Steel plate pretreatment device for FPSO ship body construction and treatment method thereof

Abstract

The invention relates to the technical field of FPSO (floating production storage and offloading) steel plate processing, in particular to a steel plate pretreatment device for FPSO hull construction, which comprises a bottom plate, a console arranged on one side of the bottom plate, a first conveying belt arranged on the upper side of the bottom plate, a steel plate visual detection part arranged on one side of the first conveying belt, and a second conveying belt arranged on the upper side of the bottom plate and located on the right side of the first conveying belt. A second conveying belt is arranged on the upper side of the bottom plate, a steel plate severe corrosion treatment part is arranged on one side of the second conveying belt, a third conveying belt is arranged on the upper side of the bottom plate, a steel plate mild corrosion treatment part is arranged on one side of the third conveying belt, two side plates are arranged on the upper side of the bottom plate, and the second conveying belt and the third conveying belt are of a parallel symmetrical structure. The problem that the machining efficiency is reduced due to the fact that the steel plate for FPSO ship body building cannot be selectively treated according to the surface corrosion condition of the steel plate is solved.

Description

Technical Field

[0001] The invention relates to the technical field of FPSO steel plate processing, and in particular to a steel plate pretreatment device and a processing method thereof for FPSO hull construction. Background Art

[0002] FPSO steel plate refers to the steel plate used for floating production storage and offloading (FPSO). FPSO is an offshore oil facility used for preliminary processing and storage of crude oil, known as an "offshore oil plant". FPSO steel plates need to meet specific technical requirements, including low temperature resistance, high strength, and the ability to maintain low-temperature impact toughness and strength under high-line energy welding conditions.

[0003] FPSO steel plates need to be pretreated before use. Pretreatment is to clean the rust on their surface. When the existing surface pretreatment device is used, it fails to perform selective treatment according to the rust condition of the steel plate surface, that is, the same equipment may not be able to adapt to the rust removal operation. There may be a situation where slight rust damage is treated severely or severe rust damage is treated lightly. For this reason, we propose a steel plate pretreatment device and a treatment method for FPSO hull construction. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and propose a steel plate pretreatment device for FPSO hull construction. The steel plate pretreatment device for FPSO hull construction solves the problem that the steel plates for FPSO hull construction cannot be selectively treated according to the surface corrosion conditions of the steel plates, thereby reducing the processing efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A steel plate pretreatment device for FPSO hull construction comprises a bottom plate, a control console is arranged on one side of the bottom plate, a conveyor belt 1 is arranged on the upper side of the bottom plate, a steel plate visual inspection part is arranged on one side of the conveyor belt 1, a conveyor belt 2 is arranged on the upper side of the bottom plate and to the right of the conveyor belt 1, a steel plate heavy rust treatment part is arranged on one side of the conveyor belt 2, a conveyor belt 3 is arranged on the upper side of the bottom plate, a steel plate light rust treatment part is arranged on one side of the conveyor belt 3, two side plates are arranged on the upper side of the bottom plate, and the conveyor belt 2 and the conveyor belt 3 are arranged in a parallel and symmetrical structure.

[0006] Through the above technical scheme, the steel plates for FPSO hull construction that need to be pretreated are placed on conveyor belt one, and the steel plates are scanned and identified by the steel plate visual detection unit on conveyor belt one. The steel plate visual detection unit controls the position of conveyor belt one according to the scanning results, and the steel plate heavy rust treatment unit or the steel plate light rust treatment unit is selected according to the condition of the steel plate to perform pretreatment operations on the steel plate, thereby meeting the needs of targeted treatment of different conditions of steel plate corrosion, thereby improving the pretreatment efficiency.

[0007] Preferably, the steel plate visual detection part includes a visual movement detection component and a conveyor belt displacement component, the visual movement detection component includes a support frame, the support frame is arranged on one side of the conveyor belt, a guide frame is arranged on one side of the support frame, a motor is arranged on one side of the guide frame, a threaded rod is arranged at the shaft end of the motor, a mounting frame is threadedly sleeved on the outer side of the threaded rod, a guide frame is arranged on the other side of the support frame, a guide rod is arranged inside the guide frame, the guide rod is slidably sleeved with the mounting frame, a CCD visual scanner is arranged on the lower side of the mounting frame, and a display screen is arranged on the upper side of the mounting frame.

[0008] Through the above technical solution, motor 1 controls threaded rod 1 to rotate in guide frame 1, threaded rod 1 threadedly drives mounting bracket, and the other side of mounting bracket moves on guide rod in guide frame 2, so that CCD visual scanner on the lower side of mounting bracket performs mobile scanning, and then the scanning result is fed back to the display screen for display, thereby providing a mobile visual scanning and recognition function for steel plate.

[0009] Preferably, the conveyor belt displacement assembly includes a second motor, and the second motor is arranged on one side of the side plate. A second threaded rod is arranged at the shaft end of the second motor, and the second threaded rod is threadedly sleeved with the support frame. Two positioning plates are arranged on the upper side of the base plate, and a guide bar is arranged between the two positioning plates. The support frame is slidably connected to one side of the guide bar.

[0010] Through the above technical solution, according to the scanning result of the CCD visual scanner, the conveyor belt moves or does not move. When moving, the motor drives the threaded rod to rotate, and the threaded rod transmits the support frame. The support frame moves on the guide bar and is limited by the positioning plate, thereby satisfying the movement of the conveyor belt to the specified position, providing a displacement function for the conveyor belt.

[0011] Preferably, the steel plate severe rust treatment part includes a protective shell 1, which is arranged on the upper side of the conveyor belt 2, and a plurality of rust removal liquid concentration boxes are arranged on the inner top of the protective shell 1, and a plurality of electrically controlled nozzles are arranged on the lower side of the rust removal liquid concentration box, and a liquid conduit is arranged on one side of the rust removal liquid concentration box, and a pressure pump is arranged at the end of the liquid conduit, and a rust removal liquid placement box is arranged on the lower side of the conveyor belt 2, and the pressure pump is placed in the rust removal liquid placement box, and diversion holes are arranged on both sides of the conveyor belt 2, and a plurality of heating units are arranged on the upper side of the protective shell 1.

[0012] Through the above technical scheme, the heavily rusted steel plate is sent to the conveyor belt two through the conveyor belt one, and the steel plate enters the protective shell one. The pressure pump extracts the rust removing liquid in the rust removing liquid placement box and sends it to the liquid conduit. The rust removing liquid flows to the rust removing liquid concentration box and then is sprayed with high pressure by the electronically controlled nozzle to spray and remove rust on the heavily rusted steel plate. The rust removing liquid after spraying flows back to the rust removing liquid placement box through the guide hole. Finally, the steel plate after spraying and removing rust is dried by the warm air of the warm air unit, thereby providing a spraying and drying function.

[0013] Preferably, plug-in grooves are provided on both sides of the second conveyor belt, plug-in strips are plugged into the plug-in grooves, a rust residue filter box is provided on one side of the plug-in strip, and the rust residue filter box is placed above the rust removal liquid placement box.

[0014] Through the above technical scheme, the rust residue filter box is inserted into the plug-in groove with the plug-in strip and installed on both sides of the conveyor belt 2 and is located below the guide hole. The rust removal liquid containing rust residue flows out of the guide hole and flows into the rust residue filter box, where it is filtered and discharged, thereby providing a filtering and recycling function for secondary utilization.

[0015] Preferably, the steel plate mild rust treatment part includes a protective shell 2, which is arranged on the upper side of the conveyor belt 3, and a plurality of cylinders are arranged on the upper side of the protective shell 2, and a connecting shell is arranged at the end of the cylinder, and a grinding roller is rotatably connected in the connecting shell, and a plurality of slide grooves are arranged on one side of the protective shell 2, and a slider is slidably connected in the slide groove, and soft rubber extension plates are arranged on both sides of the slider, and a motor 3 is arranged on one side of the slider, and the shaft end of the motor 3 is connected to one end of the grinding roller.

[0016] Through the above technical solution, the slightly rusted steel plate is sent to the conveyor belt three through the conveyor belt one, and the steel plate enters the protective shell two. The motor three drives the grinding roller to rotate, and the cylinder pushes the connecting shell to move the rotating grinding roller downward to grind the surface of the steel plate. At the same time, the slider moves in the slide groove to pull the soft rubber extension plate, providing an anti-splash grinding function.

[0017] Preferably, a plurality of wind collecting hoods are provided on one side of the protective shell 2, an air guide duct is provided on one side of the wind collecting hood, a filter box is provided on the upper side of the bottom plate and below the conveyor belt 3, a fan is provided inside the filter box, the input end of the fan is connected to one end of the air guide duct, an exhaust duct is provided at the output end of the fan, a filter box is plugged into one end of the exhaust duct, a plurality of air holes are provided on one side of the filter box and below the filter box, and a connecting plate is provided on one side of the filter box.

[0018] Through the above technical solution, the powder splashes generated by grinding, the fan works, and is extracted by using the air guide pipe and the air collecting hood, and is sent to the filter box through the exhaust pipe for gas filtration, and finally discharged from the air holes on the filter box, thereby providing a powder splash adsorption function.

[0019] Preferably, both sides of the second protective shell are rotatably connected with baffles via a rotating shaft.

[0020] Through the above technical solution, the setting of the baffle provides a shielding function for the two sides of the protective shell to prevent powder from splashing out during internal grinding.

[0021] Preferably, a plurality of guardrails are provided on the upper side of the base plate.

[0022] Through the above technical solution, the setting of the guardrail is used to provide a protection function for the device.

[0023] A processing method for a steel plate pretreatment device for FPSO hull construction, the specific steps are as follows: S1. placing the steel plates for FPSO hull construction that need to be pretreated on conveyor belt 1; S2, using the steel plate visual detection unit on the conveyor belt 1 to scan and identify the steel plate; S3, the steel plate visual inspection unit controls the conveyor belt position according to the scanning result; S4. Select the heavily rusted steel plate treatment part or the lightly rusted steel plate treatment part to perform pretreatment operation on the steel plate according to the condition of the steel plate.

[0024] In summary, the present invention places the steel plates for FPSO hull construction that need to be pretreated on conveyor belt one, and uses the steel plate visual detection unit on conveyor belt one to scan and identify the steel plates. The steel plate visual detection unit controls the position of conveyor belt one according to the scanning results, and selects the steel plate heavy rust treatment unit or the steel plate light rust treatment unit to perform pretreatment operations on the steel plates according to the conditions of the steel plates, thereby meeting the needs of targeted treatment of different conditions of steel plate corrosion, thereby improving the pretreatment efficiency.

[0025] The present invention determines whether conveyor belt 1 moves or does not move according to the scanning result of the CCD visual scanner. When it moves, motor 2 drives threaded rod 2 to rotate, and threaded rod 2 threadably transmits a support frame. The support frame moves on the guide bar and is limited by the positioning plate, thereby satisfying the movement of conveyor belt 1 to the specified position, providing a displacement function for conveyor belt 1.

[0026] According to the present invention, a steel plate with severe rust is sent to a second conveyor belt via a first conveyor belt, and the steel plate enters a first protective shell, a pressure pump extracts rust removal liquid from a rust removal liquid placement box and sends it to a liquid conduit, and the rust removal liquid flows to a rust removal liquid concentration box, and then an electrically controlled nozzle performs high-pressure spraying to spray and remove rust from the severely rusted steel plate, and the rust removal liquid after spraying flows back to the rust removal liquid placement box through a guide hole, and finally the steel plate after spraying and removing rust is dried by warm air from a warm air unit, thereby providing a function of spraying and removing rust and drying.

[0027] In the present invention, a slightly rusted steel plate is sent to a third conveyor belt via a first conveyor belt, and the steel plate enters a second protective shell. A third motor drives a grinding roller to rotate, and a cylinder pushes a connecting shell to move the rotating grinding roller downward to grind the surface of the steel plate. At the same time, a slider moves in a slide groove to pull a soft rubber extension plate, thereby providing an anti-splash grinding function. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the exploded structure of the front axial side of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the back axial side of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the steel plate visual inspection part of the present invention; Figure 4 It is a schematic diagram of the explosive structure of the severe corrosion treatment part of the steel plate of the present invention; Figure 5 It is a schematic diagram of the explosion structure of the lightly rusted portion of the steel plate of the present invention; Figure 6 It is a structural schematic diagram of the front axial side of the present invention; Figure 7 It is a schematic structural diagram of the back axial side of the present invention.

[0029] In the figure: 1, bottom plate; 2, control console; 3, conveyor belt 1; 4, steel plate visual inspection unit; 41, support frame; 42, guide frame 1; 43, motor 1; 44, threaded rod 1; 45, mounting frame; 46, guide frame 2; 47, guide rod; 48, CCD visual scanner; 49, display screen; 410, motor 2; 411, threaded rod 2; 412, positioning plate; 413, guide bar; 5, conveyor belt 2; 6, steel plate heavy rust treatment unit; 61, protective shell 1; 62, rust removal liquid concentration box; 63, liquid conduit; 64, pressure pump; 65, rust removal liquid Placement box; 66, guide hole; 67, plug-in slot; 68, plug-in strip; 69, rust residue filter box; 610, heater unit; 7, conveyor belt three; 8, steel plate light rust treatment part; 81, protective shell two; 82, cylinder; 83, connecting shell; 84, grinding roller; 85, slide groove; 86, slider; 87, soft rubber extension plate; 88, motor three; 89, wind hood; 810, air guide duct; 811, filter box; 812, fan; 813, exhaust duct; 814, filter box; 815, connecting plate; 816, baffle; 9, side panel; 10, guardrail. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-Figure 2 , Figure 6-Figure 7 A steel plate pretreatment device for FPSO hull construction comprises a bottom plate 1, a control console 2 is arranged on one side of the bottom plate 1, a conveyor belt 1 3 is arranged on the upper side of the bottom plate 1, a steel plate visual inspection part 4 is arranged on one side of the conveyor belt 1 3, a conveyor belt 2 5 is arranged on the upper side of the bottom plate 1 and on the right side of the conveyor belt 1 3, a steel plate heavy rust treatment part 6 is arranged on one side of the conveyor belt 2 5, a conveyor belt 3 7 is arranged on the upper side of the bottom plate 1, a steel plate light rust treatment part 8 is arranged on one side of the conveyor belt 3 7, two side plates 9 are arranged on the upper side of the bottom plate 1, the conveyor belt 2 5 and the conveyor belt 3 7 are arranged in a parallel symmetrical structure, and a plurality of guardrails 10 are arranged on the upper side of the bottom plate 1.

[0032] In this embodiment, the steel plates for FPSO hull construction that need to be pretreated are placed on a conveyor belt 3, and the steel plates are scanned and identified by a steel plate visual inspection unit 4 on the conveyor belt 3. The steel plate visual inspection unit 4 controls the position of the conveyor belt 3 according to the scanning results, and the steel plate heavy rust treatment unit 6 or the steel plate light rust treatment unit 8 is selected according to the condition of the steel plate to perform pretreatment operations on the steel plate.

[0033] Reference Figure 3The steel plate visual inspection unit 4 includes a visual movement inspection component and a conveyor belt displacement component. The visual movement inspection component includes a support frame 41, which is arranged on one side of the conveyor belt 3. A guide frame 42 is arranged on one side of the support frame 41. A motor 43 is arranged on one side of the guide frame 42. A threaded rod 44 is arranged on the shaft end of the motor 43. The outer side of the threaded rod 44 is threadedly sleeved with a mounting frame 45. A guide frame 46 is arranged on the other side of the support frame 41. A guide rod 47 is arranged in the guide frame 46. The guide rod 47 and the mounting frame 45 are connected to each other. The frame 45 is slidably sleeved, a CCD visual scanner 48 is provided on the lower side of the mounting frame 45, a display screen 49 is provided on the upper side of the mounting frame 45, a conveyor belt displacement assembly includes a motor 2 410, the motor 2 410 is provided on one side of the side plate 9, a threaded rod 2 411 is provided at the shaft end of the motor 2 410, the threaded rod 2 411 is threadedly sleeved with the support frame 41, two positioning plates 412 are provided on the upper side of the bottom plate 1, a guide bar 413 is provided between the two positioning plates 412, and the support frame 41 is slidably connected to one side of the guide bar 413.

[0034] In this embodiment, motor 1 43 controls threaded rod 1 44 to rotate in guide frame 1 42, threaded rod 1 44 threadedly drives mounting frame 45, and the other side of mounting frame 45 moves on guide rod 47 in guide frame 2 46, so that CCD vision scanner 48 on the lower side of mounting frame 45 moves and scans, and then the scanning result is fed back to display screen 49 for display, and according to the scanning result of CCD vision scanner 48, conveyor belt 3 moves or does not move, when moving, motor 2 410 drives threaded rod 2 411 to rotate, threaded rod 2 411 threadedly drives support frame 41, and support frame 41 moves on guide bar 413 and is limited by positioning plate 412, thereby satisfying that conveyor belt 3 moves to the specified position.

[0035] Reference Figure 4 The steel plate severe rust treatment part 6 includes a protective shell 61, which is arranged on the upper side of the conveyor belt 5, and a plurality of rust removal liquid concentration boxes 62 are arranged on the inner top of the protective shell 61, and a plurality of electric control nozzles are arranged on the lower side of the rust removal liquid concentration box 62. A liquid conduit 63 is arranged on one side of the rust removal liquid concentration box 62, and a pressure pump 64 is arranged on the end of the liquid conduit 63. A rust removal liquid placement box 65 is arranged on the lower side of the conveyor belt 5, and the pressure pump 64 is placed in the rust removal liquid placement box 65. Both sides of the conveyor belt 5 are provided with guide holes 66, and a plurality of warm air units 610 are arranged on the upper side of the protective shell 61. Both sides of the conveyor belt 5 are provided with plug-in grooves 67, and plug-in strips 68 are plugged into the plug-in grooves 67. A rust residue filter box 69 is arranged on one side of the plug-in strip 68, and the rust residue filter box 69 is placed above the rust removal liquid placement box 65. In this embodiment, the steel plate is severely rusted and is sent to the conveyor belt 2 5 via the conveyor belt 1 3. The steel plate enters the protective shell 1 61. The pressure pump 64 extracts the rust removing liquid in the rust removing liquid placement box 65 and sends it to the liquid conduit 63. The rust removing liquid flows to the rust removing liquid concentration box 62 and then is sprayed with high pressure by the electrically controlled nozzle to spray and remove rust on the severely rusted steel plate. The rust residue filter box 69 is inserted into the plug-in slot 67 with the plug-in strip 68 and is installed on both sides of the conveyor belt 2 5 and is located below the guide hole 66. The rust removing liquid with rust residue flows out of the guide hole 66 and flows into the rust residue filter box 69, which is filtered and discharged and flows back into the rust removing liquid placement box 65. Finally, the steel plate after spraying and removing rust is dried by the warm air of the warm air unit 610.

[0036] Reference Figure 5 The steel plate light rust treatment part 8 includes a protective shell 2 81, which is arranged on the upper side of the conveyor belt 3 7. A plurality of cylinders 82 are arranged on the upper side of the protective shell 2 81, and a connecting shell 83 is arranged at the end of the cylinder 82. A grinding roller 84 is rotatably connected in the connecting shell 83. A plurality of slide grooves 85 are arranged on one side of the protective shell 2 81, and a slider 86 is slidably connected in the slide groove 85. Soft rubber extension plates 87 are arranged on both sides of the slider 86. A motor 3 88 is arranged on one side of the slider 86, and the shaft end of the motor 3 88 is connected to one end of the grinding roller 84. A plurality of air collecting covers 89 are arranged on one side of the protective shell 2 81. An air duct 810 is provided on one side of the wind collecting hood 89, a filter box 811 is provided on the upper side of the bottom plate 1 and below the conveyor belt three 7, a fan 812 is provided inside the filter box 811, the input end of the fan 812 is connected to one end of the air duct 810, the output end of the fan 812 is provided with an exhaust duct 813, one end of the exhaust duct 813 is plugged with a filter box 814, a plurality of air holes are provided on one side of the filter box 811 and below the filter box 814, a connecting plate 815 is provided on one side of the filter box 814, and baffles 816 are rotatably connected to both sides of the protective shell two 81 through a rotating shaft.

[0037] In this embodiment, the steel plate is slightly corroded and is sent to the conveyor belt three 7 via the conveyor belt one 3. The steel plate enters the protective shell two 81, and the motor three 88 drives the grinding roller 84 to rotate. The cylinder 82 pushes the connecting shell 83, so that the rotating grinding roller 84 moves down to grind the surface of the steel plate. At the same time, the slider 86 moves in the slide groove 85 to pull the soft rubber extension plate 87, and the powder generated by grinding splashes. The fan 812 works, and the air guide duct 810 is used to cooperate with the air collecting hood 89 for extraction, and the air is sent to the filter box 814 through the exhaust duct 813 for gas filtration, and finally discharged from the air holes on the filter box 811, thereby providing a powder splash adsorption function.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel plate pretreatment device for FPSO hull construction, comprising a bottom plate (1), a control console (2) being arranged on one side of the bottom plate (1), characterized in that: A conveyor belt 1 (3) is arranged on the upper side of the bottom plate (1), a steel plate visual inspection portion (4) is arranged on one side of the conveyor belt 1 (3), a conveyor belt 2 (5) is arranged on the upper side of the bottom plate (1) and to the right of the conveyor belt 1 (3), a steel plate heavy rust treatment portion (6) is arranged on one side of the conveyor belt 2 (5), a conveyor belt 3 (7) is arranged on the upper side of the bottom plate (1), a steel plate light rust treatment portion (8) is arranged on one side of the conveyor belt 3 (7), two side plates (9) are arranged on the upper side of the bottom plate (1), and the conveyor belt 2 (5) and the conveyor belt 3 (7) are arranged in a parallel and symmetrical structure.

2. A steel plate pretreatment device for FPSO hull construction according to claim 1, characterized in that: The steel plate visual inspection unit (4) comprises a visual movement inspection component and a conveyor belt displacement component, wherein the visual movement inspection component comprises a support frame (41), wherein the support frame (41) is arranged on one side of the conveyor belt (3), wherein a guide frame (42) is arranged on one side of the support frame (41), wherein a motor (43) is arranged on one side of the guide frame (42), wherein a threaded rod (44) is arranged at the shaft end of the motor (43), wherein the outer side of the threaded rod (44) is threadedly sleeved with a mounting frame (45), wherein a guide frame (46) is arranged on the other side of the support frame (41), wherein a guide rod (47) is arranged inside the guide frame (46), wherein the guide rod (47) is slidably sleeved with the mounting frame (45), wherein a CCD visual scanner (48) is arranged on the lower side of the mounting frame (45), and wherein a display screen (49) is arranged on the upper side of the mounting frame (45).

3. The steel plate pretreatment device for FPSO hull construction according to claim 2, characterized in that: The conveyor belt displacement assembly comprises a second motor (410), wherein the second motor (410) is arranged on one side of the side plate (9), a second threaded rod (411) is arranged at the shaft end of the second motor (410), and the second threaded rod (411) is threadedly sleeved with the support frame (41), two positioning plates (412) are arranged on the upper side of the bottom plate (1), a guide bar (413) is arranged between the two positioning plates (412), and the support frame (41) is slidably connected to one side of the guide bar (413).

4. The steel plate pretreatment device for FPSO hull construction according to claim 1, characterized in that: The steel plate severe rust treatment part (6) comprises a protective shell (61), wherein the protective shell (61) is arranged on the upper side of the conveyor belt (5), a plurality of rust removal liquid concentration boxes (62) are arranged on the inner top of the protective shell (61), a plurality of electrically controlled nozzles are arranged on the lower side of the rust removal liquid concentration box (62), a liquid conduit (63) is arranged on one side of the rust removal liquid concentration box (62), a pressure pump (64) is arranged at the end of the liquid conduit (63), a rust removal liquid placement box (65) is arranged on the lower side of the conveyor belt (5), the pressure pump (64) is placed in the rust removal liquid placement box (65), both sides of the conveyor belt (5) are provided with guide holes (66), and a plurality of heating air units (610) are arranged on the upper side of the protective shell (61).

5. The steel plate pretreatment device for FPSO hull construction according to claim 4, characterized in that: The two sides of the conveyor belt 2 (5) are provided with plug-in grooves (67), a plug-in strip (68) is plugged into the plug-in grooves (67), a rust residue filter box (69) is provided on one side of the plug-in strip (68), and the rust residue filter box (69) is placed above the rust removal liquid placement box (65).

6. The steel plate pretreatment device for FPSO hull construction according to claim 1, characterized in that: The steel plate light rust treatment part (8) comprises a second protective shell (81), wherein the second protective shell (81) is arranged on the upper side of the conveyor belt (7), a plurality of cylinders (82) are arranged on the upper side of the second protective shell (81), a connecting shell (83) is arranged at the end of the cylinder (82), a grinding roller (84) is rotatably connected in the connecting shell (83), a plurality of slide grooves (85) are arranged on one side of the second protective shell (81), a slider (86) is slidably connected in the slide groove (85), soft rubber extension plates (87) are arranged on both sides of the slider (86), a third motor (88) is arranged on one side of the slider (86), and the shaft end of the third motor (88) is connected to one end of the grinding roller (84).

7. The steel plate pretreatment device for FPSO hull construction according to claim 6, characterized in that: A plurality of air collecting covers (89) are arranged on one side of the protective shell (81), an air guide pipe (810) is arranged on one side of the air collecting covers (89), a filter box (811) is arranged on the upper side of the bottom plate (1) and below the conveyor belt (7), a fan (812) is arranged inside the filter box (811), an input end of the fan (812) is connected to one end of the air guide pipe (810), an exhaust pipe (813) is arranged on the output end of the fan (812), one end of the exhaust pipe (813) is plugged with a filter box (814), a plurality of air holes are arranged on one side of the filter box (811) and below the filter box (814), and a connecting plate (815) is arranged on one side of the filter box (814).

8. The steel plate pretreatment device for FPSO hull construction according to claim 6, characterized in that: Both sides of the second protective shell (81) are rotatably connected to baffles (816) via a rotating shaft.

9. The steel plate pretreatment device for FPSO hull construction according to claim 1, characterized in that: A plurality of guardrails (10) are arranged on the upper side of the bottom plate (1).

10. A processing method for a steel plate pretreatment device for FPSO hull construction according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1. Place the steel plates for FPSO hull construction that need to be pre-treated on conveyor belt 1 (3); S2, using the steel plate visual detection unit (4) on the conveyor belt 1 (3) to scan and identify the steel plate; S3, the steel plate visual inspection unit (4) controls the position of the conveyor belt 1 (3) according to the scanning result; S4. Select the steel plate heavy rust treatment section (6) or the steel plate light rust treatment section (8) according to the condition of the steel plate to perform pretreatment operations on the steel plate.

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