Large storage tank capacitance imaging aging detection device

Abstract

The utility model discloses a large storage tank capacitance imaging aging detection device, which relates to the field of nondestructive testing equipment, and adopts the technical scheme that the large storage tank capacitance imaging aging detection device comprises a vehicle body, a detection assembly is arranged in the middle of the vehicle body, a crawling assembly and a driving assembly are arranged on the vehicle body, and the driving assembly can drive the crawling assembly to adsorb and crawl along the outer surface of a storage tank. The crawling assemblies are arranged at the four corners of the vehicle body. The detection assembly comprises a shell fixedly arranged on the vehicle body, a scanning opening is formed in the bottom face of the shell, and a plane capacitance detection plate is embedded in the scanning opening. The tank body surface detection device has the beneficial effects that the tank body surface detection device can automatically walk on the surface of a tank body without manual handheld operation, so that the detection process during tank body surface detection is simplified; and the detection personnel do not need to climb to inspect, so that the safety in the detection process is improved, and the detection cost in the detection process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of nondestructive testing equipment, in particular to a large-scale storage tank capacitor imaging aging detection device. Background Art

[0002] At present, my country's petroleum industry is developing rapidly, and the storage volume of oil products is showing a continuous upward trend, and the application rate of oil storage tanks is constantly increasing. Oil storage tanks are divided into vertical cylindrical oil tanks, horizontal cylindrical oil tanks and special-shaped oil tanks according to their shapes. Vertical cylindrical oil pipes are commonly used oil storage tanks in oil fields.

[0003] However, the complexity and corrosiveness of petroleum are very high, leading to serious corrosion. Therefore, after a certain period of use, the tank body needs to be non-destructively tested. Capacitive imaging technology is a new type of non-contact, non-invasive non-destructive testing technology. It uses the edge electrostatic field formed between a pair of coplanar plates to detect defects in storage tanks.

[0004] After searching, the utility model patent with announcement number CN216816532U discloses a scanning type capacitive imaging probe, including a hollow metal shell, the metal shell is symmetrically provided with rollers, the bottom surface of the metal shell is provided with a scanning port, and the scanning port is embedded with a planar capacitive detection plate; an insulating protective layer is provided on the metal shell and below the capacitive imaging detection plate, and the insulating protective layer can cover the scanning port.

[0005] When the probe is in use, detection can be carried out by holding the handle. Since the storage tanks used in oil fields are large, with a diameter of tens of meters and a height of 10-20 meters, lifting equipment is often required to assist in inspecting large storage tanks. The inspectors stand on the lifting equipment and control the movement of the lifting equipment to assist the probe in inspection. The operation has a high risk and there is a risk of people falling. At the same time, the position of the lifting equipment needs to be changed frequently to perform circumferential detection of the storage tank. The operation process is cumbersome and wastes a lot of time. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a large storage tank capacitor imaging aging detection device.

[0007] The technical solution is as follows: it comprises a vehicle body, a detection component is arranged in the middle of the vehicle body, a crawling component and a driving component are arranged on the vehicle body, the driving component can drive the crawling component to crawl along the outer surface of the storage tank by adsorption, and the crawling component is arranged at the four corners of the vehicle body;

[0008] The detection component comprises a shell fixedly arranged on the vehicle body, a scanning port is opened on the bottom surface of the shell, and a planar capacitance detection plate is embedded in the scanning port.

[0009] Preferably, the crawling assembly includes a mounting seat fixedly arranged on the vehicle body. The mounting seat is in an "丄" shape. A chute is formed in the horizontal part at the lower end of the mounting seat. A slider is slidably arranged in the chute. A support leg is slidably arranged on the slider. An adsorption unit is fixedly arranged at the lower end of the support leg.

[0010] A sleeve is rotatably arranged at the upper end of the vertical part of the mounting seat. A rocker is slidably arranged in the sleeve. The upper end of the rocker is rotatably connected to the upper end of the support leg.

[0011] The lower end of the rocker is rotatably provided with a driving rod. The driving rod is in a "Z" shape. One end of the driving rod is rotatably connected to the lower end of the rocker, and the other end is rotatably connected to the middle part of the vertical part of the mounting seat.

[0012] Preferably, the driving rods between two opposite crawling assemblies are fixedly connected through a transmission shaft.

[0013] Preferably, the rotation axes of the driving rods and the rockers of two opposite crawling assemblies are offset. The axis lines at both ends of the two driving rods are in the same plane.

[0014] Preferably, the driving rods and the rotation axes of the rockers of two crawling assemblies on the same side are arranged oppositely.

[0015] Preferably, the adsorption unit includes an "X" - shaped bracket fixedly arranged at the lower end of the support leg. A suction cup is fixedly arranged at each of the four corners of the bracket. A vacuum pump is fixedly arranged in the middle of the bracket. The vacuum pump is respectively connected to the four suction cups through air pipes.

[0016] Preferably, the driving assembly includes a driving motor fixedly arranged on the vehicle body. Two driving sprockets are fixedly arranged on the motor shaft of the driving motor. The two driving sprockets are respectively located on both sides of the driving motor.

[0017] A driven sprocket is coaxially and fixedly arranged on each transmission shaft. A chain is connected between the driven sprocket and one of the driving sprockets.

[0018] Preferably, a traveling wheel is rotatably arranged at each of the four corners of the vehicle body.

[0019] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model are as follows: It can automatically walk on the surface of the tank body without manual holding operation, simplifying the detection process when detecting the surface of the tank body.

[0020] Inspectors do not need to climb high for inspection, improving the safety during the inspection process and reducing the inspection cost during the inspection process. Description of the Drawings

[0021] Figure 1 The overall structure of the embodiment of the utility model is shown in FIG. Figure 1 .

[0022] Figure 2 The overall structure of the embodiment of the utility model is shown in FIG. Figure 2 .

[0023] Figure 3 This is a schematic diagram of a crawling assembly and a driving assembly according to an embodiment of the utility model.

[0024] Figure 4 This is a schematic diagram of a crawling component according to an embodiment of the utility model.

[0025] Among them, the figure markings are: 1. body; 2. detection component; 3. crawling component; 4. driving component; 5. shell; 6. flat capacitance detection plate; 7. mounting seat; 8. slide groove; 9. slider; 10. leg; 11. adsorption unit; 12. sleeve; 13. rocker; 14. driving rod; 15. transmission shaft; 16. bracket; 17. suction cup; 18. vacuum pump; 19. driving motor; 20. driving sprocket; 21. driven sprocket; 22. chain; 23. walking wheel. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0028] In the description of the invention of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention of the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention of the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the creation of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the creation of the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1

[0031] See Figures 1 to 4 , the present utility model provides a large storage tank capacitance imaging aging detection device, which includes a vehicle body 1, and a detection component 2 is arranged in the middle of the vehicle body 1.

[0032] The detection component 2 includes an outer shell 5 fixedly arranged on the vehicle body 1. A scanning port is opened on the bottom surface of the outer shell 5, and a planar capacitance detection board 6 is embedded in the scanning port.

[0033] A walking wheel 23 is rotatably arranged at each of the four corners of the vehicle body 1.

[0034] The walking wheel 23 can move along the surface of the tank body, can accurately control the scanning direction, simplifies the detection process while effectively controlling the stable detection height, and reduces the error in the detection process.

[0035] Furthermore, a handle is fixedly arranged on the vehicle body 1.

[0036] When the present utility model is used, the operator can hold the handle and make the vehicle body 1 walk along the surface of the tank body to perform the detection.

[0037] Embodiment 2

[0038] On the basis of Embodiment 1, a crawling component 3 and a driving component 4 are arranged on the vehicle body 1. The driving component 4 can drive the crawling component 3 to adsorb and crawl along the outer surface of the storage tank. The crawling component 3 is arranged at the four corners of the vehicle body 1.

[0039] The crawling component 3 includes a mounting seat 7 fixedly arranged on the vehicle body 1. The mounting seat 7 is in an "丄" shape. A chute 8 is opened on the lower horizontal part of the mounting seat 7. A slider 9 is slidably arranged in the chute 8. A support leg 10 is slidably arranged on the slider 9. An adsorption unit 11 is fixedly arranged at the lower end of the support leg 10.

[0040] A sleeve 12 is rotatably arranged at the upper end of the vertical part of the mounting seat 7. A rocker 13 is slidably arranged in the sleeve 12. The upper end of the rocker 13 is rotatably connected to the upper end of the support leg 10.

[0041] A driving rod 14 is rotatably provided at the lower end of the rocking arm 13 . The driving rod 14 is in a “Z” shape. One end of the driving rod 14 is rotatably connected to the lower end of the rocking arm 13 , and the other end is rotatably connected to the middle of the vertical portion of the mounting seat 7 .

[0042] When the driving rod 14 rotates, it drives the rocker 13 to swing back and forth, and the rocker 13 drives the support leg 10 to move back and forth. When the support leg 10 moves from the front end to the rear end of the vehicle body 1, the lower end of the support leg 10 moves nearly in a straight line. When the support leg 10 moves from the rear end to the front end of the vehicle body 1, the lower end of the support leg 10 moves in a curve, thereby realizing a movement similar to animal stepping.

[0043] When the length of the rocker 13 is longer, the lower end of the leg 10 moves closer to a straight line.

[0044] The driving rods 14 of the two opposite crawling assemblies 3 are fixedly connected via a transmission shaft 15 .

[0045] The two opposing crawling assemblies 3 are linked via the transmission shaft 15 .

[0046] The driving rods 14 of the two opposing crawling assemblies 3 are staggered with the rotation axes of the rocking arm 13 , and the axes at both ends of the two driving rods 14 are in the same plane.

[0047] This design can make the two relative crawling components 3 move in opposite directions. When the adsorption unit 11 of one crawling component 3 is adsorbed on the surface of the tank body, the other adsorption unit 11 is separated from the surface of the tank body. When the adsorption unit 11 adsorbed on the surface of the tank body moves toward the rear side of the vehicle body 1, the other adsorption unit 11 moves toward the front side of the vehicle body. When it moves to the front end of the chute 8, the adsorption unit 11 starts and adsorbs on the surface of the tank body, and the other adsorption unit 11 stops working and loses adsorption on the surface of the tank body.

[0048] The driving rods 14 of the two crawling assemblies 3 on the same side are arranged opposite to the rotation axis of the rocker 13 .

[0049] The left front crawling assembly 3 moves in unison with the right rear crawling assembly 3, and the left rear crawling assembly 3 moves in unison with the right front crawling assembly 3. By utilizing the curve characteristics of the connecting rod 3, when one pair of crawling assemblies 3 moves in the straight section of the curve, they stay on the ground, while the other pair of crawling assemblies 3 are in the curve section and make a stepping motion, thereby realizing a stepping motion similar to that of an animal.

[0050] With this design, when the crawling assembly 3 moves, there are always two adsorption units 11 of the crawling assemblies 3 adsorbed on the surface of the tank body, and the two crawling assemblies 3 are diagonally located, which can effectively improve the stability of the device adsorbed on the tank body.

[0051] The adsorption unit 11 includes an "X"-shaped bracket 16 fixedly arranged at the lower end of the support leg 10, a suction cup 17 is fixedly arranged at each of the four corners of the bracket 16, and a vacuum pump 18 is fixedly arranged in the middle of the bracket 16. The vacuum pump 18 is connected to the four suction cups 17 through air pipes.

[0052] The suction cup 17 can be adsorbed on the surface of the tank under the action of the vacuum pump 18. By providing a plurality of suction cups 17, the stability of adsorption can be improved to avoid accidents caused by weak adsorption.

[0053] The driving assembly 4 includes a driving motor 19 fixedly mounted on the vehicle body 1, and two driving sprockets 20 are fixedly mounted on the motor shaft of the driving motor 19. The two driving sprockets 20 are respectively located on both sides of the driving motor 19;

[0054] A driven sprocket 21 is coaxially fixedly disposed on each transmission shaft 15 , and the driven sprocket 21 is connected to one of the driving sprockets 20 via a chain 22 .

[0055] The power output by the driving motor 19 is transmitted to the driven sprocket 21 through the driving sprocket 20 and the chain 22, thereby driving the two transmission shafts 15 to rotate respectively, so that the four crawling components 3 can work, thereby realizing animal-like stepping movements, and with the cooperation of the adsorption unit 11, walking on the surface of the tank can be achieved.

[0056] Furthermore, a safety rope is provided on the vehicle body 1. When the tank body is inspected, the safety rope is fixed to the upper end of the tank body. The length of the safety rope is slightly smaller than the height of the tank body, which can effectively avoid the risk of the vehicle body 1 falling due to weak adsorption of the adsorption unit. The safety rope can prevent the device from being damaged.

[0057] This device can not only perform axial detection on the tank body, but also perform circumferential detection on the tank body by changing the position of the device. During the detection process, one person is required to hold a safety rope on the upper part of the tank body and move with the movement of the vehicle body 1 to improve the safety of the device during use.

[0058] Example 3

[0059] Based on Example 2, a ball joint connection is adopted between the bracket 16 and the leg 10. Since the outer surface of the tank body is arc-shaped, the ball joint connection can enable the adsorption unit 11 to fit the outer surface of the tank body more accurately, thereby improving the stability of the adsorption unit 11 during adsorption.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-scale storage tank capacitor imaging aging detection device, characterized in that: It includes a vehicle body (1), a detection component (2) is arranged in the middle of the vehicle body (1), a crawling component (3) and a driving component (4) are arranged on the vehicle body (1), the driving component (4) can drive the crawling component (3) to adsorb and crawl along the outer surface of the storage tank, and the crawling component (3) is arranged at the four corners of the vehicle body (1); The detection component (2) includes a housing (5) fixedly arranged on the vehicle body (1), a scanning port is opened on the bottom surface of the housing (5), and a planar capacitance detection board (6) is embedded in the scanning port.

2. The large-scale storage tank capacitor imaging aging detection device according to claim 1 is characterized in that: The crawling component (3) includes a mounting seat (7) fixedly arranged on the vehicle body (1), the mounting seat (7) is in an "丄" shape, a chute (8) is opened on the lower horizontal part of the mounting seat (7), a slider (9) is slidably arranged in the chute (8), a support leg (10) is slidably arranged on the slider (9), and an adsorption unit (11) is fixedly arranged at the lower end of the support leg (10); A sleeve (12) is rotatably arranged at the upper end of the vertical part of the mounting seat (7), a rocker (13) is slidably arranged in the sleeve (12), and the upper end of the rocker (13) is rotatably connected to the upper end of the support leg (10); A driving rod (14) is rotatably arranged at the lower end of the rocker (13), the driving rod (14) is in a "Z" shape, one end of the driving rod (14) is rotatably connected to the lower end of the rocker (13), and the other end is rotatably connected to the middle of the vertical part of the mounting seat (7).

3. The large-scale storage tank capacitor imaging aging detection device according to claim 2 is characterized in that: The driving rods (14) of two opposite crawling components (3) are fixedly connected by a transmission shaft (15).

4. The large-scale storage tank capacitor imaging aging detection device according to claim 3 is characterized in that: The rotation axes of the driving rods (14) and the rockers (13) of two opposite crawling components (3) are staggered, and the axis lines at both ends of the two driving rods (14) are in the same plane.

5. The large-scale storage tank capacitor imaging aging detection device according to claim 4 is characterized in that: The driving rods (14) of two crawling components (3) on the same side are oppositely arranged with the rotation axis of the rocker (13).

6. The large-scale storage tank capacitor imaging aging detection device according to claim 2 is characterized in that: The adsorption unit (11) includes an "X" - shaped bracket (16) fixedly arranged at the lower end of the support leg (10), a suction cup (17) is fixedly arranged at each of the four corners of the bracket (16), a vacuum pump (18) is fixedly arranged in the middle of the bracket (16), and the vacuum pump (18) is respectively communicated with the four suction cups (17) through air pipes.

7. The large storage tank capacitor imaging aging detection device according to claim 3 is characterized in that: The driving component (4) includes a driving motor (19) fixedly arranged on the vehicle body (1), two driving sprockets (20) are fixedly arranged on the motor shaft of the driving motor (19), and the two driving sprockets (20) are respectively located on both sides of the driving motor (19); A driven sprocket (21) is coaxially fixedly arranged on each transmission shaft (15), and a chain (22) is connected between the driven sprocket (21) and one of the driving sprockets (20).

8. The large storage tank capacitor imaging aging detection device according to claim 1 is characterized in that: A traveling wheel (23) is rotatably arranged at each of the four corners of the vehicle body (1).

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