Title:
LARGE FLOW VALVE-PUMP JOINT CONTROL EMULSION PUMP STATION AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/004397
Kind Code:
A1
Abstract:
A large flow valve-pump joint control emulsion pump station and a control method therefor, particularly suitable for use in the field of coal electromechanical equipment hydraulic systems. A valve-controlled liquid supply system is added to an existing pump-controlled emulsion pump station system controlled by an inverter, a filter being connected to a small metering pump (2), the small metering pump (2) being driven by a motor (3), there being three bypasses at the outlet of the small metering pump (2), one entering a hydraulic support system, another being connected to a proportional throttle valve (6) to flow back to an oil tank (9), and another being connected to a relief valve (4) to flow back to the oil tank (9). The pumped flow flows into the hydraulic support system in a timely manner, the flow being small and stable, increasing the response speed of the entire system. When the pump control system is started, as the hydraulic support system already has a flow entering, flow fluctuations and shocks are greatly reduced; the structure is simple and maintenance is convenient.
Inventors:
ZHAO JIYUN (CN)
CAO CHAO (CN)
WANG YUNFEI (CN)
MAN JIAXIANG (CN)
ZHANG HE (CN)
CAO CHAO (CN)
WANG YUNFEI (CN)
MAN JIAXIANG (CN)
ZHANG HE (CN)
Application Number:
PCT/CN2020/100215
Publication Date:
January 14, 2021
Filing Date:
July 03, 2020
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
F15B11/00; F04B49/06; F15B1/02; F15B13/02
Foreign References:
| CN110307193A | 2019-10-08 | |||
| CN102030266A | 2011-04-27 | |||
| CN103286250A | 2013-09-11 | |||
| CN106286438A | 2017-01-04 | |||
| CN206555192U | 2017-10-13 | |||
| CN107882792A | 2018-04-06 | |||
| CN101126402A | 2008-02-20 | |||
| JPH08246509A | 1996-09-24 |
Other References:
LI, AIMIN ET AL.: "Design of Experimental System for Valve-pump Parallel Variable Mode Speed Regulation", MACHINE TOOL & HYDRAULICS, vol. 47, no. 10, 31 May 2019 (2019-05-31), ISSN: 1001-3881
DING, HAIGANG ET AL.: "Analysis of valve-pump combined high power hydraulic speed regulation schemes", JOURNAL OF CHINA COAL SOCIETY, vol. 38, no. 9, 30 September 2013 (2013-09-30), ISSN: 0253-9993, DOI: 20200911145351A
DING, HAIGANG ET AL.: "Analysis of valve-pump combined high power hydraulic speed regulation schemes", JOURNAL OF CHINA COAL SOCIETY, vol. 38, no. 9, 30 September 2013 (2013-09-30), ISSN: 0253-9993, DOI: 20200911145351A
Attorney, Agent or Firm:
NANJING ZHENGLIAN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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