CN213211778U

CN213211778U - Environment-friendly nonmetal sheath flexible fireproof cable

Info

Publication number: CN213211778U
Application number: CN202022638253.5U
Authority: CN
Inventors: 许宏彬; 许磊
Original assignee: Hefei Wuhua Cable Co ltd
Current assignee: Hefei Wuhua Cable Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-05-14
Anticipated expiration: 2030-11-13

Abstract

The application relates to an environment-friendly nonmetal sheath flexible fireproof cable, which comprises an outer sheath, a support bar arranged in the outer sheath, a plurality of inner cores arranged around the support bar, an inner partition layer covering the inner cores, a plurality of separation strips fixed between the inner partition layer and the support bar, and a flame-retardant core arranged between the inner partition layer and the outer sheath; the supporting strips, the inner interlayer and the dividing strips are all made of silicon rubber; the inner cores are uniformly distributed around the supporting bars, and the division belts are respectively arranged between the adjacent inner cores; the inner core comprises a copper conductor and an insulating sleeve coated on the copper conductor; the outer sheath is made of fluororubber. This application has the effect of the wiring installation of convenient cable.

Description

Environment-friendly nonmetal sheath flexible fireproof cable

Technical Field

The application relates to the field of cables, in particular to an environment-friendly nonmetal sheath flexible fireproof cable.

Background

At present, with the enhancement of awareness of environmental protection and fire safety of people, the application field of fireproof cables is gradually expanded, and the application field of the fireproof cables is expanded from the original offshore oil platform to occasions with higher requirements on fireproof and fireproof levels, such as aviation, spaceflight, navigation, subways, tunnels, commercial buildings, hospitals, dance halls, metallurgy, chemical engineering, power plants and the like.

However, many existing fireproof cable outer sheaths simply adopt mica tapes to wrap copper cores, and then are sleeved with metal sheaths, so that the cables are protected. However, the cable has poor flexibility and is difficult to bend, so that the cable is inconvenient to wire and install in use.

With respect to the related art in the above, the inventors consider that there is a drawback that the wiring installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the wiring installation of the cable, the application provides an environment-friendly nonmetal sheath flexible fireproof cable.

The application provides a flexible fireproof cable of nonmetal sheath of environment-friendly adopts following technical scheme:

an environment-friendly flexible fireproof cable with a nonmetal protective layer comprises an outer sheath, a support bar arranged in the outer sheath, a plurality of inner cores arranged around the support bar, an inner partition layer covering the inner cores, a plurality of partition belts fixed between the inner partition layer and the support bar, and a flame-retardant core arranged between the inner partition layer and the outer sheath; the supporting strips, the inner interlayer and the dividing strips are all made of silicon rubber; the inner cores are uniformly distributed around the supporting bars, and the division belts are respectively arranged between the adjacent inner cores; the inner core comprises a copper conductor and an insulating sleeve coated on the copper conductor; the outer sheath is made of fluororubber.

By adopting the above technical scheme, an inner core for transmitting electric power sets up in oversheath and interior interlayer, the oversheath is made by viton, good high temperature resistance has, corrosion resisting property and pliability, make the inner core effectively protected, and the fire behavior of cable has also been guaranteed in setting up of flame retardant core, in addition, the inner core is separated by the median of making by silicon rubber, thereby prevent to ignite each other between the inner core, so the oversheath of this cable, interior interlayer, the setting of support bar, make the cable can be crooked, be applicable to the installation site that needs crooked cable, be convenient for the wiring installation of cable.

Preferably, the insulating sheath is made of cross-linked polyethylene.

By adopting the technical scheme, the insulating sleeve is made of cross-linked polyethylene, so that the insulating sleeve is excellent in insulating property and good in corrosion resistance, and the insulating property of the inner core is ensured.

Preferably, the flame-retardant core comprises a fireproof sleeve made of silicon rubber and a flame-retardant filler filled into the fireproof sleeve; the flame retardant filler includes aluminum hydroxide particles.

Through adopting above-mentioned technical scheme, the fire prevention cover is made by silicon rubber, and high temperature resistance is good, and the setting of fire-retardant filler for can produce a large amount of crystal water when meeting fire in the fire prevention core, absorb a large amount of heats, and fire behavior is superior, has effectively prevented that the inner core from being ignited.

Preferably, the supporting bar is hollow, and a metal wire is arranged in the supporting bar.

Through adopting above-mentioned technical scheme, be equipped with the wire in the support bar, promoted the ductility of cable.

Preferably, two sides of the separation strip are integrally formed with the support strip and the inner partition layer respectively.

Through adopting above-mentioned technical scheme, the division bar respectively with support bar and interior interlayer integrated into one piece, the manufacturing of the support bar of being convenient for, interior interlayer and division bar.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the inner core for transmitting electric power is arranged in the outer sheath and the inner interlayer, so that the inner core is effectively protected, the flame-retardant core is arranged to ensure the fireproof performance of the cable, in addition, the inner core is separated by the partition strip made of silicon rubber, so that the inner core is prevented from being ignited mutually, the outer sheath, the inner interlayer and the support bar of the cable are arranged, the cable can be bent, and the cable bending device is suitable for installation places where the cable needs to be bent, and is convenient for wiring and installation of the cable.

Drawings

FIG. 1 is a schematic structural diagram of an environmentally-friendly non-metal sheath flexible fireproof cable according to an embodiment of the present application.

Description of reference numerals: 1. an outer sheath; 2. a supporting strip; 21. a metal wire; 3. an inner interlayer; 4. a separator; 5. an inner core; 51. a copper conductor; 52. an insulating sleeve; 6. a flame retardant core; 61. a fireproof sleeve; 62. a flame retardant filler.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses flexible fireproof cable of environment-friendly nonmetal sheath. Referring to fig. 1, the environment-friendly non-metal sheath flexible fireproof cable includes an outer sheath 1, a support bar 2, an inner interlayer 3, a separation strip 4, an inner core 5 and a flame retardant core 6. The outer sheath 1 is in a circular sleeve shape and is made of fluororubber, and the section of the outer sheath 1 is in a circular ring shape. The cross-section of support bar 2 is the ring shape, and its internal diameter is one third of external diameter, and support bar 2 is made by crosslinked polyethylene, and support bar 2 sets up in oversheath 1 and extends along the extending direction of oversheath 1, and in addition, support bar 2 sets up in the center of oversheath 1. The support bar 2 is internally provided with a metal wire 21, the metal wire 21 is a steel wire, and the metal wire 21 is fixed with the inner wall of the support bar 2.

Referring to fig. 1, the inner spacer 3 is in a sleeve shape, the inner spacer 3 is disposed in the outer sheath 1 and extends along the extending direction of the outer sheath 1, and the supporting bars 2 are disposed in the inner spacer 3. The dividing strips 4 are rectangular strips, are arranged in the inner interlayer 3 and extend along the extending direction of the inner interlayer 3, one side of each dividing strip 4 is fixedly connected with the inner wall of the inner interlayer 3, the other side of each dividing strip is fixedly connected with the support bars 2, the dividing strips 4 are three in number, and the three dividing strips 4 are uniformly distributed around the axes of the support bars 2, so that three built-in chambers are formed in the space between the support bars 2 and the inner interlayer 3. The inner partition layer 3, the separation strip 4 and the support strips 2 are integrally formed, and the inner partition layer 3 and the separation strip 4 are made of silicon rubber. The silicon rubber has good electrical insulation performance and high temperature resistance, and is favorable for preventing external flame from invading the components in the inner partition layer 3.

Referring to fig. 1, the inner core 5 includes an insulating sleeve 52 and a copper conductor 51 disposed in the insulating sleeve 52, the copper conductor 51 is formed by twisting copper wires, the copper conductor 51 is abutted against the inner wall of the insulating sleeve 52, and the insulating sleeve 52 is made of cross-linked polyethylene. The number of the inner cores 5 is three, the three inner cores 5 are respectively arranged in three built-in cavities formed in the inner interlayer 3, and the inner cores 5 extend along the extension direction of the outer sheath 1. In addition, the outer wall of the insulating sleeve 52 of the inner core 5 is respectively abutted against the inner walls of the supporting bars 2 and the inner partition layers 3, and due to the arrangement of the width of the separation belt 4, the inner partition layers 3 are contracted between the adjacent inner cores 5, so that the cross section of each inner partition layer 3 is clover-shaped. The flame-retardant core 6 comprises a fireproof sleeve 61 made of silicon rubber and a flame-retardant filler 62 filled into the fireproof sleeve 61, the cross section of the fireproof sleeve 61 is circular, the fireproof sleeve 61 is arranged in a gap formed between the inner interlayer 3 and the outer sheath 1, and the fireproof sleeve 61 extends along the extension direction of the outer sheath 1. The outer wall of the fireproof sleeve 61 is abutted against the inner wall of the outer sheath 1 and the outer wall of the inner interlayer 3, and the plane where the axis of the fireproof sleeve 61 is located and the axis of the support bar 2 penetrates through and equally divides the division strip 4. The flame-retardant filler 62 is composed of aluminum hydroxide particles, and the aluminum hydroxide particles generate a large amount of crystal water when encountering fire, absorb a large amount of heat, have excellent fireproof performance, so that the flame-retardant core 6 has good flame-retardant performance, and the inner core 5 is effectively prevented from being ignited. The flame-retardant cores 6 are also provided with three, and the three flame-retardant cores 6 respectively correspond to the three separation strips 4.

The implementation principle of the flexible fireproof cable with the environment-friendly non-metal sheath in the embodiment of the application is as follows: the inner core 5 used for transmitting electric power is arranged in the outer sheath 1 and the inner interlayer 3, the outer sheath 1 is made of fluororubber, and has good high temperature resistance, corrosion resistance and flexibility, so that the inner core 5 is effectively protected, the fireproof performance of the cable is also ensured by the arrangement of the flame-retardant core 6, in addition, the inner core 5 is separated by the separation belt 4 made of silicon rubber, and the inner cores 5 are prevented from being ignited with each other, so the outer sheath 1, the inner interlayer 3 and the support bar 2 of the cable are arranged, the cable can be bent, the cable bending device is suitable for installation places where the cable needs to be bent, and the wiring installation of the cable is facilitated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a flexible fireproof cable of nonmetal sheath of environment-friendly which characterized in that: the flame-retardant cable comprises an outer sheath (1), a support bar (2) arranged in the outer sheath (1), a plurality of inner cores (5) arranged around the support bar (2), an inner partition layer (3) covering the inner cores (5), a plurality of partition strips (4) fixed between the inner partition layer (3) and the support bar (2), and a flame-retardant core (6) arranged between the inner partition layer (3) and the outer sheath (1); the supporting strips (2), the inner interlayer (3) and the dividing strips (4) are all made of silicon rubber; the inner cores (5) are uniformly distributed around the supporting bars (2), and the division belts (4) are respectively arranged between the adjacent inner cores (5); the inner core (5) comprises a copper conductor (51) and an insulating sleeve (52) coated on the copper conductor (51); the outer sheath (1) is made of fluororubber.

2. The environment-friendly flexible fireproof cable with the non-metal sheath as claimed in claim 1, wherein: the insulating sheath (52) is made of cross-linked polyethylene.

3. The environment-friendly flexible fireproof cable with the non-metal sheath as claimed in claim 1, wherein: the flame-retardant core (6) comprises a fireproof sleeve (61) made of silicon rubber and a flame-retardant filler (62) filled into the fireproof sleeve (61); the flame retardant filler (62) includes aluminum hydroxide particles.

4. The environment-friendly flexible fireproof cable with the non-metal sheath as claimed in claim 1, wherein: the inside cavity of support bar (2), just be equipped with wire (21) in support bar (2).

5. The environment-friendly flexible fireproof cable with the non-metal sheath as claimed in claim 1, wherein: and two sides of the division belt (4) are respectively integrally formed with the support bar (2) and the inner interlayer (3).