CN202523430U - High temperature resistant mineral insulated cable - Google Patents
High temperature resistant mineral insulated cable Download PDFInfo
- Publication number
- CN202523430U CN202523430U CN2012201725546U CN201220172554U CN202523430U CN 202523430 U CN202523430 U CN 202523430U CN 2012201725546 U CN2012201725546 U CN 2012201725546U CN 201220172554 U CN201220172554 U CN 201220172554U CN 202523430 U CN202523430 U CN 202523430U
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- cable
- sheath
- insulation layer
- magnesium oxide
- mineral insulated
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- Expired - Fee Related
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Abstract
The utility model discloses a high temperature resistant mineral insulated cable. The cable mainly comprises conductors, an insulation layer and a sheath from inside to outside; the sheath is a copper sheath; the insulation layer is a magnesium oxide insulation layer; and a corrosion prevention plastic sleeve is arranged on the outer surface of the sheath. A mineral insulation mode is adopted by the insulation layer, and the insulation layer is made of magnesium oxide, so that the cable has the fire resistance performance, cannot be combusted or trigger a fire source, can still work normally even under the fire condition, and is not needed to be replaced and can be continuously used only if the temperature of flame is lower than the temperature of the melting point of copper, and the fire is extinguished; the cable is strong in overload protection capacity, even if the magnesium oxide at a breakdown point is molten into magnesium oxide in the process of circuit load, and the cable can be used continuously and normally after overload is eliminated; and the cable is large in current-carrying capacity, and compared with plastic cables, the cable has the advantages that when the magnitude of the transmitted current is the same, one or more than one section grades can be reduced.
Description
Technical field
The utility model relates to a kind of cable that is used for, and specifically is a kind of mineral insulated cable.
Background technology
The domestic fireproof cable of claiming again of mineral insulated cable.The appearance of mineral insulated cable is the innovation to traditional cable. the effect of particularly in a little important places and crucial electric wiring, bringing into play. make plastic cable hope dirt establish and thereby industrial flourishing states such as Britain, Australia, Canada all begin to produce mineral insulated cable in succession, but mainly only be used for building industry and important industrial plants.And that China relates to is slower. until nineteen sixty-eight just begin by Shanghai Electrical Cable Research Institute to this product develop, since this product with the particularity of material and structure. make its have traditional organic insulation cable incomparable electric property, mechanical performance, environmental resistance and environmental-protecting performance, constantly to promote people increasingly high to safety requirements along with this product, mineral insulated cable is also more and more admitted by people. be widely used in basic industries and the civilian construction at present.
Summary of the invention
For overcoming above-mentioned deficiency, the purpose of the utility model is to provide the high temperature resistant mineral insulated cable that a kind of fire resistance is good, the overload protection ability is strong, ampacity is big.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
High temperature resistant mineral insulated cable, it mainly contains conductor, insulating barrier and sheath from inside to outside and constitutes said sheath employing copper sheath, said insulating barrier employing magnesia insulating barrier.
The outer surface of said sheath is provided with one deck anti-rot plastic cover.
Said conductor adopts copper conductor.
The beneficial effect of the utility model is: because insulating barrier adopts the form of mineral insulation, promptly adopt magnesia as insulating barrier, make this cable have following performance: 1, fire resistance: cable not only self can't burn; More can not cause burning things which may cause a fire disaster, even under the situation of catching fire, but cable operate as normal still; And as long as flame temperature is lower than the melting temperature of copper; After the condition of a fire was eliminated, cable need not to change, and still can continue to use; 2, the overload protection ability is strong: during circuit overload, plastic cable can to cause the insulation heating aging or puncture because of overcurrent or overvoltage, and for mineral insulated cable; As long as heating does not reach the melting temperature of copper, cable can be not impaired, even moment punctures; It still is magnesia that breakdown point place magnesia both just melts; After overload was eliminated, cable performance can not change, and still can continue normal use; 3, ampacity is big: because the particularity of cable insulation material and structure makes mineral insulated cable have bigger current capacity, transmit the identical magnitude of current, if select for use the comparable plastics class of mineral insulated cable cable to reduce 1 to 2 cross section grade or bigger.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further to specify.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, conductor; 2, insulating barrier; 3, sheath; 4, anti-rot plastic cover.
Embodiment
As shown in Figure 1, high temperature resistant mineral insulated cable, it mainly contains conductor 1, insulating barrier 2 and sheath 3 from inside to outside and constitutes said sheath 3 employing copper sheaths, said insulating barrier 2 employing magnesia insulating barriers.The outer surface of said sheath 3 is provided with one deck anti-rot plastic cover 4.Said conductor adopts copper conductor.
This practicality newly also has following characteristics:
1, working temperature is high: owing to the melting temperature of the magnesian melting temperature of insulating barrier far above copper, thereby the highest normal working temperature of bare cable can reach 250 ℃. and short-term can continue operation down for 1083 ℃ at the melting temperature near copper;
2, waterproof, anticorrosion. explosion-proof: because cable adopts seamless copper pipe to make sheath; Conductor, insulation and sheath three ask to be fine and close compacts thereby to make its infringement that not only has anti-sealing, moisture, oil and a little chemical substances, and has and stop spreading of flammable oil vapour, gas and flame.
3, shielding properties is superior: the cable copper sheath is best shielding protection layer, both can prevent the interference of cable to other cable itself, can stop the interference of external electromagnetic field to self again;
4, capability of resistance to radiation is strong: because the cable composition material is inorganic matter. thereby after standing to examine the spoke pair. the electric and mechanical performance of cable can not produce any variation;
5, long service life: because cable is made up of inorganic material. thereby can not wear out. its useful life is minimum to be reached more than hundreds of years
6, external diameter is little, and is in light weight: with compare with the ampacity plastic cable, the mineral insulated cable external diameter, weight will reduce a lot, not only can reduce to take up room. but also be convenient to install.
The above is the preferred implementation of the utility model, can not limit the interest field of the utility model certainly with this.Should be pointed out that for those skilled in the art, the technical scheme of the utility model is made amendment or is equal to replacement, do not break away from the protection range of the utility model.
Claims (3)
1. high temperature resistant mineral insulated cable, it mainly contains conductor, insulating barrier and sheath from inside to outside and constitutes, and said sheath adopts copper sheath, it is characterized in that: said insulating barrier adopts the magnesia insulating barrier.
2. high temperature resistant mineral insulated cable according to claim 1 is characterized in that: the outer surface of said sheath is provided with one deck anti-rot plastic cover.
3. high temperature resistant mineral insulated cable according to claim 1 is characterized in that: said conductor adopts copper conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201725546U CN202523430U (en) | 2012-04-20 | 2012-04-20 | High temperature resistant mineral insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201725546U CN202523430U (en) | 2012-04-20 | 2012-04-20 | High temperature resistant mineral insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523430U true CN202523430U (en) | 2012-11-07 |
Family
ID=47106368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201725546U Expired - Fee Related CN202523430U (en) | 2012-04-20 | 2012-04-20 | High temperature resistant mineral insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523430U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489519A (en) * | 2013-09-10 | 2014-01-01 | 江苏通鼎光电科技有限公司 | Railway digital signal cable with overall performance |
| CN104183325A (en) * | 2013-05-23 | 2014-12-03 | 河南科信电缆有限公司 | Mineral insulated fireproof carbon fiber cable |
| CN115295228A (en) * | 2022-08-22 | 2022-11-04 | 特变电工山东鲁能泰山电缆有限公司 | 1kV rigid mineral insulation fireproof cable |
-
2012
- 2012-04-20 CN CN2012201725546U patent/CN202523430U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183325A (en) * | 2013-05-23 | 2014-12-03 | 河南科信电缆有限公司 | Mineral insulated fireproof carbon fiber cable |
| CN103489519A (en) * | 2013-09-10 | 2014-01-01 | 江苏通鼎光电科技有限公司 | Railway digital signal cable with overall performance |
| CN115295228A (en) * | 2022-08-22 | 2022-11-04 | 特变电工山东鲁能泰山电缆有限公司 | 1kV rigid mineral insulation fireproof cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180420 |