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Cable combustion fire simulation system and method for full-size underground space

An underground space and simulation system technology, applied in teaching models, educational appliances, instruments, etc., can solve the problems of insufficient cable fire research and high difficulty in cable fire research, and achieve the effect of eliminating potential safety hazards and reducing economic losses.

Inactive Publication Date: 2019-12-31
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the background technology, this application provides a full-scale underground space cable combustion fire simulation system and method to solve the current problems of high difficulty and insufficient research on cable fires in underground spaces

Method used

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  • Cable combustion fire simulation system and method for full-size underground space
  • Cable combustion fire simulation system and method for full-size underground space
  • Cable combustion fire simulation system and method for full-size underground space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] figure 1 It is a schematic diagram of the implementation flow of a full-scale underground space cable combustion fire simulation system and device provided by the embodiment of the present application. As shown in the figure, the method may include the following steps:

[0065] Step 1, the cable is mode-burned in the L-shaped cable channel. The L-shaped cable channel is the main part of the full-scale simulation analysis laboratory. It adopts a steel structure and is composed of a proportional size model of the L-shaped channel composed of a 2m horizontal channel and a 4m*2m*1m longitudinal channel. It is used in tunnels. Simulation of combustion conditions. The main structure of the channel is equipped with a fire-proof and heat-insulation system, and the thickness of the heat-insulation layer is required to be 300 mm, which can meet the fire resistance requirements of 1000 degrees Celsius and withstand 20 minutes. The L-shaped cable channel is also equipped with oth...

Embodiment 2

[0076] Figure 4 It is a schematic diagram of the cable channel main body of a full-scale underground space cable combustion fire simulation system provided by the embodiment of the present application. For the convenience of description, only the parts related to the embodiment of the present application are shown.

[0077] The cable channel body includes:

[0078] L-shaped steel structure in the channel, heat insulation layer, two-way cable support, explosion-proof glass isolation observation window, drainage groove;

[0079] The L-shaped steel structure, heat insulation layer, two-way cable support, explosion-proof glass isolation observation window, and drainage groove are rationally combined in sequence;

[0080] The L-shaped steel structure is composed of a transverse channel structure and a longitudinal channel structure, and the transverse channel structure is designed with different interfaces according to actual working conditions, and the longitudinal channel is de...

Embodiment 3

[0085] Figure 5 It is a full-scale underground space cable combustion fire simulation system and smoke pipe test system provided by the embodiment of the application. For the convenience of description, only the parts related to the embodiment of the application are shown.

[0086] The smoke pipe test system includes:

[0087] Laser smoke density test system, temperature field test system and calorimetry system.

[0088] The laser smoke density testing system is composed of a laser light source and a photoelectric sensor. The light source is emitted by the laser light source, and the photoelectric sensor receives the light signal, so as to realize the non-contact smoke density measurement.

[0089] The temperature field test system is composed of Omgea K-type thermocouples and couple brackets to achieve high-precision temperature field measurement. Among them, the selected OMEGA thermocouple is produced by the American omega engineering company. This company is the first c...

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Abstract

The invention discloses a cable combustion fire simulation system for a full-size underground space. The system comprises a channel main body steel frame structure, and an L-shaped cable channel structure, a smoke exhaust system, a fire extinguishing system, a combustion system, a monitoring system, a smoke pipe testing system, an analysis control system, a calibration and adjusting system and a combustion waste gas treatment system which are sequentially connected; and the L-shaped cable channel structure is fixed on the channel main body steel frame structure. The system and a method for simulating a cable combustion fire scene in the underground space by using the system can conveniently research cable fire in the underground space and the cable fire, thereby researching the fire spreading mechanism under various working conditions, effectively protecting an underground cable channel, carrying out the research of active fire extinguishing early warning, eliminating potential safetyhazards and reducing the economic loss caused by the cable fire.

Description

technical field [0001] The invention relates to a cable combustion fire simulation system and method in a full-scale underground space, belonging to the field of safe operation of power transmission and distribution cables. Background technique [0002] Cables are widely used in all walks of life in our country and in many fields of national life, providing an important guarantee for the country's industrial and economic development. The cable is usually composed of a sheath layer, a filling layer, an insulating layer, a wire core, etc., and the filling layer and the insulating layer are generally processed from high-molecular polymer materials, which have certain flammability and strong toxicity. Some of the insulating layers are thermoplastic materials. When it is heated or burnt, it will appear the coupled fire spread behavior of molten dripping and flowing burning, which not only increases the risk of fire, but also causes more serious damage to the safety of people's li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 贾伯岩张鹏魏力强刘宏亮徐亚兵伊晓宇齐锦涛杜旭浩
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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