Power station emergency gate using inverted hydraulic hoist

Abstract

The invention discloses a power station emergency gate using an inverted hydraulic hoist, comprising a hydraulic hoist. and a gate body arranged below a dam, wherein the hydraulic hoist comprises an oil cylinder, an open-close bracket, a hydraulic pump station and a control apparatus, wherein the open-close bracket is arranged at the top of the dam, the hydraulic pump station is arranged on a gate maintenance platform, the end part of a piston rod of the oil cylinder is pivoted with the open-close bracket; the oil cylinder body is arranged in the gate body and pivoted with the top of the gate body through two connecting rods with the same structure symmetrically arranged at two sides of the upper end of the cylinder body, a built-in displacement sensor is arranged at the end part of the piston rod, waterproof proximity switches are arranged at two sides of the gate body, and the external surface of the cylinder body is provided with a metal thermal spraying anticorrosive coating. The invention reduces the mounting height of a dam crest, realizes the built-in oil pipe of the oil cylinder without affecting dam surface sceneries, and can slightly swing to adapt the gate displacement because the cylinder body, the gate body and the two connecting rods with the same structure are pivoted with each other to form a four-bar structure.

Description

technical field [0001] The invention relates to a water gate, in particular to an emergency gate of a hydropower station. Background technique [0002] The power station accident gate is used to close the door with moving water when an accident occurs in the unit or flow channel to prevent the accident from expanding; when the unit needs to be overhauled or the power generation is stopped for a long time, the gate is closed in still water to block water and sand. Existing power station emergency gates include hoist gates, conventional hydraulic gates and portal gates. Among them, the hoist gate is opened and closed, and the height of the machine room is very high above the dam surface, which affects the landscape of the dam surface; the operation time of the gate crane is long, the workload is heavy, and remote control cannot be realized, which is not convenient for the operation and management of the project; the conventional hydraulic hoist The gate and the piston rod are...

AI Technical Summary

Problems solved by technology

Among them, the hoist gate is opened and closed, and the height of the machine room is very high above the dam surface, which affects the landscape of the dam surface; the operation time of the gate crane is long, the workload is heavy, and remote control cannot be realized, which is not convenient for project operation and management; conventional hydraulic hoist The gate, the piston rod is connected with the gate lug, and the oil cylinder protrudes very high from the dam surface, which still affects the appearance of the dam surface. In addition, because the oil cylinder is a slender rod, it needs to be reinforced against tilting and lightning protection.

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