CN213302086U - Magnetic powder automatic inspection device for microcracks of pipe end groove - Google Patents

Abstract

The utility model relates to a magnetic automatic check device of pipe end slide way crack belongs to material tissue inspection equipment field. Comprises a magnetic powder flaw detector and an automatic spray gun; the rolling support is arranged at the top end of the rolling support, is connected with the roller motor and is driven to rotate by the roller motor; in the magnetic powder flaw detector, a magnetic powder probe is connected with a host through a connecting cable; the magnetic powder probe and the automatic spray gun are both arranged on the movable trolley through a bracket, the magnetic powder probe and the automatic spray gun are opposite and arranged at intervals, and the movable trolley is connected with the trolley motor and driven by the trolley motor. The equipment not only improves the detection work efficiency and reduces the detection cost of enterprises, but also meets the specified standard requirements and realizes the automation of nondestructive detection of magnetic powder.

Description

Magnetic powder automatic inspection device for microcracks of pipe end groove

Technical Field

The utility model belongs to material tissue inspection equipment field, concretely relates to magnetic automatic checkout device of pipe end groove microcrack for wind power generation.

Background

For a large-sized pipe, magnetic powder nondestructive testing is carried out on an end groove of the large-sized pipe to detect whether microcracks exist at the groove. The current inspection process can be briefly described as the following three steps: firstly, an inspector is required to manually spray magnetic powder on a sample end groove; then, carrying out circumferential detection along the pipe end by an inspector holding the magnetic particle flaw detector; finally, the sample groove was visually observed for the presence or absence of microcracks.

The existing inspection process has the following disadvantages:

(1) the magnetic powder on the bevel of the end of the sample is inevitably and unevenly distributed by manually spraying the magnetic powder.

(2) When the magnetic particle flaw detector is used for detecting along the circumferential direction, the manual operation easily causes overlarge or undersize displacement of magnetic particle flaw detection, so that the running track is not uniform.

(3) The skill level of each inspector is inconsistent; repeated detection for a long time is easy to cause visual fatigue, and the missed detection of crack defects can be caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a magnetic automatic inspection device of pipe end groove microcrack to solve the not enough problem that current testing process exists, thereby provide reliable high-quality tubular product for subsequent weldment work.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a magnetic powder automatic inspection device for pipe end slope microcracks comprises a magnetic powder flaw detector and an automatic spray gun; the rolling support is arranged at the top end of the rolling support, is connected with the roller motor and is driven to rotate by the roller motor; in the magnetic powder flaw detector, a magnetic powder probe is connected with a host through a connecting cable; the magnetic powder probe and the automatic spray gun are both arranged on the movable trolley through a bracket, the magnetic powder probe and the automatic spray gun are opposite and arranged at intervals, and the movable trolley is connected with the trolley motor and driven by the trolley motor.

Furthermore, the rolling supports are at least four groups, and the rolling supports are arranged in a pairwise opposite mode.

Furthermore, a wet magnetic powder bottle is installed on the automatic spray gun, and the automatic spray gun is connected with an air compressor through a magnetic powder injection boosting pipeline.

Further, a sensor is arranged on the rolling support and is connected with the automatic spray gun through a connecting cable.

Further, the magnetic powder probe is arranged on the vertical rod of the movable trolley through a linear bracket, and the automatic spray gun is arranged on the vertical rod of the movable trolley through an L-shaped bracket.

Further, the system also comprises a scanner, and the scanner is connected with the display through a transmission cable.

The beneficial effects of the utility model reside in that:

the automatic spray gun replaces manual magnetic powder injection, and the injection is more uniform; the pipe rotates at a constant speed through the rolling support, and no position is omitted in the circumferential direction; the scanner replaces the eyes of people to carry out crack observation and inspection, and is more accurate. The equipment not only improves the detection work efficiency and reduces the detection cost of enterprises, but also meets the specified standard requirements and realizes the automation of nondestructive detection of magnetic powder.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural diagram of the present invention.

Reference numerals:

the device comprises a magnetic powder flaw detector 1, an automatic spray gun 2, a rolling support 3, a roller motor 4, a support 5, a moving trolley 6, a trolley motor 7, a bevel pipe 8, a wet magnetic powder bottle 9, a magnetic powder injection boosting pipeline 10, an air compressor 11, an inductor 12, a scanner 13, a transmission cable 14 and a display 15; a roller 301; a magnetic powder probe 101, a connecting cable 102 and a host machine 103; a linear bracket 501 and an L-shaped bracket 502; a vertical rod 601.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1, a magnetic powder automatic inspection apparatus for micro cracks on a pipe end slope comprises a magnetic powder flaw detector 1 and an automatic spray gun 2; the rolling device also comprises a rolling bracket 3, wherein the top end of the rolling bracket 3 is provided with a roller 301 which is connected with a roller motor 4 and is driven by the roller motor 4 to rotate; in the magnetic particle flaw detector 1, a magnetic particle probe 101 is connected with a host machine 103 through a connecting cable 102; the magnetic powder probe 101 and the automatic spray gun 2 are both arranged on the movable trolley 6 through the bracket 5, the magnetic powder probe 101 is opposite to the automatic spray gun 2 and arranged at intervals, and the movable trolley 6 is connected with the trolley motor 7 and driven by the trolley motor 7.

Specifically, the rolling supports 3 are at least four groups of support frames for supporting the bevel pipes 8, and the support frames are arranged in pairs in an opposite manner. Under the drive of the roller motor 4, the rollers 301 on the rolling support 3 rotate, and the groove pipes 8 supported above the rollers are driven by the rollers 301 to do uniform circumferential motion.

The magnetic particle flaw detector is an existing device and comprises a magnetizing transformer, a host machine 103, a magnetic particle probe 101 and a connecting cable 102. The magnetic powder probe 101 is connected with the host machine 103 through the connecting cable 102, the magnetic powder probe 101 can be used for carrying out automatic contact inspection on end groove cracks of the groove pipe 8, and returning sound waves are transmitted to the host machine 103 through the connecting cable 102 and are converted into electric pulse signals. The automatic spray gun 2 is provided with a wet magnetic powder bottle 9, and the automatic spray gun 2 is connected with an air compressor 11 through a magnetic powder injection boosting pipeline 10. The wet magnetic powder bottle 9 is filled with magnetic powder, the air compressor 11 is used for providing power for magnetic powder conveying, and under the boosting action of the magnetic powder injection boosting pipeline 10, the magnetic powder is automatically injected to the bevel of the end of the pipe.

The magnetic powder probe 101 in the scheme is installed on the vertical rod 601 of the movable trolley 6 through the linear support 501, and the automatic spray gun 2 is installed on the vertical rod 601 of the movable trolley 6 through the L-shaped support 502. The end of the magnetic powder probe 101 faces the outer wall of the bevel pipe 8, and the automatic spray gun 2 is positioned on the inner wall of the bevel pipe 8, and the two are matched with each other. Under the drive of the trolley motor 7, the movable trolley 6 can move, and the relative position of the magnetic powder probe 101 and the automatic spray gun 2 can be adjusted.

In the scheme, the rolling support 3 is provided with the inductor 12, and the inductor 12 is connected with the automatic spray gun 2 through a connecting cable. Because the roller 301 on the rolling support 3 rotates under the action of the roller motor 4, the automatic spray gun 2 automatically sprays magnetic powder for the end of the rotary beveled pipe 8, and when the roller 301 stops rotating, the inductor 12 transmits a signal for the automatic spray gun 2, namely, the signal for forbidding the movement of the beveled pipe 8 is transmitted to the automatic spray gun, so as to inductively control the start and stop of magnetic powder spraying.

Preferably, a scanner 13 is further included, the scanner 13 being connected to a display 15 via a transmission cable 14. The (diffusion type) scanner is used for observing the microcracks of the notch pipe 8 on line, and when the (diffusion type) scanner detects the microcracks, the cracks are automatically transmitted to the display 15 through the transmission cable 14 so as to display the microcrack defects in real time.

The working process of the scheme is as follows:

1. the bevel pipe 8 is transferred and placed on the rolling support 3 with the roller 301 through the electric hoist crane, at the moment, the movable trolley 6 stops running for 5mm along the pipe end, the magnetic powder probe 101 on the movable trolley 6 lightly contacts the outer wall surface of the pipe end of the bevel pipe 8, and then the bevel pipe 8 rolls to perform weekly uniform motion. The method specifically comprises the following steps: the roller motor 4 drives the roller 301 to rotate, and the roller 301 rotates to drive the bevel pipe 8 to rotate. The magnetic powder is automatically sprayed to the groove at the end of the groove pipe 8 through the automatic spray gun 2, so that the magnetic powder is uniformly distributed on the surface of the groove at the pipe end. The automatic spray gun 2 is controlled by the inductor 12, the spray gun automatically sprays magnetic powder as long as the slope pipe 8 rotates, the slope pipe 8 rotates at a constant speed for a circle, and the spray gun automatically stops spraying magnetic powder as long as the slope pipe 8 stops rotating.

2. And the magnetic particle flaw detector also synchronously and automatically detects the end bevel of the bevel pipe 8 along with the bevel pipe 8 rolling to make a round uniform motion. The magnetic powder probe 101 is contacted with the outer wall surface of the end of the pipe, and the magnetic conductivity difference between the magnetic conductivity of the surface of the product and the magnetic conductivity of the near-surface defects (such as cracks, slag inclusion, hairlines and the like) and the magnetic conductivity of steel is utilized, so that the magnetic field at the discontinuous parts of the magnetized materials is distorted, a leakage magnetic field is generated on the surface of a workpiece at the part where the magnetic flux leaks, the magnetic powder is attracted, the magnetic powder accumulation-magnetic marks at the defect parts are formed, the defect positions and the shapes are shown under the proper illumination condition, and the accumulation of the magnetic powder is observed and explained, so that the.

3. The diffusion scanner automatically observes and inspects the pipe, performs focusing diffusion scanning on the pipe end slope, and transmits the defects to the display 15 through the transmission cable 14 to record information when microcracks are detected.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (6)

1. A magnetic powder automatic inspection device for pipe end slope microcracks comprises a magnetic powder flaw detector and an automatic spray gun; the method is characterized in that: the rolling support is arranged at the top end of the rolling support, is connected with the roller motor and is driven to rotate by the roller motor; in the magnetic powder flaw detector, a magnetic powder probe is connected with a host through a connecting cable; the magnetic powder probe and the automatic spray gun are both arranged on the movable trolley through a bracket, the magnetic powder probe and the automatic spray gun are opposite and arranged at intervals, and the movable trolley is connected with the trolley motor and driven by the trolley motor.

2. The automatic magnetic powder inspection device for the microcracks of the pipe end groove according to claim 1, which is characterized in that: the rolling supports are at least four groups, and the rolling supports are arranged in a pairwise opposite mode.

3. The automatic magnetic powder inspection device for the microcracks of the pipe end groove according to claim 1, which is characterized in that: the automatic spray gun is provided with a wet magnetic powder bottle and is connected with an air compressor through a magnetic powder injection boosting pipeline.

4. The automatic magnetic powder inspection device for pipe end groove microcracks according to claim 3, characterized in that: the rolling support is provided with a sensor, and the sensor is connected with the automatic spray gun through a connecting cable.

5. The automatic magnetic powder inspection device for the microcracks of the pipe end groove according to claim 1, which is characterized in that: the magnetic powder probe is arranged on the vertical rod of the movable trolley through a linear bracket, and the automatic spray gun is arranged on the vertical rod of the movable trolley through an L-shaped bracket.

6. The automatic magnetic powder inspection device for the microcracks of the pipe end groove according to claim 1, which is characterized in that: the display device also comprises a scanner, and the scanner is connected with the display through a transmission cable.

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