A quality inspection device based on ship welds
By designing a ship weld detection device that can be combined with internal extrusion and a driven mechanism, the problem of the existing technology being unable to detect a longer length or being unable to block the pipeline is solved, and a wider detection range and more efficient detection are achieved Efficiency, the welds can be quality-tested and cleaned without blocking both ends of the pipe, and the welds are directly judged by observing the foam water.
Patent Information
- Application Number
- CN202411328080.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-24
AI Technical Summary
The existing ship weld detection devices cannot effectively detect long-length pipes or unsealable pipes, and the detection range is narrow and cannot meet actual needs.
A quality detection device based on ship welds is designed, using internal extrusion and air blowing to drive the thrust pressure plate movement, combined with the driven mechanism to realize the synchronous movement of the outer ring, so that the inside of the pipe can be carried out without blocking both ends of the pipe. Seal and inflate, and clean the weld surface and apply foam water during the inspection process. Quickly judge the quality of the weld by observing whether the foam water produces foam.
Weld quality inspection of pipes of different lengths and cannot be sealed is achieved, the detection range is expanded, the detection efficiency and accuracy is improved, and it can be sealed and inflated at any position inside the pipe, and welding is carried out simultaneously during sealing. Seam cleaning and foam water application, directly observe the foam method to judge the airtightness of the weld.
Smart Images
Figure CN118837042B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ship weld detection, and in particular to a quality detection device based on ship welds. Background Art
[0002] Ships refer to man-made vehicles that can sail or anchor on the water and carry out transportation or operations. Pipes in ships are mainly connected and fixed by welding. After the welding of the pipelines is completed, quality inspection devices are usually used to inspect the welds on the pipelines to determine whether the quality of the welds is qualified;
[0003] When inspecting the welds on the pipeline, the existing quality inspection device usually seals both ends of the pipeline first, and then inflates the pipeline to perform air tightness inspection. This inspection method can only inspect pipelines with a shorter length. If the pipeline is longer or other components are installed at the end of the pipeline so that it cannot be sealed, the existing device cannot perform air inflation inspection on the pipeline. The overall scope of application is narrow and has certain limitations.
[0004] Therefore, it is urgent to design a quality inspection device based on ship welds to solve the above problems. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a quality inspection device based on ship welds, which solves the problems raised in the above background technology.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a quality inspection device based on ship welds, comprising a positioning cover mounted on a welded copper pipe, and the welded copper pipe has two welds to be inspected;
[0007] The detection and adjustment part is used to adjust the detection position on the welding copper tube. The detection and adjustment part includes a gas storage tube rotatably mounted on the positioning cover, and a sealing pressure plate that is rotatably mounted on the gas storage tube and is pressed and fitted with the inner wall of the welding copper tube. A push rod is mounted on the gas storage tube through an air blowing mechanism, and a push pressure plate is mounted on the push rod through a positioning mechanism. A rubber positioning ring is fixedly mounted on the inner wall of the positioning cover;
[0008] The airtight detection unit is used to perform airtightness detection on the welding seam on the welded copper tube. The airtight detection unit includes two air-filled tubes fixedly mounted on the sealing pressure plate, and the two air-filled tubes are connected to the air storage tube. Sealing mechanisms are installed in the two air-filled tubes. An outer ring is fixedly mounted on the positioning cover through a plurality of supporting spring rods, and a driven mechanism is installed between the outer ring and the push pressure plate. Two coating mechanisms are installed on the outer ring.
[0009] Preferably, the inflation mechanism comprises a push plate slidably mounted in the air storage pipe, and a push rod is fixedly mounted on the push plate, and an air inlet and outlet structure is mounted on the air storage pipe.
[0010] Preferably, the air inlet and outlet structure includes an air inflation pipe fixedly connected to the air storage pipe and two air intake pipes, an air inflation disk is slidably installed in the air inflation pipe, and a control handle is slidably installed between the air inflation disk and the air inflation pipe, an air leakage pipe is fixedly connected to the air storage pipe, and control valves are installed in the air leakage pipe and the two air intake pipes, and a handle is fixedly installed on the lower part of the air inflation pipe.
[0011] Preferably, the positioning mechanism includes a limiting cam fixedly mounted on the push rod, a built-in cavity is opened in the push pressure plate, an extrusion rubber ring is fixedly mounted on the outer side of the push pressure plate, and an air supply pipe is fixedly connected between the extrusion rubber ring and the built-in cavity, an air pressure plate is slidably mounted in the built-in cavity, a limiting spring is rotatably mounted on the air pressure plate, and the limiting spring is fixedly mounted on the limiting cam, a limiting cam groove is opened in the push pressure plate, and the limiting cam groove is connected to the built-in cavity.
[0012] Preferably, the blocking mechanism comprises an elastic frame fixedly mounted on the inflation tube, a piston disc is fixedly mounted on the elastic frame, and the piston disc is pressed and fitted against the inner wall of the inflation tube.
[0013] Preferably, the driven mechanism includes two strong magnets fixedly mounted inside the outer ring, and the two strong magnets are in contact with the outer wall of the welded copper tube. A magnet ring is fixedly mounted on the push pressure plate, and the two strong magnets are matched with the magnet ring. A distance measuring structure is installed between the outer ring and the positioning cover.
[0014] Preferably, the distance measuring structure comprises a fixing frame fixedly mounted on the positioning cover, a distance measuring tape is arranged on the fixing frame, and a zero scale end of the distance measuring tape is fixedly connected to the outer sleeve ring.
[0015] Preferably, the coating mechanism includes a coating box fixedly mounted on the outer ring, a middle bottom plate fixedly mounted in the coating box, and the upper part of the middle bottom plate in the coating box is filled with foam water, an extrusion structure is mounted in the coating box, and a feeding structure is mounted on the coating box.
[0016] Preferably, the extrusion structure includes a movable pressure plate slidably installed in the smear box, and two telescopic limit rods are fixedly installed between the movable pressure plate and the top wall of the smear box, a threaded adjustment rod is threadedly installed in the smear box, and the lower end of the threaded adjustment rod is rotatably connected to the movable pressure plate, and a replenishing pipe for replenishing foam water is fixedly connected to the smear box.
[0017] Preferably, the feeding structure comprises a discharge pipe fixedly connected to the middle bottom plate, and a discharge valve is installed in the discharge pipe, a smear wheel matching with the welding seam is rotatably installed in the smear box, and the upper part of the smear wheel is located in the smear box, and a cleaning sponge block matching with the welding seam is fixedly installed in the lower part of the smear box;
[0018] A detection camera for observing the welding seam is fixedly mounted on the smear box, and a control panel matched with the detection camera is fixedly mounted on the positioning cover.
[0019] The present invention provides a quality inspection device based on ship welds. It has the following beneficial effects:
[0020] 1. When the quality inspection device is inspecting the quality of the pipeline weld, the push plate can be driven to move inside the pipeline by adopting the internal extrusion and air blowing method, so that any position inside the pipeline can be blocked, that is, the inside of the pipeline can be sealed without blocking both ends of the pipeline, so that the device can inspect the pipeline even when the pipeline is long or both ends of the pipeline cannot be blocked, and the inspection range is wider.
[0021] 2. When the quality inspection device is used to inspect the quality of pipeline welds, it can seal the inside of the pipeline and realize the synchronous movement of the outer sleeve by means of the cooperation of the driven mechanism. It can also clean the surface of the weld on the outside of the pipeline and apply foam water during the movement, which can keep synchronization with the sealing length of the pipeline, avoid application deviation, and improve the overall efficiency of quality inspection.
[0022] 3. When this quality inspection device is conducting quality inspection on pipeline welds, after the inside of the pipeline is sealed and the push plate cannot move, the gas generated by continuing to blow air will be transmitted to the inside of the sealed pipeline, so that the inside of the pipeline can be quickly inflated. At the same time, the foam water applied to the weld can be observed from the outside. By observing whether foam is generated on the foam water and the location of the foam, it is possible to quickly determine whether the quality of the pipeline weld is qualified, and the location of unqualified welds can be marked to facilitate later repairs and achieve better inspection results.
[0023] In summary, the present invention can perform weld quality inspection on pipes of different lengths and pipes that cannot be sealed at both ends, and has a wider inspection range. The same set of devices can be used to achieve sealing at any position inside the pipe, and to inflate the inside of the pipe after sealing. The pipe weld can also be cleaned and coated with foam water while sealing. During inspection, the present invention can judge the air tightness of the weld by directly observing whether foam appears on the weld, and the inspection efficiency is higher and the inspection result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:
[0025] Figure 1 This is a schematic diagram of the structure of a quality inspection device based on ship welds proposed by the present invention;
[0026] Figure 2 for Figure 1 A front view of
[0027] Figure 3 for Figure 2 A cross-sectional view of the middle AA;
[0028] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure;
[0029] Figure 5 for Figure 1 Schematic diagram of the middle positioning cover and its upper structure;
[0030] Figure 6 for Figure 5 Schematic diagram of the connection structure between the middle and outer sleeve rings and the positioning cover;
[0031] Figure 7 for Figure 6 Schematic diagram of the upper structure of the medium distance measuring tape;
[0032] Figure 8 for Figure 6 Schematic diagram of the upper structure of the middle smear box;
[0033] Fig. 9 for Figure 8 Schematic diagram of the internal structure of the smear box;
[0034] Fig.10 for Figure 5 Schematic diagram of the structure after removing the positioning cover and the upper structure of the outer sleeve ring;
[0035] Fig.11 for Fig.10 Schematic diagram of the internal structure of the central air storage pipe and the air blowing pipe;
[0036] Fig.12 for Fig.10 Schematic diagram of the structural decomposition after removing the sealing pressure plate.
[0037] In the figure: 1 welding copper tube, 2 positioning cover, 3 welding seam, 4 outer ring, 5 gas storage pipe, 6 intake pipe, 7 control panel, 8 control handle, 9 support spring rod, 10 distance measuring tape, 11 strong magnet, 12 smear box, 13 inflation pipe, 14 vent pipe, 15 blocking pressure plate, 16 push pressure plate, 17 rubber positioning ring, 18 push rod, 19 built-in cavity, 20 gas plate, 21 fixed frame, 22 limit spring, 23 smear wheel, 24 cleaning sponge block, 25 detection camera, 26 replenishing pipe, 27 middle bottom plate, 28 movable pressure plate, 29 discharge pipe, 30 telescopic limit rod, 31 threaded adjustment rod, 32 inflation pipe, 33 elastic frame, 34 piston plate, 35 push plate, 36 gas plate, 37 limit convex plate, 38 limit convex groove. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0039] Reference Figure 1 A quality inspection device based on ship welds includes a positioning cover 2 that is snap-fitted onto a welded copper tube 1. The positioning cover 2 can be sleeved onto one end of the welded copper tube 1 to perform preliminary fixation between the welded copper tube 1, and the welded copper tube 1 has two welds 3 to be inspected.
[0040] Reference Figure 1-5 as well as Figure 10-12 The detection adjustment part is used to adjust the detection position on the welded copper tube 1, so as to seal any position inside the welded copper tube 1. According to actual detection requirements, air tightness detection can be performed on different areas inside the welded copper tube 1 to increase the detection range.
[0041] The detection and adjustment part includes an air storage tube 5 rotatably mounted on the positioning cover 2, and a sealing pressure plate 15 is rotatably mounted on the air storage tube 5 and is pressed and fitted with the inner wall of the welded copper tube 1. The outer side of the sealing pressure plate 15 is made of elastic rubber material and can fit tightly with the inner wall of the welded copper tube 1, so as to seal the initial port on the welded copper tube 1.
[0042] In a further embodiment, a push rod 18 is installed on the air storage pipe 5 through an air blowing mechanism, the air blowing mechanism includes a push plate 35 slidably installed in the air storage pipe 5, and the push rod 18 is fixedly installed on the push plate 35, an air inlet and outlet structure is installed on the air storage pipe 5, and the air inlet and outlet structure includes an air blowing pipe 13 fixedly connected to the air storage pipe 5 and two air inlet pipes 6, an air blowing plate 36 is slidably installed in the air blowing pipe 13, and a control handle 8 is slidably installed between the air blowing plate 36 and the air blowing pipe 13;
[0043] The air storage pipe 5 is fixedly connected with an air release pipe 14, and the air in the air storage pipe 5 can be discharged by opening the air release pipe 14. The air release pipe 14 and the two air inlet pipes 6 are both equipped with control valves, which are one-way valves for controlling the connection state and the air inlet and outlet directions of the air release pipe 14. A handle is fixedly installed at the lower part of the air inflation pipe 13, and the operator can hold the control handle 8 with one hand and the handle with the other hand, which is easier to operate.
[0044] When inflating, the operator can hold the control handle 8 and drive the inflation plate 36 to move rightward in the inflation pipe 13 ( Fig.11 As shown in the direction, the external air can be sucked into the air storage pipe 5 through the two air intake pipes 6. When the control handle 8 drives the air blower plate 36 to move left, the air in the air blower pipe 13 and the air storage pipe 5 will be squeezed, thereby pushing the push plate 35 and the push rod 18 to move inward ( Fig.11 By repeating the above steps and reciprocating the air blowing disc 36 left and right, the external air can be continuously pressed into the air storage pipe 5, and the push rod 18 is pushed inward.
[0045] In a further embodiment, a push platen 16 is installed on the push rod 18 through a positioning mechanism, the positioning mechanism includes a limiting convex plate 37 fixedly installed on the push rod 18, a built-in cavity 19 is opened in the push platen 16, an extrusion rubber ring is fixedly installed on the outer side of the push platen 16, and an air supply pipe is fixedly connected between the extrusion rubber ring and the built-in cavity 19, a gas pressure plate 20 is slidably installed in the built-in cavity 19, a limiting spring 22 is rotatably installed on the gas pressure plate 20, and the limiting spring 22 is fixedly installed on the limiting convex plate 37, a limiting convex groove 38 is opened in the push platen 16, and the limiting convex groove 38 is connected to the built-in cavity 19;
[0046] A rubber positioning ring 17 is fixedly mounted on the inner wall of the positioning cover 2. The rubber positioning ring 17 has a certain elasticity, which can make the connection between the positioning cover 2 and the welded copper tube 1 more stable and tight.
[0047] The initial position of the limiting convex plate 37 is in contact with the outer surface of the push plate 16, and there is an angle difference with the limiting convex groove 38. At this time, when the push rod 18 moves, it will move through the limiting convex plate 37 and the push plate 16, so that the push plate 16 can be pushed to move quickly inside the welding copper tube 1, so that the sealing length inside the welding copper tube 1 can be flexibly changed;
[0048] When the push plate 16 is moved, the operator can rotate the gas storage tube 5 as a whole on the outside, and the rotation of the gas storage tube 5 will drive the push plate 35, the push rod 18 and the limiting convex plate 37 to rotate as a whole, until the limiting convex plate 37 rotates to match the limiting convex groove 38 in the push plate 16. At this time, when the push rod 18 continues to move inward, it will drive the limiting convex plate 37 to move inward and enter the limiting convex groove 38, and will squeeze the limiting spring 22 and the gas pressure plate 20 in the built-in cavity 19, and the pressure When the air disc 20 is squeezed, it will move inwards to squeeze the air in the built-in cavity 19, so that the air in the built-in cavity 19 enters the extrusion rubber ring through the air supply pipe. At this time, the air in the extruded rubber ring increases and expands, thereby squeezing the inner wall of the welded copper tube 1, thereby increasing the friction between the push pressure plate 16 and the inner wall of the welded copper tube 1, and finally making the friction resistance greater than the moving thrust of the push pressure plate 16. At this time, the push pressure plate 16 cannot move when the inflation continues, thereby sealing the inside of the welded copper tube 1.
[0049] Reference Figure 1 as well as Figure 5-Figure 9 , an airtightness detection unit, which is used to detect the airtightness of the welding seam 3 on the welded copper tube 1, so as to determine whether there is a gap on the welding seam 3 and the position of the gap;
[0050] The airtight detection part includes two inflatable tubes 32 fixedly mounted on the blocking pressure plate 15, an outer sleeve ring 4 is fixedly mounted on the positioning cover 2 through a plurality of supporting spring rods 9, and a driven mechanism is installed between the outer sleeve ring 4 and the push pressure plate 16, the driven mechanism includes two strong magnets 11 fixedly mounted inside the outer sleeve ring 4, and the two strong magnets 11 are both in contact with the outer wall of the welded copper tube 1, and a magnet ring is fixedly mounted on the push pressure plate 16, and the two strong magnets 11 are both matched with the magnet ring;
[0051] There is a strong magnetic attraction between the two strong magnets 11 and the magnet ring. When the push plate 16 and the magnet ring move inside the welded copper tube 1, the two strong magnets 11 will move synchronously outside the welded copper tube 1 under the action of the magnetic attraction, thereby driving the outer ring 4 to move outside the welded copper tube 1.
[0052] A distance measuring structure is installed between the outer ring 4 and the positioning cover 2, and the distance measuring structure includes a fixing frame 21 fixedly installed on the positioning cover 2, and a distance measuring tape 10 is arranged on the fixing frame 21, and the zero scale end of the distance measuring tape 10 is fixedly connected to the outer ring 4. When the outer ring 4 moves outside the welded copper tube 1, the distance measuring tape 10 will be synchronously lengthened, and the moving distance of the push pressure plate 16 inside the welded copper tube 1 can be judged by observing the scale on the distance measuring tape 10, so that the moving distance of the push pressure plate 16 is more accurate.
[0053] In a further embodiment, two coating mechanisms are installed on the outer sleeve ring 4, and the coating mechanism includes a coating box 12 fixedly installed on the outer sleeve ring 4, a middle bottom plate 27 is fixedly installed in the coating box 12, and the upper part of the middle bottom plate 27 in the coating box 12 is filled with foam water, an extrusion structure is installed in the coating box 12, and the extrusion structure includes a moving pressure plate 28 slidably installed in the coating box 12, and two telescopic limit rods 30 are fixedly installed between the moving pressure plate 28 and the top wall of the coating box 12, a threaded adjustment rod 31 is installed in the coating box 12, and the lower end of the threaded adjustment rod 31 is rotatably connected to the moving pressure plate 28, and a supplementary pipe 26 for supplementing foam water is fixedly connected to the coating box 12;
[0054] A feeding structure is installed on the smear box 12, and the feeding structure includes a discharge pipe 29 fixedly connected to the middle bottom plate 27, and a discharge valve is installed in the discharge pipe 29. A smear wheel 23 matching the welding seam 3 is rotatably installed in the smear box 12, and the upper part of the smear wheel 23 is located in the smear box 12;
[0055] The operator turns the threaded adjustment rod 31 to drive the movable pressing plate 28 to move downward in the smear box 12 ( Fig. 9 As shown in the direction, when the movable pressing plate 28 moves downward, the foam water in the smear box 12 is squeezed so that it enters the lower part of the middle bottom plate 27 through the discharge pipe 29, so that the foam water can fully contact with the smear wheel 23;
[0056] When the outer ring 4 moves outside the welded copper tube 1, the coating wheel 23 will roll on the welding seam 3 on the welded copper tube 1, and the foam water can be evenly coated on the outside of the welding seam 3 while rolling, so that the welding seam 3 can be foam-sealed, completing the preparation work before the air tightness test.
[0057] A cleaning sponge block 24 that cooperates with the welding seam 3 is fixedly installed at the lower part of the smear box 12. The cleaning sponge block 24 can move with the movement of the smear box 12. Before the air tightness test, when the cleaning sponge block 24 moves outward on the welding seam 3, impurities on the welding seam 3 can be scraped off to keep the surface of the welding seam 3 clean. After the air tightness test is completed, when the cleaning sponge block 24 moves inward on the welding seam 3, the foam water applied on the welding seam 3 can be scraped off and absorbed while moving.
[0058] A detection camera 25 for observing the welding seam 3 is fixedly mounted on the smear box 12, and a control panel 7 cooperating with the detection camera 25 is fixedly mounted on the positioning cover 2. The detection camera 25 can move with the movement of the smear box 12, and can observe the welding seam 3 by video while moving, and can display the observation results in real time on the control panel 7, so that the surface integrity of the welding seam 3 can be observed.
[0059] In a further embodiment, a blocking mechanism is installed in each of the two inflatable tubes 32, and the blocking mechanism includes an elastic frame 33 fixedly installed on the inflatable tube 32, a piston disc 34 is fixedly installed on the elastic frame 33, and the piston disc 34 is pressed and fitted with the inner wall of the inflatable tube 32, and the two inflatable tubes 32 are connected to the air storage tube 5;
[0060] When the internal plugging of the welding copper tube 1 is completed, the push plate 16 cannot move, and the foam water on the external welding seam 3 is applied, the gas storage tube 5 is continued to be inflated. At this time, when the gas in the gas storage tube 5 increases but cannot push the push plate 35 to move, the air in the gas storage tube 5 will enter the inflation tube 32 and push open the piston plate 34 on the elastic frame 33, so that the inflation tube 32 is connected. At this time, the air in the gas storage tube 5 will enter the welding copper tube 1 through the inflation tube 32 and accumulate inside the welding copper tube 1.
[0061] Since the inside of the welded copper tube 1 has been sealed, the increased air inside it cannot rush out from the end of the welded copper tube 1, but can only rush out through the welding seam 3. At this time, the operator can observe the foam water on the welding seam 3 of the welded copper tube 1 from the outside. If no foam is generated on the foam water, it means that the air tightness of the welding seam 3 is good and there is no gap on the welding seam 3. If foam appears on the foam water, it means that the air tightness of the welding seam 3 is not good and there is a gap on the welding seam 3. At this time, the position where the foam appears can be recorded to facilitate subsequent repairs, thereby completing the air tightness detection of the welding seam 3 on the welded copper tube 1.
[0062] The specific method of the device for detecting the air tightness of the welding seam 3 on the welded copper tube 1 is as follows:
[0063] Adjustment of the detection position: when performing air tightness detection on the welded copper tube 1, first install the positioning cover 2 on the welded copper tube 1, and clamp the sealing pressure plate 15 into the port of the welded copper tube 1, so that the sealing pressure plate 15 seals the port of the welded copper tube 1;
[0064] Then hold the control handle 8 and drive the air blowing plate 36 to move rightward in the air blowing pipe 13, and the external air is sucked into the air storage pipe 5 through the two air inlet pipes 6. When the control handle 8 drives the air blowing plate 36 to move left, the air in the air blowing pipe 13 and the air storage pipe 5 will be squeezed, thereby pushing the push plate 35 and the push rod 18 to move inward. Repeat the above steps through the left and right reciprocating movement of the air blowing plate 36, so that the external air can be continuously pressed into the air storage pipe 5, and the push rod 18 can be pushed inward. When the push rod 18 moves, it will move through the limiting convex plate 37 and the push pressure plate 16, so that the push pressure plate 16 can be pushed to move quickly inside the welding copper tube 1, so that the blocking length inside the welding copper tube 1 can be flexibly changed, and the scale on the external distance measuring tape 10 can be observed while moving to control the moving distance of the push pressure plate 16 inside the welding copper tube 1 until the push pressure plate 16 moves to the position to be detected in the welding copper tube 1;
[0065] When the push plate 16 is moved, the operator can rotate the gas storage tube 5 as a whole on the outside, and the rotation of the gas storage tube 5 will drive the push plate 35, the push rod 18 and the limiting convex plate 37 to rotate as a whole, until the limiting convex plate 37 rotates to match the limiting convex groove 38 in the push plate 16. At this time, when the push rod 18 continues to move inward, it will drive the limiting convex plate 37 to move inward and enter the limiting convex groove 38, and will squeeze the limiting spring 22 and the gas pressure plate 20 in the built-in cavity 19, and the pressure When the air disc 20 is squeezed, it will move inwards to squeeze the air in the built-in cavity 19, so that the air in the built-in cavity 19 enters the extrusion rubber ring through the air supply pipe. At this time, the air in the extruded rubber ring increases and expands, thereby squeezing the inner wall of the welded copper tube 1, thereby increasing the friction between the push pressure plate 16 and the inner wall of the welded copper tube 1, and finally making the friction resistance greater than the moving thrust of the push pressure plate 16. At this time, the push pressure plate 16 cannot move when the inflation continues, thereby sealing the inside of the welded copper tube 1.
[0066] Air tightness test of welding seam 3: When the push plate 16 moves, it will drive the outer ring 4 to move synchronously on the welding copper tube 1 under the cooperation of the driven mechanism. When the outer ring 4 moves outside the welding copper tube 1, the smearing wheel 23 will roll on the welding seam 3 on the welding copper tube 1, and the foam water can be evenly applied to the outside of the welding seam 3 while rolling, so that the welding seam 3 can be foam-sealed, completing the preparation work before the air tightness test;
[0067] The detection camera 25 can move with the movement of the outer ring 4 and the smear box 12, and can observe the welding seam 3 while moving, and can display the observation results in real time on the control panel 7, so as to observe the surface integrity of the welding seam 3.
[0068] When the internal plugging of the welding copper tube 1 is completed, the push plate 16 cannot move, and the foam water on the external welding seam 3 is applied, the gas storage tube 5 is continued to be inflated. At this time, when the gas in the gas storage tube 5 increases but cannot push the push plate 35 to move, the air in the gas storage tube 5 will enter the inflation tube 32 and push open the piston plate 34 on the elastic frame 33, so that the inflation tube 32 is connected. At this time, the air in the gas storage tube 5 will enter the welding copper tube 1 through the inflation tube 32 and accumulate inside the welding copper tube 1.
[0069] Since the inside of the welded copper tube 1 has been sealed, the increased air inside it cannot rush out from the end of the welded copper tube 1, but can only rush out through the welding seam 3. At this time, the operator can observe the foam water on the welding seam 3 of the welded copper tube 1 from the outside. If no foam is generated on the foam water, it means that the air tightness of the welding seam 3 is good and there is no gap on the welding seam 3. If foam appears on the foam water, it means that the air tightness of the welding seam 3 is not good and there is a gap on the welding seam 3. At this time, the position where the foam appears can be recorded to facilitate subsequent repairs, thereby completing the air tightness detection of the welding seam 3 on the welded copper tube 1.
[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A quality inspection device based on ship welds, characterized in that: It comprises a positioning cover (2) which is snap-fitted and mounted on a welded copper tube (1), and the welded copper tube (1) has two weld seams (3) to be inspected; A detection and adjustment part, which is used to adjust the detection position on the welding copper tube (1), and comprises an air storage tube (5) rotatably mounted on the positioning cover (2), and a sealing pressure plate (15) rotatably mounted on the air storage tube (5) and pressed against the inner wall of the welding copper tube (1), a push rod (18) is mounted on the air storage tube (5) via an air blowing mechanism, a push pressure plate (16) is mounted on the push rod (18) via a positioning mechanism, and a rubber positioning ring (17) is fixedly mounted on the inner wall of the positioning cover (2); An airtightness detection unit, the airtightness detection unit is used to perform airtightness detection on the welding seam (3) on the welded copper tube (1), the airtightness detection unit comprising two air-filled tubes (32) fixedly mounted on the sealing pressure plate (15), and the two air-filled tubes (32) are both connected to the air storage tube (5), and a sealing mechanism is installed in each of the two air-filled tubes (32), an outer sleeve (4) is fixedly mounted on the positioning cover (2) via a plurality of supporting spring rods (9), and a driven mechanism is installed between the outer sleeve (4) and the push pressure plate (16), and two coating mechanisms are installed on the outer sleeve (4); The air blowing mechanism comprises a push plate (35) slidably mounted in the air storage pipe (5), and a push rod (18) is fixedly mounted on the push plate (35), and an air inlet and outlet structure is mounted on the air storage pipe (5); The air inlet and outlet structure comprises an air inflation pipe (13) fixedly connected to the air storage pipe (5) and two air inlet pipes (6); an air inflation plate (36) is slidably mounted in the air inflation pipe (13), and a control handle (8) is slidably mounted between the air inflation plate (36) and the air inflation pipe (13); an air discharge pipe (14) is fixedly connected to the air storage pipe (5), and control valves are mounted in the air discharge pipe (14) and the two air inlet pipes (6); a handle is fixedly mounted at the lower part of the air inflation pipe (13); The positioning mechanism comprises a limiting convex plate (37) fixedly mounted on the push rod (18); a built-in cavity (19) is provided in the push pressure plate (16); an extrusion rubber ring is fixedly mounted on the outer side of the push pressure plate (16); an air supply pipe is fixedly connected between the extrusion rubber ring and the built-in cavity (19); a pressure plate (20) is slidably mounted in the built-in cavity (19); a limiting spring (22) is rotatably mounted on the pressure plate (20); the limiting spring (22) is fixedly mounted on the limiting convex plate (37); a limiting convex groove (38) is provided in the push pressure plate (16); and the limiting convex groove (38) is connected to the built-in cavity (19); The blocking mechanism comprises an elastic frame (33) fixedly mounted on the inflation tube (32), a piston disc (34) fixedly mounted on the elastic frame (33), and the piston disc (34) is pressed and fitted against the inner wall of the inflation tube (32).
2. A quality inspection device based on ship welds according to claim 1, characterized in that: The driven mechanism comprises two strong magnets (11) fixedly mounted inside the outer ring (4), and the two strong magnets (11) are both in contact with the outer wall of the welded copper tube (1); a magnet ring is fixedly mounted on the push plate (16), and the two strong magnets (11) are both in contact with the magnet ring; a distance measuring structure is installed between the outer ring (4) and the positioning cover (2).
3. A quality inspection device based on ship welds according to claim 2, characterized in that: The distance measuring structure comprises a fixing frame (21) fixedly mounted on the positioning cover (2), a distance measuring tape (10) being arranged on the fixing frame (21), and a zero scale end of the distance measuring tape (10) being fixedly connected to an outer sleeve ring (4).
4. A quality inspection device based on ship welds according to claim 1, characterized in that: The coating mechanism comprises a coating box (12) fixedly mounted on an outer sleeve ring (4), a middle bottom plate (27) fixedly mounted in the coating box (12), and a portion of the coating box (12) located above the middle bottom plate (27) is filled with foam water, an extrusion structure is mounted in the coating box (12), and a feeding structure is mounted on the coating box (12).
5. A quality inspection device based on ship welds according to claim 4, characterized in that: The squeezing structure comprises a movable pressing plate (28) slidably mounted in the smear box (12), and two telescopic limit rods (30) are fixedly mounted between the movable pressing plate (28) and the top wall of the smear box (12), a threaded adjustment rod (31) is internally threadedly mounted in the smear box (12), and the lower end of the threaded adjustment rod (31) is rotatably connected to the movable pressing plate (28), and a replenishing pipe (26) for replenishing foam water is fixedly connected to the smear box (12).
6. A quality inspection device based on ship welds according to claim 5, characterized in that: The feeding structure comprises a discharge pipe (29) fixedly connected to the middle bottom plate (27), and a discharge valve is installed in the discharge pipe (29); a coating wheel (23) matching the welding seam (3) is rotatably installed in the coating box (12), and the upper part of the coating wheel (23) is located in the coating box (12); a cleaning sponge block (24) matching the welding seam (3) is fixedly installed in the lower part of the coating box (12); A detection camera (25) for observing the welding seam (3) is fixedly mounted on the smear box (12), and a control panel (7) matching with the detection camera (25) is fixedly mounted on the positioning cover (2).