CN210467404U

CN210467404U - Fire-resistant cable

Info

Publication number: CN210467404U
Application number: CN201921882792.4U
Authority: CN
Inventors: 孙孝林; 孙五州; 马晓博; 孙林娜
Original assignee: Henan Hengsheng Tongda Wire And Cable Co Ltd
Current assignee: Henan Hengsheng Tongda Wire And Cable Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-05-05
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a fire-resistant cable, which comprises a cable inner core, an inner protective layer, an inner armor layer, a waterproof layer, an outer armor layer, a fireproof layer, a metal braid layer, an oil-resistant layer, an inner metal ring layer, a wave pressure relief layer, an outer metal ring layer and a protective layer from inside to outside in sequence; the cable inner core is multi-core and is coated by the inner protective layer; a plurality of convex blocks are uniformly arranged on the outer circumference of the inner protection layer, the inner armor layer is tightly attached to the convex blocks, and a gap is formed between the inner armor layer and the inner protection layer; a plurality of supporting blocks are uniformly arranged on the outer circumference of the waterproof layer, the outer armor layer is tightly attached to the supporting blocks, a gap is formed between the outer armor layer and the waterproof layer, and the gap is filled with water-absorbing materials. The utility model discloses it is fire-resistant strong, the flame retardant coating is not fragile moreover, and tensile strength is high, can also effectively avoid intaking simultaneously, arouses the incident.

Description

Fire-resistant cable

Technical Field

The utility model relates to a cable, concretely relates to fire resisting cable.

Background

A rope-like cable is formed by twisting several or groups of at least two conductors, each group being insulated from each other and usually twisted around a center, with a highly insulating covering the entire outside. The cable has the characteristics of internal electrification and external insulation.

The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

When the cable is applied to different places, the personalized requirements on the cable are different, for example, when the cable is used in a water environment (submarine cable), the waterproof property and the pressure resistance are good, when the cable is used in a flammable and explosive environment, the fire resistance of the cable is good, and when the cable is applied to a place with strong corrosivity, the corrosion resistance is good. Therefore, fire-resistant cables are produced. The existing fire-resistant cable is also various in types, but a fire-resistant material layer is basically added simply, although the fire-resistant mode can play a fire-resistant role, the fire resistance is poor, and the added fire-resistant material layer is easily damaged in the actual use process of the cable, so that the fire resistance is greatly reduced.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a fire resisting cable, this cable fire resistance is strong, and the flame retardant coating is not fragile moreover, and tensile strength is high, can also effectively avoid intaking simultaneously, arouses the incident.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is:

a fire resistant cable, characterized by: the cable comprises a cable inner core, an inner protective layer, an inner armor layer, a waterproof layer, an outer armor layer, a fireproof layer, a metal woven belt layer, an oil-resistant layer, an inner metal ring layer, a wave pressure relief layer, an outer metal ring layer and a protective layer from inside to outside in sequence; the cable inner core is multi-core and is coated by the inner protective layer; a plurality of convex blocks are uniformly arranged on the outer circumference of the inner protection layer, the inner armor layer is tightly attached to the convex blocks, and a gap is formed between the inner armor layer and the inner protection layer; a plurality of supporting blocks are uniformly arranged on the outer circumference of the waterproof layer, the outer armor layer is tightly attached to the supporting blocks, a gap is formed between the outer armor layer and the waterproof layer, and water absorbing materials are filled in the gap; the fire-proof layer is tightly attached to the outer armor layer, the metal woven belt layer is tightly attached to the fire-proof layer, the oil-proof layer is tightly attached to the metal woven belt layer, the inner metal ring layer is tightly attached to the oil-proof layer, the outer metal ring layer tightly presses the wave pressure relief layer to the inner metal ring layer, and the protective layer is tightly attached to the outer metal ring layer.

Preferably, the inner protective layer is a polyvinyl chloride layer.

Preferably, the inner armor layer is a steel-aluminum braided belt.

Preferably, the waterproof layer is ethylene propylene diene monomer.

Preferably, the water absorbing material is a cross-linked light ethyl cellulose grafted acrylamide polymer.

Preferably, the outer armor layer is an aluminum strip armor layer.

Preferably, the fireproof layer is a fireproof fiber layer, preferably a basalt fiber layer.

Preferably, the metal woven belt layer is a woven belt formed by weaving metal wires, and the metal wires are preferably galvanized steel wires.

Preferably, the oil-resistant layer is made of nitrile rubber.

Preferably, the inner metal ring layer is a ring structure made of stainless steel.

Preferably, the wave pressure relief layer is an annular structure layer formed by connecting a plurality of elastic sheets with bent middle parts end to end.

Preferably, the outer metal ring layer is a ring structure made of stainless steel.

Preferably, the protective layer is made of the existing outer sheath material, and preferably, the low-smoke halogen-free outer sheath material is used.

The utility model discloses for prior art have following beneficial effect:

the utility model comprises a cable inner core, an inner protective layer, an inner armor layer, a waterproof layer, an outer armor layer, a fireproof layer, a metal braid layer, an oil-resistant layer, an inner metal ring layer, a wave pressure relief layer, an outer metal ring layer and a protective layer from inside to outside in sequence; the cable inner core is multi-core and is coated by the inner protective layer; a plurality of convex blocks are uniformly arranged on the outer circumference of the inner protection layer, the inner armor layer is tightly attached to the convex blocks, and a gap is formed between the inner armor layer and the inner protection layer; a plurality of supporting blocks are uniformly arranged on the outer circumference of the waterproof layer, the outer armor layer is tightly attached to the supporting blocks, a gap is formed between the outer armor layer and the waterproof layer, and water absorbing materials are filled in the gap; the fire-proof layer is tightly attached to the outer armor layer, the metal woven belt layer is tightly attached to the fire-proof layer, the oil-proof layer is tightly attached to the metal woven belt layer, the inner metal ring layer is tightly attached to the oil-proof layer, the outer metal ring layer tightly presses the wave pressure relief layer to the inner metal ring layer, and the protective layer is tightly attached to the outer metal ring layer. The utility model discloses a reach fire-resistant purpose, accomplish through setting up the flame retardant coating, its difference is that fine protection has been carried out to the flame retardant coating, avoid the cable to cause the damage of flame retardant coating when using, the while has increased inlayer armor, outer armor, inlayer metal ring layer and outer metal ring layer, not only can show the intensity that improves the cable, and can play fine fire prevention effect, wave pressure relief layer has still been increased simultaneously, fine fire prevention effect has been played when bearing the outside pressure of receiving of cable. In addition, a waterproof layer and a water absorbing material are added, so that a good waterproof effect is achieved, and the water absorbing material also has a buffering effect. The convex blocks on the inner protection layer are arranged, and the formed gap provides a buffer space and a deformation space of an outer layer material, so that the pressure of the inner core of the cable is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the attached drawing, 1, a cable inner core, 2, an inner protective layer, 3, an inner armor layer, 4, a waterproof layer, 5, an outer armor layer, 6, a fireproof layer, 7, a metal band layer, 8, an oil-resistant layer, 9, an inner metal ring layer, 10, a wave pressure relief layer, 11, an outer metal ring layer, 12, a protective layer, 13, a convex block, 14, a gap, 15, a supporting block, 16 and a waterproof material.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

The utility model discloses solve the fire resistance problem of current cable, current cable is for waterproof, and simple the setting one deck refractory material layer that only can play certain fire-resistant effect like this, but in the use of reality, the refractory material layer damages very easily, loses fire-resistant effect. But also has poor fire-resistant effect, poor tensile strength and compressive strength of the whole cable and easy damage.

The inventors have devised the following cable in view of the above drawbacks. The main core carries out fine protection to the other side flame retardant coating when setting up the flame retardant coating, sets up in addition that inlayer metal ring layer and outer metal ring layer and wave pressure release layer protect the cable when playing the fire prevention effect.

The utility model discloses a concrete structure as follows:

the cable comprises an inner core 1 of the cable, an inner protective layer 2, an inner armor layer 3, a waterproof layer 4, an outer armor layer 5, a fireproof layer 6, a metal band layer 7, an oil-resistant layer 8, an inner metal ring layer 9, a wave pressure relief layer 10, an outer metal ring layer 11 and a protective layer 12 from inside to outside in sequence; the inner core of the cable is multi-core and is coated by an inner protective layer 2 (the inner protective layer plays roles of insulation and inner core protection); a plurality of convex blocks 13 are uniformly arranged on the outer circumference of the inner protection layer 2, the inner armor layer 3 is tightly attached to the convex blocks 13, and a gap 14 is formed between the inner armor layer and the inner protection layer (gaps between the protrusions are formed by the arrangement of the protrusions, and the gaps have the functions of providing a buffer space, improving the toughness of the electric wire, improving a waterproof space, collecting water by the gaps even if water enters the gaps, preventing the water from entering the inner protection layer, and providing a deformation space of an outer material, so that the deformation caused by thermal expansion and cold contraction of the material can be effectively prevented); a plurality of supporting blocks 15 are uniformly arranged on the outer circumference of the waterproof layer 4 (a supporting space gap is formed by the supporting function of the supporting blocks), the outer armor layer 5 is tightly attached to the supporting blocks 15, a gap is formed between the outer armor layer 5 and the waterproof layer 4, and the gap is filled with a water absorbing material 16 (the filled water absorbing material can play a role in absorbing water and can play a role in buffering at the same time); the fire-proof layer 6 is tightly attached to the outer armor layer 5, the metal woven belt layer 7 is tightly attached to the fire-proof layer 6, the oil-proof layer 8 is tightly attached to the metal woven belt layer 7, the inner metal ring layer 9 is tightly attached to the oil-proof layer 8, the outer metal ring layer 11 compresses the wave pressure relief layer 10 on the inner metal ring layer 9, and the protective layer 12 is tightly attached to the outer metal ring layer 11.

Preferably, the inner protective layer is a polyvinyl chloride layer.

Preferably, the inner armor layer is a steel-aluminum braided belt.

Preferably, the waterproof layer is ethylene propylene diene monomer.

Preferably, the outer armor layer is an aluminum strip armor layer.

Preferably, the fire-proof layer is a fire-proof fiber layer, preferably a basalt fiber layer (basalt fiber has excellent fire resistance).

Preferably, the metal woven belt layer is a woven belt formed by weaving metal wires, and the metal wires are preferably galvanized steel wires (high in strength and fire resistance).

Preferably, the oil-resistant layer is made of nitrile rubber.

Preferably, the inner metal ring layer is a ring structure made of stainless steel (high strength and good compression resistance).

Preferably, the wave pressure release layer is an annular structure layer formed by connecting a plurality of elastic sheets bent in the middle part end to end (the pressure release layer can play a role in pressure release, well protects an inner layer material, and can play a certain fireproof role).

Preferably, the outer metal ring layer is a ring structure made of stainless steel (high strength and good compression resistance).

Preferably, the protective layer only needs to be made of the existing outer sheath material, and preferably is made of the outer sheath material with low smoke and zero halogen (when the protective layer is burnt, smoke is small, odor is not large, and environmental pollution is avoided).

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A fire resistant cable, characterized by: the cable comprises a cable inner core, an inner protective layer, an inner armor layer, a waterproof layer, an outer armor layer, a fireproof layer, a metal woven belt layer, an oil-resistant layer, an inner metal ring layer, a wave pressure relief layer, an outer metal ring layer and a protective layer from inside to outside in sequence; the cable inner core is multi-core and is coated by the inner protective layer; a plurality of convex blocks are uniformly arranged on the outer circumference of the inner protection layer, the inner armor layer is tightly attached to the convex blocks, and a gap is formed between the inner armor layer and the inner protection layer; a plurality of supporting blocks are uniformly arranged on the outer circumference of the waterproof layer, the outer armor layer is tightly attached to the supporting blocks, a gap is formed between the outer armor layer and the waterproof layer, and water absorbing materials are filled in the gap; the fire-proof layer is tightly attached to the outer armor layer, the metal woven belt layer is tightly attached to the fire-proof layer, the oil-proof layer is tightly attached to the metal woven belt layer, the inner metal ring layer is tightly attached to the oil-proof layer, the outer metal ring layer tightly presses the wave pressure relief layer to the inner metal ring layer, and the protective layer is tightly attached to the outer metal ring layer.

2. The fire resistant cable of claim 1, wherein: the inner protective layer is a polyvinyl chloride layer.

3. The fire resistant cable of claim 1, wherein: the inner armor layer is a steel-aluminum braided belt.

4. The fire resistant cable of claim 1, wherein: the waterproof layer is ethylene propylene diene monomer.

5. The fire resistant cable of claim 1, wherein: the water absorbing material is a cross-linked light ethyl cellulose grafted acrylamide polymer.

6. The fire resistant cable of claim 1, wherein: the outer armor layer is an aluminum tape armor layer.

7. The fire resistant cable of claim 1, wherein: the fireproof layer is a fireproof fiber layer.

8. The fire resistant cable of claim 1, wherein: the metal woven belt layer is a woven belt formed by weaving metal wires.

9. The fire resistant cable of claim 1, wherein: the wave pressure relief layer is an annular structure layer formed by connecting a plurality of elastic sheets with bent middle parts end to end.