Process method to deal with the failure of the oil cut-off solenoid valve

There is an oil shut-off valve between the oil filter and the refrigeration compressor. When the oil cutoff valve cannot be opened, due to the wetting and cooling of the large-diameter solenoid valve diaphragm vacuum pump, the temperature of the refrigeration compressor rises rapidly after starting, and it may automatically shut down.

    Remove the temperature plug on the exhaust pipe end of the refrigeration compressor server, you will find the dry diaphragm vacuum pump outside the plug, and white smoke will fly out of the hole. Remove the oil cut solenoid valve and gently rotate the high temperature solenoid valve seat with your fingers to see if it can facilitate front and rear, left, and right calibration and easily calibrate it. If it is difficult to rotate or return, the shutoff valve needs to be further disintegrated. If there is oil on the valve seat or valve hole. It should be polished with water and sandpaper until it can roll easily; if the torsion spring breaks or there is dirt jamming such as carbon deposits, it will also endanger the fitness exercise of the valve seat. At this time, the torsion spring must be removed or the oil solenoid valve should be dismantled as a whole.

    The working medium of high pressure solenoid valve is generally N2, helium, xenon, liquefied petroleum gas (such as NH3) and so on. The principle of the water heater solenoid valve is: when the solenoid coil is connected to the power supply, the solenoid coil creates sufficient magnetic force to get rid of the torsion spring and the working pressure of the medium, and then promotes the armature fitness exercise, the gate valve opens, and the medium passes through the armature through the gate valve channel during work Pass the flow channel and discharge from the middle and downstream. When the inductance coil is powered off, the magnetic field force subsides, and the armature is calibrated under the action of the torsion spring force and the working pressure of the medium, and then returns to the closed position to produce tightness and disconnect the fluidity of the medium.