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Throttle valve port performance test device

A test device and throttle valve technology, applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve the problem of inability to test the dynamic characteristics of the valve core, oil flow, cavitation and other phenomena that cannot be observed, The structure of the test device is complex and other problems, and the structural optimization design is efficient and reliable, the signal is rich, and the effect of scalability

Inactive Publication Date: 2013-10-02
NANJING UNIV OF TECH +1
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AI Technical Summary

Problems solved by technology

Zhejiang University invented a device for measuring the pressure distribution of the internal flow field of a valve sleeve movable hydraulic valve, which can measure the pressure distribution of the flow field in the hydraulic valve. It is mainly used to carry out research on noise control of hydraulic valves, but the structure of the test device It is relatively complicated and can only measure a single item of pressure parameters. The movement of the valve core is controlled by a combination of gauge blocks, which cannot test the dynamic characteristics of the valve core during opening. Unobservable

Method used

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  • Throttle valve port performance test device
  • Throttle valve port performance test device
  • Throttle valve port performance test device

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Embodiment

[0037] Figure 1~4 Middle: main motor pump unit 1, main oil circuit suction filter 2, main oil circuit pressure filter 3, main oil circuit check valve 4, hose 5, filter 6, oil inlet proportional relief valve 7, flow sensor 8. Oil return proportional relief valve 9, pilot motor pump unit 10, pilot oil circuit suction filter 11, pilot oil circuit pressure filter 12, pilot oil circuit check valve 13, proportional pressure reducing valve 14, overflow valve 15 , pilot oil circuit electromagnetic reversing valve 16, pilot oil circuit electromagnetic reversing valve port one 16a, pilot oil circuit electromagnetic reversing valve port two 16b, pilot oil circuit electromagnetic reversing valve port three 16c, pilot oil circuit electromagnetic reversing valve port three 16c, pilot oil circuit electromagnetic reversing valve Port 4 16d, main oil circuit electromagnetic directional valve 17, main oil circuit electromagnetic directional valve port 1 17a, main oil circuit electromagnetic di...

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Abstract

The invention discloses a throttle valve port performance test device which comprises a visualized flow field, a hydraulic test loop and a data acquisition control system, wherein the hydraulic test loop comprises a main oil circuit, a pilot control oil circuit and a cooling oil circuit; the visualized flow field comprises a valve cavity made of transparent material, a valve core provided with a throttle valve port of which the performance is to be tested, a laser, a CCD camera and a synchronous control device; movement of the valve core is controlled through reset springs at two ends and controlled oil together; the data acquisition control system comprises pressure sensors placed near the throttle valve port in the visualized flow field and in control oil cavities at two ends of the valve core, a flow sensor, a displacement sensor, a sound-level meter and a temperature meter in an oil tank. The device can directly observe cavitation form and flow phenomenon in the visualized flow field, and completes measurement of various parameters such as valve port noise, steady flow force of the valve core, pressure distribution of the flow field, flow and displacement of the valve core at the same time.

Description

technical field [0001] The invention relates to a test device for a hydraulic control element, in particular to a performance test device for a throttle valve port of a high-performance hydraulic valve core. Background technique [0002] In the hydraulic system, the flow into the actuator is usually adjusted by the hydraulic control element to meet the requirements of different working characteristics (such as operating speed, response time, etc.) of the actuator. Any hydraulic control element has a throttle valve port. By changing the structure and configuration of the throttle valve port, different flow control rules can be obtained, so that the system has different working characteristics. The throttle valve determines the performance of the control element and greatly affects the performance of the hydraulic system. Therefore, it is of great significance to develop the research on the performance of the throttle valve port for the development of high-performance hydraul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 殷晨波叶仪俞宏福曹东辉
Owner NANJING UNIV OF TECH
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