Title:
ガス遮断装置
Document Type and Number:
Japanese Patent JP4568990
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To execute earthquake-sensitive breaking processing corresponding to the determination of multistage seismic intensities. SOLUTION: An earthquake determining part 2 outputs a break permission signal B and an earthquake break establishing signal G when an earthquake pulse A of a low gal detecting part 1 indicates the earthquake, and a seismic coefficient determining part 9 outputs a valve opening prohibition signal I in the presence of a strong earthquake signal H of a high gal detecting part 8 and the earthquake break establishing signal G. A leakage determining part 7 receives a restoration starting signal F, and outputs a break permission signal B when the gas leakage exists, and a valve opening release inputting part 10 releases the valve opening prohibition signal I on the basis of a valve opening prohibition releasing signal J. A valve closing driving part 3 outputs a valve closing signal C in the presence of the break permission signal B, and a valve opening driving part 6 outputs a valve opening signal E and the restoration starting signal F in the absence of the valve opening prohibition signal I and in the presence of a valve opening permission signal D of a valve opening inputting part 5. A valve 4 closes a gas passage on the basis of the valve closing signal C, and opens the same on the basis of the valve opening signal E.
Inventors:
Takuhisa Otani
Tadanori Shirasawa
Yasuo Kiba
Tadanori Shirasawa
Yasuo Kiba
Application Number:
JP2000350966A
Publication Date:
October 27, 2010
Filing Date:
November 17, 2000
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
F16K17/36; F16K37/00; G01V1/00; F17D3/01; F17D5/02; F23K5/00; G08B21/00; G08B21/16
Domestic Patent References:
| JP9053970A | ||||
| JP2088982U | ||||
| JP8247817A | ||||
| JP9273953A | ||||
| JP2002156259A |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii