Throttle valve port performance test device

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...

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

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