High-voltage power cable smoldering and open fire simulation device and method

A high-voltage power, simulation device technology, applied in the direction of chemical analysis using combustion, can solve the problems of poor repeatability, large differences, and unfavorable development of fire prevention and control technology, and achieve high repeatability and improve repeatability. Effect

Pending Publication Date: 2021-12-28
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fire smoke development process formed by the existing cable fire simulation method is quite different from the actual high-voltage power cable tunnel early fire smoke process, and the repeatability is not good, which is not conducive to the development of various fire prevention and control technologies in high-voltage power cable tunnels

Method used

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  • High-voltage power cable smoldering and open fire simulation device and method
  • High-voltage power cable smoldering and open fire simulation device and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A high-voltage power cable smoldering and open flame simulation device includes three parts: an electric heating module 1 , a cable sample fixing module 2 , and a fire extinguishing module 3 . in:

[0039] The electric heating module 1 includes: an electric heating furnace 4 connected in series by wires, a power voltage regulator 5 and a switch 6, wherein the cylindrical arc surface heating panel 7 of the electric heating furnace 4 is composed of an electric furnace wire 8 and an insulating interlayer 9, Wherein the insulating interlayer 9 is a concrete interlayer, and the input voltage of the electric heating furnace 4 is controlled through the power voltage regulator 5, thereby changing the heating power of the cylindrical arc-shaped heating panel 7.

[0040]The cable sample fixing module 2 comprises: a first support 10 and a second support 11, both of which are 20 centimeters high and 15 centimeters wide, between the first support 10 and the second support 11, a cyli...

Embodiment 2

[0043] A high-voltage power cable smoldering and open flame simulation method is implemented by the high-voltage power cable smoldering and open flame simulation device in Embodiment 1, which can realize the whole process of smoldering and burning of the cable under the condition of small heating power; Under the condition of power heating, the initial stage of smoldering of the cable is realized, and it is transformed into an open flame combustion process in the later development stage. The specific experimental operation steps are as follows:

[0044] The steps of "whole process smoldering combustion" are as follows:

[0045] Step 1-1: Move the metal cover plate 29 along the slide rail 30 to the other end away from the tenon 28 .

[0046] Step 1-2: Place the temperature sensor 20 in the narrow groove 19 .

[0047] Step 1-3: Use the high-voltage power cable sample 15 to roll to the lowest position in the center of the cylindrical arc-shaped metal backing plate by its own gra...

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Abstract

The invention discloses a smoldering and open fire simulation device and method for a high-voltage power cable in the technical field of fire prevention and control and early warning of a high-voltage power cable tunnel. The comprises a cable sample fixing module with an opening side, a heating module for heating the cable sample fixing module and a fire extinguishing module capable of movably closing the opening side of the cable sample fixing module, and an ignition device capable of igniting a cable sample is arranged in the cable sample fixing module. A temperature sensor is further arranged on the side, close to the heating module, of the cable sample fixing module, and the numerical value of the temperature sensor is recorded in real time through a temperature collecting module. According to the invention, the fire smoke development process under the external heat source condition of the high-voltage power cable can be continuously and accurately simulated, and scientific guarantee is provided for research and development of a fire prevention and control technology in a high-voltage power cable tunnel.

Description

technical field [0001] The invention relates to a high-voltage power cable smoldering and open flame simulation device and method, and belongs to the technical field of high-voltage power cable tunnel fire prevention and control and early warning. Background technique [0002] More and more overhead high-voltage power lines in my country are going underground into cable tunnels. Once fires and other thermal disasters occur in underground high-voltage power cable tunnels, it is easy to seriously affect the safety and stable transmission of electricity in local or even larger areas. Therefore, high-voltage power cable tunnels The internal fire prevention and control technology research and development and system construction are important guarantees for the safe operation of high-voltage power cable tunnels. For the technical research and development and field testing of fire prevention and early warning in high-voltage power cable tunnels, the simulation and control of the ear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 张伟李陈莹陈杰谢启源刘建军胡丽斌谭笑曹京荥李鸿泽柏仓
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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