Stepless adjustment of reciprocating machine
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Variable-speed control system for reciprocating machines: The controller’s step-controlled signal output is converted into a 4-20mA signal for the variable-speed control system; this signal is then transformed into electronic commands that are sent via RS485 to the electrical chamber of the actuator, thereby causing the intake valve to close. What is the function of the top dead center TDC signal? What is the timing at which the intake valve closes? When does the solenoid valve operate, so that the gas that has not been compressed (and how is this amount calculated) can flow back into the intake chamber? Which expert can help resolve this mystery?
I’m really confused by what you’re saying. By ‘stepless adjustment,’ you probably mean something similar to variable frequency control. I’ve encountered such a system before; it wasn’t a reciprocating compressor (it was a twin-screw compressor), but there was a bypass circuit installed next to the compressor’s chamber, with a shuttle valve used to regulate the amount of compressed gas that returned to the inlet. Is this what you’re referring to? If you mean that, we can discuss it further with you. This type of compressor claims to be energy-efficient and ensures that the compressor never goes into unloaded mode, but in reality it is not as energy-efficient as variable-frequency compressors.