Title:
FLOW DISTRIBUTION CONTROL METHOD, DEVICE, AND APPARATUS FOR HYDRAULIC SYSTEM AND HYDRAULIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/199609
Kind Code:
A1
Abstract:
A flow distribution control method for a hydraulic system, the hydraulic system comprising N loops L1-LN. The flow distribution control method comprises the following steps: S1: comparing pressures P1-PN at an inlet of an execution element in each loop of the hydraulic system; S2: according to the comparison result, determining a loop Lp1 which requires flow compensation; and S3: conducting flow compensation on the loop Lp1 according to the theoretical flow of the loop Lp1 and an actual flow in the loop Lp1 which flows into the execution element, wherein the number of loops in the loop Lp1 is less than or equal to N. Also disclosed are a flow distribution control device and a flow distribution control apparatus for the hydraulic system, the hydraulic system and a non-transitory computer-readable medium. An electric control pressure pump and a flow supplementing valve are employed to replace a constant pressure difference valve, and the flow of all branches may be supplemented, thereby avoiding the phenomenon of unequal flow distribution being generated due to flow distribution characteristics of a pressure compensation system being affected by the overflow area of the constant pressure difference valve. The foregoing employ a flow compensation scheme, has a simple structure, is insensitive to pollution, and has low investment costs.
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Inventors:
WANG WEI (CN)
FU LING (CN)
YUAN YE (CN)
ZHANG JUNHUA (CN)
RAO DECAI (CN)
ZHANG JIN (CN)
FU LING (CN)
YUAN YE (CN)
ZHANG JUNHUA (CN)
RAO DECAI (CN)
ZHANG JIN (CN)
Application Number:
PCT/CN2022/082482
Publication Date:
September 29, 2022
Filing Date:
March 23, 2022
Export Citation:
Assignee:
ZOOMLION HEAVY INDUSTRY SCIENCE AND TECH CO LTD (CN)
International Classes:
F15B13/02; F15B13/08; F15B21/02
Foreign References:
| CN113027847A | 2021-06-25 | |||
| CN215257059U | 2021-12-21 | |||
| CN215257058U | 2021-12-21 | |||
| CN105443471A | 2016-03-30 | |||
| CN102734246A | 2012-10-17 | |||
| CN103573731A | 2014-02-12 | |||
| CN101858368A | 2010-10-13 | |||
| US20210048118A1 | 2021-02-18 |
Other References:
DU JIA, GANG XIAO, JING YANG, LONG QUAN: "Energy efficiency characteristics analysis for crane hydraulic system of pump-valve coordinated composite control", JOURNAL OF CENTRAL SOUTH UNIVERSITY(SCIENCE AND TECHNOLOGY), ZHONGNAN DAXUE, CHANGSHA, CN, vol. 52, no. 2, 28 February 2021 (2021-02-28), CN , pages 389 - 399, XP055970354, ISSN: 1672-7207, DOI: 10.11817/j.issn.1672-7207.2021.02.007
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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