CN216597075U

CN216597075U - High temperature resistant low pressure variable frequency cable

Info

Publication number: CN216597075U
Application number: CN202123180812.3U
Authority: CN
Inventors: 季强
Original assignee: Shenyang North Plastic Cable Manufacturing Co ltd
Current assignee: Shenyang North Plastic Cable Manufacturing Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-05-24
Anticipated expiration: 2031-12-17

Abstract

The utility model is suitable for the technical field of cables, and provides a high-temperature-resistant low-voltage variable-frequency cable which comprises three cable cores, wherein the outer surfaces of the three cable cores are provided with insulating layers, the high-temperature-resistant low-voltage variable-frequency cable can prevent the cable from burning under the matching of a first flame-retardant layer and a second flame-retardant layer, other layers in the cable are protected from being damaged, meanwhile, under the action of a high-temperature-resistant layer, the cable can be protected from softening or cracking to a great extent, under the action of a heat conducting strip, the temperature on the high-temperature-resistant layer can be rapidly conducted out, the cable cores in the cable are protected, under the matching of a compression-resistant layer and a wear-resistant layer, the service life of the cable can be prolonged, under the action of an electromagnetic shielding layer, the cable cores can be ensured to carry out stable signal transmission, under the matching of the heat-resistant layer and a supporting strip, the temperature on the high-temperature-resistant layer can be prevented from being transmitted into a filling layer to cause the softening of the filling layer, and meanwhile, the heat conducting strip is convenient to radiate heat better.

Description

High temperature resistant low pressure variable frequency cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a high-temperature-resistant low-voltage variable-frequency cable.

Background

A cable is a conductor made of one or more mutually insulated conductors and an outer insulating protective layer that carries power or information from one location to another.

Its high temperature resistant effect of current partial low voltage variable frequency cable is poor, when these cables are located the fire hazard environment of high temperature under, the crust of the poor cable of its high temperature resistant effect will take place to soften and bursts apart, then cause the inside other layers of cable to take place the burning, then can produce the toxic substance when current part is used for the inside protective layer burning of cable, it is very big to the human body injury, the protective layer of high temperature burning can make the inside cable conductor of its cable take place the short circuit or the fracture simultaneously, reduce the life of its cable, therefore, need provide neotype high temperature resistant low voltage variable frequency cable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-temperature-resistant low-voltage variable-frequency cable, and aims to solve the problems that when the cable is softened and cracked under high-temperature fire due to poor high-temperature-resistant effect of the existing partial low-voltage variable-frequency cable, a protective layer in the cable burns, toxic substances are generated by the burnt protective layer to damage human health, and meanwhile, the burnt protective layer can cause short circuit or fracture of a cable core wire to reduce the service life of the cable.

The utility model relates to a high-temperature-resistant low-voltage variable-frequency cable which comprises three cable cores, wherein insulating layers are arranged on the outer surfaces of the three cable cores, filling layers are arranged among the outer walls of the three insulating layers, a protective layer is arranged on the outer surface of the filling layer, a plurality of support bars are arranged on the outer wall of the protective layer in an equidistant distribution mode, a high-temperature-resistant layer is arranged between the same sides of the support bars, a plurality of heat conducting bars are arranged on the inner wall of the high-temperature-resistant layer in an equidistant distribution mode, a second flame-retardant layer is arranged on the outer wall of the high-temperature-resistant layer, and a wear-resistant layer is arranged on the outer wall of the second flame-retardant layer.

Preferably, every heat conduction strip all is located the intermediate position of two support bars, and is a plurality of heat conduction strip same one side all not contact with the outer wall of protective layer.

Preferably, the insulating layer is an ethylene propylene rubber layer, the heat conducting strip is a carbon fiber strip, the high temperature resistant layer is a silicone rubber layer, and the wear-resistant layer is a powder nitrile rubber layer.

Preferably, the protective layer comprises a pressure-resistant layer, and the pressure-resistant layer is composed of aramid yarn and radiation type ethylene propylene rubber.

Preferably, the outer wall of the pressure-resistant layer is provided with a first flame-retardant layer, and the outer wall of the first flame-retardant layer is provided with a heat-insulating layer.

Preferably, the outer wall of the heat insulation layer is provided with an electromagnetic shielding layer, and the electromagnetic shielding layer is a copper wire mesh layer.

Compared with the prior art, the utility model has the beneficial effects that: according to the high-temperature-resistant low-voltage variable-frequency cable, due to the cooperation of the first flame-retardant layer and the second flame-retardant layer, the cable can be prevented from burning, other layers in the cable can be protected from being damaged, meanwhile, under the action of the high-temperature-resistant layer, the cable can be protected from softening or cracking to a great extent, under the action of the heat conducting strip, the temperature on the high-temperature-resistant layer can be quickly conducted out, the cable core wire in the cable can be protected, under the cooperation of the compression-resistant layer and the wear-resistant layer, the service life of the cable can be prolonged, under the action of the electromagnetic shielding layer, the cable core wire can be ensured to be subjected to stable signal transmission, under the cooperation of the heat insulating layer and the supporting strip, the phenomenon that the filling layer is softened due to the fact that the temperature on the high-temperature-resistant layer is transmitted into the filling layer can be prevented, and meanwhile, the heat conducting strip can be convenient to better radiate heat.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a passivation layer structure according to the present invention;

in the figure: 1-cable core wire, 2-insulating layer, 3-filling layer, 4-protective layer, 401-pressure resistant layer, 402-first flame retardant layer, 403-heat insulating layer, 404, electromagnetic shielding layer, 5-supporting strip, 6-high temperature resistant layer, 7-heat conducting strip, 8-second flame retardant layer and 9-wear resistant layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-3, the present invention provides a high temperature resistant low voltage variable frequency cable: including three cable conductor 1, the surface of three cable conductor 1 all is provided with insulating layer 2, be provided with filling layer 3 between the outer wall of three insulating layer 2, the surface of filling layer 3 is provided with protective layer 4, the outer wall of protective layer 4 is provided with a plurality of support bars 5 that the equidistance distributes, a plurality of support bars 5 be provided with high temperature resistant layer 6 with between one side, the inner wall of high temperature resistant layer 6 is provided with a plurality of heat conduction strips 7 that the equidistance distributes, the outer wall of high temperature resistant layer 6 is provided with the fire-retardant layer 8 of second, the outer wall of the fire-retardant layer 8 of second is provided with wearing layer 9.

In this embodiment, through under the cooperation on the fire-retardant layer 8 of second, can prevent that the cable from taking place the burning, prevent that other layers of protection cable inside can not take place to damage, simultaneously in the effect on high temperature resistant layer 6, the protection cable that can the very big degree does not take place to soften or burst apart, under the effect of heat conduction strip 7, can lead away the temperature on high temperature resistant layer 6 fast, the inside cable conductor 1 of protection cable, under the cooperation of wearing layer 9, can improve the life of cable.

Further, every heat conduction strip 7 all is located the intermediate position of two support bars 5, and a plurality of heat conduction strips 7 do not contact with the outer wall of protective layer 4 with one side.

In this embodiment, the heat conducting strip 7 can be used to dissipate heat quickly from the high temperature resistant layer 6 under the action of the supporting strip 5.

Further, the insulating layer 2 is an ethylene propylene rubber layer, the heat conducting strips 7 are carbon fiber strips, the high temperature resistant layer 6 is a silicon rubber layer, and the wear-resistant layer 9 is a powder butadiene-acrylonitrile rubber layer.

In this embodiment, conveniently through insulating layer 2, heat conduction strip 7, resistant high temperature layer 6 and wearing layer 9's cooperation under, can protect the inside cable conductor 1 of cable better, improve the life of cable.

Further, the protective layer 4 comprises a pressure-resistant layer 401, and the pressure-resistant layer 401 is made of aramid yarn and radiation type ethylene propylene rubber.

In the present embodiment, the cable core 1 inside the cable can be prevented from being broken by the pressure-resistant layer 401.

Further, the outer wall of the compression-resistant layer 401 is provided with a first flame-retardant layer 402, and the outer wall of the first flame-retardant layer 402 is provided with a heat-insulating layer 403.

In this embodiment, the filling layer 3 and the cable core 1 inside the cable can be protected conveniently under the action of the first flame-retardant layer 402, and meanwhile, under the action of the heat-insulating layer 403, the temperature on the high-temperature-resistant layer 6 is prevented from being transferred to the filling layer 3, so that the filling layer 3 is prevented from being softened.

Further, an electromagnetic shielding layer 404 is disposed on an outer wall of the heat insulation layer 403, and the electromagnetic shielding layer 404 is a copper wire mesh layer.

In this embodiment, the electromagnetic shielding layer 404 can ensure stable signal transmission of the cable core 1 inside the cable.

The working principle and the using process of the utility model are as follows: according to the utility model, when the cable is in a fire high-temperature environment, the second flame-retardant layer 8 on the cable can greatly prevent the cable from burning, softening and cracking, and prevent other layers in the cable from burning and emitting toxic substances, when the cable does not burn, softening and cracking, but a large amount of heat exists in the second flame-retardant layer 8, at this time, the high-temperature-resistant layer 6 can greatly isolate the external temperature outside the cable, and simultaneously, the support bars 5, the heat-insulating layer 403 and the heat-conducting bars 7 in the cable are matched to rapidly dissipate the temperature in the high-temperature-resistant layer 6, when the temperature on the high-temperature-resistant layer 6 is rapidly dissipated, the filling layer 3, the protective layer 4 and the cable core wire 1 in the cable cannot be damaged, and then the cable can be continuously and normally used under the matching of the electromagnetic shielding layer 404 and the compression-resistant layer 401.

Wherein the first flame retardant layer 402 and the second flame retardant layer 8 are both chlorosulfonated polyethylene.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high temperature resistance low pressure variable frequency cable which characterized in that: including three cable conductor (1), it is three the surface of cable conductor (1) all is provided with insulating layer (2), and is three be provided with filling layer (3) between the outer wall of insulating layer (2), the surface of filling layer (3) is provided with protective layer (4), the outer wall of protective layer (4) is provided with a plurality of support bars (5) that the equidistance distributes, and is a plurality of support bar (5) be provided with high temperature resistant layer (6) between with one side, the inner wall on high temperature resistant layer (6) is provided with a plurality of heat conduction strip (7) that the equidistance distributes, the outer wall on high temperature resistant layer (6) is provided with the fire-retardant layer of second (8), the outer wall on the fire-retardant layer of second (8) is provided with wearing layer (9).

2. The high temperature resistant low voltage variable frequency cable of claim 1, wherein: every heat conduction strip (7) all are located the intermediate position of two support bars (5), and are a plurality of heat conduction strip (7) with one side all not contact with the outer wall of protective layer (4).

3. The high temperature resistant low voltage variable frequency cable of claim 1, wherein: the insulating layer (2) is an ethylene propylene rubber layer, the heat conducting strip (7) is a carbon fiber strip, the high-temperature resistant layer (6) is a silicon rubber layer, and the wear-resistant layer (9) is a powder nitrile rubber layer.

4. The high temperature resistant low voltage variable frequency cable of claim 3, wherein: the protective layer (4) comprises a pressure-resistant layer (401).

5. The high temperature resistant low voltage variable frequency cable of claim 4, wherein: the outer wall of the pressure-resistant layer (401) is provided with a first flame-retardant layer (402), and the outer wall of the first flame-retardant layer (402) is provided with a heat-insulating layer (403).

6. The high temperature resistant low voltage variable frequency cable of claim 5, wherein: the outer wall of the heat insulation layer (403) is provided with an electromagnetic shielding layer (404), and the electromagnetic shielding layer (404) is a copper wire mesh layer.