| 摘要 |
<p>@ The invention disclosed relates to the art field embracing positive displacement reciprocating compressors of the type featuring hydraulic drive, and sets out to simplify the construction of such units, rendering them more functional at the same time. Four coaxial bulkheads (1, 2, 3, 4) are adopted, set apart one from the next by three cylinder barrels (5, 6, 7) and three pistons (8, 9, 10) which are mounted to a common rod (11) and reciprocated thus, each in its respective barrel; the central piston (9) and barrel (6) are of either greater or smaller diameter than the remainder. Hydraulic oil from a power pack driving the compressor flows alternately into chambers (14, 15) which are occupied by the rod (11), and bounded at one end by one of the pistons (8, 10) of smaller or greater diameter.</p> |
