Overflow device of pump station circulation cooling water tank

Abstract

The invention discloses an overflow device of a pump station circulation cooling water tank. The overflow device comprises an overflow pipe connected with the water tank, and a pipe-top elevation at the connection of the overflow pipe and the water tank is arranged below the normal level of the water tank; outgoing water from the overflow pipe flows through an upwardly bent vertical pipe into a water incoming front tank of a drainage pump station; the level elevation of the overflow pipe restores into the normal overflow level elevation through the vertical pipe. The overflow device of the water tank not only solves the problem of flooding possibly caused when a water incoming float valve of the water tank is damaged, even there is no need for setting a water collection pit, the water collection pit and a drainage pump are omitted, operation safety of the pump station is effectively guaranteed, construction and operation cost of the pump station is reduced.

Description

technical field [0001] The invention relates to the field of pumping station circulating cooling, in particular to an overflow device for a pumping station circulating cooling water tank. Background technique [0002] Normally, the circulating cooling water tank will be equipped with an overflow pipe to prevent the water in the tank from overflowing and causing flooding when the water inlet float valve is damaged. Generally, a sump is arranged around the overflow pipe of the water tank, and a water pump is arranged in the sump to collect the water discharged from the overflow pipe of the water tank. [0003] At present, the overflow of the circulating cooling water tank of the drainage pumping station is discharged to the sump. The outlet of the overflow pipe is arranged above the normal water level of the water tank, in case the water inlet float valve is damaged, the water in the water tank overflows and causes flooding. [0004] Under normal operating conditions, when t...

AI Technical Summary

Problems solved by technology

[0005] If the water tank inlet float valve is damaged, and the drainage pump in the sump fails at the same time (this kind of situation has occurred in actual engineering), the water in the water tank will be continuously discharged to the sump through the overflow pipe. Failures can be found in time, which will cause the sump to overflow and cause flooding accidents

If the sump is set in the underground layer, once a flooding accident occurs, it will cause serious consequences, and even cause the pumping station to stop running

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