Emergency oil pond with oil-water separation device

Abstract

The invention relates to an emergency oil pond, in particular to an emergency oil pond with an oil-water separation device for emergency oil discharge under the condition of transformer failure in a large-scale substation. The emergency oil pond with the oil-water separation device comprises an oil storage chamber which is communicated with a fine filtering chamber and a rough filtering chamber respectively through an oil filtering hole of the fine filtering chamber and an oil filtering hole of the rough filtering chamber; bottoms of the fine filtering chamber, the rough filtering chamber anda water discharging chamber are communicated; and the height from the oil filtering hole of the rough filtering chamber to the water level in the rough filtering chamber is greater than that from theoil filtering hole of the fine filtering chamber to the water level in the fine filtering chamber. The emergency oil pond has the following advantage that: transformer oil discharged into the emergency oil pond under the failure condition is separated from mixed liquid of water and oil in the emergency oil pond so as to effectively solve the problem that the water and the oil in the mixed liquid are difficult to separate once directly.

Description

technical field [0001] The present invention relates to an accident oil storage tank, in particular to an accident oil storage tank with an oil and water separation device used for transformer accident oil discharge in a large-scale substation, which belongs to the accident oil collection equipment in the event of a rectification station accident technology field. Background technique [0002] The power supply rectification station of the electrolytic aluminum plant is generally equipped with multiple large-scale voltage-regulating rectifier transformers and power transformers, and the oil volume of a single transformer can reach 40-60 tons. The oil content of all the transformers in the rectification station can reach hundreds of tons. When one of the transformers leaks a large amount of oil in an accident, in order to avoid the accident from expanding, it is necessary to quickly remove the accidental transformer oil safely. According to the regulations, the oil in the acc...

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Problems solved by technology

Large-scale transformers are generally installed in the open air, and usually a large amount of rainwater will be discharged into the underground oil collection tank through the accident oil pit at the bottom of the transformer. Water is mixed with liquid, so it is necessary to set up drainage facilities in the oil sump to separate oil and water to prevent environmental pollution. At present, the underground oil sump used in some designs is usually an underground oil sump that relies on natural drainage. When the transformer in the substation When there are many oil collection ponds or the oil collection ponds are far away, it is difficult to discharge the waste water into the waterway pipe network of the whole plant by means of natural drainage outlets. Therefore, a large amount of rainwater is often poured into the accident oil collection ponds, causing the accident oil collection ponds to become waste water In the event of an accident in the transformer, it is necessary to drain the transformer oil into the accident oil collection pool, which cannot be used

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