Title:
CRUDE OIL DRILLING PUMP
Document Type and Number:
WIPO Patent Application WO/2022/168322
Kind Code:
A1
Abstract:
This crude oil drilling pump comprises a production pipe which forms a tube shape along an axis extending in the vertical direction, a pump rotor which extends in the axis direction inside the production pipe; and a pump stator which is between the production pipe and the pump rotor and which surrounds the pump rotor, wherein: the pump rotor has a plurality of pump shafts which are connected in the axis direction, an impeller which draws crude oil upward by rotating along with the pump shafts, and a thrust collar which protrudes radially outward past the pump shafts; and the pump stator has a stator main body which is tubular, and a thrust pad which protrudes radially inward past the inner circumferential surface of the stator main body and which supports the thrust collar from below in a manner so as to be slidable in the circumferential direction.
Inventors:
SASAKI SHUHEI (JP)
MITSUDA KIMIHIKO (JP)
MITSUDA KIMIHIKO (JP)
Application Number:
PCT/JP2021/004649
Publication Date:
August 11, 2022
Filing Date:
February 08, 2021
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F04D13/08; F04D13/00; F04D13/10
Foreign References:
| JP2020139415A | 2020-09-03 | |||
| US20180298910A1 | 2018-10-18 | |||
| JPS59221494A | 1984-12-13 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF:
Previous Patent: BACKDOOR OUTER PANEL AND MANUFACTURING METHOD THEREFOR
Next Patent: VEHICLE ON-BOARD CAMERA AND MANUFACTURING METHOD THEREFOR
Next Patent: VEHICLE ON-BOARD CAMERA AND MANUFACTURING METHOD THEREFOR