| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water service installation capable of avoiding a water failure as much as possible. <P>SOLUTION: A water service installation 1 for intensifying the pressure of water branching from a water main P to supply the water to a structure G includes: a first pump unit 12 in which a plurality of first pressure intensifying circuit sections 16 for intensifying the pressure of the water branching from the water main P and a bypass circuit section 17 are provided in parallel to each other, and a decompression type back flow preventing device 15 is also provided on the secondary side of the first pressure intensifying circuit sections 16 and the bypass circuit section 17; a second pump unit 32 in which a plurality of second pressure intensifying circuit sections 36 are connected in series to one another for intensifying the pressure of the water from the first pump unit 12, and which is provided in a hierarchy different from the first pump unit 12 and connected in series to the secondary side of the first pump unit 12; a pressure sensor 19 provided on the primary side of the first pressure intensifying circuit sections 16 and the bypass circuit section 17 for detecting the pressure of the branching water; and a control panel 13 for controlling the operation and stop of the first pressure intensifying circuit sections 16 using the pressure of the branching water detected by the pressure sensor 19. <P>COPYRIGHT: (C)2013,JPO&INPIT |
