CN218730052U

CN218730052U - Flame-retardant heat-insulation cable

Info

Publication number: CN218730052U
Application number: CN202222038825.5U
Authority: CN
Inventors: 曾云昌; 邹永清
Original assignee: Chengdu Licheng Cable Co ltd
Current assignee: Chengdu Licheng Cable Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2023-03-24
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a fire-retardant thermal-insulated cable, including cable core and rubber tube, the peripheral parcel of cable core has the insulating layer, and is provided with the insulating layer outside the insulating layer, the moisture absorption layer has been woven in the insulating layer outside, and is provided with the rubber tube outside the moisture absorption layer, the cavity has been seted up in the insulating layer wall, and the cavity intussuseption is filled with the red phosphorus fire retardant. The utility model relates to a fire-retardant heat-proof cable, the cavity can draw in red phosphorus fire retardant in together to when meetting naked light, red phosphorus fire retardant can make this cable have good fire behaviour, and, red phosphorus fire retardant can absorb the partial heat that the burning was emitted when fire-retardant, thereby reduces the heat of transmitting to on the cable core, in order to guarantee the security that this cable used, is fit for being extensively promoted and used.

Description

Flame-retardant heat-insulation cable

Technical Field

The utility model relates to the technical field of cables, in particular to fire-retardant thermal-insulated cable.

Background

Electric power is an indispensable energy source for industrial development, and a cable is a device for transmitting electric power, and is required to have certain flame retardant and heat insulating properties when applied to equipment such as steel plants, smelting plants, glass plants, fire fighting equipment and the like.

Patent application No. 201520575731.9 discloses a fire-retardant high temperature heat-insulating cable, constitute the isolation layer around the covering through wrapping outward at the conductor, and crowded package inorganic mineral again around the package insulating layer as strengthening the insulating layer behind the main line core stranding for the cable has good heat-proof quality, when using in high temperature place, the temperature on cable surface is very low, and the high temperature of external environment can't reach the conductor and can make its current-carrying capacity greatly increased, and the production investment is few, simple process.

However, when the flame-retardant part of the cable is used for flame retardance, heat generated during combustion cannot be isolated, and the flame-retardant part cannot be folded at one position, so that the flame retardance of the cable is affected.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a flame-retardant and heat-insulating cable, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flame-retardant heat-insulation cable comprises a cable core and a rubber tube, wherein an insulation layer wraps the periphery of the cable core, a heat insulation layer is arranged on the outer side of the insulation layer, a moisture absorption layer is woven on the outer side of the heat insulation layer, the rubber tube is arranged on the outer side of the moisture absorption layer, a cavity is formed in the wall of the heat insulation layer, and a red phosphorus flame retardant is filled in the cavity; the cavity can collect the red phosphorus flame retardant together, so that the cable has good flame retardant performance when exposed to open fire.

Furthermore, two sides of the cable core are connected with inserting type wire connectors, the back parts of the inserting type wire connectors are connected with the rubber tube in a gluing mode, one ends of the inserting type wire connectors are provided with metal shaping hoses through screws, and the metal shaping hoses are sleeved on the periphery of the rubber tube; the metal shaping hose can rotate the bending angle of the cable connection part, so that the cable can be prevented from cracking due to the fact that the bending angle is too large.

Furthermore, a polytetrafluoroethylene waterproof layer is filled between the moisture absorption layer and the rubber tube, and the moisture absorption layer is made of ramie fibers.

Furthermore, the heat-insulating layer is made of rock wool, and the red phosphorus flame retardant is uniformly distributed in a cavity formed in the heat-insulating layer.

Furthermore, the insulating layer is made of polypropylene, and the inner wall of the insulating layer is attached to the cable core.

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

the cavity can draw in red phosphorus flame retardant in together to when meetting open fire, red phosphorus flame retardant can make this cable have good fire behaviour, and, red phosphorus flame retardant can absorb the partial heat that the burning was emitted when fire-retardant, thereby reduces the heat that transmits to the cable core, in order to guarantee the security that this cable used.

Drawings

Fig. 1 is the utility model relates to an overall structure schematic diagram of fire-retardant thermal-insulated cable.

Fig. 2 is the schematic view of the cross-sectional structure of a flame-retardant and heat-insulating cable of the present invention.

Fig. 3 is the utility model relates to a fire-retardant insulating layer section structure schematic diagram of thermal-insulated cable.

In the figure: 1. a cable core; 2. a rubber tube; 3. a red phosphorus flame retardant; 4. a thermal insulation layer; 5. a moisture-absorbing layer; 6. a waterproof layer; 7. an insulating layer; 8. a cavity; 9. a plug-in wire connector; 10. A metal shaping hose.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1, 2 and 3, a flame-retardant heat-insulation cable comprises a cable core 1 and a rubber tube 2, an insulating layer 7 wraps the periphery of the cable core 1, a heat-insulation layer 4 is arranged on the outer side of the insulating layer 7, a moisture absorption layer 5 is woven on the outer side of the heat-insulation layer 4, the rubber tube 2 is arranged on the outer side of the moisture absorption layer 5, a cavity 8 is formed in the wall of the heat-insulation layer 4, and a red phosphorus flame retardant 3 is filled in the cavity 8.

Wherein, 1 both sides of cable core are connected with and insert formula wire connector 9, and insert formula wire connector 9 back and rubber tube 2 veneer connection, insert formula wire connector 9 one end and pass through screw installation metal forming hose 10, and metal forming hose 10 suit is in the periphery of rubber tube 2.

In this embodiment, as shown in fig. 1, the plug-in wire connector 9 can be directly inserted into the external corresponding mechanism, so that the cable can be conveniently used by people, and the people can change the shape of the metal shaping hose 10, thereby ensuring that the bending angle of the metal shaping hose 10 is not in a passageway, and further ensuring that the bending angle of the cable and the part of the plug-in wire connector 9 connected with the cable is not too large, so as to prevent the connecting part of the cable from cracking due to too large bending angle for a long time.

Wherein, a polytetrafluoroethylene waterproof layer 6 is filled between the moisture absorption layer 5 and the rubber tube 2, and the moisture absorption layer 5 is made of ramie fibers.

In this embodiment, as shown in fig. 2, the polytetrafluoroethylene has a good waterproof property, so that the cable has a good waterproof property, and the ramie fibers have a good moisture absorption function, so that the penetrated moisture can be absorbed.

The heat insulation layer 4 is made of rock wool, and the red phosphorus flame retardant 3 is uniformly distributed in a cavity 8 formed in the heat insulation layer 4.

As shown in figure 2 in this embodiment, the rock wool has good heat-proof quality to reduce the speed of outside heat transfer to on the cable core 1, and, because the whole cavity 8 of even packing of red phosphorus flame retardant 3, the flame retardant efficiency of each position of this cable is unanimous.

The insulating layer 7 is made of polypropylene, and the inner wall of the insulating layer 7 is attached to the cable core 1.

In this embodiment, as shown in fig. 2, polypropylene has good insulating property and can protect the cable core 1.

It should be noted that, the utility model relates to a fire-retardant heat-insulating cable, rubber tube 2 is located the outside to can play good protective properties to this electric wire, and, moisture absorption layer 5 can be with seeing through the moisture absorption that rubber tube 2 and waterproof layer 6 oozed in, and insulating layer 4 can prevent outside high temperature transmission to cable core 1 on, and cavity 8 can draw in red phosphorus fire retardant in together, thereby when meetting open fire, red phosphorus fire retardant can make this cable have good flame retardant efficiency.

Claims

1. The utility model provides a fire-retardant thermal-insulated cable, includes cable core (1) and rubber tube (2), its characterized in that: the cable core (1) periphery parcel has insulating layer (7), and the insulating layer (7) outside is provided with insulating layer (4), moisture absorption layer (5) have been woven in insulating layer (4) outside, and the moisture absorption layer (5) outside is provided with rubber tube (2), cavity (8) have been seted up in insulating layer (4) wall, and cavity (8) intussuseption is filled with red phosphorus fire retardant (3).

2. A flame retardant and thermally insulating cable according to claim 1, characterized in that: the cable comprises a cable core (1), wherein two sides of the cable core (1) are connected with inserting type wire connectors (9), the back parts of the inserting type wire connectors (9) are connected with a rubber pipe (2) in a gluing mode, one ends of the inserting type wire connectors (9) are provided with metal shaping hoses (10) through screws, and the metal shaping hoses (10) are sleeved on the periphery of the rubber pipe (2).

3. A flame retardant and thermally insulating cable according to claim 1, characterized in that: a polytetrafluoroethylene waterproof layer (6) is filled between the moisture absorption layer (5) and the rubber tube (2), and the moisture absorption layer (5) is made of ramie fibers.

4. A flame retardant and thermally insulating cable according to claim 1, characterized in that: the heat insulation layer (4) is made of rock wool, and the red phosphorus flame retardant (3) is uniformly distributed in a cavity (8) formed in the heat insulation layer (4).

5. A flame retardant and thermally insulating cable according to claim 1, characterized in that: the insulating layer (7) is made of polypropylene, and the inner wall of the insulating layer (7) is attached to the cable core (1).