2results about How to "Accurate automatic adjustment" patented technology

This invention provides a regulating device for a butterfly valve orifice plate for mixed gas in a coke oven basement, comprising a valve body, a continuous regulating mechanism for the butterfly valve, and a fixed throttling mechanism for the orifice plate. The inner cavity of the valve body serves as a gas flow channel, and the continuous regulating mechanism for the butterfly valve is installed within the channel perpendicular to the gas delivery direction. The continuous regulating mechanism for the butterfly valve is a structure that continuously and steplessly adjusts the opening and closing of the butterfly plate through a pneumatic actuator to achieve different gas flow rates. The fixed throttling mechanism for the orifice plate is an integrated throttling structure arranged within the channel along the gas delivery direction, and is sealed by a self-tightening lever clamping mechanism. The invention also provides a method for controlling gas flow using this device, which solves the problems of coarse regulation, the need to replace the orifice plate, and operational hazards associated with traditional orifice plate valves. It achieves continuous and precise regulation of gas flow without the need to replace the orifice plate, significantly improving the coke oven heating control level and system safety. It is particularly suitable for coke oven basement gas pipeline systems where space is limited and safety requirements are extremely high.

The application provides a power-oriented electric propulsion gas supply self-learning closed-loop control system and method, which is composed of a storage and supply unit, a power processing unit, a control unit and an electric thruster; the working current of the electric thruster is monitored, if the current is lower than the lower limit, the valve is opened to supplement the gas for a certain time length, the current value of the electric thruster working maximum 3s sliding average within a certain time length is monitored after the gas supplement is completed, and the gas supplement time length is adjusted according to the maximum value with a certain step distance, and the step distance is corrected according to the number of adjustments. The application solves the working condition drift problem of the electric thruster caused by the state change of the spacecraft or the erosion of the thruster itself in the prior art by using the multi-stage self-learning adjustment mode, under the premise of limited on-orbit computing resources, and collects the working parameters for data accumulation and open-loop control of the fault mode.