A Design Method of Hydraulic System Based on Multi-source Network

A technology of hydraulic system and design method, which is applied in the direction of mechanical equipment, fluid pressure actuators, servo motors, etc., and can solve problems such as high maintenance costs, increased internal leakage of hydraulic pumps, and poor speed characteristics of hydraulic cylinders or hydraulic motors. Achieve the effect of high energy utilization rate, high reliability and high reliability

Active Publication Date: 2017-04-26
扬州鼎隆机械有限公司
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Problems solved by technology

[0004] At present, the common design method used to improve the efficiency of the hydraulic system is to use the variable pump as the main control element, that is, the pump control system, but the effect is not ideal, because when the load becomes larger, the internal leakage of the hydraulic pump increases, causing the hydraulic cylinder Or the speed characteristic of the hydraulic motor deteriorates
In addition, the high price of fast-response variable pumps and high maintenance costs are also an important reason for limiting the application of such systems

Method used

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  • A Design Method of Hydraulic System Based on Multi-source Network
  • A Design Method of Hydraulic System Based on Multi-source Network
  • A Design Method of Hydraulic System Based on Multi-source Network

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Embodiment Construction

[0023] Such as figure 2 and image 3 As shown, the present invention consists of 14 components, which can be divided into four modules: multi-source flow level, pressure classification module, function control valve module and multiple actuators. The multi-source flow stage includes fuel tank 1, motors 2.1, 2.2, 2.3, hydraulic pumps (first quantitative pump 4.1, second quantitative pump 4.2 and variable displacement pump 3), accumulators (low-pressure accumulator 10, medium-pressure accumulator device 9 and high-pressure accumulator 8), the first bypass unloading valve 7.1, the second bypass unloading valve 7.2, the first one-way valve 6.1, the second one-way valve 6.2, the third one-way valve 6.3; based on The idea of ​​the network, all the hydraulic pumps inside the multi-source flow stage (including the first quantitative pump 4.1, the second quantitative pump 4.2 and the variable pump 3) must be connected to a check valve at the outlet, respectively the first check valve...

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Abstract

The invention relates to a hydraulic system design method based on a multisource network; and a hydraulic system designed by the design method uses flexible matching of multiple pumps and energy accumulating units for forming multiple hydraulic sources with different flows, pressure output characteristics, mutual independence and a certain energy accumulating capacity. The matching of pump sources and actuators is realized by using a topology mapping relation of network flows; and an optimal path is selected to reduce the energy loss. The design method has the following advantages: through the network connections between the pump sources and a pressure classification valve set, between the pressure classification valve set and a control valve set and between the control valve set and actuating elements, the matching between the pressure and the flow in loops is realized, the system efficiency and the energy utilization rate are improved, and the system reliability is improved. Meanwhile, the design method further can use redundant loops and energy accumulators for realizing the energy recycling according to the working conditions.

Description

technical field [0001] The invention belongs to the application field of hydraulic technology, and relates to a hydraulic system design method based on a multi-source network. Background technique [0002] As one of the key technologies of modern transmission and control, hydraulic technology is widely used in walking machinery, mining machinery, ship machinery, aerospace machinery, etc. The application and development of hydraulic technology is regarded as an important symbol to measure a country's industrialization level and modern industrial development level. The hydraulic system has the advantages of high power-to-weight ratio, fast response, high rigidity, and strong bearing capacity. However, traditional hydraulic systems have disadvantages such as low efficiency, poor reliability, and greater influence by temperature. [0003] The hydraulic system of heavy machinery usually has multiple hydraulic pumps (that is, multi-pump sources) and multiple actuators (that is, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/17
CPCF15B11/17
Inventor 姚静刘胜凯李彬孔祥东
Owner 扬州鼎隆机械有限公司
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