A servo valve detection system and method

Abstract

The invention relates to the technical field of hydraulic equipment, in particular to a servo valve detection system and method. A first ball valve, a pressure adjusting valve, a pressure gauge, a temperature sensor, an energy accumulator, a testing valve block, a pressure sensor A, a pressure gauge A, a second ball valve, a first three-way ball valve, a throttling loading valve, a proportional loading valve, a big gear flowmeter, a pinion flowmeter, a leakage flowmeter, a second three-way ball valve, a third ball valve, a pressure gauge B and a pressure sensor B are logically connected to form a testing loop, a zero load flow characteristic curve, a pressure characteristic curve, a leakage characteristic curve and a load flow characteristic curve obtained through testing are compared with corresponding standard characteristic curves of a servo valve, the state of the servo valve can be judged, disassembly and part replacement or cleaning and repair are conducted, and adjustment and repair are repeatedly conducted until the servo valve meets the assembling standards. The servo valve to be repaired does not need to return to a factory, the repair speed is high, the repair period is short, the service cycle of the servo valve is prolonged, the cost of spare parts is reduced, the maintenance cost is reduced, and the production demands are met.

Description

technical field [0001] The invention relates to the technical field of hydraulic equipment, in particular to a servo valve detection system and method. Background technique [0002] With the rapid development of my country's metallurgical equipment manufacturing technology, hydraulic servo control technology has been widely used. Servo valves, as the key core components of hydraulic control systems, are widely used in metallurgy, aviation, chemical and other fields, especially in iron and steel enterprises. In the hydraulic control system of the rolling production line (such as the hydraulic control system of the rolling mill AGC, looper, roll bending, roll shifting, etc.). Due to factors such as the use environment, oil pollution, and wear and aging of the servo valve, after a period of use, the servo valve will inevitably experience performance degradation, control accuracy deviation, and sudden failure, resulting in a large number of on-site inventory off-line Servo valve...

AI Technical Summary

Problems solved by technology

Due to factors such as the use environment, oil pollution, and wear and aging of the servo valve, after a period of use, the servo valve will inevitably experience performance degradation, control accuracy deviation, and sudden failure, resulting in a large number of on-site inventory off-line Servo valve to be repaired

[0003] Since the servo valve is an extremely precise hydraulic component, professional technicians and special performance testing equipment are required for maintenance, and the main parts are exclusively supplied, which cannot be purchased from the outside world, and even if they can be purchased, the price is relatively expensive. Therefore, in If the servo valve is not working properly, it can only be sent back to the original factory for repair after being taken off the machine. However, the cost of sending it back to the original factory for inspection and repair is high and the repair cycle is long, which not only increases the maintenance cost but also directly affects production.

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