Working of Compressor/Reciprocating Pump

The effect is dampened by compressed air in the tank.

Need just a little more information to help you.

What type of unit are you dealing with, 2 stage or single.

What is the motor loaded AMP readings.

Is the unit loading up. (valves working).

There are several ways of looking at this problem. But if you can get these your headed in the right direction for help.

RPM, you are not going to visually see the hesitation on the intake stroke. It's there you will need sensitive gauge to see it. Even in the intake stroke there will be some flow. As the air is compressed in the cylinder it is force through a check valve into smaller lines. So during the intake stroke the air would be expanding out of the line.

Cau u explain me in brief, so that i can understand or u can send me a link regarding the subject where i can get brief answer. i would be thankfull if u can reply me

sinivas

Generally these compressors run at around 700 rpm. Some more some less. At 600 rpm that's 10 strokes a second. That means the intake stroke is going to take 1/20 of a second. You expect to see that? And in order for the compressor to function properly the pressure created on the compression stroke has to be greater then the pressure in the vessel or line it's being pumped into. Or the pump will stall and over load the motor. Since the pressure is greater it will take a fraction of a second to equalize. Since being pumped by a check valve the only area it has to go to equalize is out the output line. So during this fraction of a second it takes for the intake stroke. You have air still coming out until pressure equalizes.

Please read the article Compressor: Working of Reciprocating Air Compressor?

Hope this will help you.

DEAR SIR,

I AM THANKFULL BUT THE THING IS THAT I AM HAVING A DOUBT THAT THERE IS NO DISCHARGE WHEN THERE IS SUCTION STROKE. THAT MEANS THE AIR IN THE COMPRESSOR IS DISCHARGED ONLY IN COMPRESSION BUT NOT IN SUCTION STROKE. BUT DISCHARGE IS HOW UNIFORMLY DONE.

SRINIVAS

The compressor is running at 800 or more rpm so physically we don't see the strokes but the discharge in reciprocating compressor is not purly uniform.There is break for fraction of second in bewteen suction and discharge.Due to very high running it looks like uniform.Because of this ununiform stroke the air we got from compressor is pulsating and we need pulsastion dampner for reciprocating action.In reciprocating compressor technology,receiver tank is used as dampener.

The valves are leaking.

The rings are shot.

Turn it by hand - if you can't feel major compression, it's one or both of the above.