Factors influencing the volume of crude argon liquid in small air separation units

The principle of expander with motor brake in air separation plant is to control the speed of expander by braking torque generated by motor generator braking state. Once the brake motor fails, the expander speed will lose control and overspeed will occur. At this time, it is necessary to automatically open the protection and control system. The principle is that the speed measuring motor will send out the overspeed signal to cut off the three-way solenoid valve. The three-way solenoid valve directly controls the air open pneumatic butterfly valve at the inlet of the expander, so that the butterfly valve is quickly closed and the air inlet is cut off. At the same time, the rotation of the valve rod touches the stop and limit switch, so that the power supply of the expander motor is cut off and the safe shutdown is realized.

The small air separation unit screw chiller is named screw chiller because its key component compressor is screw type. Gas through the screw chiller unit, the evaporator out of the gas refrigerant, after the compressor adiabatic compression, into a high temperature and high pressure state of the gas. The compressed gas refrigerant is cooled and condensed in the condenser at medium pressure, which changes into liquid refrigerant after condensation. After condensation, the refrigerant is changed ...