Methanol fuel cabin for marine low-speed diesel engine

Abstract

The invention discloses a methanol fuel cabin for a marine low-speed diesel engine in the technical field of ships, the methanol fuel cabin comprises an outer cabin body and an inner cabin body arranged in the outer cabin body, a gap is arranged between the inner cabin body and the outer cabin body, and the gap is filled with gas; mounting holes are formed in the inner walls of the two ends of the inner cabin body, a moving rod is slidably arranged between inner cavities of the two mounting holes, and a plurality of partition plates which are sequentially distributed at intervals in the length extension direction of the moving rod are arranged on the moving rod; a cooling device is arranged in the outer cabin body, a control device is arranged on the inner cabin body, the partition plates are arranged in the inner cabin body to divide the interior of the inner cabin body, the shaking amplitude of methyl alcohol is reduced when the inner cabin body shakes, impact on the inner cabin body is reduced, and the service life of the inner cabin body is prolonged. And the control equipment drives the cooling equipment to work when the moving rod moves so as to cool the inner cabin body, so that the temperature is not greatly increased when the methanol shakes, and the probability of potential safety hazards is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ships, in particular to a methanol fuel tank used for a low-speed marine diesel engine. Background Art

[0002] Methanol fuel is a low-carbon, oxygen-containing clean energy source with a clean combustion process. It can significantly reduce the emission of harmful substances such as sulfur oxides and nitrogen oxides, and meets the needs of green development in the shipping industry. Therefore, methanol fuel is regarded as one of the most promising alternative fuels for internal combustion engines and has broad development prospects in ship power systems. When existing low-speed marine diesel engines use methanol as fuel, it is necessary to install a methanol fuel tank on board to store methanol fuel. As the ship moves, the methanol fuel tank will shake, causing the stored methanol to impact the methanol fuel tank when shaking. Over time, the methanol fuel tank will be deformed or damaged. In addition, excessive shaking of methanol will cause friction between the methanol and the inner wall of the methanol fuel tank, causing the temperature of methanol to rise, posing certain safety hazards. Summary of the invention

[0003] The object of the present invention is to provide a methanol fuel tank for a marine low-speed diesel engine, so as to solve the problem raised in the above background technology that the methanol fuel tank will shake during the movement of the ship, causing the stored methanol to impact the methanol fuel tank during the shaking, which will cause the methanol fuel tank to deform or be damaged over time, and excessive shaking of the methanol will cause the methanol to rub against the inner wall of the methanol fuel tank, causing the temperature of the methanol to rise, posing certain safety hazards.

[0004] To achieve the above object, the present invention provides the following technical solution: A methanol fuel tank for a marine low-speed diesel engine, comprising: an outer tank body and an inner tank body arranged in the outer tank body, wherein a gap is provided between the inner tank body and the outer tank body and the gap is filled with gas;

[0005] The inner walls at both ends of the inner cabin are provided with mounting holes, a moving rod is slidably arranged between the inner cavities of the two mounting holes, and the moving rod is provided with a plurality of partitions which are sequentially spaced and distributed along the length extension direction of the moving rod;

[0006] The outer cabin is provided with a cooling device, and the inner cabin is provided with a control device, which is used to drive the cooling device to work when the methanol inside the inner cabin shakes and impacts the partition to move the moving rod, so as to cool the inner cabin.

[0007] Preferably, the control device includes a central control device and a detection component, the detection component includes a mounting bracket arranged on the outside of the end of the inner cabin body, a second pressure sensor arranged on the mounting bracket, a mounting groove arranged on the outside of the end of the inner cabin body, and a pressure block slidably arranged in the mounting groove, the pressure block is driven to move by the movement of the moving rod, the cooling device includes a heat exchanger and a fan, the central control device is used to receive information from the second pressure sensor and to control the opening and closing of the heat exchanger and the fan; when the moving rod moves, the moving rod will press the touch switch, so that the electromagnet is energized to generate magnetic force for repelling the pressure block, pushing the pressure block to the outside of the mounting groove, so that it presses the second pressure sensor.

[0008] Preferably, an electromagnet for pushing the pressing block toward the outside of the mounting groove is provided in the mounting groove, an elastic member is provided between the mounting groove and the pressing block, a supporting block is provided in the mounting hole, and a touch switch for controlling the power supply of the electromagnet is provided on the supporting block.

[0009] Preferably, there are several support blocks, each of which is provided with a touch switch, and the support blocks are arranged in sequence along the length extension direction of the mounting hole. The support blocks are slidably arranged in the mounting hole, and an elastic element is provided between two adjacent support blocks. There are several electromagnets and they correspond one to one with several touch switches. The touch switches are respectively used to connect the power supply of the electromagnets, and the magnetic force of the electromagnets is different.

[0010] Preferably, the support block is provided with an elastic cover for covering the touch switch.

[0011] Preferably, a storage box is provided on the top of the inner cabin body, an opening for communicating with the inner cabin body is provided at the bottom of the storage box, a support plate and a spring member connected to the support plate are slidably provided in the storage box, the storage box is filled with liquid above the support plate, and a through hole is provided on the side wall of the storage box;

[0012] Wherein, a feeding device is connected to the storage box, and a travel switch for controlling the start-up of the feeding device is provided on the support plate.

[0013] Preferably, a slide groove extending along the length direction of the moving rod is provided on the inner wall of the inner cabin, a slider for sliding in the slide groove is provided on one of the partitions, and a reset elastic member is provided between the slider and the slide groove;

[0014] Wherein, a receiving groove is arranged on the inner side wall of the slide groove, and a baffle plate for slidingly inserting into the receiving groove is arranged on the side wall of the slide block.

[0015] Preferably, a first pressure sensor is provided in the outer cabin, and an air pressure balance device for communicating with the inner cavity of the outer cabin is provided on the outer cabin. The central control device is used to receive information from the first pressure sensor and to control the opening and closing of the air pressure balance device.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present application, a partition is set inside the inner cabin to divide the interior of the inner cabin, so that the amplitude of methanol shaking when the inner cabin shakes is reduced, thereby reducing the impact on the inner cabin, and the control device drives the cooling device to work when the moving rod moves to cool the inner cabin, so that the temperature of the methanol will not rise significantly when the methanol shakes, thereby reducing the probability of safety hazards, and the outer cabin covers the outside of the inner cabin, which can isolate the inner cabin from the influence of external factors and increase the safety of methanol storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the methanol fuel tank of the present invention;

[0018] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the storage tank of the present invention.

[0021] In the figure: 1. outer cabin; 2. inner cabin; 3. partition; 4. moving rod; 5. cooling equipment; 6. storage box; 7. central control equipment; 8. air pressure balance equipment; 9. first pressure sensor; 10. mounting hole; 11. mounting frame; 12. second pressure sensor; 13. mounting groove; 14. pressure block; 15. elastic member; 16. electromagnet; 17. support block; 18. elastic element; 19. touch switch; 20. elastic cover; 21. slide groove; 22. slider; 23. reset elastic member; 24. storage groove; 25. baffle; 26. through hole; 27. support plate; 28. spring member; 29. ​​travel switch. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1A methanol fuel tank for a marine low-speed diesel engine comprises an outer tank body 1 and an inner tank body 2, wherein the inner tank body 2 is installed at the bottom of the inner cavity of the outer tank body 1, a gap is provided between the inner tank body 2 and the outer tank body 1, and the gap is filled with gas (the gas refers to an inert gas), and the interior of the inner tank body 2 is used to store methanol fuel.

[0025] It should be noted that a material injection port is installed on the outer cabin body 1, and the material injection port is connected with the inner cabin body 2 through a pipeline. Methanol is injected into the inner cavity of the inner cabin body 2 through the material injection port and the pipeline for storage; a discharge pipe is installed on the side wall of the inner cabin body 2, and the end of the discharge pipe extends to the outside of the outer cabin body 1, and the methanol inside the inner cabin body 2 is transported to the outside through the discharge pipe; by covering the outer side of the inner cabin body 2 with the outer cabin body 1, the influence of external factors on the inner cabin body 2 is reduced, so that the storage of methanol is safer.

[0026] See also Figure 1 and Figure 2 , mounting holes 10 are provided on the inner walls at both ends of the inner cabin 2, a moving rod 4 is slidably provided between the inner cavities of the two mounting holes 10, a plurality of partitions 3 are provided on the outer wall of the moving rod 4, and the plurality of partitions 3 are sequentially spaced along the length extension direction of the moving rod 4, and the plurality of partitions 3 are in contact with the inner cavity top of the inner cabin 2 except that the tops of the plurality of partitions 3 are not in contact with the inner cavity top of the inner cabin 2, and the other areas are in contact, and the inner cavity of the inner cabin 2 is divided by the plurality of partitions 3, so that when the inner cabin 2 shakes, part of the methanol will directly contact the partitions 3, so that the methanol inside the inner cabin 2 will not form a whole and impact in one direction, thereby reducing the shaking amplitude of the methanol inside the inner cabin 2; a cooling device 5 is provided inside the outer cabin 1, and a control device is provided on the inner cabin 2;

[0027] Among them, see Figure 1 and Figure 2 The control device includes a central control device 7 (the central control device 7 refers to a control device, such as a computer) and a detection component, and the detection component includes a mounting frame 11, a second pressure sensor 12, a pressure block 14 and other components; the mounting frame 11 is installed on the outer side of the end of the inner cabin 2, and the second pressure sensor 12 is arranged on the mounting frame 11. A mounting groove 13 is opened on the outer side of the end of the inner cabin 2. The pressure block 14 is slidably inserted in the inner cavity of the mounting groove 13. The pressure block 14 is driven to move by the moving rod 4. The cooling device 5 is a heat exchanger and a fan. There are multiple heat exchangers and fans (the two correspond one to one). The fan is installed in different areas inside the outer cabin 1 to guide the circulation of gas between the outer cabin 1 and the inner cabin 2. The central control device 7 is used to receive information transmitted by the second pressure sensor 12 (the second pressure sensor 12 continuously transmits information to the central control device 7), and the central control device 7 is used to control the start and stop of the heat exchanger and the fan.

[0028] It should be noted that components such as a mounting frame 11 , a second pressure sensor 12 , and a pressure block 14 are installed at both left and right ends of the inner cabin 2 .

[0029] Working principle: When the methanol inside the inner cabin 2 shakes due to the movement or shaking of the ship, the methanol will exert pressure on the partition 3, causing the partition 3 to move to the left or right and move with the moving rod 4; the movement of the moving rod 4 will cause the pressure block 14 to move and press the second pressure sensor 12. After the central control device 7 receives the information that the second pressure sensor 12 is pressed, it controls the cooling device 5 to energize and circulate the gas between the outer cabin 1 and the inner cabin 2, and the circulating gas will be cooled by the heat exchanger, so that the gas cools the inner cabin 2.

[0030] In this embodiment, as a further optimized solution, please refer to Figure 2 An electromagnet 16 is provided in the inner cavity of the mounting groove 13, and the electromagnet 16 is located on the inner side of the pressing block 14. A magnetic block is installed on the side of the pressing block 14 facing the electromagnet 16. The magnetic poles of the magnetic block and the electromagnet 16 on the side close to each other are the same (the two will generate repulsive force when they are close to each other). An elastic member 15 (spring) is provided between the mounting groove 13 and the pressing block 14. A support block 17 is provided in the inner cavity of the mounting hole 10. A touch switch 19 is provided on the side of the support block 17 facing the moving rod 4. The touch switch 19, the power supply, and the electromagnet 16 are connected in series. When the moving rod 4 moves, the moving rod 4 presses the touch switch 19, so that the electromagnet 16 is energized to generate magnetic force for repelling the magnetic block, and the pressing block 14 is pushed to the outside of the mounting groove 13, so that it presses the second pressure sensor 12.

[0031] In this embodiment, as a further optimized solution, please refer to Figure 2There are several support blocks 17, and touch switches 19 are provided on several support blocks 17. Several support blocks 17 are arranged in sequence along the length extension direction of the mounting hole 10. Several support blocks 17 are slidably arranged in the inner cavity of the mounting hole 10. The moving direction of the support block 17 is the same as the moving direction of the moving rod 4. An elastic element 18 (spring) is provided between two adjacent support blocks 17. There are several electromagnets 16, and several electromagnets 16 correspond to several touch switches 19 one by one. Several touch switches 19 are respectively used to connect the power supply of several electromagnets 16, and the magnetic force of several electromagnets 16 is different. The touch switch 19 at the deepest part of the mounting hole 10 is connected to the electromagnet 16 with the largest magnetic force. By analogy, several touch switches 19 are connected to electromagnets 16 with different magnetic force according to the depth inside the mounting hole 10. The touch switch 19 in the deepest area is connected to the electromagnet 16 with the largest magnetic force. Then, as the depth gradually decreases, the magnetic force of the electromagnet 16 connected to the touch switch 19 also gradually decreases; when the amplitude of methanol shaking is large, the impact force on the partition 3 will also increase, thereby increasing the amplitude of movement of the moving rod 4; due to the increase in the movement amplitude of the moving rod 4, the end of the moving rod 4 will be inserted into the deeper part of the mounting hole 10, so that the touch switches 19 on the multiple support blocks 17 are squeezed (the greater the movement amplitude of the moving rod 4, the more touch switches 19 are squeezed), and the power supply of the multiple electromagnets 16 is turned on, so that the repulsive force on the pressing block 14 is increased, so as to increase the squeezing force applied by the pressing block 14 to the second pressure sensor 12, and the central control device 7 controls the output power and working time of the fan and heat exchanger according to the pressure value transmitted by the second pressure sensor 12 (the greater the pressure, the greater the output power of the fan and heat exchanger, and the longer the working time), thereby ensuring the cooling effect of the cooling equipment on the inner cabin 2.

[0032] In this embodiment, as a further optimized solution, please refer to Figure 2 An elastic cover 20 (made of rubber, equivalent to an airbag) is provided on the support block 17, and the touch switch 19 is located inside the elastic cover 20, which separates the touch switch 19 from the outside and protects it.

[0033] In this embodiment, as a further optimized solution, please refer to Figure 1 and Figure 4A storage box 6 is provided on the top of the inner cabin body 2, and an opening is provided at the bottom of the storage box 6, through which the inner cavity of the storage box 6 is connected with the inner cavity of the inner cabin body 2, a support plate 27 is slidably provided in the inner cavity of the storage box 6, and the support plate 27 can move up and down (the outer wall of the support plate 27 and the inner wall of the storage box 6 are sealed), a spring member 28 (spring) is installed between the storage box 6 and the support plate 27, the inner cavity of the storage box 6 is filled with liquid (water), and the liquid is above the support plate 27, and through holes 26 are provided on the left and right side walls of the storage box 6; a feeding device is connected to the storage box 6 (the feeding device refers to a water storage tank and a pump arranged inside the water storage tank, and the outlet of the pump is connected with the inner cavity of the storage box 6 through a pipeline), a travel switch 29 is installed on the top wall of the support plate 27, and the travel switch 29, the power supply and the pump are connected in series; when the fan is working, the gas is in the outer cabin body 1 When the gas flows between the inner and outer chambers 2, the gas will flow into the interior of the storage box 6 through the through hole 26 on one side, and then flow out of the storage box 6 from the through hole 26 on the other side; when the gas flows inside the storage box 6, the liquid inside the storage box 6 will evaporate, and the heat will be absorbed by the evaporation of the liquid, which is used to reduce the temperature of the inner chamber 2 (the support plate 27 is made of a metal heat-conducting material, such as copper, steel, etc.). At the same time, as the internal liquid of the storage box 6 decreases, the gravity exerted on the support plate 27 gradually decreases, and the spring member 28 will gradually move the support plate 27 upward, so that the space below the inner cavity of the storage box 6 that is connected to the inner cavity of the inner chamber 2 is increased, which is used to reduce the pressure inside the inner chamber 2 and increase the safety of material storage in the inner chamber 2; when the support plate 27 moves upward and the travel switch 29 contacts the top of the inner cavity of the storage box 6, the feeding equipment is powered on to replenish material into the storage box 6, so that the support plate 27 moves down and resets.

[0034] In this embodiment, as a further optimized solution, please refer to Figure 1 and Figure 3 A slide groove 21 is provided on the inner wall of the inner cabin 2, and the slide groove 21 extends along the length direction of the moving rod 4. A slider 22 is provided on a partition 3, and the slider 22 is slidably arranged in the inner cavity of the slide groove 21. A reset elastic member 23 (spring) is provided between the slider 22 and the slide groove 21. The reset elastic member 23 is used to drive the slider 22 to reset, so that the moved partition 3 can be reset; the left and right inner walls of the slide groove 21 are provided with storage grooves 24, and the left and right side walls of the slider 22 are provided with baffles 25. The two baffles 25 are respectively slidably inserted in the inner cavities of the two storage grooves 24 to prevent methanol from entering the inner cavity of the slide groove 21 and contacting the reset elastic member 23.

[0035] In this embodiment, as a further optimized solution, please refer to Figure 1A first pressure sensor 9 is provided in the inner cavity of the outer cabin 1, and the first pressure sensor 9 is used to detect the air pressure between the outer cabin 1 and the inner cabin 2. An air pressure balance device 8 is provided on the outer cabin 1 (the air pressure balance device 8 includes an air storage box and an air pump connected to the air storage box, and the air pump is connected to the inner cavity of the outer cabin 1 through a conduit). The central control device 7 is used to receive information from the first pressure sensor 9, and the central control device is also used to control the opening and closing of the air pressure balance device 8; the first pressure sensor 9 will continuously transmit detection information to the central control device 7. When the central control device 7 detects that the air pressure between the outer cabin 1 and the inner cabin 2 increases, it will control the air pump to work, and draw the gas between the outer cabin 1 and the inner cabin 2 into the interior of the air storage box, so that the air pressure on the inner cabin 2 will not increase, thereby protecting it.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A methanol fuel tank for a marine low-speed diesel engine, characterized in that: include: An outer cabin (1) and an inner cabin (2) arranged in the outer cabin (1), wherein a gap is provided between the inner cabin (2) and the outer cabin (1) and the gap is filled with gas; The inner walls at both ends of the inner cabin body (2) are provided with mounting holes (10), a moving rod (4) is slidably arranged between the inner cavities of the two mounting holes (10), and the moving rod (4) is provided with a plurality of partitions (3) distributed in sequence along the length extension direction of the moving rod (4); The outer cabin (1) is provided with a cooling device (5), and the inner cabin (2) is provided with a control device, which is used to drive the cooling device (5) to work when the methanol inside the inner cabin (2) shakes and impacts the partition (3) to move the moving rod (4), so as to cool the inner cabin (2).

2. A methanol fuel tank for a marine low-speed diesel engine according to claim 1, characterized in that: The control device comprises a central control device (7) and a detection component, wherein the detection component comprises a mounting frame (11) arranged on the outer side of the end of the inner cabin (2), a second pressure sensor (12) arranged on the mounting frame (11), a mounting groove (13) arranged on the outer side of the end of the inner cabin (2), and a pressure block (14) slidably arranged in the mounting groove (13), wherein the pressure block (14) is driven to move by the movement of the moving rod (4), and the cooling device (5) comprises a heat exchanger and a fan, and the central control device (7) is used to receive information from the second pressure sensor (12) and to control the opening and closing of the heat exchanger and the fan; when the moving rod (4) moves, the moving rod (4) presses the touch switch (19), so that the electromagnet (16) is energized to generate a magnetic force for repelling the pressure block (14), pushing the pressure block (14) to the outer side of the mounting groove (13), so that it presses the second pressure sensor (12).

3. A methanol fuel tank for a marine low-speed diesel engine according to claim 2, characterized in that: An electromagnet (16) for pushing the pressing block (14) toward the outside of the mounting groove (13) is provided in the mounting groove (13); an elastic member (15) is provided between the mounting groove (13) and the pressing block (14); a supporting block (17) is provided in the mounting hole (10); and a touch switch (19) for controlling the power supply of the electromagnet (16) is provided on the supporting block (17).

4. A methanol fuel tank for a marine low-speed diesel engine according to claim 3, characterized in that: There are a plurality of support blocks (17), each of which is provided with a touch switch (19). The support blocks (17) are arranged in sequence along the length extension direction of the mounting hole (10) at intervals, and the support blocks (17) are slidably arranged in the mounting hole (10). An elastic element (18) is provided between two adjacent support blocks (17). There are a plurality of electromagnets (16) and they correspond to the touch switches (19) one by one. The touch switches (19) are respectively used to connect the power supply of the electromagnets (16). The magnetic forces of the electromagnets (16) are different in magnitude.

5. The methanol fuel tank for a marine low-speed diesel engine according to claim 3, characterized in that: The support block (17) is provided with an elastic cover (20) for covering the touch switch (19).

6. A methanol fuel tank for a marine low-speed diesel engine according to claim 2, characterized in that: A storage box (6) is provided on the top of the inner cabin (2), an opening for communicating with the inner cabin (2) is provided at the bottom of the storage box (6), a support plate (27) and a spring member (28) connected to the support plate (27) are slidably provided in the storage box (6), the storage box (6) is filled with liquid above the support plate (27), and a through hole (26) is provided on the side wall of the storage box (6); The storage box (6) is connected to a feeding device, and the support plate (27) is provided with a travel switch (29) for controlling the start of the feeding device.

7. A methanol fuel tank for a marine low-speed diesel engine according to claim 2, characterized in that: The inner wall of the inner cabin (2) is provided with a slide groove (21) extending along the length direction of the moving rod (4); one of the partitions (3) is provided with a slider (22) for sliding in the slide groove (21); a reset elastic member (23) is provided between the slider (22) and the slide groove (21); The inner side wall of the slide groove (21) is provided with a receiving groove (24), and the side wall of the slide block (22) is provided with a baffle (25) for slidingly inserting into the receiving groove (24).

8. A methanol fuel tank for a marine low-speed diesel engine according to claim 2, characterized in that: The outer cabin (1) is provided with a first pressure sensor (9), the outer cabin (1) is provided with an air pressure balancing device (8) for communicating with the inner cavity of the outer cabin (1), and the central control device (7) is used to receive information from the first pressure sensor (9) and to control the opening and closing of the air pressure balancing device (8).

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