A dual-channel electro-hydraulic servo valve life test and testing device

An electro-hydraulic servo valve, life test technology, applied in valve device, measuring device, mechanical valve test and other directions, can solve the problem of low utilization rate of life test bench, improve oil passing efficiency, improve utilization efficiency, and high control accuracy Effect

Active Publication Date: 2021-11-19
AVIC NANJING SERVO CONTROL SYST CO LTD
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Problems solved by technology

In order to overcome the shortcomings of the low utilization rate of the traditional electro-hydraulic servo valve life test bench, a device with simple structure, high reliability, and automatic switching of single / double electro-hydraulic servo valve product life testing and testing was developed, which is very useful for lifting electro-hydraulic servo valves. The life test efficiency of the valve has very important theoretical significance and engineering application value

Method used

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  • A dual-channel electro-hydraulic servo valve life test and testing device
  • A dual-channel electro-hydraulic servo valve life test and testing device
  • A dual-channel electro-hydraulic servo valve life test and testing device

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Embodiment 1

[0032] The invention provides a dual-channel electro-hydraulic servo valve life test and testing device, such as figure 1 As shown, the life test and testing device includes a valve core 1, a valve sleeve 2, a housing 3, a return spring 4, a plug 5, a control servo valve 6, a test product A7, and a test product B8; core cavity; the valve sleeve 2 is provided with six ring grooves in the axial direction, and the bottom surface of each ring groove is provided with four symmetrical ports; the shell 3 is provided with a shell ring groove corresponding to each ring groove; the ring groove and the corresponding shell ring groove to form an annular channel, which are respectively a channel, b channel, c channel, d channel, e channel and f channel; a return spring 4 is arranged between the valve core 1 and the plug 5; the shell The body 3 is provided with an oil inlet passage and an oil return passage; the oil inlet passage connects the oil inlet of the control servo valve 6, the oil ...

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Abstract

The invention belongs to the technical field of mechanical engineering and discloses a life test and a test device for a two-way electro-hydraulic servo valve. The device includes: valve core, valve sleeve, shell, reset spring, plug, servo valve for control, test product A, test product B; there is a core cavity in the valve core; 6 valve sleeves are arranged in sequence in the axial direction. The bottom surface of each ring groove is provided with four symmetrical ports; the ring groove and the corresponding housing ring groove form an annular channel. Compared with the traditional life test device, it has the advantages of high test efficiency, simultaneous life test and performance test, and flexible switching of the test states of the two test products; the automatic switching of the states of the two test products can be realized by using the servo valve for control, which has the advantages of simple structure, The advantages of convenient operation and high reliability.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a life test and testing device of a two-way electro-hydraulic servo valve. Background technique [0002] Since the traditional electro-hydraulic servo valve life test device can only conduct life tests on a single test product, the utilization rate of the test bench is low, and with the increasing demand for electro-hydraulic servo valves such as aircraft and missiles, the reduction in The life test cost of the servo valve and the improvement of the test efficiency have become urgent problems to be solved; in the life test process, the performance index of the electro-hydraulic servo valve can be tested without disassembling the test product has become the focus of attention in the field of electro-hydraulic servo valve testing . In order to overcome the shortcomings of the low utilization rate of the traditional electro-hydraulic servo valve life test bench, a devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/065F16K3/314F15B19/00G01M13/003G01R31/00
CPCF15B19/00F16K3/314F16K11/065G01R31/00G01M13/003
Inventor 宗满意宋伟山赵天扬周明轩
Owner AVIC NANJING SERVO CONTROL SYST CO LTD
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