Title:
ガス保安装置
Document Type and Number:
Japanese Patent JP7012218
Kind Code:
B2
Abstract:
A gas safety device includes: flow path (2) through which a gas flows; ultrasonic sensor (1) for measuring a flow rate of the gas flowing through flow path (2); flow rate calculator (15) that calculates a flow rate measurement data pieces from a measurement value of the flow rate measured by ultrasonic sensor (1); and leakage detector (14) that detects a minor leakage of the gas. The gas safety device further includes: pulsation recognizer (5) that recognizes that pulsation is occurring when a fluctuation in the flow rate measuring data pieces calculated by flow rate calculator (15) is greater than or equal to a predetermined value; and pulsating flow rate corrector (6) that corrects, when pulsation recognizer (5) determines that the pulsation is occurring, the flow rate measurement data piece by a predetermined value. Furthermore, when pulsation recognizer (5) determines that the pulsation is occurring, leakage detector (14) determines whether a leakage is present using the flow rate measurement data piece corrected by pulsating flow rate corrector (6).
Inventors:
Hiroshi Fujii
Takashi Kayaba
Yoshihiro Ueda
Kenji Yasuda
Taichi Gyotoku
Hideki Kinoshita
Takashi Kayaba
Yoshihiro Ueda
Kenji Yasuda
Taichi Gyotoku
Hideki Kinoshita
Application Number:
JP2018067342A
Publication Date:
January 28, 2022
Filing Date:
March 30, 2018
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
G01F3/22
Domestic Patent References:
| JP2003028680A | ||||
| JP2001174297A | ||||
| JP2010160040A | ||||
| JP2003222548A | ||||
| JP2012194142A | ||||
| JP2001241984A | ||||
| JP2011007513A | ||||
| JP2011208977A | ||||
| JP2005233437A |
Foreign References:
| US6199573 |
Attorney, Agent or Firm:
Kenji Kamata
Koichi Nomura
Koichi Nomura