公开(公告)号：WO2016105926A1

公开(公告)日：2016-06-30

申请号：PCT/US2015/064375

申请日：2015-12-08

Applicant: DRESSER-RAND COMPANY ,  EATON, Elmer B. ,  CLIFF, Malcolm ,  SANDHAM, John K. ,  BURDICK, Waldo E.

Inventor： EATON, Elmer B. ,  CLIFF, Malcolm ,  SANDHAM, John K. ,  BURDICK, Waldo E.

IPC: F16J1/00 ,  F16J1/12 ,  F02F3/00 ,  F04B39/00 ,  F04B53/14

CPC classification number: F16J1/12 ,  F04B53/14 ,  F16J1/005 ,  F16J1/008 ,  F16J7/00

Abstract: A piston assembly may include a piston rod and a piston disposed on the piston rod. The piston may include a frame end cap defining a through-bore for receiving the piston rod, and the frame end cap may form a first end of the piston. The piston may include an outer end cap defining a through-bore for receiving the piston rod, and the outer end cap may form a second end of the piston. The piston may also include a center support defining a through-bore for receiving the piston rod. The center support may be disposed between the frame end cap and the outer end cap, and an outer surface of the piston rod and an inner circumferential surface of the center support may define a radial gap.

Abstract translation: 活塞组件可以包括设置在活塞杆上的活塞杆和活塞。 活塞可以包括限定用于接收活塞杆的通孔的框架端盖，并且框架端盖可以形成活塞的第一端。 活塞可以包括限定用于接收活塞杆的通孔的外端盖，并且外端盖可以形成活塞的第二端。 活塞还可以包括限定用于接收活塞杆的通孔的中心支撑件。 中心支撑件可以设置在框架端盖和外端盖之间，并且活塞杆的外表面和中心支撑件的内圆周表面可以限定径向间隙。