A super-large LNG cryogenic storage tank weld and tank surface flatness quality detector

Abstract

The present invention relates to the field of storage tank weld detectors, and in particular to a super-large LNG cryogenic storage tank weld and tank surface flatness quality detector. A laser emitter is provided on the top of the vertical travel module of the X-ray machine, and the laser emitter is provided on the top power supply housing. A damping plate is provided at the bottom of the laser emitter, and a base is provided on the damping plate. A rotating head is provided on the base, and a laser emitting point is provided at the middle point of the rotating head to emit infrared laser. A platform frame and a work frame are provided on the inner wall of the storage tank wall, and a laser receiving device is provided on the top of the work frame to receive the laser signal emitted by the laser emitter. The tank seam detection trolley rotates around the tank top, and the laser signal emitted by the laser emitter can be irradiated on the laser receiving panel. The flatness of the storage tank surface is detected by the horizontal motion trajectory of the laser signal on the laser receiving panel. At the same time, annular weld detection and longitudinal weld detection can also be performed on the inner wall of the storage tank.

Description

Technical Field

[0001] The present invention relates to the field of storage tank weld detectors, in particular to a detector for the weld and tank surface flatness quality of an ultra-large LNG cryogenic storage tank. Background Art

[0002] Ultra-large LNG cryogenic storage tank weld quality inspection is a key device to ensure the structural integrity and safety of the tank. Weld quality inspection of ultra-large LNG cryogenic storage tanks usually involves a variety of advanced technologies and equipment to ensure that the weld quality meets the design requirements.

[0003] The diameter of existing ultra-large LNG cryogenic storage tanks is very large, reaching 100 meters. At the same time, the height of the cryogenic storage tanks also exceeds 100 meters. When setting up the storage tank, pieces of welding plates are welded together to form a layer, and then welded again on the basis of this layer. Therefore, each time a layer of the tank is welded, the inner wall of the tank needs to be inspected for circumferential welds and welds between longitudinal welded plates.

[0004] Ultrasonic detection technology, digital radiography technology and vacuum leak detection technology are often used in existing technologies to detect tank welds. However, the above technologies have great limitations and cannot meet the requirements of weld detection of ultra-large LNG cryogenic storage tanks. In actual detection, due to the large size of LNG cryogenic storage tanks, the detection time is long and the detection is difficult. At the same time, since the storage tanks are welded layer by layer, the storage tanks on the same layer are welded together by pieces of metal plates. There is a problem that the height of the tanks on one layer is inconsistent, which affects the welding of the next layer. The existing weld detection device cannot detect this point, and the existing equipment cannot quickly detect this problem.

[0005] Therefore, it is particularly important to design a super-large LNG cryogenic storage tank weld quality detector that can detect the flatness of the tank surface and the horizontal and longitudinal welds of the tank. Summary of the Invention

[0006] This application provides a super-large LNG cryogenic storage tank weld and tank surface flatness quality detector, which adopts the following technical solution:

[0007] A super-large LNG cryogenic storage tank weld and tank surface flatness quality detector, with a tank seam detection trolley installed on the tank wall. The tank seam detection trolley includes a horizontal walking module, and an imaging plate vertical walking module and a X-ray machine vertical walking module are installed on both sides of the horizontal walking module;

[0008] A laser emitter is provided on the top of the vertical travel module of the X-ray machine. The laser emitter is provided on the top power supply housing. A damping plate is provided at the bottom of the laser emitter. A base is provided on the damping plate. A rotating head is provided on the base. A laser emitting point is provided at the middle point of the rotating head to emit infrared laser.

[0009] A platform frame and a work frame are provided on the inner wall of the storage tank wall. A laser receiving device is provided on the top of the work frame to receive the laser signal emitted by the laser transmitter. A laser receiving base is provided on the laser receiving device. A power control box is provided on the laser receiving base. Side panels are provided on the side walls of the power control box. A horizontal panel is provided between the side panels. The horizontal panel is connected to the power control box through a telescopic rod. A panel telescopic frame is provided on the horizontal panel. A rotating component and a laser receiving panel are provided on the panel telescopic frame. The laser receiving panel is provided with an infrared sensor that can feed back the received infrared light to the power control box for reception and processing through wireless transmission.

[0010] The tank seam detection trolley rotates around the tank top. The laser signal emitted by the laser transmitter can illuminate the laser receiving panel. The flatness of the tank surface is detected by the horizontal motion trajectory of the laser signal on the laser receiving panel.

[0011] The main vehicle side plate is provided with a main vehicle side plate, and the main vehicle side plate is U-shaped, and the main vehicle side plate is provided with two, and rollers are provided between the main vehicle side plates, and two rollers are provided on the left and right sides of the rollers, and the rollers are provided at the convex part of the U-shaped main vehicle side plate, and the rollers are installed on the tank wall. The main vehicle side is also provided with four support frame connecting rod splints, and an adjusting handwheel is provided at the bottom of the support frame connecting rod splint, and an adjusting screw is provided on the adjusting handwheel, and the adjusting screw passes through the bottom of the support frame connecting rod splint, and a cylindrical adjusting wheel is provided on the adjusting wheel. A supporting ball is provided on the adjusting wheel. Each support frame connecting rod splint is correspondingly provided, and the adjusting screw is controlled by turning the adjusting handwheel to rotate to achieve contact support of the supporting ball with the tank wall. A main engine reducer and a main vehicle servo motor are provided on one side of the main vehicle side plate, and the main engine reducer is connected to the roller through a pin shaft, providing power to the roller so that the roller rotates to drive the entire horizontal walking module to walk on the tank wall.

[0012] Optionally, a lifting structure, a tensioning device and an anti-falling device are provided on the imaging plate vertical walking module and the X-ray machine vertical walking module, a roller assembly is provided on the bottom of the imaging plate vertical walking module and the X-ray machine vertical walking module, an imaging plate bracket is provided on the imaging plate vertical walking module, two tracks are provided on the imaging plate bracket, hook plates are provided on both sides of the imaging plate bracket, hook openings are provided on the hook plates, and the hook openings are connected to the side panels of the main vehicle through the hook openings on the hook plates; a X-ray machine bracket is provided on the X-ray machine vertical walking module, two tracks are also provided on the X-ray machine bracket, a computer control panel is provided on the side of the X-ray machine bracket, and bracket hook plates are provided on both sides of the X-ray machine bracket, the bracket hook plates are provided with hook openings, and the bracket hook plates are buckled with the side panels of the main vehicle through the hook openings on the bracket hook plates.

[0013] Optionally, the imaging plate bracket of the imaging plate vertical walking module is hollow, and a fall arrester is provided on the top plate of the imaging plate bracket, a hole is provided on the fall arrester, and a fall arrester bracket is provided directly in front of the fall arrester hole, the middle of the fall arrester bracket is in the same straight line with the fall arrester hole, a pulley is provided on the fall arrester bracket, a steel wire rope extending from the fall arrester is stretched out from the hole, passes through the pulley on the fall arrester bracket and is downwardly provided to the imaging module on the imaging plate bracket, and a steel wire rope recovery and tensioning structure is provided in the fall arrester.

[0014] Optionally, an opening is provided on the top side of the imaging plate bracket, a reducer is provided on the inner side of the top, a servo motor is connected to the reducer, a worm spindle is provided on the side of the reducer, the worm spindle is provided on the bracket bearing seat, a driving sprocket is provided on the worm spindle, a chain is provided on the driving sprocket, and the driving sprocket partially extends beyond the opening on the top side of the imaging plate bracket, one side of the sprocket on the driving sprocket is on the outside of the imaging plate bracket, and the other side is on the inside of the imaging plate, an electrical housing of the imaging plate bracket is provided on the top of the fall arrester, and a control panel and a power supply assembly are provided inside.

[0015] Optionally, an opening is provided on the bottom of the imaging plate bracket, a tensioning device is provided at the opening, a sliding plate is provided on the bracket bottom plate at the bottom of the imaging plate bracket, a tensioning device support plate is provided on the sliding plate, the tensioning device support plate can be slid down on the sliding plate, and can also be fixed up and down with a pin shaft, a tensioning device nut is provided on the top of the tensioning device support plate, a tensioning device pressure plate is provided in the middle of the tensioning device support plate, a tensioning device pull rod is provided at the center of the tensioning device pressure plate, a thread is provided on the surface of the tensioning device pull rod, and the tensioning device pull rod The nut of the tensioning device is passed through, and an internal thread that cooperates with the tensioning device pull rod is provided at the penetration mouth of the tensioning device nut; rectangular holes are provided on both sides of the tensioning device support plate, and both ends of the tensioning device pressure plate are provided outside the rectangular holes on both sides of the tensioning device support plate. At the same time, a tensioning device connecting rod is provided at both ends of the tensioning device pressure plate, and a tensioning device clamping plate is provided at the other end of the tensioning device connecting rod. The tensioning device clamping plate is connected to a tensioning device limiting plate, and the tensioning device clamping plate and the tensioning device limiting plate are integrated, and the tensioning device limiting plate is provided in the middle of the tensioning device support plate.

[0016] Optionally, a driven sprocket is provided in the tensioning device limit plate, and the driven sprocket rotates in the tensioning device limit plate through a pin shaft, and the chain extending from the driving sprocket is provided on the driven sprocket, and the driven sprocket and the driving sprocket form a whole, so as to drive the imaging module to slide up and down, and the tensioning device nut is provided at the bottom of the tensioning device support plate and connected and fixed, and the tensioning device pressure plate can be driven to move by rotating the tensioning device pull rod, so that the tensioning device limit plate is also moved, and the distance between the driving sprocket and the driven sprocket is adjusted to achieve the tensioning of the chain, and blocks are provided above and below the imaging plate bracket, which can play a limiting role when the imaging module slides up and down.

[0017] Optionally, roller assemblies are provided at the bottom of the imaging plate bracket and the X-ray machine bracket, with two provided at the bottom of each of the imaging plate bracket and the X-ray machine bracket, for a total of four; the roller assemblies are provided with branch hooks, which are connected and fixed on the bottom of the imaging plate bracket and the X-ray machine bracket; the branch hooks are provided with branch splints, which are S-shaped in design, and are connected to the branch splints with a bracket pulley fixing seat, which is provided with a spring, and the bracket pulley fixing seat is connected and fixed to the bracket wheel through the spring.

[0018] Optionally, the imaging plate vertical travel module is provided with an imaging module, and the imaging module includes an imaging module base and an imaging plate. The imaging module base is rectangular in style, and an imaging module base bearing is provided on the imaging module base. At the same time, a number of movable openings are opened on the surface of the imaging module base. An electric push rod seat is provided in the imaging module base, and an electric push rod controller is provided on the side of the electric push rod seat. A push rod is provided in the electric push rod seat, and the electric push rod controller controls the telescopic movement of the push rod in the electric push rod seat. A signal processor and a linear bearing are provided on the back of the imaging plate.

[0019] Optionally, a radiation module is provided on the vertical travel module of the radiation machine, a control box fixing seat is provided on the radiation module, a control box is provided in the control box fixing seat, a radiation machine fixing plate is provided at the bottom, a radiation machine is provided between the radiation machine fixing plate and the control box fixing seat, the control box controls the radiation machine, one side of the radiation machine extends beyond the position of the radiation machine fixing plate, a radiation port is provided on the extending part of the radiation machine, and the radiation port is facing the imaging plate on the imaging module.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: a laser receiving device is arranged on a work frame on a platform frame inside a storage tank, and the laser transmitter on a detection trolley forms a whole for detecting the flatness of the surface of the storage tank. The detection trolley travels on the storage tank layer and the laser transmitter on the detection trolley emits an infrared laser to illuminate the laser receiving device. The laser receiving panel on the laser receiving device receives the infrared laser signal and forms an image. The detection trolley travels along the wall of the storage tank and forms an image of the infrared laser movement path on the laser receiving panel. When encountering undulations on the surface, the infrared laser ray will also fluctuate instantly on the movement trajectory of the laser receiving panel, indicating that the surface flatness here is uneven. The area is marked by an identification device for convenience for workers to find, and it is also immediately reported to the background control center.

[0021] The device can also detect the annular weld and the longitudinal weld at the same time, thus achieving a comprehensive detection of the welds inside the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying any creative work.

[0023] Figure 1 This is a diagram of the overall device of the present invention in use.

[0024] Figure 2 It is a structural diagram of the overall device of the present invention.

[0025] Figure 3 This is a diagram of the use status of the tank weld detector of the present invention.

[0026] Figure 4 It is a front view of the storage tank weld detector of the present invention.

[0027] Figure 5 It is a schematic diagram of the overall structure of the laser detector of the present invention.

[0028] Figure 6 It is a stereoscopic diagram of the tank weld detector of the present invention.

[0029] Figure 7 It is the overall structural diagram of the horizontal walking module of the present invention.

[0030] Figure 8 This is a structural diagram of the horizontal walking module from another perspective of the present invention.

[0031] Figure 9 It is a side view of the horizontal walking module of the present invention.

[0032] Figure 10 It is a schematic diagram of the overall structure of the imaging plate vertical travel module of the present invention.

[0033] Figure 11 It is a schematic diagram of the overall structure of the vertical travel module of the X-ray machine of the present invention.

[0034] Figure 12 It is a schematic diagram of the top structure of the vertical travel module of the imaging plate of the present invention.

[0035] Figure 13 It is a schematic diagram of the bottom structure of the vertical travel module of the imaging plate of the present invention.

[0036] Figure 14 This is a demonstration diagram of the tensioning structure on the vertical travel module of the imaging plate of the present invention.

[0037] Figure 15 It is a stereoscopic diagram of the imaging plate of the present invention.

[0038] Figure 16 This is a diagram showing the imaging plate of the present invention in use.

[0039] Figure 17 Schematic diagram of the back of the imaging plate of the present invention.

[0040] Figure 18 It is a structural diagram of the imaging plate rear seat of the present invention.

[0041] Figure 19 It is a schematic diagram of the overall structure of the ray machine of the present invention.

[0042] Figure 20 It is a schematic diagram of the back structure of the X-ray machine of the present invention.

[0043] Figure 21 It is a structural schematic diagram of the pulley block of the present invention.

[0044] Figure 22 It is a schematic diagram of the overall structure of the laser signal receiver of the present invention.

[0045] Figure 23 This is a demonstration diagram of the laser transmitter of the present invention emitting infrared laser light to a laser receiving device.

[0046] In the figure: 1-tank wall, 2-horizontal walking module, 201-main vehicle side panel, 202-support frame connecting rod clamp, 203-adjusting wheel, 204-support ball, 205-adjusting handwheel, 206-host reducer, 207-main vehicle servo motor, 208-roller, 209-electrical box, 3-imaging board vertical walking module, 301-imaging board bracket, 302-hook plate, 303-imaging board bracket electrical housing, 304-anti-fall device, 305-anti-fall device bracket, 306-reducer, 307-worm spindle, 308 -Servo motor, 309-track, 310-driving sprocket, 311-bracket bearing seat, 312-tensioning device pull rod, 313-tensioning device nut, 314-tensioning device pressure plate, 315-driven sprocket, 316-tensioning device connecting rod, 317-tensioning device clamping plate, 318-tensioning device limit plate, 319-tensioning device support plate, 320-bracket bottom plate, 321-chain, 322-block, 5-imaging module, 501-imaging module base, 502-imaging board, 503-imaging module base bearing, 504-electric push rod seat, 505-electric push rod controller, 506-track slider A, 507-chain link plate A, 508-top rod, 509-linear bearing, 6-ray module, 601-control box fixing seat, 602-control box, 603-fixing plate, 604-chain link plate B, 605-track slider B, 606-ray machine, 607-ray port, 608-ray machine fixing plate, 7-ray machine vertical travel module, 701-ray machine bracket, 702-bracket hook plate, 703-computer control board , 8-laser transmitter, 801-base, 802-rotating head, 803-laser emission point, 804-damping plate, 9-laser receiving device, 901-laser receiving panel, 902-rotating component, 903-panel telescopic frame, 904-telescopic rod, 905-power control box, 906-side panel, 907-laser receiving base, 1001-branch hook, 1002-branch splint, 1003-branch pulley fixing seat, 1004-spring, 1005-branch wheel, 11-working frame, 1101-electrical control box. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0048] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0050] An embodiment of the present invention provides a detector for the weld seam and tank surface flatness of an ultra-large LNG cryogenic storage tank.

[0051] like Figure 1-22As shown, a tank seam detection trolley is provided on the tank wall 1, and the tank seam detection trolley includes a horizontal walking module 2, an imaging plate vertical walking module 3, and a X-ray machine vertical walking module 7; a main vehicle side panel 201 is provided on the horizontal walking module 2, and the main vehicle side panel 201 is U-shaped. There are two main vehicle side panels 201, and rollers 208 are provided between the main vehicle side panels 201. There are two rollers 208 on the left and right, and the rollers 208 are provided at the protrusions of the U-shaped main vehicle side panels 201. The rollers 208 are installed on the tank wall 1, and four support frame connecting rod splints 202 are also provided on the side of the main vehicle side panel 201. The bottom of the support frame connecting rod splint 202 is provided with an adjusting handwheel 205, and an adjusting screw is provided on the adjusting handwheel 205. The adjusting screw passes through the bottom of the support frame connecting rod splint 202, and a cylindrical adjusting wheel 203 is provided on the other side of the adjusting screw. A support ball 204 is provided on 03, and each support frame connecting rod clamp 202 is provided with a corresponding setting. By turning the adjusting hand wheel 205 to control the rotation of the adjusting screw, the support ball 204 is supported in contact with the tank wall 1. A main reducer 206 and a main vehicle servo motor 207 are provided on one side of the main vehicle side plate 201. The main reducer 206 is connected to the roller 208 through a pin shaft, providing power to the roller 208 so that the roller 208 rotates to drive the entire horizontal walking module 2 to walk on the tank wall 1. The roller 208 serves as the main roller, and the roller 208 on the other side is the driven wheel; an electrical box 209 is provided on the opposite side of the main reducer 206 and the main vehicle servo motor 207, which has a power supply and a control board circuit inside, and is connected to the main vehicle servo motor 207 to provide power to the motor and control the walking of the entire horizontal walking module 2.

[0052] The imaging board vertical walking module 3 and the X-ray machine vertical walking module 7 are arranged on both sides of the horizontal walking module 2; the imaging board vertical walking module 3 is provided with an imaging board bracket 301, and the imaging board bracket 301 is provided with two tracks 309, and hook plates 302 are provided on both sides of the imaging board bracket 301, and there are hook holes on the hook plates 302, which are connected to the main vehicle side plates 201 through the hook holes on the hook plates 302; the X-ray machine vertical walking module 7 is provided with a X-ray machine bracket 701, and the X-ray machine bracket 701 is also provided with two tracks 309. 9. A computer control panel 703 is provided on the side of the X-ray machine bracket 701. At the same time, bracket hook plates 702 are provided on both sides of the X-ray machine bracket 701. The bracket hook plates 702 are provided with hook openings, which are engaged with the main vehicle side plates 201 through the hook openings on the bracket hook plates 702. The imaging board vertical walking module 3 and the X-ray machine vertical walking module 7 are respectively provided on both sides of the horizontal walking module 2; a sliding imaging module 5 is provided on the imaging board vertical walking module 3, and a X-ray module 6 is provided on the X-ray machine vertical walking module 7.

[0053] The vertical walking module 3 of the imaging plate and the vertical walking module 7 of the X-ray machine are both provided with a lifting structure, a tensioning device and an anti-falling device; this article describes the vertical walking module 3 of the imaging plate. The imaging plate bracket 301 of the vertical walking module 3 is hollow, and a fall arrester 304 is provided on the top plate of the imaging plate bracket 301. The fall arrester 304 is provided with a hole, and a fall arrester bracket 305 is provided in front of the hole of the fall arrester 304. The middle of the fall arrester bracket 305 is in the same straight line with the hole of the fall arrester 304, and a pulley is provided on the fall arrester bracket 305. A steel wire rope extends from the fall arrester 304, is stretched out from the hole, passes through the pulley on the fall arrester bracket 305 and is downwardly provided to the imaging module 5 on the imaging plate bracket 301, and a steel wire rope recovery and tensioning structure is provided in the fall arrester 304. When the imaging module 5 encounters a situation that is fast When sliding down quickly, the steel wire rope on the anti-fall device 304 is also quickly pulled. At this time, the anti-fall device 304 quickly locks the steel wire rope to prevent the imaging module 5 from sliding down and causing damage to the equipment, and pulls the imaging module 5 in case of an emergency; an opening is provided on the top side of the imaging plate bracket 301, and a reducer 306 is provided on the inner side of the top. The reducer 306 is connected to a servo motor 308, and a worm main shaft 307 is provided on the side of the reducer 306. The worm main shaft 307 is provided on the bracket bearing seat 311, and a driving sprocket 310 is provided on the worm main shaft 307. The driving sprocket 310 is provided with a chain 321, and the driving sprocket 310 partially exceeds the opening on the top side of the imaging plate bracket 301, so one side of the chain 321 on the driving sprocket 310 is on the outside of the imaging plate bracket 301, and the other side is on the inside of the imaging plate bracket 301. An imaging plate support electrical housing 303 is provided on the top of the anti-fall device 304, and a control panel and a power supply assembly are provided inside the anti-fall device 304 and the servo motor 308, and provide power for them.

[0054] An opening is provided at the bottom of the imaging plate bracket 301, and a tensioning device is provided at the opening. A sliding plate is provided on the bracket base plate 320 at the bottom of the imaging plate bracket 301, and a tensioning device support plate 319 is provided on the sliding plate. The tensioning device support plate 319 can be slid and taken down on the sliding plate, and can also be fixed up and down with a pin shaft. A tensioning device nut 313 is provided on the top of the tensioning device support plate 319, and a tensioning device pressure plate 314 is provided in the middle of the tensioning device support plate 319. A tensioning device pull rod 312 is provided at the center of the tensioning device pressure plate 314, and a thread is provided on the surface of the tensioning device pull rod 312. The tensioning device pull rod 312 passes through the tensioning device nut 313, and the tensioning device nut 313 is provided with an internal thread that cooperates with the tensioning device pull rod 312 at the penetration port. Rectangular holes are provided on both sides of the tensioning device support plate 319, and both ends of the tensioning device pressure plate 314 are provided outside the rectangular holes on both sides of the tensioning device support plate 319. At the same time, a tensioning device connecting rod 316 is provided at both ends of the tensioning device pressure plate 314, and a tensioning device clamping plate 317 is provided at the other end of the tensioning device connecting rod 316. The tensioning device clamping plate 317 is connected to the tensioning device limiting plate 318, and the tensioning device clamping plate 317 and the tensioning device limiting plate 318 are integrated into one body. The tensioning device limiting plate 318 is provided in the middle of the tensioning device support plate 319; a driven sprocket is provided in the tensioning device limiting plate 318 The driven sprocket 315 rotates within the tensioning device limit plate 318 via a pin. A chain 321 extending from the driving sprocket 310 is mounted on the driven sprocket 315. The driven sprocket 315 and the driving sprocket 310 form a single unit, driving the imaging module 5 to slide up and down. Furthermore, because the tensioning device nut is fixedly attached to the bottom of the tensioning device support plate 319, the tensioning device pressure plate 314 can be moved by rotating the tensioning device pull rod 312, thereby also moving the tensioning device limit plate 318. This adjusts the spacing between the driving sprocket 310 and the driven sprocket 315 to achieve chain tensioning. Stoppers 322 are also provided above and below the imaging board bracket 301 to limit the imaging module 5 as it slides up and down.

[0055] The structural design of the X-ray machine bracket 701 of the X-ray machine vertical travel module 7 is the same as that of the imaging plate bracket 301, and will not be repeated here.

[0056] A roller assembly is provided at the bottom of the imaging plate bracket 301 and the X-ray machine bracket 701, with two rollers provided at the bottom of the imaging plate bracket 301 and the X-ray machine bracket 701, for a total of four; the roller assembly is provided with a branch hook 1001, which is provided on the bottom of the imaging plate bracket 301 and the X-ray machine bracket 701 and connected and fixed; the branch hook 1001 is provided with a branch splint 1002, which is designed in an S-shaped style, and is connected to the branch splint 1002. A bracket pulley fixing seat 1003 is provided on the bracket pulley fixing seat 1003, and a spring 1004 is provided on the bracket pulley fixing seat 1003. The bracket pulley fixing seat 1003 is connected and fixed to the bracket wheel 1005 through the spring 1004. When in use, the bracket wheel 1005 contacts the tank wall 1, and the bracket wheel 1005 slides on the tank wall 1. At the same time, the bracket wheel 1005 can better contact the surface of the tank wall 1 due to the design of the spring 1004.

[0057] The imaging module 5 is mounted on the track 309 of the imaging board vertical travel module 3. The imaging module 5 includes an imaging module base 501 and an imaging board 502. The imaging module base 501 is rectangular and equipped with an imaging module base bearing 503. Several movable openings are also provided on the surface of the imaging module base 501. An electric push rod seat 504 is mounted within the imaging module base 501. An electric push rod controller 505 is mounted on the side of the electric push rod seat 504. A push rod 508 is mounted within the electric push rod seat 504. The electric push rod controller 505 controls the extension and retraction of the push rod 508 within the electric push rod seat 504. A signal processor and linear bearing 509 are mounted on the back of the imaging board 502. The linear bearing 509 is mounted and movable within the imaging module base bearing 503. The extension and retraction of the push rod 508 drives the entire movement of the imaging board 502. The provision of the linear bearing 509 ensures that the imaging board 502 is more securely mounted on the imaging module base 501. The imaging module base 501 is generally concave in shape, and a number of track sliders A506 are provided on the surface of the inner concave part. The track sliders A506 are provided on the track 309 of the imaging plate vertical travel module 3. A chain link plate A507 is also provided. The chain link plate A507 is connected and fixed to the chain 321, so that the movement of the chain 321 drives the imaging module 5 to move on the imaging plate vertical travel module 3.

[0058] The ray module 6 is arranged on the vertical travel module 7 of the ray machine, and a control box fixing seat 601 is provided on the ray module 6. A control box 602 is provided in the control box fixing seat 601, and a ray machine fixing plate 608 is provided at the bottom. A ray machine 606 is provided between the ray machine fixing plate 608 and the control box fixing seat 601. The control box 602 controls the ray machine 606. One side of the ray machine 606 extends beyond the position of the ray machine fixing plate 608. A ray port 607 is provided on the protruding part of the ray machine 606, and the ray port 607 is facing the imaging plate 502 on the imaging module 5; a fixing plate 603 is provided on the back side of the control box fixing seat 601, and several track sliders B605 are provided on both sides of the fixing plate 603. The track sliders B605 are set on the track of the vertical travel module 7 of the ray machine to slide. A chain link plate B604 is provided in the middle of the fixing plate 603. The chain link plate B604 is connected and fixed to the chain 321, thereby driving the ray module 6 to slide up and down.

[0059] A laser emitter 8 is mounted on top of the X-ray machine's vertical travel module 7. Laser emitter 8 is mounted on the top power supply housing. A damping plate 804 is mounted on the bottom of the laser emitter 8. A base 801 is mounted on the damping plate 804. Four bolt holes are located at the corners of base 801, and bolts are installed in these bolt holes to securely connect the damping plate 804 to the base 801. A rotating head 802 is mounted on the base 801, and a laser emission point 803 is located at its midpoint. The bottom of the rotating head 802 is secured to the base 801. Both the rotating head 802 and the base 801 are circular, allowing the rotating head 802 to rotate within the base 801. A laser emission source is located within the rotating head 802 to emit infrared laser light. A control center and power supply are located within the top power supply housing of the X-ray machine's vertical travel module 7, providing power to the laser emitter 8 and controlling laser emission.

[0060] When welding the tank wall, it is necessary to set up a platform frame for workers to weld the weld position. A work frame 11 will be placed on the platform frame to facilitate workers to weld longitudinal and transverse. A laser receiving device 9 is provided on the top of the work frame 11, and a laser receiving base 907 is provided on the laser receiving base 907. A power control box 905 is provided on the laser receiving base 907. Side panels 906 are provided on the side walls of the power control box 905. A horizontal plate is provided between the side panels 906. A rotating shaft is provided between the horizontal plate and the side panels 906, and the horizontal plate can rotate. Two telescopic rods 904 are provided on the lower side of the horizontal plate, and the telescopic rods 904 are connected to the horizontal plate and the power control box 905 up and down. A panel telescopic frame 903 is provided on the top of the horizontal plate, and a rotating component 902 and a laser receiving panel 901 are provided on the panel telescopic frame 903. An infrared sensor is provided behind the laser receiving panel 901, which can feed back the received infrared light to the power control box 905 through a Bluetooth signal. The power control box 905 receives the signal and processes it. A level sensor is provided in the laser receiving panel 901. When the laser receiving panel 901 is in a tilted position, the sensor sends a signal to the power control box 905 via Bluetooth. The control processor inside the power control box 905 receives the signal and makes feedback to control the two telescopic rods 904 to adjust to a horizontal state. The laser receiving panel 901 is divided into a receiving area and an exceeding area. The receiving area is the middle part of the laser receiving panel 901, and the exceeding area is on the outer circle of the receiving area. The infrared light emitted by the laser transmitter 8 is irradiated onto the laser receiving panel 901, and the infrared laser emitted by the laser transmitter 8 is at the laser receiving area. The receiving panel 901 marks and records, and when the infrared light irradiates the excess area, the signal is transmitted to the power control box 905. After processing, the power control box 905 controls the rotating component 902 to rotate, driving the laser receiving panel 901 to rotate and irradiate the infrared light to the receiving area; when the infrared laser signal received by this device is this straight line, it means that the flatness is consistent. When there is a deviation in the flatness, the infrared laser irradiation light will show ups and downs, indicating that the tank wall here is undulating; and the infrared laser movement route is sent to the background center, so that the staff of the background center can observe the detection situation in real time.

[0061] The tank seam detection trolley rotates around the tank top, and the laser signal emitted by the laser transmitter 8 can always be irradiated on the laser receiving panel 901. The flatness of the tank surface is detected by the horizontal motion trajectory of the laser signal on the laser receiving panel 901.

[0062] At the same time, a marking device can be set on the vertical travel module 7 of the X-ray machine. When the laser infrared movement signal received on the laser receiving panel 901 exceeds a predetermined threshold, the signal is sent to the marking device via Bluetooth. The marking device quickly sprays a mark to facilitate staff to find it.

[0063] The laser receiving device 9 is set on the work frame 11. When the workers finish welding one layer, the work frame 11 on the platform frame quickly sets up the laser receiving device 9 on the top. At the same time, the workers evacuate the work area. The work frame 11 is placed on the platform frame to serve as a benchmark and is used as a reference. The trajectory of the laser on the laser receiving device can help determine whether there is a deviation in the flatness of the entire tank layer. At the same time, a panel telescopic frame 903 is set on the laser receiving device to more conveniently adjust the height of the laser receiving panel 901. According to the actual situation, the laser emitted by the laser transmitter 8 is directly projected onto the laser receiving panel 901. A damping plate 804 is set on the ground of the laser transmitter 8 to reduce the jitter of the laser transmitter 8 during the movement of the detector, thereby reducing errors. There is a laser signal error range in the background system, which can deal with the errors caused by the movement of the detector and the rotation of the laser receiving panel 901, which may cause system misjudgment.

[0064] Working principle: The horizontal walking module 2 is mounted on the tank wall 1, and the main vehicle reducer 206 and the main vehicle servo motor 207 cooperate with each other to drive the roller 208 to walk on the wall. The imaging plate vertical walking module 3 and the X-ray machine vertical walking module 7 are respectively arranged on both sides of the horizontal walking module 2, that is, the two modules are arranged on the inner and outer sides of the tank. Both modules are provided with a lifting structure, a tensioning device and an anti-falling device. The two modules are respectively provided with an imaging module 5 and a X-ray module 6. The X-ray port 607 of the X-ray machine 606 on the X-ray module 6 emits rays to irradiate the weld of the tank wall. The imaging plate 502 on the imaging module 5 extends out to take a film and image, and sends the structure to the background control center for processing through a 5G signal; the lifting device set in the imaging plate vertical walking module 3 and the X-ray machine vertical walking module 7 can detect the longitudinal weld, and the annular weld of the same layer can be detected by the movement of the horizontal walking module 2. In the weld detection, the flatness of the tank layer after welding is also detected by the cooperation of the laser transmitter 8 and the laser receiving device 9.

[0065] like Figure 23 As shown in the demonstration diagram, the inspection trolley is mounted on the tank wall 1. The inner wall of the tank is equipped with layers of platforms, each of which is equipped with a workbench. Laser beams are emitted from the laser emitter on the inspection trolley and illuminate the laser receiver 9 on the workbench. The inspection trolley moves along the tank roof, and the laser beam always illuminates the laser receiver 9. Layers of platforms are set up inside the tank, and a new platform is erected after each welded layer. The spacing between the platforms is 7-8 meters. The overall height of the tank is over 100 meters, and the diameter of the tank also reaches 100 meters.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference numerals in the claims should not be construed as limiting the claim to which they relate.

[0067] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A super-large LNG cryogenic storage tank weld and tank surface flatness quality detector, wherein a tank seam detection trolley is provided on the tank wall (1), and is characterized in that: The tank seam inspection trolley comprises a horizontal walking module (2), and an imaging plate vertical walking module (3) and a X-ray machine vertical walking module (7) are provided on both sides of the horizontal walking module (2); A laser emitter (8) is provided on the top of the vertical travel module (7) of the ray machine. The laser emitter (8) is provided on the top power supply housing. A damping plate (804) is provided on the bottom of the laser emitter (8). A base (801) is provided on the damping plate (804). A rotating head (802) is provided on the base (801). A laser emitting point (803) is provided at the middle point of the rotating head (802) to emit infrared laser. A platform frame and a work frame (11) are provided on the inner wall of the storage tank wall (1), a laser receiving device (9) is provided on the top of the work frame (11) to receive the laser signal emitted by the laser transmitter (8), a laser receiving base (907) is provided on the laser receiving device (9), a power control box (905) is provided on the laser receiving base (907), side panels (906) are provided on the side walls of the power control box (905), a horizontal plate is provided between the side panels (906), the horizontal plate is connected to the power control box (905) through a telescopic rod (904), a panel telescopic frame (903) is provided on the horizontal plate, a rotating component (902) and a laser receiving panel (901) are provided on the panel telescopic frame (903), and the laser receiving panel (901) is provided with an infrared sensor that can feed back the received infrared light to the power control box (905) through wireless transmission for reception and processing; The tank seam detection trolley rotates around the tank top, and the laser signal emitted by the laser transmitter (8) can be irradiated on the laser receiving panel (901). The flatness of the tank surface is detected by the horizontal motion trajectory of the laser signal on the laser receiving panel (901). A lifting structure, a tensioning device and an anti-falling device are provided on the imaging plate vertical walking module (3) and the X-ray machine vertical walking module (7). A roller assembly is provided on the bottom of the imaging plate vertical walking module (3) and the X-ray machine vertical walking module (7). An imaging plate bracket (301) is provided on the imaging plate bracket (301). Two tracks (309) are provided on the imaging plate bracket. Hook plates (302) are provided on both sides of (301), and hook openings are provided on the hook plates (302), which are buckled and connected to the main vehicle side plates (201) through the hook openings on the hook plates (302); a ray machine bracket (701) is provided on the vertical walking module (7) of the ray machine, and two tracks (309) are also provided on the ray machine bracket (701), and a computer control panel (703) is provided on the side of the ray machine bracket (701). At the same time, bracket hook plates (702) are provided on both sides of the ray machine bracket (701), and hook openings are provided on the bracket hook plates (702), which are buckled with the main vehicle side plates (201) through the hook openings on the bracket hook plates (702).

2. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 1 is characterized by: A main vehicle side plate (201) is provided on the horizontal walking module (2), the main vehicle side plate (201) is U-shaped, and two main vehicle side plates (201) are provided. A roller (208) is provided between the main vehicle side plates (201), and two rollers (208) are provided on the left and right. The rollers (208) are provided at the protrusions of the U-shaped main vehicle side plate (201). The rollers (208) are installed on the tank wall (1). Four support frame connecting rod clamps (202) are also provided on the side of the main vehicle side plate (201). An adjusting hand wheel (205) is provided at the bottom of the support frame connecting rod clamp (202). An adjusting screw is provided on the adjusting hand wheel (205). The adjusting screw passes through the support frame connecting rod clamp (202). ) bottom, a cylindrical adjusting wheel (203) is provided on the other side of the adjusting screw, and a supporting ball (204) is provided on the adjusting wheel (203), and each supporting frame connecting rod clamp (202) is provided with a corresponding arrangement, and the adjusting screw is controlled to rotate by rotating the adjusting hand wheel (205) to realize the contact support of the supporting ball (204) on the tank wall (1), and a main machine reducer (206) and a main machine servo motor (207) are provided on one side of the main vehicle side plate (201), and the main machine reducer (206) is connected to the roller (208) through a pin shaft, providing power to the roller (208) so that the roller (208) rotates to drive the entire horizontal walking module (2) to walk on the tank wall (1).

3. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 1 is characterized by: The imaging plate bracket (301) of the imaging plate vertical walking module (3) is hollow, and a fall arrester (304) is provided on the top plate of the imaging plate bracket (301), and a hole is provided on the fall arrester (304). A fall arrester bracket (305) is provided in front of the hole of the fall arrester (304), and the middle of the fall arrester bracket (305) is in the same straight line as the hole of the fall arrester (304). A pulley is provided on the fall arrester bracket (305), and a steel wire rope extending from the fall arrester (304) is stretched out from the hole, passes through the pulley on the fall arrester bracket (305), and is downwardly provided to the imaging module (5) on the imaging plate bracket (301). A steel wire rope recovery and tensioning structure is provided in the fall arrester (304).

4. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 3 is characterized by: An opening is provided on the top side of the imaging plate bracket (301), and a reducer (306) is provided on the inner side of the top. The reducer (306) is connected to a servo motor (308). A worm main shaft (307) is provided on the side of the reducer (306), and the worm main shaft (307) is provided on the bracket bearing seat (311). A driving sprocket (310) is provided on the worm main shaft (307), and a chain (321) is provided on the driving sprocket (310). The driving sprocket (310) partially protrudes from the opening on the top side of the imaging plate bracket (301). One side of the chain (321) on the driving sprocket (310) is outside the imaging plate bracket (301), and the other side is inside the imaging plate bracket (301). An imaging plate bracket electrical housing (303) is provided on the top of the anti-fall device (304), and a control panel and a power supply component are provided inside.

5. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 4 is characterized by: An opening is provided at the bottom of the imaging plate bracket (301), and a tensioning device is provided at the opening. A sliding plate is provided on the bracket bottom plate (320) at the bottom of the imaging plate bracket (301), and a tensioning device support plate (319) is provided on the sliding plate. The tensioning device support plate (319) is slid down on the sliding plate or fixed up and down with a pin shaft. A tensioning device nut (313) is provided on the top of the tensioning device support plate (319), and a tensioning device pressure plate (314) is provided in the middle of the tensioning device support plate (319). A tensioning device pull rod (312) is provided at the center of the tensioning device pressure plate (314), and a thread is provided on the surface of the tensioning device pull rod (312). The tensioning device pull rod (312) passes through the tensioning device nut (313). ), an internal thread cooperating with the tensioning device pull rod (312) is provided at the through-opening of the tensioning device nut (313); rectangular holes are provided on both sides of the tensioning device support plate (319), and both ends of the tensioning device pressure plate (314) are provided outside the rectangular holes on both sides of the tensioning device support plate (319), and at the same time, a tensioning device connecting rod (316) is provided at both ends of the tensioning device pressure plate (314), and a tensioning device clamping plate (317) is provided at the other end of the tensioning device connecting rod (316), and the tensioning device clamping plate (317) is connected to the tensioning device limiting plate (318), and the tensioning device clamping plate (317) and the tensioning device limiting plate (318) are formed into one body, and the tensioning device limiting plate (318) is provided in the middle of the tensioning device support plate (319).

6. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 5, characterized in that: A driven sprocket (315) is provided in the tensioning device limit plate (318), and the driven sprocket (315) rotates in the tensioning device limit plate (318) through a pin shaft. A chain (321) extending from the driving sprocket (310) is provided on the driven sprocket (315), and the driven sprocket (315) and the driving sprocket (310) form a whole, thereby driving the imaging module (5) to slide up and down. The tensioning device nut (313) is provided on the tensioning device limit plate (318). The bottom of the device support plate (319) is connected and fixed, and the tensioning device pressure plate (314) is driven to move by rotating the tensioning device pull rod (312), thereby moving the tensioning device limit plate (318), and adjusting the spacing between the driving sprocket (310) and the driven sprocket (315) to achieve chain tensioning. Stoppers (322) are provided above and below the imaging plate bracket (301), and the stoppers (322) play a limiting role when the imaging module (5) slides up and down.

7. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 1, characterized in that: The bottom of the imaging plate bracket (301) and the ray machine bracket (701) are provided with roller assemblies, two of which are provided at the bottom of each of the imaging plate bracket (301) and the ray machine bracket (701), for a total of four roller assemblies; the roller assemblies are provided with branch hooks (1001), which are provided on the bottom of the imaging plate bracket (301) and the ray machine bracket (701) for connection and fixation; the branch hooks (1001) are provided with branch splints (1002), which are designed in an S-shaped style, and the branch splints (1002) are connected to the support pulley fixing seat (1003), which is provided with a spring (1004), and the support pulley fixing seat (1003) is connected and fixed to the support wheel (1005) via the spring (1004).

8. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 1, characterized in that: The imaging plate vertical travel module (3) is provided with an imaging module (5), and the imaging module (5) includes an imaging module base (501) and an imaging plate (502). The imaging module base (501) is rectangular, and an imaging module base bearing (503) is provided on the imaging module base (501). At the same time, a plurality of movable openings are opened on the surface of the imaging module base (501). An electric push rod seat (504) is provided in the imaging module base (501), and an electric push rod controller (505) is provided on the side of the electric push rod seat (504). A push rod (508) is provided in the electric push rod seat (504), and the electric push rod controller (505) controls the extension and retraction of the push rod (508) in the electric push rod seat (504). A signal processor and a linear bearing (509) are provided on the back of the imaging plate (502).

9. The ultra-large LNG cryogenic storage tank weld and tank surface smoothness detector according to claim 8, characterized in that: A ray module (6) is provided on the ray machine vertical travel module (7), a control box fixing seat (601) is provided on the ray module (6), a control box (602) is provided in the control box fixing seat (601), a ray machine fixing plate (608) is provided at the bottom, a ray machine (606) is provided between the ray machine fixing plate (608) and the control box fixing seat (601), the control box (602) controls the ray machine (606), one side of the ray machine (606) exceeds the position of the ray machine fixing plate (608), and a ray port (607) is provided on the ray machine (606) at the exceeding portion, and the ray port (607) faces the imaging plate (502) on the imaging module (5).

Images