Servo online oil sampling and controlling device and method

Abstract

The invention discloses a servo online oil sampling and controlling device and a method. The servo online oil sampling and controlling device comprises a water pump, a direct current power supply interface, a power supply conversion unit as well as a CAN (Controller Area Network) communication unit, an ARM (Advanced Reduced Instruction Set Computer Machine) chip, an information acquisition and feedback unit, a control driving unit and a solenoid valve which are respectively connected with the power supply conversion unit, wherein the ARM chip is used for realizing the dual closed-loop control for the sampling amount and the flow speed of a sample by the control driving unit; and during detection, the solenoid valve is opened and oil enters the device under the action of the water pump. The method is realized in such a way that when the water pump works, the information acquisition and feedback unit is used for acquiring an rotating angle and speed of a water pump impeller in real time and transmitting the rotating angle and speed to the ARM chip; and the ARM chip is used for calculating a fed signal valve and then comparing the calculated signal valve with expected values of the given sampling amount and the flow speed of the sample and further adjusting the operation state of the water pump according to the difference between the calculated signal valve and the expected values. The servo online oil sampling and controlling device and the method disclosed by the invention have the advantages of simple structure, high calculation speed, high communication efficiency, convenience in expansion and self-protecting function of current closed loop.

Description

Technical field [0001] The invention relates to the technical field of condition monitoring and fault diagnosis of a friction lubrication system of mechanical equipment, in particular to a servo online oil sampling control device and method. Background technique [0002] The lubricating oil used in mechanical equipment has the functions of reducing the frictional resistance between the surface of the parts, reducing the wear of surface materials, ensuring the safe and reliable operation of the equipment, and extending the service life of the equipment. It is a necessary working medium for industrial machinery and equipment. However, the performance of lubricating oil will decay under the effects of long-term shear, frictional heat, pollution, etc., which directly affects the lubrication performance of the friction pair of machinery and equipment. At present, the performance evaluation of in-use lubricating oil is mainly based on offline sampling analysis. [0003] Lubricant offline...

AI Technical Summary

Problems solved by technology

In the process of offline oil monitoring and analysis, the most important thing is to regularly sample lubricating oil. Since it is impossible to send it to various professional testing laboratories for analysis and evaluation in time, it may delay the judgment of mechanical equipment failures; at the same time, in order to meet the needs of large-scale continuous operation equipment, key Equipment and equipment with high safety requirements require real-time on-site monitoring and diagnosis, and the use of online monitoring technology for lubricating oil is particularly necessary

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