Safe and reliable whole factory public water supply method and system

Abstract

The invention belongs to the technical field of water resources and hydropower engineering, and particularly relates to a safe and reliable whole factory public water supply method and system. Main transformer no-load water supply and fire fighting water supply are realized through a water taking opening in a lower storage reservoir arranged in a preliminary stage water supply unit; in addition, after a machine unit of a water pumping energy storage power station is put into production, the water taking opening in the lower storage reservoir can be permanently sealed and blocked; through a water taking opening formed in a tail water accident gate, the problem that a whole factory public water supply system directly communicates with the lower storage reservoir is solved; the water taking reliability of the whole factory public water supply system in the preliminary building stage and in the normal operation process of the water pumping energy storage power station is guaranteed; in addition, the system is provided with at least one later stage water supply unit; during the overhaul of a certain power station machine unit, either the preliminary stage water supply unit or the laterstage water supply unit can continuously operate; and the flow cutoff of a water taking pipe of the whole factory public water supply caused under the condition that the tail water accident gate needsto be closed, and a flow passage needs to be evacuated to perform power station machine unit overhaul is avoided, so that the reliability of the water pumping energy storage power station during overhaul is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a safe and reliable public water supply method and system for the whole plant, which is suitable for a pumped storage power station developed at the tail. Background technique [0002] The public water supply system of the whole plant of the pumped storage power station is for some intermittent water users in the plant who do not allow the water pressure to be too high (such as SFC coolers, water-cooled air compressor coolers, underground plant air conditioner coolers, main water supply, etc.) or fire-fighting water (fire-fighting for underground powerhouses, fire-fighting for generator motors, fire-fighting for main transformers, etc.) water supply. In the early stage of construction when the power plant unit has not yet been put into operation, generally only the main transformer needs water for no-load water supply and fire prot...

AI Technical Summary

Problems solved by technology

With the extension of the operation time of the power station, once the seal of the first valve connected to the draft pipe on the public water supply main pipe of the whole plant in the main plant leaks due to aging problems, the water flow will not be able to be cut off, and the risk of flooding the plant will occur

At the same time, the replacement and maintenance of the valve and the pipeline before it can only be carried out by draining the water from the lower reservoir below the public water intake of the whole plant, which brings great difficulties to the operation and maintenance of the power station.

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