A public water supply method and system for the whole plant

Abstract

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. The invention uses the water intake in the lower reservoir in the initial water supply unit to supply the main transformer with no-load water supply and fire-fighting water supply, and after the unit of the pumped storage power station is put into operation, the water intake in the lower reservoir can be permanently blocked and passed through the tailwater accident gate In this way, the problem of direct connection between the public water supply system of the whole plant and the lower reservoir is solved, and the water intake reliability of the public water supply system of the whole plant is guaranteed during the initial stage of construction and normal operation of the pumped storage power station; For the water supply unit, when a certain power station unit is overhauled, one of the initial water supply unit or the later water supply unit can continue to operate, avoiding the need to close the tail water accident gate and drain the flow channel for power station unit maintenance. The water intake pipe of the public water supply is cut off, thereby ensuring the reliability of the pumped storage power station during maintenance.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a public water supply method and system for the whole plant. 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 (underground plant fire-fighting, generator motor fire-fighting, main transformer fire-fighting, 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 protection. The public water supply system adopts the centralized water supply method of water intake from the lower ...

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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