CN209561053U - Extremely cold area Novel cold-resistant cable - Google Patents

Abstract

The utility model discloses a kind of extremely cold area Novel cold-resistant cables, including conductor, successively wrapped first heat insulation layer, the second heat insulation layer outside the conductor, the wrapped polyimide insulative layer between the first heat insulation layer and the second heat insulation layer, in the second heat insulation layer outer cladding polytrifluorochloroethylene liner layer, the braided steel wire armor outside polytrifluorochloroethylene liner layer, the wrapped polyamidoimide Transposed wind layer outside steel wire armor layer, finally, the outermost layer in cable extrudes ultra-high molecular weight polyethylene oversheath.This cable has the performances such as strong low temperature resistant, corrosion-resistant, tensile capacity, good insulation preformance, extreme environment stability inferior be good, suitable for adverse circumstances of extremely trembling with fear.

Description

Extremely cold area Novel cold-resistant cable

Technical field

The utility model relates to wire and cable fields, and in particular to a kind of extremely cold area Novel cold-resistant cable.

Background technique

Power cable is usually made of conductor, insulating layer and restrictive coating, only the cable ability of configuration insulation and restrictive coating Accomplish safety utilization of electric power.But the laying predetermined temperature of most of power cable is generally all not less than 0 DEG C, needs when being lower than 0 DEG C to electricity Cable ontology carries out heat treatment, to guarantee cable body temperature not less than 0 DEG C.Since under low temperature environment, cable insulation and sheath Material can become embrittlement, natural cracking, cause conductor exposed and be not available.

And northern China extremely cold area or south poles investigate the minimum environment temperature on ground up to subzero 60 or so, this is resulted in The performance of cable insulation and sheath declines to a great extent under the adverse circumstances, can not carry out normal effective work, often break Split the phenomenon with short circuit.

Utility model content

In order to overcome the deficiencies in the prior art, provide it is a kind of it is low temperature resistant, corrosion-resistant, tensile capacity is strong, insulating properties The Novel cold-resistant cable that energy is good, extreme environment stability inferior is good.

To achieve the above object, the utility model provides a kind of extremely cold area Novel cold-resistant cable, including conductor, described Successively wrapped the first heat insulation layer with a thickness of 0.2mm, the second heat insulation layer with a thickness of 3mm outside conductor, are protected first The wrapped polyimide insulative layer with a thickness of 0.7 ~ 2.0mm between warm thermal insulation layer and the second heat insulation layer, in the second thermal insulation separation Polytrifluorochloroethylene liner layer of the thermosphere outer cladding with a thickness of 1.0 ~ 1.8mm, the braided steel wire outside polytrifluorochloroethylene liner layer Armor, the wrapped polyamidoimide Transposed wind layer with a thickness of 0.04mm, overlap rate are not less than outside steel wire armor layer 15%；Finally, the outermost layer in cable extrudes the ultra-high molecular weight polyethylene oversheath with a thickness of 1.8mm ~ 3.0mm.Preferably, The conductor is stranding into again again using five class tinned copper wire elder generation synnemas.

Preferably, first heat insulation layer be silicon rubber glass fibre protect heat insulating belt, using overlapping lapping structure, Wrapped overlap rate is 30 ~ 50%.

Preferably, second heat insulation layer is aerogel blanket, and using gap lapping structure, clearance rate is not more than 2%.

Preferably, the steel wire armor layer is Langaloy steel wire armor, and the radical of Langaloy steel wire is 30 ~ 50 Root, string diameter are 0.8 ~ 2.0mm.

Compared with prior art, the utility model has the beneficial effects that:

1, cable uses Double insulating heat insulation structural, so that cable internal insulation effect is more preferable, wherein the first insulation Layer protects heat insulating belt using silicon rubber glass fibre, so that cable has insulation, ageing-resistant, corrosion-resistant, against weather etc. Advantage, using aerogel blanket as the second heat insulation layer, which is 2-5 times of traditional insulation materials, and absolutely Hydrophobic can effectively prevent moisture to enter in cable conductor, and reachable -200 DEG C using minimum environment temperature.

2, cable insulation uses the polyimides high-molecular organic material with high insulating property, which is resistant to extremely low Temperature is used for a long time reachable -200 DEG C of minimum temperature, and all will not embrittlement in -269 DEG C of liquid helium；

3, liner layer is using resistance to low temperature also particularly pertinent polytrifluorochloroethylene, in liquid nitrogen, liquid oxygen and liquefaction day Embrittlement or creep will not all occur in right gas, can even be used under certain condition close under absolute zero (- 273 DEG C)；

4, inner restrictive coating uses the very high superhigh molecular weight polyethylene material of impact resistant strength, which can be for a long time in liquid nitrogen High tenacity can all be kept by being used for a long time at temperature (- 196 DEG C) ~ 113 DEG C；

5, wrapping layer is excellent using dimensional stability and creep resistance, corrosion-resistant, radiotolerant polyamidoimide film, It is used for a long time reachable -195 DEG C of minimum temperature, has excellent resistance to low temperature, substantially increases the cold tolerance of cable；In addition Cable also adds Langaloy steel wire armouring, which is the deep cooling steel of the nickel of addition 9% in ferritic steel for low temperature service, uses Temperature down to -196 DEG C, can improve the intensity of cable while further improve the cold resistance of cable.

6, this cable has strong low temperature resistant, corrosion-resistant, tensile capacity, good insulation preformance, extreme environment stability inferior good etc. Performance, suitable for extremely cold adverse circumstances.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for Illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, art technology Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.

As shown in Figure 1, the utility model provides a kind of extremely cold area Novel cold-resistant cable, including conductor 1, the conductor 1 It being tangled again structure using the bundle strand or strand of five class tinned copper conductors, You Duogen tinned copper wire is twisted again by bundle strand or strand, Meet the standard of the 5th class soft structure conductor in IEC60228；Successively wrapped the first heat preservation with a thickness of 0.2mm outside the conductor 1 Thermal insulation layer 2, the second heat insulation layer 3 with a thickness of 3mm, wherein the first heat insulation layer 2 be silicon rubber glass fibre protect every The torrid zone, using overlapping lapping structure, wrapped overlap rate is 30 ~ 50%, which makes cable have insulation, ageing-resistant, resistance to The advantages that burn into against weather；Second heat insulation layer 3 is aerogel blanket, and using gap lapping structure, clearance rate is not more than 2%, which makes the heat insulation of cable be 2-5 times of traditional cable heat insulation, and absolute hydrophobic, can effectively prevent water Divide and enters in cable conductor, reachable -200 DEG C using minimum environment temperature；In the first heat insulation layer and the second heat insulation layer Between the wrapped polyimide insulative layer 4 with a thickness of 0.7 ~ 2.0mm, which makes cable be resistant to extremely low temperature, is used for a long time most Reachable -200 DEG C of low temperature, and all will not embrittlement in -269 DEG C of liquid helium；In the second heat insulation layer outer cladding thickness For the polytrifluorochloroethylene liner layer 5 of 1.0 ~ 1.8mm, so that cable will not all occur in liquid nitrogen, liquid oxygen and liquefied natural gas Embrittlement or creep can even use under certain condition close under absolute zero (- 273 DEG C)；In polytrifluorochloroethylene liner The outer braided steel wire armor 6 of layer, is woven by Langaloy steel wire, and steel wire radical is 30 ~ 50, and string diameter is 0.8 ~ 2.0mm, The deep cooling steel of 9% nickel is added in ferritic steel for low temperature service, the intensity while again of cable down to -196 DEG C, can be improved using temperature Further improve the cold resistance of cable；The wrapped polyamidoimide Transposed wind with a thickness of 0.04mm outside steel wire armor layer Layer 7, overlap rate are not less than 15%, are used for a long time reachable -195 DEG C of minimum temperature, have excellent resistance to low temperature, greatly improve The cold tolerance of cable；Finally, the outermost layer in cable extrudes outside the ultra-high molecular weight polyethylene with a thickness of 1.8mm ~ 3.0mm Sheath 8.

The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill people of this field For member, without departing from the principle of this utility model, several variations and modifications can also be made, these also should be regarded as belonging to In the protection scope of the utility model.

Claims (5)

1. a kind of extremely cold area Novel cold-resistant cable, which is characterized in that including conductor, outside the conductor successively it is wrapped with a thickness of The first heat insulation layer of 0.2mm, the second heat insulation layer with a thickness of 3mm, in the first heat insulation layer and the second thermal insulation separation The wrapped polyimide insulative layer with a thickness of 0.7 ~ 2.0mm between thermosphere, the second heat insulation layer outer cladding with a thickness of 1.0 ~ The polytrifluorochloroethylene liner layer of 1.8mm, the braided steel wire armor outside polytrifluorochloroethylene liner layer, outside steel wire armor layer The wrapped polyamidoimide Transposed wind layer with a thickness of 0.04mm, overlap rate are not less than 15%；Finally, in the outermost layer of cable Extrude the ultra-high molecular weight polyethylene oversheath with a thickness of 1.8mm ~ 3.0mm.

2. extremely cold area according to claim 1 Novel cold-resistant cable, it is characterised in that: the conductor is plated using five classes Tin copper wire elder generation synnema is stranding into again again.

3. extremely cold area according to claim 1 Novel cold-resistant cable, it is characterised in that: first heat insulation layer Heat insulating belt is protected for silicon rubber glass fibre, using overlapping lapping structure, wrapped overlap rate is 30 ~ 50%.

4. extremely cold area according to claim 1 Novel cold-resistant cable, it is characterised in that: second heat insulation layer For aerogel blanket, using gap lapping structure, clearance rate is not more than 2%.

5. extremely cold area according to claim 1 Novel cold-resistant cable, it is characterised in that: the steel wire armor layer is height Nickel alloy steel wire armor layer, the radical of Langaloy steel wire are 30 ~ 50, and string diameter is 0.8 ~ 2.0mm.