Electrohydraulic synchronous cylinder type valve servo synchronous control system

Abstract

A synchronous control system for an electro-hydraulic synchronous cylinder-type valve servomotor has a mechanic over-speed protection device which is connected with a cross hydraulic valve. One end of the cross hydraulic valve after being parallel connected with a gate valve is connected with an oil pressure unit and the other end is connected with one endpoint of one or a plurality of cylinder valve servomotor structures. The oil return device, the fuel supply pump unit, the cross solenoid valve, the oil pressure unit and the hydraulic synchronous motor unit are connected successively and the hydraulic synchronous motor unit is also connected with the cross solenoid valve, wherein, the oil return device is also connected with one endpoint of one or a plurality of cylinder valve servomotor structures; the hydraulic synchronous motor unit is also correspondingly connected with one endpoint of one or a plurality of cylinder valve servomotor structures. The hydraulic synchronous motor unit consists of one or a plurality of hydraulic synchronous motors which have the same structure as the cylinder valve servomotor. The system has a simple whole structure, is easy to repair and maintain, can guarantee the safe and stable operation of the system and can still work normally under the conditions of low oil pressure, power source failure, etc.

Description

technical field [0001] The invention belongs to a synchronous control system for cylinder valve servomotors of hydraulic turbines, in particular to an electro-hydraulic synchronous cylinder type capable of simultaneously controlling multiple servomotors to achieve synchronization, effectively ensuring consistent main oil supply volumes and consistent oil discharge volumes Valve servomotor synchronous control system. Background technique [0002] At present, most of the existing cylinder valve synchronous control systems are mechanical synchronous control systems. It connects multiple servomotors through mechanical levers and screw rods to restrict each other. Its mechanical structure is complicated, and installation and maintenance are very inconvenient. Auxiliary control system, but because its stability has not been recognized (hydropower station control system, especially the water inlet valve control system requires very high stability and fault tolerance), so there has ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the existing cylinder valve synchronous control systems are mechanical synchronous control systems. It connects multiple servomotors through mechanical levers and screw rods to restrict each other. Its mechanical structure is complicated, and installation and maintenance are very inconvenient. Auxiliary control system, but because its stability has not been recognized (hydropower station control system, especially the water inlet valve control system requires very high stability and fault tolerance), so there has been no suitable control system to control the barrel valve Synchronization of servomotors

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