Rotating machinery structural strength simulation system and method based on direct analogy calculation

Abstract

The invention provides a rotating machinery structural strength simulation system and method based on direct analogy calculation, a non-contact rotating speed sensor detects a rotating speed analog signal when a rotor operates, an oil temperature sensor detects an oil temperature analog signal when the rotor operates, and a vibration sensor detects a shell vibration analog signal when the rotor operates; a calculation module receives the rotating speed analog signal, the oil temperature analog signal and the shell vibration analog signal through the analog signal input interface and then carries out analog simulation to obtain a structural strength analog signal, and the structural strength analog signal is converted into a structural strength digital signal through the analog-to-digital conversion output interface to be output. A data analysis server corrects the structural strength digital signal by using a compensation function to obtain a corrected structural strength digital signal, and displays a curve graph of the corrected structural strength digital signal and time in real time to represent a relationship between the structural strength and the time when the rotating machinery structure operates. An alarm is given when the corrected structural strength digital signal reaches an alarm limit value.

Description

technical field [0001] The invention relates to the technical field of real-time simulation of structural strength of rotating machinery, in particular to a real-time simulation system and method for structural strength of rotating machinery based on direct analog calculation. Background technique [0002] The main components of aero-engines, gas turbines, helicopter rotors, and motors all include highly complex rotating mechanical structures, which mainly include rotors, bearings, and housings. [0003] The rotor is the core component of rotating machinery. Usually the rotor is supported by oil film bearings, rolling bearings or other types of bearings on non-rotating parts such as bearing housings or casings, boxes and foundations, thus forming a so-called "rotor-supporting system". Whether a rotating machine can work reliably It mainly depends on whether the movement of the rotor is normal. A large number of facts show that most of the vibration faults of rotating machi...

AI Technical Summary

Problems solved by technology

This solution replaces the supporting computer with a server, but since the data acquisition service is composed of different solutions, it is difficult to integrate cloud services, and there is a potential risk of difficult data quality assurance

[0019] 1. Only use sensor data for runtime monitoring. Since the direct data of the monitored components cannot be collected, it belongs to indirect monitoring. Its fitting accuracy has large errors and cannot be effectively guaranteed

[0020] 2. Indirect monitoring needs long-term data collection and historical fault data of the monitored object as the basis to find a monitoring fitting algorithm. Although there are methods such as machine learning and artificial intelligence, it is easy to cause large errors due to cognitive deviation during fitting

[0021] 3. The number and types of sensors are limited by the layout conditions of the monitored components, and relatively harsh conditions will cause this solution to fail to produce actual results

[0022] 4. For disposable equipment, or due to customization and other reasons, the number of monitored equipment is not enough to form enough large data, this monitoring method has no practical value

[0023] 5. The finite element is used as a supplement to the sensor data, and it is possible to calculate the surrounding data as direct data through the finite element, which improves the scope of application of monitoring at a certain level, but so far the computational efficiency of the finite element algorithm cannot guarantee real-time monitoring requirements

[0024] 6. Due to real-time differences, the finite element calculation scheme can only be used for asynchronous sampling calculations, which reduces false positives at a certain level, but cannot effectively reduce false positives

[0025] 7. The finite element solver needs to be customized for every set of monitored equipment, which requires a huge amount of calculation, resulting in huge costs

[0026] The system consists of a data acquisition computer, a simulation computer, and a data analysis computer. It needs to process a huge amount of data and a huge amount of calculation, resulting in uncontrollable costs and no practical value for low value-added mechanical equipment.

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