Steel structure welding seam detection device

Abstract

A steel structure welding seam detection device comprises a main body pipe; the rotating pipe is rotationally arranged at the end part of the main body pipe; the rotating device is arranged on the main body pipe, connected with the rotating pipe and used for driving the rotating pipe to rotate on the main body pipe; the weld visual inspection device is arranged on the inner wall of the rotating pipe and is used for performing visual identification on surface defects of the target steel pipe; the helium conveying assembly is used for guiding helium into the target steel pipe; and the leak detection device comprises a first electric push rod, a detection bin and a helium detector, the first electric push rod is arranged on the rotating pipe, the detection bin is arranged at the telescopic end of the first electric push rod, the detection bin is connected with the target steel pipe in an abutting mode, and the helium detector is arranged in the detection bin. Therefore, high-precision and high-reliability surface defect and air tightness detection can be carried out on the annular welding seam on the steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure welding, and in particular to a steel structure weld detection device. Background Art

[0002] A steel structure is a structure composed of steel materials and is one of the main types of building structures. The structure is mainly composed of beam steels, steel columns, steel trusses, pipelines and other components made of section steels, steel plates and steel pipes, and the components or parts are usually connected by welds.

[0003] In the related art, after detecting the surface defects of the weld, the soap bubble test method is often used to detect the airtightness of the weld. However, when facing such circumferential welds on steel pipes, it is difficult to evenly apply the soapy water to the entire circumferential area. Spraying or brushing the soapy water may also not be precise enough, and it is easy to miss some areas, affecting the detection accuracy and reliability of the detection results. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the above-mentioned technologies to a certain extent.

[0005] For this purpose, the object of the present invention is to provide a steel structure weld detection device capable of performing high-precision and high-reliability surface defect and airtightness detection on circumferential welds on steel pipes.

[0006] To achieve the above object, the present invention provides a steel structure weld detection device, including: a main pipe; a rotating pipe rotatably arranged at the end of the main pipe; a rotating device arranged on the main pipe and connected to the rotating pipe for driving the rotating pipe to rotate on the main pipe; a weld visual detection device arranged on the inner wall of the rotating pipe for visually identifying the surface defects of the target steel pipe; a helium gas supply assembly for introducing helium gas into the target steel pipe; a leak detection device, the leak detection device includes: a first electric push rod, a detection chamber and a helium gas detector, wherein the first electric push rod is arranged on the rotating pipe, the detection chamber is arranged on the telescopic end of the first electric push rod, the detection chamber is in contact connection with the target steel pipe, and the helium gas detector is arranged in the detection chamber.

[0007] In an embodiment of the present invention, the detection chamber is detachably connected to the driving end of the first electric push rod through a threaded connector, the opening direction of the detection chamber faces the target steel pipe, and the contact surface between the detection chamber and the target steel pipe is an arc surface.

[0008] In an embodiment of the present invention, the rotating device includes: a support plate, a first motor, a driving wheel, and a toothed ring. Among them, the main body pipe is fixedly arranged on the support plate, the first motor is arranged on the support plate, the driving wheel is arranged at the driving end of the first motor, the toothed ring is fixedly arranged on the rotating pipe, and the driving wheel meshes with the toothed ring.

[0009] In an embodiment of the present invention, the weld visual inspection device includes: a second electric push rod and a visual sensor. Among them, the second electric push rod is arranged on the rotating pipe, and the visual sensor is arranged at the driving end of the second electric push rod.

[0010] In an embodiment of the present invention, the helium gas transmission assembly includes: two helium gas transmission devices arranged symmetrically. Among them, the rotating pipe is arranged between the two helium gas transmission devices.

[0011] In an embodiment of the present invention, the helium gas transmission device includes: a driving member, a first hydraulic telescopic device, a sealing plate, and a gas guide pipe. Among them, the first hydraulic telescopic device is arranged on the driving member, the sealing plate is arranged at the driving end of the first hydraulic telescopic device, and the gas guide pipe is arranged on the sealing plate.

[0012] In an embodiment of the present invention, the driving member includes: a driving chamber, a second motor, a ball screw, a ball slider, and an electric telescopic rod. Among them, the second motor is arranged in the driving chamber, the ball screw is arranged at the driving end of the second motor, the ball slider is arranged on the ball screw, and the ball slider is connected to the hydraulic telescopic device through the electric telescopic rod.

[0013] In an embodiment of the present invention, a support rod is arranged on the driving chamber, and the driving chamber is arranged above the first hydraulic telescopic device. A sealing ring is arranged on the sealing plate.

[0014] In an embodiment of the present invention, it further includes: a second hydraulic telescopic device, a plurality of plate bodies, and a plurality of pipe support members. The plurality of plate bodies and the plurality of pipe support members correspond one by one. Among them, the support plate is fixedly arranged at the driving end of the second hydraulic telescopic device. The pipe support member is a V-shaped plate, and the pipe support member is arranged on the plate body through a threaded connection member, and the pipe support member is in contact connection with the target steel pipe.

[0015] In an embodiment of the present invention, a defect spraying and marking device is installed at the driving end of the first electric push rod.

[0016] Advantages of the present invention: When the first electric push rod control detection chamber abuts against the side of the target steel pipe, the rotating device drives the rotating pipe to rotate, causing the detection chamber to rotate around the target steel pipe. When there is a problem with the airtightness of the weld, the helium gas entering the detection chamber through the weld can be detected by a helium detector. When facing a circular weld, this detection method is more efficient, will not miss some areas, and improves the detection accuracy and reliability of the detection results.

[0017] When the visual sensor finds obvious unqualified problems in the visual inspection, it can stop the more complex airtightness detection, thus saving time and cost.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0019] The above-mentioned and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, wherein: Figure 1 It is a schematic diagram of the overall structure of a steel structure weld detection device according to an embodiment of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of a steel structure weld detection device according to an embodiment of the present invention; Figure 3 It is a schematic cross-sectional structure diagram of a steel structure weld detection device according to another embodiment of the present invention; Figure 4 It is a schematic cross-sectional structure diagram of a leak detection device according to an embodiment of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of a driving member according to an embodiment of the present invention.

[0020] As shown in the figure: 1. Main body pipe, 2. Rotating pipe, 3. Rotating device, 4. Weld visual inspection device, 5. Helium gas delivery assembly, 6. Leak detection device, 7. First electric push rod, 8. Detection chamber, 9. Helium detector, 10. Support plate, 11. First motor, 12. Driving wheel, 13. Tooth ring, 14. Second electric push rod, 15. Visual sensor, 16. Helium gas delivery device, 17. Driving member, 18. First hydraulic telescopic device, 19. Sealing plate, 20. Air duct, 21. Driving chamber, 22. Second motor, 23. Ball screw, 24. Ball slider, 25. Electric telescopic rod, 26. Support rod, 27. Sealing ring, 28. Second hydraulic telescopic device, 29. Plate body, 30. Pipe body support member, 31. Defect spraying and marking device. Detailed Embodiments

[0021] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The steel structure weld detection device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0023] As Figure 1 、 Figure 2 and Figure 4 shown, the steel structure weld detection device according to an embodiment of the present invention may include: a main body tube 1, a rotating tube 2, a rotating device 3, a weld visual detection device 4, a helium gas supply assembly 5, and a leak detection device 6.

[0024] Among them, the rotating tube 2 is rotatably arranged at the end of the main body tube 1, the rotating device 3 is arranged on the main body tube 1, and the rotating device 3 is connected to the rotating tube 2 through a bearing. The rotating device 3 is used to drive the rotating tube 2 to rotate on the main body tube 1. The weld visual detection device 4 is arranged on the inner wall of the rotating tube 2 and is used for visually identifying surface defects of the target steel pipe. The helium gas supply assembly 5 is used to introduce helium gas into the target steel pipe.

[0025] It can be understood that in this embodiment, the rotating device 3 drives the rotating tube 2 to rotate on the main body tube 1 so as to facilitate the weld visual detection device 4 to visually detect surface defects of the circumferential weld on the target steel pipe. Whether a weld airtightness test (also called a leak test or a sealing test) needs to be performed is determined according to the detection result of the weld visual detection device 4. If the surface defect affects the use of the target steel pipe, the airtightness test is not performed; otherwise, the airtightness test is performed.

[0026] The leak detection device 6 includes: a first electric push rod 7, a detection chamber 8, and a helium gas detector 9. Among them, the first electric push rod 7 is arranged on the rotating tube 2, the detection chamber 8 is arranged on the telescopic end of the first electric push rod 7, the detection chamber 8 is in contact connection with the target steel pipe, and the helium gas detector 9 is arranged in the detection chamber 8.

[0027] It should be noted that after the helium gas supply assembly 5 introduces helium gas into the target steel pipe in this embodiment, if the weld airtightness is not good, the helium gas will enter the detection chamber 8 through the weld, and the helium gas detector 9 can detect the helium gas entering the detection chamber 8.

[0028] Furthermore, as Figures 2 - 4 shown, the detection chamber 8 is detachably connected to the driving end of the first electric push rod 7 through a threaded connector. The opening direction of the detection chamber 8 faces the target steel pipe, and the contact surface between the detection chamber 8 and the target steel pipe is an arc surface.

[0029] It is understandable that the first electric push rod 7 described in this embodiment can be connected to the side of the target steel pipe by the detection chamber 8. And the detection chamber 8 can still slide on the target steel pipe after being in contact with the target steel pipe.

[0030] In order to clearly explain the above embodiment, in one embodiment of the present invention, as Figure 1 and Figure 2 As shown, the rotating device 3 may include: a support plate 10, a first motor 11, a driving wheel 12 and a gear ring 13, wherein the main tube 1 is fixedly arranged on the support plate 10, the first motor 11 is arranged on the support plate 10, the driving wheel 12 is arranged at the driving end of the first motor 11, the gear ring 13 is fixedly arranged on the rotating tube 2, and the driving wheel 12 and the gear ring 13 are meshed with each other.

[0031] It can be understood that the first motor 11 described in this embodiment can drive the gear ring 13 to rotate via the driving wheel 12 , and drive the rotating tube 2 to rotate on the main tube 1 via the gear ring 13 .

[0032] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the weld visual inspection device 4 may include: a second electric push rod 14 and a visual sensor 15 , wherein the second electric push rod 14 is arranged on the rotating tube 2 , and the visual sensor 15 is arranged at the driving end of the second electric push rod 14 .

[0033] It can be understood that the second electric push rod 14 described in this embodiment can adjust the working position of the visual sensor 15 to adapt to different steel pipes.

[0034] In one embodiment of the present invention, Figure 2 , Figure 4 and Figure 5 As shown, the helium gas delivery assembly 5 includes: two helium gas delivery devices 16 symmetrically arranged, wherein the rotating tube 2 is arranged between the two helium gas delivery devices 16.

[0035] The helium gas delivery device 16 may include: a driving member 17, a first hydraulic telescopic device 18, a blocking plate 19 and an air guide tube 20, wherein the first hydraulic telescopic device 18 is arranged on the driving member 17, the blocking plate 19 is arranged at the driving end of the first hydraulic telescopic device 18, and the air guide tube 20 is arranged on the blocking plate 19. A sealing ring 27 is arranged on the blocking plate 19.

[0036] It should be noted that one of the air guide tubes 20 described in this embodiment can be connected to a helium delivery device, and the other air guide tube 20 can be connected to a gas extraction device.

[0037] The driving member 17 may include: a driving chamber 21, a second motor 22, a ball screw 23, a ball slider 24, and an electric telescopic rod 25. Among them, the second motor 22 is arranged in the driving chamber 21, the ball screw 23 is arranged on the driving end of the second motor 22, the ball slider 24 is arranged on the ball screw 23, and the ball slider 24 is connected to the hydraulic telescopic device through the electric telescopic rod 25. It can be understood that the second motor 22 described in this embodiment can drive the ball screw 23 to rotate, the ball slider 24 can move on the rotating ball screw 23, and the ball slider 24 can drive the first hydraulic telescopic device 18 to move through the electric telescopic rod 25 to adjust the position of the sealing plate 19.

[0038] Specifically, before detecting the steel pipe weld, it is necessary to connect an external helium delivery device to a gas guide pipe 20, connect an external air extraction device to another gas guide pipe 20, and recycle the helium. Pass the target steel pipe through the rotating pipe 2, and the target steel pipe can be fixed with an external fixture or support.

[0039] First, perform surface defect detection. The rotating device 3 drives the rotating pipe 2 to rotate on the main pipe 1. The rotating pipe 2 can drive the vision sensor 15 to approach the target steel pipe through the second electric push rod 14. Rotating the vision sensor 15 around the target steel pipe can perform visual inspection on the circumferential weld of the target steel pipe. If defects are detected visually on the target steel pipe, the test is aborted. If no defects are detected visually on the target steel pipe, start the airtightness test.

[0040] The driving member 17 can drive the first hydraulic telescopic device 18 to move horizontally. The first hydraulic telescopic device 18 can control the sealing plate 19 to abut against the end of the target steel pipe. After the two ends of the target steel pipe are sealed by the two sealing plates 19, a closed space can be formed inside the steel pipe. The external helium delivery device introduces helium into the steel pipe through the gas guide pipe 20.

[0041] The first electric push rod 7 drives the detection chamber 8 to abut against the target steel pipe. The rotating device 3 drives the rotating pipe 2 to rotate. The rotating pipe 2 can drive the detection chamber 8 to rotate around the target steel pipe in the case of abutting against the target steel pipe through the first electric push rod 7. If there is a problem with the airtightness of the weld, helium will penetrate through the weld into the detection chamber 8, and the helium detector 9 will detect the helium entering the detection chamber 8.

[0042] It may further include: a second hydraulic telescopic device 28, a plurality of plate bodies 29, and a plurality of pipe support members 30. The plurality of plate bodies 29 and the plurality of pipe support members 30 correspond to each other one by one. Among them, the support plate 10 is fixedly arranged at the driving end of the second hydraulic telescopic device 28. The pipe support member 30 is in the shape of a V-shaped plate, and the pipe support member 30 is arranged on the plate body 29 through a threaded connector. The pipe support member 30 is in contact connection with the target steel pipe. A support rod 26 is arranged on the driving chamber 21, and the driving chamber 21 is arranged above the first hydraulic telescopic device 18.

[0043] It can be understood that the second hydraulic telescopic device 28 described in this embodiment can adjust the vertical position of the rotating pipe 2 through the support plate 10. The detection chamber 8 is connected to the first electric push rod 7 through a threaded connector, and the sealing plate 19 is also connected to the first hydraulic telescopic device 18 through a threaded connector, which is convenient for replacement and also means that this application can be applicable to steel pipes of various sizes.

[0044] In an embodiment of the present invention, as Figure 1 and Figure 4 shown, a defect spraying marking device 31 is installed on the driving end of the first electric push rod 7. The defect spraying marking device 31 can spray codes at the weld leakage points for subsequent repair treatment.

[0045] It should be noted that the motors (for example, the first motor 11, the second motor 22, etc.) described in the above embodiments are equipped with brake brakes. Through the brake brakes, the motors can be quickly stopped. A speed reducer is arranged on the driving end of the motor. The driving end of the motor is connected to the input end of the speed reducer, and the output end of the speed reducer constitutes the driving end of the motor. The rotation speed output by the motor is adjusted through the speed reducer.

[0046] In summary, the steel structure weld detection device of the embodiment of the present invention can be applicable to light belts of various specifications and has strong applicability.

[0047] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A steel structure weld detection device, characterized in that Comprising: Main body pipe (1); Rotating pipe (2), rotatably arranged at the end of the main body pipe (1); Rotating device (3), arranged on the main body pipe (1) and connected to the rotating pipe (2) for driving the rotating pipe (2) to rotate on the main body pipe (1); Weld seam visual inspection device (4), arranged on the inner wall of the rotating pipe (2) for visually identifying surface defects of the target steel pipe; Helium gas transmission component (5) for introducing helium gas into the target steel pipe; Leak detection device (6), the leak detection device (6) includes: first electric push rod (7), detection chamber (8) and helium gas detector (9), wherein, the first electric push rod (7) is arranged on the rotating pipe (2), the detection chamber (8) is arranged on the telescopic end of the first electric push rod (7), the detection chamber (8) is in contact connection with the target steel pipe, and the helium gas detector (9) is arranged in the detection chamber (8).

2. The steel structure weld detection device according to claim 1, wherein, The detection chamber (8) is detachably connected to the driving end of the first electric push rod (7) through a threaded connector, the opening direction of the detection chamber (8) faces the target steel pipe, and the contact surface between the detection chamber (8) and the target steel pipe is an arc surface.

3. The steel structure weld detection device according to claim 1, wherein, The rotating device (3) includes: support plate (10), first motor (11), driving wheel (12) and tooth ring (13), wherein, the main body pipe (1) is fixedly arranged on the support plate (10), the first motor (11) is arranged on the support plate (10), the driving wheel (12) is arranged on the driving end of the first motor (11), the tooth ring (13) is fixedly arranged on the rotating pipe (2), and the driving wheel (12) meshes with the tooth ring (13).

4. The steel structure weld detection device according to claim 1, wherein, The weld seam visual inspection device (4) includes: second electric push rod (14) and visual sensor (15), wherein, the second electric push rod (14) is arranged on the rotating pipe (2), and the visual sensor (15) is arranged on the driving end of the second electric push rod (14).

5. The steel structure weld detection device according to claim 1, characterized in that The helium gas transmission component (5) includes: two symmetrically arranged helium gas transmission devices (16), wherein, the rotating pipe (2) is arranged between the two helium gas transmission devices (16).

6. The steel structure weld detection device according to claim 5, characterized in that The helium gas transmission device (16) includes: driving member (17), first hydraulic telescopic device (18), plugging plate (19) and air duct (20), wherein, the first hydraulic telescopic device (18) is arranged on the driving member (17), the plugging plate (19) is arranged on the driving end of the first hydraulic telescopic device (18), and the air duct (20) is arranged on the plugging plate (19).

7. The steel structure weld detection device according to claim 6, characterized in that, The driving member (17) comprises: a driving chamber (21), a second motor (22), a ball screw (23), a ball slider (24) and an electric telescopic rod (25), wherein the second motor (22) is arranged in the driving chamber (21), the ball screw (23) is arranged on the driving end of the second motor (22), the ball slider (24) is arranged on the ball screw (23), and the ball slider (24) is connected to the hydraulic telescopic device via the electric telescopic rod (25).

8. The steel structure weld detection device according to claim 7, characterized in that, A support rod (26) is provided on the driving chamber (21), and the driving chamber (21) is arranged above the first hydraulic telescopic device (18), and a sealing ring (27) is provided on the blocking plate (19).

9. The steel structure weld detection device according to claim 3, characterized in that, Also includes: A second hydraulic telescopic device (28), a plurality of plates (29) and a plurality of tube support members (30), wherein the plurality of plates (29) and the plurality of tube support members (30) correspond to each other one by one, wherein the support plate (10) is fixedly arranged at the driving end of the second hydraulic telescopic device (28), the tube support member (30) is a V-shaped plate, and the tube support member (30) is arranged on the plate (29) via a threaded connector, and the tube support member (30) is in contact connection with the target steel pipe.

10. The steel structure weld detection device according to claim 3, characterized in that A defective spray marking device (31) is installed on the driving end of the first electric push rod (7).

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