Lossless automatic flaw detection device for steel structure engineering

Abstract

The invention relates to the technical field of steel structure flaw detection, in particular to a nondestructive automatic flaw detection device for steel structure engineering, which comprises an annular electric slide rail, support wheels, a first connecting plate and the like, the whole annular electric sliding rail is formed by combining two semi-rings, and a plurality of supporting wheels are detachably connected to the annular electric sliding rail. A first connecting plate is slidably connected to the annular electric sliding rail. According to the device, a magnetic suspension is sprayed downwards through a spray head, so that the magnetic suspension is sprayed to the lower side area of a flaw detector, then a probe is electrified to generate magnetic force, the lower side area of the flaw detector is magnetized, nondestructive flaw detection operation is achieved, and then an annular electric sliding rail is controlled to drive a first connecting plate to rotate; and then the flaw detector is driven by the first connecting plate to rotate to the next undetected area, and then the steps are repeated until flaw detection of all areas is completed, so that flaw detection dead angles are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure flaw detection, and in particular to a non-destructive automatic flaw detection device for steel structure engineering. Background Art

[0002] The magnetic particle flaw detector is a commonly used metal flaw detection device. When in use, magnetic suspension is sprayed on the surface of the workpiece to be tested, and then the magnetic yoke is pressed against the workpiece to apply a magnetic field to it, so that a leakage magnetic field is generated at the defect to attract magnetic particles and form magnetic marks.

[0003] However, when using a magnetic particle flaw detector for flaw detection, the flaw detector needs to be held manually and then the magnetic suspension is sprayed on the flaw detection area. When flaw detection is performed on a workpiece installed on the equipment and close to the ground, such as flaw detection on a pipeline installed on the equipment, due to limited operating space, it is difficult for the operator to hold the flaw detector against the lower area of ​​the pipeline, and it is difficult to spray the magnetic suspension evenly on the area, and it is also inconvenient to directly visually observe the surface condition of such an area, resulting in poor flaw detection effect in the area. Moreover, when the operating space is limited, the operator's hands and flaw detector will obstruct the operator's line of sight, and the magnetic traces on the workpiece surface cannot be effectively observed, which is prone to missed detection and the quality of the workpiece cannot be guaranteed. Summary of the invention

[0004] In order to overcome the shortcomings of existing magnetic particle flaw detectors that are prone to missed detection when detecting flaws in pipelines installed on equipment due to limited operating space and the operator's hands and flaw detector obstructing the operator's line of sight, the present invention provides a non-destructive automatic flaw detection device for steel structure engineering.

[0005] The technical solution is: a non-destructive automatic flaw detection device for steel structure engineering, including an annular electric slide rail, a support wheel and a first connecting plate; the annular electric slide rail as a whole is composed of two semi-rings, and a plurality of support wheels are detachably connected to it; the first connecting plate is slidably connected to the annular electric slide rail; it also includes a flaw detector, a liquid spray plate, an air blowing plate, a fixed block and a camera; the first connecting plate is fixedly connected to the flaw detector through a connecting piece on the side facing the center of the annular electric slide rail; the flaw detector is connected to a liquid spray plate for spraying magnetic suspension liquid, a plurality of nozzles are arranged on the liquid spray plate, the liquid spray plate is provided with a liquid inlet pipe connected to an external liquid infusion pipeline, and an electromagnetic valve is arranged on the liquid inlet pipe; a blowing plate for blowing away the magnetic suspension liquid is detachably connected to the liquid spray plate, a plurality of air blowing ports are arranged on the air blowing plate, and the air inlet pipe connected to an external air pump is arranged; a fixed block is fixedly connected to the flaw detector, and the fixed block is arranged obliquely; a camera for photographing magnetic traces is fixedly connected to the fixed block.

[0006] As an improvement of the above scheme, it also includes a connecting tube and a semicircular baffle; the external cover of the camera is covered with a connecting tube; two semicircular baffles are connected to the connecting tube through an electric drive rotation structure, and the two semicircular baffles isolate and protect the camera inside the connecting tube when the two semicircular baffles are in a closed state.

[0007] As an improvement of the above solution, a shielding block is also included; the shielding block is fixedly connected to the fixing block.

[0008] As an improvement of the above solution, an electric push rod is fixedly connected to the first connecting plate; the output end of the electric push rod is fixedly connected to the flaw detector; and the connecting piece is a folding cover.

[0009] As an improvement of the above solution, an illumination lamp is arranged outside the connecting tube.

[0010] As an improvement of the above solution, the wheel surface on the supporting wheel is covered with a rubber layer.

[0011] As an improvement of the above solution, the side of the blowing plate facing the center of the annular electric slide rail is arranged in an arc shape.

[0012] As an improvement of the above solution, the surfaces of the semicircular blocking piece and the blocking block are coated with an anti-stick coating.

[0013] As an improvement of the above solution, it also includes a second connecting plate and a sponge plate; the second connecting plate is slidably connected to the annular electric slide rail; the second connecting plate is fixedly connected to the sponge plate through a connecting block.

[0014] As an improvement of the above solution, the sponge board is arc-shaped.

[0015] Beneficial effects: The present invention realizes that the magnetic suspension liquid is sprayed downwardly through the nozzle, so that the lower area of ​​the flaw detector is sprayed with the magnetic suspension liquid, and then the probe is energized to generate magnetic force, so as to magnetize the area under the flaw detector to realize non-destructive flaw detection operation, and then the annular electric slide rail is controlled to drive the first connecting plate to rotate, and then the flaw detector is driven to rotate to the next undetected area through the first connecting plate, and then the above steps are repeated until the flaw detection of all areas is completed, avoiding the occurrence of flaw detection blind spots; When the flaw detection position is on the side of the pipeline facing the ground, it is not convenient to observe, so the defect magnetic trace can be photographed by a camera and the image can be transmitted in real time to the control terminal held by the operator to avoid the defect being missed; When the nozzle sprays the magnetic suspension, the camera can be shielded by the connecting tube and the semicircular shielding piece to prevent the magnetic suspension from splashing onto the camera surface and blocking the camera's line of sight. When the flaw detector and its connected parts rotate to the lower side of the pipeline, when the camera performs the shooting function, the shielding block blocks and guides the magnetic suspension dripping downward to prevent the magnetic suspension from falling onto the camera surface, thereby effectively ensuring the normal operation of the camera. An annular electric slide rail with a smaller inner diameter and a support wheel installed on the outside can be used to realize flaw detection on the inside of the pipeline, which is conducive to improving the universality of the present invention. Moreover, synchronous flaw detection can be performed after the inner and outer flaw detectors are displaced by 180 degrees, while improving the flaw detection efficiency. When the pipeline contains holes, the inner sponge board is aligned with the outer flaw detector, and the outer sponge board is aligned with the inner flaw detector. The holes are blocked by the sponge board, and the magnetic suspension sprayed into the holes is adsorbed, thereby ensuring the normal progress of the flaw detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the non-destructive automatic flaw detection device for steel structure engineering of the present invention; Figure 2 A working state diagram of the flaw detector of the present invention performing flaw detection; Figure 3 It is a schematic diagram of the three-dimensional structure of the flaw detector, the liquid spray plate, the air blowing plate and the fixed block combination of the present invention; Figure 4 It is a schematic diagram of the combined structure of the flaw detector and the liquid spray plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the camera, the connecting tube, the semicircular baffle and the shielding block combined in the present invention; Figure 6 This is a working state diagram of the present invention for simultaneously detecting flaws on the inside and outside of a pipeline.

[0017] The numbers in the figure are as follows: 1-annular electric slide rail, 2-support wheel, 3-first connecting plate, 4-electric push rod, 5-flaw detector, 5001-probe, 6-liquid spray plate, 6001-spray head, 7-air blowing plate, 7001-air blowing port, 8-fixed block, 9-camera, 101-connecting tube, 102-semicircular baffle, 103-shielding block, 201-second connecting plate, 202-sponge plate. DETAILED DESCRIPTION

[0018] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0019] Example 1 A non-destructive automatic flaw detection device for steel structure engineering, such as Figure 1-Figure 5 As shown, it includes an annular electric slide rail 1, a support wheel 2 and a first connecting plate 3; the annular electric slide rail 1 is composed of two half rings, on which a plurality of support wheels 2 arranged in an annular array are detachably connected, and an electric drive structure is arranged at the wheel of the support wheel 2; the first connecting plate 3 is slidably connected to the annular electric slide rail 1; It also includes a flaw detector 5, a liquid spray plate 6, an air blowing plate 7, a fixed block 8 and a camera 9; the first connecting plate 3 is fixedly connected to the flaw detector 5 through a connecting piece on the side facing the center of the annular electric slide rail 1; the middle part of the flaw detector 5 is connected to the liquid spray plate 6, on which a plurality of nozzles 6001 are arranged, the liquid spray plate 6 is provided with a liquid inlet pipe connected to an external liquid infusion pipeline, and a solenoid valve is arranged on the liquid inlet pipe; the middle part of the liquid spray plate 6 is detachably connected to the air blowing plate 7, on which a plurality of inclined air blowing ports 7001 are arranged, and the air blowing plate 7 is provided with an air inlet pipe connected to an external air pump; the flaw detector 5 is fixedly connected to the fixed block 8, and the fixed block 8 is arranged inclined; the camera 9 is fixedly connected to the fixed block 8 on the side facing the center of the annular electric slide rail 1.

[0020] It also includes a connecting tube 101 and a semicircular baffle 102; the camera 9 is covered with the connecting tube 101 on the outside; the connecting tube 101 is connected to two semicircular baffles 102 through an electric drive rotation structure, and the two semicircular baffles 102 isolate and protect the camera 9 inside the connecting tube 101 when the two semicircular baffles 102 are in a closed state.

[0021] It also includes a shielding block 103 ; the shielding block 103 is fixedly connected to the fixing block 8 .

[0022] An electric push rod 4 is fixedly connected to the first connecting plate 3; an output end of the electric push rod 4 is fixedly connected to a flaw detector 5; and the connecting piece is a folding cover.

[0023] An illuminating lamp is arranged outside the connecting tube 101 to provide auxiliary lighting for the flaw detection area when the camera 9 takes a picture of the magnetic trace.

[0024] The wheel surface on the supporting wheel 2 is covered with a rubber layer to increase the friction between the roller and the pipeline.

[0025] The side of the blowing plate 7 facing the center of the annular electric slide rail 1 is arranged in an arc shape to adapt to the arc surface of the pipeline, thereby effectively enhancing the blowing effect of the blowing plate 7 on the magnetic suspension.

[0026] The surfaces of the semicircular baffle 102 and the shielding block 103 are coated with an anti-stick coating to prevent the magnetic suspension from continuously adhering to the surfaces of the semicircular baffle 102 and the shielding block 103 .

[0027] When working, Figure 2As shown, the annular electric slide rail 1 and the parts connected thereto are manually sleeved on the outside of the pipeline. At this time, the roller on the supporting wheel 2 abuts against the pipeline, and the flaw detector 5 is pushed downward by controlling the electric push rod 4 until the probe 5001 contacts the pipeline, and the flaw detector 5 is initially located at the free end of the pipeline that is not connected to the equipment. The electromagnetic valve connected to the liquid inlet pipe in the liquid spray plate 6 is controlled to open, so that the magnetic suspension is sprayed downward from the nozzle 6001, so that the area under the flaw detector 5 is sprayed with the magnetic suspension, and then the flaw detector 5 is started, and the probe 5001 is energized to generate magnetic force, thereby The area is magnetized, and the defective parts can absorb the magnetic powder in the magnetic suspension to produce magnetic traces, thereby realizing non-destructive flaw detection operation. Then the annular electric slide rail 1 is controlled to drive the first connecting plate 3 to rotate, and then the flaw detector 5 is driven to rotate to the next undetected area through the first connecting plate 3. Then the above steps are repeated, and the magnetic suspension is sprayed in the area and magnetized to make magnetic traces appear at the defects. After the flaw detector 5 rotates around the pipeline once, the support wheel 2 can be controlled to drive the annular electric slide rail 1 and the parts connected to it to move toward the direction close to the equipment. The above steps are repeated until the flaw detection of all areas is completed.

[0028] It should be noted that after the flaw detection of the area below the flaw detector 5 is completed, the electric push rod 4 is controlled to drive the flaw detector 5 to move upward, and the flaw detector 5 is driven to rotate to the next undetected area through the first connecting plate 3, and then the electric push rod 4 is controlled to push the flaw detector 5 downward to make the probe 5001 contact with the pipeline to avoid wear caused by continuous contact between the probe 5001 and the pipeline; the folding cover can isolate some raised dust and impurities from the electric push rod 4 to prevent dust and the like from entering the telescopic joint of the electric push rod 4.

[0029] It should be noted that when the flaw detection position is on the side of the pipeline facing the ground, it is not convenient to observe, so the defect magnetic traces can be photographed by the camera 9, and the image can be transmitted in real time to the control terminal held by the operator to avoid defects being missed. When the camera 9 takes a picture of the magnetic traces, the flaw detection area is auxiliary illuminated by the lighting lamp on the outside of the connecting tube 101.

[0030] Furthermore, when the nozzle 6001 sprays the magnetic suspension, the camera 9 can be protected and shielded by the connecting tube 101 and the semicircular baffle 102 to prevent the magnetic suspension from splashing onto the surface of the camera 9 and blocking the line of sight of the camera 9. When the spraying of the magnetic suspension is completed, the electric drive rotating structure at the connection between the semicircular baffle 102 and the connecting tube 101 can be controlled to drive the semicircular baffle 102 to rotate and open, so that the camera 9 can normally perform the photo recording work, such as Figure 5As shown, when the flaw detector 5 and its connected parts rotate to the lower side of the pipe, after the magnetic suspension is sprayed upward onto the pipe surface through the nozzle 6001, part of the magnetic suspension drips downward under the action of gravity. Therefore, when the camera 9 performs the shooting function, the shielding block 103 is used to block and guide the magnetic suspension dripping downward to prevent the magnetic suspension from falling onto the surface of the camera 9, thereby effectively ensuring that the camera 9 can operate normally.

[0031] It should be noted that during the magnetization process, part of the magnetic powder in the magnetic suspension is adsorbed on the defects to form magnetic traces, while other excess magnetic powder forms background magnetic powder, which interferes with the observation of the magnetic traces. Therefore, when magnetic traces are formed at the defects, the air pump can be controlled to blow air to the blowing plate 7, so that the magnetic suspension is slightly blown away from the equipment through the blowing port 7001 to blow away the excess magnetic powder, so as to facilitate the observation of the magnetic traces, and the magnetic powder will not be blown to the position that has not been detected, so as to avoid interfering with subsequent detection.

[0032] Example 2 On the basis of Example 1, Figure 2-Figure 6 As shown, it also includes a second connecting plate 201 and a sponge plate 202; the second connecting plate 201 is slidably connected to the annular electric slide rail 1; the second connecting plate 201 is fixedly connected to the sponge plate 202 through a connecting block.

[0033] The sponge board 202 is arc-shaped to adapt to the arc-shaped surface of the pipeline, effectively enhancing the cleaning effect of the arc-shaped sponge board 202.

[0034] Since the presence of impurities such as oil, dust, etc. on the pipeline surface will affect the adhesion of the magnetic suspension, before the pipeline is inspected by the flaw detector 5, the annular electric slide rail 1 is first controlled to drive the second connecting plate 201 to rotate around the pipeline, and the sponge plate 202 is driven to rotate by the second connecting plate 201, and then the pipeline surface is wiped and cleaned by the sponge plate 202.

[0035] Since the inner side of the pipeline also needs to be inspected, in this case, a circular electric slide rail 1 with a smaller inner diameter and a support wheel 2 installed on the outer side can be used. The circular electric slide rail 1 and the parts connected to it, such as Figure 6As shown, it is placed on the inside of the pipeline to realize flaw detection on the inside of the pipeline. When cleaning is required, the sponge plate 202 is adaptively deformed into a convex arc shape, which is beneficial to improving the universality of the present invention. Moreover, after the internal and external flaw detectors 5 are displaced by 180 degrees, synchronous flaw detection can be performed, while improving the flaw detection efficiency. Furthermore, for some pipelines with special shapes, such as mesh pipes, the walls of such pipelines have a large number of holes, and the magnetic suspension will pass through the holes to the other side of the pipeline, interfering with the cooperation between the flaw detector 5 on the other side and its own magnetic suspension. Therefore, in order to avoid that when the flaw detector 5 moves to the area containing holes for flaw detection, when the magnetic suspension is sprayed through the spray plate 6, part of the magnetic suspension will pass through the holes, affecting the flaw detection operation on the inside or outside of the pipeline, so that it can be as shown. Figure 6 As shown, by utilizing the sponge board 202 for cleaning, the inner sponge board 202 is aligned with the outer flaw detector 5, and the outer sponge board 202 is aligned with the inner flaw detector 5. The sponge board 202 is used to shield the holes, and the magnetic suspension sprayed into the holes is adsorbed, thereby ensuring the normal progress of the flaw detection operation.

[0036] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A non-destructive automatic flaw detection device for steel structure engineering, comprising an annular electric slide rail (1), a support wheel (2) and a first connecting plate (3); the annular electric slide rail (1) is composed of two half rings, and a plurality of support wheels (2) are detachably connected to the annular electric slide rail (1); the first connecting plate (3) is slidably connected to the annular electric slide rail (1); the characteristics are: The device also comprises a flaw detector (5), a liquid spray plate (6), an air blowing plate (7), a fixed block (8) and a camera (9); the flaw detector (5) is fixedly connected to the first connecting plate (3) on one side facing the center of the annular electric slide rail (1) through a connecting piece; the flaw detector (5) is connected to a liquid spray plate (6) for spraying magnetic suspension liquid, the liquid spray plate (6) is provided with a plurality of spray heads (6001), the liquid spray plate (6) is provided with a liquid inlet pipe connected to an external liquid delivery pipeline, and a solenoid valve is provided on the liquid inlet pipe; the liquid spray plate (6) is detachably connected to an air blowing plate (7) for blowing away the magnetic suspension liquid, the air blowing plate (7) is provided with a plurality of air blowing ports (7001), and the air blowing plate (7) is provided with an air inlet pipe connected to an external air pump; the flaw detector (5) is fixedly connected to a fixed block (8), the fixed block (8) being arranged in an inclined manner; and the fixed block (8) is fixedly connected to a camera (9) for photographing magnetic traces.

2. The non-destructive automatic flaw detection device for steel structure engineering according to claim 1 is characterized in that: It also includes a connecting tube (101) and a semicircular baffle (102); the camera (9) is externally covered with the connecting tube (101); the connecting tube (101) is connected to two semicircular baffles (102) via an electric drive rotation structure, and the two semicircular baffles (102) isolate and protect the camera (9) inside the connecting tube (101) when the two semicircular baffles (102) are in a closed state.

3. The non-destructive automatic flaw detection device for steel structure engineering according to claim 2 is characterized in that: It also includes a shielding block (103); the shielding block (103) is fixedly connected to the fixing block (8).

4. A non-destructive automatic flaw detection device for steel structure engineering according to any one of claims 1 to 3, characterized in that: An electric push rod (4) is fixedly connected to the first connecting plate (3); an output end of the electric push rod (4) is fixedly connected to a flaw detector (5); and the connecting piece is a folding cover.

5. The non-destructive automatic flaw detection device for steel structure engineering according to claim 2 is characterized in that: An illuminating lamp is arranged on the outside of the connecting tube (101).

6. The non-destructive automatic flaw detection device for steel structure engineering according to claim 1 is characterized in that: The wheel surface on the supporting wheel (2) is covered with a rubber layer.

7. The non-destructive automatic flaw detection device for steel structure engineering according to claim 1 is characterized in that: The side of the air blowing plate (7) facing the center of the annular electric slide rail (1) is arranged in an arc shape.

8. The non-destructive automatic flaw detection device for steel structure engineering according to claim 3 is characterized in that: The surfaces of the semicircular blocking piece (102) and the shielding block (103) are both coated with an anti-stick coating.

9. The non-destructive automatic flaw detection device for steel structure engineering according to claim 1 is characterized in that: It also comprises a second connecting plate (201) and a sponge plate (202); the second connecting plate (201) is slidably connected to the annular electric slide rail (1); and the second connecting plate (201) is fixedly connected to the sponge plate (202) via a connecting block.

10. The non-destructive automatic flaw detection device for steel structure engineering according to claim 9, characterized in that: The sponge plate (202) is arc-shaped.

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