Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flange conicity correction method after welding between tower drum and flange

A flange welding and tower technology is applied in the field of flange taper correction after tower flange welding. Production cost and effect of improving correction efficiency

Active Publication Date: 2016-08-31
FUJIAN FUCHUAN YIFAN NEW ENERGY EQUIP MFG CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the taper of the flange can also be corrected, the accuracy of the correction is difficult to grasp, and often requires multiple pyrotechnic corrections to meet the corresponding taper requirements, resulting in prolonged production time and increased production costs.

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

Embodiment 1

[0017] A method for correcting the taper of a flange after the flange of a tower is welded, the specific correcting steps are as follows:

[0018] After cooling the welding position between the tower flange and the wind power tower (in this example, the wall thickness of the tower is 40mm), use the Easy Laser laser measuring instrument to measure the taper of the flange; according to the measurement report of the flange leveling instrument, the Mark the arc section where the measured value is out of tolerance, and then use a baking gun to carry out flame correction in the heating zone corresponding to the marked position. The temperature of the flame correction is 640 °C, and the heating zone is from the centerline of the weld seam to the cylinder In the area of ​​the fusion line of the side weld, the arc length of the corresponding flame correction should be consistent with the length of the out-of-tolerance arc section of the flange. It is forbidden to heat the flange on the ...

Embodiment 2

[0027] A method for correcting the taper of a flange after the flange of a tower is welded, the specific correcting steps are as follows:

[0028] After cooling the welding position between the tower flange and the wind power tower (in this example, the wall thickness of the tower is 25mm), measure the taper of the flange with the Easy Laser laser measuring instrument; according to the measurement report of the flange leveling instrument, the Make a mark on the arc section where the measured value is out of tolerance, and then use a baking gun to carry out flame correction in the heating zone corresponding to the marked position. The temperature of the flame correction is 620°C, and the heating zone is from the centerline of the weld seam to the cylinder body In the area of ​​the fusion line of the side weld, the arc length of the corresponding flame correction should be consistent with the length of the out-of-tolerance arc section of the flange. It is forbidden to heat the fl...

Embodiment 3

[0037] A method for correcting the taper of a flange after the flange of a tower is welded, the specific correcting steps are as follows:

[0038] After cooling the welding position between the tower flange and the wind power tower (in this example, the wall thickness of the tower is 15mm), use the Easy Laser laser measuring instrument to measure the taper of the flange; according to the measurement report of the flange leveling instrument, the Make a mark on the arc section where the measured value is out of tolerance, and then use a baking gun to carry out flame correction in the heating zone corresponding to the marked position. The temperature of the flame correction is 600°C, and the heating zone is from the centerline of the weld seam to the cylinder body In the area of ​​the fusion line of the side weld, the arc length of the corresponding flame correction should be consistent with the length of the out-of-tolerance arc section of the flange. It is forbidden to heat 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

The invention discloses a flange conicity correction method after welding between a tower drum and a flange. The correction method comprises following steps: utilizing an Easy Laser laser measuring instrument to measure flange conicity after cooling welding positions of the tower drum, the flange and a wind electricity tower drum; labeling an arc section with flange measurement value out of tolerance based on the measurement report of a flange leveling instrument and utilizing a baking gun to perform flame straightening operation in a heating zone corresponding to a labeling position with the temperature for flame straightening being 600-650 DEG C, wherein the heating zone is the one from a weld center line to a side weld fusion line of a drum bottom, the arc length of flame straightening is the same with that of out-of-tolerance for the flange, and the flange is prevented from being heated on the flange side or prevented from being directly heated. The flange conicity correction method after welding between the tower drum and the flange has following beneficial effects: clear requirements are brought forward for flame properties and distance between flame and a workpiece; parameters of different kinds of fireworks are set; and according to the correction method, flange conicity can be corrected once so that the flange conicity can meet the demand for production.

Description

technical field [0001] The invention relates to a correction method, in particular to a method for correcting the taper of a flange after a tower flange is welded. Background technique [0002] In recent years, in order to achieve sustainable development and use of green energy, wind power has been widely used. As the infrastructure of wind power generation, the tower tube must strictly control the welding deformation during the welding process with the flange, and the flange is required to be inclined inside and flat outside. At present, after the welding of the tower and the flange is completed, after the welding position is cooled, it is necessary to use corresponding instruments and equipment to measure the taper of the flange, and then perform pyrotechnic correction on the position where the measured value is out of tolerance. In the usual pyrotechnic straightening process, there are clear requirements for the flame straightening temperature of the flange taper, but th...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00
CPCB23K37/00
Inventor 王磊沈伟吴斌勇
Owner FUJIAN FUCHUAN YIFAN NEW ENERGY EQUIP MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com