Gate hydraulic dual redundancy control device and method

Abstract

The invention discloses a gate hydraulic dual redundancy control device and method. The device is used for implementing the method. A pressure pipeline of the device enables a pressure oil tank to becommunicated with P ports of two electromagnetic valves, a P port of a redundancy valve seat and an X cavity of the redundancy valve seat, A1 of the electromagnetic valve EM-1 to be communicated withP2 of the electromagnetic valve EM-2, A2 of the electromagnetic valve EM-2 to be communicated with an Y cavity of the redundancy valve seat and A3 of the redundancy valve seat to be communicated witha pressure application hole of a gate execution mechanism; and a non-pressure pipeline enables an oil tank to be communicated with T ports of the two electromagnetic valves and a T port of the redundancy valve seat as well as L3 of the redundancy valve seat and a pressure release hole of the gate execution mechanism to be communicated with the oil tank. By adopting the gate hydraulic dual redundancy control device and method, the two two-position three-way electromagnetic valves are connected to the redundancy valve seat according to a logic or and nor relationship, and lifting or falling of agate is controlled through an excitation or excitation loss state of the two electromagnetic valves.

Description

technical field [0001] The invention relates to the field of hydraulic control, in particular to a gate hydraulic double redundancy control device and method. Background technique [0002] The performance and reliability of the solenoid valve play a vital role in the hydraulic control system, and the commonly used direct-acting solenoid valve is widely used in the power generation industry. In the hydropower generation industry, hydraulic control is frequently used in the operation of governors, turbines, ball valves, tail gates and other systems. With the rapid development of my country's power grid, higher requirements are put forward for the automation and reliability of the unit. At present, the hydraulic circuit of many pumped storage units at home and abroad is controlled by a single solenoid valve. The failure rate and life of the key solenoid valve during use will directly affect the operation of the unit. Seriously, it will lead to failure to start and stop, and tri...

AI Technical Summary

Problems solved by technology

At present, the hydraulic circuit of many pumped storage units at home and abroad is controlled by a single solenoid valve. The failure rate and life of the key solenoid valve during use will directly affect the operation of the unit. Seriously, it will lead to failure to start and stop, and tripping, such as Ball valve opening solenoid valve, emergency stop solenoid valve, gate opening solenoid valve

In order to avoid the risk of the unit being unavailable due to the failure of a single solenoid valve, a hydraulic system with redundant control of double solenoid valves is designed, which can effectively avoid the failure of starting and stopping, and tripping caused by the failure of a single solenoid valve.

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