Intelligent supply monitoring system for marine methanol fuel

Abstract

The utility model discloses an intelligent supply monitoring system for marine methanol fuel, which comprises a filling unit, a storage unit, a supply unit, a heat exchange unit, an adjusting unit and a main machine which are sequentially communicated through a pipeline, the filling unit is further communicated with an inerting unit, and the storage unit is further communicated with a recycling unit. And monitoring units are arranged on the filling unit, the storage unit, the heat exchange unit, the adjusting unit, the recycling unit and the pipeline. According to the methanol fuel supply system, the filling unit, the storage unit, the supply unit, the heat exchange unit, the adjusting unit, the inerting unit, the recovery unit and the monitoring unit are matched for use, so that efficient, safe and stable supply of methanol fuel is realized; the monitoring unit monitors the whole system, so that the stability and the safety of the system are improved; the recovery unit is used for recovering methanol fuel discharged by the safety valve and leaked methanol fuel, so that waste of the methanol fuel is avoided, the cost is reduced, and the danger is reduced; belongs to the technical field of marine fuel supply systems.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of marine fuel supply system, more specifically, it relates to an intelligent supply monitoring system for marine methanol fuel. BACKGROUND

[0002] With the enhancement of global environmental protection consciousness and the promotion of green transformation of shipping industry, it has become an industry consensus to find low-carbon and environmentally friendly ship fuel. As a green fuel that can achieve carbon neutralization, methanol has gradually become one of the ideal fuels for realizing the low-carbon goal of ship power due to its good economy, safety, availability and other characteristics.

[0003] Although methanol fuel has many advantages on ships, how to safely, efficiently and stably supply methanol fuel to the gas engine of the ship is still a research and development difficulty at present. During the supply process of methanol fuel, the temperature, pressure and other key parameters of the supply system need to be monitored at all times, and a series of measures need to be taken to ensure a stable supply environment. In addition, methanol is toxic and can cause harm to human life and marine life if leaked, and cannot be recovered after leakage, which will cause extremely difficult water pollution accidents, so the leakage process of methanol fuel also needs to be monitored at all times, and handled immediately after leakage to improve the safety of the supply process. Based on the above situation, the present application designs an intelligent supply monitoring system for marine methanol fuel. SUMMARY

[0004] The purpose of the present application is to provide an intelligent supply monitoring system for marine methanol fuel, aiming to solve the technical problems of the need to monitor the temperature, pressure and other key parameters of the methanol fuel supply system at all times and the need to monitor the leakage process of the methanol fuel.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: an intelligent supply monitoring system for marine methanol fuel is provided, which comprises a filling unit, a storage unit, a supply unit, a heat exchange unit, an adjusting unit and a host engine connected in sequence through a pipeline, the filling unit is further connected with an inerting unit, the storage unit is further connected with a recovery unit, and the filling unit, the storage unit, the heat exchange unit, the adjusting unit, the recovery unit and the pipeline are provided with a monitoring unit.

[0006] In one embodiment, the storage unit is provided with a fuel storage tank, the supply unit is provided with a supply pump, the heat exchange unit is provided with a heat exchange tank, the adjusting unit is provided with a buffer tank, and the fuel storage tank, the supply pump, the heat exchange tank, the buffer tank and the host engine are connected in sequence through a pipeline.

[0007] In one embodiment, the fuel tank is provided with an outlet valve, which is connected to the supply pump; the fuel tank is also provided with a gas supply valve, which is connected to the heat exchange tank.

[0008] In one embodiment, the heat exchange unit is also provided with a water glycol circulation system and a heat exchanger system, the outlet end of the heat exchange tank is connected to the inlet end of the water glycol circulation system, the outlet end of the water glycol circulation system is connected to the inlet end of the heat exchanger system, and the outlet end of the heat exchanger system is connected to the heat exchange tank.

[0009] In one embodiment, the filling unit is provided with an external tank, which is provided with a filling valve, and the filling valve is connected to the fuel tank through a pipeline.

[0010] In one embodiment, the inerting unit is provided with an inert gas tank, which is provided with an inlet valve, and the inlet valve is connected to the pipeline between the external tank and the fuel tank.

[0011] In one embodiment, the recovery unit is provided with an absorption tank, the fuel tank is provided with a first safety valve, and the buffer tank is provided with a second safety valve, both of which are connected to the absorption tank through a pipeline.

[0012] In one embodiment, the recovery unit is also provided with a spray system, which is provided with a spray head arranged above the pipeline, and a collection box is arranged below the spray head and the pipeline; the absorption tank is provided with a third safety valve, which is connected to the collection box through a pipeline.

[0013] In one embodiment, the monitoring unit is provided with a plurality of pressure sensors, temperature sensors and liquid level sensors, the external tank is provided with a filling pressure sensor; the fuel tank is provided with a tank pressure sensor, a tank temperature sensor and a tank liquid level sensor; the heat exchange tank is provided with a heat exchange tank pressure sensor and a heat exchange tank temperature sensor; the buffer tank is provided with a buffer tank pressure sensor, a buffer tank temperature sensor and a buffer tank liquid level sensor; the absorption tank is provided with an absorption tank pressure sensor, an absorption tank temperature sensor and an absorption tank liquid level sensor; the collection box is provided with a spray liquid level sensor; and the pipeline is provided with a plurality of pipeline pressure sensors and pipeline temperature sensors.

[0014] In one embodiment, the monitoring unit is also provided with a plurality of fuel leakage sensors and vibration sensors, the fuel leakage sensors are arranged on the pipeline, and the vibration sensors are arranged on the fuel tank, the heat exchange tank, the buffer tank and the absorption tank.

[0015] The utility model provides a kind of intelligent supply monitoring system of marine methanol fuel, and compared with prior art, its beneficial effect lies in: by setting filling unit, storage unit, supply unit, heat exchange unit, adjusting unit, inert unit, recovery unit, monitoring unit cooperation, nitrogen inertization is carried out to whole system by inert unit, security is improved;Adjusting unit adjusts the pressure of whole system, improves the stability and security of system;Monitoring unit monitors the temperature, pressure, liquid level, methanol leakage, vibration of whole system, also improves the stability and security of system;Recovery unit recycles methanol fuel discharged by safety valve and leaked methanol fuel, avoids the waste of methanol fuel, reduces cost, and reduces danger;The above-mentioned unit cooperation, realizes the efficient, safe, stable supply of methanol fuel.The utility model structure is simple, control is simple, and stability is high, safety is high, and practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The structure diagram of the intelligent supply monitoring system of marine methanol fuel provided by an embodiment of the present application Figure 1 ;

[0018] Figure 2 For Figure 1 The structure diagram of the intelligent supply monitoring system of marine methanol fuel provided by an embodiment of the present application Figure 2 ;

[0019] Figure 3 For Figure 1 The enlarged structure diagram of filling unit and inert unit of the intelligent supply monitoring system of marine methanol fuel

[0020] Figure 4 For Figure 1 The enlarged structure diagram of heat exchange unit of the intelligent supply monitoring system of marine methanol fuel

[0021] Figure 5 For Figure 1 The enlarged structure diagram of adjusting unit of the intelligent supply monitoring system of marine methanol fuel

[0022] Figure 6 For Figure 1 The enlarged structure diagram of recovery unit of the intelligent supply monitoring system of marine methanol fuel Figure 1;

[0023] Figure 7 For Figure 1 Enlarged structure of the recovery unit of the intelligent supply monitoring system of the marine methanol fuel as shown in the figure Figure 2 .

[0024] Explanation of symbol marks in the figure:

[0025] 1, filling unit; 101, external storage tank; 102, filling valve;

[0026] 2, storage unit; 201, fuel storage tank; 202, outlet valve; 203, gas supply valve; 204, first safety valve;

[0027] 3, supply unit; 301, supply pump;

[0028] 4, heat exchange unit; 401, heat exchange tank; 402, water glycol circulation system; 4021, circulation pump; 4022, expansion water tank; 403, heat exchanger system; 4031, heat exchanger;

[0029] 5, regulating unit; 501, buffer tank; 502, second safety valve;

[0030] 6, inerting unit; 601, inert gas storage tank; 602, inlet valve;

[0031] 7, recovery unit; 701, spraying system; 7011, spray head; 7012, collection tank; 702, drip tray; 703, absorption tank; 7031, third safety valve;

[0032] 8, monitoring unit; 801, filling pressure sensor; 802, storage tank pressure sensor; 803, storage tank temperature sensor; 804, storage tank liquid level sensor; 805, pipeline pressure sensor; 806, pipeline temperature sensor; 807, heat exchange tank pressure sensor; 808, heat exchange tank temperature sensor; 809, buffer tank pressure sensor; 810, buffer tank temperature sensor; 811, buffer tank liquid level sensor; 812, absorption tank pressure sensor; 813, absorption tank temperature sensor; 814, absorption tank liquid level sensor; 815, spraying liquid level sensor;

[0033] 9, main engine;

[0034] 10, pipeline; 1001, fourth safety valve. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] Please refer to Figure 1 The structure of an intelligent supply monitoring system for a marine methanol fuel according to an embodiment of the present application is shown in the figure Figure 1 For the convenience of description, only parts related to the present embodiment are shown, and the details are as follows:

[0039] In one embodiment, an intelligent supply monitoring system for a marine methanol fuel includes a filling unit 1, a storage unit 2, a supply unit 3, a heat exchange unit 4, an adjusting unit 5 and a main engine 9 connected in sequence through a pipeline 10. The filling unit 1 is also connected to an inerting unit 6, and the storage unit 2 is also connected to a recovery unit 7. The filling unit 1, the storage unit 2, the heat exchange unit 4, the adjusting unit 5, the recovery unit 7 and the pipeline 10 are provided with a monitoring unit 8. The filling unit 1 is used to fill methanol fuel into the storage unit 2, the methanol fuel is stored in the storage unit 2, the supply unit 3 is used to supply the methanol fuel in the storage unit 2 to the main engine 9 on the ship, the heat exchange unit 4 is used to heat exchange the methanol fuel during the supply process, the adjusting unit 5 is used to adjust the pressure of the methanol fuel during the supply process, the monitoring unit 8 is used to monitor the temperature, pressure, liquid level, methanol leakage and vibration during the supply process, the recovery unit 7 is used to recover the discharged methanol fuel and the leaked methanol fuel during the supply process, and the inerting unit 6 is used to inert the entire supply system with nitrogen.

[0040] The filling unit 1, the storage unit 2, the supply unit 3, the heat exchange unit 4, the adjusting unit 5, the inerting unit 6, the recovery unit 7 and the monitoring unit 8 are used in cooperation, the inerting unit 6 inerting the whole system with nitrogen, improving the safety; the adjusting unit 5 adjusting the pressure of the whole system, improving the stability and safety of the system; the monitoring unit 8 monitoring the temperature, pressure, liquid level, methanol leakage and vibration of the whole system, also improving the stability and safety of the system; the recovery unit 7 recovering the methanol fuel discharged by the safety valve and the leaked methanol fuel, avoiding the waste of the methanol fuel, reducing the cost and the danger; the above units are used in cooperation, realizing the efficient, safe and stable supply of the methanol fuel.

[0041] Specifically, please refer to Figure 2 and Figure 3 The filling unit 1 is provided with an external storage tank 101, the external storage tank 101 is provided with a filling valve 102, the filling valve 102 is connected with the fuel storage tank 201 through the pipeline 10. The methanol fuel in the external storage tank 101 is filled into the fuel storage tank 201 through the filling valve 102.

[0042] Please refer to Figure 2 and Figure 3 The storage unit 2 is provided with the fuel storage tank 201, the supply unit 3 is provided with the supply pump 301, the heat exchange unit 4 is provided with the heat exchange tank 401, the adjusting unit 5 is provided with the buffer tank 501, the fuel storage tank 201, the supply pump 301, the heat exchange tank 401, the buffer tank 501 and the main engine 9 are connected in sequence through the pipeline 10.

[0043] In the embodiment, the fuel storage tank 201 and the supply pump 301 are provided with two, the main engine 9 is also provided with two, the two fuel storage tanks 201 supply the methanol fuel to the two main engines 9 respectively. The two fuel storage tanks 201 have the same structure, the two supply pumps 301 have the same structure.

[0044] Please refer to Figure 2 and Figure 3The outlet valve 202 is connected with the supply pump 301. The fuel tank 201 is further provided with a gas supply valve 203, which is connected with the heat exchange tank 401. The methanol fuel includes direct supply and pump supply. When the pressure in the fuel tank 201 is sufficient, the gas supply valve 203 is opened, and the outlet valve 202 is closed. The pressure in the fuel tank 201 supplies the methanol fuel into the heat exchange tank 401 through the gas supply valve 203, which is direct supply. When the pressure in the fuel tank 201 is insufficient, the gas supply valve 203 is closed, and the outlet valve 202 and the supply pump 301 are opened. The supply pump 301 supplies the methanol fuel into the heat exchange tank 401, which is pump supply. In actual operation, the gas supply mode can be automatically switched according to the pressure in the fuel tank 201. When the direct supply mode is adopted, the methanol vapor in the fuel tank 201 can be consumed, the pressure in the fuel tank 201 can be reduced, the pressure is prevented from being too high, the methanol vapor can be fully utilized, the utilization rate of the methanol vapor is improved, and the methanol vapor is prevented from being discharged into the atmosphere to cause environmental pollution.

[0045] Please refer to Figure 2 and Figure 4 The heat exchange unit 4 is provided with a water-glycol circulation system 402 and a heat exchanger system 403. The outlet end of the heat exchange tank 401 is connected with the inlet end of the water-glycol circulation system 402. The outlet end of the water-glycol circulation system 402 is connected with the inlet end of the heat exchanger system 403. The outlet end of the heat exchanger system 403 is connected with the heat exchange tank 401. The heat exchange of the methanol fuel is completed through the heat exchange unit 4.

[0046] In the embodiment, the water-glycol circulation system 402 includes a water-glycol heat exchanger, an expansion water tank 4022 and two circulation pumps 4021. The heat exchanger system 403 includes two heat exchangers 4031. The methanol fuel is subjected to double heat exchange through the water-glycol circulation system 402 and the heat exchanger system 403, and the heat exchange process is efficiently completed.

[0047] Please refer to Figure 2 and Figure 5 The methanol fuel subjected to the heat exchange through the heat exchange unit 4 enters into the buffer tank 501 through the pipeline 10, and is transported into the main engine 9 after the pressure is adjusted.

[0048] Please refer to Figure 2 and Figures 5-6 The recovery unit 7 is provided with an absorption tank 703. The fuel tank 201 is provided with a first safety valve 204. The buffer tank 501 is provided with a second safety valve 502. The first safety valve 204 and the second safety valve 502 are connected with the absorption tank 703 through the pipeline 10. The absorption tank 703 is provided with an absorption medium (including water and the like). The methanol vapor discharged from the first safety valve 204 and the second safety valve 502 is recovered by the absorption medium in the absorption tank 703, so that the waste of the methanol fuel is avoided.

[0049] Please refer to Figure 2 and Figure 7 The recovery unit 7 is also provided with a spraying system 701, which is provided with a spraying head 7011 arranged above the pipeline 10. The spraying head 7011 and the lower part of the pipeline 10 are provided with a collecting tank 7012. When the methanol fuel leaks, the spraying head 7011 is opened to spray the absorbing medium to recover the leaked methanol fuel, which falls into the collecting tank 7012, thereby reducing the danger caused by the leakage of the methanol fuel and avoiding the waste of the methanol fuel.

[0050] Please refer to Figure 2 and Figures 5-7 The recovery unit 7 is also provided with a drip tray 702 arranged below the whole supply system. The drip tray 702 and the collecting tank 7012 are used in cooperation to recover the leaked methanol fuel.

[0051] Please refer to Figures 6-7 The absorbing tank 703 is provided with a third safety valve 7031 connected to the collecting tank 7012 through the pipeline 10. The methanol fuel not recovered by the absorbing medium in the absorbing tank 703 enters the collecting tank 7012 through the third safety valve 7031 to be recovered again, thereby avoiding the waste of the methanol fuel.

[0052] Please refer to Figure 2 The pipeline 10 between the fuel storage tank 201 and the heat exchange tank 401 is provided with a plurality of fourth safety valves 1001 connected to the heat exchange tank 401 through the pipeline 10. The fourth safety valves 1001 can not only release the methanol vapor to adjust the pressure but also avoid the waste of the methanol fuel.

[0053] Please refer to Figures 2-7The monitoring unit 8 is provided with a plurality of pressure sensors, temperature sensors and liquid level sensors, the external storage tank 101 is provided with a filling pressure sensor 801; the fuel storage tank 201 is provided with a storage tank pressure sensor 802, a storage tank temperature sensor 803 and a storage tank liquid level sensor 804; the heat exchange tank 401 is provided with a heat exchange tank pressure sensor 807 and a heat exchange tank temperature sensor 808; the buffer tank 501 is provided with a buffer tank pressure sensor 809, a buffer tank temperature sensor 810 and a buffer tank liquid level sensor 811; the absorption tank 703 is provided with an absorption tank pressure sensor 812, an absorption tank temperature sensor 813 and an absorption tank liquid level sensor 814; the collection box 7012 is provided with a spraying liquid level sensor 815; and the pipeline 10 is provided with a plurality of pipeline pressure sensors 805 and pipeline temperature sensors 806. The pressure sensors and the temperature sensors are respectively used for detecting the pressure and the temperature of the supply system, and the liquid level sensors are used for detecting the height of the liquid level. The pressure sensors, the temperature sensors and the liquid level sensors are electrically connected with the control unit, the control unit feeds back the detected data to the control unit, and controls the operation or shutdown of the entire supply system according to the feedback result, thereby improving the safety of the supply system.

[0054] The monitoring unit 8 is further provided with a plurality of fuel leakage sensors (not shown in the figure) and vibration sensors (not shown in the figure), the fuel leakage sensors are arranged on the pipeline 10, and the vibration sensors are arranged on the fuel storage tank 201, the heat exchange tank 401, the buffer tank 501 and the absorption tank 703. The fuel leakage sensors are used for detecting the leakage of the methanol fuel, are electrically connected with the control unit, feed back the detection result to the control unit when the methanol fuel leaks, and control the spray head 7011 of the spraying system 701 to spray the absorption medium to absorb the methanol fuel. The vibration sensors are used for detecting the vibration of the fuel storage tank 201, the heat exchange tank 401, the buffer tank 501 and the absorption tank 703, are electrically connected with the control unit, feed back the detected data to the control unit, and control the operation or shutdown of the entire supply system according to the feedback result, thereby improving the safety of the supply system.

[0055] Please refer to Figures 1-2 The inerting unit 6 is provided with an inert gas storage tank 601, the inert gas storage tank 601 is provided with an air inlet valve 602, and the air inlet valve 602 is connected with the pipeline 10 between the external storage tank 101 and the fuel storage tank 201. The inert gas storage tank 601 is used for introducing nitrogen into the entire supply system, purging and inerting the entire supply system, discharging the residual methanol fuel in the pipeline 10, recycling or post-processing, and ensuring the safety of the supply system.

[0056] In summary, the utility model provides a kind of intelligent supply monitoring system of methanol fuel for ship, by being equipped with filling unit, storage unit, supply unit, heat exchange unit, adjusting unit, inert unit, recovery unit, monitoring unit cooperation use, inert unit carries out nitrogen inertification to whole system, improves security;Adjusting unit carries out the pressure regulation of whole system, improves the stability and security of system;Monitoring unit carries out the monitoring of temperature, pressure, liquid level, methanol leakage, vibration of whole system, also improves the stability and security of system;Recovery unit carries out the recovery of safety valve discharged methanol fuel and leaked methanol fuel, avoids the waste of methanol fuel, reduces cost, and reduces danger;The above unit cooperation use, realizes the efficient, safe, stable supply of methanol fuel.The utility model structure is simple, control is simple, and stability is high, and safety is high, and practicality is high, can be widely applied in fuel supply system technical field for ship.

[0057] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. An intelligent supply monitoring system for marine methanol fuel, characterized in that, It includes filling unit (1), storage unit (2), supply unit (3), heat exchange unit (4), adjusting unit (5) and host (9) communicated in turn through pipeline (10), the filling unit (1) is also communicated with inert unit (6), the storage unit (2) is also communicated with recovery unit (7), the filling unit (1), the storage unit (2), the heat exchange unit (4), the adjusting unit (5), the recovery unit (7), pipeline (10) are equipped with monitoring unit (8); The storage unit (2) is provided with a fuel storage tank (201), the supply unit (3) is provided with a supply pump (301), the heat exchange unit (4) is provided with a heat exchange tank (401), the adjusting unit (5) is provided with a buffer tank (501), the fuel storage tank (201), the supply pump (301), the heat exchange tank (401), the buffer tank (501), the host (9) are communicated in turn through pipeline (10).

2. The intelligent monitoring system for supply of methanol fuel on board a ship as claimed in claim 1, wherein, The fuel storage tank (201) is provided with an outlet valve (202), and the outlet valve (202) is communicated with the supply pump (301); the fuel storage tank (201) is also provided with a gas supply valve (203), and the gas supply valve (203) is communicated with the heat exchange tank (401).

3. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 1 wherein, The heat exchange unit (4) is also provided with a water glycol circulation system (402) and a heat exchanger system (403), the outlet end of the heat exchange tank (401) is communicated with the inlet end of the water glycol circulation system (402), the outlet end of the water glycol circulation system (402) is communicated with the inlet end of the heat exchanger system (403), and the outlet end of the heat exchanger system (403) is communicated with the heat exchange tank (401).

4. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 1 wherein, The filling unit (1) is provided with an external storage tank (101), and the external storage tank (101) is provided with a filling valve (102), and the filling valve (102) is communicated with the fuel storage tank (201) through the pipeline (10).

5. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 4 wherein, The inert unit (6) is provided with an inert gas storage tank (601), and the inert gas storage tank (601) is provided with an inlet valve (602), and the inlet valve (602) is communicated with the pipeline (10) between the external storage tank (101) and the fuel storage tank (201).

6. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 4 wherein, The recovery unit (7) is provided with an absorption tank (703), the fuel storage tank (201) is provided with a first safety valve (204), the buffer tank (501) is provided with a second safety valve (502), and the first safety valve (204) and the second safety valve (502) are communicated with the absorption tank (703) through the pipeline (10).

7. The intelligent supply monitoring system of methanol fuel for marine use as claimed in claim 6, wherein, The recovery unit (7) is further provided with a spraying system (701), the spraying system (701) is provided with a spray head (7011), the spray head (7011) is arranged above the pipeline (10), the spray head (7011) and the lower part of the pipeline (10) are provided with a collecting box (7012); the absorbing tank (703) is provided with a third safety valve (7031), the third safety valve (7031) is communicated with the collecting box (7012) through the pipeline (10).

8. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 7, wherein, The monitoring unit (8) is provided with a plurality of pressure sensors, temperature sensors and liquid level sensors, the external storage tank (101) is provided with a filling pressure sensor (801); the fuel storage tank (201) is provided with a storage tank pressure sensor (802), a storage tank temperature sensor (803) and a storage tank liquid level sensor (804); the heat exchange tank (401) is provided with a heat exchange tank pressure sensor (807) and a heat exchange tank temperature sensor (808); the buffer tank (501) is provided with a buffer tank pressure sensor (809), a buffer tank temperature sensor (810) and a buffer tank liquid level sensor (811); the absorbing tank (703) is provided with an absorbing tank pressure sensor (812), an absorbing tank temperature sensor (813) and an absorbing tank liquid level sensor (814); the collecting box (7012) is provided with a spraying liquid level sensor (815); the pipeline (10) is provided with a plurality of pipeline pressure sensors (805) and pipeline temperature sensors (806).

9. The intelligent supply monitoring system of methanol fuel for marine as claimed in claim 6 wherein, The monitoring unit (8) is further provided with a plurality of fuel leakage sensors and vibration sensors, the fuel leakage sensors are arranged on the pipeline (10), and the vibration sensors are arranged on the fuel storage tank (201), the heat exchange tank (401), the buffer tank (501) and the absorbing tank (703).

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