CN209843342U

CN209843342U - High-insulation fireproof cable

Info

Publication number: CN209843342U
Application number: CN201920720454.4U
Authority: CN
Inventors: 赵力明
Original assignee: Eurolink Cable Co Ltd
Current assignee: Eurolink Cable Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2019-12-24
Anticipated expiration: 2029-05-20

Abstract

The utility model relates to the technical field of cables, especially, relate to a high-insulation fireproof cable. The protection device comprises a plurality of inner protection parts arranged in a cable, so that the protection of a single cable is realized when a fire disaster happens, when one cable is blown out to cause a fault, other cables can not be influenced to continuously work, and the problem that all cable cores of a fireproof cable interrupt power supply simultaneously when the fault is blown out is solved; the mineral protection layer and the flame-retardant enhancement layer are respectively arranged on the outer side of each inner protection part, so that the fireproof performance of the fireproof cable is enhanced, and other problems caused by deflection of the cable due to uneven laying of the mineral protection layer of the fireproof cable are solved; the adoption has realized when not taking place the conflagration at the interior guard portion shell that the XLPE layer outside set up, to the buffering reinforcing of inside guard portion, when taking place the conflagration, to the protection on XLPE layer.

Description

High-insulation fireproof cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a high-insulation fireproof cable.

Background

The fireproof cable can still ensure that the cable can continuously transmit electric energy for a certain time under the extreme condition of fire, so that people can not cause greater economic and property loss and personal safety loss due to power failure under the condition that fire occurs. The traditional fireproof cable adopts alumina powder to realize the flame retardant function, but the alumina powder can cause the deflection of the cable core inside the fireproof cable due to uneven laying when laid, thereby causing more problems. And traditional XLPE insulated cable because XLPE layer can take place to melt under high temperature to influence the heat-resisting cut-through performance of cable, probably because external force collision makes the cable take place to warp, thereby arouse bigger problem.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a high-insulation fireproof cable aiming at the technical defects, and the adoption of the arrangement of a plurality of inner protective parts in the cable realizes the protection of a single cable when a fire disaster happens, when one cable is blown out, other cables can not be influenced to continuously work, and the problem that all cable cores interrupt power supply simultaneously when the fireproof cable is blown out; the mineral protection layer and the flame-retardant enhancement layer are respectively arranged on the outer side of each inner protection part, so that the fireproof performance of the fireproof cable is enhanced, and other problems caused by deflection of the cable due to uneven laying of the mineral protection layer of the fireproof cable are solved; the adoption has realized when not taking place the conflagration at the interior protective housing that the XLPE layer outside set up, to the buffering reinforcing of inside protection portion, when taking place the conflagration, to the protection on XLPE layer.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a cable core, an inner protection part and an outer protection part; the cable core is arranged in the inner protection part; the four inner protection parts are arranged in the outer protection part; the cable core comprises a copper core and a polyethylene sheath; the copper core is arranged in the polyethylene sheath; the inner protection part comprises an XLPE layer and an inner protection shell; the XLPE layer is arranged outside the cable core; an inner protective shell is arranged outside the XLPE layer; the middle parts of the plurality of inner protection parts are provided with limiting blocks; an isolated flame-retardant area is arranged between the two inner protective parts; a flame retardant is arranged in the isolated flame-retardant area; the outer protective part comprises an outer protective layer, a metal protective layer, a mineral protective layer and a flame-retardant reinforcing layer; a metal protective layer is arranged in the outer protective part; limiting lugs are arranged on the periphery of the inner wall of the metal protective layer; a flame retardant is arranged in the limiting lug; a mineral protection layer is arranged between the two limiting lugs; and a flame-retardant enhancement layer is arranged in the mineral protection layer.

Further optimizing the technical scheme, the inner protective shell adopts ceramic silicon rubber.

Further optimizes the technical scheme, and the fire retardant adopts magnesium oxide powder.

Further optimizing the technical scheme, the flame-retardant enhancement layer adopts tetrafluoroethylene.

Compared with the prior art, the utility model has the advantages of it is following: 1. the structure is favorable for ensuring that other cable cores can continue to work when a certain cable core is burnt out and cannot work; 2. the mineral protective layer and the flame-retardant reinforcing layer are arranged on the outer side of each inner protective part, so that the structure is favorable for ensuring the smooth laying of the mineral protective layer and the enhancement of the flame-retardant performance of the fireproof cable; 3. the interior protective housing that the XLPE layer outside set up, the beneficial assurance of this structure when daily use to the buffer protection of cable core and the protection on inside XLPE layer when taking place the conflagration.

Drawings

Fig. 1 is a schematic view of the overall structure of a high-insulation fireproof cable.

Fig. 2 is a schematic overall sectional structure diagram of a high-insulation fireproof cable.

Fig. 3 is a schematic partial sectional view of a high-insulation fireproof cable.

In the figure: 1. a cable core; 2. an inner protection part; 3. an outer protective portion; 101. a copper core; 102. a polyethylene jacket; 201. an XLPE layer; 202. an inner protective housing; 203. a limiting block; 204. isolating the flame-retardant zone; 205. a flame retardant; 301. an outer protective layer; 302. a metal protective layer; 303. a mineral protective layer; 304. a flame retardant reinforcement layer; 305. limiting lugs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-3, a high-insulation fireproof cable is characterized in that: comprises a cable core 1, an inner protection part 2 and an outer protection part 3; the cable core 1 is arranged in the inner protection part 2; the four inner protection parts 2 are arranged in the outer protection part 3; the cable core 1 comprises a copper core 101 and a polyethylene sheath 102; the copper core 101 is arranged in a polyethylene sheath 102; the inner protection part 2 comprises an XLPE layer 201 and an inner protection shell 202; the XLPE layer 201 is arranged outside the cable core 1; an inner protective shell 202 is arranged outside the XLPE layer 201; the middle parts of the plurality of inner protection parts 2 are provided with limiting blocks 203; an isolated flame-retardant area 204 is arranged between the two inner protection parts 2; a flame retardant 205 is arranged in the isolated flame-retardant zone 204; the outer protective part 3 comprises an outer protective layer 301, a metal protective layer 302, a mineral protective layer 303 and a flame retardant reinforcing layer 304; a metal protective layer 302 is arranged in the outer protective part 3; limiting lugs 305 are arranged on the periphery of the inner wall of the metal protective layer 302; a flame retardant 205 is arranged in the limiting lug 305; a mineral protection layer 303 is arranged between the two limiting lugs 305; a flame-retardant enhancement layer 304 is arranged in the mineral protection layer 303; the inner protective shell 202 is made of ceramic silicon rubber; the flame retardant 205 adopts magnesium oxide powder; the flame-retardant reinforcing layer 304 is made of tetrafluoroethylene.

When in use, as shown in fig. 1-3, when the fireproof cable is assembled, because the inner wall of the metal protective layer 302 is provided with the limiting lug 305, when the mineral protective layer 303 is laid, the fireproof cable can be laid in blocks and blocks to ensure that the mineral protective layer 303 is laid with uniform thickness, when in daily use, because the inner protective shell 202 is arranged outside the inner protective layer and has certain elasticity at normal temperature, the fireproof cable can have certain anti-vibration capability when in daily use, and because the XLPE layer 201, the inner protective shell 202 and the flame retardant 205 in the isolated flame retardant zone 204 are all made of insulating materials inside the inner protective part 2, the fireproof cable also has excellent insulating property when in daily use, when a fire occurs, because the inner protective part 2 is separately arranged, when one inner protective part 2 is burnt and damaged, heat is blocked by the isolated flame retardant zone 204 arranged at the middle part of the two inner protective parts 2, guaranteed when the protection part 2 is destroyed by the burning in a certain, the cable in the protection part 2 can not be influenced and continue work in other, and XLPE layer 201 in the protection part 2, when taking place to soften under the high temperature state, owing to be provided with interior protective housing 202, and interior protective housing 202 adopts ceramic silicon rubber, forms hard ceramic casing when the high temperature to can protect inside cable not by external force impact, thereby cause other dangerous problems.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a high insulation fireproof cable which characterized in that: comprises a cable core (1), an inner protection part (2) and an outer protection part (3); the cable core (1) is arranged in the inner protection part (2); the four inner protection parts (2) are arranged in the outer protection part (3); the cable core (1) comprises a copper core (101) and a polyethylene sheath (102); the copper core (101) is arranged in the polyethylene sheath (102); the inner protection part (2) comprises an XLPE layer (201) and an inner protection shell (202); the XLPE layer (201) is arranged outside the cable core (1); an inner protective shell (202) is arranged outside the XLPE layer (201); the middle parts of the plurality of inner protection parts (2) are provided with limit blocks (203); an isolated flame-retardant area (204) is arranged between the two inner protective parts (2); a flame retardant (205) is arranged in the isolated flame-retardant zone (204); the outer protective part (3) comprises an outer protective layer (301), a metal protective layer (302), a mineral protective layer (303) and a flame-retardant reinforcing layer (304); a metal protective layer (302) is arranged in the outer protective part (3); limiting lugs (305) are arranged on the periphery of the inner wall of the metal protective layer (302); a flame retardant (205) is arranged in the limiting lug (305); a mineral protection layer (303) is arranged between the two limit lugs (305); and a flame-retardant enhancement layer (304) is arranged in the mineral protection layer (303).

2. A high insulation fireproof cable according to claim 1, wherein: the inner protective shell (202) is made of ceramic silicon rubber.

3. A high insulation fireproof cable according to claim 1, wherein: the flame retardant (205) adopts magnesium oxide powder.

4. A high insulation fireproof cable according to claim 1, wherein: the flame-retardant enhancement layer (304) is made of tetrafluoroethylene.