PISTON SEALING DEVICE

摘要

The displacer of willmeier pump, actuated by pressure changing of gases filled in three separated spaces, has two separating sections for assembling a number of sealing bodies according to respective conditions. The structure comprises high-temp./low-temp. displacers (3)(4) in respective cylinders (1)(2) for moving high-pressure gases in sealed space; second displacer (6) for keeping sealing means under first displacer (5) of the displacers (3)(4); a plurality of sealing means (9) provided with sealing bodies (7)(7') having inner walls of the cylinders (1)(2), stationary body (8) for fixing the bodies (7)(7'); fastening bodies (10)(10') for assemblying the means (9) with the placers (3)(4).