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. 19, 2023
Filed:
Apr. 13, 2021
China Three Gorges Corporation, Beijing, CN;
China Institute of Water Resources and Hydropower Research, Beijing, CN;
Huichao Dai, Beijing, CN;
Hao Wang, Beijing, CN;
Jiazhen Li, Beijing, CN;
Xinlei Guo, Beijing, CN;
Yongxin Guo, Beijing, CN;
Tao Wang, Beijing, CN;
Hanqing Zhao, Beijing, CN;
Hui Fu, Beijing, CN;
Jiajia Pan, Beijing, CN;
CHINA THREE GORGES CORPORATION, Beijing, CN;
CHINA INSTITUTE OF WATER RESOURCES AND HYDROPOWER RESEARCH, Beijing, CN;
Abstract
The present invention relates to a variable-flow-path air valve for water hammer prevention and a design method. The variable-flow-path air valve includes a valve body with a top provided with an air intake-exhaust port. A ball valve seat and a floating ball are arranged below the air intake-exhaust port. The valve body is provided with at least one swing check valve configured to be opened inward. The swing check valve includes: a swing valve disc connected to a valve body hinge, a variable-flow-path air inlet controlled by the swing valve disc to open and close, a device for limiting the opening degree of the swing valve disc, and a sealing device. In the present invention, the air valve takes in air through the air intake-exhaust port and the variable flow path, and discharges air only through the air intake-exhaust port.