Magnetic flux leakage flaw detector for tank bottom of storage tank

Abstract

The utility model discloses a storage tank bottom magnetic flux leakage flaw detection instrument which comprises a frame, driving shafts are rotatably connected to the front side and the rear side of the frame, a rotating shaft is rotatably connected to one end of the frame, a driving motor is fixedly installed at the other end in the frame, a battery bin is fixedly installed at the top of the frame, and the battery bin is fixedly installed at the bottom of the frame. A control box located on one side of the battery bin is fixedly installed at the top of the frame, a detector probe is fixedly arranged at the bottom of the battery bin, a roller located outside the frame is fixedly installed at one end of the driving shaft, and a synchronous wheel located inside the frame is fixedly installed on the driving shaft. The two synchronous wheels located on the same side are in transmission connection through a synchronous belt, and the output end of the driving motor and the other end of one driving shaft are fixedly installed. And when the frame moves and is detected, the rotating brush cleans the tank bottom in front of the moving path of the frame, so that the detection result of the detector probe on the tank bottom is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of storage tank detection, in particular to a storage tank bottom magnetic leakage detection instrument. Background Art

[0002] The Magnetic Flux Leakage (MFL) flaw detector for oil and gas tank bottoms is specifically designed for bottom plate corrosion inspection on above-ground cylindrical welded steel tanks. It utilizes the MFL method, which involves exciting the steel plate to a critical saturation state. Corrosion on the upper and lower surfaces of the plate causes changes in the MFL field, which are then detected using magnetic sensors to determine the extent of corrosion. MFL is currently a leading international method. Compared to ultrasonic testing, it offers advantages such as high sampling density, zero leaks, high detection efficiency, low surface cleanliness requirements, and the absence of coupling agents. The system boasts strong corrosion detection capabilities, accurately determining the location and size of defects. These features enhance operator convenience and significantly improve detection efficiency.

[0003] After the tank is processed, there is usually waste residue inside the tank. When the magnetic flux leakage detector is performing flaw detection, larger impurities will affect the detection results.

[0004] Therefore, we propose a tank bottom magnetic leakage detector. Utility Model Content

[0005] The purpose of the utility model is to provide a tank bottom magnetic leakage detector to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tank bottom magnetic leakage flaw detector, comprising a frame, wherein the front and rear sides of the frame are rotatably connected to a drive shaft, one end of the frame is rotatably connected to a rotating shaft, the other end inside the frame is fixedly mounted with a drive motor, a battery compartment is fixedly mounted on the top of the frame, a control box located on one side of the battery compartment is fixedly mounted on the top of the frame, a detector probe is fixedly provided at the bottom of the battery compartment, a roller located outside the frame is fixedly mounted on one end of the drive shaft, a synchronous wheel located inside the frame is fixedly mounted on the drive shaft, and two positions are fixedly mounted on the frame. The synchronous wheels on the same side are connected through a synchronous belt transmission, the output end of the drive motor is fixedly mounted on the other end of a drive shaft, the other end of the other drive shaft on the same side is fixedly mounted with a second bevel gear, one end of the rotating shaft located inside the frame is fixedly mounted with a first bevel gear, the other end of the rotating shaft is fixedly mounted with a driving roller located outside the frame, and the other rotating shaft is fixedly mounted with a follower roller located outside the frame, the first bevel gear is meshed with the second bevel gear, the driving roller and the follower roller are connected through a transmission belt, and a brush is provided on the outer peripheral surface of the transmission belt.

[0007] Optionally, a bracket wrapped around the outside of the control box is fixedly installed on the top of the frame, and a push handle is provided on the top of the frame, and the bottom of the push handle is fixedly installed on the top of the bracket.

[0008] Optionally, two drive motors are fixedly mounted on the other end of the interior of the frame, and the two drive motors are fixedly mounted on drive shafts symmetrically arranged on both sides of the frame.

[0009] Optionally, the two sets of synchronous wheels and synchronous belts are symmetrically arranged on the front and rear sides of the vehicle frame, and the detector probe is located between the two synchronous belts.

[0010] Optionally, the two rotating shafts are symmetrically arranged at one end of the frame, and the driving roller and the driven roller have the same size.

[0011] Optionally, a battery is provided inside the battery compartment, and a controller is provided in the middle of the push handle and is located above the battery compartment.

[0012] Optionally, an electric push rod is fixedly mounted on the bottom of the battery compartment, and the bottom of the electric push rod is fixedly mounted on the top of the detector probe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The tank bottom magnetic leakage flaw detector is provided with a brush. When the driving motor drives the driving shaft and the roller to rotate, the second bevel gear rotates, and the connecting shaft is driven to rotate through the first bevel gear, thereby rotating the active roller, which drives the transmission belt to rotate, and further rotates the brush. When the frame moves and performs inspection, the rotating brush cleans the tank bottom in front of the frame's moving path to prevent affecting the inspection result of the detector probe on the tank bottom.

[0015] The tank bottom magnetic leakage flaw detector is equipped with two drive motors. The two drive motors respectively drive the drive shafts and rollers on the front and rear sides of the frame through two sets of synchronous wheels and synchronous belts to drive the frame and the detector probe to move. When the speeds of the two drive motors are different, the rotation speeds of the rollers on both sides of the frame are different, thereby causing the frame to turn. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a storage tank bottom magnetic leakage flaw detector according to the utility model;

[0017] Figure 2 This is a structural schematic diagram of a frame of a storage tank bottom magnetic leakage flaw detector according to the present invention;

[0018] Figure 3This is a schematic structural diagram of a rotating shaft of a storage tank bottom magnetic leakage flaw detector according to the present invention;

[0019] Figure 4 The utility model is a structural schematic diagram of a battery compartment of a storage tank bottom magnetic leakage flaw detector.

[0020] In the figure: 1. Frame; 2. Drive shaft; 3. Battery compartment; 4. Rotating shaft; 5. Active roller; 6. Follower roller; 7. Transmission belt; 8. Brush; 9. First bevel gear; 10. Drive motor; 11. Synchronous pulley; 12. Synchronous belt; 13. Roller; 14. Second bevel gear; 15. Control box; 16. Electric push rod; 17. Detector probe; 18. Push handle; 19. Controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 4The utility model provides a tank bottom magnetic leakage flaw detector, including a frame 1, the front and rear sides of the frame 1 are rotatably connected to a drive shaft 2, one end of the frame 1 is rotatably connected to a rotating shaft 4, the other end of the frame 1 is fixedly mounted with a drive motor 10, the top of the frame 1 is fixedly mounted with a battery compartment 3, the top of the frame 1 is fixedly mounted with a control box 15 located on one side of the battery compartment 3, the bottom of the battery compartment 3 is fixedly provided with a detector probe 17, one end of the drive shaft 2 is fixedly mounted with a roller 13 located outside the frame 1, the drive shaft 2 is fixedly mounted with a synchronous wheel 11 located inside the frame 1, and the two synchronous wheels 11 on the same side are connected by a synchronous belt 12, the output end of the drive motor 10 is fixedly mounted with the other end of one drive shaft 2, and the other end of the other drive shaft 2 on the same side is fixedly mounted with a second bevel gear 14, one of the rotating shafts A first bevel gear 9 is fixedly mounted on one end of the frame 1, a driving roller 5 located on the outside of the frame 1 is fixedly mounted on the other end of the rotating shaft 4, and a follower roller 6 located on the outside of the frame 1 is fixedly mounted on the other rotating shaft 4. The first bevel gear 9 is meshed with the second bevel gear 14, and the driving roller 5 and the follower roller 6 are connected by a transmission belt 7. A brush 8 is provided on the outer circumference of the transmission belt 7. By providing the brush 8, when the driving motor 10 drives the driving shaft 2 and the roller 13 to rotate, the second bevel gear 14 rotates, and the connecting shaft is driven to rotate through the first bevel gear 9, thereby rotating the driving roller 5, which drives the transmission belt 7 to rotate, and then rotating the brush 8. When the frame 1 moves and performs detection, the rotating brush 8 cleans the bottom of the tank in front of the moving path of the frame 1 to prevent affecting the detection result of the detector probe 17 on the tank bottom.

[0023] A bracket wrapped around the outside of the control box 15 is fixedly installed on the top of the frame 1, and a push handle 18 is provided on the top of the frame 1. The bottom of the push handle 18 is fixedly installed on the top of the bracket. Two drive motors 10 are fixedly installed on the other end of the frame 1. The two drive motors 10 are fixedly installed on the drive shafts 2 symmetrically arranged on both sides of the frame 1. The two sets of synchronous wheels 11 and synchronous belts 12 are symmetrically arranged on the front and rear sides of the frame 1. The detector probe 17 is located between the two synchronous belts 12. The two rotating shafts 4 are symmetrically arranged at one end of the frame 1. The active roller 5 and the driven roller 6 are the same size. A battery is provided inside the battery compartment 3, and a controller 19 is provided in the middle of the push handle 18, which is located above the battery compartment 3. An electric push rod 16 is fixedly installed at the bottom of the battery compartment 3, and the bottom of the electric push rod 16 is fixedly installed to the top of the detector probe 17. By setting two drive motors 10, the two drive motors 10 respectively drive the drive shafts 2 and rollers 13 on the front and rear sides of the frame 1 through two sets of synchronous wheels 11 and synchronous belts 12 to rotate and drive the frame 1 and the detector probe 17 to move. When the rotation speeds of the two drive motors 10 are different, the rotation speeds of the rollers 13 on both sides of the frame 1 are different, thereby causing the frame 1 to turn.

[0024] Working principle:

[0025] When the drive motor 10 drives the drive shaft 2 and the roller 13 to rotate, the second bevel gear 14 rotates, and drives the connecting shaft to rotate through the first bevel gear 9, thereby rotating the active roller 5, and the active roller 5 drives the transmission belt 7 to rotate, thereby rotating the brush 8, so that when the frame 1 moves and is tested, the rotating brush 8 cleans the bottom of the tank in front of the moving path of the frame 1 to prevent affecting the detection result of the detector probe 17 on the bottom of the tank. By setting two drive motors 10, the two drive motors 10 respectively drive the drive shafts 2 and rollers 13 on the front and rear sides of the frame 1 through two sets of synchronous wheels 11 and synchronous belts 12 to drive the frame 1 and the detector probe 17 to move. When the two drive motors 10 rotate at different speeds, the rollers 13 on both sides of the frame 1 rotate at different speeds, thereby causing the frame 1 to turn.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tank bottom magnetic leakage flaw detector, comprising a frame (1), characterized in that: The front and rear sides of the frame (1) are rotatably connected to a drive shaft (2), one end of the frame (1) is rotatably connected to a rotating shaft (4), the other end of the frame (1) is fixedly mounted with a drive motor (10), the top of the frame (1) is fixedly mounted with a battery compartment (3), the top of the frame (1) is fixedly mounted with a control box (15) located on one side of the battery compartment (3), the bottom of the battery compartment (3) is fixedly provided with a detector probe (17), one end of the drive shaft (2) is fixedly mounted with a roller (13) located outside the frame (1), the drive shaft (2) is fixedly mounted with a synchronous wheel (11) located inside the frame (1), and the two synchronous wheels (11) located on the same side are driven by a synchronous belt (12). The output end of the driving motor (10) is fixedly mounted on the other end of a driving shaft (2), and the other end of the other driving shaft (2) on the same side is fixedly mounted with a second bevel gear (14). One end of the rotating shaft (4) located inside the vehicle frame (1) is fixedly mounted with a first bevel gear (9), and the other end of the rotating shaft (4) is fixedly mounted with a driving roller (5) located outside the vehicle frame (1). The other rotating shaft (4) is fixedly mounted with a follower roller (6) located outside the vehicle frame (1). The first bevel gear (9) is meshed with the second bevel gear (14). The driving roller (5) and the follower roller (6) are connected to each other by a transmission belt (7). A brush (8) is provided on the outer peripheral surface of the transmission belt (7).

2. A tank bottom magnetic flux leakage detector according to claim 1, characterized in that: A bracket wrapped around the outside of the control box (15) is fixedly mounted on the top of the vehicle frame (1), and a push handle (18) is provided on the top of the vehicle frame (1), and the bottom of the push handle (18) is fixedly mounted on the top of the bracket.

3. The tank bottom magnetic flux leakage detector according to claim 1, characterized in that: Two drive motors (10) are fixedly mounted on the other end of the vehicle frame (1), and the two drive motors (10) are fixedly mounted on drive shafts (2) symmetrically arranged on both sides of the vehicle frame (1).

4. The tank bottom magnetic flux leakage detector according to claim 1, characterized in that: The two sets of synchronous wheels (11) and synchronous belts (12) are symmetrically arranged on the front and rear sides of the vehicle frame (1), and the detector probe (17) is located between the two synchronous belts (12).

5. The tank bottom magnetic flux leakage detector according to claim 1, characterized in that: The two rotating shafts (4) are symmetrically arranged at one end of the vehicle frame (1), and the active roller (5) and the follower roller (6) have the same size.

6. The tank bottom magnetic flux leakage detector according to claim 2, characterized in that: A storage battery is provided inside the battery compartment (3), and a controller (19) is provided in the middle of the push handle (18) and is located above the battery compartment (3).

7. The tank bottom magnetic flux leakage detector according to claim 1, characterized in that: An electric push rod (16) is fixedly mounted on the bottom of the battery compartment (3), and the bottom of the electric push rod (16) is fixedly mounted on the top of the detector probe (17).

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