Patents by Inventor Houwei Xing

Houwei Xing 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).

  • Centrifugal Pump Connection Device for Electrical Submersible Pump Unit
    Publication number: 20140227028
    Abstract: The invention relates to a centrifugal pump connection device for electrical submersible pump unit; two or more centrifugal pumps are fixedly connected successively from top to bottom, the lower end of a centrifugal pump body being a connecting flange and a rabbet at the lower end of the connecting flange inserting in the upper inner bore of an adjacent centrifugal pump body, the contact surface between the connecting flange and the centrifugal pump body is a spherical surface, and the used washer of a bolt is a disc washer; the spherical surface of the connecting flange is a convex spherical surface, and the spherical surface of the upper end of the centrifugal pump body is a concave spherical surface.
    Type: Application
    Filed: June 15, 2012
    Publication date: August 14, 2014
    Applicants: China National Petroleum Corporation, Zhongcheng Machinery Manufacturing Co., Ltd. of Bohai Petroleum Equipment, CNPC, Bohai Equipment Manufacturing Co., Ltd
    Inventors: Pin Wu, Hai Zhou, Yuliang Shen, Houwei Xing, Heng Zhang, Shaohua Liu