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Temperature field virtual reality real-time reconstruction method for turbine service performance monitoring

A technology of virtual reality and temperature field, applied in nuclear power generation, greenhouse gas reduction, climate sustainability, etc., can solve the problems of inability to do real-time data-driven heat dissipation analysis, complex flow, etc., and achieve the full speed of investigation and maintenance process, simplifies the cumbersome process, and reduces the cost of manpower and material resources

Active Publication Date: 2020-07-17
ZHEJIANG UNIV
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Problems solved by technology

However, because there are many components in the low-pressure cylinder and the flow is complicated, the finite element simulation calculation using fluid-solid coupling is time-consuming, and it is impossible to achieve real-time data-driven heat dissipation analysis during the operation of the steam turbine

Method used

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  • Temperature field virtual reality real-time reconstruction method for turbine service performance monitoring
  • Temperature field virtual reality real-time reconstruction method for turbine service performance monitoring
  • Temperature field virtual reality real-time reconstruction method for turbine service performance monitoring

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing and specific example the present invention will be further described:

[0035] Such as figure 1 As shown, the embodiment of the present invention uses a steam turbine as an example for illustration, specifically including the following steps:

[0036] S1. Select the simulation temperature field sampling point set of the steam turbine;

[0037] Firstly, the temperature state data of the rotor in the steam turbine is collected from the beginning of acceleration to the stable speed, and then the collected data is simplified and losslessly compressed and encoded.

[0038] S11. For the finite element analysis results of K (K>48) simulated temperature fields, calculate x for every two points on the temperature field i and x j The semivariance between:

[0039]

[0040] Among them, y (k) (x i ) is the midpoint x of the kth result i the temperature value above;

[0041] S12. Randomly select M sampling points on the simul...

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Abstract

The invention discloses a temperature field virtual reality real-time reconstruction method for turbine service performance monitoring. Performing finite element analysis on the steam turbine to obtain a finite element analysis result of the simulation temperature field, selecting a sampling point set of the steam turbine, and calculating a semi-variance between every two points on the simulationtemperature field; randomly selecting a plurality of sampling points on the simulation temperature field, reconstructing the spatial distribution of the temperature field, taking the finally obtainedreconstructed temperature field as a result, and presenting the change condition of the temperature field during the operation of the steam turbine in real time. By reconstructing the real-time finiteelement temperature field of the steam turbine, the temperature change condition of each structure in the running state of the steam turbine can be presented in real time in a visual mode in a virtual reality environment, and the performance monitoring of the running state of the steam turbine is realized.

Description

technical field [0001] The invention relates to a real-time processing method for the temperature field of a steam turbine, in particular to a virtual reality real-time reconstruction method for the temperature field used for monitoring the service performance of the steam turbine. Background technique [0002] Steam turbine is the most widely used prime mover in modern thermal power plants and nuclear power plants. Its outstanding advantages are high efficiency, large unit capacity, long life and stable operation process. It occupies an important position in the field of energy and industry. [0003] With the development of modern industrial technology, the improvement of steam parameters and the emergence of various complex and variable working conditions also pose considerable challenges to the requirements of steam turbine power generation units. The increase of the inlet steam temperature increases the temperature gradient inside the steam turbine, which will increase t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23
CPCY02E30/00
Inventor 刘振宇胡亮裘辿毛皓阳谭建荣
Owner ZHEJIANG UNIV
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