Hydraulic valve performance test experimental system
A testing experiment and hydraulic valve technology, applied in mechanical valve testing, fluid tightness testing, fluid pressure actuation system testing, etc., can solve the problem of large pressure pulsation, failure to meet hydraulic valve pressure and flow characteristic testing requirements, and load regulation Narrow range and other problems, to achieve the effect of accurate measurement of pressure characteristics
Active Publication Date: 2020-08-25
HARBIN INST OF TECH
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Problems solved by technology
[0003] The present invention aims to solve the existing problems of large pressure pulsation and narrow load adjustment range when testing the performance of hydraulic valves, which cannot meet the testing requirements of hydraulic valve pressure and flow characteristics, and proposes a hydraulic valve performance test experiment system
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specific Embodiment approach 1
[0043] Specific implementation mode one: the following combination figure 1 and figure 2Describe this embodiment, a hydraulic valve performance test experimental system described in this embodiment includes a variable hydraulic pump 2, a check valve 4, a first proportional relief valve 5, a first two-position three-way electromagnetic reversing valve 13, The second proportional overflow valve 15, the second two-position three-way electromagnetic reversing valve 16, the first double-acting hydraulic cylinder 17, the second double-acting hydraulic cylinder 18, the two-position four-way electromagnetic reversing valve 19, the third proportional overflow Flow valve 20, quantitative hydraulic pump 22, oil tank 24, valve plate, measurement and control system and data acquisition unit;
[0044] The liquid inlet of variable hydraulic pump 2 communicates with oil tank 24, and the liquid outlet communicates with the liquid inlet of valve plate, and described valve plate is used for in...
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The invention relates to a hydraulic valve performance test experimental system and belongs to the technical field of hydraulic valve performance tests. The hydraulic valve performance test experimental system solves the problem that the pressure and flow characteristic test demands of the hydraulic valve cannot be met as an existing hydraulic valve is large in pressure pulsation and narrow in load adjusting range during pressure flow test when hydraulic valve performance is tested. Influence on measurement of the hydraulic valve performance by pressure pulsation is eliminated by reducing thepressure pulsation of a volume adjustable hydraulic pump. By additionally mounting flow sensors in front of and behind the experimental hydraulic valve, leakage in the hydraulic valve is measured. Large range measurement of a flow is achieved by controlling the discharge of the volume adjustable hydraulic pump. Large range precision loading of the hydraulic valve is achieved by means of a load loading system, and the pressure characteristic of the hydraulic valve is measured precisely by controlling change of a pump output pressure by a proportional overflow valve. The hydraulic valve performance test experimental system is suitable for measuring the hydraulic valve.
Description
technical field [0001] The invention belongs to the technical field of hydraulic valve performance testing. Background technique [0002] The hydraulic system is widely used in various mechanical equipment due to its many advantages such as high power density, compact structure, flexible component layout, and high control precision. The hydraulic valve is an important control element in the hydraulic system, and its performance directly affects the static and dynamic performance of the hydraulic system, so it is very important to test the performance of the hydraulic valve. The traditional hydraulic valve performance test bench has a large pressure pulsation and a narrow load adjustment range during the pressure flow test, which cannot meet the pressure and flow characteristic test requirements of the hydraulic valve. Contents of the invention [0003] The present invention aims to solve the existing problems of large pressure pulsation and narrow load adjustment range wh...
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Patent Timeline
Login to View More IPC IPC(8): F15B11/17F15B11/028F15B19/00F15B21/00F15B21/041G01M3/28G01M13/003
CPCF15B11/17F15B11/028F15B19/00F15B21/008F15B21/041G01M13/003G01M3/2876F15B2211/20576F15B2211/20538F15B2211/20546F15B2211/315
Inventor 张健罗念宁姜继海
Owner HARBIN INST OF TECH