Portable type electro-hydraulic servo valve online/offline detection device and method

Abstract

The invention relates to a portable type electro-hydraulic servo valve online / offline detection device and method. The portable type electro-hydraulic servo valve online / offline detection device comprises a sensor integrated valve block assembly, a first adapter plate used for connecting the sensor integrated valve block assembly and a detected servo valve and a second adapter plate used for connecting an original working hydraulic system pipeline and the sensor integrated valve block assembly. The detecting method comprises online detection and offline detection. The online detection method comprises the steps that the servo valve is connected with an original system load, when the system is in the normal work state, the sensor integrated valve block assembly detects the pressure, flow and leakage information of the servo valve, and then whether the servo valve normally works or not is judged. The offline detection method comprises the steps that a pressure regulating valve is adoptedto simulate the load, then a sensor detects the servo valve, wherein detection specifically comprises zero load flow characteristic test, pressure characteristic test, a leakage characteristic test and a load flow characteristic test. The portable type electro-hydraulic servo valve online / offline detection device and method can lower the detection cost of the servo valve, improve the detection efficiency and have great significance in testing and fault detection of the servo valve.

Description

technical field [0001] The invention relates to the technical field of electro-hydraulic servo valves, in particular to a portable electro-hydraulic servo valve on / off-line detection device and a method thereof. Background technique [0002] Servo valve is the core control element in the electro-hydraulic servo system, but because the failure of the servo valve itself is inconvenient to detect, it is particularly important to detect the servo valve in time to prevent the failure. At this stage, the online detection methods and offline detection methods mainly used in the industry have some problems. The existing on-line detection method requires the test sensor of the servo valve to be built into the system at the beginning of the system design. Although it has the advantages of high integration and detection under the working condition of the system, it increases the manufacturing and assembly costs of the system. [0003] The existing offline detection method is mainly us...

AI Technical Summary

Problems solved by technology

[0003] The existing offline detection method is mainly used in the test system of the servo valve maintenance and testing manufacturer. Although the offline detection method can reduce the cost of servo valve detection, it needs to remove the servo valve from the original servo system and install it on an independent testing device. It takes a lot of time and manpower, and the equipment cannot work normally while the servo valve is faulty and waiting for detection, resulting in a decrease in production efficiency

Therefore, there are certain defects and deficiencies in the existing methods for detecting servo valves, and there is still a lot of room for improvement and perfection.

Images