| 摘要 |
PURPOSE: Provided is a system for sensing gas leak from gas pipes between gas facilities and remote controlling generation of alarm and the leak, which can prevent explosion of gas caused by the gas leakage and reduce an amount of loss of the gas. CONSTITUTION: The system comprises a pressure sensor(25), a speed sensor(26) and a temperature sensor(27) respectively installed at a gas supply side(21) and a gas consumption side(22) of gas pipes for detecting flow amount of the gas, a gas supply and a gas consumption amount analyzing spot controllers(19,29) controlling gas block when gas leak is detected, a gas leak comparing and analyzing device(31) judging if there is gas leak by receiving detected data on amount of the gas from the controllers and comparing mutually, a remote controller(32) controlling an alarm based on the detected signal and transmitting a gas block signal to the spot controllers(19,29) through a communication circuit, and a gas block vibration valve(28) for stopping the gas based on the gas block signal from the remote controller. The gas leak comparing and analyzing device includes a zero point adjusting circuit for adjusting zero point of the gas amount comparing device, a delay circuit compensating interval differences and a leak judging device judging if there is gas leak by comparing with a standard value for correction the minimum error.
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