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Title:
POSITIVE-DISPLACEMENT PUMP AND OIL PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/041681
Kind Code:
A1
Abstract:
Provided are a positive-displacement pump (1) and an oil production device using the positive-displacement pump (1). The positive-displacement pump (1) comprises a housing (101), wherein the housing (101) is provided with a liquid discharging end and a cylindrical pump chamber, at least one liquid inlet (105) is arranged in a side wall of the housing (101), and a liquid discharging channel (106) is formed inside the side wall of the housing (101); a rotor body (102) capable of rotating around an axis thereof is coaxially embedded in the housing (101), at least one through hole, that is used for guiding liquid at the liquid inlet (105) side into the liquid discharging channel (106), is formed in the rotor body (102), a plunger (103) is slidably arranged in each through hole, various plungers (103) are arranged in sequence in an axial direction of the rotor body (102), and all the axes of the various plungers (103) are perpendicular to the axis of the rotor body (102); and a transmission crankshaft (104), that is used for driving the various plungers (103) to reciprocally slide and move in the corresponding through hole, is coaxially arranged in the rotor body (102).

Inventors:
WEI, Xiaomei (Room 201, Building No.B4 Optics Valley Financial Harbour, Donghu New Technology Development Zon, Wuhan Hubei 0, 430070, CN)
ZHENG, Ruibo (Room 201, Building No.B4 Optics Valley Financial Harbour, Donghu New Technology Development Zon, Wuhan Hubei 0, 430070, CN)
LIU, Yunrong (Room 201, Building No.B4 Optics Valley Financial Harbour, Donghu New Technology Development Zon, Wuhan Hubei 0, 430070, CN)
Application Number:
CN2017/118171
Publication Date:
March 07, 2019
Filing Date:
December 25, 2017
Export Citation:
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Assignee:
HISPEED (WUHAN) PETROLEUM TECHNOLOGY CO., LTD. (Room 201, Building No.B4 Optics Valley Financial Harbour, Donghu New Technology Development Zon, Wuhan Hubei 0, 430070, CN)
International Classes:
F04B47/06; E21B43/00; F04B53/14
Domestic Patent References:
WO2001036789A12001-05-25
Foreign References:
CN107461320A2017-12-12
CN2189217Y1995-02-08
CN200996365Y2007-12-26
CN2291510Y1998-09-16
Attorney, Agent or Firm:
BEIJING HUIZE INTELLECTUAL PROPERTY LAW LLC. (ZHANG, JinA18, Horizon International Tower,No.6, Zhichun Road, Haidian District, Beijing 8, 100088, CN)
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