Cable, fireproof and explosion-proof blanket and application thereof

A technology of explosion-proof cavity and fire-proof cavity, which is applied in the field of cables and fire-proof and explosion-proof blankets, can solve the problems of inability to install explosion-proof shells, threats to the personal safety of operators, and long distances between wells.

Active Publication Date: 2022-01-07
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to space constraints in small-diameter cable tunnels and cable wells, traditional explosion-proof enclosures cannot be installed in them
The environment of this kind of cable tunnel is sealed, and the distance between personnel entering and exiting the well is long. When the cable joints in the tunnel fail suddenly and cause explosions and fire smoke, etc., on the one hand, it may cause great damage to other nearby equipment. On the other hand, May pose a threat to the personal safety of workers

Method used

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  • Cable, fireproof and explosion-proof blanket and application thereof
  • Cable, fireproof and explosion-proof blanket and application thereof
  • Cable, fireproof and explosion-proof blanket and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] In some of the embodiments, the preparation method of the modified expandable graphite particles includes the following steps (1)-(3).

[0047] (1) Pulverize the expandable graphite, and then microwave the pulverized expandable graphite under 100W power for 20s-40s to obtain the primary product.

[0048] (2) The initial product, basic zinc carbonate and water are ultrasonically mixed, and then calcium carbonate powder is added to continue mixing to obtain a mixture.

[0049] (3) The mixture is centrifuged to obtain precipitates, and dried to obtain modified expandable graphite particles.

[0050] The basic zinc carbonate in the modified expandable graphite particles decomposes at high temperature to produce carbon dioxide and water, and the calcium carbonate decomposes at high temperature to produce carbon dioxide, which can further curb combustion and has good flame retardancy.

[0051] In some of these embodiments, the mass ratio of basic zinc carbonate to the primary ...

Embodiment 1

[0066] The fire-proof and explosion-proof blanket of this embodiment includes a blanket main body 100 and a fastening component for wrapping the fire-proof and explosion-proof blanket at the high-voltage cable joint. The blanket body includes an insulating layer 101 and a basalt fiber layer 102, the insulating layer 101 and the insulating layer 101 and the basalt fiber layer 102 are respectively the upper surface and the lower surface of the blanket main body 100, and the side of the basalt fiber layer 102 is connected to the side of the insulating layer 101. The edges are wrapped and connected, and an interlayer cavity is formed between the insulating layer 101 and the basalt fiber layer 102, and the interlayer cavity is divided into a fireproof cavity, an explosion-proof cavity and a buffer cavity by sewing lines. The fireproof cavity, explosion-proof cavity and buffer cavity are wrapped in the high-voltage cable joint in turn, and the width of the fireproof cavity, explosion...

Embodiment 2

[0074] The fire and explosion-proof blanket of this embodiment is basically the same as that of Embodiment 1, except that the mass ratio of the expandable graphite particles to the modified expandable graphite particles in the expandable graphite bag 103 is different, and the preparation method of the modified expandable graphite particles is different.

[0075] The fire-proof and explosion-proof blanket of this embodiment includes a blanket main body 100 and a fastening component for wrapping the fire-proof and explosion-proof blanket at the high-voltage cable joint. The fire and explosion-proof blanket body includes an insulating layer 101 and a basalt fiber layer 102. The insulating layer 101, the insulating layer 101 and the basalt fiber layer 102 are the upper surface and the lower surface of the blanket main body 100, respectively, and the sides of the basalt fiber layer 102 cover the insulating layer 101. The sides of the insulation layer 101 and the basalt fiber layer 1...

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PUM

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Abstract

The invention relates to a cable, a fireproof and explosion-proof blanket and application thereof. The fire-proof and explosion-proof blanket is provided with a blanket main body, and the blanket main body comprises an insulating layer, a basalt layer, an expandable graphite bag, an explosion-proof structure and an energy-absorbing material layer. The basalt fiber layer and the insulating layer are connected and define an interlayer cavity, the interlayer cavity comprises a fireproof cavity, an anti-explosion cavity and a buffering cavity which are sequentially arranged along the extending direction of the blanket main body, and the expandable graphite bag is filled in the fireproof cavity. The explosion-proof cavity is filled with the explosion-proof structure, and the explosion-proof structure comprises an arc-resistant layer, a hand-torn stainless steel layer and a Kevlar fiber layer which are sequentially arranged in a stacked manner; the arc-resistant layer is arranged at the side close to the insulating layer, the Kevlar fiber layer is arranged at the side close to the basalt fiber layer, and the buffer cavity is filled with the energy absorption material layer. Through the reasonable arrangement of a functional structure, the fireproof and explosion-proof blanket has excellent fireproof and explosion-proof performance, can be wound and wrapped at a high-voltage cable joint for protection, and is simple and convenient to use and operate.

Description

technical field [0001] The invention relates to the technical field of electric equipment safety, in particular to a cable, a fireproof explosion-proof blanket and applications thereof. Background technique [0002] Wires and cables are the carrier of power transmission. Since the cable is laid in the tunnel, the production of the cable intermediate joint is affected by factors such as on-site production conditions, materials, and craftsmanship, and becomes a weak link in the cable line. Once the cable intermediate joint fails, the destructive force will not only cause the power outage of the cable line, but also cause large-scale damage to the surrounding cable lines, power facilities and personnel, and even cause secondary accidents. With the development of urban economy, the number of 110kV and above high-voltage cable lines laid in tunnels continues to increase. In order to save channel resources, the application of cable laying in 2.4m small-diameter tunnels, pipes an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/02H01B7/28H01B7/29H01B7/18B32B15/18B32B15/04B32B15/088B32B15/14B32B27/02B32B27/34B32B33/00
CPCH01B7/17H01B7/02H01B7/28H01B7/29H01B7/18B32B15/18B32B15/04B32B15/088B32B15/14B32B5/02B32B33/00B32B2262/0269Y02A30/14
Inventor 段绍辉刘媛罗智奕张金广詹威鹏宗伟王虹丽
Owner SHENZHEN POWER SUPPLY BUREAU
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