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Dynamic property testing device for large-drift-diameter ultrahigh-pressure electro-hydraulic proportional cartridge valve

An electro-hydraulic proportional and testing device technology, which is applied in the directions of fluid pressure actuation device, fluid pressure actuation system test, servo motor assembly, etc. , The effect of strong anti-interference ability and low cost

Active Publication Date: 2017-09-15
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the test has problems such as easy leakage, high cost, large space occupied by the experiment, and high risk factor.

Method used

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  • Dynamic property testing device for large-drift-diameter ultrahigh-pressure electro-hydraulic proportional cartridge valve
  • Dynamic property testing device for large-drift-diameter ultrahigh-pressure electro-hydraulic proportional cartridge valve

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] exist figure 1 The high-frequency hydraulic cylinder shown is set in the schematic diagram of the output force control system of the hydraulic cylinder. The test control pump 1 of the output force control system of the hydraulic cylinder is connected to the oil tank 17 at its inlet end and connected to two pipelines at its outlet end. An overflow valve 4 is provided on the branch pipeline, and the overflow valve is connected with the oil tank, and a one-way valve 2 and an oil filter 5 connected in series are arranged on the other branch pipeline, and the outlet of the filter is connected with two pipelines, one of which is One port of the servo valve 6 is connected to the oil tank through the shut-off valve 15.2, the other port of the servo valve is connected to the oil inlet of the high-frequency hydraulic cylinder 7, and there are two pipelines connected to the oil return port of the high-frequency hydraulic cylinder. One is connected to the oil tank through the cut-o...

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Abstract

The invention discloses a dynamic property testing device for a large-drift-diameter ultrahigh-pressure electro-hydraulic proportional cartridge valve. The device mainly comprises a high-frequency hydraulic cylinder, a hydraulic cylinder output force control system and a specialized cartridge valve testing valve block, wherein the hydraulic cylinder output force control system and the specialized cartridge valve testing valve block are matched with the high-frequency hydraulic cylinder. According to the device, hydraulic power borne by a cartridge valve element in a switched-on state is mainly simulated by the hydraulic cylinder output force on the condition that fluid flowing is not adopted, the movement and controlled condition of the valve element are measured when the hydraulic cylinder acts, and then dynamic property parameter characteristic testing of the ultrahigh-pressure high-flow cartridge valve is achieved; dynamic property testing of the cartridge valve can be achieved in a laboratory on the condition that a high-flow pump unit is not needed, therefore, the testing cost is greatly reduced, the testing period is shortened, problems can be found and excluded in time when product approval testing is conducted, and the product research and development speed is increased.

Description

technical field [0001] The invention relates to a valve test device, in particular to a cartridge valve dynamic performance test device. Background technique [0002] With the development of industry, mechanical equipment has higher and higher requirements for the flow and pressure performance of hydraulic systems. Ultra-high pressure and large flow electro-hydraulic proportional cartridge valves have simple structure, high degree of standardization, large oil flow capacity, small liquid resistance, and tightness. It is widely used in high-pressure and large-flow systems such as hydraulic presses, plastic forming machines, and die-casting machines. [0003] Strict static and dynamic performance tests are required to ensure the performance of ultra-high pressure and large flow electro-hydraulic proportional cartridge valves before they are finalized and shipped. At present, for the test of ultra-high pressure and large flow electro-hydraulic proportional cartridge valve, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B19/00
CPCF15B13/026F15B19/00
Inventor 赵劲松姚静薛雄伟赵子宁
Owner YANSHAN UNIV
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