Methanol fuel supply cabin

Abstract

The utility model belongs to the technical field of marine equipment, and discloses a methanol fuel supply cabin which comprises a main cabin body, a backflow buffer tank and a backflow buffer container, the main cabin body is communicated with a supply pipe, the supply pipe is communicated with marine methanol supply equipment, a first switch valve is arranged on the supply pipe, the backflow buffer tank is arranged in the main cabin body, and the backflow buffer container is arranged in the main cabin body. The reflux buffer tank is communicated with a reflux pipe, the reflux pipe is communicated with marine methanol supply equipment, a plurality of overflowing holes are formed in the reflux buffer tank, and the reflux buffer container is arranged in the main cabin body, is positioned below the reflux buffer tank and is used for receiving a mixed solution of methanol and oil flowing out of the reflux buffer tank; and an overflow port communicated with the interior of the main cabin body is formed above the backflow buffer container. According to the methanol fuel supply cabin, residual methanol fuel liquid in the marine methanol supply equipment can be recycled after a ship is stopped or before the ship is restarted, the recycling process is smooth, splashing is effectively prevented, and oil in the recycled methanol fuel liquid can be effectively separated.

Description

Technical Field

[0001] The utility model relates to the technical field of marine equipment, in particular to a methanol fuel supply cabin. Background Art

[0002] In recent years, methanol has gradually been favored by shipowners as a new energy source. Its biggest advantage is that it can reduce the emission of harmful gases and carbon dioxide, which is green and environmentally friendly. During the ship's voyage, the main engine burns methanol to generate power to propel the ship forward, and a tank is needed to store and supply methanol fuel, namely the methanol fuel supply tank.

[0003] For the marine methanol dual-fuel main engine, when switching to methanol as fuel, the methanol in the methanol fuel supply tank is transported to the main engine for combustion through the methanol supply unit. Methanol is a low-flash point fuel. For safety reasons, after the main engine is shut down or before it is restarted, the residual methanol liquid in the methanol supply unit, the main engine and the related methanol piping system needs to be purged back to the methanol fuel supply tank by high-pressure nitrogen. In the above-mentioned purging process, due to the fast flow rate of the reflux methanol, splashing will occur when it re-enters the methanol fuel supply tank, affecting the stability of the subsequent methanol supply. In addition, in the above-mentioned purging process, a small amount of sealing oil inside the main engine may be purged back to supply methanol fuel, and this part of the oil is obviously not allowed to be provided to the main engine as methanol fuel for combustion again. Therefore, how to avoid splashing during the methanol reflux process and how to filter out the mixed oil in the reflux methanol fuel have become the current efforts of technicians in the field. Utility Model Content

[0004] The utility model aims to provide a methanol fuel supply tank, which can recover the methanol fuel liquid remaining in the ship's methanol supply equipment after the ship is shut down or before it is restarted, and the recovery process is smooth and effective to prevent splashing, and the oil content in the recovered methanol fuel liquid can be effectively separated.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A methanol fuel supply tank, comprising:

[0007] A main cabin, wherein the main cabin is connected to a supply pipe, the supply pipe is connected to a marine methanol supply device, and a first switch valve is provided on the supply pipe;

[0008] A reflux buffer tank is arranged in the main cabin, the reflux buffer tank is connected with a reflux pipe, the reflux pipe is connected with the marine methanol supply equipment, and a plurality of flow holes are opened on the reflux buffer tank;

[0009] A reflux buffer container is arranged in the main cabin and below the reflux buffer tank, and is used to receive the methanol and oil mixture flowing out of the reflux buffer tank. An overflow port connected to the inside of the main cabin is provided on the top of the reflux buffer container.

[0010] Preferably, the reflux pipe includes a first reflux pipe and a second reflux pipe, and the marine methanol supply equipment includes a marine methanol supply unit and a marine methanol supply pipe;

[0011] The first end of the first reflux pipe is connected to the marine methanol supply unit, and the second end of the first reflux pipe is connected to the reflux buffer tank;

[0012] The first end of the second reflux pipe is connected to the marine methanol supply pipe, and the second end of the second reflux pipe is connected to the reflux buffer tank.

[0013] Preferably, a second switch valve is provided on the first return pipe, and a third switch valve is provided on the second return pipe.

[0014] Preferably, the reflux buffer tank is detachably arranged on the main cabin.

[0015] Preferably, a baffle is provided in the main cabin between the reflux buffer tank and the reflux buffer container, and the baffle is spaced apart from the bottom of the reflux buffer container.

[0016] Preferably, an oil level sensor is provided in the reflux buffer container.

[0017] Preferably, the reflux buffer container is connected to a first leakage pipe, and a fourth switch valve is provided on the first leakage pipe.

[0018] Preferably, the main cabin is connected to a replenishing pipe, the replenishing pipe is inserted from the outside of the main cabin to the bottom of the main cabin, and a fifth switch valve is provided on the replenishing pipe.

[0019] Preferably, a second drainage pipe is provided at the bottom of the main cabin body, and a sixth switch valve is provided on the second drainage pipe.

[0020] Preferably, the bottom end surface of the main cabin body is tilted downward from the first side to the second side, and the second drain pipe is located on the second side of the bottom end surface of the main cabin body.

[0021] Beneficial effects:

[0022] The methanol fuel supply tank provided by the utility model, when the ship's main engine is working, opens the first switch valve to open the supply pipe, and the methanol fuel liquid in the main tank body enters the ship's methanol supply equipment through the supply pipe in turn, and the ship's methanol supply equipment supplies methanol to the ship's main engine. After the ship's main engine is shut down or before it is restarted, the methanol fuel remaining in the ship's methanol supply equipment can flow back to the reflux buffer tank through the reflux pipe. The reflux buffer tank is provided with a flow hole, so that the refluxed methanol fuel liquid can gradually flow out from the flow hole, thereby effectively playing a slow flow role and effectively avoiding the splashing of the refluxed fuel liquid. The reflux buffer container is arranged in the main tank body and is located below the reflux buffer tank, and is used to receive the fuel liquid flowing out of the reflux buffer tank. Since the refluxed methanol fuel liquid is mixed with oil mixed with the ship's methanol supply equipment, this part of the oil needs to be filtered. Based on the principle that the density of oil is greater than that of methanol, as the reflux mixture in the reflux buffer container gradually accumulates, the oil in the methanol fuel settles to the bottom of the reflux buffer container, and the methanol fuel is located above the oil boundary and temporarily buffered in the reflux buffer container. As this part of the reflux methanol gradually accumulates, the liquid level gradually rises until it reaches the overflow port and overflows and finally flows back into the main cabin for subsequent use, while the oil is retained at the bottom of the reflux buffer container, achieving a reliable oil filtering and separation effect. The methanol fuel supply tank can recycle the residual methanol fuel liquid in the marine methanol supply equipment after the ship is shut down or before it is restarted. The liquid flows smoothly during the recovery process to effectively prevent splashing, and can effectively separate the oil in the recovered methanol fuel liquid. It has a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a structural schematic diagram of a methanol fuel supply cabin.

[0024] In the figure:

[0025] 1. Main cabin; 11. Supply pipe; 111. First switch valve; 12. Supplement pipe; 121. Fifth switch valve; 13. Second drain pipe; 131. Sixth switch valve;

[0026] 2. Reflux buffer tank; 201. flow hole; 21. first reflux pipe; 211. second switch valve; 22. second reflux pipe; 221. third switch valve;

[0027] 3. Reflux buffer container; 301. Overflow port; 31. First drain pipe; 311. Fourth switch valve;

[0028] 4. Baffle;

[0029] 5. Oil level sensor. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] This embodiment provides a methanol fuel supply tank. Figure 1As shown, the methanol fuel supply cabin includes a main cabin body 1, a reflux buffer tank 2 and a reflux buffer container 3. Among them, the main cabin body 1 is connected to a supply pipe 11, the supply pipe 11 is connected to the ship methanol supply equipment, and a first switch valve 111 is provided on the supply pipe 11. The reflux buffer tank 2 is arranged in the main cabin body 1, and the reflux buffer tank 2 is connected to a reflux pipe, the reflux pipe is connected to the ship methanol supply equipment, and a plurality of flow holes 201 are opened on the reflux buffer tank 2. The reflux buffer container 3 is arranged in the main cabin body 1 and is located below the reflux buffer tank 2, and is used to receive the methanol and oil mixture flowing out of the reflux buffer tank 2. The top of the reflux buffer container 3 has an overflow port 301 connected to the inside of the main cabin body 1.

[0035] In this embodiment, when the ship's main engine is working, the first switch valve 111 is opened to open the supply pipe, and the methanol fuel liquid in the main cabin 1 enters the ship's methanol supply equipment through the supply pipe in turn, and the ship's methanol supply equipment supplies methanol to the ship's main engine. After the ship's main engine is shut down or before it is restarted, the methanol fuel remaining in the ship's methanol supply equipment can flow back to the reflux buffer tank 2 through the reflux pipe. A flow hole 201 is provided in the reflux buffer tank 2, so that the refluxed methanol fuel liquid can gradually flow out from the flow hole 201, thereby effectively playing a slow flow role and effectively avoiding the splashing of the refluxed fuel liquid. The reflux buffer container 3 is arranged in the main cabin 1 and is located below the reflux buffer tank 2, and is used to receive the fuel liquid flowing out of the reflux buffer tank 2. Since the refluxed methanol fuel liquid is mixed with oil mixed with the ship's methanol supply equipment, this part of the oil needs to be filtered. Utilizing the principle that the density of oil is greater than that of methanol, as the reflux mixed liquid in the reflux buffer container 3 gradually accumulates, the oil in the methanol fuel settles to the bottom of the reflux buffer container 3, and the methanol fuel is located at the upper boundary of the oil and temporarily buffered in the reflux buffer container 3. As this part of the reflux methanol gradually accumulates, the liquid level gradually rises until it reaches the overflow port 301 and overflows and finally flows back into the main cabin 1 for subsequent use, while the oil is retained at the bottom of the reflux buffer container 3, achieving a reliable oil filtering and separation effect. The methanol fuel supply tank can recycle the methanol fuel liquid remaining in the marine methanol supply equipment after the ship is shut down or before it is restarted. The liquid flows smoothly during the recovery process to effectively prevent splashing, and can effectively separate the oil in the recovered methanol fuel liquid. It has a simple structure and strong practicality.

[0036] Specifically, the marine methanol supply equipment includes a marine methanol supply unit and a marine methanol supply pipe 11. The marine methanol supply unit is connected to the main engine through the marine methanol supply pipe 11, and the methanol fuel liquid in the main cabin 1 is sequentially supplied to the marine methanol supply system through the supply pipe 11, and then supplied to the main engine through the marine methanol supply pipe by the marine methanol supply system.

[0037] In this embodiment, the reflux pipe includes a first reflux pipe 21 and a second reflux pipe 22, the first end of the first reflux pipe 21 is connected to the ship methanol supply unit, the second end of the first reflux pipe 21 is connected to the reflux buffer tank 2, the first end of the second reflux pipe 22 is connected to the ship methanol supply pipe 11, and the second end of the second reflux pipe 22 is connected to the reflux buffer tank 2. Specifically, the residual methanol in the ship methanol supply unit eventually flows back to the reflux buffer tank 2 through the first reflux pipe 21. The residual methanol in the ship methanol supply pipe 11 eventually flows back to the reflux buffer tank 2 through the second reflux pipe 22. Specifically, the reliable reflux of the residual methanol is achieved by purging the interior of the ship methanol supply pipe 11 and the interior of the ship methanol supply unit with high-pressure nitrogen.

[0038] In this embodiment, a second switch valve 211 is provided on the first reflux pipe 21, and a third switch valve 221 is provided on the second reflux pipe 22. When residual methanol needs to be refluxed, the second switch valve 211 opens the first reflux pipe 21, and the third switch valve 221 opens the second reflux pipe 22. When the ship's main engine is working, methanol reflux is not performed, the second switch valve 211 closes the first reflux pipe 21, and the third switch valve 221 closes the second reflux pipe 22.

[0039] In this embodiment, the reflux buffer tank 2 is detachably arranged on the main cabin 1. Since the refluxed methanol liquid contains oil, which has a high viscosity, long-term accumulation may block the flow hole 201 of the reflux buffer tank 2, causing the reflux liquid to be blocked, and considering that the reflux liquid is under pressure, long-term impact may cause certain damage to the tank body of the reflux buffer tank 2. Therefore, the reflux buffer tank 2 is set to be detachable, so that the reflux buffer tank 2 can be regularly inspected and maintained in a timely manner.

[0040] As an optional implementation, a flange structure is provided on the reflux buffer tank 2, and the reflux buffer tank 2 is detachably arranged on the main cabin body 1 through the flange structure.

[0041] In this embodiment, a baffle 4 is provided between the reflux buffer tank 2 and the reflux buffer container 3 in the main cabin 1, and the baffle 4 is spaced apart from the bottom of the reflux buffer container 3. Specifically, since a certain amount of purging nitrogen will pass through the reflux pipe, this part of nitrogen mixed with methanol fuel liquid will still have a relatively fast speed when passing through the flow hole 201, and splashing may still occur. Therefore, by providing the baffle 4, it is possible to further avoid splashing of the liquid in the reflux buffer tank 2 when it is discharged from the reflux buffer tank 2, thereby preventing cavitation from entering the inlet of the first switch valve 111 of the supply pipe 11 to affect the normal supply of methanol.

[0042] In this embodiment, an oil level sensor 5 is provided in the reflux buffer container 3. The oil level sensor 5 is provided to detect the oil level deposited at the bottom of the reflux buffer container 3 in real time. Specifically, the methanol fuel supply tank also includes an alarm module. When the oil level continues to accumulate and reaches the target level, the oil level sensor 5 detects the level and controls the alarm module to sound an alarm through the control module, indicating that too much oil has accumulated in the reflux buffer container 3, and reminding the operator to discharge the oil in time.

[0043] Optionally, the alarm module is configured as a buzzer and / or an alarm light. When the alarm module sounds an alarm, the buzzer sounds and the alarm light flashes, so that the alarm information can be perceived from the visual and auditory sensory dimensions, further improving the reliability and effectiveness of the alarm action.

[0044] In this embodiment, the reflux buffer container 3 is connected to a first drain pipe 31, and a fourth switch valve 311 is provided on the first drain pipe 31. When the oil content accumulates continuously and reaches the target liquid level, the operator opens the fourth switch valve 311, so that the oil content at the bottom of the reflux buffer container 3 can be discharged through the first drain pipe 31.

[0045] In this embodiment, the main cabin 1 is connected with a replenishing pipe 12, which is inserted from the outside of the main cabin 1 to the bottom of the main cabin 1, and a fifth switch valve 121 is provided on the replenishing pipe 12. Specifically, when it is necessary to replenish methanol fuel into the main cabin 1, the fifth switch valve 121 can be opened, and the external methanol supply mechanism replenishes methanol fuel into the main cabin 1 through the replenishing pipe 12.

[0046] In this embodiment, a second drain pipe 13 is provided at the bottom of the main cabin 1, and a sixth switch valve 131 is provided on the second drain pipe 13. When the main cabin 1 needs to be repaired, etc., it is necessary to discharge all the methanol fuel in the main cabin 1. At this time, the sixth switch valve 131 can be opened, and all the methanol fuel in the main cabin 1 can be discharged through the second drain pipe 13.

[0047] Specifically, the bottom end surface of the main cabin 1 is tilted downward from the first side to the second side, and the second drainage pipe 13 is located on the second side of the bottom end surface of the main cabin 1. In this way, when discharging methanol fuel, the remaining methanol fuel in the main cabin 1 will gather to the second side of the bottom end surface of the main cabin 1 under the action of gravity, and finally be discharged through the second drainage pipe 13, further ensuring the reliability and effectiveness of the discharge of methanol fuel in the main cabin 1.

[0048] As an optional embodiment, a pressure detection device (not shown) is also provided on the main cabin body 1, and the pressure detection device is used to detect and display the pressure inside the main cabin body 1 in real time, so that the operator can quickly and conveniently obtain the pressure inside the main cabin body 1.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A methanol fuel supply tank, characterized in that: include: A main cabin (1), the main cabin (1) being connected to a supply pipe (11), the supply pipe (11) being connected to a marine methanol supply device, and a first switch valve (111) being provided on the supply pipe (11); A reflux buffer tank (2) is arranged in the main cabin (1), the reflux buffer tank (2) is connected to a reflux pipe, the reflux pipe is connected to the marine methanol supply equipment, and a plurality of flow holes (201) are opened on the reflux buffer tank (2); A reflux buffer container (3) is arranged in the main cabin (1) and below the reflux buffer tank (2), and is used to receive the methanol and oil mixture flowing out of the reflux buffer tank (2). The top of the reflux buffer container (3) has an overflow port (301) connected to the inside of the main cabin (1).

2. The methanol fuel supply tank according to claim 1, characterized in that: The reflux pipe comprises a first reflux pipe (21) and a second reflux pipe (22), and the marine methanol supply equipment comprises a marine methanol supply unit and a marine methanol supply pipe; The first end of the first reflux pipe (21) is connected to the marine methanol supply unit, and the second end of the first reflux pipe (21) is connected to the reflux buffer tank (2); The first end of the second reflux pipe (22) is connected to the marine methanol supply pipe, and the second end of the second reflux pipe (22) is connected to the reflux buffer tank (2).

3. The methanol fuel supply tank according to claim 2, characterized in that: The first return pipe (21) is provided with a second switch valve (211), and the second return pipe (22) is provided with a third switch valve (221).

4. The methanol fuel supply tank according to claim 1, characterized in that: The reflux buffer tank (2) is detachably arranged on the main cabin (1).

5. The methanol fuel supply tank according to claim 1, characterized in that: A baffle (4) is provided in the main cabin (1) between the reflux buffer tank (2) and the reflux buffer container (3), and the baffle (4) is spaced apart from the bottom of the reflux buffer container (3).

6. The methanol fuel supply tank according to claim 1, characterized in that: An oil level sensor (5) is provided in the reflux buffer container (3).

7. The methanol fuel supply tank according to claim 1, characterized in that: The reflux buffer container (3) is connected to a first leakage pipe (31), and a fourth switch valve (311) is provided on the first leakage pipe (31).

8. The methanol fuel supply tank according to claim 1, characterized in that: The main cabin (1) is connected to a replenishing pipe (12), and the replenishing pipe (12) is inserted from the outside of the main cabin (1) to the bottom of the main cabin (1), and a fifth switch valve (121) is provided on the replenishing pipe (12).

9. The methanol fuel supply tank according to claim 1, characterized in that: A second drainage pipe (13) is provided at the bottom of the main cabin (1), and a sixth switch valve (131) is provided on the second drainage pipe (13).

10. The methanol fuel supply tank according to claim 9, characterized in that: The bottom end surface of the main cabin body (1) is tilted downward from the first side to the second side, and the second drain pipe (13) is located on the second side of the bottom end surface of the main cabin body (1).

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