Question

In a reciprocating compressor, what do the packing rings do?

1) Convert rotary motion to reciprocating motion
2) Prevent gas leakage around the piston rod
3) Contain the liquid for cylinder cooling
4) Keep the piston in alignment

Answer 1

In a reciprocating compressor, packing rings prevent gas leakage around the piston rod and keep the piston in alignment.

Step-by-step explanation:

In a reciprocating compressor, the packing rings serve two main purposes:

1. They prevent gas leakage around the piston rod by creating a seal between the piston and the cylinder wall. This ensures that the compressed gas does not leak out and maintains the efficiency of the compressor.
2. They help keep the piston in alignment and reduce friction between the piston and the cylinder wall. This allows for smooth reciprocating motion and helps extend the lifespan of the compressor.
3. In a reciprocating compressor, the packing rings have a very specific and important function. They are designed to prevent gas leakage around the piston rod as it moves back and forth within the cylinder. The rings ensure that the high-pressure gas on one side of the piston does not escape past the piston rod to the other side or outside the compressor, which would lead to decreased efficiency and the potential for hazardous leaks.