Alcohol fuel system and transport device

Abstract

This invention discloses an alcohol fuel system and transportation device, relating to the field of marine technology. The invention provides an alcohol fuel system comprising an alcohol storage tank, an alcohol venting tank, an alcohol fuel supply unit, and an engine unit. The alcohol storage tank, alcohol fuel supply unit, and engine unit are sequentially connected. The alcohol venting tank is equipped with a recirculation compartment. The inlet of the recirculation compartment is connected to the alcohol fuel supply unit and the engine unit, and the outlet of the recirculation compartment is connected to the alcohol storage tank. The recirculation compartment is used to collect the recirculated liquid from the purging of the alcohol fuel supply unit and the engine unit. The recirculation compartment is equipped with an oil removal device to separate the alcohol liquid from the oil in the recirculated liquid. This eliminates the need for a separate alcohol daily use tank and its associated compartment monitoring system, inerting system, pressure protection device, and other accessories, simplifying the composition of the alcohol fuel system, reducing initial equipment investment and daily maintenance costs, saving ship compartment space, and facilitating the optimization of the overall ship compartment layout.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to an alcohol fuel system and transportation device. Background Technology

[0002] As the global shipping industry becomes increasingly demanding in its requirements for green and low-carbon development, methanol, as a clean alternative fuel, is being used more and more widely in the shipbuilding sector because it can significantly reduce pollutant emissions.

[0003] Existing methanol dual-fuel vessels typically include one or more methanol fuel users, such as methanol-fueled main engines, generator sets, and boilers. To ensure a stable fuel supply to these users, the ship is equipped with several functionally independent compartments, primarily including a methanol storage tank, a methanol day-use tank, and a methanol venting tank. A typical fuel supply process is as follows: a methanol transfer pump transports methanol from the methanol storage tank to the methanol day-use tank, and then, after pressurization and heating by the methanol supply unit, it is delivered to the aforementioned methanol fuel users. During methanol engine operation, a portion of the liquid methanol returns to the methanol day-use tank, which serves as a transfer station in the fuel system and has the function of separating and returning methanol. The methanol venting tank is used to collect waste methanol liquid from the methanol refueling station's collection pan, the methanol supply unit's collection pan, and the venting well.

[0004] The aforementioned traditional design has the following shortcomings: First, the system is complex. As an independent functional compartment, the methanol day use tank must be equipped with a separate compartment monitoring system, including temperature and pressure monitoring, as well as a series of accessories such as nitrogen inerting and pressure protection, resulting in high initial investment and maintenance costs. Second, it occupies a lot of ship space. The independent methanol day use tank and its auxiliary equipment occupy valuable ship compartment space, which is not conducive to the optimization of the overall layout of the ship's compartments. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art, which are that the transportation device is set up with a separate alcohol daily use tank, resulting in a complex system structure, high equipment and maintenance costs, and large space occupation of ship cabins. The present invention provides an alcohol fuel system and transportation device.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This invention provides an alcohol fuel system, which includes an alcohol storage tank, an alcohol release tank, an alcohol fuel supply unit, and an engine assembly.

[0008] The alcohol storage chamber, the alcohol fuel supply unit, and the engine assembly are connected in sequence. The alcohol venting chamber is equipped with a reflux compartment. The inlet of the reflux compartment is connected to the alcohol fuel supply unit and the engine assembly, and the outlet of the reflux compartment is connected to the alcohol storage chamber. The reflux compartment is used to collect the reflux liquid purged from the alcohol fuel supply unit and the engine assembly. The reflux compartment is equipped with an oil removal device for separating the alcohol liquid from the oil in the reflux liquid.

[0009] In this solution, a recirculation compartment is installed in the alcohol venting tank. The inlet of the recirculation compartment connects to the alcohol fuel supply unit and the engine assembly. The recirculated liquid from the alcohol fuel supply unit and the engine assembly can be purged and returned to the recirculation compartment of the alcohol venting tank. The recirculation compartment is equipped with an oil removal device that can separate the alcohol liquid from the engine sealing oil. The outlet of the recirculation compartment connects to the alcohol storage tank. The alcohol liquid separated by the oil removal device can be reintroduced into the alcohol storage tank for use. This integrates the functions of recirculated liquid collection and alcohol-oil separation, which were originally performed by a separate alcohol daily use tank, into the alcohol venting tank. At the same time, the alcohol storage tank also serves as a transfer and storage tank for fuel in the alcohol daily use tank. Since the volume of the ship's alcohol storage tank is generally large enough to fully cover the requirements of the regulations for the volume of the alcohol daily use tank, it is possible to eliminate the need to set up a separate alcohol daily use tank and its supporting compartment monitoring system, inerting system, pressure protection device and other accessories. This greatly simplifies the composition of the alcohol fuel system, reduces the initial investment in equipment and daily maintenance costs, saves ship compartment space, and is conducive to the optimization of the overall layout of the ship's compartments.

[0010] Preferably, the reflux compartment includes a first compartment and a second compartment;

[0011] The oil removal device is connected to the alcohol fuel supply unit and the engine unit. The oil removal device is provided with a flow hole for the alcohol liquid to flow out. The flow hole is connected to the first compartment, which is used to receive the alcohol liquid separated from the flow hole.

[0012] The second compartment is used to store the alcohol liquid that overflows from the first compartment.

[0013] In this solution, the return compartment is divided into a first compartment and a second compartment, and a flow hole is provided in the oil removal device for the alcohol liquid to flow out. Taking advantage of the fact that the density of the alcohol liquid is lower than that of the engine sealing oil, the alcohol and oil in the purging return liquid are naturally separated into layers in the oil removal device. The engine sealing oil remains at the bottom of the oil removal device, and the clean alcohol liquid enters the first compartment through the flow hole. The alcohol liquid in the first compartment then overflows into the second compartment for storage. This achieves automatic separation of alcohol and oil in the return liquid and reliable recovery of clean alcohol. The structure is simple and reliable, requires no additional power, and saves production costs.

[0014] Preferably, the oil removal device is located at the upper end of the first compartment, the first compartment and the second compartment are arranged adjacent to each other in the horizontal direction, the second compartment is connected to the upper space of the first compartment, and the first compartment is equipped with a liquid level switch for detecting the liquid level of alcohol liquid in the first compartment.

[0015] In this design, by placing the oil removal device at the top of the first compartment, the alcohol liquid flowing out of the flow hole can more easily flow into the first compartment by gravity, thus improving separation efficiency. The first and second compartments are horizontally adjacent and connected at the top, allowing the alcohol liquid to overflow into the second compartment by gravity, eliminating the need for additional pumping equipment and resulting in a simpler structure. A level switch detects the alcohol liquid level in the first compartment, providing a signal for system control and maintaining the level within a reasonable range, thereby improving reliability and safety.

[0016] Preferably, the alcohol fuel system further includes an alcohol refueling station and an alcohol transfer pump, wherein the alcohol refueling station is connected to the alcohol storage tank and is used to inject liquid alcohol into the alcohol storage tank;

[0017] The alcohol transfer pump connects the alcohol storage tank and the alcohol fuel supply unit, and the alcohol transfer pump is used to transport liquid alcohol in the alcohol storage tank to the alcohol fuel supply unit.

[0018] In this scheme, an alcohol refueling station is set up, which is connected to the alcohol storage tank. The alcohol refueling station is used to inject liquid alcohol into the alcohol storage tank to realize the refueling of alcohol fuel. An alcohol transfer pump is set up, which is connected to the alcohol storage tank and the alcohol fuel supply unit. The alcohol transfer pump is used to transport the liquid alcohol in the alcohol storage tank to the alcohol fuel supply unit, providing the power for fuel supply, and the structure is simple.

[0019] Preferably, the alcohol fuel supply unit includes a connecting pipeline, an alcohol circulation booster pump, an alcohol fuel heat exchanger, an alcohol fuel filter, and an alcohol fuel flow meter;

[0020] The inlet of the connecting pipeline is connected to the alcohol storage chamber, and the outlet of the connecting pipeline is connected to the alcohol release chamber and the engine unit. The alcohol circulation booster pump, the alcohol fuel heat exchanger, the alcohol fuel filter and the alcohol fuel flow meter are installed on the connecting pipeline. The alcohol fuel heat exchanger is equipped with an ethylene glycol heat exchange system.

[0021] The alcohol fuel supply unit is also equipped with a return pipeline, the two ends of which are connected to the inlet and outlet of the alcohol circulation booster pump, respectively, and the return pipeline is equipped with a flow regulating valve.

[0022] In this design, the inlet of the connecting pipeline connects to the alcohol storage tank, and the outlet connects to the alcohol venting tank and the engine unit. During normal engine operation, alcohol fuel from the storage tank flows into the engine unit via the connecting pipeline. During fuel and alcohol fuel switching or emergency shutdown, the alcohol fuel system performs a purging procedure, purging the alcohol fuel from the engine unit and the alcohol fuel supply unit into the return compartment of the alcohol venting tank. The connecting pipeline is equipped with an alcohol circulation booster pump, an alcohol fuel heat exchanger, an alcohol fuel filter, and an alcohol fuel flow meter. The alcohol liquid is pressurized and temperature-regulated by the alcohol fuel supply unit before being supplied to the engine unit. The alcohol fuel heat exchanger regulates the temperature of the alcohol fuel, the alcohol fuel filter removes impurities from the alcohol liquid, and the alcohol fuel flow meter measures the alcohol consumption per unit time. To prevent alcohol leakage into the ship's central freshwater cooling system, the alcohol fuel heat exchanger is equipped with an ethylene glycol heat exchange system. The heat exchange medium used in the alcohol fuel heat exchanger is a water-ethylene glycol solution, enhancing safety.

[0023] The alcohol fuel supply unit is also equipped with a return pipeline, with its two ends connected to the inlet and outlet of the alcohol circulation booster pump, respectively. It is also equipped with a flow regulating valve, which can dynamically adjust the fuel supply according to the alcohol fuel usage to improve fuel utilization efficiency.

[0024] Preferably, the alcohol fuel system further includes a dual-fuel boiler, which is connected to the alcohol fuel supply unit. There are two alcohol fuel supply units, which are respectively set up for the engine unit and the dual-fuel boiler.

[0025] In this solution, by setting up independent alcohol fuel supply units for the engine set and the dual-fuel boiler, the different needs of different types of alcohol fuel users for fuel supply pressure, temperature and flow can be met, ensuring that each user's equipment operates under its own optimal conditions, and improving the stability and adaptability of the supply.

[0026] Preferably, the alcohol fuel system further includes a fuel valve assembly unit, the inlet of which is connected to the alcohol fuel supply unit, and the outlet of which is connected to the engine assembly.

[0027] In this scheme, the inlet of the fuel valve group unit is connected to the alcohol fuel supply unit, and the outlet is connected to the engine unit. It can distribute and control the alcohol fuel supply to the engine unit, adapt to different working modes of the engine unit, and cooperate in performing the purging and return work of the alcohol fuel supply unit and the engine unit.

[0028] Preferably, the alcohol release chamber further includes a release compartment for collecting waste alcohol liquid, and the outlet of the release compartment is provided with a release pipeline, and the release pipeline is provided with a release transfer pump.

[0029] In this scheme, the alcohol release tank is also equipped with a release compartment for collecting waste alcohol liquid. This waste alcohol liquid may be contaminated and can no longer be used as an alcohol fuel system. The outlet of the release compartment is equipped with a release pipeline, and the release pipeline is equipped with a release transfer pump. When the ship docks at the port, the collected waste alcohol liquid is discharged to the receiving facility on shore for recycling through the release transfer pump and the release pipeline.

[0030] Preferably, the alcohol fuel system further includes an inert gas injection device, a cabin monitoring device, and a cabin pressure protection device, wherein the cabin monitoring device includes a pressure sensor and a temperature sensor;

[0031] Each of the alcohol storage chamber, the reflux compartment, and the venting compartment is equipped with an inert gas injection device, a chamber monitoring device, and a chamber pressure protection device.

[0032] In this solution, by installing an inert gas injection device, a compartment monitoring device, and a compartment pressure protection device in each of the alcohol storage compartment, reflux compartment, and venting compartment, each compartment can independently maintain an inert environment and achieve independent monitoring of parameters such as pressure and temperature, thereby improving the overall safety of the alcohol fuel system.

[0033] The present invention also provides a transportation device comprising the above-described alcohol fuel system.

[0034] The positive and progressive effects of this invention are as follows:

[0035] This invention provides an alcohol fuel system comprising an alcohol storage chamber, an alcohol venting chamber, an alcohol fuel supply unit, and an engine assembly. By incorporating a recirculation compartment within the alcohol venting chamber, the inlet of which connects to the alcohol fuel supply unit and the engine assembly, allowing recirculated liquid from these components to be purged back into the recirculation compartment. This recirculation compartment is equipped with an oil removal device capable of separating the alcohol liquid from the engine sealing oil. The outlet of the recirculation compartment connects to the alcohol storage chamber, allowing the separated alcohol liquid to be reintroduced into the storage chamber for reuse. This integrates the recirculated liquid collection and alcohol-oil separation functions, originally handled by a separate alcohol daily use chamber, into the alcohol venting chamber. Meanwhile, the alcohol storage tank also serves as a transfer and storage tank for alcohol daily use. Since the volume of the ship's alcohol storage tank is generally large enough to fully cover the requirements of the regulations for the volume of the alcohol daily use tank, it is possible to eliminate the need to set up a separate alcohol daily use tank and a series of accessories such as the compartment monitoring system, inerting system and pressure protection device. This greatly simplifies the composition of the alcohol fuel system, reduces the initial investment in equipment and daily maintenance costs, saves ship compartment space, and is conducive to the optimization of the overall layout of the ship compartment. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an alcohol fuel system according to an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the structure of an alcohol fuel supply unit according to an embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the structure of an alcohol release chamber according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] Alcohol fuel system 10

[0041] Control System 11

[0042] Alcohol storage tank 100

[0043] 200 alcohol release chamber

[0044] Return flow compartment 210

[0045] First compartment 211

[0046] Second compartment 212

[0047] Supply unit return inlet 213

[0048] Engine return inlet 214

[0049] Storage compartment exit 215

[0050] Level switch 216

[0051] partition 217

[0052] Oil removal device 220

[0053] Flow hole 221

[0054] 230 venting compartments

[0055] 231 relief pipeline

[0056] 232 discharge transfer pump

[0057] Alcohol fuel supply unit 300

[0058] Connecting pipe 310

[0059] 320 alcohol circulation booster pump

[0060] 330 alcohol fuel heat exchanger

[0061] Ethylene glycol heat exchange system 331

[0062] Alcohol fuel filter 340

[0063] 350 alcohol fuel flow meter

[0064] 360° return line

[0065] Flow regulating valve 361

[0066] Engine set 400

[0067] 500 alcohol refueling station

[0068] Alcohol transfer pump 600

[0069] Dual-fuel boiler 700

[0070] Fuel valve assembly unit 800

[0071] Inert gas injection device 910

[0072] Cabin monitoring device 920

[0073] Pressure sensor 921

[0074] Temperature sensor 922

[0075] Pressure protection device 930 Detailed Implementation

[0076] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the following embodiments.

[0077] This embodiment provides a transportation device, which is a dual-fuel vessel, including an alcohol fuel system 10. In this embodiment, the alcohol fuel is methanol. In other embodiments, ethanol or other varieties deemed suitable by those skilled in the art may also be used as the alcohol fuel.

[0078] like Figures 1-3 As shown, the alcohol fuel system 10 includes an alcohol storage tank 100, an alcohol release tank 200, an alcohol fuel supply unit 300, and an engine unit 400.

[0079] The alcohol storage tank 100, alcohol fuel supply unit 300 and engine unit 400 are connected in sequence. The alcohol venting tank 200 is provided with a reflux compartment 210. The inlet of the reflux compartment 210 is connected to the alcohol fuel supply unit 300 and engine unit 400, and the outlet of the reflux compartment 210 is connected to the alcohol storage tank 100. The reflux compartment 210 is used to collect the reflux liquid purged and returned by the alcohol fuel supply unit 300 and engine unit 400. The reflux compartment 210 is provided with an oil removal device 220, which is used to separate the alcohol liquid from the oil in the reflux liquid.

[0080] A reflux compartment 210 is provided in the alcohol release chamber 200. The inlet of the reflux compartment 210 is connected to the alcohol fuel supply unit 300 and the engine assembly 400. The reflux compartment 210 is provided with a supply unit reflux inlet 213 connected to the alcohol fuel supply unit 300 and an engine reflux inlet 214 connected to the engine assembly 400. The reflux liquid in the alcohol fuel supply unit 300 and the engine assembly 400 can be purged back to the reflux compartment 210 of the alcohol release chamber 200. The reflux compartment 210 is provided with an oil removal device 220 that can separate the alcohol liquid from the engine sealing oil. The outlet of the reflux compartment 210 is connected to the alcohol storage chamber 100, and the reflux compartment 210 is provided with a storage chamber outlet 215 connected to the alcohol storage chamber 100.

[0081] The alcohol liquid separated by the oil removal device 220 can be reintroduced into the alcohol storage tank 100 for use, integrating the functions of reflux liquid collection and alcohol-oil separation, originally performed by a separate alcohol daily use tank, into the alcohol venting tank 200. Simultaneously, the alcohol storage tank 100 also functions as a transfer and storage tank for fuel in the alcohol daily use tank. Since the volume of the ship's alcohol storage tank 100 is generally large enough to fully cover the regulatory requirements for the capacity of the alcohol daily use tank, it eliminates the need for a separate alcohol daily use tank and its associated compartment monitoring system, inerting system, pressure protection device, and other accessories. This significantly simplifies the composition of the alcohol fuel system 10, reduces initial equipment investment and daily maintenance costs, saves ship compartment space, and facilitates optimization of the overall ship compartment layout.

[0082] The return compartment 210 includes a first compartment 211 and a second compartment 212. The oil removal device 220 connects the alcohol fuel supply unit 300 and the engine assembly 400. The oil removal device 220 is provided with a flow hole 221 for alcohol liquid to flow out. The flow hole 221 connects to the first compartment 211, which receives the alcohol liquid separated from the flow hole 221. The second compartment 212 stores the alcohol liquid overflowing from the first compartment 211.

[0083] By dividing the return compartment 210 into a first compartment 211 and a second compartment 212, and setting a flow hole 221 for alcohol liquid to flow out in the oil removal device 220, the alcohol liquid is naturally separated from the oil in the return liquid by taking advantage of the fact that the density of the alcohol liquid is lower than that of the engine sealing oil. The engine sealing oil remains at the bottom of the oil removal device 220, and the clean alcohol liquid enters the first compartment 211 through the flow hole 221. The alcohol liquid in the first compartment 211 then overflows into the second compartment 212 for storage. This achieves automatic separation of alcohol and oil in the return liquid and reliable recovery of clean alcohol. The structure is simple and reliable, requires no additional power, and saves production costs.

[0084] In this embodiment, the flow hole 221 is located on the side wall of the oil removal device 220. In other embodiments, the flow hole 221 is located on the top of the oil removal device 220, or it can be located in other positions that are deemed suitable by those skilled in the art.

[0085] An oil removal device 220 is located at the upper end of the first compartment 211. The first compartment 211 and the second compartment 212 are arranged adjacent to each other in the horizontal direction, and the upper space of the second compartment 212 is connected to the upper space of the first compartment 211. The first compartment 211 is equipped with a level switch 216, which is used to detect the liquid level of the alcohol liquid in the first compartment 211. By placing the oil removal device 220 at the upper end of the first compartment 211, it is easier for the alcohol liquid flowing out of the flow hole 221 to flow into the first compartment 211 by its own gravity, thus improving the separation efficiency. The first compartment 211 and the second compartment 212 are adjacent in the horizontal direction and connected in the upper space. The alcohol liquid can flow into the second compartment 212 by gravity through overflow, eliminating the need for additional pumping equipment and making the structure simpler. The level switch 216 can detect the liquid level of the alcohol liquid in the first compartment 211, providing a signal for system control, controlling the liquid level within a reasonable range, and improving reliability and safety.

[0086] like Figure 3 As shown, in this embodiment, a partition 217 is provided between the first compartment 211 and the second compartment 212. The upper end of the partition 217 has an opening connecting the first compartment 211 and the second compartment 212. When the volume of alcohol liquid accumulates to a certain amount, it can overflow into the second compartment 212 through the opening at the upper end of the partition 217. In other embodiments, other specific structures of the first compartment 211 and the second compartment 212 that are deemed suitable by those skilled in the art can also be adopted.

[0087] The alcohol fuel system 10 also includes an alcohol refueling station 500 and an alcohol transfer pump 600. The alcohol refueling station 500 is connected to the alcohol storage tank 100 and is used to inject liquid alcohol into the alcohol storage tank 100. The alcohol transfer pump 600 is connected to the alcohol storage tank 100 and the alcohol fuel supply unit 300 and is used to transport the liquid alcohol in the alcohol storage tank 100 to the alcohol fuel supply unit 300. By setting up the alcohol refueling station 500, which is connected to the alcohol storage tank 100, and is used to inject liquid alcohol into the alcohol storage tank 100, alcohol fuel refueling is achieved. By setting up the alcohol transfer pump 600, which is connected to the alcohol storage tank 100 and the alcohol fuel supply unit 300, and is used to transport the liquid alcohol in the alcohol storage tank 100 to the alcohol fuel supply unit 300, the system provides the power for fuel supply and has a simple structure. The 600 alcohol transport pump can come in various forms. Typical pump types include: 1. A deep well pump with the pump body installed inside the tank and the pump motor (electric or hydraulically driven) installed on the top of the tank; 2. A pump body and motor installed outside the tank, located near or below the bottom of the tank.

[0088] The alcohol fuel supply unit 300 includes a connecting pipe 310, an alcohol circulation booster pump 320, an alcohol fuel heat exchanger 330, an alcohol fuel filter 340, and an alcohol fuel flow meter 350. The inlet of the connecting pipe 310 is connected to the alcohol storage tank 100, and the outlet of the connecting pipe 310 is connected to the alcohol venting tank 200 and the engine unit 400. The alcohol circulation booster pump 320, the alcohol fuel heat exchanger 330, the alcohol fuel filter 340, and the alcohol fuel flow meter 350 are installed on the connecting pipe 310. The alcohol fuel heat exchanger 330 is equipped with an ethylene glycol heat exchange system 331.

[0089] The inlet of connecting pipe 310 is connected to the alcohol storage tank 100, and the outlet of connecting pipe 310 is connected to the alcohol venting tank 200 and the engine set 400. When the engine set 400 is running normally, the alcohol fuel in the alcohol storage tank 100 flows into the engine set 400 through connecting pipe 310. When the engine set 400 switches between fuel oil and alcohol fuel or during an emergency shutdown, the alcohol fuel system 10 performs a purging procedure to purge the alcohol fuel in the engine set 400 and the alcohol fuel supply unit 300 into the return compartment 210 of the alcohol venting tank 200. Connecting pipe 310 is equipped with an alcohol circulation booster pump 320, an alcohol fuel heat exchanger 330, an alcohol fuel filter 340, and an alcohol fuel flow meter 350. The alcohol liquid is pressurized and conditioned by the alcohol fuel supply unit 300 before being supplied to the engine set 400. The alcohol fuel heat exchanger 330 is used to regulate the temperature of the alcohol fuel, the alcohol fuel filter 340 is used to remove impurities from the alcohol liquid, and the alcohol fuel flow meter 350 is used to measure the alcohol consumption per unit time. To prevent alcohol from leaking into the ship's central freshwater cooling system, the alcohol fuel heat exchanger 330 is equipped with an ethylene glycol heat exchange system 331. The heat exchange medium used in the alcohol fuel heat exchanger 330 is a water-ethylene glycol solution, which improves safety.

[0090] The alcohol fuel supply unit 300 is also equipped with a return pipeline 360, with its two ends connected to the inlet and outlet of the alcohol circulation booster pump 320, respectively. The return pipeline 360 ​​is also equipped with a flow regulating valve 361. By providing a return pipeline 360 ​​in the alcohol fuel supply unit 300, with its two ends connected to the inlet and outlet of the alcohol circulation booster pump 320, and equipped with a flow regulating valve 361, the fuel supply can be dynamically adjusted according to the alcohol fuel usage, thereby improving fuel utilization efficiency.

[0091] The alcohol fuel system 10 also includes a dual-fuel boiler 700, which is connected to two alcohol fuel supply units 300, one for the engine set 400 and the other for the dual-fuel boiler 700. By providing independent alcohol fuel supply units 300 for the engine set 400 and the dual-fuel boiler 700 respectively, the differentiated requirements of different types of alcohol fuel users for fuel supply pressure, temperature, and flow rate can be met, ensuring that each user's equipment operates under its optimal conditions, thus improving the stability and adaptability of the supply.

[0092] The alcohol fuel system 10 also includes a fuel valve assembly unit 800. The inlet of the fuel valve assembly unit 800 is connected to the alcohol fuel supply unit 300, and the outlet of the fuel valve assembly unit 800 is connected to the engine unit 400. The fuel valve assembly unit 800 can distribute and control the alcohol fuel supply to the engine unit 400, adapt to different operating modes of the engine unit 400, and cooperate in performing the purging and recirculation operations of the alcohol fuel supply unit 300 and the engine unit 400.

[0093] The alcohol release tank 200 also includes a release compartment 230 for collecting waste alcohol liquid. The outlet of the release compartment 230 is equipped with a release pipeline 231, and a release transfer pump 232 is installed on the release pipeline 231. The alcohol release tank 200 is also provided with a dedicated release compartment 230 for collecting waste alcohol liquid, which may be contaminated and can no longer be used as alcohol fuel system 10. The outlet of the release compartment 230 is equipped with a release pipeline 231, and a release transfer pump 232 is installed on the release pipeline 231. When the ship docks, the collected waste alcohol liquid is discharged to the receiving facility on shore for recycling via the release transfer pump 232 and the release pipeline 231.

[0094] The alcohol fuel system 10 also includes an inert gas injection device 910, a compartment monitoring device 920, and a compartment pressure protection device 930. The compartment monitoring device 920 includes a pressure sensor 921 and a temperature sensor 922. Each of the alcohol storage compartment 100, the reflux compartment 210, and the venting compartment 230 is equipped with an inert gas injection device 910, a compartment monitoring device 920, and a compartment pressure protection device 930. By providing each of these devices in the alcohol storage compartment 100, the reflux compartment 210, and the venting compartment 230 with its own inert gas injection device 910, compartment monitoring device 920, and compartment pressure protection device 930, each compartment can independently maintain an inertized environment and independently monitor parameters such as pressure and temperature, thus improving the overall safety of the alcohol fuel system 10.

[0095] The alcohol fuel system 10 is also equipped with a control system 11, which is responsible for receiving signals from alcohol users, monitoring signals from each compartment, and sensor signals from each pipeline and equipment in the system, and simultaneously performing automatic operation and signal feedback.

[0096] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship of the device or element during normal use. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention in this respect.

[0097] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An alcohol fuel system, characterized in that, The alcohol fuel system includes an alcohol storage tank, an alcohol release tank, an alcohol fuel supply unit, and an engine assembly. The alcohol storage chamber, the alcohol fuel supply unit, and the engine assembly are connected in sequence. The alcohol venting chamber is equipped with a reflux compartment. The inlet of the reflux compartment is connected to the alcohol fuel supply unit and the engine assembly, and the outlet of the reflux compartment is connected to the alcohol storage chamber. The reflux compartment is used to collect the reflux liquid purged from the alcohol fuel supply unit and the engine assembly. The reflux compartment is equipped with an oil removal device for separating the alcohol liquid from the oil in the reflux liquid.

2. The alcohol fuel system as described in claim 1, characterized in that, The reflux compartment includes a first compartment and a second compartment; The oil removal device is connected to the alcohol fuel supply unit and the engine unit. The oil removal device is provided with a flow hole for the alcohol liquid to flow out. The flow hole is connected to the first compartment, which is used to receive the alcohol liquid separated from the flow hole. The second compartment is used to store the alcohol liquid that overflows from the first compartment.

3. The alcohol fuel system as described in claim 2, characterized in that, The oil removal device is located at the upper end of the first compartment. The first compartment and the second compartment are arranged adjacent to each other in the horizontal direction. The upper space of the second compartment is connected to the upper space of the first compartment. The first compartment is equipped with a liquid level switch, which is used to detect the liquid level of the alcohol liquid in the first compartment.

4. The alcohol fuel system as described in claim 1, characterized in that, The alcohol fuel system also includes an alcohol refueling station and an alcohol transfer pump. The alcohol refueling station is connected to the alcohol storage tank and is used to inject liquid alcohol into the alcohol storage tank. The alcohol transfer pump connects the alcohol storage tank and the alcohol fuel supply unit, and the alcohol transfer pump is used to transport liquid alcohol in the alcohol storage tank to the alcohol fuel supply unit.

5. The alcohol fuel system as described in claim 1, characterized in that, The alcohol fuel supply unit includes connecting pipelines, an alcohol circulation booster pump, an alcohol fuel heat exchanger, an alcohol fuel filter, and an alcohol fuel flow meter; The inlet of the connecting pipeline is connected to the alcohol storage chamber, and the outlet of the connecting pipeline is connected to the alcohol release chamber and the engine unit. The alcohol circulation booster pump, the alcohol fuel heat exchanger, the alcohol fuel filter and the alcohol fuel flow meter are installed on the connecting pipeline. The alcohol fuel heat exchanger is equipped with an ethylene glycol heat exchange system. The alcohol fuel supply unit is also equipped with a return pipeline, the two ends of which are connected to the inlet and outlet of the alcohol circulation booster pump, respectively, and the return pipeline is equipped with a flow regulating valve.

6. The alcohol fuel system as described in claim 5, characterized in that, The alcohol fuel system also includes a dual-fuel boiler, which is connected to the alcohol fuel supply unit. There are two alcohol fuel supply units, which are respectively set up for the engine unit and the dual-fuel boiler.

7. The alcohol fuel system as claimed in claim 1, characterized in that, The alcohol fuel system also includes a fuel valve assembly unit, the inlet of which is connected to the alcohol fuel supply unit, and the outlet of which is connected to the engine assembly.

8. The alcohol fuel system as described in claim 1, characterized in that, The alcohol release chamber also includes a release compartment for collecting waste alcohol liquid. The outlet of the release compartment is equipped with a release pipeline, and a release transfer pump is installed on the release pipeline.

9. The alcohol fuel system as described in claim 8, characterized in that, The alcohol fuel system also includes an inert gas injection device, a cabin monitoring device, and a cabin pressure protection device. The cabin monitoring device includes a pressure sensor and a temperature sensor. Each of the alcohol storage chamber, the reflux compartment, and the venting compartment is equipped with an inert gas injection device, a chamber monitoring device, and a chamber pressure protection device.

10. A transport device, characterized in that, The transport device includes an alcohol fuel system as described in any one of claims 1-9.

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