A visual test bench for performance testing of hydraulic valves

A technology of experimental bench and hydraulic valve, which is applied in fluid pressure actuation system test, fluid pressure actuation device, mechanical equipment, etc. It can solve the problem of not being able to effectively grasp the flow field of the valve channel and the uncontrollable pressure and flow conditions of the experimental valve, etc. Problems, to achieve accurate and more comprehensive experimental values, high light transmittance, and improve the effect of safety

Active Publication Date: 2020-11-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the hydraulic valve performance detection test bench in the prior art cannot effectively grasp the flow field of the valve channel, and the pressure and flow conditions of the experimental valve are uncontrollable during the experiment

Method used

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  • A visual test bench for performance testing of hydraulic valves
  • A visual test bench for performance testing of hydraulic valves
  • A visual test bench for performance testing of hydraulic valves

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specific Embodiment approach 1

[0015] Specific implementation mode one: refer to figure 1 and figure 2 Specifically explain this embodiment, a visual test bench for hydraulic valve performance detection described in this embodiment, which includes a fuel tank 1, a hydraulic pump 3, a pressure gauge 4, a speed control valve 7, a pilot fixed value Pressure valve 8, No. 1 pressure sensor 9, visualization experiment valve 10, No. 2 pressure sensor 11, pilot relief valve 12, flow sensor 13, temperature sensor 14, electromagnetic reversing valve 15, cooler 16, No. 2 hydraulic pump 17 and heater 20;

[0016] The inside of the fuel tank 1 is fixedly connected with a horizontal partition 1-1, and the horizontal partition 1-1 divides the fuel tank 1 into two cavities, the lower cavity is used to load fuel oil, the upper cavity is used to place experimental instruments, and the upper cavity The cavity wall of the body is made of transparent material;

[0017] The electromagnetic reversing valve 15 is provided with...

specific Embodiment approach 2

[0020] Specific embodiment 2: This embodiment is to further limit the visualization test bench for hydraulic valve performance detection described in specific embodiment 1. In this embodiment, the test bench also includes No. 1 filter 2 and No. 2 filter 18, No. 1 filter 2 is installed on the oil suction end of No. 1 hydraulic pump 3, and No. 2 filter 18 is installed on the oil suction end of No. 2 hydraulic pump 17. Other compositions and connection methods are the same as those in Embodiment 1.

[0021] In this way, the No. 1 filter 2 and No. 2 filter 18 are mainly used to filter the hydraulic oil, so as to prevent some impurities in the hydraulic oil from entering the experimental pipeline under the action of the hydraulic pump and cause damage to some experimental instruments, reducing the test bench. service life.

specific Embodiment approach 3

[0022] Specific embodiment three: this embodiment is to further limit the visualization test bench for performance detection of hydraulic valves described in specific embodiment one. In this embodiment, the test bench also includes a direct-acting relief valve 5. The direct-acting overflow valve 5 is fixedly connected to the horizontal partition 1-1, and the direct-acting overflow valve 5 is set between the speed control valve 7 and the pressure gauge 4. The input of the direct-acting overflow valve 5 The end is connected with the output end of the pressure gauge 4 through the oil pipe, and the output end of the direct-acting overflow valve 5 is connected with the lower cavity of the fuel tank 1 . Other compositions and connection methods are the same as those in Embodiment 1.

[0023] With this setting, the operator can properly adjust the outlet pressure of the No. 1 hydraulic pump 3 through the direct-acting relief valve 5, so as to avoid the impact damage to the test bench...

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PUM

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Abstract

The invention relates to a visualized test bench for testing hydraulic valve performance, relating to the field of hydraulic valve performance testing devices, and aiming at solving the problems that the condition of runner flow field of a valve cannot be effectively known, and the experimental valve pressure flow condition is uncontrollable during the experimental process when the test bench in the prior art is used. The visualized test bench for testing hydraulic valve performance comprises a fuel tank, a hydraulic pump No. 1, a pressure gauge, a speed regulating valve, a pilot-type constant pressure reducing valve, a pressure sensor No. 1, a visualized experimental valve, a pressure sensor No. 2, a pilot type relief valve, a flow sensor, a temperature sensor, an electromagnetic reversing valve, a cooler, a hydraulic pump No. 2 and a heater. The visualized test bench is mainly used for the hydraulic valve performance testing process, and an operator can conveniently observe the condition of the runner flow field when the valve is working.

Description

technical field [0001] The invention relates to a visual test bench for hydraulic valve performance detection, which belongs to the field of hydraulic valve performance detection devices. Background technique [0002] The hydraulic valve is an important control element of the hydraulic system, which can realize the control of parameters such as the pressure and flow of the hydraulic system. It is an indispensable component of the hydraulic system, and its performance directly affects the working performance of the hydraulic system. Due to the structural characteristics of hydraulic valves, problems such as complex internal flow field, easy cavitation, low working reliability and easy damage are often caused. Therefore, it is of great significance to conduct performance experiments on hydraulic valves and then grasp the direction of optimal design of hydraulic valves. The traditional hydraulic test bench can only test the pressure and flow characteristics of the hydraulic va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00
CPCF15B19/00
Inventor 张健姜继海罗婷婷
Owner HARBIN INST OF TECH
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