Method capable of automatically adjusting rotation radius and measuring inner diameter and outer diameter of pipe end of steel pipe

A technology of automatic adjustment of the rotation radius, which is applied in the direction of measuring devices, instruments, and optical devices, etc., can solve the problems of high processing accuracy, inability to complete measurement, high cost, etc., achieve good compatibility, make up for the limited measurement range, reduce The effect of equipment cost

Inactive Publication Date: 2015-06-24
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Otherwise, the pipe wall will appear outside the measurement range of the laser ranging probe, invalid data will appear, and the measurement of the entire circumference cannot be completed
This requires a lot of machining accuracy of the alignment device, and the cost of implementation is very high

Method used

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  • Method capable of automatically adjusting rotation radius and measuring inner diameter and outer diameter of pipe end of steel pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The present invention is directed to a pipe end inner and outer diameter measuring device based on a rotating platform driving a laser ranging probe to rotate around the pipe end. The structure of this device is as follows: figure 1 shown.

[0019] exist figure 1 Among them, 1 is the turntable, 2 is the turntable table, 3 and 4 are the inner diameter distance measuring probe and the outer diameter distance measuring head respectively, 5 and 6 are the inner diameter probe fixing arm and the outer diameter probe used to fix the two probes respectively. The fixed arm, 7 is the steel pipe to be tested, and 8 is the rotation axis of the rotary table. The two laser ranging probes 3 and 4 are placed perpendicular to the pipe wall, and the distances between the probes and the inner and outer walls of the steel pipe are measured as A and B, respectively. The distances of the laser ranging probes (3 and 4) from the central axis (8) of the rotation of the turntable are C and D r...

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Abstract

Provided is a method capable of automatically adjusting a rotation radius and measuring an inner diameter and an outer diameter of a pipe end of a steel pipe. The method is a measuring method which aims at a measuring device for the inner diameter and the outer diameter of the pipe end, wherein laser ranging probes rotate around the pipe end. According to the measuring method, by using the mode that the rotation radius is automatically adjusted during the rotation measuring process, the defect that a laser triangulation method ranging probe is limited in the measuring range is compensated, the requirement for the aligning precision between a rotating central axis and a steel pipe central axis of a rotating platform is greatly lowered, a dynamic range capable of measuring changes on a pipe diameter is enlarged, the equipment cost of an auxiliary machine is lowered, and the stability and the practicality of equipment are improved. Meanwhile, during the operation, aiming at steel pipes with different sizes, the positions of probe fixed arms do not need to be adjusted in advance, the operation procedure is reduced, and the maintenance cost is lowered.

Description

technical field [0001] The invention relates to the field of steel pipe parameter measurement, in particular to a method for measuring the inner and outer diameters of steel pipe ends with automatic adjustment of the rotation radius. Background technique [0002] The inner diameter, outer diameter, wall thickness and out-of-roundness of large-diameter steel pipe ends are important parameters for the performance of steel pipes, and are of great significance in ensuring the progress and quality of pipeline construction. In the production process, it is very important to measure these parameters online. Unqualified steel pipes can be screened out in time, and reworked and processed to ensure product quality. The out-of-roundness of pipe ends can also be classified into high-end steel pipes with small deviation and low-end products with large deviation to meet the needs of different users. [0003] At present, when measuring the inner and outer diameter, thickness and out-of-ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08G01B11/12
Inventor 叶青梅剑春田建国
Owner NANKAI UNIV
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