Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Vortex detecting and positioning method for water inlet pool of vertical axial flow pump station
The invention provides a vertical axial flow pump station water inlet pool vortex detection and positioning method, which comprises the following steps: S1, carrying out three-dimensional numerical modeling on a vertical axial flow pump station, and carrying out three-dimensional steady and unsteady numerical simulation on a pump station by using fluid mechanics calculation software by taking the operation condition of the pump station as a boundary condition; carrying out vortex identification on numerical simulation results under different working conditions by adopting a vortex identification method, and determining the number and occurrence positions of vortexes; s2, building an equal-proportion reduction entity model of the vertical axial flow pump station, carrying out model test research according to a simulation result, and determining the number and the occurrence position of vortexes; s3, predicting the number of vortexes and the occurrence position according to the results, and correspondingly installing a pressure pulsation sensor in an actual pump station; s4, collecting pressure pulsation signal data, and performing time domain and frequency domain spectral line analysis on the data; and S5, judging whether a vortex occurs or not according to a spectrogram analysis result of the pressure pulsation signal.
本发明提供一种立式轴流泵站进水池漩涡检测及定位方法，包括以下步骤：S1、对立式轴流泵站进行三维数值建模，以泵站运行工况为边界条件，使用流体力学计算软件对泵站进行三维定常和非定常数值模拟，采用涡识别方法对不同工况下数值模拟结果进行漩涡识别，确定漩涡个数和发生位置；S2、搭建立式轴流泵站的等比例缩小实体模型，对照模拟的结果开展模型试验研究，对漩涡的个数和发生位置进行确定；S3、根据以上结果预测漩涡个数和发生位置并相应地在实际泵站中安装压力脉动传感器；S4、采集压力脉动信号数据，对数据进行时域及频域谱线分析；S5、根据压力脉动信号的频谱图分析结果判断是否有漩涡发生。
Vortex detecting and positioning method for water inlet pool of vertical axial flow pump station
The invention provides a vertical axial flow pump station water inlet pool vortex detection and positioning method, which comprises the following steps: S1, carrying out three-dimensional numerical modeling on a vertical axial flow pump station, and carrying out three-dimensional steady and unsteady numerical simulation on a pump station by using fluid mechanics calculation software by taking the operation condition of the pump station as a boundary condition; carrying out vortex identification on numerical simulation results under different working conditions by adopting a vortex identification method, and determining the number and occurrence positions of vortexes; s2, building an equal-proportion reduction entity model of the vertical axial flow pump station, carrying out model test research according to a simulation result, and determining the number and the occurrence position of vortexes; s3, predicting the number of vortexes and the occurrence position according to the results, and correspondingly installing a pressure pulsation sensor in an actual pump station; s4, collecting pressure pulsation signal data, and performing time domain and frequency domain spectral line analysis on the data; and S5, judging whether a vortex occurs or not according to a spectrogram analysis result of the pressure pulsation signal.
本发明提供一种立式轴流泵站进水池漩涡检测及定位方法，包括以下步骤：S1、对立式轴流泵站进行三维数值建模，以泵站运行工况为边界条件，使用流体力学计算软件对泵站进行三维定常和非定常数值模拟，采用涡识别方法对不同工况下数值模拟结果进行漩涡识别，确定漩涡个数和发生位置；S2、搭建立式轴流泵站的等比例缩小实体模型，对照模拟的结果开展模型试验研究，对漩涡的个数和发生位置进行确定；S3、根据以上结果预测漩涡个数和发生位置并相应地在实际泵站中安装压力脉动传感器；S4、采集压力脉动信号数据，对数据进行时域及频域谱线分析；S5、根据压力脉动信号的频谱图分析结果判断是否有漩涡发生。
Vortex detecting and positioning method for water inlet pool of vertical axial flow pump station
一种立式轴流泵站进水池漩涡检测及定位方法
JIAO WEIXUAN (Autor:in) / CHENG LI (Autor:in) / LU GUANGTIAN (Autor:in) / CHEN XIAOBING (Autor:in) / LI WEI (Autor:in) / PAN XIN (Autor:in) / TANG LEI (Autor:in)
18.10.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
/
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
,
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
/
G01F
Messen des Volumens, des Durchflussvolumens, des Massendurchflusses oder des Füllstandes
,
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL
/
G09B
Unterrichts- oder Vorführungsgeräte
,
EDUCATIONAL OR DEMONSTRATION APPLIANCES
Integrated pump station water inlet end flow guide device
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024