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. 17, 2019
Filed:
Dec. 09, 2016
China Nuclear Power Engineering Co., Ltd., Shenzhen, Guangdong, CN;
Shenyang Blower Group Nuclear Power Pumps Co., Ltd., Shenyang, Liaoning, CN;
China General Nuclear Power Group, Shenzhen, Guangdong, CN;
Xingjiang Chen, Guangdong, CN;
Zhiyuan Luo, Guangdong, CN;
Yuangang Duan, Guangdong, CN;
Zhongshuang Li, Guangdong, CN;
Wei Fu, Guangdong, CN;
Guohui Cong, Guangdong, CN;
Zhao Chen, Guangdong, CN;
Xiaowu Song, Guangdong, CN;
Yanzhang Liu, Liaoning, CN;
Xueling Wang, Liaoning, CN;
Jiajiong Ma, Liaoning, CN;
Yixun Zhang, Liaoning, CN;
China Nuclear Power Engineering Co., Ltd., Shenzhen, CN;
Shenyang Blower Group Nuclear Power Pumps Co., Ltd., Shenyang, CN;
China General Nuclear Power Group, Shenzhen, CN;
Abstract
A main pump shaft seal water injection system of a nuclear power plant includes a jet pump, a high pressure cooler, a hydrocyclone, valves and a main connection pipeline outside of a main pump, and an auxiliary pump and an internal flow path inside the main pump. Inner and outer flow paths of the main pump are connected with a shaft seal water injection hole and a high temperature water drainage hole. The main connection pipeline is connected between an upper filling water pipeline and a shaft seal water injection hole. A bypass pipeline connected with the jet pump, the high pressure cooler and the hydrocyclone, the main connection pipeline is provided with a normally open main pipeline isolating valve. The bypass pipeline allows low temperature upper filling water in the RCV system to enter the shaft seal water injection hole of the main flange directly.