Liquefied natural gas storage tank detection device

Abstract

The utility model discloses a liquefied natural gas storage tank detection device which comprises a water tank, a connecting bridge is installed between a first conveying belt and a second conveying belt, a rotary driving mechanism is installed at the top end of a first portal frame, an ultrasonic flaw detection sensor is installed on a lifting mechanism, a push plate is installed at the bottom end of a horizontal moving mechanism, and a detection mechanism is installed on the push plate. The vacuum liquefied natural gas storage tank is placed on the first conveying belt and attracted by the neodymium magnet block, the first conveying belt enables the storage tank to be submerged in liquid in the water tank after moving, the rotary driving mechanism is matched with the lifting mechanism to enable the ultrasonic flaw detection sensor to rotate around the storage tank and ascend and descend, and whether the storage tank has dark damage or not is detected. Whether the storage tank is immersed in the liquid or not is checked after the storage tank is immersed in the liquid for a long time, finally, the horizontal moving mechanism drives the push plate to convey the storage tank after detection to the second conveying belt through the connecting bridge, and the device can automatically complete metal flaw detection and gas tightness detection of the natural gas storage tank.

Description

Technical Field

[0001] This utility model relates to the field of natural gas storage tank testing technology, and more specifically, to a liquefied natural gas storage tank testing device. Background Technology

[0002] With the widespread application of liquefied natural gas (LNG) in the energy sector, the safety performance of storage tanks has become a focus of industry attention. Traditional tank inspection methods rely on manual inspections and periodic maintenance, which suffer from low efficiency and insufficient real-time performance. Therefore, developing an automated and intelligent LNG storage tank inspection device is of significant practical importance.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a liquefied natural gas storage tank detection device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A liquefied natural gas (LNG) storage tank inspection device includes a water tank. A first conveyor belt is installed on the inner side of the water tank, and a second conveyor belt is installed on the rear side of the water tank. A connecting bridge is installed between the first and second conveyor belts. A first gantry frame is fixedly installed on the left outer side of the water tank, and a second gantry frame is fixedly installed on the right outer side of the water tank. A rotary drive mechanism is installed at the top of the first gantry frame, and a lifting mechanism is installed at the bottom of the rotary drive mechanism. An ultrasonic flaw detection sensor is installed on the lifting mechanism. A horizontal moving mechanism is installed at the upper end of the second gantry frame, and a push plate is installed at the bottom of the horizontal moving mechanism.

[0007] As a further embodiment of this utility model, both the first conveyor belt and the second conveyor belt include a conveyor belt, and a neodymium magnet block is fixedly installed on the inner side of the conveyor belt.

[0008] As a further embodiment of this utility model, the rotary drive mechanism includes a first servo motor, a worm gear is fixedly mounted at the end of the main shaft of the first servo motor, and a worm wheel is meshed with the outer side of the worm gear.

[0009] As a further embodiment of this utility model, the lifting mechanism includes a rotating rod, a second servo motor is fixedly installed at the top end of the rotating rod, a lead screw is fixedly installed at the end of the main shaft of the second servo motor, and a lead screw sleeve is helically connected to the outer side of the lead screw.

[0010] As a further embodiment of this utility model, the horizontal moving mechanism includes a third servo motor, and a threaded rod is fixedly installed at the end of the main shaft of the third servo motor, and a threaded sleeve is helically connected to the outer side of the threaded rod.

[0011] As a further embodiment of this utility model, an inlet plug is installed on the upper right side of the water tank, and an outlet plug is installed on the lower right side of the water tank.

[0012] As a further embodiment of this utility model, the first conveyor belt and the second conveyor belt are arranged in parallel, and a drive motor is provided on the rear side of the left roller shaft of both the first conveyor belt and the second conveyor belt.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention utilizes a water tank, a first conveyor belt, a second conveyor belt, neodymium magnets, a rotary drive mechanism, a lifting mechanism, an ultrasonic flaw detection sensor, a horizontal movement mechanism, and a push plate. A vacuum liquefied natural gas (LNG) storage tank is placed on the first conveyor belt and attracted by the neodymium magnets. As the first conveyor belt moves, the tank is submerged in the liquid in the water tank. The rotary drive mechanism, in conjunction with the lifting mechanism, causes the ultrasonic flaw detection sensor to rotate and move up and down around the tank to detect any hidden damage. The tank is submerged in liquid for an extended period to check for any liquid seepage. Finally, the horizontal movement mechanism drives the push plate to transport the inspected tank onto the second conveyor belt via a connecting bridge. This device can automatically perform metal flaw detection and gas tightness testing on natural gas storage tanks. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a liquefied natural gas storage tank detection device according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of a neodymium magnet block in a liquefied natural gas storage tank detection device according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the rotary drive mechanism of a liquefied natural gas storage tank detection device according to an embodiment of the present utility model;

[0019] Figure 4This is a schematic diagram of the overall structure of the lifting mechanism of a liquefied natural gas storage tank detection device according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the horizontal moving mechanism of a liquefied natural gas storage tank detection device according to an embodiment of the present utility model.

[0021] In the picture:

[0022] 1. Water tank; 2. First conveyor belt; 3. Second conveyor belt; 4. Connecting bridge; 5. First gantry frame; 6. Rotary drive mechanism; 7. Lifting mechanism; 8. Ultrasonic flaw detection sensor; 9. Second gantry frame; 10. Horizontal moving mechanism; 11. Push plate; 21. Conveyor belt; 22. Neodymium magnet block; 61. First servo motor; 62. Worm gear; 63. Worm wheel; 71. Rotating rod; 72. Second servo motor; 73. Lead screw; 74. Lead screw sleeve; 101. Third servo motor; 102. Threaded rod; 103. Threaded sleeve. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, a liquefied natural gas storage tank detection device is provided.

[0025] Please refer to the instruction manual appendix. Figures 1-5 According to an embodiment of the present invention, a liquefied natural gas storage tank testing device includes a water tank 1. A first conveyor belt 2 is installed on the inner side of the water tank 1, and a second conveyor belt 3 is installed on the rear side of the water tank 1. A connecting bridge 4 is installed between the first conveyor belt 2 and the second conveyor belt 3. A first gantry frame 5 is fixedly installed on the left outer side of the water tank 1, and a second gantry frame 9 is fixedly installed on the right outer side of the water tank 1. A rotary drive mechanism 6 is installed at the top of the first gantry frame 5, and a lifting mechanism 7 is installed at the bottom of the rotary drive mechanism 6. An ultrasonic flaw detection sensor 8 is installed on the lifting mechanism 7. A horizontal moving mechanism 10 is installed at the upper end of the second gantry frame 9, and a push plate 11 is installed at the bottom of the horizontal moving mechanism 10.

[0026] The vacuum liquefied natural gas storage tank is placed on the first conveyor belt and attracted by neodymium magnets. After the first conveyor belt moves, the storage tank is submerged in the liquid in the water tank. The ultrasonic flaw detection sensor rotates and rises and falls around the storage tank by a rotary drive mechanism and a lifting mechanism to detect whether there are any hidden damages in the storage tank. The storage tank is submerged in liquid for a long time to check whether the liquid inside the storage tank has been soaked in. Finally, the horizontal moving mechanism drives the push plate to send the inspected storage tank to the second conveyor belt through the connecting bridge. This device can automatically complete the metal flaw detection and gas tightness detection of natural gas storage tanks.

[0027] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of this utility model, both the first conveyor belt 2 and the second conveyor belt 3 include a conveyor belt 21, and a neodymium magnet block 22 is fixedly installed on the inner side of the conveyor belt 21.

[0028] The vacuum tank is thus attracted and positioned by the neodymium magnet block 22.

[0029] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of this utility model, the rotary drive mechanism 6 includes a first servo motor 16, and a worm gear 62 is fixedly installed at the end of the main shaft of the first servo motor 16. A worm wheel 63 is meshed with the outer side of the worm gear 62.

[0030] The first servo motor 16 drives the worm gear 62 to rotate, and the worm gear 62 drives the worm wheel 63 to rotate.

[0031] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of this utility model, the lifting mechanism 7 includes a rotating rod 71, a second servo motor 72 is fixedly installed at the top end of the rotating rod 71, a lead screw 73 is fixedly installed at the end of the main shaft of the second servo motor 72, and a lead screw sleeve 74 is helically connected to the outer side of the lead screw 73.

[0032] The second servo motor 72 drives the lead screw 73 to rotate, and the lead screw 73 drives the lead screw sleeve 74 to rotate and move in the rotating rod 71.

[0033] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of the present invention, the horizontal moving mechanism 10 includes a third servo motor 101, and a threaded rod 102 is fixedly installed at the end of the main shaft of the third servo motor 101. A threaded sleeve 103 is helically connected to the outer side of the threaded rod 102.

[0034] The third servo motor 101 drives the threaded rod 102 to rotate, and the threaded rod 102 drives the threaded sleeve 103 to rotate and move in the second gantry 9.

[0035] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of this utility model, an inlet plug is installed on the upper right side of the water tank 1, and an outlet plug is installed on the lower right side of the water tank 1.

[0036] This makes it convenient to fill or drain the water tank.

[0037] In one embodiment, please refer to the appendix to the specification. Figures 1-5 As a further embodiment of this utility model, the first conveyor belt 2 and the second conveyor belt 3 are arranged in parallel, and a drive motor is provided on the rear side of the left roller shaft of both the first conveyor belt 2 and the second conveyor belt 3.

[0038] In use, the vacuum liquefied natural gas storage tank is placed on the first conveyor belt and attracted by neodymium magnets. After the first conveyor belt moves, the storage tank is submerged in the liquid in the water tank. The ultrasonic flaw detection sensor rotates and rises and falls around the storage tank by the rotary drive mechanism and the lifting mechanism to detect whether there are any hidden damages in the storage tank. The storage tank is submerged in liquid for a long time to check whether the liquid inside the storage tank has been soaked in. Finally, the horizontal moving mechanism drives the push plate to send the tested storage tank to the second conveyor belt through the connecting bridge. This device can automatically complete the metal flaw detection and gas tightness detection of natural gas storage tanks.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquefied natural gas storage tank detection device, comprising a water tank (1), characterized in that: A first conveyor belt (2) is installed on the inner side of the water tank (1), and a second conveyor belt (3) is installed on the rear side of the water tank (1). A connecting bridge (4) is installed between the first conveyor belt (2) and the second conveyor belt (3). A first gantry frame (5) is fixedly installed on the left side of the outer side of the water tank (1), and a second gantry frame (9) is fixedly installed on the right side of the outer side of the water tank (1). A rotary drive mechanism (6) is installed at the top of the first gantry frame (5), and a lifting mechanism (7) is installed at the bottom of the rotary drive mechanism (6). An ultrasonic flaw detection sensor (8) is installed on the lifting mechanism (7). A horizontal moving mechanism (10) is installed at the upper end of the second gantry frame (9), and a push plate (11) is installed at the bottom of the horizontal moving mechanism (10).

2. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: Both the first conveyor belt (2) and the second conveyor belt (3) include a conveyor belt (21), and a neodymium magnet block (22) is fixedly installed on the inner side of the conveyor belt (21).

3. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: The rotary drive mechanism (6) includes a first servo motor (16), and a worm gear (62) is fixedly installed at the end of the main shaft of the first servo motor (16). A worm wheel (63) is meshed with the outer side of the worm gear (62).

4. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: The lifting mechanism (7) includes a rotating rod (71), a second servo motor (72) is fixedly installed at the top of the rotating rod (71), a lead screw (73) is fixedly installed at the end of the main shaft of the second servo motor (72), and a lead screw sleeve (74) is helically connected to the outside of the lead screw (73).

5. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: The horizontal moving mechanism (10) includes a third servo motor (101), and a threaded rod (102) is fixedly installed at the end of the main shaft of the third servo motor (101). A threaded sleeve (103) is helically connected to the outer side of the threaded rod (102).

6. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: A water inlet plug is installed on the upper right side of the water tank (1), and a water outlet plug is installed on the lower right side of the water tank (1).

7. The liquefied natural gas storage tank detection device according to claim 1, characterized in that: The first conveyor belt (2) and the second conveyor belt (3) are arranged in parallel, and a drive motor is provided on the rear side of the left roller shaft of both the first conveyor belt (2) and the second conveyor belt (3).

Images