Title:
GAS LEAKAGE DETECTOR OF GAS CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2015139323
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a gas leakage detector capable of swiftly detecting an abnormality of gas leakage.SOLUTION: The gas leakage detector includes an operation unit that performs an operation to convert a gas pressure into a pressure value at a reference temperature based on a gas pressure and a gas temperature detected by a gas pressure/gas temperature detection section and outputs the calculation result as a converted gas density. The operation unit calculates a converted gas density at a gas temperature assumed as identical. The operation unit also calculates an inclination value of an approximation straight line waveform which is calculated by using the converted gas density at the gas temperature assumed as identical. The operation unit determines existence/absence of gas leakage abnormality based on a maximum value envelope waveform connecting maximum values of the inclination values or a minimum value envelope waveform connecting minimum values of the inclination values.
Inventors:
IZEKI TOSHIYUKI
TAKEUCHI HIROSHI
TAKEUCHI HIROSHI
Application Number:
JP2014010620A
Publication Date:
July 30, 2015
Filing Date:
January 23, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02B13/025; H01H33/56; H02B3/00; H02B13/065; H02G5/06; H02G5/08
Attorney, Agent or Firm:
Hiroaki Sakai