A sheathed fire-resistant wire and cable
A wire and cable and sheath technology, which is applied in the field of sheathed fire-resistant wire and cable, can solve the problems of high production cost, complicated manufacturing process, unfavorable practical application, etc., and achieve the effect of strong heat insulation and good insulation
Active Publication Date: 2021-06-18
扬州利家科技有限公司
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Problems solved by technology
[0004] A sheathed fire-resistant wire and cable proposed by the present invention solves the problem that the traditional fire-resistant cable can no longer meet the needs of the current situation, its manufacturing process is complicated, the production cost is high, and it is not conducive to practical application.
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0031] refer to Figure 1-2 , a sheathed fire-resistant wire and cable, including a support frame 8, a conductor 6, a flame-retardant layer 2 and a sheath 1;
[0032] The support frame 8 is located at the center of the cable, and the support frame 8 is an elastic frame; the conductor 6 is arranged in multiples, and is evenly distributed along the support frame 8 as the center of the circle; the outer part of the conductor 6 is provided with an insulating layer 7; the insulating layer 7, the conductor 6 and the The skeleton forms the inner core of the cable;
[0033] The outside of the inner core is provided with a steel wire armor layer 5; the outside of the steel w...
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The invention belongs to the technical field of wires and cables, in particular to a sheathed fire-resistant wire and cable, aiming at the problems that the existing traditional fire-resistant cables can no longer meet the needs of the current situation, the manufacturing process is complicated, the production cost is high, and it is not conducive to practical application , the following scheme is proposed, which includes a support frame, a conductor, a flame-retardant layer and a sheath; the support frame is located at the center of the cable, and the support frame is an elastic frame; multiple conductors are arranged and evenly distributed along the support frame as the center of the circle; The outer part of the conductor is provided with an insulating layer; the insulating layer, conductor and skeleton form the inner core of the cable; the outer part of the inner core is provided with a steel wire armor layer; the outer part of the steel wire armor layer is wrapped with an isolation sleeve; A flame-retardant layer is provided outside the flame-retardant layer with a sheath; a cavity is formed between the flame-retardant layer, the sheath and the isolation sleeve; the invention has simple structure, good heat insulation effect, and good flame-retardant effect at the same time.
Description
technical field [0001] The invention relates to the technical field of wires and cables, in particular to a sheathed fire-resistant wire and cable. Background technique [0002] At present, with the rapid development of the electric power industry, the use of wires and cables has risen sharply. In 2010, the total output value of the industry reached more than 930 billion yuan, and the number of employees exceeded 720,000. In terms of scale, my country has become the world's largest producer of wire and cable. The rapid development and transformation and upgrading of the industry have brought about the desire for technological improvement and the development of high-safety wire and cable, especially the research and utilization of new wire and cable materials are of great significance to the development of the wire and cable industry. Since most of the wires and cables widely used in various sectors such as industry, agriculture, and military are old-fashioned PVC wires and ...
Claims
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IPC IPC(8): H01B7/29H01B7/295H01B7/22H01B13/00A62C3/16
CPCA62C3/16H01B7/226H01B7/29H01B7/295H01B13/00
Inventor 张怡隆李琳
Owner 扬州利家科技有限公司