CN210516275U

CN210516275U - Fire-resistant dampproofing cable for subway

Info

Publication number: CN210516275U
Application number: CN201921599823.5U
Authority: CN
Inventors: 章国榜; 段国权; 施晓宝
Original assignee: WUHAN HONGLIAN WIRE & CABLE CO LTD
Current assignee: WUHAN HONGLIAN WIRE & CABLE CO LTD
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-12
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a fire-resistant moisture-proof subway cable, which belongs to the field of cables and comprises an outer sheath, wherein a moisture-proof layer is arranged in the outer sheath, a fire-resistant layer is arranged in the moisture-proof layer, a shielding layer is arranged in the fire-resistant layer, a protective layer is arranged in the shielding layer, a plurality of support bars are arranged between the protective layer and the shielding layer, a first filling layer is filled between the protective layer and the shielding layer, a plurality of conductors are arranged in the protective layer, a conductor sleeve is arranged outside each conductor, and a second filling layer is filled between the conductor sleeve and the protective layer; the utility model relates to a novelty, the effectual fire-resistant moisture resistance who improves the cable, the crushing resistance is good, has avoided damaging in transportation and the installation, simple structure, and convenient to use is worth promoting.

Description

Fire-resistant dampproofing cable for subway

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to cable for fire-resistant dampproofing subway.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation.

Most of the existing cables for the subway have poor fire resistance and are easy to catch fire; the moisture-proof effect is poor, and the corrosion and aging of the cable are easily caused; and the pressure resistance is not strong, and the damage is easy to occur in the transportation and installation processes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-resistant dampproofing cable for subway to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-resistant dampproofing cable for subway, includes the oversheath, be provided with the dampproof course in the oversheath, the inside flame retardant coating that is provided with of dampproof course, the inside shielding layer that is provided with of flame retardant coating, the inside of shielding layer is provided with the protective layer, is provided with many support bars between protective layer and the shielding layer, and packs between protective layer and the shielding layer and have filling layer one, is provided with many conductors in the protective layer, and the outside of every conductor is provided with the conductor cover, and packs between conductor cover and the protective layer and have.

Adopt above-mentioned scheme, through being provided with the dampproof course, can prevent that steam from corroding the conductor and influencing the normal operating of circuit, protected the security of cable, improved the holistic fire resistance of cable through the flame retardant coating, protective layer and support bar have improved the compressive capacity of cable, the better mechanicalness that has kept the cable, the transmission performance that external signal influence cable can be avoided to the shielding layer, simple structure, convenient to use.

As a preferred embodiment, the outer part of the outer sheath is sprayed with a wear resistant coating.

By adopting the scheme, the wear-resistant coating is sprayed on the outer part of the outer sheath, so that the wear-resistant performance of the cable is improved, and the integrity of the cable is ensured in the installation or transportation process.

In a preferred embodiment, the moisture-proof layer is formed by wrapping a band-shaped moisture-proof material around the periphery of the fire-proof layer.

By adopting the scheme, the moisture-proof layer can prevent water vapor from corroding the conductor to influence the normal operation of the circuit, and the safety of the cable is protected.

As a preferred embodiment, the refractory layer is made of ceramized rubber.

By adopting the scheme, the fire-resistant layer improves the overall fire resistance of the cable, improves the fire resistance of the cable and prolongs the service life of the cable.

In a preferred embodiment, the shielding layer is braided by a tinned copper wire, and the braiding density of the shielding layer is greater than 95%.

By adopting the scheme, the shielding layer can avoid the influence of external signals on the transmission performance of the cable.

As a preferred embodiment, the cross-sectional view of the protective layer is a regular hexagon structure, six support bars are provided, and the six support bars are respectively located at six corners of the protective layer.

By adopting the scheme, the protective layer in the shape of a regular hexagon and the supporting strips arranged outside the protective layer improve the compression resistance of the cable, and better keep the mechanical property of the cable.

In a preferred embodiment, the first filling layer and the second filling layer are filled with water-blocking polyester cotton yarn and rock wool ropes.

By adopting the scheme, the physical performance of the cable is improved through the first filling layer and the second filling layer, and the waterproof performance is further improved.

Compared with the prior art, the beneficial effects of the utility model are that:

this fire-resistant dampproofing cable for subway has kept the mechanicalness of cable through setting up structures such as oversheath, dampproof course, flame retardant coating, shielding layer, protective layer, filling layer one and filling layer, has improved the fire-resistant humidity resistance of electricity federation, extension cable life is worth promoting.

Drawings

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

fig. 2 is a side view of the present invention.

In the figure: 1. an outer sheath; 2. a moisture barrier; 3. a refractory layer; 4. a shielding layer; 5. a protective layer; 6. filling a first layer; 7. a supporting strip; 8. a conductor; 9. a conductor sleeve; 10. and a second filling layer.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Referring to fig. 1-2, the utility model provides a fire-resistant and moisture-proof cable for subway, which comprises an outer sheath 1, wherein the outer part of the outer sheath 1 is coated with wear-resistant paint (see fig. 2); the wear-resistant coating is sprayed on the outer part of the outer sheath 1, so that the wear resistance of the cable is improved, and the integrity of the cable is ensured in the installation or transportation process.

A moisture-proof layer 2 is arranged in the outer sheath 1, a fire-resistant layer 3 is arranged in the moisture-proof layer 2, and the moisture-proof layer 2 is formed by wrapping a strip-shaped moisture-proof material on the periphery of the fire-resistant layer 3 (see figure 1); the moisture-proof layer 2 can prevent water vapor from corroding the conductor to influence the normal operation of the circuit, and the safety of the cable is protected.

A shielding layer 4 is arranged in the fire-resistant layer 3, and the fire-resistant layer 3 is made of ceramic rubber (see figure 1); the fire-resistant layer 3 improves the overall fire resistance of the cable, improves the fire resistance of the cable, and prolongs the service life of the cable.

A protective layer 5 is arranged inside the shielding layer 4, the shielding layer 4 is formed by weaving tinned copper wires, and the weaving density of the shielding layer 4 is more than 95% (see fig. 1); the shielding layer 4 can prevent external signals from influencing the transmission performance of the cable.

A plurality of support bars 7 are arranged between the protective layer 5 and the shielding layer 4, the cross section of the protective layer 5 is of a regular hexagon structure, six support bars 7 are arranged, and the six support bars 7 are respectively positioned at six corners of the protective layer 5 (see fig. 1); the protective layer 5 of regular hexagon to and the outside support bar of the protective layer 5 that sets up, improved the compressive property of cable, better the mechanicalness that has kept the cable.

A first filling layer 6 is filled between the protective layer 5 and the shielding layer 4, a plurality of conductors 8 are arranged in the protective layer 5, a conductor sleeve 9 is arranged outside each conductor 8, a second filling layer 10 is filled between the conductor sleeve 9 and the protective layer 5, and the first filling layer 6 and the second filling layer 10 are filled with water-blocking polyester cotton yarns and rock wool ropes (see fig. 1); through the first filling layer 6 and the second filling layer 10, the physical performance of the cable is improved, and the waterproof performance is further improved.

Through being provided with dampproof course 2, can prevent that steam from corroding the conductor and influencing the normal operating of circuit, the security of cable has been protected, the holistic fire behavior of cable has been improved through flame retardant coating 3, regular hexagon's protective layer 5, and the 5 outside support bars of protective layer that set up, the compressive property of cable has been improved, better mechanical property that has kept the cable, external signal influence cable's transmission performance can be avoided to shielding layer 4, filling layer one 6 and filling layer two 10 are filled for polyester cotton yarn and rock wool rope block water, the physical properties of cable has been improved, waterproof performance has further been improved, moreover, the steam generator is simple in structure, high durability and convenient use.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-resistant dampproofing cable for subway, includes oversheath (1), its characterized in that: be provided with dampproofing course (2) in oversheath (1), the inside flame retardant coating (3) that is provided with of dampproofing course (2), the inside shielding layer (4) that is provided with of flame retardant coating (3), the inside of shielding layer (4) is provided with protective layer (5), be provided with many support bars (7) between protective layer (5) and shielding layer (4), and it has filling layer (6) to fill between protective layer (5) and the shielding layer (4), be provided with many conductors (8) in protective layer (5), the outside of every conductor (8) is provided with conductor cover (9), and it has filling layer two (10) to fill between conductor cover (9) and protective layer (5).

2. The fire-resistant moisture-proof subway cable according to claim 1, wherein: and the outer part of the outer sheath (1) is sprayed with wear-resistant paint.

3. The fire-resistant moisture-proof subway cable according to claim 1, wherein: the dampproof layer (2) is formed at the periphery of flame retardant coating (3) by band-shaped dampproof material around the package.

4. The fire-resistant moisture-proof subway cable according to claim 1, wherein: the fire-resistant layer (3) is made of ceramic rubber.

5. The fire-resistant moisture-proof subway cable according to claim 1, wherein: the shielding layer (4) is formed by weaving tinned copper wires, and the weaving density of the shielding layer (4) is larger than 95%.

6. The fire-resistant moisture-proof subway cable according to claim 1, wherein: the cross-sectional view of protective layer (5) is regular hexagon structure, and support bar (7) are provided with six, and six support bar (7) are located six angles departments of protective layer (5) respectively.

7. The fire-resistant moisture-proof subway cable according to claim 1, wherein: the first filling layer (6) and the second filling layer (10) are filled with water-blocking polyester cotton yarns and rock wool ropes.