| 摘要 |
<p>A fluid delivery system is described whereby sterile liquid may be delivered efficiently to a number of remote locations while nevertheless maintaining a continuous fluid flow through the system to prevent any bacterial growth. Th e system includes a storage tank feeding a first pipework loop including a fir st pump which urges fluid through said first loop at a first pressure and which returns to the tank, and also includes at least one pipework branch fed from the tank and having a second pump which urges fluid through the branch at a second pressure downstream of the second pump. The system functions efficaciously in that a branch manifold terminates each branch and a return manifold is provided in the first pipework loop. Between these two manifolds are connected one or more supply hoses interrupted by an offtake component which is a simple valve opening through which the fluid can be selectively delivered at the desired location. When one or more offtakes are opened, the conventional fluid flow in the hose which links that offtake to the return manifold is reversed on account of the pressures at which the two pumps in t he firs pipework loop and the pipework branches operate. This type of operation allows for practically 100 % diversity, i.e. that condition where as many or as few offtakes in the system can be opened simultaneously without any practical reduction in the availability of fluid.</p> |
