Inert gas storage device and method for ultra-large oil tanker

Abstract

The invention discloses an ultra-large tanker inert gas storage device and method. The ultra-large tanker inert gas storage device comprises a supply tank; the supply tank is communicated with the generator through a pipeline supply system, the pipeline supply system comprises a first pipeline and a supply component, the second pipeline is fixedly arranged in the first pipeline, a first cavity channel is formed in the inner wall of the second pipeline, and a second cavity channel is formed by the outer wall of the second pipeline and the inner wall of the first pipeline; the storage unit comprises a storage tank, a filter plate and a flow equalizing component, and the flow equalizing component is arranged in the storage tank to drain inert gas. According to the pipeline supply system with the double-cavity design, it is guaranteed that fuel supply of the generator cannot be interrupted due to the fault of a single pipeline, and the reliability of fuel supply is remarkably improved; and moreover, the inert gas entering the storage tank is always kept at relatively high purity, so that the quality of the inert gas is powerfully ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of inert gas storage, and particularly to an inert gas storage device and method for a very large crude oil carrier (VLCC). Background Art

[0002] When a very large crude oil carrier (VLCC) transports flammable liquid cargoes such as crude oil, there is a flammable and explosive oil and gas mixture in the cargo oil tank. To reduce the risk of fire and explosion, it is usually necessary to fill the cargo oil tank with inert gas to reduce the oxygen concentration in the tank to a safe level. Currently, the inert gas mainly comes from an inert gas generator, which generates a gas containing inert components such as carbon dioxide and nitrogen by burning fuel, and is transported to the cargo oil tank after cooling, washing, impurity removal and other treatments.

[0003] However, there are many problems in the existing system. Traditional inert gas generators mostly use light oil (MGO) or medium oil (MDO) as fuel. On the one hand, if there is a fault in the supply pipeline of the fuel supply system itself, the entire inert gas generation system will stop working, resulting in the cargo oil tank not being able to be protected by inert gas in time, posing a great safety hazard. On the other hand, the existing inert gas storage methods are relatively single, mostly simple storage tank storage, lacking effective safety protection measures for gas quality. During long-term storage, the use effect of inert gas may be affected due to problems such as gas impurity mixing, and even safety accidents may be caused. Summary of the Invention

[0004] The purpose of the present invention is to provide an inert gas storage device and method for a very large crude oil carrier (VLCC) to solve the problems in the above background art that there are many problems in the existing system. Traditional inert gas generators mostly use light oil (MGO) or medium oil (MDO) as fuel. On the one hand, if there is a fault in the supply pipeline of the fuel supply system itself, the entire inert gas generation system will stop working, resulting in the cargo oil tank not being able to be protected by inert gas in time, posing a great safety hazard. On the other hand, the existing inert gas storage methods are relatively single, mostly simple storage tank storage, lacking effective safety protection measures for gas quality. During long-term storage, the use effect of inert gas may be affected due to problems such as gas impurity mixing, and even safety accidents may be caused.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: An inert gas storage device for a very large crude oil carrier (VLCC) includes A supply tank for storing fuel; A generator, with a pipeline supply system connecting the supply tank and the generator. The pipeline supply system includes a first pipeline, a second pipeline, a third pipeline, and a supply component. The first pipeline and the third pipeline are integrally formed. The second pipeline is fixedly arranged inside the first pipeline. The inner wall of the second pipeline forms a first channel, and the outer wall of the second pipeline and the inner wall of the first pipeline form a second channel. One end of the first pipeline and the second pipeline is connected to the supply tank, and the other end is connected to the supply component. The upper end of the third pipeline is connected to the generator; And a storage unit, which includes a storage tank, a filter plate, and a flow equalizing component. The filter plate is arranged in the storage tank through a moving component, and the flow equalizing component is arranged in the storage tank to divert the inert gas.

[0006] In a preferred embodiment: The generator and the storage tank are connected through a seventh pipeline. The end of the seventh pipeline far from the generator is placed at the top position of the storage tank. A cleaning component for preventing blockage of the filter screen is also provided in the storage tank. The cleaning component includes a first motor, a driving shaft, a first bevel gear, a second bevel gear, a connecting column, and a cleaning brush. A first motor is installed on the outer wall of the storage tank. The output shaft of the first motor is fixedly connected to the driving shaft. One end of the driving shaft rotates inside the storage tank, and a first sealing ring is provided on its outer wall. One end of the driving shaft rotating inside the storage tank is fixedly connected to a first bevel gear. The first bevel gear is meshed with a second bevel gear. A connecting column is fixedly connected to the inner wall of the second bevel gear. A cleaning brush is provided below the connecting column for cleaning the impurities at the upper end of the filter screen.

[0007] In a preferred embodiment: The flow equalizing component includes a guide plate, a flow equalizing plate, a fixing column, and a second motor. The guide plate is placed between the connecting column and the cleaning brush. The upper end of the guide plate is fixedly connected to the connecting column, and the lower end is fixedly connected to the cleaning brush. The lower end of the fixing column is rotatably connected to the bottom wall of the storage tank, and a second sealing ring is provided on the outer wall of the fixing column. The output shaft of the second motor installed at the bottom of the storage tank is fixedly connected to the bottom end of the fixing column. The flow equalizing plate is fixed to the outer wall of the fixing column, and the outer wall of the end of the flow equalizing plate far from the fixing column contacts the inner wall of the storage tank and is slidably connected to the inner wall of the storage tank. The shape of the flow equalizing plate is spiral.

[0008] In a preferred embodiment: The moving component includes a limiting plate, a driving plate, a ball screw, and a driving component. An opening is provided on the storage tank. A limiting plate is slidably arranged in the opening. A sealing rubber block is provided on the outer wall of the limiting plate. The inner wall of the limiting plate is fixedly connected to the outer wall of the filter plate, and the inner wall of the limiting plate is semi-circular, matching the shape of the filter plate. Two symmetrically distributed driving plates are fixedly connected to the upper end of the limiting plate. The two driving plates are respectively threadedly connected to a ball screw, and the two ball screws are controlled to rotate through the driving component.

[0009] In a preferred embodiment: The two driving plates are L-shaped. Two symmetrically distributed support plates are fixedly connected to the outer wall of the storage tank. The two ball screws are rotatably connected to the support plates, and the driving plates are slidably connected to the upper ends of the support plates.

[0010] When the filter plate needs to be replaced or deeply maintained, the third motor is started. The third motor drives the sprocket on its outer wall to rotate. Through chain drive, the two ball screws are driven to rotate synchronously. Since the two driving plates are respectively threadedly connected to the two ball screws and the driving plates are L-shaped and slidably connected to the upper ends of the support plates, when the ball screws rotate, the driving plates drive the limiting plates to slide upward along the opening on the storage tank, so as to move the filter plate out of the storage tank, facilitating maintenance operations. After the maintenance is completed, the third motor is operated in reverse to reinstall the filter plate into the storage tank.

[0011] In a preferred embodiment: The driving assembly includes a third motor, a sprocket and a chain. The third motor is fixedly installed on the outer wall of the upper end of the storage tank. Sprockets are fixedly connected to the outer walls of the third motor and the two ball screws, and the multiple sprockets are connected by chain drive.

[0012] In a preferred embodiment: The supply member includes a fourth pipe, a fifth pipe and a sixth pipe. The fourth pipe is connected to the first pipe through flange one. The fourth pipe is communicated with the second pipe. The fifth pipe is connected to the fourth pipe through flange two. The sixth pipe is fixedly arranged in the fifth pipe. The inside of the sixth pipe is a fourth cavity. A third cavity is formed between the outer wall of the sixth pipe and the inner wall of the fifth pipe. The fourth pipe is communicated with the sixth pipe.

[0013] In a preferred embodiment: A pressure detector is installed on the fourth pipe. The pressure detector is electrically connected to an alarm through a controller. The alarm and the controller are installed at one end of the pressure detector. The pressure detector on the fourth pipe monitors the pressure condition in the pipe in real time. Under normal circumstances, the pressure is within a set reasonable range. When the pressure rises or drops abnormally, the pressure detector transmits a signal to the controller, and the controller triggers the alarm to sound. After the staff hears the alarm, they can promptly check and process the fuel delivery pipeline and related equipment to ensure the safe and stable operation of the system.

[0014] In a preferred embodiment: An output pipe is provided at the bottom end of the storage tank. One ends of the fifth pipe and the sixth pipe are placed inside the generator.

[0015] A method for using an inert gas storage device for ultra-large oil tankers is as follows: S1. Store the fuel in the supply tank. The supply tank transports the fuel to the generator through the pipeline supply system. In the pipeline supply system, the fuel is transported through the first channel into the fourth pipeline, and then transported to the generator through the sixth pipeline. When the first pipeline and the sixth pipeline are damaged, the fuel begins to enter the second channel through the first channel and enters the third channel through the fourth channel. If a failure occurs in the conveying pipeline corresponding to one of the channels, the generator can continue to be supplied with fuel through the other channel to ensure the continuous operation of the generator. The fuel enters the generator through the supply component; S2. The generator uses the supplied fuel for reactions such as combustion to generate a gas containing inert components such as carbon dioxide and nitrogen; S3. The generated inert gas is transported from the generator to the storage tank through the seventh pipeline. When entering the storage tank, the gas first passes through the filter plate for filtration to remove impurities therein. At the same time, the cleaning component can be started regularly or as needed. The cleaning brush is driven by the first motor to clean the filter plate to prevent impurities from blocking the filter plate. The filtered inert gas is in the storage tank and is evenly distributed and stored through the flow equalizing component. The second motor drives the fixed column and the spiral flow equalizing plate to rotate, evenly dispersing the gas in the storage tank to improve the storage efficiency and stability; S4. The output pipe at the bottom of the storage tank can transport the stored inert gas to the use places such as the cargo oil tank as needed.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: With the setup of the pipeline supply system in the present invention, when the system starts, the fuel first initiates the transportation process through the first channel, flowing from the supply tank through the first channel of the first pipeline into the fourth pipeline, then into the sixth pipeline, and finally reaching the generator. Suppose at a certain moment, the transportation pipeline corresponding to the first channel is damaged due to wear, corrosion, etc. The system can quickly and automatically switch the fuel transportation path to the second channel. At this time, the fuel enters the second channel between the first pipeline and the second pipeline from the supply tank, then flows into the fourth pipeline, then enters the third cavity of the fifth pipeline, and finally enters the generator. This pipeline supply system with a dual-channel design ensures that the fuel supply to the generator will not be interrupted due to a single pipeline failure. Compared with traditional single-pipe transportation, it greatly reduces the possibility of dangerous accidents caused by direct fuel leakage into the air, significantly improves the reliability of fuel supply, and lays a solid foundation for the stable operation of the inert gas generator. Also, with the setup of the pressure detector installed on the fourth pipeline, it continuously monitors the pressure inside the pipeline in real time. Under normal operating conditions, the pressure inside the pipeline fluctuates within a set reasonable range. Once the pressure abnormally increases or decreases due to pipeline leakage, blockage, or equipment failure, etc., the pressure detector can capture the pressure change signal within an extremely short time and quickly transmit this signal to the controller. After receiving the signal, the controller immediately triggers the alarm to sound. After hearing the alarm sound, the staff can quickly locate the position of the abnormal pressure and promptly conduct a comprehensive inspection and targeted treatment on the fuel transportation pipeline and related equipment, eliminating potential safety hazards at the budding stage, and further ensuring the safe and stable operation of the entire system.

[0017] With the setting of the storage unit, when the inert gas enters the storage tank from the generator through the seventh pipeline, the filter plate undertakes the key task of filtering impurities. During long-term use, various impurities in the gas will inevitably adhere to the surface of the filter plate, affecting the filtering effect. At this time, start the first motor, and the motor drives the drive shaft to rotate. The first bevel gear on the drive shaft rotates accordingly, and the second bevel gear meshing with the first bevel gear drives the connecting column and the cleaning brush below to rotate. The cleaning brush rotates along the surface of the filter plate, which can efficiently remove the impurities attached to the upper end of the filter plate, ensuring that the filter plate always maintains good filtering performance. By starting the cleaning component regularly or according to the actual situation, the blockage of the filter plate by impurities is effectively prevented, so that the inert gas entering the storage tank always maintains a high purity, which strongly guarantees the quality of the inert gas and provides a reliable guarantee for the subsequent safe use in places such as cargo oil tanks. Inside the storage tank, when the second motor is started, its output shaft drives the fixed column to rotate, and the spiral flow equalizing plate on the fixed column rotates synchronously. Since one end of the flow equalizing plate is in contact with the inner wall of the storage tank and is slidably connected, during rotation, the flow equalizing plate can apply a uniform force to the inert gas entering the storage tank, dispersing the gas evenly. At the same time, the flow guiding plate between the connecting column and the cleaning brush also plays an important role. It guides the flow direction of the gas, making the distribution of the gas in the storage tank more uniform and reasonable. This uniform gas distribution state avoids the situation of local aggregation or uneven distribution of the gas in the storage tank, effectively improves the storage efficiency, reduces the energy loss during storage, and at the same time enhances the storage stability and reduces the safety risks that may be caused by uneven gas distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the storage device of the present invention; Figure 2 is a schematic cross-sectional structure diagram of the pipeline supply system of the present invention; Figure 3 is a schematic side view structure diagram of the storage tank of the present invention; Figure 4 is a schematic side cross-sectional structure diagram of the storage tank of the present invention; Figure 5 is a schematic diagram of a partial structure of the storage tank unit of the present invention; Figure 6 is a schematic diagram of the opening structure of the present invention; In the figure: 1. Supply tank; 2. Generator; 3. First pipeline; 4. Second pipeline; 5. Third pipeline; 6. First cavity; 7. Second cavity; 8. Storage tank; 9. Filter plate; 10. Seventh pipeline; 11. First motor; 12. Drive shaft; 13. First bevel gear; 14. Second bevel gear; 15. Connecting column; 16. Cleaning brush; 17. Deflector; 18. Flow equalizing plate; 19. Fixed column; 20. Second motor; 21. Limiting plate; 22. Driving plate; 23. Ball screw; 24. Opening; 25. Support plate; 26. Third motor; 27. Chain; 28. Fourth pipeline; 29. Fifth pipeline; 30. Sixth pipeline; 31. Fourth cavity; 32. Third cavity; 33. Pressure detector; 34. Alarm; 35. Output pipe. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 - 6 , the present invention provides a technical solution: a super-large oil tanker inert gas storage device, including, A supply tank 1 for storing fuel; A generator 2, which is connected to the supply tank 1 through a pipeline supply system. The pipeline supply system includes a first pipeline 3, a second pipeline 4, a third pipeline 5 and a supply component. The first pipeline 3 and the third pipeline 5 are integrally formed. The second pipeline 4 is fixedly arranged inside the first pipeline 3. The inner wall of the second pipeline 4 forms a first cavity 6, and the outer wall of the second pipeline 4 and the inner wall of the first pipeline 3 form a second cavity 7. One end of the first pipeline 3 and the second pipeline 4 is connected to the supply tank 1, and the other end is connected to the supply component. The upper end of the third pipeline 5 is connected to the generator 2; And a storage unit, the storage unit includes a storage tank 8, a filter plate 9 and a flow equalizing component. The filter plate 9 is arranged in the storage tank 8 through a moving component, and the flow equalizing component is arranged in the storage tank 8 to divert the inert gas.

[0021] First, store fuels such as light oil MGO or middle oil MDO in the supply tank 1. When the system starts, the fuel is transported through the first channel 6 and the fourth channel. The fuel enters the generator 2 through the supply component. If a failure such as a breakage occurs in the conveying pipeline corresponding to the first channel 6, the fuel conveyance can be switched to the second channel 7 and the third channel. The fuel in the second channel 7 enters the generator 2 to supply fuel to the generator 2, which not only ensures the continuous operation of the generator 2 but also, compared with the single-pipe setting, can prevent the fuel from directly leaking into the air and causing dangerous accidents.

[0022] After that, the generator 2 uses the supplied fuel for a combustion reaction to generate a gas containing inert components such as carbon dioxide and nitrogen. The generated inert gas is transported from the generator 2 to the storage tank 8 through the seventh pipeline 10. When entering the storage tank 8, the gas first passes through the filter plate 9 for filtration. After the filter plate 9 has been used for a period of time, start the first motor 11. The first motor 11 drives the drive shaft 12 to rotate. The first bevel gear 13 on the drive shaft 12 drives the second bevel gear 14 to rotate, and then the connecting column 15 and the cleaning brush 16 below it rotate to clean the impurities on the upper end of the filter plate 9, preventing the impurities from blocking the filter plate 9 and ensuring the filtering effect of the filter plate 9. After the filtered inert gas is in the storage tank 8, start the second motor 20. The second motor 20 drives the fixed column 19 to rotate, and the flow equalizing plate 18 on the fixed column 19 rotates accordingly. Since the flow equalizing plate 18 is spiral and one end of it is in contact with the inner wall of the storage tank 8 and is slidably connected, it can evenly disperse the inert gas entering the storage tank 8 during rotation. At the same time, the deflector 17 also guides the gas, making the gas distribution in the storage tank 8 more uniform and improving the storage efficiency and stability.

[0023] Finally, when the inert gas is needed in the cargo oil tank or the like, open the output pipe 35 at the bottom of the storage tank 8 to transport the stored inert gas to the corresponding position. During the whole process, the pressure detector 33 on the fourth pipeline 28 continuously monitors the pressure in the pipeline. When the pressure shows an abnormal increase or decrease, the pressure detector 33 transmits a signal to the controller, and the controller triggers the alarm 34 to give an alarm, reminding the staff to check and handle it in time.

[0024] The generator 2 and the storage tank 8 are connected through a seventh pipeline 10. The end of the seventh pipeline 10 far from the generator 2 is placed at the top position of the storage tank 8. A cleaning component for preventing blockage of the filter screen is also provided in the storage tank 8. The cleaning component includes a first motor 11, a drive shaft 12, a first bevel gear 13, a second bevel gear 14, a connecting column 15, and a cleaning brush 16. The first motor 11 is installed on the outer wall of the storage tank 8. The output shaft of the first motor 11 is fixedly connected to the drive shaft 12. One end of the drive shaft 12 rotates in the storage tank 8, and a first sealing ring is provided on its outer wall. One end of the drive shaft 12 rotating in the storage tank 8 is fixedly connected to the first bevel gear 13. The first bevel gear 13 is meshed with the second bevel gear 14. The connecting column 15 is fixedly connected to the inner wall of the second bevel gear 14. A cleaning brush 16 is provided below the connecting column 15 for cleaning impurities at the upper end of the filter screen to prevent the impurities from blocking the filter screen and reducing the treatment of inert gas.

[0025] The flow equalizing member includes a guide plate 17, a flow equalizing plate 18, a fixing column 19, and a second motor 20. The guide plate 17 is placed between the connecting column 15 and the cleaning brush 16. The upper end of the guide plate 17 is fixedly connected to the connecting column 15, and the lower end is fixedly connected to the cleaning brush 16. The lower end of the fixing column 19 is rotatably connected to the bottom wall of the storage tank 8, and a second sealing ring is provided on the outer wall of the fixing column 19. The output shaft of the second motor 20 installed at the bottom of the storage tank 8 is fixedly connected to the bottom end of the fixing column 19. The flow equalizing plate 18 is fixed to the outer wall of the fixing column 19, and the outer wall of the end of the flow equalizing plate 18 far from the fixing column 19 contacts the inner wall of the storage tank 8 and is slidably connected to the inner wall of the storage tank 8. The shape of the flow equalizing plate 18 is spiral.

[0026] The moving component includes a limiting plate 21, a driving plate 22, a ball screw 23, and a driving component. An opening 24 is formed in the storage tank 8. The limiting plate 21 is slidably arranged in the opening 24. A sealing rubber block is provided on the outer wall of the limiting plate 21. The inner wall of the limiting plate 21 is fixedly connected to the outer wall of the filter plate 9, and the inner wall of the limiting plate 21 is semi-circular and matches the shape of the filter plate 9. Two symmetrically distributed driving plates 22 are fixedly connected to the upper end of the limiting plate 21. The two driving plates 22 are respectively threadedly connected to the ball screw 23. The two ball screws 23 are controlled to rotate by the driving component. When the filter plate 9 is moved out of the storage tank 8, since the bristles at the lower end of the cleaning brush 16 are lower than the upper end of the filter plate 9, the wall of the filter plate 9 can scrape the bristles, scraping the impurities attached to the bristles onto the filter plate 9 and also cleaning the bristles.

[0027] The two driving plates 22 are L-shaped, and two symmetrically distributed support plates 25 are fixedly connected to the outer wall of the storage tank 8. The two ball screws 23 are rotatably connected to the support plates 25, and the driving plates 22 are slidably connected to the upper ends of the support plates 25.

[0028] The driving assembly includes a third motor 26, a sprocket and a chain 27. The third motor 26 is fixedly mounted on the outer wall of the upper end of the storage tank 8. The third motor 26 and the outer walls of the two ball screws 23 are fixedly connected with sprockets. The multiple sprockets are connected by the chain 27.

[0029] The supply component includes a fourth pipeline 28, a fifth pipeline 29 and a sixth pipeline 30. The fourth pipeline 28 is connected to the first pipeline 3 through a flange 1, the fourth pipeline 28 is communicated with the second pipeline 4, the fifth pipeline 29 is connected to the fourth pipeline 28 through a flange 2, the sixth pipeline 30 is fixed in the fifth pipeline 29, the sixth pipeline 30 has a fourth cavity 31 in it, the outer wall of the sixth pipeline 30 and the inner wall of the fifth pipeline 29 form a third cavity 32, and the fourth pipeline 28 is communicated with the sixth pipeline 30.

[0030] A pressure detector 33 is installed on the fourth pipeline 28 . The pressure detector 33 is electrically connected to an alarm 34 through a controller. The alarm 34 and the controller are installed at one end of the pressure detector 33 .

[0031] An output pipe 35 is provided at the bottom end of the storage tank 8 , and one end of the fifth pipeline 29 and the sixth pipeline 30 are placed in the generator 2 .

[0032] A method for using an inert gas storage device for a very large oil tanker, the specific contents are as follows: S1, the fuel is stored in the supply tank 1, and the supply tank 1 delivers the fuel to the generator 2 through the pipeline supply system. In the pipeline supply system, the fuel is delivered to the fourth pipeline 28 through the first cavity 6, and then delivered to the generator 2 through the sixth pipeline 30. When the first pipeline 3 and the sixth pipeline 30 are damaged, the fuel begins to enter the second cavity 7 through the first cavity 6, and enters the third cavity from the fourth cavity. If the delivery pipeline corresponding to one of the cavities fails, the fuel can continue to be supplied to the generator 2 through the other cavity to ensure that the generator 2 continues to work, and the fuel enters the generator 2 through the supply component; S2, generator 2 uses the supplied fuel to perform combustion and other reactions to generate a gas containing inert components such as carbon dioxide and nitrogen; S3. The generated inert gas is transported from the generator 2 to the storage tank 8 through the seventh pipeline 10. When entering the storage tank 8, the gas first passes through the filter plate 9 for filtration to remove impurities therein. At the same time, the cleaning component can be started regularly or as needed. The first motor 11 drives the cleaning brush 16 to clean the filter plate 9 to prevent impurities from clogging the filter plate 9. The filtered inert gas in the storage tank 8 is evenly distributed and stored through the flow equalizing member. The second motor 20 drives the fixed column 19 and the spiral flow equalizing plate 18 to rotate, evenly dispersing the gas in the storage tank 8, improving the storage efficiency and stability; S4. The output pipe 35 at the bottom of the storage tank 8 can transport the stored inert gas to places of use such as the cargo oil tank as needed.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inert gas storage device for a very large crude carrier, characterized in that: including, a supply tank (1) for storing fuel; a generator (2), the supply tank (1) and the generator (2) are connected through a pipeline supply system, the pipeline supply system includes a first pipeline (3), a second pipeline (4), a third pipeline (5) and a supply member, the first pipeline (3) and the third pipeline (5) are integrally formed, the second pipeline (4) is fixedly arranged inside the first pipeline (3), a first cavity (6) is formed on the inner wall of the second pipeline (4), and a second cavity (7) is formed between the outer wall of the second pipeline (4) and the inner wall of the first pipeline (3), one end of the first pipeline (3) and the second pipeline (4) is connected to the supply tank (1), and the other end is connected to the supply member, the upper end of the third pipeline (5) is connected to the generator (2); and a storage unit, the storage unit includes a storage tank (8), a filter plate (9) and a flow equalizing member, the filter plate (9) is arranged in the storage tank (8) through a moving component, and the flow equalizing component is arranged in the storage tank (8) to divert the inert gas.

2. The inert gas storage device and method for a very large crude carrier according to claim 1, characterized in that: The generator (2) and the storage tank (8) are connected through a seventh pipeline (10), one end of the seventh pipeline (10) away from the generator (2) is placed at the top position of the storage tank (8), and a cleaning component for preventing blockage of the filter screen is also arranged in the storage tank (8), the cleaning component includes a first motor (11), a driving shaft (12), a first bevel gear (13), a second bevel gear (14), a connecting column (15) and a cleaning brush (16), the first motor (11) is installed on the outer wall of the storage tank (8), the output shaft of the first motor (11) is fixedly connected with the driving shaft (12), one end of the driving shaft (12) rotates in the storage tank (8), and a first sealing ring is arranged on its outer wall, one end of the driving shaft (12) rotating in the storage tank (8) is fixedly connected with the first bevel gear (13), the first bevel gear (13) is meshed with the second bevel gear (14), the inner wall of the second bevel gear (14) is fixedly connected with the connecting column (15), and a cleaning brush (16) is arranged below the connecting column (15) for cleaning impurities on the upper end of the filter screen.

3. The inert gas storage device for a very large crude carrier according to claim 1, wherein: The flow equalizing member includes a guide plate (17), a flow equalizing plate (18), a fixed column (19) and a second motor (20), the guide plate (17) is arranged between the connecting column (15) and the cleaning brush (16), the upper end of the guide plate (17) is fixedly connected with the connecting column (15), and the lower end is fixedly connected with the cleaning brush (16), the lower end of the fixed column (19) is rotatably connected with the bottom wall of the storage tank (8), and a second sealing ring is arranged on the outer wall of the fixed column (19), the output shaft of the second motor (20) installed at the bottom of the storage tank (8) is fixedly connected with the bottom end of the fixed column (19), the flow equalizing plate (18) is fixed on the outer wall of the fixed column (19), and the outer wall of one end of the flow equalizing plate (18) away from the fixed column (19) contacts the inner wall of the storage tank (8) and is slidably connected with the inner wall of the storage tank (8), and the shape of the flow equalizing plate (18) is spiral.

4. An inert gas storage device for a very large crude carrier according to claim 1, characterized in that: The moving component includes a limiting plate (21), a driving plate (22), a ball screw (23) and a driving component. An opening (24) is formed in the storage tank (8). The limiting plate (21) is slidably arranged in the opening (24). A sealing rubber block is arranged on the outer wall of the limiting plate (21). The inner wall of the limiting plate (21) is fixedly connected to the outer wall of the filter plate (9). The inner wall of the limiting plate (21) is semi-circular and matches the shape of the filter plate (9). Two symmetrically distributed driving plates (22) are fixedly connected to the upper end of the limiting plate (21). The two driving plates (22) are respectively threadedly connected to the ball screw (23). The two ball screws (23) are controlled to rotate by the driving component.

5. The inert gas storage device for a very large crude carrier according to claim 4, wherein: The two driving plates (22) are L-shaped. Two symmetrically distributed support plates (25) are fixedly connected to the outer wall of the storage tank (8). The two ball screws (23) are rotatably connected to the support plates (25). The driving plates (22) are slidably connected to the upper ends of the support plates (25).

6. The inert gas storage device for a very large crude carrier according to claim 4, wherein: The driving component includes a third motor (26), a sprocket and a chain (27). The third motor (26) is fixedly installed on the outer wall of the upper end of the storage tank (8). Sprockets are fixedly connected to the outer walls of the third motor (26) and the two ball screws (23). The multiple sprockets are connected by the chain (27).

7. An inert gas storage device for a very large crude carrier according to claim 1, characterized in that: The supply component includes a fourth pipe (28), a fifth pipe (29) and a sixth pipe (30). The fourth pipe (28) is connected to the first pipe (3) through a first flange. The fourth pipe (28) communicates with the second pipe (4). The fifth pipe (29) is connected to the fourth pipe (28) through a second flange. The sixth pipe (30) is fixedly arranged in the fifth pipe (29). A fourth cavity (31) is formed in the sixth pipe (30). A third cavity (32) is formed between the outer wall of the sixth pipe (30) and the inner wall of the fifth pipe (29). The fourth pipe (28) communicates with the sixth pipe (30).

8. An inert gas storage device for a very large crude carrier according to claim 7, characterized in that: A pressure detector (33) is installed on the fourth pipe (28). The pressure detector (33) is electrically connected to an alarm (34) through a controller. The alarm (34) and the controller are installed at one end of the pressure detector (33).

9. An inert gas storage device for a very large crude carrier according to claim 7, characterized in that: An output pipe (35) is arranged at the bottom end of the storage tank (8). One ends of the fifth pipe (29) and the sixth pipe (30) are placed inside the generator (2).

10. A method of using a super-large oil tanker inert gas storage device according to any one of claims 1-9, characterized in that: The specific content is as follows: S1. Store the fuel in the supply tank (1). The supply tank (1) conveys the fuel to the generator (2) through a pipeline supply system. In the pipeline supply system, the fuel is conveyed through the first channel (6) into the fourth pipeline (28), and then conveyed to the generator (2) through the sixth pipeline (30). When the first pipeline (3) and the sixth pipeline (30) are damaged, the fuel begins to enter the second channel (7) through the first channel (6), and enters the third channel from the fourth channel. If a failure occurs in the conveying pipeline corresponding to one of the channels, the fuel can continue to be supplied to the generator (2) through the other channel to ensure the continuous operation of the generator (2). The fuel enters the generator (2) through the supply component; S2. The generator (2) uses the supplied fuel for combustion and other reactions to generate a gas containing inert components such as carbon dioxide and nitrogen; S3. The generated inert gas is conveyed from the generator (2) to the storage tank (8) through the seventh pipeline (10). When entering the storage tank (8), the gas first passes through the filter plate (9) for filtration to remove impurities therein. At the same time, the cleaning component can be started regularly or as needed. The cleaning brush (16) is driven by the first motor (11) to clean the filter plate (9) to prevent impurities from clogging the filter plate (9). The filtered inert gas is in the storage tank (8) and is evenly distributed and stored through the flow equalizing component. The second motor (20) drives the fixed column (19) and the spiral flow equalizing plate (18) to rotate, and evenly disperses the gas in the storage tank (8) to improve the storage efficiency and stability; S4. The output pipe (35) at the bottom of the storage tank (8) can convey the stored inert gas to a use place such as a cargo oil tank as needed.

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