Why are the crankshafts of reciprocating compressors arranged at 180 degrees?

2011-09-13View Original

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Why are the crankshafts of reciprocating compressors arranged at 180 degrees?

Reply #22011-09-13

The angle between the curves of two rows is 180 degrees, while that of three rows is 120 degrees. The appropriate angle depends on the structural design of the compressor. Consider that the forces acting on the crankshaft are distributed at equal angular intervals.

Reply #32011-09-13

To balance the inertial force and the inertial torque.

Reply #42011-09-14

So how can we ensure that pistons at all levels reach the dead center position simultaneously?

Reply #52011-09-14

It’s not necessarily 180 degrees; your idea is wrong. Just read a book and you’ll understand.

Reply #62011-09-14

Reply to 4# zhrchr: Each piston cannot reach the dead center at the same time, and this is exactly why the airflow exiting a reciprocating machine is pulsatory.

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