CN210896737U

CN210896737U - Novel fire-resistant cable

Info

Publication number: CN210896737U
Application number: CN201921903115.6U
Authority: CN
Inventors: 马吉贺; 蒋德禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-06-30
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a novel fire resisting cable, including fire resisting outer wall, fire-retardant groove, covering line layer, cable, supporting layer, stay wire layer, division circle and inoxidizing coating, be equipped with fire-retardant groove between fire resisting outer wall inner wall and the inoxidizing coating and cut apart the circle, inoxidizing coating inner wall and the contact of cable layer outer wall, the four points of cable in situ portion all with stay wire layer outer wall fixed connection, four points of cable in situ portion all with supporting layer outer wall fixed connection, cable in situ wall and covering line layer outer wall contact, covering line layer inner wall and cable outer wall contact. The utility model discloses in, through set up fire-retardant groove between fire-resistant outer wall and the inoxidizing coating and cut apart into countless little storehouses with dividing the fire-retardant groove with dividing the circle, reached fire-resistant outer wall and in time prevented the burning by the fire retardant of fire-retardant inslot release after broken hole behind the burning of a fire.

Description

Novel fire-resistant cable

Technical Field

The utility model belongs to the technical field of the cable, specifically be a novel fire resisting cable.

Background

Currently, the need for rapid transfer of data and information has increased dramatically with reliance on computers, word processors, telefax, sensors and communication equipment. The advent of new technologies has made this area of equipment online and networked possible, resulting in the integrated development of communication systems. The use of these systems is increasing in certain areas such as high-rise buildings, ships, aircraft, trains, drilling platforms and mines. To connect these electronic components, a large number of wires and cables are used in these structures and fields.

Typically, installing wire cables in air conditioning systems and wire cable ducts is a convenient application. Since air conditioning and wire and cable ducts are continuous through these devices, the safety of the insulation and sheathing materials is a fundamental requirement, i.e., low flame propagation and smoke formation rates are required, and the insulation and sheathing layers of current temperature-resistant flame-retardant cables are generally made by mixing a single flame retardant with the cable material. The flame retardant used in large quantities is a high-temperature flame retardant, has non-flame retarding property, but generates a large amount of smoke and toxic gas when burning, and the amount of the smoke and the toxic gas is increased along with the increase of the burning temperature, so the flame retardant can only be used for low-temperature flame retarding.

The halogen-free flame retardant used recently has less smoke, low toxicity or no toxicity, but contains a large amount of hydrated substances, and the physical and mechanical properties of the cable are reduced due to dehydration reaction at high temperature, so the flame retardant temperature cannot be high. In conclusion, since a single flame retardant material is used, the cable generates either a large amount of smoke and toxic gases or the performance of the cable is degraded by a dehydration reaction, thereby affecting the flame retardant temperature and flame retardant time of the cable. As is well known, in southern areas of China, due to the fact that much rainwater exists, a cable trench or a cable tunnel is easily washed and wetted by rainwater, and products such as inorganic plugging materials or fire retardant bags of fireproof plugging materials adopted in the traditional cable trench are easily affected by moisture and deform after being washed by rainwater, the stability is poor, the effective fire retardant performance is seriously affected, and the flame retardant, fireproof and moistureproof effects are difficult to achieve.

Some of the disadvantages of existing insulation structures for fluorine-containing cables have been overcome by the advent of polyvinyl chloride, polytetrafluoroethylene, polyvinylidene fluoride insulation cable structures. Consisting of at least one conductor insulated with a polyvinyl chloride coating, a woven glass sheath impregnated with tetrafluoroethylene and a polyvinylidene fluoride protective jacket, although the cable construction provides good electrical non-conductivity and does not offer a multilayer flame retardant barrier, further improvements in its flame retardancy are needed. As more stringent fire safety standards are established, there is a need for wire and cable insulation that improves its resistance properties while maintaining good physical properties.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above-mentioned problems, a novel fire-resistant cable is provided.

The utility model adopts the technical scheme as follows:

the utility model provides a novel fire-resistant cable, includes fire-resistant outer wall, fire-retardant groove, covering line layer, cable, supporting layer, stay wire layer, cuts apart circle and inoxidizing coating, be equipped with fire-retardant groove and cut apart the circle between fire-resistant outer wall inner wall and the inoxidizing coating, inoxidizing coating inner wall and the contact of cable layer outer wall, four points in cable layer all with stay wire layer outer wall fixed connection, four points in cable layer inner portion all with supporting layer outer wall fixed connection, cable layer inner wall and the contact of covering line layer outer wall, covering line layer inner wall and the contact of cable outer wall.

The flame-retardant groove is a gap between the inner wall of the fireproof outer wall and the protective layer, and the flame-retardant groove is filled with flame retardant magnesium hydroxide.

The fireproof outer wall is made of polytetrafluoroethylene-impregnated woven glass and polyvinylidene fluoride, and the wrapping layer is made of polyvinyl chloride.

The protective layer is made of halogen-free flame-retardant low-smoke polyolefin, and the inner wall of the protective layer is matched with the cable layer.

The cable layer is woven by nylon, the supporting layer is an oblate rubber strip, and the wire drawing layer is woven by copper wires.

The outer wall of the dividing ring is fixedly connected with the inner wall of the fireproof outer wall, and the inner wall of the dividing ring is fixedly connected with the outer wall of the protective layer.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through set up fire-retardant groove between fire-resistant outer wall and the inoxidizing coating and cut apart into countless little storehouses with dividing the fire-retardant groove with dividing the circle, reached fire-resistant outer wall and in time prevented the burning by the fire retardant of fire-retardant inslot release after broken hole behind the burning of a fire.

2. The utility model discloses in, through setting up cable layer parcel supporting layer and acting as go-between layer, reached the cable and reduced the injury that strikes and drag and bring.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a side sectional view of the present invention;

fig. 3 is an enlarged view of a structure a in fig. 1 according to the present invention.

The labels in the figure are: 1. a refractory outer wall; 2. a flame retardant tank; 3. a wrapping layer; 4. a cable layer; 5. a cable; 6. a support layer; 7. a wire drawing layer; 8. dividing a ring; 9. and (4) a protective layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-3, a novel fire-resistant cable, including fire-resistant outer wall 1, fire-retardant groove 2, envelope layer 3, cable layer 4, cable 5, supporting layer 6, act as go-between layer 7, cut apart circle 8 and inoxidizing coating 9, be equipped with fire-retardant groove 2 between fire-resistant outer wall 1 inner wall and the inoxidizing coating 9 and cut apart circle 8, inoxidizing coating 9 inner wall and the contact of 4 outer walls on cable layer, 4 inside four points on cable layer all with act as go-between layer 7 outer wall fixed connection, 4 inside four points on cable layer all with supporting layer 6 outer wall fixed connection, 4 inner walls on cable layer and the contact of 3 outer walls on envelope layer, 3 inner walls on envelope layer and the.

Referring to fig. 1 to 2, in this application, fire-retardant groove 2 is the clearance between 1 inner wall of fire-resistant outer wall and inoxidizing coating 9, and fire-retardant groove 2 intussuseption is filled with fire retardant magnesium hydrate, and fire-resistant outer wall 1 is for steeping woven glass and the polyvinylidene fluoride of tetrafluoroethylene, and envelope curve layer 3 is polyvinyl chloride, and inoxidizing coating 9 is for the fire-retardant low smoke polyolefin of halogen-free for the cover, and inoxidizing coating 9 inner wall and 4 looks adaptations of cable layer for the cable multilayer is fire-retardant, effectively prevents the condition of the fire-retardant failure of.

Referring to fig. 1 to 3, in this application, cable layer 4 is woven for the nylon, and supporting layer 6 is oblate rubber strip, and layer 7 of acting as go-between is woven for the copper wire, cuts apart circle 8 and is countless, cuts apart 8 outer walls of circle and all with 1 inner wall fixed connection of fire-resistant outer wall, cuts apart 8 inner walls of circle and all with 9 outer wall fixed connection of inoxidizing coating for promote the whole tensile strength of cable.

The working principle is as follows: set up fire-retardant groove 2 and cut apart into countless little storehouses with cutting circle 8 with fire-retardant groove 2 through setting up between fire-resistant outer wall 1 and inoxidizing coating 9 for fire-resistant outer wall 1 can in time be stopped the burning by the fire retardant of release in the fire-retardant groove 2 after being broken the hole by the burning of a fire, through setting up cable layer 4 parcel supporting layer 6 and layer 7 of acting as go-between, make the cable reduce the injury that strikes and pull and bring.

The fire-retardant groove 2 is arranged between the fire-resistant outer wall 1 and the protective layer 9, and the fire-retardant groove 2 is divided into countless small bins by the dividing ring 8, so that the fire-retardant outer wall 1 can be broken into holes after being burnt by fire and then can be timely prevented from burning by the fire retardant released from the fire-retardant groove 2.

Through setting up cable layer 4 parcel supporting layer 6 and the layer 7 of acting as go-between, reached the cable and reduced the impact and dragged the injury that brings.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a novel fire-resistant cable, includes fire-resistant outer wall (1), fire-retardant groove (2), envelope curve layer (3), cable layer (4), cable (5), supporting layer (6), stay wire layer (7), segmentation circle (8) and inoxidizing coating (9), its characterized in that: be equipped with fire-retardant groove (2) between fire-resistant outer wall (1) inner wall and inoxidizing coating (9) and cut apart circle (8), inoxidizing coating (9) inner wall and cable layer (4) outer wall contact, cable layer (4) inside four-point all with stay wire layer (7) outer wall fixed connection, cable layer (4) inside four-point all with supporting layer (6) outer wall fixed connection, cable layer (4) inner wall and wrapping wire layer (3) outer wall contact, wrapping wire layer (3) inner wall and cable (5) outer wall contact.

2. A novel fire resistant cable as claimed in claim 1, wherein: the flame-retardant groove (2) is a gap between the inner wall of the fireproof outer wall (1) and the protective layer (9), and the flame-retardant groove (2) is filled with flame retardant magnesium hydroxide.

3. A novel fire resistant cable as claimed in claim 1, wherein: the fireproof outer wall (1) is made of woven glass and polyvinylidene fluoride which are impregnated with tetrafluoroethylene, and the wrapping layer (3) is made of polyvinyl chloride.

4. A novel fire resistant cable as claimed in claim 1, wherein: the protective layer (9) is made of halogen-free flame-retardant low-smoke polyolefin, and the inner wall of the protective layer (9) is matched with the cable layer (4).

5. A novel fire resistant cable as claimed in claim 1, wherein: the cable layer (4) is woven by nylon, the supporting layer (6) is an oblate rubber strip, and the wire drawing layer (7) is woven by copper wires.

6. A novel fire resistant cable as claimed in claim 1, wherein: the number of the dividing rings (8) is infinite, the outer walls of the dividing rings (8) are fixedly connected with the inner wall of the fireproof outer wall (1), and the inner walls of the dividing rings (8) are fixedly connected with the outer wall of the protective layer (9).