Hydraulic control system for quick water inlet gates of hydroelectric power station

Abstract

The invention relates to a hydraulic control system for quick water inlet gates of a hydroelectric power station. The hydraulic control system is characterized by comprising a first quick water inlet gate control panel, a second quick water inlet gate control panel and a quick water inlet gate control common panel; the quick water inlet gate control common panel carries out automatic and manual start and stop control on two pressure oil pumps and an oil replenishing pump of the hydroelectric power station, pressure build-up valve control and sound alarm control, monitors oil pressure, oil temperature, filtering blockage, an oil level of a main oil tank and an oil level of an oil replenishing tank and carries out hot standby switching on two power sources; the first quick water inlet gate control panel and the second quick water inlet gate control panel respectively complete manual and automatic operation for slowly opening, slowly closing and stopping the first and second quick water inlet hydraulic gates and operation for quickly closing the first and second quick water inlet hydraulic gates; the first quick water inlet gate control panel and the second quick water inlet gate control panel respectively monitor front and back water levels, the opening and full-open and full-close stroke limiting of the first and second quick water inlet hydraulic gates. The hydraulic control system has the advantages that the reliability of the quick water inlet hydraulic gates of units of the hydroelectric power station can be improved, convenience in future maintenance for the control system and future maintenance safety of the control system can be enhanced.

Description

technical field [0001] The invention relates to the technical field of hydropower, in particular to a hydraulic control system for a fast gate of a water inlet of a hydropower station. Background technique [0002] The Jiemian Hydropower Station on the branch of Junxi in the upper reaches of Youxi, Fujian Province is a leading hydropower station with multi-year regulation performance. The power station is equipped with two single-machine 150MW mixed-flow generator sets. The rapid accident door hoist of the water inlet of the street hydropower station was designed by Wuhan Shipbuilding Industry Company. The original brief situation: the fast gate control panel of the water inlet of the street power station unit is controlled by 1 set of PLC in a non-standard screen cabinet and 2 sets of fast gate control systems And one set of hydraulic system shared by two water inlet fast gate control systems, it is impossible to repair and maintain a single fast gate control system, which ...

AI Technical Summary

Problems solved by technology

The rapid accident door hoist of the water inlet of the street hydropower station was designed by Wuhan Shipbuilding Industry Company. The original brief situation: the fast gate control panel of the water inlet of the street power station unit is controlled by 1 set of PLC in a non-standard screen cabinet and 2 sets of fast gate control systems And 1 set of hydraulic system shared by 2 water inlet quick gate control systems, it is impossible to repair and maintain a single quick gate control system, causing inconvenience in system maintenance and repair

Two shutter control system power supplies share one DC24V control power supply circuit, which cannot satisfy power redundancy and reliability

Moreover, the oil level of the high-level oil supply tank of the generator set is only controlled by a start contact and a stop contact through the local programmable control oil pump, and the high-level oil supply tank has no oil spill hole and oil return pipeline, and the fast gate is automatically controlled. Single contact point without redundancy, once there is a refusal or misoperation, the accident will be expanded

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