Test-bed balance adjustment method for HP-IP rotor of 600 MW steam turbine

A balance correction, high and medium pressure technology, applied in the field of rotor test bench balance correction method, can solve the problems of low balance accuracy and low balance efficiency, and achieve the effect of improving balance efficiency and outstanding balance effect.

Active Publication Date: 2012-05-09
HARBIN TURBINE
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a test bench balance correction method for the high and medium pressure rotor of a 600 MW steam turbine, so as

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

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Specific Embodiment 1: The method of this embodiment includes the following steps: Step 1. Put the rotor in the balancing machine, increase the speed of the balancing machine to 500 rpm, and after 1-2 times of balancing times, control the rotation of each plane of the rotor. The residual balance is within 200 grams;

[0012] Step 2. Pump the vacuum chamber in the balancing machine into a vacuum state. The vacuum degree is 1-20mba. The balancing machine performs high-speed dynamic balancing. The rotating speed of the balancing machine is 500-3000 rpm. During the high-speed balancing process, the rotor When the vibration velocity of the first-order critical speed is greater than 2.5mm / s, add a balance weight to the middle plane of the rotor for weight adjustment. When the vibration speed of the first-order critical speed of the rotor is less than 2.5mm / s, the middle plane of the rotor will not be added;

[0013] Step 3. When balancing the vibration of the rotor at the wor...

specific Embodiment approach 2

[0017] Embodiment 2: The speed of the balancing machine in step 2 of this embodiment is 2900 rpm. This speed accurately yields the first critical speed of the rotor. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: the method of the present invention is used to correct and balance the test bench of the high and medium pressure rotor of CH01.271Z-3 steam turbine,

[0019] Put the rotor in the balancing machine, increase the speed of the balancing machine to 500 rpm, and after 2 times of balancing, control the residual balance of each plane of the rotor to be 190 grams; pump the vacuum chamber in the balancing machine to a vacuum state, The vacuum degree is 18mba, and the balancing machine carries out high-speed dynamic balancing, and the rotating speed of the balancing machine is 3000 rpm; measured data (see Table 1),

[0020] Table 1

[0021] Rotating speed

[0022] It is concluded that the vibration velocity at the first-order critical speed is less than 2.5mm / s, then the middle plane of the rotor does not need to be aggravated.

[0023] The rotor decomposes the mode shapes of measuring point 1 and measuring point 2 at 3000 rpm, in which the...

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 test-bed balance adjustment method for the HP-IP (High pressure-Intermediate Pressure) rotor of a 600 MW steam turbine relates to a method for the test-bed balance adjustment of a rotor and aims to solve the problems of low balance efficiency and low balance accuracy of the existing balance method for the HP-IP rotor of the 600 MW steam turbine. In a low speed balance process, the residual balance amount of each plane of the rotor is controlled within 200 g; in a high speed balance process, when the vibration velocity of the first-order critical rotating speed of the rotor is greater than 2.5 mm/s; a balance weight is arranged on the middle plane of the rotor for weight increase adjustment; when the vibration velocity of the first-order critical rotating speed of the rotor is lower than 2.5 mm/s, no weight is increased on the middle.

Description

technical field [0001] The invention relates to a test bench balance correction method for a rotor. Background technique [0002] The existing method of balancing the high and medium pressure rotors of a 600 MW steam turbine is mainly the traditional influence coefficient method. Since the initial state of each rotor is different, and the position when installed on the balancing machine pendulum is also different, the influence of each rotor coefficients are not the same. To balance each new rotor, you need to collect its own influence coefficient. Using different weighting planes will result in different influence coefficients. Therefore, balancing a rotor with the influence coefficient method requires 5-10 times of balancing. Not only is the balancing efficiency low, but also The balance accuracy can only reach 2.5mm / s. Contents of the invention [0003] The purpose of the present invention is to provide a test bench balance correction method for the high and medium pr...

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): G01M1/32
Inventor 李立波庄乾兴张俊成张修寰关英杰尚彦春
Owner HARBIN TURBINE
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