The displacement issue of diaphragm compressors
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There are three diaphragm compressors with a rated exhaust volume of 600 cubic meters per hour, but in actual operation they can only discharge 200–400 cubic meters per hour, with a minimum of 200 and a maximum of 400 – this level of instability is due to what?
Is it new or old? Check to see if there are any leaks at the connection points.
Check the gas supply to the backend and the opening degree of the valves!
The oil exhaust from the diaphragm must be thorough; check whether there is an alarm for diaphragm leakage pressure； Check if there are any leaks in the safety valve, return valve, etc.?
There are many possible reasons. 1. The valve spring leaf is broken; the rotation of this leaf leads to irregular variations in the valve leakage rate, resulting in unstable exhaust flow. 2. The oil system was not adequately purged and degassed when the unit was put into operation for the first time or after maintenance. Especially in the high-pressure compensation oil circuit, it becomes very difficult to expel air once it gets inside. It is necessary to disconnect the oil circuit and perform crankshaft rotation for exhaust; this may take several hours. 3. The diaphragm ruptures, creating a variable clearance volume between the diaphragm groups; this results in varying working capacity of the diaphragm head, as well as a decrease in its overall working capacity. The traffic performance is unstable and low. 4. Oil pressure regulator failure.