A Circumferential Valve Port Characteristic Test Bench

Abstract

The invention discloses a circumferential valve port characteristic test bench. The test bench comprises a left end cover and a right end cover, the outer surface of the left end cover and the outer surface of the right end cover are each provided with a sealing end cover, a valve body with a through cavity is arranged between the left end cover and the right end cover, sensor installation ports are formed in the valve body, a valve bush is installed in the through cavity of the valve body, a through cavity is formed in the valve bush, the two ends of the valve bush through cavity are each provided with a sleeve, a valve element assembly is installed between the sleeves, and a high-precision micrometer rotating platform is connected with the valve element assembly through a small end cover; the test bench further comprises a torque and rotating speed sensor installed on a support. The circumferential valve port characteristic test bench can be used on the condition of taking water as a working medium, comprehensive measuring on the valve port characteristics such as the pressure flow characteristic, the hydraulic torque characteristic and water film parameters can be achieved through a pressure flow sensor, the torque and rotating speed sensor and a water film thickness sensor, so that the test bench achieves diverse functions; in the test process, a series of tests can be achieved only by replacing the key test parts such as the valve element assembly and the valve bush, the universality of the test parts is good, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the field of valve port characteristic test equipment, in particular to a circumferential valve port characteristic test bench in the field. Background technique [0002] Most of the existing test devices for valve port characteristics are designed for axial valve ports such as slide valves, cone valves, and ball valves. The research on the characteristics of rotary circumferential valve ports is mostly limited to the case where hydraulic oil is used as the working medium. Most of the existing hydraulic valve orifice characteristic test benches can only test a single valve orifice characteristic, with a single function, and cannot obtain comprehensive hydraulic characteristics of the valve orifice. [0003] In addition, at present, the valve port characteristics test of hydraulic control valves in the existing technology is generally a complete prototype test. One test bench can only carry out the valve port characteristic test...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing test devices for valve port characteristics are designed for axial valve ports such as slide valves, cone valves, and ball valves. The research on the characteristics of rotary circumferential valve ports is mostly limited to the case where hydraulic oil is used as the working medium. Most of the existing hydraulic valve port characteristics test benches can only test a single valve port characteristic, and the function is single, so it is impossible to obtain a more comprehensive valve port hydraulic characteristics

[0003] In addition, at present, the valve port characteristics test of hydraulic control valves in the existing technology is generally a complete prototype test. One test bench can only carry out the valve port characteristic test of one size or one structural form. If other valve port tests are to be carried out, it must be The corresponding valve body and other parts are reprocessed, and the versatility of the test piece is poor. Even if a small range of test pieces can be used universally, the replacement process is quite cumbersome, resulting in a longer test period.

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