CN212136027U

CN212136027U - Fireproof cable with continuous flexible sheath

Info

Publication number: CN212136027U
Application number: CN202021095879.XU
Authority: CN
Inventors: 王壮新
Original assignee: Guangzhou Guanghuitong Cable Co ltd
Current assignee: Guangzhou Guanghuitong Cable Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-12-11
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a fireproof cable with continuous flexible sheath, which belongs to the technical field of fireproof cable, comprising a conductor core layer, wherein the outer side wall of the conductor core layer is wrapped with an insulating layer, the outer wall of the insulating layer is wound with a mica tape layer, the outer side wall of the mica tape layer is sleeved with an inner sheath, the surface of the inner sheath is provided with four splicing grooves, the outer side wall of the inner sheath is sleeved with a separation sleeve, the material of the fireproof outer sheath is woven into a tube by high-quality alkali-free glass fiber yarn, and then is coated with organic high-temperature resistant silicon resin to be processed at high temperature, the chemical bond is stable, the fireproof cable is not broken and decomposed under high temperature state, thereby having good fireproof and high-temperature resistant performance, the material of the fireproof coating is perchloroethylene resin and chlorinated rubber as base materials, the plasticizer is added to form a uniform and compact carbonized layer when encountering, thereby playing a good heat insulation and fire prevention effect and comprehensively improving the fire resistance of the fireproof cable sheath and the outer wall.

Description

Fireproof cable with continuous flexible sheath

Technical Field

The utility model relates to a fireproof cable technical field especially relates to a fireproof cable with continuous flexible sheath.

Background

The electric wire and the cable can be used in various building projects and are widely applied, in recent years, in order to improve the safety level of an electric circuit and reduce the occurrence and loss of electric fire accidents, the national ministry of construction, the ministry of public security and some local governments have successively provided some electric design specifications and clearly stipulate that fireproof cables must be adopted in some important electric circuits and places, and thus the application range of the fireproof cables is further widened.

Patent number is CN 209591629U's publication a fire prevention cable, has solved the problem that shortens cable life, has reached extension cable life's effect.

The fireproof cable has the following defects that 1, the fireproof material of the fireproof cable is single, the sheath has single function and does not have fireproof performance, so that the fireproof performance of the outer surface layer of the cable is poor, the outer surface is easy to melt when being heated, and the like; 2. when the fireproof cable is subjected to joint treatment and the like, a sheath coated on an outer layer is generally required to be cut off and then stripped, the outer wall of the cable is generally directly coated with a traditional cable sheath, friction force is large during stripping, and stripping is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fire prevention cable with continuous flexible sheath aims at improving the fire behavior and the top layer heat resistance of cable, can conveniently peel off the fire prevention oversheath when connecting simultaneously.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of fireproof cable with continuous flexible sheath, including the conductor sandwich layer, conductor sandwich layer outer wall cladding has the insulating layer, insulating layer outer wall has the mica tape layer around having cup jointed, the inner sheath has been cup jointed to mica tape layer outer wall, inserting groove and inserting groove have been seted up on the inner sheath surface and have been four, the inner sheath lateral wall has cup jointed the separation sleeve, separation sleeve inner wall fixedly connected with pegs graft to the inside grafting piece of inserting groove, separation sleeve outer wall cladding has the fire prevention oversheath, fire prevention oversheath outer wall spraying has fire protection coating.

Optionally, the insulating layer is made of silica gel.

Optionally, the inner sheath and the isolation sleeve are both made of polyvinyl chloride resin.

Optionally, the fireproof outer sheath is made of alkali-free glass fiber yarn, and the fireproof coating is made of perchloro-ethylene resin.

The utility model has the advantages as follows:

the outermost layer of the conductor core layer is coated with a fireproof outer sheath, the fireproof outer sheath is formed by coating organic high-temperature-resistant silicon resin and performing high-temperature treatment after being woven into a tube by high-quality alkali-free glass fiber yarns, the alkali-free glass fiber has the characteristics of extremely strong tensile force, no wrinkle and breakage, vulcanization resistance, no smoke, no halogen, no toxicity, pure oxygen, no combustion and good insulation, and after being cured by organic silica gel, the fireproof outer sheath has stronger safety and environmental protection performance, stable chemical bonds and no fracture and decomposition in a high-temperature state, so that the fireproof outer sheath has good fireproof and high-temperature-resistant performance.

The isolation belt is inserted into the insertion groove formed in the surface of the inner sheath through the insertion block fixed to the inner wall of the isolation belt, the fireproof outer sheath is connected with the inner sheath, when a cable needs to be connected, the fireproof outer sheath is cut off, the fireproof outer sheath is pulled outwards along the insertion groove to be peeled off, and the fireproof outer sheath is only connected with the inner sheath through the insertion block and the insertion groove due to the fact that the inner diameter of the isolation sleeve is slightly larger than the outer diameter of the inner sheath, the contact area is reduced, the friction coefficient when the fireproof outer sheath and the isolation sleeve are peeled off is further reduced, and the fireproof outer sheath and the isolation sleeve are conveniently peeled off.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a fireproof cable with a continuous flexible sheath according to an embodiment of the present invention;

fig. 2 is an external structural schematic diagram of a fireproof cable with a continuous flexible sheath according to an embodiment of the present invention.

In the figure: 1. a conductor core layer; 2. an insulating layer; 3. a mica tape layer; 4. an inner sheath; 401. inserting grooves; 5. an isolation sleeve; 501. an insertion block; 6. a fire-proof outer sheath; 7. and (3) a fireproof coating.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A fire-proof cable with a continuous flexible sheath according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.

Referring to fig. 1 and fig. 2, the embodiment of the utility model provides a fire prevention cable with continuous flexible sheath, including conductor core layer 1, the cladding of 1 lateral wall of conductor core layer has insulating layer 2, the winding of 2 outer walls of insulating layer has mica tape layer 3, inner sheath 4 has been cup jointed to 3 lateral walls of mica tape layer, inserting groove 401 and inserting groove 401 have been seted up on 4 surfaces of inner sheath are four, inner sheath 4 lateral wall has cup jointed

separation sleeve

5, 5 inner wall fixedly connected with of separation sleeve pegs graft to the inside grafting piece 501 of inserting

groove

401, 5 outer wall claddings of separation sleeve have

fire prevention oversheath

6, 6 outer wall spraying of fire prevention oversheath has fire protection coating 7.

Illustratively, the fireproof outer sheath 6 is made of high-quality alkali-free glass fiber yarn woven into a tube, coated with organic high-temperature-resistant silicone resin and subjected to high-temperature treatment, the chemical bond is stable, and the coating does not break and decompose at high temperature, so the coating has good fireproof and high temperature resistant performance, the material of the fireproof coating 7 is the perchloro-ethylene resin and chlorinated rubber which are used as base materials, the plasticizer is added, the fireproof coating can foam and expand when meeting fire, a uniform and compact carbonized layer is formed, thereby having good heat insulation and fire prevention effects, comprehensively improving the fire resistance of the sheath and the outer wall of the fire-proof cable, because the inner diameter of the isolation sleeve 5 is slightly larger than the outer diameter of the inner sheath 4, the isolation sleeve 5 is connected with the inner sheath 4 only through the insertion block 501 and the insertion groove 401, the contact area is reduced, and further, the friction coefficient of the fireproof outer sheath 6 and the isolation sleeve 5 in the peeling process is reduced, and the fireproof outer sheath 6 and the isolation sleeve 5 are conveniently peeled.

When the insulating material is used, the outer wall of the conductor core layer 1 is coated with the insulating layer 2, the insulating layer 2 is made of silica gel, the silica gel is also called silicic acid gel, is a high-activity adsorbing material and belongs to an amorphous substance, the main component of the silica gel is silica gel, the chemical property is stable, the silica gel is non-combustible and has a good insulating effect, the mica tape layer 3 is a high-performance mica insulating product and has good high-temperature resistance and combustion resistance, the insulating and fireproof protective effects can be achieved on the conductor core layer 1, the inner sheath 4 and the isolation sheath 5 are both made of polyvinyl chloride serving as base resin, and a stabilizer, a plasticizer and calcium carbonate are added, so that the insulating material is low in use cost, good in flexibility, quite firm and has a certain fireproof performance, the isolation sheath 5 is inserted into the insertion groove 401 formed in the surface of the inner sheath 4 through the insertion block 501 fixed to the inner wall of the isolation sheath 5, and the inner, when the cable needs to be jointed, the fireproof outer sheath 6 is cut off, the fireproof outer sheath 6 is pulled outwards along the insertion groove 401 so as to peel off the fireproof outer sheath 6, because the inner diameter of the isolation sleeve 5 is slightly larger than the outer diameter of the inner sheath 4, the isolation sleeve 5 and the inner sheath 4 are connected only through the insertion block 501 and the insertion groove 401, the contact area is reduced, the friction coefficient when the fireproof outer sheath 6 and the isolation sleeve 5 are peeled off is further reduced, the fireproof outer sheath 6 and the isolation sleeve 5 are conveniently peeled off, the outermost layer of the conductor core layer 1 is coated with the fireproof outer sheath 6, the fireproof outer sheath 6 is made of high-quality alkali-free glass fiber yarns, is woven into a pipe, is coated with organic high-temperature-resistant silicon resin and is processed at high temperature, the alkali-free glass fiber has the characteristics of strong tensile force, no wrinkle and breakage, sulfuration resistance, no smoke, no halogen, no toxicity, pure oxygen, more strengthen its safety ring protects the performance, its chemical bond is stable, does not split and decompose under the high temperature state, consequently has fine fire prevention high temperature resistance, and fire protection coating 7 materials are for using perchloro ethylene resin and chlorinated rubber to make the matrix, add the plasticizer and constitute, and fire protection coating can the foaming inflation when meeting fire, forms even compact carbonization layer, and then plays fine thermal-insulated fire prevention effect, promotes the fire resistance of fire prevention cable sheath and outer wall comprehensively.

It should be noted that, the utility model relates to a fire prevention cable with continuous flexible sheath, including conductor core layer 1, insulating layer 2, mica tape layer 3, inner sheath 4, inserting groove 401, separation sleeve 5, grafting piece 501, fire prevention oversheath 6, fire protection coating 7, the part is general standard component or the part that technical staff in the field knows, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a fireproof cable with continuous flexible sheath, includes conductor sandwich layer (1), its characterized in that, conductor sandwich layer (1) lateral wall cladding has insulating layer (2), insulating layer (2) outer wall round-trip has mica tape layer (3), inner sheath (4) have been cup jointed to mica tape layer (3) lateral wall, inserting groove (401) and inserting groove (401) have been seted up on inner sheath (4) surface are four, inner sheath (4) lateral wall has cup jointed isolation cover (5), isolation cover (5) inner wall fixedly connected with inserts to inserting block (501) of inserting groove (401) inside, isolation cover (5) outer wall cladding has fire prevention oversheath (6), fire prevention oversheath (6) outer wall spraying has fire protection coating (7).

2. A fire-resistant cable with a continuous flexible sheath according to claim 1, characterised in that the insulating layer (2) is made of silica gel.

3. A fire-resistant cable with a continuous flexible sheath according to claim 1, characterized in that the inner sheath (4) and the insulating sheath (5) are made of polyvinyl chloride resin.

4. A fire-resistant cable with a continuous flexible sheath according to claim 1, characterized in that the fire-resistant outer sheath (6) is made of alkali-free glass fibre yarn and the fire-resistant coating (7) is made of perchloroethylene resin.