Spherical tank weld joint time-of-flight diffraction ultrasonic detection scanning robot

Abstract

The utility model discloses a spherical tank weld joint time-of-flight diffraction ultrasonic detection scanning robot, and relates to the technical field of weld joint detection, the spherical tank weld joint time-of-flight diffraction ultrasonic detection scanning robot comprises an outer shell, the outer shell is internally provided with a second cavity, in the spherical tank weld joint time-of-flight diffraction ultrasonic detection scanning robot, a driving motor works to drive two rotating rods and a brush plate to rotate at the same time, and impurities around a weld joint can be cleaned; meanwhile, a first pump body works to drive cleaned impurities to enter a second cavity through a third connecting pipe, a second connecting pipe and a first connecting pipe in sequence to be collected, the situation that the impurities exist around the weld joint influence propagation of ultrasonic waves is prevented, and the ultrasonic detection efficiency is improved; a second pump body works to send a coupling agent in a first cavity out of one end of a second conveying pipe through a first conveying pipe, meanwhile, along with movement of a scanning robot, after the coupling agent flows out of one end of the second conveying pipe, a scraping roller can spread the flowing-out coupling agent, so that the coupling agent is smeared more uniformly, and the efficiency is improved. Therefore, the detection result of the detector is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of weld detection, in particular to a diffraction time-of-arrival ultrasonic detection and scanning robot for spherical tank welds. Background Art

[0002] A spherical tank is a large-capacity, pressure-bearing spherical storage container, which is widely used in departments such as petroleum, chemical industry, and metallurgy. It can be used as a storage container for liquefied petroleum gas, liquefied natural gas, liquid ammonia, and other media. Ultrasonic non-destructive testing is required for the welds and cracks of large welded spherical tanks.

[0003] In the prior art, when using a detection robot to perform ultrasonic detection on the welds of a spherical tank, due to the presence of impurities such as waste slag or oxides on the welds, the propagation of ultrasonic waves is affected. If these impurities are not cleaned before detection, it will cause the attenuation or distortion of the propagation signal during detection, thereby affecting the accuracy of detection. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that it is not convenient to clean the impurities at the weld, resulting in the attenuation of the propagation signal during ultrasonic detection and affecting the detection result, and to propose a diffraction time-of-arrival ultrasonic detection and scanning robot for spherical tank welds.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A diffraction time-of-arrival ultrasonic detection and scanning robot for spherical tank welds, including an outer shell. A second cavity is provided inside the outer shell. The top of the second cavity is fixedly communicated with a first connecting pipe. One end of the first connecting pipe passes through one side of the outer shell and is fixedly communicated with a first pump. One end of the first pump is fixedly communicated with a second connecting pipe. A third connecting pipe is fixedly communicated with the outside of the second connecting pipe. A positioning plate is fixedly connected to the outside of the third connecting pipe. The end of the positioning plate is fixedly connected with a support member. The end of the support member is fixedly connected to one side of the outer shell.

[0006] Preferably, two rotating rods are rotatably connected to one side of the support member. One end of each of the two rotating rods is fixedly connected with a brush plate.

[0007] Preferably, the other end of one of the rotating rods is fixedly connected with a driving motor. One side of the driving motor is fixedly connected to one side of the support member. A transmission component is installed between the two rotating rods.

[0008] Preferably, a first cavity is provided inside the outer shell. The bottom of the first cavity is fixedly communicated with a first delivery pipe. One end of the first delivery pipe passes through one side of the outer shell and is fixedly communicated with a second pump. The second pump is fixedly connected to one side of the outer shell. One end of the second pump is fixedly communicated with a second delivery pipe.

[0009] Preferably, one side of the outer casing is fixedly connected with a fixing plate, one end of the fixing plate is provided with a leveling roller, and one end of the second conveying pipe passes through the fixing plate.

[0010] Preferably, one side of the fixing plate is fixedly connected with a detector.

[0011] Preferably, crawler assemblies are installed at both ends of the bottom side of the outer casing.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. In the present utility model, by the operation of the driving motor, two rotating rods and the brush plate are driven to rotate simultaneously, so that impurities around the weld can be cleaned. At the same time, the first pump body operates to drive the cleaned impurities to enter the interior of the second cavity through the third connecting pipe, the second connecting pipe and the first connecting pipe in sequence and be collected, preventing impurities from existing around the weld from affecting the propagation of ultrasonic waves and improving the efficiency of ultrasonic detection.

[0014] 2. In the present utility model, the coupling agent inside the first cavity is sent out from one end of the second conveying pipe through the first conveying pipe by the operation of the second pump body. At the same time, as the scanning robot moves, after the coupling agent flows out from one end of the second conveying pipe, the leveling roller can spread out the flowing coupling agent, making the coating of the coupling agent more uniform, so that the detection result of the detector is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of a time-of-flight diffraction ultrasonic testing scanning robot for spherical tank welds proposed by the present utility model;

[0016] Figure 2 is an internal sectional structural schematic diagram of a time-of-flight diffraction ultrasonic testing scanning robot for spherical tank welds proposed by the present utility model;

[0017] Figure 3 is a support member connection structural schematic diagram of a time-of-flight diffraction ultrasonic testing scanning robot for spherical tank welds proposed by the present utility model;

[0018] Figure 4 is a fixing plate connection structural schematic diagram of a time-of-flight diffraction ultrasonic testing scanning robot for spherical tank welds proposed by the present utility model.

[0019] Legend: 1. Outer shell; 2. First pump body; 3. First connecting pipe; 4. Second connecting pipe; 5. Rotating rod; 6. Brush plate; 7. Crawler assembly; 8. First cavity; 9. Second cavity; 10. Driving motor; 11. Transmission assembly; 12. Third connecting pipe; 13. Support member; 14. Second pump body; 15. First conveying pipe; 16. Second conveying pipe; 17. Screeding roller; 18. Detector; 19. Fixed plate; 20. Positioning plate. Detailed implementation mode

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, the present invention provides a diffraction time-of-arrival ultrasonic inspection and scanning robot for spherical tank welds, including an outer shell 1. A second cavity 9 is opened inside the outer shell 1. The top of the second cavity 9 is fixedly communicated with a first connecting pipe 3. One end of the first connecting pipe 3 passes through one side of the outer shell 1 and is fixedly communicated with a first pump body 2. One end of the first pump body 2 is fixedly communicated with a second connecting pipe 4. The outside of the second connecting pipe 4 is fixedly communicated with a third connecting pipe 12. The outside of the third connecting pipe 12 is fixedly connected with a positioning plate 20. The end of the positioning plate 20 is fixedly connected with a support member 13. The end of the support member 13 is fixedly connected to one side of the outer shell 1; two rotating rods 5 are rotatably connected to one side of the support member 13. One end of each of the two rotating rods 5 is fixedly connected with a brush plate 6; the other end of one of the rotating rods 5 is fixedly connected with a driving motor 10. One side of the driving motor 10 is fixedly connected to one side of the support member 13. A transmission assembly 11 is installed between the two rotating rods 5.

[0024] When the scanning robot moves for weld detection, the transmission assembly 11 is composed of two transmission wheels and a transmission belt. When the driving motor 10 works, through the setting of the transmission assembly 11, the two rotating rods 5 can be driven to rotate simultaneously, and the brush plate 6 rotates accordingly. The rotation of the brush plate 6 can clean the impurities around the weld. At the same time, the first pump body 2 works to drive the cleaned impurities to enter the inside of the second cavity 9 through the third connecting pipe 12, the second connecting pipe 4, and the first connecting pipe 3 in sequence and be collected, preventing impurities around the weld from affecting the propagation of ultrasonic waves and improving the efficiency of ultrasonic detection. An opening is provided on one side of the second cavity 9, which can be used to clean the impurities collected inside the second cavity 9.

[0025] Embodiment 2

[0026] As Figure 2 and Figure 4 As shown, a first cavity 8 is opened inside the outer shell 1. The bottom of the first cavity 8 is fixedly communicated with a first delivery pipe 15. One end of the first delivery pipe 15 passes through one side of the outer shell 1 and is fixedly communicated with a second pump body 14. The second pump body 14 is fixedly connected to one side of the outer shell 1. One end of the second pump body 14 is fixedly communicated with a second delivery pipe 16; a fixing plate 19 is fixedly connected to one side of the outer shell 1. A leveling roller 17 is installed at one end of the fixing plate 19. One end of the second delivery pipe 16 passes through the fixing plate 19; a detector 18 is fixedly connected to one side of the fixing plate 19; crawler assemblies 7 are installed at both ends of the bottom side of the outer shell 1.

[0027] The effect achieved by the entire embodiment is that the crawler assembly 7 is composed of a driving member and a crawler. According to the self-weight and load of the robot, a plurality of permanent magnets are equidistantly installed on the crawler. Through the cooperation of the driving member and the crawler, the inspection robot can move inside the spherical tank. At the same time, the permanent magnets at the contact between the crawler and the inner wall of the spherical tank are adsorbed on the tank wall, so that the adhesion ability of the crawler is good, which can reduce the instability of the robot when moving inside the spherical tank, and make the inspection robot firmly adsorbed on the container. The operator can control the movement of the driving member to manipulate the robot to move forward and backward for inspection inside the spherical tank. When the inspection robot moves, the second pump body 14 works to send the coupling agent inside the first cavity 8 through the first delivery pipe 15 from one end of the second delivery pipe 16. At the same time, as the inspection robot moves, after the coupling agent is sent out from one end of the second delivery pipe 16, the leveling roller 17 can spread out the flowing coupling agent, making the coupling agent smear more evenly, so that the detection result of the detector 18 is more accurate. The detector 18 is built on the inspection robot. The detector 18 is used for time-of-flight diffraction ultrasonic testing of the spherical tank weld. At the same time, a camera is arranged inside the detector 18, which can automatically identify and track the weld to prevent the detection path from deviating. The inspection robot is connected to the control center arranged inside the detector 18 to set the inspection path for the robot. The inspection robot can perform segmented inspection according to the set distance. An opening is arranged on one side of the first cavity 8 to add coupling agent into the first cavity 8. At the same time, when water spraying is required, the added coupling agent can be replaced with water, so that the robot can automatically spray water through the work of the second pump body 14 during the detection process.

[0028] The usage method and working principle of this device: Through the setting of the crawler assembly 7, the inspection robot can move inside the spherical tank. When the inspection robot moves to detect the weld, when the driving motor 10 works, it can drive two rotating rods 5 to rotate at the same time, and the brush plate 6 rotates accordingly. The rotation of the brush plate 6 can clean the impurities around the weld. At the same time, the first pump body 2 works to drive the cleaned impurities to enter the inside of the second cavity 9 through the third connecting pipe 12, the second connecting pipe 4 and the first connecting pipe 3 in sequence and be collected. When the inspection robot moves, the second pump body 14 works to send the coupling agent inside the first cavity 8 through the first delivery pipe 15 from one end of the second delivery pipe 16. At the same time, as the inspection robot moves, after the coupling agent flows out from one end of the second delivery pipe 16, the leveling roller 17 can spread out the flowing coupling agent for the detection of the detector 18.

[0029] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot, comprising an outer shell (1), characterized in that: The outer shell (1) has a second cavity (9) formed inside, the top of the second cavity (9) is fixedly connected to a first connecting pipe (3), one end of the first connecting pipe (3) passes through a side of the outer shell (1) and is fixedly connected to a first pump body (2), one end of the first pump body (2) is fixedly connected to a second connecting pipe (4), the outside of the second connecting pipe (4) is fixedly connected to a third connecting pipe (12), the outside of the third connecting pipe (12) is fixedly connected to a positioning plate (20), the end of the positioning plate (20) is fixedly connected to a support member (13), and the end of the support member (13) is fixedly connected to one side of the outer shell (1).

2. According to claim 1, a spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot is characterized by: One side of the support member (13) is rotatably connected to two rotating rods (5), and one end of the two rotating rods (5) is fixedly connected to a brush plate (6).

3. The spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot according to claim 2 is characterized by: The other end of one of the rotating rods (5) is fixedly connected to a driving motor (10), one side of the driving motor (10) is fixedly connected to one side of a supporting member (13), and a transmission assembly (11) is installed between the two rotating rods (5).

4. The spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot according to claim 1 is characterized by: A first cavity (8) is provided inside the outer shell (1); the bottom of the first cavity (8) is fixedly connected to a first delivery pipe (15); one end of the first delivery pipe (15) passes through one side of the outer shell (1) and is fixedly connected to a second pump body (14); the second pump body (14) is fixedly connected to one side of the outer shell (1); one end of the second pump body (14) is fixedly connected to a second delivery pipe (16).

5. The spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot according to claim 4 is characterized by: A fixing plate (19) is fixedly connected to one side of the outer shell (1), a scraping roller (17) is installed at one end of the fixing plate (19), and one end of the second conveying pipe (16) passes through the fixing plate (19).

6. The spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot according to claim 5 is characterized by: A detector (18) is fixedly connected to one side of the fixing plate (19).

7. The spherical tank weld diffraction time-of-flight ultrasonic inspection scanning robot according to claim 1 is characterized by: Track assemblies (7) are installed at both ends of the bottom side of the outer shell (1).

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