CN211578435U - Fire-resistant high temperature resistant super soft silica gel wind energy cable - Google Patents
Fire-resistant high temperature resistant super soft silica gel wind energy cable Download PDFInfo
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- CN211578435U CN211578435U CN201921927118.3U CN201921927118U CN211578435U CN 211578435 U CN211578435 U CN 211578435U CN 201921927118 U CN201921927118 U CN 201921927118U CN 211578435 U CN211578435 U CN 211578435U
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Abstract
A fire-resistant high temperature resistant super soft silica gel wind energy cable comprises a central conductor, a fire-resistant mica tape layer, a silicon rubber insulating layer and a glass fiber braided layer; the central conductor is an annealing bare copper conductor or a tinned copper conductor which is designed in a multi-unit small-pitch structure and is crossed and normally stranded; the surface of the central conductor is tightly wrapped with a fire-resistant mica tape layer, the periphery of the fire-resistant mica tape layer is tightly wrapped with a silicon rubber insulating layer, and the periphery of the silicon rubber insulating layer is tightly woven with the glass fiber woven layer. The utility model discloses a conductor outer layer weaves the coating design around package mica tape and insulating outer glass fiber for the cable is acted on for a long time at the high temperature more than 350 ℃ or under 600 ℃ naked light flame short time ablation, and the fine effect that separates the fire that plays of conductor surface, and has carried out the secondary with fire resistant mica tape and kept apart, has guaranteed the stability and the persistence of cable signal and electric current at the inside transmission of conductor.
Description
Technical Field
The utility model relates to a wind-powered electricity generation cable technical field, concretely relates to fire-resistant high temperature resistant super soft silica gel wind energy cable.
Background
Wind energy is widely distributed, inexhaustible and inexhaustible green pollution-free clean energy and becomes the first choice energy for sustainable development of human society, but at present, in the traditional wind energy cable used in a generator, the insulation material of the wind energy cable mostly adopts 105 ℃ irradiation crosslinking halogen-free flame retardant ethylene propylene rubber or elastomer material, but in practical application, when the internal load of the generator runs, due to the heat effect of current, the load current passes through the wind energy cable, the conductor is heated, and due to the skin effect of charge, the eddy current loss and the insulation medium loss of steel armor, additional heat is generated, and then the temperature of the wind energy cable is increased. When the cable runs for a long time, the insulation aging is accelerated by the overhigh temperature, so that the insulation is broken down, and potential safety hazards are caused, and the conventional temperature-resistant grade material cannot meet the use requirement at present, so that a cable material with a higher temperature grade (such as 200 ℃) is required, and the application requirement of long-term high bending is required to be met.
At present, the problem that a cable is on fire after overload exists in the use process of a wire for a stator coil of a wind power generator, and the wire is one of main factors for preventing the popularization of new wind power generation. However, in the conventional cable, there is no dedicated cable that can adapt to the wire characteristics for the stator coil of the generator, and therefore the above-mentioned potential safety hazard still exists.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a fire-resistant high temperature resistant super gentle silica gel wind energy cable.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a fire-resistant high temperature resistant super soft silica gel wind energy cable comprises a central conductor, a fire-resistant mica tape layer, a silicon rubber insulating layer and a glass fiber braided layer;
the central conductor is an annealing bare copper conductor or a tinned copper conductor which is designed in a multi-unit small-pitch structure and is crossed and normally stranded;
the surface of the central conductor is tightly wrapped with the fire-resistant mica tape layer, the periphery of the fire-resistant mica tape layer is tightly wrapped with the silicon rubber insulating layer, and the periphery of the silicon rubber insulating layer is tightly woven with the glass fiber woven layer.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the fire-resistant mica tape layer has two layers, and the surface of the central conductor is alternately wrapped and coated by the two fire-resistant mica tape layers.
2. In the scheme, the glass fiber weaving layer comprises a glass fiber weaving layer, the glass fiber weaving layer is formed by weaving 0.1-0.14 mm of glass fiber yarns, the weaving density is 80-85%, and the weaving angle is 45 +/-5 degrees.
3. In the scheme, the outer surface of the glass fiber woven fabric layer is also provided with a liquid silicone rubber coating.
The utility model discloses a theory of operation and advantage as follows:
compared with the prior art, the utility model adopts the high temperature resistant materials such as the silicon rubber insulating layer, the fire-resistant mica tape and the glass fiber braided layer, so that the cable can meet the requirement of working at the high temperature of 200 ℃ for a long time, and has higher temperature resistance than the conventional 105 ℃ temperature resistant grade cable; the insulating outer diameter of the cable is reduced and the bending radius is reduced by the multi-unit small-pitch structural design of the oxygen-free superfine copper wires and the cross regular stranding process forming technology.
The design scheme of weaving and coating the mica tape on the outer layer of the conductor and the glass fiber on the outer layer of the insulation layer is adopted, so that the glass fiber on the surface of the conductor plays a role in isolating fire when the cable is acted at a high temperature of more than 350 ℃ for a long time or is ablated at a flame of open fire at 600 ℃ for about 15 seconds, the fire-resistant mica tape is used for secondary isolation, the stability and the continuity of transmission of signals and current of the cable in the conductor are ensured, and a plurality of technical requirements of product application are met.
To sum up, the utility model discloses can satisfy the requirement of working at 200 ℃ high temperature for a long time, improve fire resistance, temperature resistance, bending property and the operational safety nature of cable, satisfy a great deal of technical requirement that the product was used.
Drawings
Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.
In the above drawings: 1. a center conductor; 2. a layer of refractory mica tape; 3. a silicon rubber insulating layer; 4. the glass fiber braided layer.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): as shown in fig. 1, a fire-resistant high-temperature-resistant super-soft silica gel wind energy cable comprises a central conductor 1, a fire-resistant mica tape layer 2, a high-temperature-resistant silicon rubber insulating layer 3 and a glass fiber braided layer 4.
The central conductor 1 is an annealing bare copper conductor or a tinned copper conductor which is designed in a multi-unit small-pitch structure and is crossed and normally stranded.
The surface of the central conductor 1 is wrapped by the two layers of the fireproof mica tape layer 2 in a cross wrapping mode, so that the fireproof performance is improved more strictly. The periphery of the outer fire-resistant mica tape layer 2 is tightly wrapped with a high-temperature-resistant silicon rubber insulating layer 3, and the periphery of the silicon rubber insulating layer 3 is tightly woven with the glass fiber woven layer 4. The raw material of the high temperature resistant silicon rubber insulating layer 3 can be selected from common fire resistant, high temperature resistant and high temperature resistant silicon rubber insulating materials in the market.
Wherein, the fire-resistant mica tape layer 2 is a three-in-one mica double-sided reinforcement, and the performance parameters are as follows:
the tensile strength is not less than 100N/mm;
the dielectric strength is ≧ 25 MV/m;
electrical property at high temperature of 800 ℃ for 90 min;
the withstand voltage is 1KV for 1min without breakdown;
the insulation resistance is not less than 1.0M omega;
volume resistance ≧ 1.0 × 1010 Ω · m (under normal state);
the combustion performance accords with the GB/T19216-2003 fire resistance characteristic test.
The glass fiber braided layer 4 is formed by coating a liquid silicon rubber coating on the surface of a glass fiber braided layer; the glass fiber fabric layer is formed by weaving 0.1-0.14 mm of glass fiber yarns, the weaving density is 80-85%, and the weaving angle is 45 +/-5 degrees; the raw material of the liquid silicone rubber coating can be selected from the commonly used liquid silicone rubber coating material for cables in the market.
The utility model discloses an add double-deck fire-resistant mica tape layer 2, can reach that coefficient of expansion is little, dielectric strength is big, the resistivity is high and the even effect of dielectric constant, has good high temperature resistance and fire resistance simultaneously.
The utility model adopts the high temperature resistant materials such as the silicon rubber insulating layer, the fire-resistant mica tape and the glass fiber braided layer, so that the cable can meet the requirement of working at the high temperature of 200 ℃ for a long time, and has higher temperature resistance than the conventional 105 ℃ temperature-resistant grade cable; the insulating outer diameter of the cable is reduced and the bending radius is reduced by the multi-unit small-pitch structural design of the oxygen-free superfine copper wires and the cross regular stranding process forming technology.
The design scheme of weaving and coating the mica tape on the outer layer of the conductor and the glass fiber on the outer layer of the insulation layer is adopted, so that the glass fiber on the surface of the conductor plays a role in isolating fire when the cable is acted at a high temperature of more than 350 ℃ for a long time or is ablated at a flame of open fire at 600 ℃ for about 15 seconds, the fire-resistant mica tape is used for secondary isolation, the stability and the continuity of transmission of signals and current of the cable in the conductor are ensured, and a plurality of technical requirements of product application are met.
To sum up, the utility model discloses can satisfy the requirement of working at 200 ℃ high temperature for a long time, improve fire resistance, temperature resistance, bending property and the operational safety nature of cable, satisfy a great deal of technical requirement that the product was used.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. The utility model provides a fire-resistant high temperature resistant super soft silica gel wind energy cable which characterized in that:
comprises a central conductor, a fire-resistant mica tape layer, a silicon rubber insulating layer and a glass fiber braided layer;
the central conductor is an annealing bare copper conductor or a tinned copper conductor which is designed in a multi-unit small-pitch structure and is crossed and normally stranded;
the surface of the central conductor is tightly wrapped with the fire-resistant mica tape layer, the periphery of the fire-resistant mica tape layer is tightly wrapped with the silicon rubber insulating layer, and the periphery of the silicon rubber insulating layer is tightly woven with the glass fiber woven layer.
2. The cable of claim 1, wherein: the fireproof mica tape layer has two layers, and the surface of the central conductor is wrapped and coated in a cross wrapping mode through the two fireproof mica tape layers.
3. The cable of claim 1, wherein: the glass fiber braided layer comprises a glass fiber braided layer, the glass fiber braided layer is formed by braiding 0.1-0.14 mm of glass fiber yarns, the braiding density is 80-85%, and the braiding angle is 45 +/-5 degrees.
4. The cable of claim 3, wherein: the outer surface of the glass fiber woven fabric layer is also provided with a liquid silicone rubber coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927118.3U CN211578435U (en) | 2019-11-08 | 2019-11-08 | Fire-resistant high temperature resistant super soft silica gel wind energy cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927118.3U CN211578435U (en) | 2019-11-08 | 2019-11-08 | Fire-resistant high temperature resistant super soft silica gel wind energy cable |
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| CN211578435U true CN211578435U (en) | 2020-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093566A (en) * | 2021-10-15 | 2022-02-25 | 上海金友金弘智能电气股份有限公司 | Rated voltage 3000V shielding braid silicon rubber insulated cable |
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2019
- 2019-11-08 CN CN201921927118.3U patent/CN211578435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093566A (en) * | 2021-10-15 | 2022-02-25 | 上海金友金弘智能电气股份有限公司 | Rated voltage 3000V shielding braid silicon rubber insulated cable |
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