Title:
GAS LEAKAGE MONITORING DEVICE
Document Type and Number:
Japanese Patent JP2604981
Kind Code:
B2
Abstract:
PURPOSE: To provide a gas leakage monitoring device which can surely detect gas leakage in its early stages and can control the flow of a gas based on the flow rate of the gas.
CONSTITUTION: The gas leakage monitoring device 11 is provided with a flowmeter 33 which detects the flow rate of a gas from a gas cylinder 21, a branch pipe 35 which branches the flow of the gas to a pipeline 37 for measurement and another pipeline 36 for by-pass, a by-pass valve 34 which breaks the flow of the gas along the pipeline 36, a by-pass valve controlling program 18 for controlling the opening/closing of the valve 34, and gas meter 22 for storing section which detects the consumed amount of the gas. The device 11 is also provided with a sampling program 15 for sampling and calculating the gas consumption indicated by the meter 22 and that indicated by the gas meter 23a of each house during a prescribed period of time at every prescribed period of time when the valve 4 is closed and a gas leakage judging program 16 for judging the presence of gas leakage when the difference between the sum of gas consumption indicated by the gas meters 23a and the gas consumption indicated by the gas meter 22 becomes larger than a prescribed value.
Inventors:
Jiro Mizukoshi
Takashi Noguchi
Takashi Noguchi
Application Number:
JP19495694A
Publication Date:
April 30, 1997
Filing Date:
July 26, 1994
Export Citation:
Assignee:
Toyo Gas Meter Co., Ltd.
International Classes:
G01M3/28; F17D1/04; F17D5/00; (IPC1-7): G01M3/28; F17D1/04; F17D5/00
Domestic Patent References:
| JP4363638A |
Attorney, Agent or Firm:
Takashi Tomizawa (2 outside)