发明名称 |
GAS-BLAST CIRCUIT-BREAKER |
摘要 |
PROBLEM TO BE SOLVED: To conduct switching between flow passages in a high-flow rate zone and a low-flow rate zone to monitor leakage abnormality for a gas appliance and a gas supplying facility. SOLUTION: This circuit-breaker is provided with a time setting means 21 for setting a driving period of a flow rate switching means 16 in a low-flow rate; a counting means 22 for counting a drive-start time of the flow rate switching means 16; a time determining means 23 for determining whether a lapse time in the counting means 22 reaches to a time-set value or not; a flow rate determining means 24 for driving the flow rate switching means 16 to close the second flow passage 1 when an output signal of the time determining means 23, and conversion flow rates in the first and second flow rate conversion means 19, 20 are detected to be a prescribed flow rate or less; and an abnormality determining means 25 for measuring a flow rate by the second flow rate detecting means 18 to determine whether a flow rate value therein is a prescribed leakage value or more or not, after the flow rate switching means 16 is driven by the flow rate determining means 24.
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申请公布号 |
JP2003028744(A) |
申请公布日期 |
2003.01.29 |
申请号 |
JP20010213385 |
申请日期 |
2001.07.13 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
UEKI KOICHI;NIIMURA NORIO |
分类号 |
G01F1/00;G01F1/66;G01F3/22;G01M3/00;(IPC1-7):G01M3/00 |
主分类号 |
G01F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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