Sliding bearing performance simulation system based on Modelica language and modeling method thereof

Abstract

The invention provides a sliding bearing performance simulation system modeling method based on the Modelica language and a system thereof. The method comprises the steps that a decomposition system decomposes a whole sliding bearing system into a bearing rotor subsystem and a peripheral auxiliary subsystem in a modularized mode, and then the bearing rotor subsystem and the peripheral auxiliary subsystem are decomposed into components; the system models and builds component model bases corresponding to the components, the component model bases are combined into an assembly model base, according to the assembly model base, a bearing rotor subsystem model base and a peripheral auxiliary subsystem model base are built, and according to the bearing rotor subsystem model base and the peripheral auxiliary subsystem model base, a sliding bearing system model is constructed; parameters of the sliding bearing system model are verified and set in a simulation mode, and the sliding bearing operation performance and the dynamics performance of a supporting rotor thereof are analyzed and verified in a simulation mode. User's workloads are simplified, the model using difficulty is lowered, and the testing effect can be further improved.

Description

technical field [0001] The invention relates to the field of sliding bearing performance tests, in particular to a sliding bearing performance simulation system based on Modelica language and a modeling method thereof. Background technique [0002] Sliding bearings are key components of large-scale rotating machinery such as steam turbines, generators, pumps, and fans. They play an important role in supporting the rotor and separating rotating and stationary components. Their operating performance is crucial to ensure the safe and stable operation of the unit. When the sliding bearing is working, it is required that the temperature of the oil film should not be too high, the thickness of the oil film should not be too small, and the pressure of the oil film should not be too high. Its dynamic characteristics directly affect the stability and critical speed of the entire rotor system. With the continuous increase of unit capacity and the continuous reduction of product delive...

AI Technical Summary

Problems solved by technology

This not only requires the user to understand the entire program, but also requires the ability to understand the data transfer methods and skills of the original programmer. Otherwise, even if the user-defined module does not have any grammatical errors, it will easily disrupt the original data transfer mechanism and cause problems. mistake

In addition, program designers are required to have a very in-depth understanding of sliding bearings and rotor dynamics in order to design the most suitable method, which undoubtedly increases the cost and difficulty of program design.

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