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:
Apr. 27, 2021
Filed:
Oct. 20, 2017
China Shenhua Energy Company Limited, Beijing, CN;
Shenhua (Fujian) Energy Company Limited, Fujian, CN;
Shenhua (Fuzhou) Luoyuan Bay Port&power Co., Ltd, Fujian, CN;
Shumin Wang, Beijing, CN;
Yanchao Li, Fujian, CN;
Zhijiang Liu, Beijing, CN;
Xing Wei, Fujian, CN;
Wei Wang, Fujian, CN;
Lihua Cao, Jilin, CN;
Zhijia Lv, Fujian, CN;
CHINA SHENHUA ENERGY COMPANY LIMITED, Beijing, CN;
Abstract
Provided is a steam turbine overspeed protection system, includes a drive gear arranged to match a rotation speed of a rotor of a steam turbine; a rotating shaft parallel to an axis of the drive gear and capable of rotating at a critical rotation speed; a protective gear arranged on the rotating shaft and forming a lead screw nut mechanism with the rotating shaft, and arranged to be capable of engaging with the drive gear when the rotation speed of the drive gear exceeds the critical rotation speed; and an operating rod connected to the protective gear; wherein, when the drive gear engages with the protective gear, the protective gear can move in the axial direction of the rotating shaft and thereby drive the operating rod to move and produce an action that activates a protection device for preventing steam turbine overspeed.