CN210349364U

CN210349364U - An environmentally friendly flexible fireproof cable

Info

Publication number: CN210349364U
Application number: CN201921378954.0U
Authority: CN
Inventors: 张乒; 韩宝忠; 刘辉; 王艳洁; 段新建
Original assignee: Shanghai Qifan Cable Co ltd
Current assignee: Shanghai Qifan Wire And Cable Technology Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-17
Anticipated expiration: 2029-08-23

Abstract

The utility model provides an environmental protection flexible fireproof cable, including sinle silk and outer conductor, include inner conductor and the insulating layer of cladding in the sinle silk outside the inner conductor, the sinle silk is single stranded inner conductor or stranded inner conductor, the insulating layer is pottery silica gel mud, the outer conductor is metal sheath; when the wire core is a multi-strand twisted inner conductor, the outer side of the wire core is coated with a reinforcing layer, and the reinforcing layer is filled in gaps among the inner conductors. In the application, the ceramic silica gel mud has the characteristics of high volume resistivity, high breakdown field strength, no moisture absorption, no water absorption, softness and the like after vulcanization, so that the cable meets the high safety performance requirement of the BTTZ cable, and the defects of easy moisture absorption of insulation, poor softness, incapability of large-length production and the like of the conventional cable are overcome.

Description

Environment-friendly flexible fireproof cable

Technical Field

The utility model relates to a wire and cable field especially relates to a flexible fireproof cable of environmental protection.

Background

With the rapid development of economy, people have higher and higher requirements on safety and environmental protection, and cables which are selected from high-rise buildings, large buildings, venues, high-end residential buildings and other occasions are required to have the characteristics of higher reliability, safety, environmental protection, simplicity and convenience in installation, convenience in maintenance and the like. At present, the BTTZ mineral insulated cable that the security is highest has caused very big inconvenience for the user because its hardness is great difficult for the installation, insulating easy moisture absorption, with high costs are difficult to big length production simultaneously, and other on the market such as the mica tape around the flexible mineral insulated cable structure of package composite construction complicated, and production processes is complicated, and has defects such as mica tape moisture absorption equally, also is difficult to reach the higher performance requirement of BTTZ cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an environmental protection flexible fireproof cable has good insulating properties, environmental protection security performance and flexible performance.

In order to realize the above object, the utility model provides an environmental protection flexible fireproof cable, from interior to exterior is equipped with inner conductor, insulating layer and outer conductor in proper order, the inner conductor is the monospar conductor, the insulating layer is pottery silica gel mud, the outer conductor is metal sheath.

Further, in the environment-friendly flexible fireproof cable, the outer conductor is coated with a low-smoke halogen-free flame-retardant outer sheath.

Further, in the environment-friendly flexible fireproof cable, the metal sheath is a smooth sheath or a corrugated sheath.

Further, in the environment-friendly flexible fireproof cable, the metal sheath is a copper sheath.

The utility model discloses still provide a flexible fireproof cable of environmental protection, from interior to exterior is equipped with sinle silk, enhancement layer and outer conductor in proper order, the sinle silk comprises the inner conductor of stranded, each the equal cladding in the outside of inner conductor has the insulating layer, the outside cladding of sinle silk has the enhancement layer, just the enhancement layer is filled each in the clearance between the inner conductor, the insulating layer is ceramic silica gel mud, the outer conductor is metal sheath.

Further, in the environment-friendly flexible fireproof cable, the number of the inner conductors in the wire core is 2-4 cores.

Further, in the environment-friendly flexible fireproof cable, the reinforcing layer is made of ceramic silica gel cement.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the ceramic silica gel mud has the characteristics of high volume resistivity, high breakdown field intensity, no moisture absorption, no water absorption, softness and the like after being vulcanized. The cable meets the high safety performance requirement of the BTTZ cable, and overcomes the defects of easy moisture absorption, poor flexibility and incapability of large-length production.

Drawings

FIG. 1 is a schematic structural view of a single core of the flexible fireproof cable for environmental protection of the present invention;

fig. 2 is the structure schematic diagram of the utility model discloses in the time of flexible fireproof cable multicore of environmental protection.

The cable comprises an inner conductor 1, an insulating layer 2, an outer conductor 3, a reinforcing layer 4 and a low-smoke halogen-free flame-retardant outer sheath 5.

Detailed Description

The environmentally friendly flexible fire cable of the present invention will now be described in greater detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

Example one

As shown in FIG. 1, the utility model provides an environmental protection flexible fireproof cable is equipped with inner conductor 1, insulating layer 2 and outer conductor 3 from interior to exterior in proper order, and inner conductor 1 is the single strand conductor, and outer conductor 3 is smooth copper sheathing or wrinkle copper sheathing.

The insulating layer 2 is ceramic silica gel mud which has the characteristics of high volume resistivity, high breakdown field strength, no moisture absorption, no water absorption, softness and the like after being vulcanized, so that the electrical insulation property of the cable is enhanced. The cable has excellent fireproof performance, can pass an A-level fire resistance test for continuously supplying power for 3 hours under the condition of high-temperature burning at 950-1100 ℃, and can meet the requirements of a BS6387 highest-level CWZ-level spraying and vibration test.

Meanwhile, the outer side of the outer conductor 3 can be optionally coated or not coated with the low-smoke halogen-free flame-retardant outer sheath 5, so that the environmental protection performance of the cable is improved.

Example two

As shown in fig. 2, the utility model also provides an environmental protection flexible fireproof cable, from interior to exterior is equipped with the sinle silk in proper order, enhancement layer 4 and outer conductor 3, the sinle silk comprises the inner conductor 1 of stranded, the quantity of the inner conductor 1 in the sinle silk is 2-4 cores, the equal cladding in the outside of each inner conductor 1 has insulating layer 2, the outside cladding of sinle silk has enhancement layer 4, and in the clearance of enhancement layer 4 packing between each inner conductor 1, insulating layer 2 and enhancement layer 4 are ceramic silica gel mud, outer conductor 3 is smooth copper sheathing or wrinkle copper sheathing.

The ceramic silica gel mud has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, residues after combustion are hard ceramic shells, hard shells are not melted and do not drip in a fire environment, the ceramic silica gel mud can be subjected to a fire test for 90min and cooled for 15min at the temperature of 950-1000 ℃ through the specification of GB/T19216.21-2003, and is suitable for any places needing fire resistance, and the ceramic silica gel mud plays a firm protection role in ensuring smooth power transmission under the fire condition. The fireproof performance of the cable is excellent, the cable can pass an A-level fireproof test for continuously supplying power for 3 hours under the condition of high-temperature burning at 950-1100 ℃, and the requirements of a BS6387 highest-level CWZ-level spraying and vibration test can be met. In this embodiment, the insulating layer 2 can enhance the electrical insulation of the cable, and the reinforcing layer 4 can play a role in assisting the insulation and enhancing the protection of the insulation.

In conclusion, in the embodiment, the provided environment-friendly flexible fireproof cable has the characteristics of high volume resistivity, high breakdown field strength, no moisture absorption, no water absorption, flexibility and the like after the ceramic silica gel mud is vulcanized, so that the cable meets the high safety performance requirement of the BTTZ cable, and the defects that the conventional cable is easy to absorb moisture, poor in flexibility, incapable of being produced in large length and the like are overcome.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. an environmental protection flexible fireproof cable, it is characterized in that, be provided with inner conductor, insulating layer and outer conductor successively from inside to outside, described inner conductor is single-strand conductor, and described insulating layer is ceramized silica gel mud, described The outer conductor is a metal sheath.

2 . The environmentally friendly flexible fireproof cable according to claim 1 , wherein the outer conductor is covered with a low-smoke halogen-free flame-retardant outer sheath. 3 .

3. The environmentally friendly flexible fireproof cable according to claim 1, wherein the metal sheath is a smooth sheath or a corrugated sheath.

4. The environmentally friendly flexible fireproof cable according to claim 3, wherein the metal sheath is a copper sheath.

5. An environmentally friendly flexible fireproof cable, characterized in that a wire core, a reinforcing layer and an outer conductor are arranged in sequence from the inside to the outside, the wire core is composed of multiple stranded inner conductors, and the outer sides of each inner conductor are covered with an insulating layer, the outer side of the wire core is covered with the reinforcing layer, and the reinforcing layer is filled in the gaps between the inner conductors, the insulating layer is ceramic silica gel mud, the The outer conductor is a metal sheath.

6 . The environmentally friendly flexible fireproof cable according to claim 5 , wherein the number of the inner conductors in the core is 2-4 cores. 7 .

7 . The environmentally friendly flexible fireproof cable according to claim 5 , wherein the outer conductor is covered with a low-smoke halogen-free flame-retardant outer sheath. 8 .

8 . The environmentally friendly flexible fireproof cable according to claim 5 , wherein the reinforcing layer is ceramized silica gel mud. 9 .

9 . The environmentally friendly flexible fireproof cable according to claim 5 , wherein the metal sheath is a smooth sheath or a corrugated sheath. 10 .

10 . The environmentally friendly flexible fireproof cable according to claim 9 , wherein the metal sheath is a copper sheath. 11 .