Sand depot for firefighting of transformer substations

Abstract

The invention discloses a sand depot for firefighting of transformer substations. The sand depot comprises a sand depot body and a control room, wherein the top of the sand depot body is provided withan open feeding hole, and the bottom of the sand depot body is provided with a discharge hole; the sand depot body is also provided with a firefighting water spray system, an extinguishing fluid spray system, a stirring system and a conveyer system; the firefighting water spray system is arranged on the interior wall of the open feeding hole; the extinguishing fluid spray system is arranged on the interior wall of the discharge hole; the stirring system is arranged above the discharge hole; the conveyer system is arranged at the bottom of the discharge hole; the firefighting water spray system, the extinguishing fluid spray system, the stirring system and the conveyer system are electrically connected with a control system in the control room; a sand depot cover plate is arranged at the open feeding hole and is connected with the top of the sand depot body in a sliding way. The sand depot is capable of realizing automatic control, can avoid the phenomenon that firefighting sand is hardened, and improves the firefighting sand supplementing capacity of a sandblasting fire protection device used for the transformer substation, thus achieving an effective firefighting effect.

Description

technical field [0001] The invention relates to the technical field of substation fire safety, in particular to a sand bin for substation fire protection. Background technique [0002] Most of the transformers, voltage transformers, and current transformers of the primary equipment in the substation adopt oil-immersed insulation, and the amount of mineral insulating oil is relatively large. It even reaches about 130t, and the single-phase oil weight of the high voltage reactor reaches about 70t. The insulating oil used has a flash point of 135-150°C, an ignition point of 165-195°C, and a spontaneous ignition point of about 332°C. It is easy to evaporate and burn, and can form an explosive mixture when mixed with air. The battery in the substation operates in parallel with the charger as a standby state, and all protection devices, automation devices, emergency lighting and other equipment rely on DC to provide power, and the consumption is relatively large. The substation ...

AI Technical Summary

Problems solved by technology

The sandblasting firefighting devices used in substations require a large amount of firefighting sand when extinguishing fires. There is no effective way to quickly replenish the firefighting sand in the sand pool to the sandblasting firefighting devices in existing substations to participate in fire fighting.

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