Introduction of measures for compressor pressure protection

Introduction of measures for compressor pressure protection Measures for compressor pressure protection include the following: 1. Control of suction and exhaust pressure When the compressor is running, due to the system or the compressor itself, the discharge pressure may be too high or the suction pressure may be too low. For this reason, the suction and discharge pressures need to be controlled. The common controller is not high and low pressure controller, it is composed of high pressure control part and low pressure control part. When the exhaust pressure exceeds a given value, the high-pressure control part acts to cut off the power of the compressor to stop it; when the suction pressure is lower than the given value, the low-pressure control part acts to cut off the power of the compressor to stop it. The compressor shuts down; sound and light alarm signals will also be issued at the same time. 2. Safety valve To prevent refrigerant from leaking to the atmosphere, a closed safety valve is used. The upper side of the valve disc bears the exhaust pressure, and the lower side receives the suction pressure and the spring force of the spring. When the exhaust pressure is too high, the valve disc moves downward to open the lateral hole at the lower part of the valve seat, and the high-pressure gas flows into the suction chamber through this lateral hole and the lateral hole on the valve body. When the exhaust pressure is lower than the specified value, the valve disc moves upward under the suction pressure and the elastic force of the spring to close the exhaust pipe. The opening pressure of the safety valve is adjusted with bolts. 3. Safety film Install a safety diaphragm between the suction and exhaust chambers. When the difference between the suction and exhaust pressure exceeds the specified value, the diaphragm ruptures and the exhaust pressure decreases. The filter screen is used to catch the broken diaphragm to protect the compressor. 4. Lubricating oil pressure difference controller The difference between the oil pressure at the outlet of the oil pump and the oil pressure in the crankcase. In order to protect the good lubrication of the moving parts of the compressor, and to ensure the normal operation of some compressor air volume control mechanisms (such as hydraulic-tie rod control mechanisms), the low-pressure inlet and high-pressure outlet on the controller must be connected. When the pressure difference between the inlet and outlet of the hydraulic pump is too high or too low, the controller acts to cut off the power of the compressor and the motor stops rotating.