Device for detecting cracks on inner surface of energy pressure vessel

Abstract

The invention belongs to the technical field of detection, and particularly relates to an energy pressure vessel inner surface crack detection device which comprises a detection table, a detection mechanism is arranged on one side of the top of the detection table, the detection mechanism is composed of a detection assembly and a moving assembly, and the moving assembly is fixed to one side of the top of the detection table. The detection assembly is fixed to one side of the top of the moving assembly, the other side of the top of the detection table is connected with two supporting plates through bolts, a fixing mechanism is arranged between the two supporting plates, a rotating mechanism is arranged on one side of the fixing mechanism, and an impact mechanism is arranged on one side of the top of the detection table. And the impact mechanism is matched with the rotating mechanism. According to the device, impurities adhered to the inner surface of the container can be effectively treated, and the situation that in the detection process, due to the impurities adhered to the inner surface of the pressure container, detection of the detection assembly is interfered, and consequently flaw detection of the pressure container is affected is prevented.

Description

Technical Field

[0001] This invention relates to the field of testing, and more particularly to a device for detecting cracks on the inner surface of an energy pressure vessel. Background Technology

[0002] A pressure vessel is a sealed device that withstands a certain pressure and is mainly used to hold gases or liquids. Pressure vessels have a wide range of applications, especially in the chemical and petrochemical industries. They are mainly used for heat transfer, mass transfer, reaction and other processes, as well as for storing and transporting pressurized gases or liquefied gases. In addition, they are also widely used in other industrial and civil fields. A qualified pressure vessel cannot be separated from various tests, including crack detection on its internal surface.

[0003] A search revealed Chinese patent application CN118897016A, which discloses a device for detecting cracks on the inner surface of a pressure vessel. The device includes a support platform with a groove array on its upper curved surface and a rotating hole on its side. A pressure vessel is slidably connected to the upper curved surface of the support platform. A rotating mechanism is located on one side of the support platform, and a winding mechanism is located on the other side. The winding mechanism includes a connecting cable, and a detection mechanism is located at its upper end. This detection device, through the detection mechanism, effectively guides an ultrasonic flaw detector at the end of a stick-on rod into the pressure vessel. The stick-on rod design reduces the space occupied by the entire detection mechanism. The rotating pan-tilt head drives the ultrasonic flaw detector to perform detection in different directions, increasing the detection coverage and angle. The limiting mechanism enables the stick-on rod to perform efficient and accurate detection of the inner walls of different pressure vessels.

[0004] When existing devices detect and treat cracks on the inner surface of energy pressure vessels, the pressure vessel is usually fixed to the device, and an ultrasonic flaw detector is inserted into the inside of the pressure vessel to perform the inspection. However, during the inspection process, impurities may adhere to the inner surface of the pressure vessel, which will affect the flaw detection of the pressure vessel. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for detecting cracks on the inner surface of an energy pressure vessel includes a testing platform. A testing mechanism is provided on one side of the top of the testing platform, and the testing mechanism consists of a testing component and a moving component. The moving component is fixed to one side of the top of the testing platform, and the testing component is fixed to one side of the top of the moving component. Two support plates are bolted to the other side of the top of the testing platform, and a fixing mechanism is provided between the two support plates. A rotating mechanism is provided on one side of the fixing mechanism, and an impact mechanism is provided on one side of the top of the testing platform. The impact mechanism and the rotating mechanism cooperate with each other.

[0006] Preferably, the moving assembly includes a moving base, a first motor, a screw, and a moving block. The bottom of the moving base is bolted to one side of the top of the testing platform. The top of the moving base has a moving groove. The two sides of the moving groove are rotatably connected to the screw via bearings. The moving block is slidably connected inside the moving groove. One side of the moving block has a threaded hole that is threaded to the screw. The top of the moving block is bolted to a base. One side of the moving base is bolted to the first motor. One end of the first motor is fixedly connected to the screw. Positioning grooves are provided on both sides of the top of the testing platform. The two positioning grooves are symmetrically distributed on both sides of the moving base. Positioning plates are slidably connected to the inner walls of the two positioning grooves. The tops of the two positioning plates are bolted to the bottom of the base.

[0007] Preferably, the detection assembly includes a support base, a support rod, a detection head, an ultrasonic flaw detector, and a camera. The bottom of the support base is connected to the top of the base by bolts. One end of the support rod is welded to the support base, and the other end of the support rod is connected to the detection head by bolts. Both sides of the detection head are connected to the ultrasonic flaw detector and the camera by bolts, respectively.

[0008] Preferably, the fixing mechanism includes a fixing ring, a support rail, a support ring, a hydraulic cylinder, and a clamping plate. The support ring is fixedly sleeved on the outer circumference of the fixing ring. The two support plates are connected to the support rail by bolts. The support rail is slidably connected to the support ring. The inner circumference of the fixing ring has three grooves. A slider is slidably connected to the inner wall of the groove. A first spring is bolted to one side of the slider and the groove. The bottom of the slider is bolted to the hydraulic cylinder. One end of the hydraulic cylinder is fixedly connected to the clamping plate. The bottom of the clamping plate is set as an arc surface. An impact head is bolted to the other side of the groove.

[0009] Preferably, the rotating mechanism consists of a fixed plate, a second motor, a rotating rod, two gears, and two gear rings. The bottom of the fixed plate is bolted to one side of the top of the testing platform. One end of the rotating rod is rotatably connected to the fixed plate via a bearing. One side of the fixed plate is bolted to the second motor. One end of the second motor is fixedly connected to the rotating rod. Both gears are fixedly sleeved on the outer circumference of the rotating rod, and both gear rings are fixedly sleeved on the outer circumference of the fixed ring. The two gears mesh with the two gear rings.

[0010] Preferably, the impact mechanism includes a transmission assembly, a rotating shaft, a lifting assembly, an impact plate, and an impact block. The rotating shaft and the fixed plate are rotatably connected by bearings. The two ends of one side of the impact plate are bolted to the fixed plate with dampers. The outer walls of the two dampers are fitted with second springs. The other side of the impact plate is bolted to the impact block. The lifting assembly consists of two top blocks. Each of the two top blocks has a lifting end on its corresponding side. The two lifting ends are fitted together. The rotating shaft and the rotating rod are rotatably connected by bearings.

[0011] Preferably, the transmission assembly consists of two pulleys and a belt, and the two pulleys and the belt are rotatably connected. One pulley is fixedly sleeved on the outer circumference of the rotating rod, and the other pulley is fixedly sleeved on the outer circumference of the rotating shaft.

[0012] Preferably, a cleaning mechanism is provided on one side of the detection component, and the cleaning mechanism and the impact mechanism cooperate with each other.

[0013] Preferably, the cleaning mechanism includes a limiting ring, a support pad, and two airbags. The limiting ring is slidably connected to the outer wall of the support rod. Guide grooves are provided on both sides of the outer wall of the support rod. Guide blocks are slidably connected to the inner walls of the two guide grooves. The guide blocks are fixedly connected to the limiting ring. An annular groove is provided on one side of the limiting ring. A sliding ring is slidably connected to the inner wall of the annular groove. One side of the sliding ring is bolted to the support pad. The support pad is slidably connected to the support rod. A third spring is bolted to both sides of the limiting ring and the support seat. The airbags are located between the limiting ring and the support seat. A guide hole is provided inside the support rod. An exhaust hole is provided through both sides of the guide hole and between the two airbags. An air jet hole is provided through one side of the inner wall of the guide hole. An air jet pipe is fixed to the inner wall of the air jet hole. One end of the air jet pipe is inclined towards the position of the camera.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through a fixed mechanism and an impact mechanism, detects and processes cracks on the inner surface of an energy pressure vessel. The vessel is fixed inside the fixed mechanism. After fixing, a moving component is activated, which moves the detection component, allowing it to insert into the vessel's interior for crack detection. Simultaneously, a rotating mechanism is activated, causing the fixed mechanism and the vessel to rotate. This facilitates comprehensive inspection of the vessel's interior by the detection component. The rotating mechanism drives one of the pulleys, which, through the interaction of the two pulleys and the belt, cause the other pulley to drive the shaft synchronously. The shaft, while rotating, also drives... One of the top blocks is rotated, and through the cooperation of multiple lifting ends, the other top block drives the impact plate and impact block to move to one side of the container. At this time, the impact block will hit the container, and the container will slide to one side under the impact. When the impact block moves to the other side, the container will be reset under the action of the first spring. When the slider drives the container to reset, it will collide with the impact head. The alternating impact of the impact block and the impact head can effectively treat the impurities adhering to the inner surface of the container, so as to improve the detection effect of the detection component and prevent the detection component from being interfered with by the impurities adhering to the inner surface of the pressure vessel during the detection process, thereby affecting the flaw detection of the pressure vessel. 2. The present invention, through the impact mechanism and the cleaning mechanism, causes the container to move to one side when impacted by the impact mechanism. This movement pushes the support pad and the limiting ring to slide to one side. The limiting ring, during this sliding motion, compresses the airbag. At this time, the gas inside the airbag is delivered to the guide hole through the exhaust port. The gas inside the guide hole is then sprayed to one side of the camera through the jet pipe, thus cleaning the camera surface and preventing dust generated during the impact from falling onto the camera surface and causing blurring, which would affect the detection of cracks on the inner surface of the container. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an energy pressure vessel inner surface crack detection device proposed in this invention; Figure 2 This is a schematic diagram of the main structure of a crack detection device for the inner surface of an energy pressure vessel proposed in this invention. Figure 3 This is a schematic diagram of the detection mechanism structure of an energy pressure vessel inner surface crack detection device proposed in this invention. Figure 4 This is a partial structural schematic diagram of a crack detection device for the inner surface of an energy pressure vessel proposed in this invention. Figure 5 This is a schematic diagram of the fixing mechanism structure of an energy pressure vessel inner surface crack detection device proposed in this invention; Figure 6 for Figure 5 The structural diagram at point A is presented in the text; Figure 7 This is a schematic diagram of the impact mechanism structure of an energy pressure vessel inner surface crack detection device proposed in this invention. Figure 8 This is a schematic diagram of the cleaning mechanism of an energy pressure vessel inner surface crack detection device proposed in this invention.

[0016] In the attached diagram: 1. Testing table; 2. Positioning slot; 3. Support plate; 4. Rotating mechanism; 5. Fixing plate; 6. Impact mechanism; 7. Fixing mechanism; 8. Testing assembly; 9. Support base; 10. Base; 11. Positioning plate; 12. Moving assembly; 13. Moving seat; 14. First motor; 15. Moving slot; 16. Screw; 17. Support rod; 18. Testing head; 19. Ultrasonic flaw detector; 20. Camera; 21. Second motor; 22. Rotating rod; 23. Gear; 24. Fixing ring; 25. 16. Support rail; 27. Clamping plate; 28. Slide groove; 29. ​​Support ring; 30. Slider; 31. Hydraulic cylinder; 32. First spring; 33. Impact head; 34. Pulley; 35. Belt; 36. Shaft; 37. Lifting assembly; 38. Top block; 39. Damper; 40. Second spring; 41. Impact plate; 42. Impact block; 43. Support pad; 44. Limiting ring; 45. Guide groove; 46. Guide block; 47. Airbag; 48. Third spring; 49. Guide hole; 40. Jet pipe. Detailed Implementation

[0017] Example 1, referring to Figures 1-7 A device for detecting cracks on the inner surface of an energy pressure vessel includes a testing platform 1. A testing mechanism is provided on one side of the top of the testing platform 1, and the testing mechanism consists of a testing component 8 and a moving component 12. The moving component 12 is fixed to one side of the top of the testing platform 1, and the testing component 8 is fixed to one side of the top of the moving component 12. Two support plates 3 are bolted to the other side of the top of the testing platform 1, and a fixing mechanism 7 is provided between the two support plates 3. A rotating mechanism 4 is provided on one side of the fixing mechanism 7. An impact mechanism 6 is provided on one side of the top of the testing platform 1, and the impact mechanism 6 and the rotating mechanism 4 cooperate to effectively treat impurities adhering to the inner surface of the vessel, so as to improve the detection effect of the testing component 8 and prevent the detection of the testing component 8 from being interfered with by impurities adhering to the inner surface of the pressure vessel during the detection process, thereby affecting the flaw detection of the pressure vessel.

[0018] Based on the above, the moving assembly 12 includes a moving base 13, a first motor 14, a screw 16, and a moving block. The bottom of the moving base 13 is bolted to one side of the top of the testing platform 1. The top of the moving base 13 has a moving groove 15. The two sides of the moving groove 15 are rotatably connected to the screw 16 through bearings. The moving block is slidably connected inside the moving groove 15. One side of the moving block has a threaded hole that is threaded to the screw 16. The top of the moving block is bolted to a base 10. One side of the moving base 13 is bolted to the first motor 14. One end of the first motor 14 is fixedly connected to the screw 16. Positioning grooves 2 are provided on both sides of the top of the testing platform 1. The two positioning grooves 2 are symmetrically distributed on both sides of the moving base 13. Positioning plates 11 are slidably connected to the inner walls of the two positioning grooves 2. The tops of the two positioning plates 11 are bolted to the bottom of the base 10.

[0019] Based on the above, the detection component 8 includes a support base 9, a support rod 17, a detection head 18, an ultrasonic flaw detector 19, and a camera 20. The bottom of the support base 9 is connected to the top of the base 10 by bolts. One end of the support rod 17 is welded to the support base 9, and the other end of the support rod 17 is connected to the detection head 18 by bolts. Both sides of the detection head 18 are connected to the ultrasonic flaw detector 19 and the camera 20 by bolts, respectively.

[0020] Based on the above, the fixing mechanism 7 includes a fixing ring 24, a support rail 25, a support ring 28, a hydraulic cylinder 30, and a clamping plate 26. The support ring 28 is fixedly sleeved on the outer circumference of the fixing ring 24. The two support plates 3 are connected to the support rail 25 by bolts. The support rail 25 is slidably connected to the support ring 28. The inner circumference of the fixing ring 24 is provided with three sliding grooves 27. The inner wall of the sliding grooves 27 is slidably connected to a slider 29. One side of the slider 29 and the sliding groove 27 are connected to a first spring 31 by bolts. The bottom of the slider 29 is connected to the hydraulic cylinder 30 by bolts. One end of the hydraulic cylinder 30 is fixedly connected to the clamping plate 26. The bottom of the clamping plate 26 is set as an arc surface. The other side of the sliding groove 27 is connected to an impact head 32 by bolts.

[0021] Based on the above, the rotating mechanism 4 consists of a fixed plate 5, a second motor 21, a rotating rod 22, two gears 23, and two gear rings. The bottom of the fixed plate 5 is connected to one side of the top of the testing platform 1 by bolts. One end of the rotating rod 22 is rotatably connected to the fixed plate 5 by a bearing. One side of the fixed plate 5 is connected to the second motor 21 by bolts. One end of the second motor 21 is fixedly connected to the rotating rod 22. Both gears 23 are fixedly sleeved on the outer circumference of the rotating rod 22. Both gear rings are fixedly sleeved on the outer circumference of the fixed ring 24. The two gears 23 mesh with the two gear rings.

[0022] Based on the above, the impact mechanism 6 includes a transmission assembly, a rotating shaft 35, a lifting assembly 36, an impact plate 40, and an impact block 41. The rotating shaft 35 is rotatably connected to the fixed plate 5 via bearings. The two ends of one side of the impact plate 40 are bolted to the fixed plate 5 with dampers 38. The outer walls of the two dampers 38 are fitted with second springs 39. The other side of the impact plate 40 is bolted to the impact block 41. The lifting assembly 36 consists of two top blocks 37. Each of the two top blocks 37 has a lifting end on its corresponding side. The two lifting ends are fitted together. The rotating shaft 35 is rotatably connected to the rotating rod 22 via bearings.

[0023] Based on the above, the transmission assembly consists of two pulleys 33 and a belt 34, and the two pulleys 33 and the belt 34 form a rotatable connection. One pulley 33 is fixedly sleeved on the outer circumference of the rotating rod 22, and the other pulley 33 is fixedly sleeved on the outer circumference of the rotating shaft 35.

[0024] Example 2, refer to Figures 1-8 A device for detecting cracks on the inner surface of an energy pressure vessel, compared with Embodiment 1, has a cleaning mechanism provided on one side of the detection component 8, and the cleaning mechanism and the impact mechanism 6 cooperate with each other.

[0025] Based on the above, the cleaning mechanism includes a limiting ring 43, a support pad 42, and two airbags 46. The limiting ring 43 is slidably connected to the outer wall of the support rod 17. Guide grooves 44 are provided on both sides of the outer wall of the support rod 17. Guide blocks 45 are slidably connected to the inner walls of the two guide grooves 44. The guide blocks 45 are fixedly connected to the limiting ring 43. An annular groove is provided on one side of the limiting ring 43. A sliding ring is slidably connected to the inner wall of the annular groove. One side of the sliding ring is bolted to the support pad 42. The support pad 42 is slidably connected to the support rod 17. The two sides of the limiting ring 43 are bolted to the support base 9. A third spring 47 is connected to the bolt. The airbag 46 is located between the limiting ring 43 and the support seat 9. The support rod 17 has a guide hole 48 inside. The two sides of the guide hole 48 and the two airbags 46 have exhaust holes. One side of the inner wall of the guide hole 48 has a jet hole. The inner wall of the jet hole is fixed with a jet pipe 49. One end of the jet pipe 49 is tilted towards the position of the camera 20 to facilitate cleaning of the surface of the camera 20 and prevent dust generated during the impact from falling on the surface of the camera 20, which would cause the camera 20 to become blurry and thus affect the detection of cracks on the inner surface of the container.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for detecting cracks on the inner surface of an energy pressure vessel, comprising a testing platform (1), characterized in that, A detection mechanism is provided on one side of the top of the detection platform (1), and the detection mechanism consists of a detection component (8) and a moving component (12). The moving component (12) is fixed on one side of the top of the detection platform (1), and the detection component (8) is fixed on one side of the top of the moving component (12). Two support plates (3) are connected to the other side of the top of the detection platform (1) by bolts, and a fixing mechanism (7) is provided between the two support plates (3). A rotating mechanism (4) is provided on one side of the fixing mechanism (7), and an impact mechanism (6) is provided on one side of the top of the detection platform (1). The impact mechanism (6) and the rotating mechanism (4) cooperate with each other.

2. The energy pressure vessel inner surface crack detection device according to claim 1, characterized in that, The moving assembly (12) includes a moving base (13), a first motor (14), a screw (16), and a moving block. The bottom of the moving base (13) is bolted to one side of the top of the testing table (1). A moving groove (15) is provided on the top of the moving base (13). The two sides of the moving groove (15) are rotatably connected to the screw (16) through bearings. The moving block is slidably connected inside the moving groove (15). A threaded hole is provided through one side of the moving block, and the threaded hole is threadedly connected to the screw (16). The top of the moving block is connected to the base (10) by bolts. One side of the moving base (13) is connected to the first motor (14) by bolts. One end of the first motor (14) is fixedly connected to the screw (16). Positioning grooves (2) are provided on both sides of the top of the detection table (1). The two positioning grooves (2) are symmetrically distributed on both sides of the moving base (13). Positioning plates (11) are slidably connected to the inner walls of the two positioning grooves (2). The top of the two positioning plates (11) is connected to the bottom of the base (10) by bolts.

3. The energy pressure vessel inner surface crack detection device according to claim 2, characterized in that, The detection component (8) includes a support base (9), a support rod (17), a detection head (18), an ultrasonic flaw detector (19), and a camera (20). The bottom of the support base (9) is connected to the top of the base (10) by bolts. One end of the support rod (17) is welded to the support base (9), and the other end of the support rod (17) is connected to the detection head (18) by bolts. The two sides of the detection head (18) are respectively connected to the ultrasonic flaw detector (19) and the camera (20) by bolts.

4. The energy pressure vessel inner surface crack detection device according to claim 1, characterized in that, The fixing mechanism (7) includes a fixing ring (24), a support rail (25), a support ring (28), a hydraulic cylinder (30), and a clamping plate (26). The support ring (28) is fixedly sleeved on the outer circumference of the fixing ring (24). The two support plates (3) are connected to the support rail (25) by bolts. The support rail (25) is slidably connected to the support ring (28). The inner circumference of the fixing ring (24) is provided with three sliding grooves (27). The inner wall of the sliding groove (27) is slidably connected with a slider (29). One side of the slider (29) and the sliding groove (27) are connected by bolts with a first spring (31). The bottom of the slider (29) is connected to the hydraulic cylinder (30) by bolts. One end of the hydraulic cylinder (30) is fixedly connected to the clamping plate (26). The bottom of the clamping plate (26) is set as an arc surface. The other side of the sliding groove (27) is connected by bolts with an impact head (32).

5. The energy pressure vessel inner surface crack detection device according to claim 4, characterized in that, The rotating mechanism (4) consists of a fixed plate (5), a second motor (21), a rotating rod (22), two gears (23) and two toothed rings. The bottom of the fixed plate (5) is connected to one side of the top of the test platform (1) by bolts. One end of the rotating rod (22) is connected to the fixed plate (5) by a bearing. One side of the fixed plate (5) is connected to the second motor (21) by bolts. One end of the second motor (21) is fixedly connected to the rotating rod (22). The two gears (23) are fixedly sleeved on the outer circumference of the rotating rod (22). The two toothed rings are fixedly sleeved on the outer circumference of the fixed ring (24). The two gears (23) mesh with the two toothed rings.

6. The energy pressure vessel inner surface crack detection device according to claim 5, characterized in that, The impact mechanism (6) includes a transmission assembly, a rotating shaft (35), a lifting assembly (36), an impact plate (40), and an impact block (41). The rotating shaft (35) and the fixed plate (5) are connected by bearings. The two ends of one side of the impact plate (40) are connected to the fixed plate (5) by bolts with dampers (38). The outer walls of the two dampers (38) are fitted with second springs (39). The other side of the impact plate (40) is connected to the impact block (41) by bolts. The lifting assembly (36) consists of two top blocks (37). Each of the two top blocks (37) has a lifting end on one side. The two lifting ends are fitted together. The rotating shaft (35) and the rotating rod (22) are connected by bearings.

7. The energy pressure vessel inner surface crack detection device according to claim 6, characterized in that, The transmission assembly consists of two pulleys (33) and a belt (34), and the two pulleys (33) and the belt (34) form a rotatable connection. One pulley (33) is fixedly sleeved on the outer circumference of the rotating rod (22), and the other pulley (33) is fixedly sleeved on the outer circumference of the rotating shaft (35).

8. The energy pressure vessel inner surface crack detection device according to claim 6, characterized in that, A cleaning mechanism is provided on one side of the detection component (8), and the cleaning mechanism and the impact mechanism (6) cooperate with each other.

9. The energy pressure vessel inner surface crack detection device according to claim 8, characterized in that, The cleaning mechanism includes a limiting ring (43), a support pad (42), and two airbags (46). The limiting ring (43) is slidably connected to the outer wall of the support rod (17). Guide grooves (44) are provided on both sides of the outer wall of the support rod (17). Guide blocks (45) are slidably connected to the inner walls of the two guide grooves (44). The guide blocks (45) are fixedly connected to the limiting ring (43). An annular groove is provided on one side of the limiting ring (43). A sliding ring is slidably connected to the inner wall of the annular groove. One side of the sliding ring is connected to the support pad (42) by bolts. The support pad (46) is slidably connected to the support pad (42). 2) The support rod (17) is slidably connected to the limit ring (43). The two sides of the limit ring (43) are connected to the support seat (9) by bolts. The airbag (46) is located between the limit ring (43) and the support seat (9). The support rod (17) has a guide hole (48) inside. The two sides of the guide hole (48) are connected to the two airbags (46) through an exhaust hole. The inner wall of the guide hole (48) is connected to a jet hole. The inner wall of the jet hole is fixed with a jet pipe (49). One end of the jet pipe (49) is tilted towards the position of the camera (20).

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