CN216133674U

CN216133674U - Mineral insulated cable

Info

Publication number: CN216133674U
Application number: CN202023112563.XU
Authority: CN
Inventors: 田跃红; 徐杰明
Original assignee: Jiangsu Shuanghua Wire And Cable Co ltd
Current assignee: Jiangsu Shuanghua Wire And Cable Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-03-25
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a mineral insulated cable, which comprises a conductor and a filling layer, wherein the outer surface of the conductor is wrapped by an inner protective layer, the conductor and the inner protective layer are positioned inside the filling layer, the outer surface of the filling layer is wrapped by an outer protective layer, the inner protective layer comprises an inner insulating layer, the outer surface of the inner insulating layer is provided with a flame retardant layer, and the outer surface of the flame retardant layer is provided with a heat insulation layer. The potential safety hazard exists.

Description

Mineral insulated cable

Technical Field

The utility model relates to the technical field of cables, in particular to a mineral insulated cable.

Background

Mineral insulated cable is the main use mine mobile electrical equipment, the mining machinery, the jack-up transportation machinery, and mineral transportation, the power transmission of device mechanisms such as production and processing, signal control, safe ground connection, and mineral insulated cable operational environment is comparatively abominable than other cables, consequently, to the requirement of cable than higher, mineral cable adopts ordinary cable to act as the use at present mostly, and the insulating properties of ordinary cable is not enough, the demand of the environment that satisfies that can not be fine, there is the potential safety hazard, for this we propose a mineral insulated cable, solve above problem of proposing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mineral insulated cable which has the advantage of good insulating property when the cable is used, and solves the problems that the existing mineral cable is mostly used as a common cable, but the common cable has insufficient insulating property, cannot well meet the requirement of the environment and has potential safety hazard.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a mineral insulated cable, includes conductor and filling layer, the surface parcel of conductor has interior inoxidizing coating, conductor and interior inoxidizing coating are located the inside of filling layer, the surface parcel of filling layer has outer inoxidizing coating.

Preferably, the inner protective layer comprises an inner insulating layer, a flame-retardant layer is arranged on the outer surface of the inner insulating layer, and a heat insulation layer is arranged on the outer surface of the flame-retardant layer.

Preferably, the outer protective layer comprises an outer insulating layer, the outer surface of the outer insulating layer is provided with a wear-resistant layer, the outer surface of the wear-resistant layer is provided with an anti-oxidation layer, and the outer surface of the anti-oxidation layer is provided with a waterproof layer.

Preferably, the center of the interior of the filling layer is provided with a reinforcing core, and the reinforcing core is tightly attached to the outer surface of the inner protective layer.

Preferably, the inner insulating layer is a mica insulating layer, the flame-retardant layer is an aluminum hydroxide layer, and the heat-insulating layer is a ceramic fiber layer.

Preferably, the outer insulating layer is a rubber layer, the wear-resistant layer is an ultra-high molecular weight polyethylene layer, the oxidation-resistant layer is a silicic acid gel layer, and the waterproof layer is a polyethylene layer.

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

1. the filling layer is arranged, so that the conductor can be effectively protected, the situation that the conductor cannot be normally used due to excessive extrusion is prevented, the conductor can be effectively protected by arranging the inner protective layer, the outer part of the filling layer can be protected by arranging the outer protective layer, and by arranging the structure, the cable has the advantage of good insulating property when in use, and the problems that the common cable is mostly used as a common cable, the common cable is insufficient in insulating property, cannot well meet the requirement of the environment and has potential safety hazards are solved.

2. The inner insulating layer is arranged, so that the conductors can be prevented from being connected and conducting, the inner flame-retardant layer is arranged, the cable can be prevented from burning due to the temperature rise of the conductors, and the heat emitted by the conductors can be effectively isolated by the heat-insulating layer;

the outer layer can be insulated by arranging the outer insulating layer, accidents are prevented, the wear resistance of the cable can be improved by arranging the wear-resistant layer, the service life of the cable can be prolonged by arranging the anti-oxidation layer, and external water vapor can be prevented from entering the cable by arranging the waterproof layer;

by providing a reinforcing core, the conductor and the inner protective layer can be fixed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of an outer protective layer structure according to the present invention;

FIG. 3 is a cross-sectional view of an inner shield structure according to the present invention;

fig. 4 is a perspective view of an outer protective layer structure of the present invention.

In the figure: 1. a conductor; 2. a filling layer; 3. an inner protective layer; 31. an inner insulating layer; 32. a flame retardant layer; 33. a thermal insulation layer; 4. an outer protective layer; 41. an outer insulating layer; 42. a wear layer; 43. an anti-oxidation layer; 44. a waterproof layer; 5. and (6) reinforcing the core.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a mineral insulated cable includes a conductor 1 and a filling layer 2, the filling layer 2 is made of asbestos, the asbestos is fibrous mineral, is silicate of magnesium, calcium and iron, has sericin gloss, is high temperature resistant, acid and alkali resistant, and is non-conductive, an inner protective layer 3 is wrapped on the outer surface of the conductor 1, the conductor 1 and the inner protective layer 3 are located inside the filling layer 2, an outer protective layer 4 is wrapped on the outer surface of the filling layer 2, the conductor 1 can be effectively protected by arranging the filling layer 2, the conductor 1 is prevented from being excessively extruded to cause abnormal use, the conductor 1 can be effectively protected by arranging the inner protective layer 3, the outer protective layer 4 can be used for protecting the outside of the filling layer 2, the cable has the advantage of good insulating property when in use by arranging the above structure, and the problem that most of the existing mineral cable is used by a common cable is solved, and the common cable has insufficient insulating property, cannot well meet the requirement of the environment and has the problem of potential safety hazard.

Referring to fig. 3, the inner protective layer 3 includes an inner insulating layer 31, a flame retardant layer 32 is disposed on an outer surface of the inner insulating layer 31, and a thermal insulation layer 33 is disposed on an outer surface of the flame retardant layer 32, and by disposing the inner insulating layer 31, it is possible to prevent the conductors 1 from being electrically connected to each other, and by disposing the inner flame retardant layer 32, it is possible to prevent the cable from being burnt due to the temperature rise of the conductors 1, and by disposing the thermal insulation layer 33, it is possible to effectively isolate the heat generated by the conductors 1.

Please refer to fig. 2 and 4, the outer protective layer 4 includes an outer insulating layer 41, the outer surface of the outer insulating layer 41 is provided with a wear layer 42, the outer surface of the wear layer 42 is provided with an oxidation resistant layer 43, the outer surface of the oxidation resistant layer 43 is provided with a waterproof layer 44, by setting the outer insulating layer 41, the outer layer can be insulated, accidents are prevented, by setting the wear layer 42, the wear resistance of the cable can be increased, by setting the oxidation resistant layer 43, the service life of the cable can be prolonged, by setting the waterproof layer 44, it is possible to prevent outside water vapor from entering the inside of the cable.

Referring to fig. 1 and 2, a reinforcing core 5 is disposed at the center inside the filling layer 2, the reinforcing core 5 is closely attached to the outer surface of the inner protective layer 3, and the conductor 1 and the inner protective layer 3 can be fixed by disposing the reinforcing core 5.

Referring to fig. 3, the inner insulating layer 31 is a mica insulating layer, has good insulating property and heat resistance, and acid, alkali, compression and peeling resistance, and is mainly used as an insulating material for electrical equipment and electrical equipment, the flame retardant layer 32 is an aluminum hydroxide layer, and has the advantages of non-toxicity, good stability, no generation of toxic gas at high temperature, reduction of smoke generation during plastic combustion, low cost, wide source, the heat insulating layer 33 is a ceramic fiber layer, and the ceramic fiber is a fibrous light refractory material, and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance, and the like.

Referring to fig. 2 and 4, the outer insulating layer 41 is a rubber layer, the rubber has good elasticity, high strength, good comprehensive performance and good insulation, the wear-resistant layer 42 is an ultra-high molecular weight polyethylene layer, the ultra-high molecular weight polyethylene is a linear thermoplastic engineering plastic with excellent comprehensive performance, the ultra-high molecular weight polyethylene fiber is a third-generation special fiber in the world, the specific strength is the highest in chemical fiber, and has good wear resistance, impact resistance, corrosion resistance, light resistance and other excellent performances, the oxidation-resistant layer 43 is a silica gel layer, the silica gel is a high-activity adsorption material, belongs to an amorphous substance, the silica gel mainly comprises silica, is stable in chemical property and non-combustible, the waterproof layer 44 is a polyethylene layer, and the polyethylene has the characteristics of high strength, impact resistance, environmental stress cracking resistance, corrosion resistance, low temperature resistance, strict sealing, no leakage, long service life and the like, it is waterproof, moistureproof, acid, alkali, salt, oil resistant.

When in use, the inner protective layer 3 can effectively protect the conductor 1, wherein the inner insulating layer 31 is a mica insulating layer which can prevent the conductors 1 from being connected and conductive, the flame-retardant layer 32 is an aluminum hydroxide layer which can prevent the cable from burning due to the temperature rise of the conductor 1, the heat-insulating layer 33 is a ceramic fiber layer which can effectively isolate the heat emitted by the conductor 1, the filling layer 2 can effectively protect the conductor 1 from being extruded excessively to cause abnormal use, the outer protective layer 4 can protect the outside of the cable, wherein the outer insulating layer 41 is a rubber layer which can insulate the outer layer to prevent accidents, the wear-resistant layer 42 is an ultra-high molecular weight polyethylene layer which can increase the wear resistance of the cable, the oxidation-resistant layer 43 is a silicate gel layer which can prolong the service life of the cable, and the waterproof layer 44 is a polyethylene layer, inside can preventing outside steam from getting into the cable, through setting up above structure, possess the cable when using, insulating properties is good advantage, has solved present mineral cable and has adopted ordinary cable mostly to act as the use, and the insulating properties of ordinary cable is not enough, and the demand that satisfies the environment that can not be fine has the problem of potential safety hazard.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mineral-insulated cable comprising a conductor (1) and a filler layer (2), characterized in that: the surface parcel of conductor (1) has interior inoxidizing coating (3), conductor (1) and interior inoxidizing coating (3) are located the inside of filling layer (2), the surface parcel of filling layer (2) has outer inoxidizing coating (4), interior inoxidizing coating (3) are including internal insulation layer (31), the surface of internal insulation layer (31) is provided with fire-retardant layer (32), the surface of fire-retardant layer (32) is provided with insulating layer (33), outer inoxidizing coating (4) are including external insulation layer (41), the surface of external insulation layer (41) is provided with wearing layer (42), the surface of wearing layer (42) is provided with oxidation resisting layer (43), the surface of oxidation resisting layer (43) is provided with waterproof layer (44).

2. A mineral-insulated cable according to claim 1, characterized in that: the center department of filling layer (2) inside is provided with reinforced core (5), reinforced core (5) closely laminate with the surface of interior inoxidizing coating (3).

3. A mineral-insulated cable according to claim 1, characterized in that: the inner insulating layer (31) is a mica insulating layer, the flame-retardant layer (32) is an aluminum hydroxide layer, and the heat insulating layer (33) is a ceramic fiber layer.

4. A mineral-insulated cable according to claim 1, characterized in that: the outer insulating layer (41) is a rubber layer, the wear-resistant layer (42) is an ultrahigh molecular weight polyethylene layer, the oxidation-resistant layer (43) is a silicic acid gel layer, and the waterproof layer (44) is a polyethylene layer.