A quality detector for weld seams and ground deviation angles of ultra-large LNG cryogenic storage tanks

Abstract

The present invention relates to the field of cryogenic storage tank weld quality detectors, and in particular to a weld and ground deviation angle quality detector for ultra-large LNG cryogenic storage tanks. A tank seam detection trolley is provided on the tank wall, comprising a horizontal travel module, with imaging plate vertical travel modules and X-ray machine vertical travel modules provided on both sides of the horizontal travel module; a ground deviation angle detection module is provided on the bottom side of the main vehicle side panel, a bidirectional screw is provided in the base, and the sliding blocks on both sides are movable with each other by rotating the bidirectional screw, a fixed plate and an adjustment plate are connected by a lifting rod, and an infrared transmitter and a processing module are provided on the adjustment plate; the infrared transmitter emits an infrared laser to illuminate the ground, and the infrared laser is reflected on the ground and returned to the infrared receiver in the processing module. The processing module calculates the height distance between the inside and outside according to the time of the reflection, and then calculates the deviation angle of the tank wall to the ground according to the height distance between the inside and outside.

Description

Technical Field

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

[0002] Ultra-large LNG cryogenic storage tanks are equipment specially used to store liquefied natural gas (LNG). Their design and manufacturing require highly specialized technologies and materials. Ultra-large LNG cryogenic storage tanks usually adopt a double-layer vacuum structure. The inner liner is used to store low-temperature liquid LNG, and the space between the inner and outer layers is filled with pearlescent sand or vacuum wrapped to achieve thermal insulation.

[0003] Welding of ultra-large LNG cryogenic storage tanks is a critical step in the tank construction process. The welding quality and process directly affect the safety and service life of the tank. Tank welding involves welding metal plates together to form a single layer of tank. Layers are then welded upwards to form a complete tank.

[0004] However, in some coastal areas, such as Jiangsu and Zhejiang, ultra-large LNG cryogenic storage tanks are generally built close to the sea, and the surface sand layer in this area is prone to settlement. Because the construction area of ​​the tank is large, as the tank is erected layer by layer, and the overall weight of the tank increases, the deviation angle between the tank wall and the ground will not be completely vertical. There is a deviation angle between the metal welding plate and the ground, especially at the bottom, which is more important. If the inspection is not timely, as the tank is built upward layer by layer, it is easy to cause damage to the entire tank body or serious consequences, or require large-scale repairs. The existing inspection equipment for the welds of the tank welding parts does not have this function. If inspection is required, it must be carried out after completion, which is time-consuming and labor-intensive, and it is impossible to detect problems and provide feedback in time.

[0005] Therefore, it is particularly important to design a super-large LNG cryogenic storage tank weld and ground deviation angle quality detector that can detect the longitudinal or annular conditions of the tank weld, as well as the deviation angle between the tank surface and the ground, and can quickly alert the background staff. Summary of the Invention

[0006] This application provides a super-large LNG cryogenic storage tank weld and ground deviation angle quality detector, which adopts the following technical solutions:

[0007] A super-large LNG cryogenic storage tank weld and ground deviation angle quality detector, a tank seam detection trolley is arranged on the tank wall, the tank seam detection trolley includes a horizontal walking module, and imaging plate vertical walking modules and X-ray machine vertical walking modules are arranged on both sides of the horizontal walking module; a main vehicle side panel is arranged on the horizontal walking module, and side panel cameras are arranged on both sides of the main vehicle side panel, and a ground deviation angle detection module is arranged on the bottom side of the main vehicle side panel, and a base is arranged on the ground deviation angle detection module, and a notch is opened in the middle part of the base, and a bidirectional screw rod is arranged in the notch, and the spiral patterns at both ends of the bidirectional screw rod are opposite, and the bidirectional screw rod is rotated by a motor in the notch, and there are The sliding block is provided with an internal thread matching the two ends of the bidirectional screw rod. The sliding blocks on both sides are moved closer and farther away from each other through the rotation of the bidirectional screw rod. A fixed plate and an adjustment plate are provided on the sliding block. The fixed plate and the adjustment plate are connected by a lifting rod. A level sensor is provided on the adjustment plate. An infrared transmitter and a processing module are provided on the adjustment plate. An infrared receiver is also provided in the processing module. The infrared transmitter emits an infrared laser on the ground. The infrared laser is reflected on the ground and returned to the infrared receiver in the processing module. The processing module calculates the height distance between the inside and the outside according to the time of reflection. Then, the deviation angle of the tank wall to the ground is calculated based on the height distance between the inside and the outside.

[0008] Optionally, the horizontal walking module is provided with a main vehicle side panel, the horizontal walking module is provided with a main vehicle side panel, the main vehicle side panel is U-shaped, there are two main vehicle side panels, rollers are provided between the main vehicle side panels, there are two rollers on the left and right, the rollers are provided at the bulge of the U-shaped main vehicle side panel, the rollers are installed on the tank wall, and four support frame connecting rod splints are also provided on the side of the main vehicle side panel, and an adjusting handwheel is provided at the bottom of the supporting frame connecting rod splint, and an adjusting screw is provided on the adjusting handwheel, and the adjusting screw passes through At the bottom of the support frame connecting rod splint, a cylindrical adjusting wheel is set on the other side of the adjusting screw, and a supporting ball is set on the adjusting wheel. Each support frame connecting rod splint is set accordingly. By turning the adjusting handwheel to control the rotation of the adjusting screw, the supporting ball is supported in contact with the tank wall. The main engine reducer and the main engine servo motor are set on one side of the main vehicle side panel. 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 move on the tank wall.

[0009] 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.

[0010] 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.

[0011] 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 chain 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.

[0012] 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 is slid down on the sliding plate or 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 passes through the tensioning device The tightening device nut and the tensioning device nut are provided with an internal thread that cooperates with the tensioning device pull rod at the through-hole; 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: a radiation module and an imaging module are provided on the tank seam detection trolley, through which the position of the tank weld can be detected, and the detection range realizes annular detection and longitudinal detection, thereby improving the detection efficiency. At the same time, the detection accuracy is improved by using the digital radiation detection method.

[0017] The inspection trolley is equipped with a deviation detection module, which can detect the deviation angle between the tank wall and the ground while inspecting the weld. When the deviation angle exceeds the set value, the background staff will be immediately reminded. The design of this device solves the problem of the deviation angle of the tank to the ground in some coastal areas where the surface is prone to subsidence, and the staff can immediately make a comprehensive response.

[0018] This device can detect the deviation angle of the storage tank to the ground layer by layer, and can promptly notify the background workers of any problems for on-site processing, so that inspections can be carried out immediately. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a usage status diagram of the overall device of the present invention.

[0021] Figure 2 It is a front view of the storage tank weld detector of the present invention.

[0022] Figure 3 It is a schematic diagram of the overall structure of the laser detector of the present invention.

[0023] Figure 4 It is the overall structural diagram of the horizontal walking module of the present invention.

[0024] Figure 5 This is a structural diagram of the horizontal walking module from another perspective of the present invention.

[0025] Figure 6 It is a schematic diagram of the side camera of the horizontal walking module of the present invention.

[0026] Figure 7 It is a schematic diagram of the overall structure of the imaging plate vertical travel module of the present invention.

[0027] Figure 8It is a schematic diagram of the overall structure of the vertical travel module of the X-ray machine of the present invention.

[0028] Figure 9 It is a schematic diagram of the top structure of the vertical travel module of the imaging plate of the present invention.

[0029] Figure 10 It is a schematic diagram of the bottom structure of the vertical travel module of the imaging plate of the present invention.

[0030] Figure 11 This is a demonstration diagram of the tensioning structure on the vertical travel module of the imaging plate of the present invention.

[0031] Figure 12 It is a stereoscopic diagram of the imaging plate of the present invention.

[0032] Figure 13 This is a diagram showing the imaging plate of the present invention in use.

[0033] Figure 14 Schematic diagram of the back of the imaging plate of the present invention.

[0034] Figure 15 It is a structural diagram of the imaging plate rear seat of the present invention.

[0035] Figure 16 It is a schematic diagram of the overall structure of the ray machine of the present invention.

[0036] Figure 17 It is a schematic diagram of the back structure of the X-ray machine of the present invention.

[0037] Figure 18 It is a structural schematic diagram of the pulley block of the present invention.

[0038] Figure 19 It is a structural schematic diagram of the ground deviation angle detection module of the present invention.

[0039] Figure 20 This is the main view of the ground deviation angle detection module of the present invention.

[0040] Figure 21 It is a bottom view of the ground deviation angle detection module of the present invention.

[0041] 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 hand wheel, 206-host reducer, 207-main vehicle servo motor, 208-roller, 209-electrical box, 210-side panel camera, 211-side camera, 3-imaging board vertical walking module, 301-imaging board bracket, 302-hook plate, 303-imaging board bracket electrical housing, 304-anti-fall device, 30 5- fall arrester 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 card plate, 318- tensioning device limit plate, 319- tensioning device support plate, 320- bracket bottom plate, 321- chain, 322- block, 4- Ground deviation angle detection module, 401-base, 402-sliding block, 403-fixed plate, 404-lifting rod, 405-side plate, 406-infrared emitter, 407-processing module, 408-bidirectional screw, 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-fixed 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 walking module, 701-ray machine bracket, 702-branch hook plate, 703-computer control board, 1001-branch hook, 1002-branch splint, 1003-branch pulley fixing seat, 1004-spring, 1005-branch wheel. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] An embodiment of the present invention provides a weld and ground deviation angle quality detector for an ultra-large LNG cryogenic storage tank.

[0046] like Figure 1-21As 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] At the same time, a marking device can be set on the vertical travel module 7 of the X-ray machine. When a problem is detected at the weld, the marking device quickly sprays a mark to facilitate the staff to find it.

[0055] A ground deviation angle detection module 4 is provided on the bottom side of the main vehicle side panel 201, and a base 401 is provided on the ground deviation angle detection module 4. The base 401 is connected to the bottom sides of the two main vehicle side panels 201. A slot is provided in the middle part of the base 401, and a bidirectional screw rod 408 is provided in the slot. The spiral patterns at both ends of the bidirectional screw rod 408 are opposite. The bidirectional screw rod 408 is driven by a motor to rotate in the slot. Sliding blocks 402 are provided on both ends of the bidirectional screw rod 408. The sliding blocks 402 are provided with internal threads that match the two ends of the bidirectional screw rod 408. The sliding blocks 402 are rotated by the rotation of the bidirectional screw rod 408 to achieve the approach and distance between the sliding blocks 402 on both sides. A fixed plate 403 and an adjustment plate are provided, and the fixed plate 403 and the adjustment plate are connected by a lifting rod 404. A level sensor is provided on the adjustment plate to detect the level of the adjustment plate, and then transmit the information to the processing module 407 via a wireless signal. The adjustment plate is provided with an infrared transmitter 406 and a processing module 407. The processing module 407 is also provided with an infrared receiver, which can receive the reflected infrared laser to determine the distance. The fixed plate 403 and the adjustment plate are connected with a side plate 405. A pin is provided at the connection between the adjustment plate and the side, which enables the adjustment plate to rotate on the side via the pin. The processing module is provided with a battery and a control processor to process the transmitted signal. Side panel cameras 210 are provided on both sides of the main vehicle side panel 201. A side camera 211 is provided in the direction of movement of the detection vehicle to detect the vehicle's route when the vehicle is in motion.

[0056] Working principle: the side panel cameras 210 on both sides of the main vehicle side panel 201 first shoot the tank pipe wall, and transmit the captured information to the processing module 407 via Bluetooth. At the same time, the horizontal sensors in the two adjustment plates start to detect and determine whether the adjustment plates are at a horizontal angle. If they are not at a horizontal angle, the signal is sent to the processing module 407. The processing module 407 controls the lifting rod 404 to adjust the adjustment plate to deflect the adjustment plate and put the adjustment plate in a horizontal position. After it is horizontal, the signal is sent to the processing module 407 and the lifting rod stops. At this time, the processing module 407 judges the distance between the infrared transmitters 406 on both sides and the tank pipe wall through the visual capture signal of the side panel cameras 210 on both sides, and controls the rotation of the two-way screw rod 408. At this time, the two sliding blocks 402 move relative to each other to align the infrared transmitter 406 with the inner and outer tank side walls. At this time, the horizontal sensor in the adjustment plate performs a detection and judgment to prevent offset when sliding on the two-way screw rod 408. The infrared transmitter 406 irradiates along the inner and outer tank walls. When the infrared laser is reflected on the ground and returned to the infrared receiver in the processing module 407, the processing module 407 calculates the height distance between the inner and outer walls based on the time of reflection. Then, the deviation angle of the tank wall from the ground is calculated based on the height distance. If the calculated deviation angle exceeds the rated value, a signal is immediately sent to the background staff to go to the site for investigation.

[0057] 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.

[0058] 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 quality detector for weld seam and ground deviation angle of ultra-large LNG cryogenic storage tanks, wherein a tank seam detection trolley is provided on the tank wall (1), and the characteristics are: 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 main vehicle side panel (201) is provided on the horizontal walking module (2), and side panel cameras (210) are provided on both sides of the main vehicle side panel (201). A ground deviation angle detection module (4) is provided on the bottom side of the main vehicle side panel (201), and a base (401) is provided on the ground deviation angle detection module (4). A slot is provided in the middle of the base (401), and a bidirectional screw rod (408) is provided in the slot. The spiral patterns at both ends of the bidirectional screw rod (408) are opposite, and the bidirectional screw rod (408) is rotated in the slot by a motor. A sliding block (402) is provided, and an internal thread matching the two ends of the bidirectional screw rod (408) is provided in the sliding block (402). The sliding blocks (402) on both sides are moved closer to and away from each other by rotating the bidirectional screw rod (408). A fixed plate (403) and an adjustment plate are provided on the sliding block (402). The fixed plate (403) and the adjustment plate are connected by a lifting rod (404). A level sensor is provided in the adjustment plate. An infrared transmitter (406) and a processing module (407) are provided on the adjustment plate. An infrared receiver is also provided in the processing module (407). The infrared transmitter (406) emits an infrared laser and irradiates the ground. The infrared laser is reflected on the ground and then returned to the infrared receiver in the processing module (407). The processing module (407) calculates the height distance between the inside and outside according to the time of the reflection, and then calculates the deviation angle of the tank wall from the ground according to the height distance between the inside and outside.

2. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality 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 ground deviation angle quality detector according to claim 1 is characterized by: 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 vertical walking module (3). Two tracks (309) are provided on the imaging plate bracket (301). Hook plates (302) are provided on both sides of the imaging plate bracket (301). Hook openings are provided on the hook plates (302). The hook opening on the bracket is buckled and connected with the main vehicle side plate (201); a bracket (701) is provided on the vertical travel module (7) of the X-ray machine, and two tracks (309) are also provided on the bracket (701). A computer control panel (703) is provided on the side of the X-ray machine bracket (701), and 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, and the bracket hook plates (702) are buckled with the main vehicle side plate (201) through the hook openings on the bracket hook plates (702).

4. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 3 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).

5. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 4 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.

6. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 5 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).

7. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 6, 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.

8. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 3 is characterized by: 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).

9. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality 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).

10. The ultra-large LNG cryogenic storage tank weld and ground deviation angle quality detector according to claim 9, 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).

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