Method for accurately and continuously measuring and processing axis throw of hydraulic turbine set

An axis and unit technology, which is applied in the field of accurate and continuous measurement and processing of the axis swing of a hydraulic turbine unit, can solve the problems of fast operation speed, high accuracy, and short construction period, and achieves improved measurement accuracy, accurate and fast adjustment, and accurate measurement and adjustment. Effect

Inactive Publication Date: 2013-08-14
CHINA GEZHOUBA GROUP CO LTD
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for accurate and continuous measurement and processing of the axial swing of the

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
  • Method for accurately and continuously measuring and processing axis throw of hydraulic turbine set
  • Method for accurately and continuously measuring and processing axis throw of hydraulic turbine set
  • Method for accurately and continuously measuring and processing axis throw of hydraulic turbine set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] A method for accurate and continuous measurement and processing of the axis swing of a water turbine unit, comprising the following steps:

[0038] 1. Combined with the actual project situation and the axis structure of the unit, based on the sinusoidal curve equation of the axis swing of the unit and the calculation formula of the maximum swing value eccentricity, eccentricity angle and correction value, the system program is written in combination with the swing value measurement data acquisition method .

[0039] According to the shaft system composition of the unit, a displacement sensor for measuring the displacement of the outer wall is set on each component shaft as a measuring point. In this example such as figure 1 As shown in , the measuring section 1 of the collector ring, the measuring section 2 of the upper end shaft, the measuring section 3 of the rotor center body, the measuring section 4 of the lower end shaft, the measuring section 5 of the turbine sha...

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 method for accurately and continuously measuring and processing an axis throw of a hydraulic turbine set comprises the steps as follows: 1) according to a shafting composition of the set, a displacement sensor used for measuring outer wall displacement is arranged on each composition shaft and taken as a measuring point; 2) corresponding displacement values epsilon i are obtained according to rotation angles theta i; 3) according to multiple displacement values epsilon i, a fitting axis throw sine curve is obtained, and components of the maximum throw values on an X axis and on a Y axis are obtained through the throw sine curve; 4) the maximum throw eccentric distance and eccentric angle of each measuring section are obtained through calculation; and 5) a guide bearing measurement section is taken as a standard, and correction values of axis sections are obtained through calculation of coordinate points of the maximum throw eccentric distances. According to the method, an actual operation condition of the set can be more truly simulated, measured data are more accurate, the set is more accurately and faster adjusted, the installation rate of the set is accelerated, the installation quality of the set is guaranteed, and conditions are provided for safe operation of the set.

Description

technical field [0001] The invention relates to the field of axis swing measurement of hydraulic turbine generating sets, in particular to a method for accurate and continuous measurement and processing of the axis swing of a hydraulic turbine set aimed at the high-precision requirements for the installation and adjustment of modern giant water turbine sets. Background technique [0002] When the hydro-generator unit is installed, because the friction surface of the mirror plate is not perpendicular to the axis of the unit, or the axis of the unit itself is tortuous, the unit will swing. The size of the axial swing of the unit is one of the main technical indicators to measure the manufacturing and installation quality of the hydro-generator unit. Keeping the axial swing value of the unit within the allowable range is the key point to ensure the stable and reliable operation of the unit. Unit cranking is an important process for measuring the axis swing of the unit. Under n...

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): G01B7/30G01B7/31G01B11/26G01B11/27
Inventor 江小兵周晖吴建宏陈强程志华江晨
Owner CHINA GEZHOUBA GROUP 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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap