专利汇可以提供Sand-separator for hydroelectric power plant专利检索,专利查询,专利分析的服务。并且PURPOSE:To dispense with a special fresh water source, by installing an intake on a penstock at the side of an upper reservoir rather than a main valve of the turbine as well as installing an outlet on a penstock at the side of the same reservoir. CONSTITUTION:Water reaches a turbine 20 via a penstock 18 and a main valve 19 from an upper reservoir 17 and flows out into a lower reservoir 21 via a draft tube 16 after energizing the turbine. In this turbine, an inlet tube 22 of a sand separator 3 is installed at the side of the said upper reservoir rather than the main valve 19 of the penstock 18 and its intake 23 faces direct toward the upstream. In addition, a sand-flash pipe 15 is installed at the side of the upper reservoir 17 rather than the main valve 19 as well while the sand-flash opening 24 is open at right angles with the pipe wall of the penstock 18. In addition, a jet pump 25 is installed in position midway to the sand-flash pipe 15, thereby discharging sand out of a sand storage chamber 13. A driving water pipe 26 of the jet pump 25 gets connected to a feed pipe 27 of the sand separator 3 and has a pump 28 and a check valve 29 in order to raise pressure of fresh water taken out of the feed pipe 27 in a position at the midway to the latter.,下面是Sand-separator for hydroelectric power plant专利的具体信息内容。
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