A mechanical stroke indicating device for hydraulic steel gates in hydropower station unattended mode

Abstract

The present invention provides a hydraulic steel gate mechanical stroke indicator device in the unattended mode of a hydropower station, which includes a hydraulic cylinder and a support plate for connecting the hydraulic steel gate, and a first guide pulley is installed on one side of the upper surface of the support plate. A second guide pulley is installed on the side of the upper surface of the support plate away from the first guide pulley, an indicator plate is fixedly connected to a side of the support plate close to the second guide pulley, and the head of the piston rod of the hydraulic cylinder is connected with a A steel wire rope, the end of the steel wire rope away from the hydraulic cylinder goes around the reel, the first guide pulley, the second guide pulley in turn and extends through the first rope threading hole to the limit groove, and the end of the steel wire rope in the limit groove is connected to There is a heavy hammer. Compared with the prior art, the present invention has the following beneficial effects: realize the conversion of the telescopic displacement of the hydraulic cylinder piston rod into the displacement of the heavy hammer through the rotary motion of the reel, and output it on the indicator board, which is convenient Staff on duty get information in a timely manner.

Description

technical field [0001] The invention relates to a mechanical stroke indicating device for a hydraulic steel gate in an unattended hydropower station, and belongs to the technical field of hydropower stations. Background technique [0002] The unattended mode is an advanced stage of the reform and development of the duty mode of modern large-scale hydropower stations, and it has higher requirements for the equipment reliability and automation level of hydropower stations. The water inlet accident door system of the existing hydropower station is usually equipped with an electrical quantity encoder to detect the opening of the water inlet accident door. When the accident door falls abnormally and other accidents occur, the unit can be shut down in an emergency. In the unattended mode, only the electrical quantity encoder is used to monitor the opening of the emergency door, and the measurement method is single, while the opening of the emergency door slides 1 / 3, 2 / 3 and other ...

AI Technical Summary

Problems solved by technology

In the unattended mode, only the electrical quantity encoder is used to monitor the opening of the emergency door, and the measurement method is single, while the opening of the emergency door slides 1 / 3, 2 / 3 and other measuring points are used for emergency shutdown of the unit. When the encoder fails , the opening of the accident door is lost monitoring. If the accident door falls abnormally at this time, the on-duty personnel will not be able to obtain information in time, and will not be able to start the emergency shutdown process in time, delaying the handling of the accident, which will cause accidents such as non-stop of the unit

At the same time, when the unit is overhauled, if the measuring device is inaccurate, it is impossible to judge whether the gate is fully closed, which will bring safety hazards to the overhaul work

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