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Large component assembling and welding deformation auto-real-time monitoring method

A technology for welding deformation and large components, applied in measuring devices, optical devices, instruments, etc., can solve the problems of low degree of automation, manual measurement of deformation, insufficient measuring range, etc., and achieve the effect of improving work efficiency and measuring speed.

Inactive Publication Date: 2007-04-18
SHANGHAI BOILER WORKS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Generally, manual measurement of deformation is required, with low degree of automation and poor real-time performance;
[0007] 2. The range of monitoring deformation is very small. If large deformation monitoring is carried out on large components, the range will appear to be insufficient;
[0008] 3. Due to the preheating and the temperature between the welding layers is as high as 300°C during welding, it cannot be measured at high temperature;
[0009] 4. Only one-dimensional, two-dimensional or three-dimensional displacement monitoring can be carried out, but the posture of deformable objects cannot be monitored

Method used

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  • Large component assembling and welding deformation auto-real-time monitoring method
  • Large component assembling and welding deformation auto-real-time monitoring method
  • Large component assembling and welding deformation auto-real-time monitoring method

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Embodiment

[0060] The pressure vessel of the key equipment of the coal gasification unit of the coal substitution project - the gas return chamber

[0061] As shown in Figure 1, it is a schematic diagram of the structure of the gas return chamber. The gas return chamber is composed of an inclined cylinder 1 and a main cylinder 2, with a total weight of about 184 tons. The diameter of the inclined cylinder 1 is φ2440mm, and the height is 3718mm. The main cylinder 2 The diameter is φ3820mm, the height is 9700mm, and the maximum thickness of the cylinder wall is 285mm. It is required that the deviation of the angle between the axis of the main cylinder 2 and the oblique cylinder 1 after welding is ±0.1°, and the two lines must be in the same plane; the focus of the axis is to each end surface The deviation value is ±1mm. It is necessary to ensure that all parameters after installation and welding meet the technical requirements to ensure the smooth progress of the next process.

[0062] In ...

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Abstract

The invention relates to large scale component assembling and welding deformations automatic real time monitoring method. Its feature is that it uses coordinate system as measuring basis expressed by axes and generatrix in whole measuring system. The method includes the following steps: establishing the coordinate system for the whole deformation measuring basis; setting measuring point at the outer wall of the component 1 and 2; measuring the coordinate for all the measuring points; processing component 1 and 2 installing measuring and welding deformation monitoring. The invention has the advantages of realizing the monitoring without setting fixed measuring installation onsite and special tool set up, fast measuring speed, high working efficiency means three minutes per period.

Description

technical field [0001] The invention relates to a method for automatic real-time monitoring of large component assembly and welding deformation, which can be applied to automatic monitoring of welding deformation and component installation stage to guide component installation to the designed position and posture, which belongs to measurement [0002] technology field. Background technique [0003] In the assembly process of large components with high precision, the measurement method of optical centering is generally used to meet the installation accuracy requirements. Optical centering requires the production of central tooling and the establishment of central axis segmented installation to meet the accuracy requirements. The production and installation center Tooling will inevitably increase the cost, and this method can only meet the assembly of straight line components, and it is powerless for the assembly and positioning of components with angles and complex geometric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/04G01B21/32G01B11/03G01B11/16
Inventor 江燕云黄建华陈继华
Owner SHANGHAI BOILER WORKS
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