公开(公告)号：US12169022B2

公开(公告)日：2024-12-17

申请号：US18184753

申请日：2023-03-16

Applicant: Borsig ZM Compression GmbH

Inventor： Heinz Baumann ,  Andi Ziermann

IPC: F16J15/18 ,  F04B39/00 ,  F04B53/16

Abstract: A piston compressor includes a crankcase (11), a crankshaft (12), connecting rods (13), a crosshead (14) with an arranged piston rod (15) and a piston (16), dry-running guided in a cylinder (17). Valves (18) are provided. A piston rod sealing device (19), around the piston rod between the cylinder (17) and the crankcase, includes a gland device (22), arranged in a gland housing (21), inserted into a piston compressor housing (20). The gland device includes a gland jacket (24) pushed into a gland (23) limiting, with the piston rod, a sealing gap (25), which is open over a common longitudinal section, has a width in the μm range and allows a leakage flow (26) of the compressed medium therethrough. The gland and the gland jacket are formed of different materials with a resulting coefficient of thermal expansion essentially the same as the material of the piston rod.