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Cable trench cover plate sealing measure fire resistance testing device and testing method

A cable trench cover, fire resistance technology, applied in the direction of chemical analysis by combustion, can solve the problems of preventing water, oil penetration, fire spread, accident expansion, etc., and achieve the effect of preventing the further expansion of the fire

Pending Publication Date: 2020-10-09
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the construction process, there are gaps between the cover plates, which do not have the ability to prevent the penetration of liquids such as water and oil
When a transformer fires, the internal transformer oil leaks, and the high-temperature hot oil fire passes through the nearby cable trenches, and will flow into the trenches through the gaps, igniting the cables, causing the fire to spread and the accident to expand
In order to improve the fire safety level of cable trenches in substations, substations have adopted slot-type cable trench cover plates, cement mortar plastering, glass fiber fireproof cloth and other gap sealing methods at present in substations, but there is no unified standard to judge such gap sealing methods. Advantages and disadvantages

Method used

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  • Cable trench cover plate sealing measure fire resistance testing device and testing method
  • Cable trench cover plate sealing measure fire resistance testing device and testing method
  • Cable trench cover plate sealing measure fire resistance testing device and testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Such as figure 1 As shown, a test device for fire resistance performance of cable trench cover sealing measures, including oil pool 1, test box 2, oil pan 3, oil delivery device 4, test box base 5, right-angle connector 6, image acquisition device, oil tank 8.

[0080] Such as figure 1 As shown, the oil pool 1 is set on the ground and is a cuboid pool, and a fire extinguishing device is arranged on the side wall of the oil pool 1; the fire extinguishing device includes a water spray system 12 arranged on the side wall of the oil pool 1, and the The water sprinkler system 12 includes a nozzle installed on the side wall of the oil pool 1, the nozzle is connected with an external water source or other fire extinguishing medium sources, and the number, position, and spray direction of the nozzles are set according to actual test requirements, which can meet the needs of the oil pool 1, The experiment box 2 and the oil pan 3 can be sprayed to extinguish the fire. The capa...

Embodiment 2

[0104] The present invention also discloses a test method using the above-mentioned cable trench cover sealing measure fire resistance performance test device, which includes the following steps:

[0105] s1. Debug the image acquisition device to ensure normal operation, and output all the pictures to the peripheral display; inject transformer oil into the oil tank 41, fix the oil tank 41, and prevent the swing during the experiment; dry the cable trench cover plate to be tested, and pretreat to The state of temperature and humidity balance, according to the type of cable trench cover, correspondingly select the sealing measures. The sealing measures are the existing technologies for sealing different cable trench covers, and can be selected according to the type of cable trench cover. In this embodiment, 3 One cable trench cover plate is combined into one test piece for the experiment, and three cable trench cover plates are spliced ​​together side by side in sequence;

[010...

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Abstract

The invention discloses a cable trench cover plate sealing measure fire resistance testing device and testing method. The device comprises an oil pool, a fire extinguishing device, an experiment box,an oil disc, an oil conveying device and an image acquisition device; the oil disc leads to the experiment box; the experiment box comprises a bottom plate and side walls located around the bottom plate; through holes penetrating up and down are formed in the bottom plate; protrusions higher than the bottom plate are arranged on the edges of the through holes; and oil flowing openings are formed in the side walls. The method comprises the steps of laying a cable trench cover plate, applying a load, installing a cotton pad and a temperature acquisition device, inputting transformer oil into theoil disc, igniting the oil disc, simulating flowing fire, testing fire resistance and heat insulation, fire resistance integrity, bearing capacity, appearance, sealing performance and the like in anexperiment process, and recording experiment time; and extinguishing the experiment site after the experiment is finished. The device and the method have the advantages that a transformer oil flowingfire scene can be simulated, the fire resistance of the cable trench cover plate and gap plugging is tested, the bearing, integrity and heat insulation performance of the cable trench cover plate andgap plugging are evaluated, a selection basis is provided for model selection, and fire accident expansion is avoided.

Description

technical field [0001] The invention relates to the field of disaster prevention and mitigation of power transmission and transformation equipment, in particular to a fire resistance test device and a test method for cable trench cover sealing measures. Background technique [0002] The cable trench cover is a component used to lay on the cable trench to protect the cables. For example, the Chinese utility model patent with the publication number CN201490671U discloses a cable trench cover, which includes upper and lower open cover supports. seat, a plurality of covers that are detachably set up above the cover support along the length direction of the cover support and completely cover the opening of the cover support, each of the covers includes an upper plate part, parallel The upper plate part is fixedly arranged on the lower plate part below the upper plate part in a staggered manner, and the two adjacent covers are spliced ​​in a zigzag seam, which changes the traditio...

Claims

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Application Information

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IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 孙韬张佳庆柯艳国谢佳范明豪尚峰举叶良鹏过羿尹峰
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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