| 摘要 |
<p>A fluid cylinder has a fluid pressure regulator (24) depending from the cylinder outlet and comprising a fluid inlet (44); a fluid outlet (50); a first fluid flow path (34) between the fluid inlet and the fluid outlet; a valve seat (46) positioned in the first fluid flow path (34) and dividing the fluid inlet (44) and the fluid outlet (46); a valve element (54) regulating flow through the valve seat (46); an expandable tubular membrane (56) defining an inflatable fluid cavity (62)having a wall portion (60) that moves responsive to inflation and deflation of the cavity (62); a second fluid flow path communicating between the cavity (62) and a source of pressure outside the cavity; and a link (48) transmitting the movement of the wall portion (60) to the valve element (54), thereby moving the valve element (54) with respect to the valve seat (40) responsive to inflation and deflation of the cavity (62). Preferably, the expandable membrane (56) is isolated from fluid within the container (12) by a rigid housing (66) with the space (64) between the housing (66) and the membrane (56) retained at a predetermined pressure.</p> |
