Offshore spilled oil recovery device and method

Abstract

The invention discloses an offshore spilled oil recovery device and method. The offshore spilled oil recovery device comprises a buoyancy cabin and an oil recovery module. The oil collecting module is located in front of the buoyancy compartment and comprises a disc type oil collecting device and a vacuum oil collecting device. A water inlet grating is arranged at the front end of the disc type oil collecting device, and a motor and a rotating disc group are arranged in the disc type oil collecting device; the rotating disc set and the motor are located in the disc type oil collecting device, cavities of the rotating disc set and the motor are sealed and isolated, the rotating disc set comprises a plurality of discs, the end faces of all the discs are oppositely arranged side by side and parallel to the seawater entering direction, the centers of all the discs are connected with a motor shaft, oil scraping plates are arranged between the adjacent discs, and the two sides of each oil scraping plate are tightly attached to the surfaces of the discs. The tail end of each oil scraping plate is connected with an oil guide pipe; the vacuum oil collecting device comprises an oil filtering chamber, the top of the oil filtering chamber is connected with a vacuum pump, the bottom of the oil filtering chamber is provided with a water outlet filter tip, the oil filtering chamber is communicated with an inner cavity of the disc type oil collecting device, and an oleophylic filter screen is arranged in the oil filtering chamber. And both thick oil layers and thin oil layers can be effectively recovered.

Description

Technical Field

[0001] The invention belongs to the field of offshore oil spill recovery and relates to an offshore oil spill recovery device and method. Background Art

[0002] Oil pollution is one of the main threats to the marine environment, especially during the offshore oil and gas extraction and transportation process, where oil spills occur frequently. According to statistics, in the past decade, there have been 62 oil spills of 7 tons or more worldwide, resulting in more than 164,000 tons of oil leaks, of which the largest leak in a single accident accounted for 70%.

[0003] According to the length of time since the accident, a thick oil layer with a thick middle and thin edges is formed in the early stage of the oil spill. Therefore, when the oil spill has not yet spread in large quantities and the oil layer is thick, emergency oil skimmers and oil booms can be used to block the thick oil layer and then collect the oil. As time goes by, the oil layer disperses and the thickness decreases. At this time, oil skimmers are often used to recover the spilled oil.

[0004] At present, the existing oil spill recovery equipment is mainly composed of weir-type oil skimmers, brush-type, disc-type, drum-type oil-philic oil skimmers and vacuum-type oil skimmers. When brush-type oil skimmers recover heavy oil with high viscosity, the roller brush does not rotate smoothly, the ability of the bristles to adhere to the heavy oil decreases, the oil-philic effect is not ideal, and the recovery efficiency is far below the given parameters. Drum-type oil skimmers have poor recovery effects on emulsified oil and oil films or oil residues that have almost lost their adhesion due to severe weathering or emulsification. Using weir-type oil skimmers that rely on gravity, vacuum-type oil skimmers that rely on vacuum, or mechanical lifting oil skimmers is more effective in recovering severely weathered heavy oil, but there is a problem of high water content, and the oil-water interface is difficult to grasp.

[0005] The weir-type oil skimmer uses the principle of gravity separation to guide the oil-water mixture into the oil collecting tank through the weir plate. The oil floats on the water surface due to its low density and is guided into the oil collecting tank through the weir plate, while the water is discharged from the bottom. It is suitable for recovering thick oil layers, but is less effective for thin oil layers; the brush-type oil skimmer uses a rotating brush to absorb floating oil on the water surface. After the spilled oil is brought to a high place by the brush, it is scraped off by a scraper and flows into the oil collecting tank. It is suitable for oil with high viscosity and waters with dispersed oil pollution; the disc-type oil skimmer uses a rotating disc immersed in the water surface. When the disc rotates, the oil adheres to the disc and rotates out with the disc, and then is scraped into the oil collecting tank by the scraper. It has a high recovery efficiency and is suitable for waters with high oil content and has strong adaptability to oil viscosity.

[0006] However, several oil recovery technologies currently on the market still have significant defects, such as heavy weight of emergency products, difficulty in transportation, cumbersome layout work, low recovery efficiency, and insufficient adaptability. Summary of the invention

[0007] The object of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide an offshore oil spill recovery device and method, which can effectively recover both thick oil layers and thin oil layers, and improve the oil collection performance and separation efficiency.

[0008] To achieve the above object, the present invention adopts the following technical solutions: An offshore oil spill recovery device includes a buoyancy tank and an oil collection module; The oil collection module is located in front of the buoyancy tank, and the oil collection module includes a disc type oil collection device and a vacuum oil collection device; The front end of the disc type oil collection device is provided with a water inlet grille, and a motor and a rotating disc group are arranged inside the disc type oil collection device; the rotating disc group and the motor are located inside the disc type oil collection device, and the chambers of the two are sealed and isolated. The rotating disc group adopts a plurality of discs, and the end faces of all the discs are arranged side by side relatively, the end faces of the discs are parallel to the direction of seawater entry, the centers of all the discs are connected to the motor shaft, a scraping plate is arranged between adjacent discs, both sides of the scraping plate are closely attached to the surface of the disc, and a guide oil pipe is connected to the end of each scraping plate; The vacuum oil collection device includes an oil filtering chamber, a vacuum pump is connected to the top of the oil filtering chamber, a water outlet filter nozzle is arranged at the bottom, the oil filtering chamber is communicated with the inner cavity of the disc type oil collection device, and an oil-loving filter screen is arranged inside the oil filtering chamber.

[0009] Preferably, a plurality of through holes are arranged around the center of the end face of the disc, a flange extending radially is arranged on the edge of the disc, and the head of the scraping plate fits the inner side of the flange.

[0010] Preferably, the number of the oil-loving filter screens is two, which are arranged up and down inside the oil filtering chamber. The material of the oil-loving filter screen located above is polypropylene fiber, and the surface of the oil-loving filter screen located below is covered with a graphene coating.

[0011] Preferably, an automatic sealing and packing module is arranged behind the buoyancy tank, which includes an automatic sealing device and a flexible oil storage bag. The flexible oil storage bag is communicated with the guide oil pipe by a main guide oil pipe, and the flexible oil storage bag is located inside the automatic sealing device.

[0012] Preferably, the automatic sealing device includes a support baffle and a conveyor belt; the support baffle is arranged on both sides of the conveyor belt, a cross beam is arranged on the support baffle, a cylinder is arranged in the middle of the cross beam, a pressing plate and a fixing plate are arranged between the cross beam and the conveyor belt, the output end of the cylinder is connected to the center of the top of the pressing plate, the side of the fixing plate is fixed on the support baffle, the end of the flexible oil storage bag is located on the fixing plate, and a heating sheet is arranged at the bottom of the pressing plate; A linear motor is arranged on the side of the pressing plate, the linear motor reciprocates perpendicular to the movement direction of the conveyor belt, and a cutter head is arranged at the output end of the linear motor; a pressure sensor is arranged inside the conveyor belt.

[0013] Preferably, an outlet communicating with the outside is arranged at the rear end of the buoyancy tank, and the end of the conveyor belt is communicated with the outlet.

[0014] Preferably, a driving motor and a water jet thruster are arranged at the bottom of the buoyancy chamber. The water jet thruster includes a thruster housing. An external water inlet is arranged below the thruster housing. The external water inlet is flush with the bottom surface of the buoyancy chamber. A propeller is arranged at the top of the inner cavity of the thruster housing. The output end of the driving motor is connected to the propeller. The top of the thruster housing is communicated with a water jet port through a diffuser. The water jet port faces the rear of the buoyancy chamber. An internal water inlet is arranged below the thruster housing. The internal water inlet is communicated to a water filter nozzle at the bottom of the oil filtering chamber.

[0015] An offshore oil spill recovery method includes the following processes: When the buoyancy chamber moves forward, seawater enters the disc oil collection device through the water inlet grille. The rotating disc group rotates driven by a motor. The discs adsorb highly viscous thick oil. The oil scraping plate scrapes the oil into the guide oil pipe for collection. The seawater still remaining with oil is transported to the oil filtering chamber by the suction of the vacuum pump and the inertial movement of seawater when the buoyancy chamber moves forward. Gravity makes the seawater with residual oil pass through the oil-loving filter screen. The residual oil is adsorbed on the oil-loving filter screen. The seawater after the oil layer is separated is discharged through the water outlet filter nozzle.

[0016] Preferably, the oil in the guide oil pipe is transported to the flexible oil storage bag through the main guide oil pipe. The end of the flexible oil storage bag is gradually filled and falls on the conveyor belt by gravity. When the pressure sensor detects that the bag is full, the cylinder drives the pressing plate to close. The heating sheet melts and seals the flexible oil storage bag into two parts. The sealed flexible oil storage bag is cut by the cutter head and transferred and stored by the conveyor belt.

[0017] Preferably, the seawater after oil-water separation discharged from the internal water inlet enters the water outlet filter nozzle. The seawater after oil-water separation and the driving motor jointly drive the propeller to rotate, forming a negative pressure in the thruster housing, so that the external water inlet sucks seawater and supplies it to the diffuser. The seawater is pressurized by the diffuser and sprayed out from the water jet port to drive the buoyancy chamber to move forward.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention combines disc oil collection and vacuum oil collection, breaks through the limitation of the traditional oil skimmer for selective operation on thick / thin oil layers, can effectively recover both thick oil layers and thin oil layers, and improves the oil collection performance and separation efficiency.

[0019] Furthermore, the separated oil pollution is continuously and automatically collected, sealed and packaged to achieve clean recovery of the oil pollution.

[0020] Furthermore, the packaged oil pollution is discharged from the buoyancy chamber, reducing the device volume, making it more portable and mobile, and not causing secondary pollution to the sea surface.

[0021] Furthermore, the dual water inlet design of the water jet thruster uses the separated clean water to drive the propeller, reducing energy consumption. Description of the Drawings

[0022] Figure 1 Schematic diagram of the internal structure of the offshore oil spill recovery device of the present invention; Figure 2 Schematic diagram of the overall structure of the oil collection module of the present invention; Figure 3 Front elevation sectional view of the oil collection module of the present invention; Figure 4 Top plan sectional view of the oil collection module of the present invention; Figure 5 Schematic diagram of the structure of the automatic sealing and packing module of the present invention; Figure 6 Schematic diagram of the structure of the water jet thruster of the present invention.

[0023] Wherein: 1 - intake grille, 2 - disc oil collection device, 3 - oil outlet, 4 - vacuum suction cup, 5 - vacuum oil collection device, 6 - water outlet, 7 - automatic sealing and packing device, 8 - flexible oil storage bag, 9 - outlet, 10 - water jet thruster, 11 - internal water inlet, 12 - external water suction port, 13 - water jet port, 14 - buoyancy chamber, 15 - infrared detector, 16 - oil pipeline, 17 - water pipeline, 201 - rotating disc group, 202 - oil scraping plate, 203 - oil guide pipe, 204 - main oil guide pipe, 205 - motor shaft, 501 - vacuum pump, 502 - oil filter chamber, 503 - first oil - loving filter screen, 504 - second oil - loving filter screen, 505 - water outlet filter nozzle, 506 - motor, 701 - support baffle, 702 - linear motor, 703 - cutter head, 704 - connecting shaft, 705 - cylinder, 706 - slider, 707 - pressing plate, 708 - heating sheet, 709 - conveyor belt, 710 - pressure sensor, 711 - rotating motor, 1001 - diffuser, 1002 - water inlet filter nozzle, 1003 - propeller, 1004 - thruster housing. Detailed implementation manners

[0024] The following describes in detail the implementation manners of the present invention. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection or a communication connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0028] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0029] As Figure 1 shown, the present invention relates to an offshore oil spill recovery device, which includes a buoyancy tank 14, an oil collection module, an automatic sealing and packing module, and a water jet thruster 10.

[0030] The oil collection module is in front of the buoyancy tank 14. As Figures 2 to 4 shown, it consists of two major parts: a disk-type oil collection device 2 and a vacuum oil collection device 5. The disk-type oil collection device 2 is provided with a water inlet grille 1, a rotating disk group 201, an oil scraping plate 202, a guide oil pipe 203, and a main guide oil pipe 204. The thick oil is adsorbed by the rotation of the disks and scraped into the guide oil pipe by the oil scraping plate; the vacuum oil collection device 5 includes a vacuum suction cup 4, a motor 506, a vacuum pump 501, an oil filtering chamber 502, an outlet filter nozzle 505, a first oil-loving filter screen 503, and a second oil-loving filter screen 504. The negative pressure is used to accelerate the separation of oil and water, and the two oil-loving filter screens filter tiny oil droplets to collect thin oil layers.

[0031] The water inlet grille 1 is set as a square fine grid, located at the front end of the disk-type oil collection device 2, and is flush with the sea surface. When the buoyancy tank 14 advances to collect oil, seawater enters the disk-type oil collection device 2 through the water inlet grille 1, while blocking most of the marine solids from entering the interior of the disk-type oil collection device 2. The rotating disk group 201 and the motor 506 are located inside the disk-type oil collection device 2, and their chambers are sealed and isolated. The rotating disk group 201 uses multiple disks, and all the disk end faces are arranged side by side relative to each other. The disk end faces are parallel to the direction of seawater entry. The disk diameter is 200 mm, the motor 506 rotates at a speed of 120 - 150 rpm, and the immersion depth is 80% of the radius. The centers of all the disks are connected to the motor shaft 205, and the motor 506 can drive the disk group to rotate when it works. An oil scraping plate 202 is arranged between adjacent disks. The head of the oil scraping plate 202 is shovel-shaped, and both sides are made of soft silicone rubber. The two sides of the oil scraping plate 202 closely adhere to the disk surface and scrape the thick oil on the disks into the guide oil pipe 203. The guide oil pipe 203 is connected to the main guide oil pipe 204 through a spiral diversion groove, and an anti-backflow valve is provided at the end of the main guide oil pipe to prevent the oil from flowing back.

[0032] The rotating disk group 201 is located in the middle of the disk - type oil collection device 2. The disks are designed with flanged openings to enhance the adsorption force for high - viscosity heavy oil. Multiple through - holes are arranged around the center of the disk end face, and radial flanges are arranged at the disk edge. Each end of the scraping oil plate 202 is connected to a guide oil pipe 203. The two sides of the scraping oil plate 202 are closely attached to the disk surface, and the head fits the inner side of the flange, scraping the heavy oil in the rotating disk group into the guide oil pipe 203. All the guide oil pipes 203 are connected to the main guide oil pipe 204 through spiral diversion grooves. An anti - backflow valve is provided at the end of the main guide oil pipe 204 to ensure the unidirectional delivery of the oil fluid to the automatic sealing and packing module 7.

[0033] The oil - filtering chamber 502 of the vacuum oil collection device 5 is communicated with the inner cavity of the disk - type oil collection device 2 through the annular vacuum sucker 4. A vacuum pump 501 is connected to the top of the oil - filtering chamber 502, and a water outlet filter nozzle 505 is arranged at the bottom. Two oil - loving filter meshes, upper and lower, are arranged inside the oil - filtering chamber 502. The first oil - loving filter mesh 503 is located above the second oil - loving filter mesh 504, forming a negative pressure in the cavity of the oil - filtering chamber 502 to accelerate the thin oil layer to gather through the first oil - loving filter mesh 503 and the second oil - loving filter mesh 504. The filtered seawater is discharged through the water outlet filter nozzle 505. The first oil - loving filter mesh 503 is made of polypropylene fiber, and the second oil - loving filter mesh 504 is made of a metal mesh covered with a graphene coating, ensuring a micron - level filtering accuracy and improving the separation efficiency of the thin oil layer.

[0034] The vacuum pump 501 is at the top of the oil - filtering chamber 502, forming a negative pressure in the oil - filtering chamber 502, so that the seawater after disk - type oil collection accelerates into the vacuum oil collection device 5 from the cavity of the disk - type oil collection device 2 through the vacuum sucker 4. Under the action of gravity, the thin oil layer in the seawater passes through the double - layer oil - loving filter mesh and is then discharged after being filtered by the water outlet filter nozzle 505, achieving the maximum degree of recovery.

[0035] The automatic sealing and packing module is located in the upper - right of the buoyancy tank 14, as Figure 5 shown. The automatic sealing and packing module includes an automatic sealing device 7 and a flexible oil storage bag 8. The automatic sealing device 7 includes a support baffle 701, a cylinder 705, a fixing plate, a pressing plate 707, a heating sheet 708, a linear motor 702, a cutter head 703, a conveyor belt 709, a pressure sensor 710, and a rotating motor 711.

[0036] The support baffles 701 are arranged on both sides of the conveyor belt 709. Cross beams are provided on the support baffles 701. A cylinder 705 is arranged in the middle of the cross beams. Sliders 706 are vertically and slidably connected to both sides of the cylinder 705 on the cross beams. The pressing plate 707 and the fixing plate are located between the cross beams and the conveyor belt 709. The side of the fixing plate is fixed to the support baffle 701, so that the fixing plate is suspended above the conveyor belt 709. The end of the flexible oil storage bag 8 is located on the fixing plate. The output end of the cylinder 705 is connected to the center of the top of the pressing plate 707. The two sliders 706 are connected to the tops of the two ends of the pressing plate 707. The cylinder 705 is a double-shaft cylinder.

[0037] The heating sheet 708 covers and is connected to the bottom of the pressing plate 707. When the temperature of the heating sheet 708 rises to 150 - 200 °C, the opening of the flexible oil storage bag 8 is melted and sealed.

[0038] The linear motor 702 is located on the side of the pressing plate 707 and can reciprocate in a direction perpendicular to the moving direction of the conveyor belt 709. The cutter head 703 is fixed to the output end of the linear motor 702 and can cut and separate the sealed flexible oil storage bag 8.

[0039] The conveyor belt 709 is supported by two connecting shafts 704. The rotating motor 711 is belt-connected to one of the connecting shafts 704. The conveyor belt 709 is driven by the rotating motor 711 through belt transmission, driving the connecting shaft 704 and the conveyor belt 709 to rotate together. A pressure sensor 710 is laid below the conveyor belt 709, which can detect the weight of the oil in the flexible oil storage bag 8 on the conveyor belt 709 while transmitting.

[0040] The flexible oil storage bag 8 is made of PVC-coated fabric and has excellent chemical corrosion resistance, oil resistance, and weather resistance. The flexible oil storage bag 8 is a rectangular bag with one end open. The opening is circular and is connected to the cylindrical oil delivery pipe 16. When the oil collection has not started, the flexible oil storage bag 8 is placed on the shelf above the front end of the conveyor belt 709, and the end is located on the fixing plate.

[0041] The main oil delivery pipe 204 is communicated with the flexible oil storage bag 8 through the oil delivery pipe 16. After the oil liquid enters the flexible oil storage bag 8 through the oil delivery pipe 16, the flexible oil storage bag 8 gradually elongates, and the end part sags to the conveyor belt 709 due to gravity and moves backward along with the conveyor belt. At this time, the pressure sensor 710 monitors the weight on the conveyor belt 709 in real time. When the full bag threshold is reached, the sealing program is triggered. The cylinder 705 drives the pressing plate 707 to close the bag opening, and at the same time, the heating sheet 708 heats up to 150 - 200 °C to melt the bag opening material to form an airtight seal. After sealing, the cutter head 703 driven by the linear motor 702 cuts and separates to form a storage unit with a specified capacity. The sealed storage unit is automatically conveyed to the outlet 9 through the conveyor belt 709. The outlet 9 is located at the rear end of the buoyancy tank 14, and the outlet 9 is communicated to the outside of the buoyancy tank 14.

[0042] The automatic sealing and packing module is inclined, making it easier for oil stains to deposit at the bottom of the flexible oil storage bag 8. The bottom of the flexible oil storage bag 8 falls onto the conveyor belt 709 by gravity.

[0043] One water jet thruster 10 is distributed on each side at the bottom of the buoyancy chamber 14, responsible for the movement of the buoyancy chamber 14. As Figure 6 shown, the water jet thruster 10 includes a water jet outlet 13, a diffuser 1001, an external water suction port 12, an internal water inlet 11, a water inlet filter 1002, a propeller 1003, and a thruster housing 1004.

[0044] The external water suction port 12 and the internal water inlet 11 are respectively arranged on both sides below the thruster housing 1004. The external water suction port 12 is flush with the bottom surface of the buoyancy chamber 14. The internal water inlet 11 is connected to the water filter 505 at the bottom of the oil filtering chamber 502 through a water delivery pipe 17. A water inlet filter 1002 is arranged inside the internal water inlet 11. A propeller 1003 is arranged at the top of the inner cavity of the thruster housing 1004. A driving motor is arranged at the bottom of the buoyancy chamber 14, and the output end of the driving motor is connected to the propeller 1003. The top of the thruster housing 1004 is connected to the water jet outlet 13 through a diffuser 1001, and the water jet outlet 13 faces the rear of the buoyancy chamber 14.

[0045] The outer shell of the thruster housing 1004 is made of fiberglass, and the internal flow channel is coated with polytetrafluoroethylene (PTFE) for anti-corrosion and anti-fouling.

[0046] The water jet thruster 10 adopts a double-inlet design. The driving motor drives the propeller 1003 to rotate, creating a negative pressure inside the thruster housing 1004. Seawater is sucked through the external water suction port 12, supplied to the diffuser 1001, and the seawater after oil-water separation is recycled through the internal water inlet 11. The water inlet filter 1002 further filters the seawater after oil-water separation. The seawater after oil-water separation and the driving motor jointly drive the propeller 1003. The two-stage drive reduces energy consumption and increases the propulsion power. The seawater is pressurized by the diffuser 1001 and then sprayed out from the water jet outlet 13 to drive the buoyancy chamber 14 forward.

[0047] The water jet thruster 10 is equipped with a thermal infrared probe 15. The thermal infrared probe 15 is located at the top of the front end of the buoyancy chamber 14, which can detect the oil film distribution in real time, be used for visual guidance during night travel, or optimize the oil collection path of the autopilot, and coordinate the actions of each module through the control system to achieve efficient and adaptive operation, realize water jet drive, reduce the energy consumption of the driver, and increase the propulsion power.

[0048] The oil spill recovery process of the above-mentioned offshore oil spill recovery device is as follows: After starting the water jet thruster 10, the thermal infrared probe 15 scans the oil film distribution in real time and plans the optimal path. The water jet thruster 10 drives the buoyancy chamber 14 to move through a dual-inlet design. Seawater is inhaled through the external water intake 12, and the separated clear water is reused through the internal water inlet 11 to reduce energy consumption.

[0049] After reaching the target area, the disc oil skimming device 2 adsorbs high-viscosity heavy oil through the rotating disc group 201, and the oil scraping plate 202 scrapes the oil into the guide oil pipe 203; the oil is transported to the automatic sealing and packing module through the main guide oil pipe 204 and the oil pipeline 16. The seawater with residual oil in the disc oil skimming device 2 is transported to the oil filtering chamber 502 by the suction of the vacuum pump 501 and the inertia of seawater movement when the buoyancy chamber 14 moves forward. Gravity causes the thin oil layer to adsorb on the first oil-wetting filter screen 503 and the second oil-wetting filter screen 504, and the seawater after the oil layer is separated enters the water jet thruster 10 through the water delivery pipeline 17.

[0050] After receiving the oil, the automatic sealing and packing module 7 gradually fills the end of the flexible oil storage bag 8, and it falls on the conveyor belt 709 by gravity. When the pressure sensor 710 detects that the bag is full, it triggers the sealing action: the cylinder 705 drives the pressing plate 707 to close, and the heating sheet 708 melts and seals the flexible oil storage bag 8 into two parts. The sealed flexible oil storage bag 8 is cut by the cutter head 703 and is automatically discharged by the conveyor belt 709. The oil skimming operation continues until the next bag change and filter replacement to ensure continuous recovery.

[0051] The seawater after oil-water separation discharged from the water outlet filter nozzle 505 is introduced into the internal water inlet 11. The seawater after oil-water separation and the drive motor jointly drive the propeller 1003 to rotate, forming a negative pressure in the thruster housing 1004, so that the external water intake 12 sucks seawater and supplies it to the diffuser 1001. The seawater is pressurized by the diffuser 1001 and sprayed out from the water jet port 13 to drive the buoyancy chamber 14 forward.

[0052] The serial numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0053] In the above embodiments of the present application, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] In several embodiments provided by this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling, or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0055] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0056] The above is only the preferred embodiment of this application. It should be noted that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this application.

[0057] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and many applications beyond the provided examples will be obvious to those skilled in the art. Therefore, the scope of this patent should not be determined by the above description, but should be determined by the full scope of the foregoing claims and the equivalents of these claims. For the sake of comprehensiveness, all articles and references including patent applications and published announcements are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to abandon such subject matter, nor should the applicant be considered not to have considered such subject matter as part of the disclosed inventive subject matter.

Claims

1. An offshore oil spill recovery device, characterized in that: It includes a buoyancy tank (14) and an oil recovery module; The oil collection module is located in front of the buoyancy chamber (14), and comprises a disc-type oil collection device (2) and a vacuum oil collection device (5); A water inlet grille (1) is arranged at the front end of the disc-type oil collecting device (2), and a motor (506) and a rotating disc group (201) are arranged inside the disc-type oil collecting device (2); the rotating disc group (201) and the motor (506) are located inside the disc-type oil collecting device (2), and the chambers of the two are sealed and isolated; the rotating disc group (201) uses a plurality of discs, and the end faces of all the discs are arranged side by side relative to each other, and the end faces of the discs are parallel to the direction of seawater inlet; the centers of all the discs are connected to the motor shaft (205); oil scraping plates (202) are arranged between adjacent discs, and the two sides of the oil scraping plates (202) are closely attached to the surface of the discs, and the end of each oil scraping plate (202) is connected to an oil guide pipe (203); The vacuum oil collecting device (5) comprises an oil filter chamber (502), the top of the oil filter chamber (502) is connected to a vacuum pump (501), the bottom is provided with a water outlet filter nozzle (505), the oil filter chamber (502) is in communication with the inner cavity of the disc-type oil collecting device (2), and an oleophilic filter screen is provided inside the oil filter chamber (502).

2. The offshore oil spill recovery device according to claim 1, characterized in that: A plurality of through holes are arranged around the center of the disc end surface, a radially extending flange is arranged at the disc edge, and the head of the oil scraper plate (202) fits in contact with the inner side of the flange.

3. The offshore oil spill recovery device according to claim 1, characterized in that: There are two oleophilic filter screens, which are arranged in the oil filter chamber (502) from top to bottom. The upper oleophilic filter screen is made of polypropylene fiber, and the lower oleophilic filter screen is covered with a graphene coating.

4. The offshore oil spill recovery device according to claim 1, characterized in that: An automatic sealing and packaging module is arranged behind the buoyancy chamber (14), comprising an automatic sealing device (7) and a flexible oil storage bag (8); the flexible oil storage bag (8) is connected to the oil guide pipe (203) via a main oil guide pipe (204); and the flexible oil storage bag (8) is located inside the automatic sealing device (7).

5. The offshore oil spill recovery device according to claim 4, characterized in that: The automatic sealing device (7) comprises a supporting baffle (701) and a conveyor belt (709); the supporting baffle (701) is arranged on both sides of the conveyor belt (709); a crossbeam is arranged on the supporting baffle (701); a cylinder (705) is arranged in the middle of the crossbeam; a pressing plate (707) and a fixing plate are arranged between the crossbeam and the conveyor belt (709); an output end of the cylinder (705) is connected to the top center of the pressing plate (707); a side surface of the fixing plate is fixed to the supporting baffle (701); a terminal end of the flexible oil storage bag (8) is located on the fixing plate; and a heating plate (708) is arranged at the bottom of the pressing plate (707); A linear motor (702) is arranged on the side of the pressing plate (707), the linear motor (702) reciprocates perpendicularly to the movement direction of the conveyor belt (709), and a cutter head (703) is arranged at the output end of the linear motor (702); a pressure sensor (710) is arranged inside the conveyor belt (709).

6. The offshore oil spill recovery device according to claim 5, characterized in that: An outlet (9) connected to the outside is provided at the rear end of the buoyancy chamber (14), and the end of the conveyor belt (709) is connected to the outlet (9).

7. The offshore oil spill recovery device according to claim 1, characterized in that: A driving motor and a water jet propulsion device (10) are arranged at the bottom of the buoyancy chamber (14). The water jet propulsion device (10) comprises a propeller housing (1004). An external water suction port (12) is arranged below the propeller housing (1004). The external water suction port (12) is flush with the bottom surface of the buoyancy chamber (14). A propeller (1003) is arranged at the top of the inner cavity of the propeller housing (1004). The output end of the driving motor is connected to the propeller (1003). A water jet port (13) is connected to the top of the propeller housing (1004) through a diffuser (1001). The water jet port (13) faces the rear of the buoyancy chamber (14). An internal water inlet (11) is arranged below the propeller housing (1004). The internal water inlet (11) is connected to a water inlet filter (505) at the bottom of the oil filter chamber (502).

8. A method for recovering oil spills at sea based on the device according to any one of claims 1 to 7, characterized in that: The process includes: When the buoyancy chamber (14) moves forward, seawater enters the disc-type oil collecting device (2) through the water inlet grid (1), the rotating disc group (201) is driven by the motor (506) to rotate, the disc absorbs high-viscosity heavy oil, and the oil scraper (202) scrapes the oil into the oil guide pipe (203) for collection; the seawater still with residual oil is transported to the oil filter chamber (502) through the suction of the vacuum pump (501) and the inertia of the seawater when the buoyancy chamber (14) moves forward, and gravity causes the seawater with residual oil to pass through the oleophilic filter screen, the residual oil is absorbed on the oleophilic filter screen, and the seawater after the oil layer is separated is discharged through the water outlet filter (505).

9. The offshore oil spill recovery method according to claim 8, characterized in that: The oil in the oil guide pipe (203) is transported to the flexible oil storage bag (8) via the main oil guide pipe (204). The end of the flexible oil storage bag (8) is gradually filled and falls onto the conveyor belt (709) by gravity. When the pressure sensor (710) detects that the bag is full, the cylinder (705) drives the pressing plate (707) to close, and the heating plate (708) melts and seals the flexible oil storage bag (8) into two parts. The sealed flexible oil storage bag (8) is cut by the cutter head (703) and transferred and stored by the conveyor belt (709).

10. The offshore oil spill recovery method according to claim 8, characterized in that: The internal water inlet (11) is fed with seawater discharged from the water outlet filter (505) after oil and water separation. The seawater after oil and water separation and the driving motor together drive the propeller (1003) to rotate, thereby forming a negative pressure in the propeller housing (1004), so that the external water intake port (12) absorbs seawater and supplies it to the diffuser (1001). The seawater is pressurized by the diffuser (1001) and then ejected from the water ejection port (13) to drive the buoyancy cabin (14) forward.

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