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

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...

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

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