| 摘要 |
PROBLEM TO BE SOLVED: To provide a multistage compressor in which a locking piston has been adapted to a compressor of a low-pressure side and a high-pressure side by improving a lip ring.SOLUTION: In a multistage compressor in which a low-pressure compressor (A) and a high-pressure compressor (B) are connected to each other, a piston slidably arranged in a cylinder 1 of the low-pressure compressor, and a piston slidably arranged in a cylinder 2 of the high-pressure compressor are constituted of locking pistons 3, 4, and the locking piston 4 of the high-pressure compressor is provided with a lip ring 14 having a sealing portion 15 elastically deformable to an extent that it comes into contact with an inner surface of the cylinder 2 in at least high-pressure region to perform sealing action. |
