A large and medium-sized hydraulic gate emergency control system and mechanical deviation correction device

Abstract

The invention discloses a large and medium hydraulic gate emergency control system and a mechanical type deviation rectifying device. The large and medium hydraulic gate emergency control system comprises a gate, a power control device, the mechanical type deviation rectifying device, a bypass control device and a power supply device, wherein left and right sides of the gate are respectively connected to a left stroke steel rope for detecting left-side stroke of the gate, and a right stroke steel rope for detecting right-side stroke of the gate; the left stroke steel rope and the right stroke steel rope are connected to the mechanical type deviation rectifying device; a balance beam is arranged in the mechanical type deviation rectifying device; the mechanical type deviation rectifying device is used for converting stroke difference of the left stroke steel rope and the right stroke steel rope into left-right movement of the balance beam; the two ends of the balance beam of the mechanical type deviation rectifying device are provided with limiting switches; and the limiting switches and the power control device are connected to the power supply device through the bypass control device respectively, so that a gate control loop is formed. The gate control system disclosed by the invention can effectively interfere an on-off control signal, so that the deviation rectifying is automatically realized, the horizontal operation of the gate is kept, and the reliability and resistance to damages by hazards are extremely strong.

Description

technical field [0001] The invention belongs to the technical field of gate control, and in particular relates to an emergency control system and a mechanical deviation correction device for large and medium-sized hydraulic gates. Background technique [0002] Gates are important storage / discharge control equipment in water conservancy projects. Most of the large and medium-sized gates use hydraulic systems as servo power because of their wide spans and high quality. The current opening and closing control technical schemes of hydraulic gates mostly adopt the basic structure of "opening degree / travel sensor + gate control PLC automation component + communication bus". The core function logic can be briefly described as: establish opening and closing state perception with "opening / travel sensor", establish management logic with "PLC industrial automation module / component", and establish signal interaction with "communication bus". This technical solution has high control pr...

AI Technical Summary

Problems solved by technology

Any single-point failure in the entire control link may cause gate control failure and cause accidents;

[0004] The sensor components of the existing technical solutions are relatively fragile. The "hydraulic gate control technical solution" based on the PLC system mainly detects the opening (instantaneous position), stroke (travel distance), balance (left and right stroke) of the gate through the "opening / travel sensor". Poor), this kind of sensor transmits the current signal through the encoder, there are problems such as device aging, signal attenuation, susceptibility to environmental interference and lightning damage, etc. Once a fault occurs, the gate cannot be opened and closed normally, and there is a certain risk

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