Continuous pump storage unit axis measuring and adjusting method

A pumped storage unit and axis measurement technology, which is applied to measuring devices, instruments, and electric devices, etc., can solve the problems of uneven rotational speed of the large shaft and reduce the working time of cranking, etc.

Active Publication Date: 2015-08-19
SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for measuring and adjusting the axis of a continuous pumped storage unit, which can realize data sampling at any rotation angle and any number of points, filter out high-order interference harmonics, and solve the problem by phase recognition technology For the problem of uneven rotation speed of the large shaft, the system can not

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Continuous pump storage unit axis measuring and adjusting method
  • Continuous pump storage unit axis measuring and adjusting method
  • Continuous pump storage unit axis measuring and adjusting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to understand the essence of the present invention more clearly and intuitively.

[0054] like figure 1 As shown, it is an embodiment of the method for adjusting the axis of the pumped storage unit according to the present invention, and the intelligent adjustment system for the axis of the pumped storage unit used in the method is as follows: Figure 5, including sequentially connected sensor system 1, data acquisition system 2, and data processing and analysis system 3, the data processing and analysis system includes three main modules, sequentially connected software filtering 31, phase recognition 32, and data sine fitting 33, for the present have technology.

[0055] This method comprises the following steps:

[0056] S1: Sensor calibration: calibrate the sensors of each channel before turning;

[0057] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A continuous pump storage unit axis measuring and adjusting method includes the steps of: S1. sensor calibration: calibrating a sensor of each channel before barring; S2. data sampling: sampling in an independent parallel mode of multiple channels; S3. data filtering: using FIR Chebyshev type-I low-pass digital filtering; S4: phase recognition: using phase recognition technology to recognize and mark an initial phase and a phase of a sampling point; and S5. sine fitting: adopting particle swarm optimization to obtain a throw initial phase, a throw amplitude value and a throw DC component of a throw sine curve. The continuous pump storage unit axis measuring and adjusting method provided by the invention can realize data sampling of any rotation angle and any point number, filters higher interference harmonics, and solves the problem of nonuniform rotation speed of a large shaft through phase recognition technology; the method also improves axis inspection precision of a unit, shortens barring time, reduces manpower required by barring, and brings huge economic benefits; and a system interface that is adopted is concise, the method is easy to operate and implement, and the method has general popularization value for unit axis inspection and adjustment.

Description

technical field [0001] The invention relates to a method for measuring and adjusting the axis of a continuous pumped storage unit. Background technique [0002] The axis measurement, analysis and adjustment of large vertical hydro-generator units (including pumped storage units) are the most critical procedures in the maintenance of the unit, occupying most of the maintenance period of the unit, and the success or failure of the axis adjustment work will directly affect the maintenance of the unit The success or failure of the work, this is because the condition of the axis of the unit will directly affect the stability of the unit operation and the normal operation of the guide bearing. Fast and accurate axis adjustment technology will greatly improve the efficiency of maintenance work and bring huge economic benefits, which is of great significance to the improvement of power plant benefits. [0003] At present, the axis adjustment and processing technology of my country'...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01B7/312G01B11/27
Inventor 彭铖杨梦起傅广泽王文辉陈满肖苏平钟雪辉马胜密李崇威
Owner SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products