| 摘要 |
<p>A pneumohydropumping installation comprises a two-way pneumohydraulic booster (2) the pneumatic chambers of which are connected with the outlets of a power pneumatic distributor. The hydraulic chambers of the booster (2) are connected with an actuating hydraulic engine (1) through a force and a drain line (14, 15). The booster (2) is provided with pneumatic limit switches (26, 27). The installation further comprises a one-way pneumohydraulic booster (30) provided with a pneumatic limit switch (33). The pneumatic chambers (30a, 30b) of the booster (30) are connected with the outlets of a four-line two-position pneumatic distributor (34). </p> |
