Patents by Inventor Dujuan Wang

Dujuan Wang 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).

  • Patent number: 10202807
    Abstract: A vertical shaft drilling rig which includes a derrick and a flatcar element. The rig includes a drill pipe connecting to the derrick, a pipe joint provided on the drill pipe, a device for stabilizing cutterhead pressure connecting to the drill pipe, a torque amplification driver at which the device for stabilizing cutterhead is installed, a cutter head connected to the torque amplification driver, a separate plant on the ground surface, a muck removal system transporting the muck produced to the separate plant, an electric cabinet, a hydraulic station, a power line, and a deep shaft line extension device between the hydraulic station and the power line. The torque amplification driver includes a pressure balance valve, a planetary reducer, a drive flange and a main bearing. The deep shaft line extension device includes a float, a pulley assembly, a line reel, a steel wire and a winch.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: February 12, 2019
    Inventors: Jianbin Li, Kleuters Nikolaus, Hua Zhao, Ningchuan Zhang, Wei Xiao, Xingjian Zhuo, Dujuan Wang, Lianhui Jia, Yanping Dong, Qian Zhou
  • Patent number: 9995086
    Abstract: A center-pillared full-face shaft drilling machine comprises a center pillar (1), device platforms (2), a derrick (3), a driving system (4), a personnel and material conveying system (5), a well wall support and protection system (6), a safeguard system (7), and an operation chamber (8). The derrick (3) is mounted at a wellhead. The operation chamber (8) is disposed on the derrick (3). The center pillar directly leads from the well bottom to the wellhead and is connected to a slide rack comprised in the derrick on the ground. The driving system (4) is mounted at the front end of the center pillar (1) of a device. The multiple device platforms (2) are sequentially mounted on the center pillar (1) of the device from rear to front. The personnel and material conveying system (5) and the safeguard system (7) are separately mounted on the device platforms at the rear of the driving system (4) and on the ground.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: June 12, 2018
    Inventors: Hua Zhao, Jianbin Li, Kleuters Nikolaus, Ningchuan Zhang, Wei Xiao, Xingjian Zhuo, Dujuan Wang, Lianhui Jia, Yanping Dong, Qian Zhou
  • Publication number: 20160369629
    Abstract: A center-pillared full-face shaft drilling machine comprises a center pillar (1), device platforms (2), a derrick (3), a driving system (4), a personnel and material conveying system (5), a well wall support and protection system (6), a safeguard system (7), and an operation chamber (8). The derrick (3) is mounted at a wellhead. The operation chamber (8) is disposed on the derrick (3). The center pillar directly leads from the well bottom to the wellhead and is connected to a slide rack comprised in the derrick on the ground. The driving system (4) is mounted at the front end of the center pillar (1) of a device. The multiple device platforms (2) are sequentially mounted on the center pillar (1) of the device from rear to front. The personnel and material conveying system (5) and the safeguard system (7) are separately mounted on the device platforms at the rear of the driving system (4) and on the ground.
    Type: Application
    Filed: December 9, 2014
    Publication date: December 22, 2016
    Inventors: Hua ZHAO, Jianbin LI, Kleuters Nikolaus, Ningchuan Zhang, Wei Xiao, Xingjian Zhuo, Dujuan Wang, Lianhui Jia, Yanping Dong, Qian Zhou
  • Publication number: 20160369566
    Abstract: A vertical shaft drilling rig using a novel drilling method, mainly comprising a derrick (1) and a mouth sealing flatcar (4) installed at the wellhead, and further comprising a drilling pipe (5), a pipe joint (6), a steady pressure device (7), a torque amplification driver (8), a cutter head (9), a muck removal system (10), a slurry treatment station (3), an electrical cabinet (14), a hydraulic station (13), and a power pipeline (11); a main drive (2) is mounted on the derrick; the lower part of the main drive is connected to the drilling pipe; the drilling pipe is provided with the pipe joint, the lower end of the drilling pipe is connected to the torque amplification driver; the lower end of the torque amplification driver is connected to the cutter head; the steady pressure device is mounted outside the torque amplification device; the slag dug up by the cutter head in the shaft is delivered to the slurry treatment station on the surface.
    Type: Application
    Filed: December 9, 2014
    Publication date: December 22, 2016
    Inventors: Jianbin LI, Kleuters Nikolaus, Hua Zhao, Ningchuan Zhang, Wei Xiao, Xingjian Zhuo, Dujuan Wang, Lianhui Jia, Yanping Dong, Qian Zhou