube 1 from inside to outside, the heat dissipation layer 4 includes an inner support ring 41, an outer support ring 42, four heat dissipation fins 43, and support bodies 44, the four support bodies 44 are uniformly distributed between the inner support ring 41 and the outer support ring 42, the number of the heat dissipation fins 43 is multiple, the number of the heat dissipation fins 43 is uniformly distributed between the inner support ring 41 and the outer support ring 42, and a heat dissipation channel 45 is formed between two adjacent heat dissipation fins 43; the first insulating layer 2, the second insulating layer 5 and the insulating sheath layer 9 are all made of polyolefin polymer insulating materials; the first pressure equalizing layer 3 and the second pressure equalizing layer 6 are both made of aluminum foil materials; the shielding layer 8 is coated by a copper strip or a woven copper mesh; the inner support ring 41, the outer support ring 42, the radiating fins 43 and the support body 44 in the radiating layer 4 are made of heat conducting materials with the same material to form an integral structure; the insulating heat-shrinkable tube 7 is made of a polytetrafluoroethylene insulating material, a layer of reticular aluminum foil material with the thickness of 0.01-0.02 mm is arranged in the insulating heat-shrinkable tube 7 in a crossed mode, and the high-voltage insulating sleeve 10 is made of a halogen-free low-smoke flame-retardant material.

By adopting the composite insulating tube bus structure, the first insulating layer 2, the first voltage-equalizing layer 3, the heat dissipation layer 4, the second insulating layer 5, the second voltage-equalizing layer 6, the insulating heat-shrinkable tube 7, the shielding layer 8, the insulating sheath layer 9 and the high-voltage insulating sleeve 10 are sequentially coated on the periphery of the conductive tube 1 from inside to outside, the heat dissipation layer 4 consists of an inner support ring 41, an outer support ring 42, heat dissipation fins 43 and a support body 44, a heat dissipation channel 45 is formed between two adjacent heat dissipation fins 43, and the arranged heat dissipation fins 43 and the formed heat dissipation channel 45 are utilized, so that the heat dissipation efficiency is improved; meanwhile, by utilizing the structures of the insulating heat-shrinkable tube 7 and the high-voltage insulating sleeve 10 and arranging a layer of net-shaped aluminum foil material in the insulating heat-shrinkable tube 7 in a crossed manner, a partial winding manner is changed into a direct sleeving manner, so that the sealing property and the shielding property of the insulating heat-shrinkable tube can be improved; in addition, the double-layer voltage-sharing layer structure arranged at intervals is adopted, so that the potential of the inner conductor can be effectively controlled, the electric field is limited, the electric field is uniformly distributed, and the problem of partial discharge on the insulating surface is avoided.

In conclusion, the bus structure has the advantages of good sealing performance, shielding performance and heat dissipation effect, simple structure, high insulation protection capacity and safety and the like, and is not easy to break, so that the production efficiency and quality of the bus are improved, the electric field of the bus is more uniform, the service life of the bus is prolonged, and the practicability is high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a compound insulating tube generating line structure, is including a circular shape contact tube (1), its characterized in that: the periphery of the conductive tube (1) is sequentially coated with a first insulating layer (2), a first voltage-equalizing layer (3), a heat-radiating layer (4), a second insulating layer (5), a second voltage-equalizing layer (6), an insulating heat-shrinkable tube (7), a shielding layer (8), an insulating sheath layer (9) and a high-voltage insulating sleeve (10) from inside to outside, the heat dissipation layer (4) comprises an inner support ring (41), an outer support ring (42), a heat dissipation sheet (43) and a support body (44), the number of the supporting bodies (44) is four, the four supporting bodies (44) are uniformly distributed between the inner supporting ring (41) and the outer supporting ring (42), the number of the radiating fins (43) is multiple, the radiating fins (43) are uniformly distributed between the inner supporting ring (41) and the outer supporting ring (42), and a radiating channel (45) is formed between two adjacent radiating fins (43).

2. The composite insulated tubular busbar structure of claim 1, wherein: the first insulating layer (2), the second insulating layer (5) and the insulating sheath layer (9) are all made of polyolefin polymer insulating materials.

3. The composite insulated tubular busbar structure of claim 1, wherein: the first pressure equalizing layer (3) and the second pressure equalizing layer (6) are both made of aluminum foil materials.

4. The composite insulated tubular busbar structure of claim 1, wherein: the shielding layer (8) is coated by a copper strip or a woven copper mesh.

5. The composite insulated tubular busbar structure of claim 1, wherein: the inner support ring (41), the outer support ring (42), the radiating fins (43) and the support body (44) in the radiating layer (4) are all made of heat conducting materials with the same material into an integral structure.

6. The composite insulated tubular busbar structure of claim 1, wherein: the insulating heat-shrinkable tube (7) is made of a polytetrafluoroethylene insulating material, a layer of net-shaped aluminum foil material with the thickness of 0.01-0.02 mm is arranged in the insulating heat-shrinkable tube (7) in a crossed mode, and the high-voltage insulating sleeve (10) is made of a halogen-free low-smoke flame-retardant material.