| 摘要 |
<p>The air inlet device (7), for a system comprising a hydropneumatic reservoir (3) mounted on a pipe, is positioned so that the air is let into a zone containing water at an absolute pressure which is below or slightly above atmospheric pressure, and is actuated only when the hydropneumatic reservoir needs re-filling with air. The inlet device comprises an air feed tube (8), mounted on the pipe between the water intake and a pump (2) equipped with an electrically-driven air control valve and a flow limiter. The pipe is equipped with a vacuum generator upstream of the hydropneumatic reservoir, e.g. in the form of a Venturi tube.</p> |
