Flaw detection device for low-temperature storage tank

Abstract

The utility model discloses a flaw detection device for a low-temperature storage tank, and relates to the technical field of flaw detection of low-temperature storage tanks, the flaw detection device comprises a detection head and a pasting frame, the pasting frame is slidably sleeved on the outer surface of the detection head, main shafts slidably penetrate through the right side surface of the pasting frame and are positioned on the front side and the rear side of the detection head, and two air shafts are arranged between the two main shafts; the pasting frame slidably sleeves the outer surfaces of the two air shafts, a vertical pipe fixedly penetrates through one surface, far away from the detection head, of the main shaft, an air cavity ring fixedly sleeves one end, far away from the detection head, of the vertical pipe, the other end of the vertical pipe fixedly sleeves the outer surfaces of the air shafts, and an inner ring is rotatably inserted into the air cavity ring; according to the flaw detection device for the low-temperature storage tank, the suction cup pipe, the notch pipe and the hollow wheel are arranged, the air pump provides suction force for the interior of the hollow wheel, the pasting frame is close to the tank body, the suction cup pipe makes contact with the tank body, and the hollow wheel adsorbs the tank body and supports the detection head through the suction cup pipe making contact with the tank body.

Description

Technical Field

[0001] The utility model relates to the technical field of flaw detection of low-temperature storage tanks, in particular to a flaw detection device for low-temperature storage tanks. Background Art

[0002] Cryogenic storage tanks are vertical or horizontal double-layer vacuum insulated storage tanks used to store liquid oxygen, nitrogen, argon, carbon dioxide and other media. Cryogenic storage tanks will be damaged after long-term use and need to be inspected using flaw detection devices. Flaw detection refers to the detection of cracks or defects inside metal materials or components. Generally, magnetic, radiographic, ultrasonic and other instruments are used.

[0003] In the flaw detection device, a detection head is attached to the surface of the tank for detection. During the detection, the detection head is supported by the arms to make the detection head close to the tank. Long-term support will cause fatigue to the operator. Therefore, a flaw detection device for low-temperature storage tanks is proposed. By setting a structure, the operating head can be supported when the operator does not need to hold the operating head. Utility Model Content

[0004] In view of the problem that the detection head is supported by the arms during detection, and long-term support may cause fatigue to the operator, the present utility model is proposed.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a device for flaw detection of low-temperature storage tanks, comprising a detection head and a mounting frame, wherein the mounting frame is slidably sleeved on the outer surface of the detection head, a main shaft is slidably penetrated on the right side of the mounting frame and located at the front and rear sides of the detection head, two air shafts are arranged between the two main shafts, the mounting frame is slidably sleeved on the outer surfaces of the two air shafts, a vertical tube is fixedly penetrated on one side of the main shaft away from the detection head, an air cavity ring is fixedly sleeved on one end of the vertical tube away from the detection head, and the other end of the vertical tube is fixedly sleeved on the outer surface of the air shaft, and the inner surface of the air cavity ring An inner ring is rotatably connected to the inside of the inner ring, a longitudinal tube is fixedly connected to the inside of the inner ring, a vertical plate connected to the inside of the longitudinal tube is fixedly installed on the bottom surface of the longitudinal tube, a plurality of notched shafts connected to the inside of the notched shaft are fixedly installed on the lower end of the vertical plate, a hollow wheel is rotatably sleeved on the outer surface of the notched shaft, a suction cup tube connected to the inside of the hollow wheel is fixedly installed on the outer surface of the hollow wheel, an air pump is fixedly installed on the right end of the frame, a hose is fixedly connected to the right end of the air shaft, a through pipe is fixedly connected to the lower end of the air pump, two hoses are respectively installed at the front and rear ends of the through pipe, and a nut is threadedly sleeved on the outer surface of the main shaft and located at the right end of the frame.

[0006] Preferably, a notch ring is rotatably inserted into the inner ring surface of the hollow wheel, the lower end of the notch ring is open, and the inner ring surface of the notch ring is fixedly connected to the outer surface of the notch shaft.

[0007] Preferably, an eccentric plate is rotatably sleeved on the central portion of the upper surface of the longitudinal tube, a synchronous plate is arranged between two adjacent eccentric plates located on the same side of the detection head, and both ends of the synchronous plate are rotatably connected to the adjacent eccentric plates.

[0008] Preferably, arc grooves are provided on the right side surface of the mounting bracket and on both the front and rear sides of the detection head, the air shaft is slidably inserted in the arc groove, and the arc groove is coaxially arranged with the adjacent main shaft.

[0009] Preferably, the main axis is arranged parallel to the gas axis, the vertical tube is arranged perpendicular to the gas axis, and the plurality of vertical tubes are evenly distributed in two rows at equal distances.

[0010] Preferably, one end of the detection head located below the mounting bracket is sleeved with a spring, and two ends of the spring are fixedly connected to the mounting bracket and the detection head respectively.

[0011] Beneficial effects of the utility model:

[0012] 1. By setting the suction cup tube, notch tube and hollow wheel, the air pump provides suction to the hollow wheel, and the frame is close to the tank body so that the suction cup tube contacts the tank body. The hollow wheel adsorbs the tank body through the suction cup tube in contact with the tank body to support the detection head.

[0013] 2. By setting the synchronous plate and the eccentric plate, when the detection head needs to turn, the angle of the hollow wheel is changed. When the hollow wheel rotates, the eccentric plate is driven by the longitudinal tube. The eccentric plate drives the adjacent hollow wheel to rotate synchronously through the synchronous plate, so that the rotation angle of the hollow wheel on one side of the detection head is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a right side structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the gas shaft and the hose of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the hollow wheel of the utility model.

[0019] Description of reference numerals:

[0020] 1. Detection head; 2. Sticker; 3. Air shaft; 4. Vertical tube; 5. Air cavity ring; 6. Inner ring; 7. Longitudinal tube; 8. Notched shaft; 9. Hollow wheel; 10. Air pump; 11. Through pipe; 12. Main shaft; 13. Suction cup tube; 14. Hose; 15. Nut; 16. Vertical plate; 17. Notched ring; 18. Eccentric plate; 19. Synchronous plate; 20. Arc groove; 21. Spring. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] Reference Figure 1-4, which is an embodiment of the utility model, provides a low-temperature storage tank flaw detection device, which includes a detection head 1 and a mounting frame 2, the mounting frame 2 is slidably sleeved on the outer surface of the detection head 1, the detection head 1 is connected to the flaw detection main body device, and the end of the detection head 1 located below the mounting frame 2 is sleeved with a spring 21, and the two ends of the spring 21 are respectively fixedly connected to the mounting frame 2 and the detection head 1, and the spring 21 has a tendency to push the detection head 1 close to the tank body, and the right side of the mounting frame 2 and the front and rear sides of the detection head 1 are slidably penetrated by a main shaft 12, and between the two main shafts 12 Two air shafts 3 are provided, and the mounting frame 2 is slidably sleeved on the outer surfaces of the two air shafts 3. A vertical tube 4 is fixedly penetrated on the side of the main shaft 12 away from the detection head 1. The main shaft 12 is arranged parallel to the air shaft 3, and the vertical tube 4 is arranged vertically to the air shaft 3. A plurality of vertical tubes 4 are evenly distributed in two rows at equal distances. An air cavity ring 5 is fixedly sleeved on one end of the vertical tube 4 away from the detection head 1, and the other end of the vertical tube 4 is fixedly sleeved on the outer surface of the air shaft 3. An inner ring 6 is rotatably inserted inside the air cavity ring 5, and a longitudinal tube 7 is fixedly inserted inside the inner ring 6. A vertical plate 16 connected to the interior of the longitudinal tube 7 is fixedly installed on the bottom surface of the longitudinal tube 7. The inner ring 6 It can rotate relative to the air cavity ring 5. The lower end of the vertical plate 16 is fixedly installed with multiple notched shafts 8 connected to the inside thereof. The outer surface of the notched shaft 8 is rotatably sleeved with a hollow wheel 9. The notched shaft 8 can provide suction to the hollow wheel 9. The central part of the upper surface of the longitudinal tube 7 is rotatably sleeved with an eccentric plate 18. A synchronous plate 19 is arranged between two adjacent eccentric plates 18 on the same side of the detection head 1. Both ends of the synchronous plate 19 are rotatably connected to the adjacent eccentric plates 18. When the frame 2 needs to turn, the inner ring 6 is pushed to rotate relative to the air cavity ring 5. The eccentric plates 18 drive the adjacent eccentric plates 18 through the connected synchronous plates 19. The vertical plates 16 rotate synchronously to make the inclination angles of the hollow wheels 9 equal, which is convenient for the rack 2 to turn. The outer surface of the hollow wheel 9 is fixedly installed with a suction cup tube 13 connected to its interior. The inner annular surface of the hollow wheel 9 is rotatably inserted with a notch ring 17. The lower end of the notch ring 17 is open, and the inner annular surface of the notch ring 17 is fixedly connected to the outer surface of the notch shaft 8. The notch ring 17 allows only the suction cup tube 13 close to the tank body to draw air and adsorb the tank body. The suction cup tubes 13 connected to adjacent hollow wheels 9 can contact the tank body alternately. When the rack 2 moves, at least one of the suction cup tubes 13 on one side adsorbs the tank body.

[0023] An air pump 10 is fixedly installed on the right end of the frame 2, a hose 14 is fixedly inserted on the right end of the air shaft 3, a through pipe 11 is fixedly connected to the lower end of the air pump 10, and two hoses 14 are respectively installed at the front and rear ends of the through pipe 11. A nut 15 is threadedly sleeved on the outer surface of the main shaft 12 and located at the right end of the frame 2. The nut 15 is rotated to engage with the main shaft 12 to press the frame 2 and fix the angle of the main shaft 12.

[0024] An arc groove 20 is provided on the right side surface of the mounting bracket 2 and on both the front and rear sides of the detection head 1. The air shaft 3 is slidably inserted into the arc groove 20. The arc groove 20 is coaxially arranged with the adjacent main shaft 12. When the main shaft 12 rotates, the adjacent air shaft 3 is driven to slide in the arc groove 20. The arc on the surface of the tank body is bent. When the main shaft 12 rotates, the vertical tubes 4 on both sides form an angle, so that the suction cup tube 13 is perpendicular to the tank body it contacts.

[0025] When the rack 2 is in motion, the eccentric plate 18 is driven by the longitudinal tube 7, and the eccentric plate 18 drives the adjacent eccentric wheels 9 to rotate synchronously through the synchronous plate 19, so that the rotation angle of the eccentric wheels 9 on one side of the detection head 1 is the same, which is convenient for the rack 2 to turn and move. When the rack 2 is pushed to move, the eccentric plate 18 is driven by the longitudinal tube 7, and the eccentric plate 18 drives the adjacent eccentric wheels 9 to rotate synchronously through the synchronous plate 19, so that the rotation angle of the eccentric wheels 9 on one side of the detection head 1 is the same, which is convenient for the rack 2 to turn and move. When the rack 2 is pushed to move, the eccentric plate 18 is driven by the longitudinal tube 7, and the eccentric plate 18 drives the adjacent eccentric wheels 9 to rotate synchronously through the synchronous plate 19, so that the rotation angle of the eccentric wheels 9 on one side of the detection head 1 is the same, which is convenient for the rack 2 to turn and move. When the rack 2 is pushed to move, the eccentric plate 18 rotates around the axis of the corresponding eccentric shaft 8, so that the eccentric tubes 13 on different eccentric wheels 9 are alternately contacted and adsorbed with the tank body.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A flaw detection device for cryogenic storage tanks, comprising a detection head (1) and a mounting frame (2), characterized in that: The mounting frame (2) is slidably sleeved on the outer surface of the detection head (1); a main shaft (12) is slidably penetrated on the right side of the mounting frame (2) and on both the front and rear sides of the detection head (1); two air shafts (3) are arranged between the two main shafts (12); the mounting frame (2) is slidably sleeved on the outer surfaces of the two air shafts (3); a vertical tube (4) is fixedly penetrated on the side of the main shaft (12) away from the detection head (1); an air cavity ring (5) is fixedly sleeved on one end of the vertical tube (4) away from the detection head (1); the other end of the vertical tube (4) is fixedly sleeved on the outer surface of the air shaft (3); an inner ring (6) is rotatably inserted inside the air cavity ring (5); a longitudinal tube (7) is fixedly inserted inside the inner ring (6); the longitudinal tube ( A vertical plate (16) communicating with the interior is fixedly mounted on the bottom surface of the vertical plate (16), a plurality of notched shafts (8) communicating with the interior are fixedly mounted on the lower end of the vertical plate (16), a hollow wheel (9) is rotatably sleeved on the outer surface of the notched shaft (8), a suction cup tube (13) communicating with the interior is fixedly mounted on the outer surface of the hollow wheel (9), an air pump (10) is fixedly mounted on the right end of the mounting frame (2), a hose (14) is fixedly plugged into the right end of the air shaft (3), a through pipe (11) is fixedly connected to the lower end of the air pump (10), two hoses (14) are respectively mounted on the front and rear ends of the through pipe (11), and a nut (15) is threadedly sleeved on the outer surface of the main shaft (12) and located at the right end of the mounting frame (2).

2. The flaw detection device for cryogenic storage tanks according to claim 1 is characterized in that: A notch ring (17) is rotatably inserted into the inner ring surface of the hollow wheel (9), the lower end of the notch ring (17) is open, and the inner ring surface of the notch ring (17) is fixedly connected to the outer surface of the notch shaft (8).

3. The flaw detection device for cryogenic storage tanks according to claim 1 is characterized in that: An eccentric plate (18) is rotatably sleeved on the central portion of the upper surface of the longitudinal tube (7), a synchronous plate (19) is provided between two adjacent eccentric plates (18) located on the same side of the detection head (1), and both ends of the synchronous plate (19) are rotatably connected to the adjacent eccentric plates (18).

4. The flaw detection device for cryogenic storage tanks according to claim 1 is characterized in that: The right side of the mounting frame (2) and the front and rear sides of the detection head (1) are both provided with arc grooves (20), the air shaft (3) is slidably inserted into the arc groove (20), and the arc groove (20) is coaxially arranged with the adjacent main shaft (12).

5. The flaw detection device for cryogenic storage tanks according to claim 1 is characterized in that: The main axis (12) is arranged parallel to the gas axis (3), the vertical tube (4) is arranged perpendicular to the gas axis (3), and the plurality of vertical tubes (4) are evenly distributed in two rows at equal distances.

6. The flaw detection device for cryogenic storage tanks according to claim 1 is characterized in that: One end of the detection head (1) located below the mounting bracket (2) is sleeved with a spring (21), and two ends of the spring (21) are respectively fixedly connected to the mounting bracket (2) and the detection head (1).

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