A kind of copper-steel composite tube plate welding gap quality detection device

Abstract

This invention belongs to the field of weld gap quality inspection technology and discloses a weld gap quality inspection device for copper-steel composite tube sheets. The device includes a circular plate and a column. The column is equipped with a power unit for driving the circular plate to rotate. Grooves are uniformly arranged circumferentially on the column. An elastic element and a slotted block are movably arranged within the grooves. The slotted block extends to the outside of the groove and has a receiving groove and an opening groove. A plate portion is formed near the opening groove on the slotted block. An inclined portion and a positioning portion are formed on the outer edge of the slotted block, with the positioning portion located between the inclined portion and the plate portion. A detection probe is slidably mounted radially on the circular plate and connected to an external detector. The detection probe has an integral elongated portion and a rotatable roller. The axis of the roller is parallel to the radial direction of the circular plate. A cover plate is fixed on the circular plate. This invention allows the installed detection probe to face the weld gap directly and provides protection for the detection probe when not in use.

Description

Technical Field

[0001] This invention belongs to the field of weld gap quality inspection technology, specifically a weld gap quality inspection device for copper-steel composite tube sheets. Background Technology

[0002] Copper-steel composite tube sheets are commonly used in heat exchange equipment. During installation, heat exchange tubes are inserted into the tube holes of the copper-steel composite tube sheet, and then the two are welded together. The weld seams need to be inspected using a quality inspection device to ensure weld quality. Sometimes, after the first inspection, a second sampling inspection is required to further improve the quality of the weld seam inspection. The usual method is to manually scan the weld seam between the copper-steel composite tube sheet and the heat exchange tubes using a probe. This inspection method is laborious, and because it relies on manual labor, the inspection process is not stable and can easily lead to a decline in inspection quality. Therefore, there is a need for an automated weld seam quality inspection device. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a welding gap quality inspection device for copper-steel composite tube sheets, which effectively solves the problem that relying on manual labor results in an unstable inspection process and a decline in inspection quality.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a welding gap quality inspection device for copper-steel composite tube sheets, comprising a circular plate and a column. The column is provided with a power unit for driving the circular plate to rotate. The column is uniformly provided with grooves along its circumference. An elastic element and a groove block are movably provided in the grooves. The groove block extends to the outside of the groove. The groove block is provided with a receiving groove and an opening groove. A plate part is formed on the groove block near the opening groove. An inclined part and a positioning part are formed on the outer edge of the groove block. The positioning part is located between the inclined part and the plate part. A detection probe is slidably provided on the circular plate along its radial direction. The detection probe is connected to an external detector. The detection probe is provided with an integral elongated part and a rotatable roller. The axis of the roller is parallel to the radial direction of the circular plate. A cover plate is fixed on the circular plate. When not in operation, under the action of the elastic element, the plate part on the groove block and the cover plate on the circular plate align together to seal the groove. At this time, the detection probe is located in the receiving groove. When in operation, when the groove block is pressed, the plate part on the groove block pushes the elongated part on the detection probe. At this time, the detection probe is located outside the receiving groove.

[0005] Preferably, the power unit includes a power motor, which is fixed inside the column, and the output shaft of the power motor is fixed to the circular plate; and an auxiliary tube is fixed on the circular plate.

[0006] Preferably, a tapered portion is formed at the end of the column away from the circular plate.

[0007] Preferably, the elastic element includes a telescopic spring located between the axis of the groove block and the column.

[0008] Preferably, a slider is fixed on the detection probe, and a groove is provided on the circular plate, so that the slider slides and the groove is damped.

[0009] Preferably, an inner magnetic block is fixed inside the slider, and a strip plate is fixed inside the groove, with the inner magnetic block and the strip plate magnetically attracted to each other.

[0010] Preferably, an electromagnet is fixed on the plate portion, and the electromagnet is magnetically attracted to the long strip portion.

[0011] Preferably, the groove, elastic element, slot block, detection probe and cover plate are arranged in a one-to-one correspondence, and each is provided in threes.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] During operation, the column is fixed inside the pipe by using elastic elements and groove blocks. It can automatically center the pipes of different diameters. The groove blocks drive the detection probe, which can ensure that the installed detection probe is aligned with the weld gap within a certain range without additional adjustment, which is quite convenient. When not in use, the detection probe can be placed inside the receiving groove and protected by the cover plate. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the welding gap quality detection device for a copper-steel composite tube sheet according to the present invention.

[0017] Figure 2 This is a schematic diagram of the mating structure of the circular plate and the cylinder of the present invention;

[0018] Figure 3 For the present invention Figure 2 A three-dimensional sectional view of the structure;

[0019] Figure 4 For the present invention Figure 2 A schematic diagram of the planar sectional structure;

[0020] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the groove block under stress according to the present invention;

[0022] Figure 7 For the present invention Figure 6 Mid-plane sectional view of the structure;

[0023] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0024] Figure 9 This is a schematic diagram of the slot block structure of the present invention;

[0025] Figure 10 This is a schematic diagram of the detection probe structure of the present invention.

[0026] In the diagram: 1. Circular plate; 2. Column; 3. Groove; 4. Slot block; 5. Receiving groove; 6. Opening slot; 7. Plate section; 8. Inclined section; 9. Positioning section; 10. Detection probe; 11. Long strip section; 12. Roller; 13. Cover plate; 14. Power motor; 15. Auxiliary tube; 16. Conical section; 17. Telescopic spring; 18. Slider; 19. Slide groove; 20. Inner magnetic block; 21. Strip plate; 22. Electromagnet; 23. Tube sheet; 24. Tube body. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Depend on Figures 1-10 The present invention relates to a welding gap quality inspection device for copper-steel composite tube sheet, comprising a circular plate 1 and a column 2. The column 2 is provided with a power unit for driving the circular plate 1 to rotate. Grooves 3 are uniformly provided on the column 2 along the circumference. An elastic element and a groove block 4 are movably provided in the grooves 3. The groove block 4 extends to the outside of the groove 3. The groove block 4 is provided with a receiving groove 5 and an opening groove 6. A plate part 7 is formed on the groove block 4 near the opening groove 6. An inclined part 8 and a positioning part 9 are formed on the outer edge of the groove block 4. The positioning part 9 is located between the inclined part 8 and the plate part 7. A detection probe 10 is slidably provided on the circular plate 1 along its radial direction. The detection probe 10 is connected to an external detector. The detection probe 10 is provided with an integral elongated part 11 and a rotatable roller 12. The axis of the roller 12 is parallel to the radial direction of the circular plate 1. A cover plate 13 is fixed on the circular plate 1.

[0029] When not in operation, under the action of the elastic element, the plate part 7 on the groove block 4 and the cover plate 13 on the round plate 1 are connected to seal the groove 3 together, and the detection probe 10 is located in the receiving groove 5. When in operation, when the groove block 4 is pressed, the plate part 7 on the groove block 4 pushes the long strip part 11 on the detection probe 10, and the detection probe 10 is located outside the receiving groove 5.

[0030] With this design, when it is necessary to inspect the quality of the weld gap between the tube sheet 23 and the tube body 24, it is only necessary to insert the column 2 into the inside of the tube body 24. The specific process is as follows:

[0031] Under the guidance of the inclined part 8 on the groove block 4, the groove block 4 and the column 2 can more easily enter the interior of the tube 24. Then, under the pressure of the inner wall of the tube 24, the groove block 4 compresses the elastic element and partially shrinks into the interior of the groove 3. Since there are multiple grooves 3, under the action of the elastic element in each groove 3, the positioning part 9 on the groove block 4 abuts against the inner wall of the tube 24, thereby realizing the center fixing operation of the column 2.

[0032] During this process, as the groove block 4 moves and retracts into the groove 3, the plate part 7 on the groove block 4 pushes the long strip part 11 on the detection probe 10, causing the detection probe 10 to move in the same direction. Finally, when the positioning part 9 on the groove block 4 abuts against the inner wall of the tube body 24, the detection probe 10 on the circular plate 1 also moves out of the receiving groove 5 and is located near the outer wall of the groove block 4. At this time, the detection probe 10 is facing the welding seam.

[0033] As the column 2 gradually enters the interior of the tube 24, the roller 12 on the detection probe 10 comes into contact with the weld gap. At this point, the column 2 stops moving. Then, the power unit drives the circular plate 1 to rotate, and the circular plate 1 drives the detection probe 10 on it to rotate one or several times to perform the detection operation. This realizes the automatic detection process of the weld gap, which is quite convenient.

[0034] It should be noted that the tube sheet 23 is a copper-steel composite tube sheet, the tube body 24 is a heat exchange tube, and the detector can be an eddy current flaw detector or an ultrasonic detector, etc. The setting of the opening slot 6 makes the long strip 11 on the detection probe 10 no longer restricted during circumferential movement, so as to ensure that the circumferential movement of the detection probe 10 is carried out smoothly.

[0035] This device uses an elastic element and a groove block 4 to fix the column 2 inside the tube 24, which can automatically center the tube 24 for different diameters. The groove block 4 drives the detection probe 10, which can ensure that the installed detection probe 10 is aligned with the weld gap within a certain range without additional adjustment, which is convenient. When not in use, the detection probe 10 can be located inside the receiving groove 5, and with the encapsulation of the cover plate 13, the detection probe 10 can be protected.

[0036] Specifically, the power unit includes a power motor 14, which is fixed inside the column 2. The output shaft of the power motor 14 is fixed to the circular plate 1, and an auxiliary tube 15 is fixed on the circular plate 1. With this design, the power motor 14 drives the circular plate 1 to rotate, and the circular plate 1 drives the detection probe 10 on it to rotate, so that the annular weld gap can be inspected through the detection probe 10, which is quite convenient. The power motor 14 can be a stepper motor or other motors with built-in reducers. The auxiliary tube 15 makes it easy for workers to hold the device.

[0037] Specifically, a tapered portion 16 is formed at the end of the column 2 away from the circular plate 1. This design facilitates the entry of the column 2 into the interior of the tube 24 through the tapered portion 16.

[0038] Specifically, the elastic element includes a telescopic spring 17, which is located between the axis of the groove block 4 and the column 2.

[0039] Specifically, a slider 18 is fixed on the detection probe 10, and a groove 19 is provided on the circular plate 1. The slider 18 slides and engages with the groove 19 in a damping manner. With this design, when the detection probe 10 is not under force, the damping engagement between the slider 18 and the groove 19 can keep the detection probe 10 stably in a fixed position.

[0040] A specific damping engagement method is provided between the slider 18 and the slide groove 19: an inner magnetic block 20 is fixed inside the slider 18, and a strip plate 21 is fixed inside the slide groove 19. The inner magnetic block 20 and the strip plate 21 are magnetically attracted to each other. With this design, the magnetic attraction of the inner magnetic block 20 to the strip plate 21 can keep the detection probe 10 stably in a fixed position; the strip plate 21 is made of a magnetically attracted material, such as iron.

[0041] Considering that the detection probe 10 needs to return to its original position after the detection is completed, there are various ways to do this. It can be adjusted manually, or multiple detection probes 10 can be driven back to their original positions simultaneously by setting up a corresponding mechanism. Here is a specific feasible method:

[0042] An electromagnet 22 is fixed on the plate portion 7, and the electromagnet 22 is magnetically attracted to the elongated portion 11. With this design, when the plate portion 7 on the slot block 4 pushes the elongated portion 11 on the detection probe 10, the electromagnet 22 is not working; when the detection probe 10 needs to be reset after the detection is completed, the electromagnet 22 is working. Under the magnetic attraction of the electromagnet 22, the elongated portion 11 is driven and then returned to its original position after being blocked by the cover plate 13, and then the electromagnet 22 is deactivated; the elongated portion 11 is made of a magnetically attracted material, such as iron.

[0043] Specifically, the groove 3, elastic element, slot block 4, detection probe 10 and cover plate 13 are set one-to-one, and the corresponding quantity can be set according to actual needs. Here, it is set to three.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of copper-steel composite tube plate welding gap quality detection device, including round plate (1) and cylinder (2), cylinder (2) is equipped with the power unit for driving round plate (1) rotation, it is characterized in that: The column (2) is uniformly provided with grooves (3) along the circumference. An elastic element and a slot block (4) are movably provided in the groove (3). The slot block (4) extends to the outside of the groove (3). The slot block (4) is provided with a receiving groove (5) and an opening groove (6). A plate part (7) is formed near the opening groove (6) on the slot block (4). An inclined part (8) and a positioning part (9) are formed on the outer edge of the slot block (4). The positioning part (9) is located between the inclined part (8) and the plate part (7). A detection probe (10) is slidably provided on the circular plate (1) along its radial direction. The detection probe (10) is connected to an external detector. The detection probe (10) is provided with an integral long strip part (11) and a rotatable roller (12). The axis of the roller (12) is parallel to the radial direction of the circular plate (1). A cover plate (13) is fixed on the circular plate (1). When not in operation, under the action of the elastic element, the plate body (7) on the groove block (4) and the cover plate (13) on the round plate (1) are connected to seal the groove (3) together. At this time, the detection probe (10) is located in the receiving groove (5). When the slot block (4) is pressed, the plate part (7) on the slot block (4) pushes the long strip part (11) on the detection probe (10). At this time, the detection probe (10) is located outside the receiving slot (5). Under the guidance of the inclined part (8) on the groove (4), the groove (4) and the column (2) enter the interior of the tube (24). Then, under the pressure of the inner wall of the tube (24), the groove (4) compresses the elastic element and partially shrinks into the interior of the groove (3). Under the action of the elastic element in each groove (3), the positioning part (9) on the groove (4) abuts against the inner wall of the tube (24), thereby achieving the center fixing operation of the column (2). During this period, the plate part (7) on the slot block (4) pushes the long strip part (11) on the detection probe (10), causing the detection probe (10) to move in the same direction. Finally, when the positioning part (9) on the slot block (4) abuts against the inner wall of the tube body (24), the detection probe (10) on the circular plate (1) also moves out of the receiving slot (5) and is located near the outer wall of the slot block (4). At this time, the detection probe (10) is facing the weld seam. As the column (2) enters the interior of the tube (24), the roller (12) on the detection probe (10) comes into contact with the weld seam. At this time, the column (2) stops moving. Then, the power unit drives the circular plate (1) to rotate. The circular plate (1) drives the detection probe (10) on it to rotate and perform the detection operation.

2. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: The power unit includes a power motor (14), which is fixed inside the column (2). The output shaft of the power motor (14) is fixed to the circular plate (1), and an auxiliary tube (15) is fixed on the circular plate (1).

3. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: A tapered portion (16) is formed at one end of the column (2) away from the circular plate (1).

4. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: The elastic element includes a telescopic spring (17) located between the axis of the slot block (4) and the column (2).

5. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: The detection probe (10) is fixed with a slider (18), and the circular plate (1) is provided with a groove (19). The slider (18) slides and is damped in the groove (19).

6. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 5, characterized in that: The slider (18) has an inner magnetic block (20) fixed inside, and the groove (19) has a strip plate (21) fixed inside. The inner magnetic block (20) and the strip plate (21) are magnetically attracted to each other.

7. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: An electromagnet (22) is fixed on the plate part (7), and the electromagnet (22) is magnetically attracted to the long strip part (11).

8. The welding gap quality inspection device for copper-steel composite tube sheet according to claim 1, characterized in that: The groove (3), elastic element, slot block (4), detection probe (10) and cover plate (13) are arranged in a one-to-one correspondence, and each of them is provided in threes.

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