High head radial gate pneumatic active water-stopping system

Abstract

The invention relates to a high-head radial gate pneumatic active type water sealing system used for controlling the opening and closing of a pressurized water seal in the position of a gate in a power plant, which comprises an air compressor, a pressure storage tank, control valves communicated with the pressure storage tank, and a pressurized water seal. Three ways of pipelines are arranged at the upper end of the pressure storage tank, and a pressure display controller is connected with a stop valve to form a first way of pipeline; a safety valve is connected with a stop valve to form a second way of pipeline; a pressure gauge is connected with a stop valve to form a third way of pipeline, and the air outlet of the pressure storage tank is arranged at the lower end of the pressure storage tank. The front part of the pressure storage tank is communicated with the air compressor, a temperature signal indictor, a stop valve, a check valve and another stop valve are arranged between the air compressor and the pressure storage tank, the rear part of the pressure storage tank is communicated with the pressurized water seal, a magnet directional valve is arranged between the pressure storage tank and the pressurized water seal, the front pipe and the rear pipe of the valve are communicated with pipelines, the other pipe is communicated with a flow control valve and an air outlet, three ways of branch pipelines are arranged between the magnet directional valve and the pressurized water seal, the first way of the pipeline is an emergency air outlet; a contact pressure gauge and a stop valve are arranged on the second way of the pipeline; a pressure transmitter and a stop valve are arranged on the third way of the pipeline. The water sealing system has the advantages of simple structure, low cost, sensitive reflection, simple failure predication, high automation level and reliable operation in the cold area under low-temperature environment.

Description

1. Technical field: [0001] The invention relates to a high-head arc door pneumatic active water-stop system for controlling the opening and closing of a pressurized water seal at a gate of a power station, belonging to the field of hydraulic engineering. 2. Background technology: [0002] The water sealing system of the arc gate refers to the use of the filler between the gate and the gate groove to solve the water sealing performance of the gate that can be opened and closed after closing. The conventional water-stop type is to use rubber as a filler to install on the gate, through the pre-compression of the rubber to solve the water sealing performance after the gate is closed. There will be no damage to the rubber due to the friction between the rubber and the door groove, but under high water head, due to the contradiction between the compression of the rubber and the friction against the door groove, it is impossible to ensure a good water sealing effect and ensure that...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a combination of a pneumatic system and the existing water seal structure to solve the reliability, practicability and easy realization of automatic control of the high head arc door water stop system

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