초록 ▼

An installation for connection to a water piping system comprising a water main and at least one branch pipe, for preventing a stagnation of water inside that branch pipe. A pumping unit is connected to first and second openings in the far end of the branch pipe for pumping water samples out of the

An installation for connection to a water piping system comprising a water main and at least one branch pipe, for preventing a stagnation of water inside that branch pipe. A pumping unit is connected to first and second openings in the far end of the branch pipe for pumping water samples out of the branch pipe through the first opening, and back into the branch pipe through the second opening. The installation also comprises a conduit extending inside the branch pipe from the second opening to a proximity of the water main. The pumping unit is continually or intermittently operated for sampling a portion of the still or slow moving water at the far end of a branch pipe, and for pumping these water samples near the water main where the water flow inside the pipe is more active. Such circulation of water in a branch pipe prevents the stagnation of water at the far end of the branch pipe. In another aspect, there is provided a method for preventing stagnation of water in a water supply system. The method comprises the steps of extracting water samples from the far end of the branch pipe relative to the water main and pumping the water samples into the near end of the branch pipe through a branch valve and toward the water main.

대표청구항 ▼

[ I claim:] [1.] An installation for connection to a water piping system comprising a water main and at least one branch pipe, for preventing a stagnation of water inside said branch pipe; said branch pipe having a near end connected to said water main and a far end at a distance from said near end;

[ I claim:] [1.] An installation for connection to a water piping system comprising a water main and at least one branch pipe, for preventing a stagnation of water inside said branch pipe; said branch pipe having a near end connected to said water main and a far end at a distance from said near end; said installation comprising:a pumping unit comprising a pump enclosed in a tubular casing buried in the ground near said far end of said branch pipe, said pumping unit being connected to said branch pipe and having means for extracting water sample from said far end and means for ejecting said water sample into said near end;such that when said pumping unit operates, water samples from said far end are pumpable toward said water main for preventing stagnation of water in said far end of said branch pipe.