Title:
SYSTEM AND METHOD FOR MEASURING CREEP OF HYDRO-GENERATOR BY USING IMAGE MONITORING
Document Type and Number:
WIPO Patent Application WO/2023/169255
Kind Code:
A1
Abstract:
A system and method for measuring creep of a hydro-generator by using image monitoring. A circle of color tape in the shape of a "sawtooth waveform" is provided around an outer wall of a main shaft (1) of a hydro-generator, and the "sawtooth waveform" of the color tape is formed by the arrangement of isosceles right triangles; hypotenuses of the isosceles right triangles form a straight line segment, and the isosceles right triangles are coated with color codes; and a camera (2) is provided right opposite the main shaft (1) of the hydro-generator, and the camera (2) performs image capturing on the color tapes and performing imaging on an imaging plane (3) at a rear end. The main shaft (1) of the hydro-generator is continuously photographed by an image monitoring device which is fixedly installed on a peripheral wall face of the main shaft (1) of the hydro-generator, such that image sampling is performed; data is fed back to an image processing terminal; and the image processing terminal automatically extracts feature vectors on a reference image and the current image, calculates a unit creep angle by using a specific algorithm, and sends an alarm signal after the creep angle reaches an alarm value.
Inventors:
CHEN ZHEZHI (CN)
XIONG TENGQING (CN)
LI CHUHUI (CN)
JIA LITAO (CN)
YANG SAI (CN)
ZHANG YIHUA (CN)
TANG XIAODAN (CN)
HUANG HUA (CN)
WANG YONGJUN (CN)
LUAN JUN (CN)
ZENG SHUN (CN)
WANG ZHONGCHANG (CN)
XIONG TENGQING (CN)
LI CHUHUI (CN)
JIA LITAO (CN)
YANG SAI (CN)
ZHANG YIHUA (CN)
TANG XIAODAN (CN)
HUANG HUA (CN)
WANG YONGJUN (CN)
LUAN JUN (CN)
ZENG SHUN (CN)
WANG ZHONGCHANG (CN)
Application Number:
PCT/CN2023/078715
Publication Date:
September 14, 2023
Filing Date:
February 28, 2023
Export Citation:
Assignee:
CHINA YANGTZE POWER CO LTD (CN)
International Classes:
G01M15/02; G01M13/02
Foreign References:
| CN114689288A | 2022-07-01 | |||
| CN113252939A | 2021-08-13 | |||
| CN106769020A | 2017-05-31 | |||
| CN111169149A | 2020-05-19 | |||
| CN106482648A | 2017-03-08 | |||
| CH650331A5 | 1985-07-15 | |||
| GB978078A | 1964-12-16 |
Attorney, Agent or Firm:
YICHANG THREE GORGES PATENT (CN)
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