Flaw detection equipment and internal flaw detection method for oil tank processing

Abstract

The invention relates to the technical field of flaw detection equipment, and discloses flaw detection equipment and an internal flaw detection method for oil tank machining.The flaw detection equipment comprises a water immersion pool and a water immersion ultrasonic probe, and driving rollers distributed in a linear array are rotationally installed at the inner bottom of the water immersion pool; the driving roller is used for driving a workpiece placed on the driving roller to move in the water immersion pool; according to the flaw detection equipment, the length of the water immersion pool is increased, and the interior of the water immersion pool is divided into the workpiece feeding cavity, the detection cavity and the workpiece discharging cavity, so that flaw detection on the interior of a workpiece, movement of the to-be-detected workpiece into the water immersion pool and movement of the detected workpiece out of the water immersion pool can be carried out at the same time; therefore, the time interval of two times of flaw detection is reduced, the detection efficiency is improved, in addition, by arranging the workpiece lifting mechanism and the object placing table, the controllability of placement and movement of the workpiece is better, and flaw detection equipment is not prone to being damaged when the workpiece enters the water immersion pool and is moved out of the water immersion pool.

Description

Technical Field

[0001] The present invention relates to the technical field of flaw detection equipment, in particular to a flaw detection equipment and an internal flaw detection method for oil tank processing. Background Art

[0002] Ultrasonic testing technology is a very important testing method in the field of non-destructive testing and is widely used in online quality monitoring and control. Water immersion ultrasonic flaw detection is a type of ultrasonic flaw detection. It is widely used in the detection of internal cracks, inclusions and other defects in polymer materials, composite materials, welds, steel pipes, steel materials, etc. due to its characteristics of fast, accurate and pollution-free. The water immersion flaw detection equipment includes an ultrasonic detector, a detection probe and a water tank. The workpiece to be tested is fixed at the bottom of the water tank, and a coupling agent that covers the workpiece is injected into the water tank. Then the detection probe is inserted into the coupling agent to detect the test block; in the process of processing the air compressor cooling oil tank, it is necessary to perform flaw detection on the inside of the oil tank, so as to find cracks, pores, slag inclusions and other defects on the oil tank in advance, so as to repair the defective parts and improve the reliability and stability of the air compressor cooling oil tank.

[0003] Chinese patent CN114441635B discloses an ultrasonic detection system and an immersion flaw detection method, which can detect artificial defects in arc-shaped workpieces or workpieces with arc surfaces, and reduce the missed detection rate of flaw detection. When using the above device to detect flaw detection workpieces, it is necessary to manually take the workpiece out of the water tank box and then put a new workpiece to be detected and flaw detection back in, so that the time interval between workpiece detections is long. At the same time, when detecting large workpieces such as oil tanks, due to the heavy weight of the oil tank, it is necessary to use multiple people to carry it or use an electric reel to lift and transport it into the water tank box. In the process of putting the oil tank into the water tank box, it is easy to collide with the structure of the water tank box, the probe and the installation and driving structure of the probe, which is easy to cause equipment damage.

[0004] Chinese patent CN114813953B discloses a wheel hub semi-immersion detection device. By setting up a pick-up and delivery lifting mechanism and a horizontal pick-up and delivery mechanism, there is no need to manually carry the workpiece to the inside of the water tank, which reduces the difficulty of operation when detecting the workpiece and avoids damage caused by collision between the workpiece and the detection equipment. However, it cannot reduce the time interval for workpiece detection. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a flaw detection device and an internal flaw detection method for oil tank processing, which has the advantage of short intervals for replacing workpieces to be inspected, and solves the problems mentioned in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A flaw detection device comprises a water immersion tank and a water immersion ultrasonic probe, wherein the inner bottom of the water immersion tank is rotatably mounted with driving rollers distributed in a linear array, and the driving rollers are used to drive a workpiece placed on the driving rollers to move inside the water immersion tank; two gates are arranged inside the water immersion tank, and the two gates divide the inside of the water immersion tank into a loading chamber, a detection chamber and a discharge chamber, and a three-dimensional motion and rotation angle adjustment bracket is installed in the detection chamber, and the three-dimensional motion and rotation angle adjustment bracket is used to control the position and detection direction of the water immersion ultrasonic probe, and the insides of the loading chamber and the discharge chamber are both provided with There is a workpiece lifting mechanism, which includes a lifting assembly and a lifting roller. The driving end of the lifting assembly is rotatably connected to the lifting roller, and the lifting assembly is used to control the up and down movement of the lifting roller. The lifting rollers are distributed in a linear array, and the lifting rollers are arranged between adjacent driving rollers. A storage platform is provided on one side of the upper cavity and the lower cavity, and a positioning roller is rotatably installed on the storage platform. The two workpiece lifting mechanisms are respectively used to move the workpiece placed on the positioning roller into the water immersion tank and to move the workpiece inside the water immersion tank to the positioning roller.

[0007] Preferably, mounting seats are provided on both sides of the outside of the immersion tank, and the gate, the three-dimensional motion and rotation angle adjustment bracket and the workpiece lifting mechanism are all fixedly mounted on the mounting seats.

[0008] Preferably, two adjacent driving rollers are connected via a driving pulley, a driving motor is fixedly mounted on one outer wall of the immersion pool, and a driving end of the driving motor is connected to one of the driving rollers.

[0009] Preferably, the gate includes a door frame, a lifting cylinder and a mounting plate, both ends of the door frame are fixedly mounted on the mounting seat, the lifting cylinder is fixedly mounted on the upper end of the door frame, and the driving end of the lifting cylinder is fixedly connected to the upper end of the mounting plate, a gate plate is fixedly mounted on the lower surface of the mounting plate, a guide rod is fixedly mounted inside the door frame, the mounting plate is slidably connected to the guide rod, limit plates are fixedly mounted on the inner walls on both sides of the immersion pool, the gate plate is slidably mounted between the limit plates, and sealing strips are embedded and installed on the bottom and both side surfaces of the gate plate.

[0010] Preferably, the lifting assembly includes a mounting frame, an electric wire reel and a lifting plate, both ends of the mounting frame are fixedly mounted on a mounting seat, the electric wire reel is fixedly mounted on the upper end of the mounting frame, and the electric wire reel is connected to the lifting plate through a suspension rope, vertical plates are symmetrically fixedly mounted on both sides of the lower surface of the lifting plate, the lifting loading roller is rotatably mounted between two opposite vertical plates, a guide rod is also fixedly mounted inside the mounting frame, and the lifting plate is slidably connected to the guide rod.

[0011] Preferably, regular polygonal plates are fixedly mounted on both ends of the lifting load roller, and limit bars are fixedly mounted on the inner walls of both sides of the immersion pool, and the regular polygonal plates and the vertical plates are slidably adapted to the limit bars.

[0012] Preferably, the three-dimensional motion and rotation angle adjustment bracket includes a linear electric slide in the length direction, a linear electric slide in the width direction, a rotation control mechanism, a height control cylinder, and an angle adjustment mechanism. The linear electric slide in the length direction is fixedly mounted on a mounting seat, and the linear electric slide in the width direction is mounted on the driving end of the linear electric slide in the length direction. The rotation control mechanism includes a moving plate, a mounting plate, a rotating drum, and a rotation control motor. The moving plate is fixedly mounted on the driving end of the linear electric slide in the width direction, the mounting plate is fixedly mounted on one side of the moving plate, the rotating drum is rotatably mounted on the mounting plate, the rotation control motor is fixedly mounted on the upper end of the moving plate, the driving shaft of the rotating control motor and the rotating drum are connected by gear transmission, the height control cylinder is sleeved and fixed inside the rotating drum, the angle adjustment mechanism includes a mounting member, a connecting shaft, and an angle adjustment motor, the mounting member is fixedly mounted on the driving end of the height control cylinder, the connecting shaft is fixedly mounted on both ends of the immersion ultrasonic probe, and the connecting shaft is rotatably connected to the mounting member, the angle adjustment motor is fixedly mounted inside the mounting member, and the driving end of the angle adjustment motor and one of the connecting shafts are connected by gear transmission.

[0013] Preferably, a filtering mechanism is provided on one side of the immersion pool, and the filtering mechanism includes a circulating water tank and a water pump. The circulating water tank is installed at the bottom of one of the storage tables, and a filter screen is slidably inserted inside the circulating water tank, and the filter screen divides the interior of the circulating water tank into a raw liquid tank and a filter tank. The interiors of the raw liquid tank and the filter tank are respectively provided with a water tank inlet pipe and a water tank outlet pipe extending to the outside of the circulating water tank. The interior of the immersion pool close to the circulating water tank is provided with a pool inlet pipe and a pool outlet pipe extending to the outside of the immersion pool. The pumping end and the drainage end of the water pump are respectively fixedly connected with a pumping three-way valve and a drainage three-way valve, and the other two ends of the pumping three-way valve are respectively connected to the water tank outlet pipe and the pool outlet pipe, and the other two ends of the drainage three-way valve are respectively connected to the water tank inlet pipe and the pool inlet pipe, and a supporting table is provided at the bottom of the other storage table.

[0014] Preferably, the circulating water tank is arranged on a side close to the discharge cavity, and an opening communicating with the inside of the circulating water tank is opened on the storage table.

[0015] The present invention also discloses an internal flaw detection method for oil tank processing, the specific steps of which are: The oil tank is moved to a storage platform close to the upper workpiece cavity by a crane or manually, and then the oil tank on the storage platform is pushed to move so that the oil tank moves to the lifting roller of the adjacent workpiece lifting mechanism, and then the lifting roller is driven by the lifting assembly to move the oil tank down to the inside of the upper workpiece cavity so that the bottom of the oil tank contacts the driving roller; The oil tank in the upper chamber is driven by the driving roller to move toward the detection chamber. When the oil tank enters the detection chamber, the gates on both sides are closed at the same time, so that the liquid flow between the upper chamber, the detection chamber and the discharge chamber is cut off. The bracket drives the water-immersion ultrasonic probe to move around the top and sides of the oil tank through three-dimensional motion and rotation angle adjustment to perform ultrasonic flaw detection inside the oil tank. After the flaw detection is completed, the gate is opened to move the oil tank toward the outlet cavity; During the flaw detection process, the oil tank to be inspected is transported to the storage table and transported to the interior of the upper cavity through the workpiece lifting mechanism. At the same time, the oil tank that has completed the flaw detection in the output cavity is transported upward through the workpiece lifting mechanism and pushed to the storage table, and then transported away manually or by a crane.

[0016] Compared with the prior art, the present invention provides a flaw detection device and an internal flaw detection method for oil tank processing, which has the following beneficial effects: 1. The flaw detection and testing equipment extends the length of the water immersion tank and divides the interior of the water immersion tank into a loading chamber, a testing chamber and a discharging chamber, so that flaw detection and testing of the interior of the workpiece, moving the workpiece to be tested into the interior of the water immersion tank and removing the tested workpiece from the interior of the water immersion tank can be carried out simultaneously, thereby reducing the time interval between two flaw detections and improving the detection efficiency. In addition, by arranging a workpiece lifting mechanism and a storage table, the controllability of the placement and movement of the workpiece is better, and it is more convenient to lift and put down the workpiece. The flaw detection and testing equipment is not easy to be damaged when the workpiece enters the water immersion tank and is removed from the water immersion tank.

[0017] 2. The flaw detection equipment is provided with a driving roller, a lifting roller and a positioning roller. When the driving roller, the lifting roller and the positioning roller rotate, they can push the workpiece to move in a straight line. With the setting of the lifting component, the lifting roller can be close to the driving roller or the positioning roller, so that the workpiece can be easily moved to the driving roller or the positioning roller.

[0018] 3. The flaw detection equipment uses a gate to separate the loading chamber, the detection chamber and the output chamber. When the workpiece is detected inside the detection chamber, the water flow fluctuation caused by the workpiece entering and exiting the loading chamber and the output chamber will not have an adverse effect on the detection effect of the water immersion ultrasonic probe, thereby ensuring the effect of the flaw detection. By setting a filtering mechanism, the coupling agent liquid inside the immersion tank can be filtered. Due to the setting of the valve, the coupling agent filtering can be carried out simultaneously with the entry and exit of the workpiece, and will not cause the coupling agent liquid inside the detection chamber. Fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention; Figure 3 This is the third schematic diagram of the three-dimensional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged local structure at point A in the middle; Figure 5 This is the fourth schematic diagram of the three-dimensional structure of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at B in the middle; Figure 7 For the present invention Figure 5 A magnified schematic diagram of the local structure at C in the middle; Figure 8 This is the fifth schematic diagram of the three-dimensional structure of the present invention.

[0020] In the figure: 1. Water immersion tank; 11. Loading chamber; 12. Detection chamber; 13. Discharging chamber; 14. Driving roller; 15. Driving pulley; 16. Driving motor; 2. Mounting seat; 3. Gate; 31. Door frame; 32. Lifting cylinder; 33. Mounting plate; 34. Gate plate; 35. Guide rod; 36. Limit plate; 37. Sealing strip; 4. Three-dimensional motion and rotation angle adjustment bracket; 41. Linear electric slide in length direction; 42. Linear electric slide in width direction; 43. Rotation control mechanism; 431. Moving plate; 432. Mounting plate; 433. Rotating drum; 434. Rotation control motor; 44. Height control cylinder; 45. Angle adjustment mechanism; 451. Mounting piece; 452. Connecting shaft; 453. Angle adjustment motor; 5. Water immersion ultrasonic probe; 6. Workpiece lifting mechanism; 61. Lifting assembly; 611. Mounting frame; 612. Electric reel; 613. Lifting plate; 614. Vertical plate; 615. Guide rod; 616. Limiting strip; 62. Lifting and lowering roller; 621. Regular polygonal plate; 7. Storage table; 71. Positioning loading roller; 8. Filter mechanism; 81. Circulating water tank; 811. Raw liquid tank; 812. Filter tank; 82. Filter screen; 83. Water tank inlet pipe; 84. Water tank outlet pipe; 85. Water pool inlet pipe; 86. Water pool outlet pipe; 87. Water pump; 88. Pumping three-way valve; 89. Drainage three-way valve; 9. Support table. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0022] See also Figure 1 - Figure 4 The present invention provides a flaw detection device, including a water immersion tank 1 and a water immersion ultrasonic probe 5. The inner bottom of the water immersion tank 1 is rotatably installed with driving rollers 14 distributed in a linear array, and the driving rollers 14 are used to drive the workpiece placed on the driving rollers 14 to move inside the water immersion tank 1; two gates 3 are arranged inside the water immersion tank 1, and the two gates 3 divide the inside of the water immersion tank 1 into a loading chamber 11, a detection chamber 12 and a discharge chamber 13. A three-dimensional motion and rotation angle adjustment bracket 4 is installed in the detection chamber 12, and the three-dimensional motion and rotation angle adjustment bracket 4 is used to control the position and detection direction of the water immersion ultrasonic probe 5. The interiors of the loading chamber 11 and the discharge chamber 13 are both provided with The workpiece lifting mechanism 6 includes a lifting component 61 and a lifting carrier roller 62. The driving end of the lifting component 61 is rotatably connected to the lifting carrier roller 62, and the lifting component 61 is used to control the up and down movement of the lifting carrier roller 62. The lifting carrier rollers 62 are distributed in a linear array, and the lifting carrier rollers 62 are arranged between adjacent driving rollers 14; a storage table 7 is provided on one side of the upper cavity 11 and the discharge cavity 13, and a positioning carrier roller 71 is rotatably installed on the storage table 7. The two workpiece lifting mechanisms 6 are respectively used to move the workpiece placed on the positioning carrier roller 71 to the inside of the immersion tank 1 and to move the workpiece inside the immersion tank 1 to the positioning carrier roller 71.

[0023] As can be seen from the above, by extending the length of the immersion tank 1 and dividing the interior of the immersion tank 1 into a loading chamber 11, a detection chamber 12 and a discharge chamber 13, flaw detection of the interior of the workpiece, moving the workpiece to be detected into the interior of the immersion tank 1 and removing the workpiece after detection from the interior of the immersion tank 1 can be carried out simultaneously, thereby reducing the time interval between two flaw detections and improving the detection efficiency. In addition, by setting the workpiece lifting mechanism 6 and the storage table 7, the controllability of the placement and movement of the workpiece is better, and it is more convenient to lift or put down the workpiece. The workpiece is not easy to cause damage to the flaw detection equipment when entering the immersion tank 1 or moving it out of the immersion tank 1; by setting the driving roller 1 4. The lifting and lowering loading roller 62 and the positioning loading roller 71, when the driving roller 14, the lifting and lowering loading roller 62 and the positioning loading roller 71 rotate, can push the workpiece to move in a straight line. With the setting of the lifting component 61, the lifting and lowering loading roller 62 can be close to the driving roller 14 or the positioning loading roller 71, so that the workpiece can be conveniently moved to the driving roller 14 or the positioning loading roller 71; by using the gate 3 to separate the loading chamber 11, the detection chamber 12 and the discharge chamber 13, when the workpiece is detected inside the detection chamber 12, the water flow fluctuation caused by the workpiece entering and exiting the loading chamber 11 and the discharge chamber 13 will not have an adverse effect on the detection effect of the water immersion ultrasonic probe 5, thereby ensuring the effect of the flaw detection.

[0024] In this embodiment, when the lifting component 61 drives the lifting roller 62 to move downward, the lifting roller 62 can be moved to the bottom of the driving roller 14, so that the oil tank on the lifting roller 62 is separated from the lifting roller 62 and is completely supported by the driving roller 14, so that the driving roller 14 can better push the oil tank to move when it rotates; when the lifting component 61 drives the lifting roller 62 to move upward, the lifting roller 62 and the positioning roller 71 can be horizontally aligned, thereby pushing the oil tank to move between the lifting roller 62 and the positioning roller 71. Since there is no structure that will cause obstruction above the storage platform 7, it is more convenient to use lifting equipment or manpower to move the oil tank.

[0025] In summary, when the flaw detection equipment is used to detect the inside of the oil tank, the oil tank is moved to the storage table 7 close to the upper chamber 11 by a crane or manually, and then the oil tank that has fallen on the storage table 7 is pushed to move, so that the oil tank moves to the lifting and loading roller 62 of the adjacent workpiece lifting mechanism 6, and then the lifting and loading roller 62 is moved down with the oil tank by the lifting component 61 to the interior of the upper chamber 11, so that the bottom of the oil tank contacts the driving roller 14; then the driving roller 14 rotates to drive the oil tank in the upper chamber 11 to move toward the detection chamber 12. When the oil tank enters the interior of the detection chamber 12, the gates 3 on both sides are closed at the same time, so that the upper chamber 11 is moved to the upper chamber 11. The liquid flow between the workpiece cavity 11, the detection cavity 12 and the workpiece output cavity 13 is blocked; then the water immersion ultrasonic probe 5 is driven to move around the top and side of the oil tank through the three-dimensional motion and rotation angle adjustment bracket 4 to perform ultrasonic flaw detection on the inside of the oil tank; after the flaw detection is completed, the gate 3 is opened to move the oil tank toward the workpiece output cavity 13; during the flaw detection process, the oil tank to be detected is transported to the storage table 7, and is transported to the inside of the upper workpiece cavity 11 through the workpiece lifting mechanism 6. At the same time, the oil tank that has completed the flaw detection in the workpiece output cavity 13 is transported upward through the workpiece lifting mechanism 6, and is pushed onto the storage table 7, and then transported away manually or by a crane. Example

[0026] like Figure 1 - Figure 5 As shown, the difference between this embodiment and the above embodiment is that mounting seats 2 are provided on both sides of the outside of the immersion tank 1, and the gate 3, three-dimensional motion and rotation angle adjustment bracket 4 and workpiece lifting mechanism 6 are all fixedly mounted on the mounting seats 2.

[0027] From the above, it can be seen that due to the setting of the mounting base 2, the gate 3, the three-dimensional motion and rotation angle adjustment bracket 4 and the workpiece lifting mechanism 6 are not directly installed on the immersion pool 1, so as to avoid excessive load-bearing on the wall of the immersion pool 1, thereby extending the service life of the immersion pool 1.

[0028] Two adjacent driving rollers 14 are connected to each other through a driving pulley 15 . A driving motor 16 is fixedly mounted on one outer wall of the immersion tank 1 . The driving end of the driving motor 16 is connected to one of the driving rollers 14 .

[0029] As can be seen from the above, by providing the transmission pulley 15 and the drive motor 16 , all the drive rollers 14 rotate at the same speed and in the same direction, so that the workpiece falling onto the drive rollers 14 in the upper chamber 11 can be transported by the drive rollers 14 to the inside of the discharge chamber 13 .

[0030] The gate 3 includes a door frame 31, a lifting cylinder 32 and a mounting plate 33. Both ends of the door frame 31 are fixedly mounted on the mounting seat 2, the lifting cylinder 32 is fixedly mounted on the upper end of the door frame 31, and the driving end of the lifting cylinder 32 is fixedly connected to the upper end of the mounting plate 33. A gate plate 34 is fixedly mounted on the lower surface of the mounting plate 33. A guide rod 35 is fixedly mounted inside the door frame 31. The mounting plate 33 is slidably connected to the guide rod 35. Limiting plates 36 are fixedly mounted on the inner walls of both sides of the immersion pool 1. The gate plate 34 is slidably mounted between the limiting plates 36. Sealing strips 37 are embedded and installed on the bottom and both side surfaces of the gate plate 34.

[0031] As can be seen from the above, the extension and retraction of the driving end of the lifting cylinder 32 can control the lifting and lowering of the mounting plate 33 and the gate plate 34. When the mounting plate 33 moves up and down, the limiting function of the guide rod 35 can prevent the mounting plate 33 and the gate plate 34 from shaking and shifting. By setting the limiting plate 36, the two side surfaces of the gate plate 34 can be blocked. With the cooperation of the sealing strip 37, the sealing performance can be improved, so that when the gate 3 is closed, the coupling liquid will not flow between the upper chamber 11, the detection chamber 12 and the output chamber 13, thereby reducing the liquid flow rate inside the detection chamber 12 during flaw detection.

[0032] The lifting assembly 61 includes a mounting frame 611, an electric wire reel 612 and a lifting plate 613. Both ends of the mounting frame 611 are fixedly mounted on the mounting seat 2. The electric wire reel 612 is fixedly mounted on the upper end of the mounting frame 611, and the electric wire reel 612 is connected to the lifting plate 613 through a suspension rope. Vertical plates 614 are symmetrically fixedly mounted on both sides of the lower surface of the lifting plate 613. The lifting roller 62 is rotatably mounted between the two opposite vertical plates 614. A guide rod 615 is also fixedly mounted inside the mounting frame 611, and the lifting plate 613 is slidably connected to the guide rod 615.

[0033] As can be seen from the above, by providing the mounting frame 611 and the electric reel 612, heavy oil tanks and other large industrial parts can be stably lifted and transported, and by providing the lifting plate 613 and the guide rod 615, the lifting plate 613 can be prevented from swinging when moving up and down.

[0034] Regular polygonal plates 621 are fixedly installed at both ends of the lifting load roller 62 , and limit bars 616 are fixedly installed on the inner walls of both sides of the immersion pool 1 . The regular polygonal plates 621 and the vertical plates 614 are slidably adapted to the limit bars 616 .

[0035] As can be seen from the above, since the regular polygonal plate 621 is slidably adapted to the limit bar 616, when the regular polygonal plate 621 is inside the limit bar 616, the lifting and loading roller 62 cannot rotate, thereby preventing the lifting and loading roller 62 from sliding and shifting the oil tank during the up and down movement. When the regular polygonal plate 621 moves to the top of the limit bar 616, the workers can use manpower to help fix the oil tank to prevent the oil tank from rolling accidentally, so that the oil tank can only move in the direction pushed by the workers. By setting the vertical plates 614 to be slidably adapted to the limit bar 616, the position of the lifting and loading roller 62 is further limited to prevent the pressure of the oil tank on the lifting and loading roller 62 from causing the vertical plates 614 to deform, thereby causing the spacing between adjacent lifting and loading rollers 62 to change. Example

[0036] like Figure 3 , Figure 5 and Figure 6 As shown, the difference between this embodiment and the above embodiment is that the three-dimensional motion and rotation angle adjustment bracket 4 includes a linear electric slide 41 in the length direction, a linear electric slide 42 in the width direction, a rotation control mechanism 43, a height control cylinder 44, and an angle adjustment mechanism 45. The linear electric slide 41 in the length direction is fixedly installed on the mounting seat 2, and the linear electric slide 42 in the width direction is installed on the driving end of the linear electric slide 41 in the length direction. The rotation control mechanism 43 includes a moving plate 431, a mounting plate 432, a rotating drum 433 and a rotation control motor 434. The moving plate 431 is fixedly installed on the driving end of the linear electric slide 42 in the width direction, the mounting plate 432 is fixedly installed on one side of the moving plate 431, and the rotating drum 433 is rotatably installed. On the mounting plate 432, the rotation control motor 434 is fixedly mounted on the upper end of the movable plate 431, the driving shaft of the rotation control motor 434 and the rotating drum 433 are connected by gear transmission, the height control cylinder 44 is sleeved and fixed inside the rotating drum 433, the angle adjustment mechanism 45 includes a mounting member 451, a connecting shaft 452 and an angle adjustment motor 453, the mounting member 451 is fixedly mounted on the driving end of the height control cylinder 44, the connecting shaft 452 is fixedly mounted on both ends of the immersion ultrasonic probe 5, and the connecting shaft 452 is rotatably connected to the mounting member 451, the angle adjustment motor 453 is fixedly mounted inside the mounting member 451, and the driving end of the angle adjustment motor 453 and one of the connecting shafts 452 are connected by gear transmission.

[0037] As can be seen from the above, the linear electric slide 41 in the length direction and the linear electric slide 42 in the width direction are both linear moving devices in the prior art, and their movable ends move along the length direction and width direction of the immersion tank 1 respectively. The height control cylinder 44 is a cylinder device in the prior art, and its driving end realizes the change of height through the extension and retraction of the movable end of the cylinder. In conjunction with the setting of the rotation control mechanism 43 and the angle adjustment mechanism 45, the water immersion ultrasonic probe 5 can be rotated and tilted at different angles to facilitate flaw detection at different positions of the oil tank. Example

[0038] like Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the difference between this embodiment and the above embodiment is that a filtering mechanism 8 is provided on one side of the immersion pool 1, and the filtering mechanism 8 includes a circulating water tank 81 and a water pump 87. The circulating water tank 81 is installed at the bottom of one of the storage tables 7, and a filter screen plate 82 is slidably inserted in the circulating water tank 81. The filter screen plate 82 divides the inside of the circulating water tank 81 into a raw liquid pool 811 and a filter pool 812. The insides of the raw liquid pool 811 and the filter pool 812 are respectively provided with a water tank water inlet pipe 83 and a water pump 87 extending to the outside of the circulating water tank 81. A sink outlet pipe 84, a sink water inlet pipe 85 and a sink water outlet pipe 86 extending to the outside of the immersion pool 1 are arranged on one side of the immersion pool 1 near the circulating water tank 81, the pumping end and the drainage end of the water pump 87 are respectively fixedly connected with a pumping three-way valve 88 and a drainage three-way valve 89, the other two ends of the pumping three-way valve 88 are respectively connected to the sink outlet pipe 84 and the sink outlet pipe 86, the other two ends of the drainage three-way valve 89 are respectively connected to the sink inlet pipe 83 and the sink inlet pipe 85, and a support table 9 is arranged at the bottom of another storage table 7.

[0039] From the above, it can be seen that when the channel between the water pump 87 in the pumping three-way valve 88 and the water outlet pipe 86 of the water pool is connected, and the channel between the water pump 87 in the drainage three-way valve 89 and the water tank inlet pipe 83 is connected, the water pump 87 can transport the water in the immersion pool 1 to the raw liquid pool 811; when the channel between the water pump 87 in the pumping three-way valve 88 and the water tank outlet pipe 84 is connected, and the channel between the water pump 87 in the drainage three-way valve 89 and the water tank inlet pipe 85 is connected, the water pump 87 can transport the water in the filter pool 812 to the immersion pool 1.

[0040] The circulating water tank 81 is disposed on a side close to the discharge cavity 13 , and an opening communicating with the inside of the circulating water tank 81 is provided on the storage table 7 .

[0041] As can be seen from the above, by setting the circulating water tank 81 next to the workpiece output cavity 13, when the workpiece that has completed the inspection is moved out from the inside of the immersion tank 1 and falls on the storage table 7 on the top of the circulating water tank 81, the coupling agent liquid on the surface of the workpiece can drip into the circulating water tank 81. Therefore, the waste of coupling agent can be reduced by leaving the workpiece still on the storage table 7 for a period of time. Example

[0042] See also Figure 1 - Figure 8 The present invention also discloses an internal flaw detection method for oil tank processing, the specific steps are: The oil tank is moved to the storage platform 7 close to the upper workpiece cavity 11 by a crane or manually, and then the oil tank dropped on the storage platform 7 is pushed to move, so that the oil tank moves to the lifting and loading roller 62 of the adjacent workpiece lifting mechanism 6, and then the lifting and loading roller 62 is brought down and moved to the inside of the upper workpiece cavity 11 by the lifting assembly 61, so that the bottom of the oil tank contacts the driving roller 14; The oil tank in the upper chamber 11 is driven by the driving roller 14 to move toward the detection chamber 12. When the oil tank enters the detection chamber 12, the gates 3 on both sides are closed at the same time, so that the liquid flow between the upper chamber 11, the detection chamber 12 and the discharge chamber 13 is cut off; The bracket 4 is driven by three-dimensional motion and rotation angle adjustment to move the water immersion ultrasonic probe 5 around the top and side of the oil tank to perform ultrasonic flaw detection on the inside of the oil tank; After the flaw detection is completed, the gate 3 is opened to move the oil tank toward the outlet cavity 13; During the flaw detection process, the oil tank to be inspected is transported to the storage table 7 and transported to the interior of the upper cavity 11 through the workpiece lifting mechanism 6. At the same time, the oil tank that has completed the flaw detection in the output cavity 13 is transported upward through the workpiece lifting mechanism 6 and pushed onto the storage table 7, and then transported away manually or by a crane.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flaw detection device, comprising a water immersion tank and a water immersion ultrasonic probe, characterized in that: The inner bottom of the immersion tank is rotatably installed with driving rollers distributed in a linear array, and the driving rollers are used to drive the workpiece placed on the driving rollers to move inside the immersion tank; two gates are arranged inside the immersion tank, and the two gates divide the inside of the immersion tank into a loading chamber, a detection chamber and an output chamber, and a three-dimensional motion and rotation angle adjustment bracket is installed in the detection chamber, and the three-dimensional motion and rotation angle adjustment bracket is used to control the position and detection direction of the immersion ultrasonic probe, and the inside of the loading chamber and the output chamber are both provided with a workpiece lifting mechanism, and the workpiece lifting mechanism includes a lifting assembly and a lifting load roller, and the driving end of the lifting assembly is rotatably connected to the lifting load roller, and the lifting assembly is used to control the lifting load roller to move up and down, and the lifting load roller is distributed in a linear array, and the lifting load roller is arranged between adjacent driving rollers; a storage platform is arranged on one side of the loading chamber and the output chamber, and a positioning load roller is rotatably installed on the storage platform, and the two workpiece lifting mechanisms are respectively used to move the workpiece placed on the positioning load roller into the immersion tank and move the workpiece inside the immersion tank to the positioning load roller.

2. A flaw detection device according to claim 1, characterized in that: Mounting seats are arranged on both sides of the outside of the immersion pool, and the gate, the three-dimensional motion and rotation angle adjustment bracket and the workpiece lifting mechanism are all fixedly mounted on the mounting seats.

3. A flaw detection device according to claim 1, characterized in that: Two adjacent driving rollers are connected by a driving belt pulley. A driving motor is fixedly mounted on an outer wall of one side of the immersion pool. The driving end of the driving motor is connected to one of the driving rollers.

4. A flaw detection device according to claim 1, characterized in that: The gate includes a door frame, a lifting cylinder and a mounting plate, both ends of the door frame are fixedly mounted on the mounting seats, the lifting cylinder is fixedly mounted on the upper end of the door frame, and the driving end of the lifting cylinder is fixedly connected to the upper end of the mounting plate, a gate plate is fixedly mounted on the lower surface of the mounting plate, a guide rod is fixedly mounted inside the door frame, the mounting plate is slidably connected to the guide rod, limit plates are fixedly mounted on the inner walls of both sides of the immersion tank, the gate plate is slidably mounted between the limit plates, and sealing strips are embedded and installed on the bottom and both side surfaces of the gate plate.

5. A flaw detection device according to claim 1, characterized in that: The lifting assembly includes a mounting frame, an electric wire reel and a lifting plate, both ends of the mounting frame are fixedly mounted on the mounting seat, the electric wire reel is fixedly mounted on the upper end of the mounting frame, and the electric wire reel is connected to the lifting plate through a suspension rope, vertical plates are symmetrically fixedly mounted on both sides of the lower surface of the lifting plate, the lifting loading roller is rotatably mounted between two opposite vertical plates, a guide rod is also fixedly mounted inside the mounting frame, and the lifting plate is slidably connected to the guide rod.

6. A flaw detection device according to claim 5, characterized in that: Regular polygonal plates are fixedly installed at both ends of the lifting load roller, and limit bars are fixedly installed on the inner walls of both sides of the immersion pool. The regular polygonal plates and the vertical plates are slidably adapted to the limit bars.

7. The flaw detection equipment according to claim 1, characterized in that: The three-dimensional motion and rotation angle adjustment bracket includes a linear electric slide in the length direction, a linear electric slide in the width direction, a rotation control mechanism, a height control cylinder, and an angle adjustment mechanism. The linear electric slide in the length direction is fixedly mounted on a mounting seat, and the linear electric slide in the width direction is mounted on the driving end of the linear electric slide in the length direction. The rotation control mechanism includes a moving plate, a mounting plate, a rotating drum, and a rotation control motor. The moving plate is fixedly mounted on the driving end of the linear electric slide in the width direction, the mounting plate is fixedly mounted on one side of the moving plate, the rotating drum is rotatably mounted on the mounting plate, the rotation control motor is fixedly mounted on the upper end of the moving plate, the driving shaft of the rotating control motor and the rotating drum are connected by gear transmission, the height control cylinder is sleeved and fixed inside the rotating drum, the angle adjustment mechanism includes a mounting member, a connecting shaft, and an angle adjustment motor, the mounting member is fixedly mounted on the driving end of the height control cylinder, the connecting shaft is fixedly mounted on both ends of the water immersion ultrasonic probe, and the connecting shaft is rotatably connected to the mounting member, the angle adjustment motor is fixedly mounted inside the mounting member, and the driving end of the angle adjustment motor and one of the connecting shafts are connected by gear transmission.

8. The flaw detection equipment according to claim 1, characterized in that: A filtering mechanism is provided on one side of the immersion pool, and the filtering mechanism includes a circulating water tank and a water pump. The circulating water tank is installed at the bottom of one of the storage tables, and a filter screen is slidably inserted inside the circulating water tank. The filter screen divides the interior of the circulating water tank into a raw liquid tank and a filter tank. The interiors of the raw liquid tank and the filter tank are respectively provided with a water tank inlet pipe and a water tank outlet pipe extending to the outside of the circulating water tank. The interior of the immersion pool close to the circulating water tank is provided with a pool inlet pipe and a pool outlet pipe extending to the outside of the immersion pool. The pumping end and the drainage end of the water pump are respectively fixedly connected with a pumping three-way valve and a drainage three-way valve, and the other two ends of the pumping three-way valve are respectively connected to the water tank outlet pipe and the pool outlet pipe, and the other two ends of the drainage three-way valve are respectively connected to the water tank inlet pipe and the pool inlet pipe, and a supporting table is provided at the bottom of the other storage table.

9. A flaw detection device according to claim 8, characterized in that: The circulating water tank is arranged on a side close to the discharge cavity, and the storage table is provided with an opening which is communicated with the inside of the circulating water tank.

10. An internal flaw detection method for oil tank processing, using a flaw detection device as claimed in any one of claims 1 to 9, characterized in that: The specific steps are: The oil tank is moved to a storage platform close to the upper workpiece cavity by a crane or manually, and then the oil tank on the storage platform is pushed to move so that the oil tank moves to the lifting roller of the adjacent workpiece lifting mechanism, and then the lifting roller is driven by the lifting assembly to move the oil tank down to the inside of the upper workpiece cavity so that the bottom of the oil tank contacts the driving roller; The oil tank in the upper chamber is driven by the driving roller to move toward the detection chamber. When the oil tank enters the detection chamber, the gates on both sides are closed at the same time, so that the liquid flow between the upper chamber, the detection chamber and the discharge chamber is cut off. The bracket drives the water-immersion ultrasonic probe to move around the top and sides of the oil tank through three-dimensional motion and rotation angle adjustment to perform ultrasonic flaw detection inside the oil tank. After the flaw detection is completed, the gate is opened to move the oil tank toward the outlet cavity; During the flaw detection process, the oil tank to be inspected is transported to the storage table and transported to the interior of the upper cavity through the workpiece lifting mechanism. At the same time, the oil tank that has completed the flaw detection in the output cavity is transported upward through the workpiece lifting mechanism and pushed to the storage table, and then transported away manually or by a crane.

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