The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 2017
Filed:
Feb. 19, 2014
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Michiyasu Ishida, Tokyo, JP;
Hirotoshi Kitagawa, Kanagawa, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An object of the present invention is to provide a gas leakage checking device and a method for the same, for checking fuel-gas leakage of safety shutoff valves simply and securely by measuring a pressure in a fuel supply pipe. The gas-leakage checking deviceincludes a first safety shutoff valvedisposed in a fuel-gas supply pipeof the gas internal combustion enginefor permitting or shutting off a flow of the fuel gas, a second safety shutoff valvedisposed on a downstream side of the first safety shutoff valve, a gas-leakage checking pipebranched from between the first and second safety shutoff valves, a gas-discharge valvedisposed in the gas-leakage checking pipeand configured to discharge the fuel gas between the first and second safety shutoff valves, a first pressure meter Pfor detecting a pressure of the fuel gas in the gas-leakage checking pipe, and second pressure meters P, Pdisposed on a downstream side of the second safety shutoff valve, for detecting the pressure of the fuel gas in the fuel-gas supply pipe