| 摘要 |
PROBLEM TO BE SOLVED: To provide a supply device constituted so as to inject an odorant by connecting a supply pipe equipped with an on-off valve to a gas conduit through which a natural gas flows, capable of corresponding to the stable amount of the odorant injected over a wide range, capable of adjusting the degree of opening of the on-off valve and capable of accurately controlling the amount of the odorant injected. SOLUTION: The supply device 100 is constituted so as to supply a second fluid 3 to the first fluid 1 flowing through a pressure feed pipe 2 through the supply pipe 6 connected to the pressure feed pipe 2 and equipped with a pressure adjusting part 8 for adjusting the pressure of the second fluid 3 flowing through the supply pipe 6, a difference pressure detecting part 7 for detecting the difference between the pressures of the first and second fluids 1 and 3 and an on-off valve 11 for adjusting the flow rate of the second fluid 3 by the degree of opening of the valve. The degree of opening of the on-off valve 11 is adjusted while adjusting the pressure difference in front of and behind the on-off valve by the pressure adjusting part 8 corresponding to the flow rate of the second fluid 3 to be supplied to control the on-off valve. COPYRIGHT: (C)2005,JPO&NCIPI
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