Water pump control system used for low water period of power plant construction

Abstract

The invention relates to the field of water supply control, in particular to a water pump control system used for the low water period of power plant construction. The water pump control system comprises a main pump and a standby pump which are located at two water sources. The main pump and the standby pump are connected with a water tank of a living area through pipelines. A flow switch K2 is mounted at a main water inlet pipe in front of the water tank and controls starting and stopping of the water pumps according to the flow. A control circuit comprises a main switch CB, a main pump contactor KM1 and a standby pump contactor KM2, wherein the main pump contactor KM1 and the standby pump contactor KM2 are in parallel connection and are both connected with the flow switch K2. A normally-closed contact of the standby pump contactor KM2 is in series connection with the main pump contactor KM1. The two water pumps are arranged to operate respectively. When the flow of the main pump is reduced, the main pump stops operating, and meanwhile the standby pump is automatically started. When the flow of the standby pump is reduced, the main pump and the standby pump stop operation simultaneously. After water level of a water well recovers in a certain time, control circulation can be repeated till the water tank is injected to the standard water level, and overburning of the water pumps is avoided.

Description

technical field [0001] The invention relates to the field of water supply control, namely a water pump control system used in the dry season of power station construction. Background technique [0002] In the existing technology, the construction of pumped storage power stations has been booming in recent years. Since the water resources of pumped storage power stations can be recycled, the natural runoff only needs to meet the needs of reservoir evaporation and cooling of some equipment. Therefore, pumped storage power stations It can be built in areas where water is not abundant. After the construction of the power station, the domestic water can be taken from the built reservoir, but during the construction period of the power station, the domestic water can only be obtained from underground water resources through wells. In the dry season between spring and summer, there is a risk of the water intake pump being burned due to the drop in water level. [0003] When the o...

AI Technical Summary

Problems solved by technology

During the dry season, as long as the water tank is not filled to the standard water level, the power contactor of the water pump will always be closed, resulting in frequent burnouts. As a result, the water supply in the living area of ​​the permanent camp can only be used in a limited amount, which can only meet the needs of the canteen and a small amount of domestic water.

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