Multi-point continuous electromagnetic thickness measuring device for metal pipe

Abstract

A metal pipe multi-point continuous electromagnetic thickness measuring device relates to the metal pipe wall thickness measuring technology and comprises a supporting sleeve and rollers used for driving the supporting sleeve to walk, and an electromagnetic thickness gauge is installed on the supporting sleeve. The axis of the roller is not overlapped with or perpendicular to the axis of the to-be-detected pipeline, so that the walking path of the roller on the surface of the to-be-detected pipeline is in the shape of a spiral line. According to the utility model, the advancing direction of the roller is inclined relative to the axis of the pipeline to be measured, so that the advancing tracks of the roller and the electromagnetic thickness gauge on the surface of the pipeline to be measured are changed into spiral lines, so that the measuring points are uniformly distributed on the outer side of the pipeline to be measured, and the pitch of the spiral lines can be changed by adjusting the inclination angle of the roller. And the density of the measurement points is increased. Therefore, by changing the uniformity and the density of the measurement points, the accuracy of the measurement of the overall thickness of the pipeline can be effectively improved, and the comprehensive evaluation of the thickness of the pipeline can be formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal pipe wall thickness measurement technology, especially a kind of metal pipe multi-point continuous electromagnetic thickness measuring device, it is applicable to the on-line monitoring and maintenance of metal pipeline in petroleum, chemical industry, metallurgy and other industries. BACKGROUND

[0002] In industrial production, the wall thickness of metal pipeline is an important parameter affecting its safety and service life. The traditional thickness measurement method is mostly single-point measurement, which cannot monitor the overall state of the pipeline in real time, and the measurement accuracy and reliability are limited due to environmental factors and different pipeline materials during pipeline operation.

[0003] The utility model with patent No. 202420638257.9 discloses a pressure pipeline wall thickness measuring device, which effectively solves the problems existing in the traditional thickness measurement method. However, in the wall thickness measuring device, the advancing direction of the driving wheel and the driven wheel is consistent with the axis direction of the measured pipeline, and the route walked by each thickness gauge is a straight line. The measurement points of wall thickness are all completely concentrated on several straight lines, ignoring the remaining part of the pipeline, which makes the overall evaluation of the pipeline wall thickness not accurate enough and needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of metal pipe multi-point continuous electromagnetic thickness measuring device, the purpose is to realize the high-precision, real-time monitoring of metal pipeline wall thickness without affecting the normal operation of pipeline, and improve the accuracy of overall evaluation of pipeline wall thickness.

[0005] The technical problem solved by the utility model is realized by the following technical scheme: the utility model provides a kind of metal pipe multi-point continuous electromagnetic thickness measuring device, including support sleeve and the roller for driving support sleeve to walk, electromagnetic thickness gauge is installed on support sleeve;

[0006] The axis of the roller does not coincide with the axis of the pipeline to be measured, and is not perpendicular, so that the shape of the walking path of the roller on the surface of the pipeline to be measured is a spiral line.

[0007] As a preferred scheme, the roller is installed on a support, which can slide along the radial direction of the pipeline to be measured and can be locked after sliding.

[0008] As a preferred scheme, the outer side of the support sleeve is provided with a circular arc slide, and the electromagnetic thickness gauge can slide along the circular arc slide to adjust the circumferential position of the electromagnetic thickness gauge, and the number of electromagnetic thickness gauges can be easily increased or decreased.

[0009] As a preferred scheme, an independent data acquisition module and a wireless transmission module are provided on each electromagnetic thickness gauge.

[0010] The utility model discloses the beneficial effect is:

[0011] 1, the utility model discloses the advancing direction of gyro wheel is made with the axis of the pipeline to be measured and is inclined, make gyro wheel and electromagnetic thickness gauge the advancing track on the surface of the pipeline to be measured become spiral line, to make the measuring point even distribution on the outside of the pipeline to be measured, and can change the pitch of spiral line by adjusting the inclination angle of gyro wheel, and then increase the density of measuring point.

[0012] 2, by making the support of gyro wheel move radially on the support cover, so that the utility model discloses can adapt to the pipeline of different diameters.

[0013] 3, electromagnetic thickness gauge is installed on the outside of the support cover arc slide, to realize its circumferential position adjustment on the support cover, to adapt to different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model.

[0015] Figure 2 It is the left view of the utility model.

[0016] Fig. in: 1, the pipeline to be measured;2, support cover;3, support;4, gyro wheel;5, electromagnetic thickness gauge. DETAILED DESCRIPTION

[0017] The utility model is further described below in connection with the drawings.

[0018] As Figure 1 , 2 The embodiment includes support cover 2 and gyro wheel 4 for driving support cover 2 to walk, and electromagnetic thickness gauge 5 is installed on support cover 2, as shown in the figure. When using, make support cover 2 and electromagnetic thickness gauge 5 walk on the outside of the pipeline to be measured 1 actively or passively through gyro wheel 4, realize the thickness measurement of different point position. The above is the technology that has existed in prior art, and will not be repeated here.

[0019] As Figure 1 , 2As shown, the axis of the roller 4 is not coincident with the axis of the pipeline 1 to be measured, nor is it perpendicular, in other words, the angle between the axis of the roller 4 and the axis of the pipeline 1 to be measured is an acute angle, so that the roller 4 is in the shape of a spiral line in the walking path of the surface of the pipeline 1 to be measured (i.e. one side axial movement, one side circumferential rotation). The utility model discloses a roller 4 advancing direction and the axis of the pipeline 1 to be measured are inclined, so that the roller 4 and the electromagnetic thickness gauge 5 are in the spiral line of the advancing track on the surface of the pipeline 1 to be measured, so that the measurement point is uniformly distributed on the outside of the pipeline 1 to be measured, and the pitch of the spiral line can be changed by adjusting the inclination angle of the roller 4, thereby increasing the density of the measurement point. Therefore, the utility model can effectively improve the accuracy of the overall thickness measurement of the pipeline by changing the uniformity and density of the measurement point, and can form a comprehensive evaluation of the thickness of the pipeline.

[0020] As shown in the drawings, Figure 1 , 2 The roller 4 is installed on a support 3, the support 3 is in sliding fit with the support sleeve 2, the support 3 can slide along the radial direction of the pipeline 1 to be measured, and can be locked after sliding to adapt to different diameters of the pipeline 1 to be measured. The locking mode can adopt all conventional technologies such as top wire locking, which will not be repeated here.

[0021] In addition, in specific implementation, after the diameter of the pipeline 1 to be measured changes, in order to make the electromagnetic thickness gauge 5 and the pipeline 1 to be measured still maintain the best spacing, the mounting structure of the electromagnetic thickness gauge 5 can also be designed as a structure capable of radial sliding.

[0022] As shown in the drawings, Figure 1 The outer side of the support sleeve 2 is provided with a circular arc slide, and the electromagnetic thickness gauge 5 can slide along the circular arc slide, so as to adjust the circumferential position of the electromagnetic thickness gauge 5, and at the same time, the number of electromagnetic thickness gauges 5 can be increased or decreased to adapt to different working conditions.

[0023] In the embodiment, an independent data acquisition module and a wireless transmission module are arranged on each electromagnetic thickness gauge 5, so that each electromagnetic thickness gauge can independently acquire and transmit data.

Claims

1. A kind of metal pipe multi-point continuous electromagnetic thickness measuring device, including support sleeve (2) and be used to drive the roller (4) of support sleeve (2) walking, electromagnetic thickness gauge (5) is installed on support sleeve (2), it is characterized in that: The axis of the roller (4) does not coincide with the axis of the pipe (1) to be measured, nor is perpendicular, so that the roller (4) in the shape of the walking path of the surface of the pipe (1) to be measured is helix.

2. The metal pipe multi-point continuous electromagnetic thickness measuring device according to claim 1, characterized in that: The roller (4) is installed on a support (3), which can slide along the radial direction of the pipe (1) to be measured and can be locked after sliding.

3. The metal tube multi-point continuous electromagnetic thickness measuring device according to claim 1, characterized in that: The outer side of the support sleeve (2) is provided with a circular arc slide, and the electromagnetic thickness gauge (5) can slide along the circular arc slide to adjust the circumferential position of the electromagnetic thickness gauge (5), and it is convenient to increase or decrease the number of electromagnetic thickness gauges (5).

4. The metal tube multi-point continuous electromagnetic thickness measuring device according to claim 1, characterized in that: Each electromagnetic thickness gauge (5) is provided with an independent data acquisition module and a wireless transmission module.

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