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:
Dec. 22, 2020
Filed:
Dec. 22, 2017
Hitachi-ge Nuclear Energy, Ltd., Hitachi, JP;
Okano Valve Mfg. Co. Ltd., Kitakyushu, JP;
Daisuke Hirasawa, Hitachi, JP;
Yoshihisa Kiyotoki, Hitachi, JP;
Hisashi Satou, Hitachi, JP;
Keisuke Sakemura, Kitakyushu, JP;
Keiji Sasaki, Kitakyushu, JP;
Yuta Fukuda, Kitakyushu, JP;
Hitachi-GE Nuclear Energy, Ltd., Hitachi, JP;
Okano Valve Mfg. Co. Ltd., Kitakyushu, JP;
Abstract
A high reliable water injection device is provided that injects water into a reactor containment vessel and can reliably shut off cooling water at normal times and quickly and reliably inject water into the reactor containment vessel without the need for external power, in a case of emergency. The water injection device injects water into a reactor containment vessel includes a flow path through which cooling water is supplied; a disk that closes the flow path; a swing arm that is connected to the disk and performs closing and opening of the flow path by the disk; and a weight that is connected to the swing arm via a swing lever, in which the weight is supported by a support member made of a low melting point alloy.