CN208521660U - A kind of wire and cable of ultralow temperature - Google Patents

Abstract

The utility model discloses a kind of wire and cables of ultralow temperature, including the first insulating layer, insulating layer, shielded layer and cable, the inside of first insulating layer is filled with insulating layer, limit hole is offered on the insulating layer, limit is plugged with heating tape in the limit hole, and the inside of the insulating layer is plugged with shielded layer, and the outside of the cable is enclosed with second insulating layer, there are three the second insulating layer is set altogether, and three cables are distributed by center of circle circular array of the center of the first insulating layer.The utility model has the advantages of the phenomenon that insulating layer and restrictive coating can be prevented to be hardened, become fragile or even crack.

Description

A kind of wire and cable of ultralow temperature

Technical field

The utility model relates to power cable technical field, specially a kind of wire and cable of ultralow temperature.

Background technique

Ultralow-temperature cable be greatly lowered using the resistance of raffinal under cryogenic conditions or copper, heat-sinking capability mentions significantly High feature and the large capacity transmission technology developed.But the insulating layer and restrictive coating of cable can be hardened in low temperature environment, become fragile The phenomenon that even cracking easily leads to service personnel's electric shock in maintenance, brings security risk.

Utility model content

The purpose of this utility model is to provide a kind of wire and cable of ultralow temperature, insulating layer and restrictive coating can be prevented by having The advantages of the phenomenon that being hardened, become fragile or even cracking, the insulating layer and restrictive coating for solving cable can become in low temperature environment Firmly, the problem of the phenomenon that becoming fragile or even cracking easily leads to service personnel's electric shock in maintenance, brings security risk.

To achieve the above object, the utility model provides the following technical solutions: a kind of wire and cable of ultralow temperature, including the One insulating layer, insulating layer, shielded layer and cable, the inside of first insulating layer are filled with insulating layer, open on the insulating layer Equipped with limit hole, limit is plugged with heating tape in the limit hole, and the inside of the insulating layer is plugged with shielded layer, the cable Outside be enclosed with second insulating layer, there are three the second insulating layer is set altogether, and three cables are with the center of the first insulating layer For the distribution of center of circle circular array.

Preferably, there are three the heating tape is set altogether, three heating tape annular arrays are distributed in insulating layer, and three companions The torrid zone is located between the angle of two adjacent cables.

Preferably, hole compatible with cable size there are three being opened up on the shielded layer, and between the center of circle of three holes Angle is 60 degree.

Preferably, the heating tape is made of conductive plastic material, and conductive plastics is powered on rear electric current by one Core is formed into a loop by conductive conductive plastics to another core.

Preferably, the shielded layer works out webbed metal net shaped braiding layer using tin-coated copper, is that signal wire is wrapped up The transmission line to get up.

Compared with prior art, the beneficial effects of the utility model are as follows: the utility model passes through setting heating tape, heat tracing Band is exactly to convert electrical energy into thermal energy, and by direct heat exchange, supplement is passed through the heat that thermal insulation material is lost by heat tracing equipment, It is allowed to maintain a reasonable level, to prevent ambroin of the cable under ultra-low temperature surroundings outside cable because low temperature is led Cause the effect of easy fragmentation.

Detailed description of the invention

Fig. 1 is the schematic view of the front view of the utility model；

Fig. 2 is the side structure schematic view of the utility model.

In figure: 1, the first insulating layer；2, insulating layer；3, limit hole；4, shielded layer；5, second insulating layer；6, cable；7, companion The torrid zone.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1 to Fig. 2 is please referred to, a kind of embodiment provided by the utility model: a kind of wire and cable of ultralow temperature, including the One insulating layer 1, insulating layer 2, shielded layer 4 and cable 6, the inside of the first insulating layer 1 are filled with insulating layer 2, and insulating layer uses glass Glass fibrous material is made, and for the heat preservation of cable and has reliable insulation performance, insulating layer 2 with good heat resistance On offer limit hole 3, convenient for limiting interspersed heating tape 7, limit is plugged with heating tape 7 in limit hole 3, and heating tape 7 is using leading Electric plastic material is made, and conductive plastics is powered on rear electric current by single line core by conductive conductive plastics to another core And be formed into a loop, electric energy makes heating tape 7 heat up, and resistance increases immediately, and after 7 temperature of heating tape rises to certain value, resistance is big To the degree for almost blocking electric current, temperature is no longer increased, and heating tape 7 is passed to the lower system that is heated of temperature at the same time Heat, there are three heating tape 7 is set altogether, three 7 annular arrays of heating tape are distributed in insulating layer 2, and three heating tapes 7 distinguish positions Between the angle of two adjacent cables 6, by the way that heating tape 7 is arranged, heating tape 7 is the thermal resistance for converting electrical energy into thermal energy, By direct heat exchange, supplement is passed through the heat that thermal insulation material is lost by heat tracing equipment, is allowed to maintain a reasonable water It is flat, to prevent first insulating layer 1 of the cable under ultra-low temperature surroundings outside cable because low temperature leads to the effect of easy fragmentation.

The inside of insulating layer 2 is plugged with shielded layer 4, and shielded layer 4 works out webbed metal net shaped braiding using tin-coated copper Layer, is the transmission line that signal wire is wrapped up, shielded layer 4 be to reduce influence of the external electromagnetic field to power supply or communication line and A kind of conducting wire with metal braid shell specially used, and the effect of the outside electromagnetic radiation energy of route, shielded layer 4 can be prevented On open up there are three hole compatible with 6 size of cable, and the angle between the center of circle of three holes is 60 degree, the outside of cable 6 It is enclosed with second insulating layer 5, there are three second insulating layer 5 is set altogether, and three cables 6 are using the center of the first insulating layer 1 as the center of circle Circular array distribution, the first insulating layer 1 and second insulating layer 5 are all made of silicon rubber, and silicon rubber compression set is small, uses Temperature range is wide, outside anti-oxidant, weather-proof, shockproof, moisture-proof and good electrical insulation properties, low temperature resistant, resistance to ablation and radiation resistance Etc. performances.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (5)

1. a kind of wire and cable of ultralow temperature, including the first insulating layer (1), insulating layer (2), shielded layer (4) and cable (6), Be characterized in that: the inside of first insulating layer (1) is filled with insulating layer (2), offers limit hole on the insulating layer (2) (3), limit is plugged with heating tape (7) in the limit hole (3), and the inside of the insulating layer (2) is plugged with shielded layer (4), institute The outside for stating cable (6) is enclosed with second insulating layer (5), there are three the second insulating layer (5) sets altogether, and three cables (6) It is distributed by center of circle circular array of the center of the first insulating layer (1).

2. a kind of wire and cable of ultralow temperature according to claim 1, it is characterised in that: the heating tape (7) is equipped with altogether Three, three heating tape (7) annular arrays are distributed in insulating layer (2), and three heating tapes (7) are located at adjacent two Between the angle of cable (6).

3. a kind of wire and cable of ultralow temperature according to claim 1, it is characterised in that: opened up on the shielded layer (4) There are three holes compatible with cable (6) size, and the angle between the center of circle of three holes is 60 degree.

4. a kind of wire and cable of ultralow temperature according to claim 1, it is characterised in that: the heating tape (7) uses and leads Electric plastic material is made, and conductive plastics is powered on rear electric current by single line core by conductive conductive plastics to another core And it is formed into a loop.

5. a kind of wire and cable of ultralow temperature according to claim 1, it is characterised in that: the shielded layer (4) is using plating Tin copper works out webbed metal net shaped braiding layer, is the transmission line that signal wire is wrapped up.