An energy-saving drainage system for a bulb tubular generator set

Abstract

The invention discloses an energy-saving drainage system for bulb through-flow generator units, and belongs to the technical field of drainage systems of hydropower stations. The energy-saving drainage system is technically characterized by comprising a flow channel layer arranged below all generator units, wherein a temporary storage water tank is formed in the flow channel layer in the length direction, leakage water of all devices in a machine room is connected into the temporary storage water tank through pipelines, a leakage water-collecting well is arranged in the flow channel layer, and the temporary storage water tank is connected with the leakage water-collecting well through an overflow channel; first conical water outlet joints facing the water flow direction of tail water are arranged on the side wall of a runner chamber at the rear of paddles of the generator units respectively; the first conical water outlet joints are connected with the temporary storage water tank through a negative pressure suction pipe, a check valve and an electromagnetic valve are arranged on the negative pressure suction pipe, the electromagnetic valve is connected with a pressure sensor, a detection probe of the pressure sensor is arranged on the inner wall of the runner chamber, and the detection probe and the first conical water outlet joints are located on the same circular ring. The energy-saving drainage system for the bulb through-flow generator units is reasonable in structure, convenient to use and good in effect and is used for drainage of the hydropower stations.

Description

technical field [0001] The present invention relates to a drainage system, more specifically, to an energy-saving drainage system of a bulb tubular generator set. Background technique [0002] The existing bulb tubular power station is designed to generate negative pressure in the blade area of ​​the turbine and its downstream runner chamber and tail water cone. Through the negative pressure, the water flow speed is increased, and the water flow through the blade is recycled and reused. Water energy flowing to the tail water. However, with this structural design, the negative pressure reduces the pressure of the water, causing cavitation to the blades and the runner chamber, that is, after the low-temperature boiling bubble bursts, the surrounding water mass continuously hits the runner chamber, turbine blades and cones. The equipment and structures at these positions will be damaged. In order to solve the problem of cavitation in the prior art, the above-mentioned equipme...

AI Technical Summary

Problems solved by technology

However, with this structural design, the negative pressure reduces the pressure of the water, causing cavitation to the blades and the runner chamber, that is, after the low-temperature boiling bubble bursts, the surrounding water mass continuously hits the runner chamber, turbine blades and cones. shaped tailpipes, causing damage to equipment and structures at these locations

In order to solve the problem of cavitation in the prior art, the above-mentioned equipment and structures are all made of stainless steel. Although the period of use can be extended, the problem of damage also exists

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