Pipe welding seam detection device

Abstract

The invention discloses a pipe welding seam detection device, and belongs to the technical field of pipe welding seam detection.The pipe welding seam detection device comprises a conveying table, the upper end of the conveying table is movably connected with two symmetrically-distributed moving tables, and a first supporting frame is fixedly connected between the inner walls of the two moving tables; four symmetrically-distributed penetration detection assemblies are installed on the inner wall of the first supporting frame body, a development forming machine is installed on the inner wall of one side of the first supporting frame body, an information transfer device is arranged at the top end of the first supporting frame body, and a ray detection assembly is installed at the upper end of the other side of the conveying table; automatic detection operation can be carried out on pipe welding seams at different positions, the detection operation comprises welding seam surface and depth internal detection items, and the follow-up use quality of pipes is greatly guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe weld detection, and more specifically, to a pipe weld detection device. Background Art

[0002] Pipe welding refers to the process of bending steel strips or steel plates into round, square and other shapes and then welding them into steel pipes with seams on the surface. The blanks used for welded steel pipes are steel plates or strips.

[0003] At present, in pipe welding, it is necessary to weld and connect each pipe in sequence, and the welded pipe fittings are placed statically on a support frame. However, the quality of pipe welds becomes a difficulty in pipeline construction. In order to ensure the welding quality of welds, it is necessary to perform internal defect detection on the welds. Conventional detection is performed by ultrasonic detectors, that is, coupling agent for flaw detection is applied to the welds, and then the welds at that position are detected by manual handheld flaw detectors. This detection method consumes a lot of manpower and causes physical fatigue. For this reason, this scheme proposes a pipe weld detection device. Summary of the invention

[0004] 1. Technical problems to be solved: In view of the problems existing in the prior art, the purpose of the present invention is to provide a pipe weld detection device, which can realize automated detection operations on pipe welds at different positions. Its detection operations include weld surface and deep internal detection matters, which greatly guarantees the subsequent use quality of the pipe.

[0005] 2. Technical solution: To solve the above problems, the present invention adopts the following technical solutions.

[0006] A pipe weld detection device comprises a conveying platform, the upper end of which is movably connected to two symmetrically distributed mobile platforms, a support frame body 1 is fixedly connected between the inner walls of the two mobile platforms, four symmetrically distributed penetration detection components are installed on the inner wall of the support frame body 1, an imaging forming machine is installed on the inner wall of one side of the support frame body 1, an information relay is provided on the top of the support frame body 1, and a radiation detection component is installed on the upper end of the other side of the conveying platform.

[0007] A further improvement is that a rectangular groove is opened at the upper end of one side of the conveying platform, a rack is fixedly connected to the inner wall of one side of the rectangular groove, one end of the rack is meshed with a transmission gear, a motor is installed between the inner walls of one side of the moving platform, and the output end of the motor passes through the bottom of the moving platform and is fixedly connected to the transmission shaft of the transmission gear.

[0008] A further improvement is that a convex groove is provided at the upper end of the other side of the conveying platform, a convex block is provided between the inner walls of the convex groove, and the upper end of the convex block is fixedly connected to the bottom of one side of the moving platform.

[0009] A further improvement is that the penetration detection component includes a plurality of coating parts provided between the inner walls of the support frame body one, a telescopic rod two is installed between the coating parts and the inner wall of the support frame body one, a pipeline is installed through the support frame body one and the penetration detection component, a liquid level sensor is installed on the inner wall of the bottom side of the support frame body one, a delivery pump is installed on the upper end of one side of the mobile platform, one end of the delivery pump passes through the interior of the support frame body one and is interconnected with a plurality of pipelines, and the interior of the support frame body one is filled with a penetrant.

[0010] A further improvement is that the coating component includes four groups of loading shells provided on the inner wall side of a supporting frame, an arc plate is slidably connected between the inner walls of the loading shells, a coating cotton pad is installed at one end of the arc plate, one end of the coating cotton pad passes through the outside of the loading shell, an airbag is installed between the loading shell and the arc plate, a plurality of evenly distributed sealing membranes 1 are embedded at one end of the arc plate, and a sealing membrane 2 is embedded and installed at the outer end of the loading shell.

[0011] A further improvement is that the one-way outlets of the sealing membrane 1 and the sealing membrane 2 are both oriented toward the center of the supporting frame 1.

[0012] A further improvement is that the radiation detection component includes two positioning platforms fixedly connected to the upper end of the other side of the conveying platform, a support frame body 2 is fixedly connected between the inner walls of the two positioning platforms, a radiation detector is installed on the inner wall of the support frame body 2, deformation rings with the same orientation are provided between the inner walls on both sides of the support frame body 2, radiation-proof curtains are fixedly connected between the deformation rings and the inner wall of the support frame body 2, and a digital imaging device is installed on the upper end of the support frame body 2.

[0013] A further improvement is that a plurality of telescopic rods are embedded and installed at the central end of the conveying platform, the telescopic ends of the telescopic rods are fixedly connected to a support plate, and the upper end of the support plate is movably connected to a plurality of evenly distributed balls.

[0014] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is reasonably designed. The pipe is continuously transported between the support frame and the inner wall of the ray detection component through the conveying equipment. During this period, the penetration detection component can be controlled by a single program according to the weld position of the batch of pipes, so as to realize the coating of the weld position of the surface of the batch of pipes with liquid penetrant. After the penetrant is squeezed into the open defect on the surface of the pipe, the penetrant will be displayed at the local defect through the imaging observation of the imaging forming machine, so as to detect whether there is a defect at the weld of the pipe. At this time, the information transfer device transmits the detection information to the terminal so that the personnel can record it. After the weld surface defect detection is completed, the pipe weld is continuously conveyed and then re-inspected inside the radiographic detection component. X-rays or gamma rays are used to penetrate the weld, and defects are observed on the image produced after the rays penetrate the material. The shape and size of the defects inside the weld can be clearly displayed, and further inspection operations can be performed on the weld to ensure the quality of the subsequent use of the pipe.

[0015] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the mobile station transmission of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the penetration detection assembly of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the penetration detection assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the coating member of the present invention; Figure 6 It is a structural schematic diagram of the radiation detection assembly of the present invention.

[0017] Description of the numbers in the figure: 1. Conveying platform; 11. Rectangular slot; 12. Convex slot; 13. Rack; 14. Transmission gear; 15. Convex block; 16. Motor; 2. Mobile platform; 3. Support frame 1; 4. Penetration detection assembly; 41. Coating member; 411. Loading shell; 412. Curved plate; 413. Coated cotton pad; 414. Airbag; 415. Sealing film 1; 416. Sealing film 2; 42. Telescopic rod 2; 43. Pipeline; 44. Liquid level sensor; 45. Delivery pump; 46. Penetrant; 5. Image forming machine; 6. Information transfer device; 7. Radiation detection assembly; 71. Positioning platform; 72. Support frame 2; 73. Radiation detector; 74. Deformation ring; 75. Radiation-proof curtain; 76. Digital imaging equipment; 8. Telescopic rod 1; 9. Support plate; 10. Ball bearing. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0022] See also Figure 1-Figure 6A pipe weld detection device comprises a conveying platform 1, the upper end of the conveying platform 1 is movably connected to two symmetrically distributed moving platforms 2, a supporting frame 3 is fixedly connected between the inner walls of the two moving platforms 2, four symmetrically distributed penetration detection components 4 are installed on the inner wall of the supporting frame 3, an imaging forming machine 5 is installed on the inner wall of one side of the supporting frame 3, an information transfer device 6 is provided on the top of the supporting frame 3, and a radiation detection component 7 is installed on the upper end of the other side of the conveying platform 1.

[0023] During the use of this solution, when it is necessary to perform weld inspection on the welded pipe, the pipe can be continuously transported between the support frame 3 and the inner wall of the ray detection component 7 through the conveying equipment. During this period, the penetration detection component 4 can be controlled by a single program according to the weld position of the batch of pipes, so as to realize the coating of the liquid penetrant on the weld position of the surface of the batch of pipes. After the penetrant is squeezed into the open defect on the surface of the pipe, the penetrant will appear at the local defect through the imaging observation of the imaging forming machine 5, so as to detect whether there is a defect at the weld of the pipe. At this time, the information transfer device 6 transmits the detection information to the terminal for personnel to record. Then, after the weld surface defect detection is completed, after continuous transportation, the pipe weld is again inspected inside the ray detection component 7 for a second time, and X-rays or gamma rays are used to penetrate the weld, and the defects are observed on the image produced after the rays penetrate the material. The shape and size of the defects inside the weld can be clearly displayed, and the weld can be further inspected to ensure the quality of the subsequent use of the pipe.

[0024] See also Figure 1-Figure 2 A rectangular groove 11 is provided at the upper end of one side of the conveying platform 1, a rack 13 is fixedly connected to the inner wall of one side of the rectangular groove 11, one end of the rack 13 is meshedly connected to a transmission gear 14, a motor 16 is installed between the inner walls of one side of the moving platform 2, and the output end of the motor 16 passes through the bottom of the moving platform 2 and is fixedly connected to the transmission shaft of the transmission gear 14.

[0025] More specifically, a convex groove 12 is provided at the upper end of the other side of the conveying platform 1 , a convex block 15 is provided between the inner walls of the convex groove 12 , and the upper end of the convex block 15 is fixedly connected to the bottom of one side of the moving platform 2 .

[0026] During the use of this solution, when it is necessary to continuously inspect the pipes welded after the plate is rolled or the pipes stagnant above the conveyor platform 1, the personnel can drive the transmission gear 14 through the driving motor 16. Since the transmission gear 14 is meshed with one end of the rack 13 and the other end of the movable platform 2 is limited by the linear slide of the convex groove 12, when the motor 16 is driven, the movable platform 2 can perform a lateral displacement operation above the conveyor platform 1, so that the penetration detection component 4 and the imaging forming machine 5 can perform a weld detection operation on the stagnant pipe at this time.

[0027] See also Figure 1 and Figure 3-Figure 5 The penetration detection component 4 includes a plurality of coating members 41 provided between the inner walls of the support frame 3, a telescopic rod 42 is installed between the coating member 41 and the inner wall of the support frame 3, a pipe 43 is installed through the support frame 3 and the penetration detection component 4, a liquid level sensor 44 is installed on the bottom inner wall of the support frame 3, a delivery pump 45 is installed on the upper end of one side of the mobile platform 2, one end of the delivery pump 45 passes through the interior of the support frame 3 and is connected with the plurality of pipes 43, and the interior of the support frame 3 is filled with a penetrant 46.

[0028] More specifically, the coating member 41 includes four groups of loading shells 411 provided on the inner wall side of a supporting frame body 3, an arc plate 412 is slidably connected between the inner walls of the loading shells 411, a coating cotton pad 413 is installed at one end of the arc plate 412, one end of the coating cotton pad 413 passes through the outside of the loading shell 411, an airbag 414 is installed between the loading shell 411 and the arc plate 412, a plurality of evenly distributed sealing films 1 415 are embedded at one end of the arc plate 412, and a sealing film 2 416 is embedded and installed at the outer end of the loading shell 411.

[0029] More specifically, the one-way outlets of the sealing film 1 415 and the sealing film 2 416 are both oriented toward the center of the supporting frame 1 3 .

[0030] During the use of this solution, whether it is testing the weld after the plate is rolled into a round shape or the weld formed by axial butt welding, the personnel can drive the corresponding telescopic rod 2 42 to cause the loading shell 411 to approach one side of the weld. For example, when testing the weld after the plate is rolled into a round shape, the personnel can drive the telescopic rod 2 42 set on the upper side to cause a coating member 41 to apply penetrant liquid to the weld of the pipe. When testing the weld of the pipe formed by axial splicing welding, the personnel can approach the pipe through the coating members 41 in four directions, so as to cover the weld formed in the axial direction, so that the penetrant liquid is coated on the surface of the weld in a circle. When in use, the penetrant 46 in the supporting frame 3 is driven by the delivery pump 45 to deliver the required penetrant 46 to the inside of the loading shell 411 through the pipeline 43. When the pipe weld is to be inspected, the personnel drives the telescopic rod 2 42 to make the loading shell 411 approach one side of the pipe, and then under the resistance force, the coating cotton pad 413 is continuously retracted into the loading shell 411 due to the resistance force. Due to the pressure operation and the airbag 414 set on the side, the penetrant 46 in the loading shell 411 is gradually released to the surface of the coating cotton pad 413 due to the air pressure for adsorption, and then the coating cotton pad 413 coats the penetrant 46 on the surface of the weld to be inspected; During this period, both sealing membrane 1 415 and sealing membrane 2 416 utilize the principle of heart valves, which is the same as the principle of bicycle valve core. There is an inverted hard film at the bottle mouth. Under normal circumstances, it is gathered together and in a closed state without force. After being subjected to external force, the film is forced to open outward to form a channel. That is, when the pipeline 43 is replenishing the penetrant 46, the sealing membrane 2 416 opens toward the center side of the loading shell 411 to form a channel, and when the coated cotton pad 413 is under pressure, its air pressure cannot drive the sealing membrane 2 416 to open outward and maintain a sealed state. Under this pressure, the sealing membrane 1 415 simultaneously opens toward the center side of the loading shell 411 to release the penetrant 46.

[0031] See also Figure 1 and Figure 6 The radiation detection component 7 includes two positioning platforms 71 fixedly connected to the upper end of the other side of the conveying platform 1, a supporting frame 72 is fixedly connected between the inner walls of the two positioning platforms 71, a radiation detector 73 is installed on the inner wall of the supporting frame 72, and a deformation ring 74 with the same orientation is provided between the inner walls of both sides of the supporting frame 72, and a radiation-proof curtain 75 is fixedly connected between the deformation ring 74 and the inner wall of the supporting frame 72, and a digital imaging device 76 is installed on the upper end of the supporting frame 72.

[0032] During the use of this solution, after the surface weld defect detection operation of the pipe is completed, the pipe is continuously transported until it is located on one side of the deformation ring 74. Since the deformation ring 74 is made of flexible material, it can be self-adjusted according to the size of the pipe, so that the pipe that fits the pipe is inside the support frame 72, and the depth of the pipe weld is detected by the ray detector 73. When the ray of the ray detector 73 passes through the material, the density and thickness of the material will affect the attenuation of the ray. Due to the different density, the defect will appear on the digital imaging device 76 and be synchronously transmitted to the terminal for data collection. In this embodiment, when the pipe weld is inspected inside the radiation detector 73, the radiation-proof curtain 75 is fully covered to block and shield the X-rays or gamma rays generated by the radiation detector 73, thereby reducing radiation damage to operators and ensuring the safety of the equipment when in use. See also Figure 1 A plurality of telescopic rods 8 are embedded and installed at the central end of the conveying platform 1, and the telescopic ends of the telescopic rods 8 are fixedly connected to a support plate 9, and the upper end of the support plate 9 is movably connected to a plurality of evenly distributed balls 10.

[0033] During use of the present solution, during the transportation of the pipe, the telescopic rod 8 can automatically rise and fall in height under the control of a single program, thereby supporting the transported pipe, and at the same time, under the action of the ball 10, the friction between the two can be reduced to ensure smooth transportation of the pipe. When the support frame 3 is translated, the telescopic rod 8 can be raised and lowered one by one, so that after the support frame 3 passes above the support plate 9, the telescopic rod 8 again prompts the ball 10 to rise, thereby achieving stable support for the pipe.

[0034] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A pipe weld inspection device, comprising a conveyor platform (1), characterized in that: The upper end of the conveying platform (1) is movably connected to two symmetrically distributed moving platforms (2); a support frame (3) is fixedly connected between the inner walls of the two moving platforms (2); four symmetrically distributed penetration detection components (4) are installed on the inner wall of the support frame (3); an imaging forming machine (5) is installed on the inner wall of one side of the support frame (3); an information transfer device (6) is provided at the top of the support frame (3); and a radiation detection component (7) is installed on the upper end of the other side of the conveying platform (1).

2. A pipe weld detection device according to claim 1, characterized in that: A rectangular groove (11) is provided at the upper end of one side of the conveying platform (1), a rack (13) is fixedly connected to an inner wall of one side of the rectangular groove (11), one end of the rack (13) is meshingly connected to a transmission gear (14), a motor (16) is installed between the inner walls of one side of the moving platform (2), and an output end of the motor (16) passes through the bottom of the moving platform (2) and is fixedly connected to a transmission shaft of the transmission gear (14).

3. A pipe weld detection device according to claim 2, characterized in that: A convex groove (12) is provided at the upper end of the other side of the conveying platform (1), a convex block (15) is provided between the inner walls of the convex groove (12), and the upper end of the convex block (15) is fixedly connected to the bottom of the movable platform (2) on one side.

4. A pipe weld detection device according to claim 1, characterized in that: The penetration detection component (4) comprises a plurality of coating members (41) provided between the inner walls of the support frame body (3), a telescopic rod (42) is installed between the coating member (41) and the inner wall of the support frame body (3), a pipeline (43) is installed between the support frame body (3) and the penetration detection component (4), a liquid level sensor (44) is installed on the inner wall of the bottom side of the support frame body (3), a delivery pump (45) is installed on the upper end of one side of the mobile platform (2), one end of the delivery pump (45) passes through the interior of the support frame body (3) and is connected to the plurality of pipelines (43), and the interior of the support frame body (3) is filled with a penetrant (46).

5. A pipe weld detection device according to claim 4, characterized in that: The coating member (41) comprises four groups of loading shells (411) provided on the inner wall side of a supporting frame body (3); an arc plate (412) is slidably connected between the inner walls of the loading shells (411); a coating cotton pad (413) is installed at one end of the arc plate (412); one end of the coating cotton pad (413) passes through the outside of the loading shell (411); an air bag (414) is installed between the loading shell (411) and the arc plate (412); a plurality of evenly distributed sealing films (415) are embedded at one end of the arc plate (412); and a sealing film (416) is embedded and installed at the outer end of the loading shell (411).

6. A pipe weld detection device according to claim 5, characterized in that: The one-way outlets of the sealing film 1 (415) and the sealing film 2 (416) are both oriented toward the center of the supporting frame 1 (3).

7. A pipe weld detection device according to claim 1, characterized in that: The radiation detection assembly (7) comprises two positioning platforms (71) fixedly connected to the upper end of the other side of the conveying platform (1); a second support frame (72) is fixedly connected between the inner walls of the two positioning platforms (71); a radiation detector (73) is installed on the inner wall of the second support frame (72); a deformation ring (74) arranged in the same direction is provided between the inner walls on both sides of the second support frame (72); a radiation-proof curtain (75) is fixedly connected between the deformation ring (74) and the inner wall of the second support frame (72); and a digital imaging device (76) is installed on the upper end of the second support frame (72).

8. A pipe weld detection device according to claim 1, characterized in that: A plurality of telescopic rods (8) are embedded and installed at the central end of the conveying platform (1); the telescopic ends of the telescopic rods (8) are fixedly connected to support plates (9); and the upper ends of the support plates (9) are movably connected to a plurality of evenly distributed balls (10).

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