Magnetic flux leakage detection device of atmospheric storage tank

Abstract

The utility model discloses a magnetic flux leakage detection device for a normal pressure storage tank, which relates to the field of magnetic flux leakage detection and comprises two detection components and two locking components, the two detection components and the two locking components are distributed in a staggered manner and are circumferentially distributed, and the locking components are arranged on the periphery of the detection components. The detection component and the locking component are connected to form a frame body, a woven belt is connected between the detection component and the locking component, the locking component can tighten the woven belt, and the detection component can carry out magnetic flux leakage detection on the atmospheric storage tank. The magnetic flux leakage detection can be carried out by controlling the detection component to move up and down during detection, the structure can adapt to atmospheric storage tanks of different specifications by winding and unwinding the woven belt, and the device is simple in structure, does not need to manufacture special tools according to the specifications of the storage tanks, can adapt to various different atmospheric storage tanks, and is simple to operate and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of magnetic flux leakage detection, in particular to a magnetic flux leakage detection device for an atmospheric storage tank. Background Technique

[0002] The outer surface of an atmospheric storage tank may develop cracks due to the increase in service time. If the cracks are not detected and repaired in time, it may lead to the rupture or even collapse of the tank body. Ultrasonic or magnetic flux leakage detection can be used to detect cracks.

[0003] Magnetic flux leakage detection is an important non-destructive testing technique widely used in the defect detection of metal materials. Magnetic flux leakage detection means that after a ferromagnetic material is magnetized, a leakage magnetic field is formed on its surface due to defects on the surface or near the surface of the test piece. At this time, the change in the leakage magnetic field can be detected to discover the defect. When a ferromagnetic material is magnetized, if the internal material of the material is continuous and uniform, the magnetic induction lines in the material will be constrained in the material, and the magnetic flux is parallel to the material surface, and there is almost no magnetic field on the surface of the material to be tested. However, if there are defects in the magnetized material, such as cracks, inclusions, etc., these defects will cause a decrease in magnetic permeability and an increase in magnetic resistance, resulting in distortion of the magnetic flux in the magnetic circuit; some magnetic fluxes will directly pass through the defects or bypass the defects from inside the material, and some magnetic fluxes will leak into the space on the surface of the material, forming a leakage magnetic field; by detecting the changes in these leakage magnetic fields, it can be judged whether there are defects inside the material, as well as their positions and sizes.

[0004] However, the diameters, heights, and floor areas of atmospheric storage tanks with different functions vary. Most of the existing magnetic flux leakage detection devices move and detect on the inner wall. Since atmospheric storage tanks often have a large inner diameter, if this method is used, large magnetic flux leakage detection devices are required, which are costly and require the manufacture of special detection tools according to different storage tanks, making them extremely inconvenient to use and unable to be adjusted conveniently according to different tank bodies.

[0005] Therefore, it is very necessary to propose a magnetic flux leakage detection device for an atmospheric storage tank to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a magnetic flux leakage detection device for an atmospheric storage tank to solve the problem of being unable to adapt to different specifications of storage tanks conveniently.

[0007] To achieve the above object, the utility model provides the following technical solution: A magnetic flux leakage detection device for an atmospheric storage tank, comprising a detection component and a locking component. There are two detection components and also two locking components. The two detection components and the two locking components are distributed alternately, and the detection components and the locking components are distributed in a circumferential manner. A braided belt is connected between the detection component and the locking component. The locking component can tighten the braided belt, and the detection component can perform magnetic flux leakage detection on the atmospheric storage tank. Moreover, the detection component can drive the locking component to rise or fall together through the braided belt. The detection component, the locking component, and the braided belt are all located on the outer surface of the atmospheric storage tank.

[0008] Preferably, the detection component includes an installation housing. One side of the installation housing is fixedly installed with a first mounting plate. The side of the first mounting plate away from the installation housing is fixedly installed with a probe. The upper and lower surfaces of the first mounting plate are both fixedly installed with support plates. On the sides of the two support plates corresponding to the probe, a first steel brush and a second steel brush are respectively fixedly installed. There is a computer inside the detection component, and the computer can control the operation of the detection component and process data. A transceiver module is fixedly installed on the upper surface of the detection component.

[0009] Preferably, both sides of the installation housing are fixedly installed with support side plates. Wheels are rotatably installed between the support side plates and the detection component. A chute is opened at a position of the support side plate close to the wheel. A sleeve is slidably clamped inside the chute. A central shaft is installed in the middle of the wheel. One end of the central shaft is rotatably clamped inside the sleeve. One end of the support side plate away from the chute is installed with a screw through a thread. One end of the screw is rotatably installed on one side of the sleeve.

[0010] Preferably, a moving plate is provided on the side of the support side plate away from the wheel. The sleeve is fixedly installed on the side surface of the moving plate. A motor is fixedly installed on the side of the moving plate away from the support side plate. The driving end of the motor penetrates through the moving plate and is fixedly installed on the central shaft.

[0011] Preferably, the locking component includes a second mounting plate. One side of the second mounting plate is fixedly installed with a winding housing. A winding wheel and a locking wheel are rotatably installed on both sides inside the winding housing. The braided belt is wound around the outer surface of the winding wheel. The locking wheel has a function of rotating and tightening. A turning handle for controlling the locking wheel is installed on the upper surface of the detection component.

[0012] Preferably, two symmetrically arranged support frames are fixedly installed on the side of the installation housing away from the first mounting plate. A rotating shaft is rotatably installed at one end of the support frame away from the installation housing. The braided belt passes through the rotating shaft and is detachably connected to the locking wheel.

[0013] Preferably, a plurality of uniformly distributed moving wheels are installed on the side of the second mounting plate away from the winding housing.

[0014] The technical effects and advantages of the present utility model:

[0015] 1. In this device, the detection component and the locking component are connected by a braided belt to form a frame. During detection, the detection component can be controlled to move up and down for magnetic flux leakage detection. This structure can adapt to different specifications of atmospheric storage tanks by retracting and releasing the braided belt. Moreover, the device has a simple structure and does not require special tools to be made according to the specifications of the storage tank, and can adapt to various atmospheric storage tanks, with simple operation and convenient use.

[0016] 2. When this device is used for different storage tanks, the screw can be rotated to control the sliding of the sleeve inside the chute, and then the position of the wheel can be controlled, so as to facilitate the close fit of the first steel brush and the second steel brush with the surface of the atmospheric storage tank, preventing the occurrence of gaps that may lead to inaccurate detection results, and enabling this device to still have high precision when facing different specifications of atmospheric storage tanks. Description of the drawings

[0017] Figure 1 It is a schematic structural diagram of the magnetic flux leakage detection device for atmospheric storage tanks of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the detection component in the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the support side plate in the present utility model.

[0020] Figure 4 It is a schematic structural diagram of the locking component in the present utility model.

[0021] In the figure: 1, detection component; 2, locking component; 3, braided belt; 11, mounting housing; 12, first mounting plate; 13, probe; 14, support plate; 15, support frame; 16, support side plate; 17, transceiver module; 21, second mounting plate; 22, winding housing; 23, winding wheel; 24, locking wheel; 25, turning handle; 26, moving wheel; 141, first steel brush; 142, second steel brush; 151, rotating shaft; 161, chute; 162, sleeve; 163, wheel; 164, central shaft; 165, moving plate; 166, screw; 167, motor. Detailed implementation manners

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figures 1 to 4 A magnetic flux leakage detection device for a normal pressure storage tank is shown, comprising a detection component 1 and a locking component 2, wherein the number of the detection components 1 is two, the number of the locking components 2 is also two, the two detection components 1 and the two locking components 2 are alternately distributed, the detection component 1 and the locking component 2 are distributed in a circular shape, a braided belt 3 is connected between the detection component 1 and the locking component 2, the locking component 2 can tighten the braided belt 3, the detection component 1 can perform magnetic flux leakage detection on the normal pressure storage tank, and the detection component 1 can drive the locking component 2 to rise or fall together through the braided belt 3, and the detection component 1, the locking component 2 and the braided belt 3 are all located on the outer surface of the normal pressure storage tank.

[0024] The outer surface of the atmospheric pressure storage tank may develop cracks due to the increase in usage time. If the cracks are not detected and repaired in time, the tank body may rupture or even collapse. Ultrasonic or magnetic leakage detection can be used to detect cracks, but the diameter, height and floor space of atmospheric pressure storage tanks with different functions are different, and the existing magnetic leakage detection devices mostly move and detect on the inner wall, and atmospheric pressure storage tanks often have a larger inner diameter. If this method is used, a large magnetic leakage detection device is required, which is costly and requires the manufacture of special detection tools according to different storage tanks. It is extremely inconvenient to use and cannot be easily adjusted according to different tank bodies.

[0025] When this device is in use, first attach the locking component 2 to both sides of the outer surface of the atmospheric storage tank. Then, place the detection component 1 on the two sides adjacent to the locking component 2. Next, pull out one end of the braided belt 3 from the locking component 2, pass the braided belt 3 through the detection component 1 and reconnect it to the tightening end of the locking component 2, and use the locking component 2 to tighten the braided belt 3. At this time, the locking component 2 can drive the detection component 1 to tightly adhere to the outer surface of the atmospheric storage tank under the drive of the braided belt 3. At this time, the two detection components 1 and the two locking components 2 form a structure similar to a frame. Then, control the detection component 1 to work. The detection component 1 can perform magnetic flux leakage detection work. Then, control the detection component 1 to move up and down, so as to perform magnetic flux leakage detection on the outer surface of the atmospheric storage tank. Because the braided belt 3 is in a straightened state, the locking component 2 can be driven to move together. The locking component 2 is used to improve the flexibility of the device movement and prevent the braided belt 3 from rubbing against the atmospheric storage tank, resulting in the inability of the detection component 1 to move. During detection, first control the detection component 1 to rise to the top, then control the detection component 1 to descend back to the original position to relax the braided belt 3, and then rotate this device to perform detection at the next position.

[0026] This device forms a frame by connecting the detection component 1 and the locking component 2 with the braided belt 3. During detection, controlling the detection component 1 to move up and down can perform magnetic flux leakage detection. This structure can adapt to atmospheric storage tanks of different specifications by taking in and releasing the braided belt 3. Moreover, the device has a simple structure, does not require making special tools according to the storage tank specifications, can adapt to various different atmospheric storage tanks, is easy to operate and convenient to use.

[0027] The detection component 1 includes an installation housing 11. On one side of the installation housing 11, a first mounting plate 12 is fixedly installed. On the side of the first mounting plate 12 away from the installation housing 11, a probe 13 is fixedly installed. On the upper and lower surfaces of the first mounting plate 12, support plates 14 are fixedly installed. On the sides of the two support plates 14 corresponding to the probe 13, a first steel brush 141 and a second steel brush 142 are respectively fixedly installed. Inside the detection component 1, there is a computer which can control the operation of the detection component 1 and process data. Inside the installation housing 11, a permanent magnet is also installed, and the permanent magnet is used to magnetize the workpiece to be measured. On the upper surface of the detection component 1, a transceiver module 17 is fixedly installed. On both sides of the installation housing 11, support side plates 16 are fixedly installed. Between the support side plates 16 and the detection component 1, wheels 163 are rotatably installed. At a position on the support side plate 16 close to the wheel 163, a chute 161 is provided. Inside the chute 161, a sleeve 162 is slidably clamped. In the middle of the wheel 163, a central shaft 164 is installed. One end of the central shaft 164 is rotatably clamped inside the sleeve 162. At one end of the support side plate 16 away from the chute 161, a screw 166 is installed by threading. One end of the screw 166 is rotatably installed on one side of the sleeve 162. On the side of the support side plate 16 away from the wheel 163, there is a moving plate 165. The sleeve 162 is fixedly installed on the side surface of the moving plate 165. On the side of the moving plate 165 away from the support side plate 16, a motor 167 is fixedly installed. The driving end of the motor 167 penetrates through the moving plate 165 and is fixedly installed on the central shaft 164.

[0028] When in use, both the first steel brush 141 and the second steel brush 142 are attached to the outer surface of the atmospheric storage tank. At this time, the computer controls the operation of the detection component 1. At this time, magnetic flux outputs from the first steel brush 141 and passes through the surface of the atmospheric storage tank and returns to the inside of the second steel brush 142, thereby forming a closed magnetic field. The probe 13 can detect the change of the magnetic field. The transceiver module 17 is signal-connected to an external computer terminal. The computer terminal is used to input instructions to the computer to control the operation of the motor 167. The operation of the motor 167 drives the wheel 163 to rotate, thereby realizing the movement of the detection component 1. Because the first steel brush 141 and the second steel brush 142 need to be closely attached to the surface of the workpiece to be measured for magnetization, considering the adhesion of the first steel brush 141 and the second steel brush 142 when used on different atmospheric storage tanks, the screw 166 is provided. When the device is used for different storage tanks, the screw 166 can be rotated to control the sliding of the sleeve 162 inside the chute 161, thereby controlling the position of the wheel 163, facilitating the close attachment of the first steel brush 141 and the second steel brush 142 to the surface of the atmospheric storage tank, preventing the occurrence of gaps that may lead to inaccurate detection results, and enabling the device to still have high precision when facing atmospheric storage tanks of different specifications.

[0029] The locking component 2 includes a second mounting plate 21. On one side of the second mounting plate 21, a winding housing 22 is fixedly installed. On both inner sides of the winding housing 22, a winding wheel 23 and a locking wheel 24 are rotatably installed. The braided belt 3 is wound around the outer surface of the winding wheel 23. The locking wheel 24 has a function of rotating and tightening. On the upper surface of the detection component 1, a turning handle 25 for controlling the locking wheel 24 is installed. On the side of the second mounting plate 21 away from the winding housing 22, a plurality of evenly distributed moving wheels 26 are installed. On the side of the mounting housing 11 away from the first mounting plate 12, two symmetrically arranged support frames 15 are fixedly installed. At the end of the support frame 15 away from the mounting housing 11, a rotating shaft 151 is rotatably installed. The braided belt 3 passes through the rotating shaft 151 and is detachably connected to the locking wheel 24.

[0030] Before use, first pull out the braided belt 3 from the winding wheel 23, then pass it through the rotating shaft 151 and install it on the locking wheel 24. At this time, the turning handle 25 can be used to drive the locking wheel 24 to work to tighten the braided belt 3, thereby realizing the fixation of the device.

[0031] Working principle: When in use, first attach the locking component 2 to both outer sides of the atmospheric storage tank, then place the detection component 1 on the two adjacent sides of the locking component 2. Then pull out one end of the braided belt 3 from the locking component 2, pass the braided belt 3 through the detection component 1 and reconnect it to the tightening end of the locking component 2, and use the locking component 2 to tighten the braided belt 3. At this time, the locking component 2 can tightly attach the detection component 1 to the outer surface of the atmospheric storage tank driven by the braided belt 3. At this time, the two detection components 1 and the two locking components 2 form a structure similar to a frame. Then control the detection component 1 to work, and the detection component 1 can perform magnetic flux leakage detection work. Then control the detection component 1 to move up and down, and then perform magnetic flux leakage detection on the outer surface of the atmospheric storage tank. Because the braided belt 3 is in a straightened state, the locking component 2 can be driven to move together. The locking component 2 is used to improve the flexibility of the device's movement and prevent the braided belt 3 from rubbing against the atmospheric storage tank, resulting in the inability of the detection component 1 to move. During detection, first control the detection component 1 to rise to the top, then control the detection component 1 to descend back to the original position to relax the braided belt 3, and then rotate the device to perform detection at the next position.

[0032] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic flux leakage detection device for a normal pressure storage tank, comprising a detection component (1) and a locking component (2), characterized in that: The number of the detection components (1) is two, and the number of the locking components (2) is also two. The two detection components (1) and the two locking components (2) are arranged in a staggered manner. The detection components (1) and the locking components (2) are arranged in a circular manner. A braided belt (3) is connected between the detection component (1) and the locking component (2). The locking component (2) can tighten the braided belt (3). The detection component (1) can perform magnetic flux leakage detection on the atmospheric pressure storage tank, and the detection component (1) can drive the locking component (2) to rise or fall together through the braided belt (3). The detection component (1), the locking component (2) and the braided belt (3) are all located on the outer surface of the atmospheric pressure storage tank.

2. The magnetic flux leakage detection device for a normal pressure storage tank according to claim 1, characterized in that: The detection component (1) comprises a mounting shell (11), a first mounting plate (12) is fixedly mounted on one side of the mounting shell (11), a probe (13) is fixedly mounted on the side of the first mounting plate (12) away from the mounting shell (11), support plates (14) are fixedly mounted on the upper and lower surfaces of the first mounting plate (12), and a first steel brush (141) and a second steel brush (142) are fixedly mounted on the sides of the two support plates (14) corresponding to the probe (13), respectively. A computer is provided inside the detection component (1), and the computer can control the operation of the detection component (1) and process data. A transceiver module (17) is fixedly mounted on the upper surface of the detection component (1).

3. The magnetic flux leakage detection device for a normal pressure storage tank according to claim 2, characterized in that: Support side plates (16) are fixedly installed on both sides of the installation shell (11), and a wheel (163) is rotatably installed between the support side plate (16) and the detection component (1). A slide groove (161) is provided on the support side plate (16) near the wheel (163), and a sleeve (162) is slidably clamped inside the slide groove (161). A central axis (164) is installed in the middle of the wheel (163), and one end of the central axis (164) is rotatably clamped inside the sleeve (162). A screw rod (166) is threadedly installed on one end of the support side plate (16) away from the slide groove (161), and one end of the screw rod (166) is rotatably mounted on one side of the sleeve (162).

4. The magnetic flux leakage detection device for atmospheric pressure storage tanks according to claim 3 is characterized in that: A movable plate (165) is provided on the side of the supporting side plate (16) away from the wheel (163); the sleeve (162) is fixedly mounted on the side surface of the movable plate (165); a motor (167) is fixedly mounted on the side of the movable plate (165) away from the supporting side plate (16); a driving end of the motor (167) passes through the movable plate (165) and is fixedly mounted on the central shaft (164).

5. The magnetic flux leakage detection device for atmospheric pressure storage tanks according to claim 4, characterized in that: The locking component (2) comprises a second mounting plate (21), a winding shell (22) is fixedly mounted on one side of the second mounting plate (21), a winding wheel (23) and a locking wheel (24) are rotatably mounted on both sides of the interior of the winding shell (22), the braided belt (3) is wound on the outer surface of the winding wheel (23), the locking wheel (24) has a rotation tightening function, and a turning handle (25) for controlling the locking wheel (24) is mounted on the upper surface of the detection component (1).

6. The magnetic flux leakage detection device for atmospheric pressure storage tanks according to claim 5, characterized in that: Two mutually symmetrical support frames (15) are fixedly mounted on one side of the mounting shell (11) away from the first mounting plate (12); a rotating shaft (151) is rotatably mounted on one end of the support frame (15) away from the mounting shell (11); the braided belt (3) passes through the rotating shaft (151) and is detachably connected to the locking wheel (24).

7. The magnetic flux leakage detection device for atmospheric pressure storage tanks according to claim 6, characterized in that: A plurality of evenly distributed moving wheels (26) are mounted on a side of the second mounting plate (21) away from the winding shell (22).

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