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Hydraulic pump impact test pressure instantaneous variation device and method

A technology of impact test and instantaneous change, which is applied in pump test, liquid displacement machinery, machine/engine, etc. It can solve the problems of poor impact effect, expensive servo valve, pollution sensitivity, etc.

Inactive Publication Date: 2019-01-11
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, in order to achieve pressure impact, a reversing valve is usually used, but the general electromagnetic reversing valve takes a long time to change direction and the impact effect is poor. Using a high-frequency servo control valve, although the impact effect is better, the servo valve is expensive. And it is more sensitive to pollution and difficult to promote
Due to the above reasons, the impact test promotion effect in the industry is poor

Method used

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  • Hydraulic pump impact test pressure instantaneous variation device and method

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Embodiment Construction

[0016] The following describes the technical solutions in the embodiments of the present invention clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0017] A method for the instantaneous pressure change of the hydraulic pump shock test. The first reversing valve is used to perform the shock test on the tested hydraulic pump, and the first reversing valve is controlled by the instantaneous reversing mechanism to realize the instantaneous pressure change. The instantaneous reversing mechanism can adopt a pneumatic mechanism, which can realize instantaneous reversal by hitting the spool of the reversing valve by the pneumatic mechanism.

[0018] Such as figure 1 Shown, a hydr...

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Abstract

The invention belongs to the technical field of hydraulic pump impact tests, and particularly relates to a hydraulic pump impact test pressure instantaneous variation device and method. The hydraulicpump impact test pressure instantaneous variation device comprises a tested hydraulic pump, a first reversing valve and a pneumatic reversing mechanism, the tested hydraulic pump communicates with thefirst reversing valve, the pneumatic reversing mechanism is connected with the first reversing valve, and moving of a valve element of the first reversing valve can be achieved through the pneumaticreversing mechanism. Moving of the valve element of the first reversing valve can be achieved through the pneumatic reversing mechanism, and the instantaneous reversing purpose is achieved. An air cylinder piston rod moves at the final instantaneous speed to impact a valve element of the reserving valve, and the instantaneous action is achieved. Back-and-forth reversing is achieved through the actions of two air cylinders, and the test purpose is achieved.

Description

Technical field [0001] The invention belongs to the technical field of hydraulic pump impact test, and in particular relates to a device and method for instantaneous changes in pressure of a hydraulic pump impact test. Background technique [0002] As the power component of the hydraulic system, the hydraulic pump is the heart of the hydraulic system, and its performance directly affects the performance of the hydraulic system. The impact performance test of the hydraulic pump is a necessary test method for the reliability of the hydraulic pump. Generally, in order to achieve pressure shock, a reversing valve is usually used. However, the general electromagnetic reversing valve takes a long time and has a poor impact effect. The high-frequency servo control valve is used. Although the impact effect is better, the servo valve is expensive. It is more sensitive to pollution and difficult to promote. Due to the above reasons, the impact test promotion effect in the industry is rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 安高成赵海宇范宏权毋嘉豪徐彦杜威李晓东李伟良韩浩王芮彬周文韬
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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