Patents by Inventor Qiuhong XU

Qiuhong XU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Water hammer-proof air valve and water hammer-proof exhaust method for in-use pipeline
    Patent number: 10690262
    Abstract: A water hammer-proof air valve that has a valve body and a bonnet, that are fixedly connected, a valve opening is provided on the valve body, and a high-speed intake and exhaust device is provided in an inner cavity of the valve body. A bonnet opening is provided on the bonnet, an output end of the high-speed intake and exhaust device penetrates the bonnet opening and is communicated with a high-speed exhaust throttling device for limiting an exhaust amount of gas of the high-speed intake and exhaust device, an output end of the high-speed exhaust throttling device is communicated with an outside air, and a trace exhaust device for discharging the gas separated out from the pipeline to the outside through the high-speed exhaust throttling device after the high-speed intake and exhaust device closes the valve is further provided in the high-speed intake and exhaust device.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: June 23, 2020
    Assignee: ZHUZHOU SOUTHERN VALVE CO. LTD.
    Inventors: Jing Huang, Xinchun Gui, Jinpeng Tang, Jianguo Yin, Qiuhong Xu, Aihua Xie, Aihua Tang
  • WATER HAMMER-PROOF AIR VALVE AND WATER HAMMER-PROOF EXHAUST METHOD FOR IN-USE PIPELINE
    Publication number: 20180149287
    Abstract: A water hammer-proof air valve that has a valve body and a bonnet, that are fixedly connected, a valve opening is provided on the valve body, and a high-speed intake and exhaust device is provided in an inner cavity of the valve body. A bonnet opening is provided on the bonnet, an output end of the high-speed intake and exhaust device penetrates the bonnet opening and is communicated with a high-speed exhaust throttling device for limiting an exhaust amount of gas of the high-speed intake and exhaust device, an output end of the high-speed exhaust throttling device is communicated with an outside air, and a trace exhaust device for discharging the gas separated out from the pipeline to the outside through the high-speed exhaust throttling device after the high-speed intake and exhaust device closes the valve is further provided in the high-speed intake and exhaust device.
    Type: Application
    Filed: May 30, 2016
    Publication date: May 31, 2018
    Inventors: Jing HUANG, Xinchun GUI, Jinpeng TANG, Jianguo YIN, Qiuhong XU, Aihua XIE, Aihua TANG