CN112722151A

CN112722151A - Marine hydrogen system

Info

Publication number: CN112722151A
Application number: CN202110089513.4A
Authority: CN
Inventors: 于泓昊
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-04-30

Abstract

The invention discloses a marine hydrogen system which comprises a plurality of bottle group modules, a filling module, a pressure reducing module and a purging module, wherein the bottle group modules are arranged in parallel, the bottle group modules are used for storing hydrogen and conveying the hydrogen towards a fuel cell, each bottle group module is provided with a bottle group emptying pipeline, the filling module is connected with the bottle group modules and is used for filling the hydrogen towards the bottle group modules, the pressure reducing module is connected between the bottle group modules and the fuel cell and is used for reducing the air pressure of the hydrogen entering the fuel cell, the purging module is connected with the filling module, the purging module can close the filling module to prevent the filling module from filling the hydrogen towards the bottle group modules, and the pipeline of the filling module and the hydrogen in the conveying pipeline of the bottle group modules are purged into the total emptying pipeline. The marine hydrogen structure is simple in structure and good in safety.

Description

Marine hydrogen system

Technical Field

The invention relates to the technical field of ship equipment, in particular to a marine hydrogen system.

Background

The hydrogen fuel cell has the characteristics of cleanness, convenient use and the like, so that the hydrogen fuel cell can be widely applied to various fields, and in the field of ships, a hydrogen filling and outputting system is a core component of a ship power assembly. At present, related research on a marine hydrogen system is less, and potential safety hazards exist in the marine hydrogen system.

Disclosure of Invention

The invention aims to provide a marine hydrogen system which is simple in structure and good in safety.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

the invention discloses a marine hydrogen system, comprising: the fuel cell system comprises a plurality of bottle group modules, a plurality of fuel cell system modules and a plurality of fuel cell system modules, wherein the bottle group modules are arranged in parallel, are used for storing hydrogen and conveying the hydrogen to a fuel cell, and are provided with bottle group emptying pipelines; the filling module is connected with the plurality of bottle group modules and is used for filling hydrogen towards the bottle group modules; a pressure reducing module connected between the cylinder group module and the fuel cell, the pressure reducing module for reducing the pressure of hydrogen gas entering the fuel cell; the purging module is connected with the filling module and can be closed to prevent the filling module from filling hydrogen towards the bottle group module and purge hydrogen in a filling pipeline of the filling module and a conveying pipeline of the bottle group module into a main emptying pipeline.

In some embodiments, the cylinder bank module comprises a plurality of parallel cylinder assemblies, the cylinder assemblies comprising: the hydrogen gas cylinder is used for storing hydrogen and is provided with a charging and discharging port and a pressure relief port, the pressure relief port is provided with a first gas cylinder over-temperature and over-pressure protection device, and the first gas cylinder over-temperature and over-pressure protection device is connected with the cylinder group emptying pipeline; the bottle opening combined valve is provided with a first gas port, a second gas port and a gas bottle interface, and the gas bottle interface is connected with the charging and discharging port; the first air port is connected with the filling pipeline of the filling module through a first air bottle one-way valve; and the second air port is connected with the pressure reduction module through a second air bottle one-way valve.

In some specific embodiments, the cylinder mouth combination valve comprises a cylinder filter, a cylinder overflow valve, a cylinder manual needle valve and a cylinder mouth built-in electromagnetic valve which are sequentially connected in series, one end of the cylinder mouth built-in electromagnetic valve is respectively connected with the cylinder pressure sensor, the first air port and the second air port, and a third cylinder one-way valve is connected in parallel to the cylinder mouth built-in electromagnetic valve.

In some specific embodiments, the finish combining valve further comprises: the two ends of the gas cylinder manual discharge valve are respectively connected with the second gas port and the gas cylinder interface; the second gas cylinder over-temperature and over-pressure protection device is connected with the gas cylinder connector and the cylinder group emptying pipeline; and the gas cylinder temperature sensor is connected with the gas cylinder interface.

In some specific embodiments, the filling module comprises a filling port, a filling filter, a filling pneumatic control ball valve, a filling check valve, a filling pressure gauge and a filling high-pressure sensor which are sequentially connected in series.

In some embodiments, the purge module comprises a nitrogen gas assembly and a purge valve group, wherein the nitrogen gas assembly comprises a nitrogen gas cylinder, a purge high-pressure sensor, a purge filter, a first purge line solenoid valve, a purge pressure regulator and a second purge line solenoid valve which are connected in series in sequence; the purging valve group comprises a third purging pipeline electromagnetic valve, a fourth purging pipeline electromagnetic valve and a purging one-way valve, the third purging pipeline electromagnetic valve and the fourth purging pipeline electromagnetic valve are arranged in parallel, and the four purging pipeline electromagnetic valves and the purging one-way valve are arranged in series; wherein: the third purging pipeline electromagnetic valve is connected with the filling pneumatic control ball valve in series, and when the third purging pipeline electromagnetic valve is opened, nitrogen can enter the filling pneumatic control ball valve to close the filling pneumatic control ball valve; the purging one-way valve is connected with the filling one-way valve in series and connected with the filling pneumatic control ball valve in parallel, and nitrogen can enter the filling pipeline of the filling module through the purging one-way valve to perform pipeline purging.

In some specific embodiments, a purging evacuation port is disposed between the purging pressure regulator and the second purging pipeline electromagnetic valve, and a fifth purging pipeline electromagnetic valve, a purging manual needle valve, and a purging safety valve are connected in parallel to a pipeline connected to the purging evacuation port.

In some embodiments, the pressure reduction module comprises: the pressure reducing one-way valve, the first pressure reducing pipeline electromagnetic valve, the first pressure reducing filter, the pressure reducing valve assembly, the second pressure reducing pipeline electromagnetic valve, the third pressure reducing pipeline electromagnetic valve and the pressure reducing manual stop valve are connected with the conveying pipeline in series; a fourth pressure reducing line solenoid valve connected in parallel with the pressure reducing valve assembly and the first pressure reducing filter; the pressure reducing and emptying valve bank comprises a pressure reducing safety valve, a pressure reducing manual needle valve and a fifth pressure reducing pipeline electromagnetic valve which are arranged in parallel; wherein: the second pressure reducing pipeline electromagnetic valve, the third pressure reducing pipeline electromagnetic valve and the fourth pressure reducing pipeline electromagnetic valve are all normally closed two-position two-way pilot operated electromagnetic valves.

In some specific embodiments, the pressure reducing valve assembly comprises a second pressure reducing filter, a sixth pressure reducing line solenoid valve, a pressure reducing pressure regulator, and a pressure reducing pressure sensor arranged in series, wherein: the sixth pressure reducing pipeline electromagnetic valve is a normally closed two-position two-way pilot operated electromagnetic valve.

In some embodiments, the marine hydrogen system further comprises a main emptying module, wherein the main emptying module comprises a main emptying pipeline electromagnetic valve, a main emptying manual needle valve, an emptying one-way valve and a flame arrester which are arranged on a main emptying pipeline; wherein: the total emptying pipeline electromagnetic valve, the emptying one-way valve and the flame arrester are arranged in series, and the total emptying manual needle valve and the total emptying pipeline electromagnetic valve are arranged in parallel.

The marine hydrogen system provided by the embodiment of the invention has the advantages that the filling module, the bottle group module and the pressure reducing module are arranged, so that the storage and release of hydrogen can be better realized, the input air pressure of the fuel cell is reduced, and the use safety of the fuel cell and the marine hydrogen system is ensured; due to the adoption of the purging module, the purging module can purge a pipeline when the marine hydrogen is started and closed, so that not only can the influence of impurity gas on the normal work of the fuel cell caused by the entering of the impurity gas be avoided, but also the potential safety hazard caused by excessive residual hydrogen after the system is closed can be avoided; the purging module can also disconnect the filling module from the bottle group module when the filling is abnormal, and purges the filling pipeline, so that the filling safety is ensured, and the reliability and the safety of the whole marine hydrogen system are improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a marine hydrogen system according to an embodiment of the present invention.

Fig. 2 is a simplified schematic diagram of a marine hydrogen system in accordance with an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a bottle group module of a marine hydrogen system according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a bottle mouth combination valve of the bottle group module according to the embodiment of the invention.

Fig. 5 is a schematic structural diagram of a filling module and a purging module of a marine hydrogen system according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a pressure reduction module of a marine hydrogen system according to an embodiment of the present invention.

Reference numerals:

1. a bottle set module; 11. a gas cylinder assembly; 111. a hydrogen gas cylinder; 1111. a charging and discharging port; 1112. a pressure relief port; 112. the first gas cylinder over-temperature and over-pressure protection device; 113. a bottle mouth combination valve; 1131. a first gas port; 1132. a second gas port; 1133. a gas cylinder interface; 1134. a first gas cylinder check valve; 1135. a second gas cylinder check valve; 1136. a gas cylinder filter; 1137. a gas cylinder overflow valve; 1138. a manual needle valve of the gas cylinder; 1139. an electromagnetic valve is arranged in the bottle mouth; 11310. a third gas cylinder check valve; 11311. a gas cylinder pressure sensor; 11312. a gas cylinder manual discharge valve; 11313. the second gas cylinder overtemperature and overpressure protection device; 11314. a gas cylinder temperature sensor;

2. a filling module; 21. a filling port; 22. filling a filter; 23. filling a pneumatic control ball valve; 24. filling a one-way valve; 25. filling a pressure gauge; 26. filling a high-pressure sensor;

3. a pressure reduction module; 31. a pressure reducing one-way valve; 32. a first pressure reducing line solenoid valve; 33. a first reduced-pressure filter; 34. a pressure reducing valve assembly; 341. a second reduced-pressure filter; 342. a sixth pressure reducing line solenoid valve 343, a pressure reducing pressure regulator; 344. a reduced pressure sensor; 35. a second relief line solenoid valve; 36. a third pressure reducing line solenoid valve; 37. a pressure reducing manual stop valve; 38. a fourth relief line solenoid valve; 39. a pressure reducing and emptying valve bank; 391. a pressure relief valve; 392. a pressure reducing manual needle valve; 393. a fifth relief line solenoid valve;

4. a purge module; 41. a nitrogen component; 411. a nitrogen gas cylinder; 412. purging the high pressure sensor; 413. purging the filter; 414. a first purge line solenoid valve; 415. a purge pressure regulator; 416. a second purge line solenoid valve; 417. purging a drain port; 418. a fifth purge line solenoid valve; 419. purging the manual needle valve; 410. purging the safety valve; 42. a purge valve bank; 421. a third purge line solenoid valve; 422. a fourth purge line solenoid valve; 423. purging the one-way valve;

5. a total evacuation module; 51. a main evacuation line solenoid valve; 52. totally emptying the manual needle valve; 53. an emptying one-way valve; 54. a flame arrestor;

6. a bottle group emptying pipeline; 7. a filling pipeline; 8. a delivery conduit; 9. the pipeline is emptied.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A specific structure of a hydrogen system for a ship according to an embodiment of the present invention will be described with reference to fig. 1 to 6.

The invention discloses a marine hydrogen system, as shown in fig. 1-2, the marine hydrogen system of the embodiment comprises a plurality of bottle group modules 1, a filling module 2, a pressure reducing module 3, a purging module 4 and a total emptying module 5, wherein the bottle group modules 1 are arranged in parallel, the bottle group modules 1 are used for storing hydrogen and conveying the hydrogen towards a fuel cell, the bottle group modules 1 are provided with bottle group emptying pipelines 6, the filling module 2 is connected with the bottle group modules 1, the filling module 2 is used for filling the hydrogen towards the bottle group modules 1, the pressure reducing module 3 is connected between the bottle group modules 1 and the fuel cell, the pressure reducing module 3 is used for reducing the air pressure of the hydrogen entering the fuel cell, the purging module 4 is connected with the filling module 2, the purging module 4 can close the filling module 2 to prevent the filling module 2 from filling the hydrogen towards the bottle group modules 1, and hydrogen in the filling pipeline 7 of the filling module 2 and the conveying pipeline 8 of the bottle group module 1 is swept to the main emptying pipeline 9, and the main emptying module 5 comprises a main emptying pipeline electromagnetic valve 51, a main emptying manual needle valve 52, an emptying one-way valve 53 and a flame arrester 54 which are arranged on the main emptying pipeline 9: the main emptying pipeline electromagnetic valve 51, the emptying one-way valve 53 and the flame arrester 54 are arranged in series, and the main emptying manual needle valve 52 and the main emptying pipeline electromagnetic valve 51 are arranged in parallel.

It will be appreciated that during filling of hydrogen gas towards the battery module 1, if the filling is normal, the purge module 4 is not activated, and if the filling is abnormal, the purge module 4 can be activated to close the filling module 2, so that the filling process of the battery module 1 is stopped and the hydrogen gas in the filling line 7 is purged into the main emptying line 9. The safety in the filling process is ensured, the phenomena of fire and even explosion caused by abnormal filling are avoided, and the filling safety of the marine hydrogen system is improved.

When the marine hydrogen system is started, the purging module 4 purges impurities in the filling pipeline 7 of the filling module 2 and the conveying pipeline 8 of the cylinder group module 1 into the total emptying pipeline 9, and after a period of time, the cylinder group module 1 is started, and the cylinder group module 1 can convey hydrogen towards the interior of the fuel cell. The cleanliness of the internal gas of the fuel cell during operation is ensured, and the working safety of the hydrogen system for the ship and the fuel cell is ensured.

When the marine hydrogen system needs to be closed, the cylinder group module 1 is closed, the purging module 4 is started, the purging module 4 purges residual hydrogen in the conveying pipeline 8 of the cylinder group module 1 into the total emptying pipeline 9, and when the hydrogen concentration sensor detects that the hydrogen concentration in the conveying pipeline 8 is reduced to below 2%, the purging module 4 can be closed, so that the content of the residual hydrogen in the conveying pipeline 8 is lower after the marine hydrogen system is completed, and the use safety of the marine hydrogen system is ensured.

The marine hydrogen system of the embodiment has the filling module 2, the bottle group module 1 and the decompression module 3, so that the storage and release of hydrogen can be better realized, the input air pressure of the fuel cell is reduced, and the use safety of the fuel cell and the marine hydrogen system is ensured; due to the adoption of the purging module 4, the purging module 4 can purge a pipeline when the marine hydrogen is started and closed, so that not only can the influence of impurity gas on the normal work of the fuel cell caused by the entering of the impurity gas be avoided, but also the potential safety hazard caused by excessive residual hydrogen after the system is closed can be avoided; the purging module 4 can also disconnect the filling module 2 from the bottle group module 1 when the filling is abnormal, and purge the filling pipeline 7, so that the filling safety is ensured, and the reliability and the safety of the whole marine hydrogen system are improved.

It should be added here that the marine hydrogen system of the present embodiment should further include a hydrogen detecting unit (not shown) for measuring the hydrogen content inside the system pipeline and the hydrogen content in the environment. Can detect the hydrogen content in system's pipeline and the environment betterly like this, initiatively indicate the user when hydrogen content is unusual, promoted marine hydrogen system's security.

Specifically, as shown in fig. 3-4, the cylinder group module 1 includes a plurality of gas cylinder assemblies 11 connected in parallel, each gas cylinder assembly 11 includes a hydrogen gas cylinder 111 and a cylinder opening combination valve 113, the hydrogen gas cylinder 111 is used for storing hydrogen gas, the hydrogen gas cylinder 111 has a charging and discharging port 1111 and a pressure discharging port 1112, the pressure discharging port 1112 is provided with a first gas cylinder over-temperature and over-pressure protection device 112, the first gas cylinder over-temperature and over-pressure protection device 112 is connected to the cylinder group emptying pipe 6, the cylinder opening combination valve 113 has a first gas opening 1131, a second gas opening 1132 and a gas cylinder interface 1133, the gas cylinder interface 1133 is connected to the charging and discharging port 1111, and the first gas opening 1131 is connected to the charging pipe 7 of the charging module 2 through a first gas cylinder check valve 1134; the second port 1132 is connected to the pressure reduction module 3 through a second cylinder check valve 1135. The opening combination valve 113 can better control the opening of the charging and discharging port 1111 of the hydrogen gas bottle 111, so that the gas bottle assembly 11 can stably perform hydrogen gas filling and hydrogen gas transportation. The pressure relief port 1112 can be automatically opened when the temperature of the hydrogen gas cylinder 111 reaches 110 ℃ to perform emergency relief of hydrogen gas, so that the safety of the hydrogen gas cylinder 111 is ensured.

More specifically, as shown in fig. 4, the cylinder opening combination valve 113 includes a cylinder filter 1136, a cylinder flow passing valve 1137, a cylinder manual needle valve 1138, a cylinder built-in electromagnetic valve 1139, a cylinder manual discharge valve 11312, a second cylinder over-temperature and over-pressure protection device 11313 and a cylinder temperature sensor 11314, which are connected in series in sequence, one end of the cylinder built-in electromagnetic valve 1139 is connected to a cylinder pressure sensor 11311, a first gas port 1131 and a second gas port 1132 respectively, and a third cylinder check valve 11310 is connected in parallel to the cylinder built-in electromagnetic valve 1139. Two ends of the manual cylinder discharge valve are respectively connected with the second gas port 1132 and the gas cylinder interface 1133, the second gas cylinder over-temperature and over-pressure protection device 11313 is connected with the gas cylinder interface 1133 and the cylinder group emptying pipeline 6, and the gas cylinder temperature sensor 11314 is connected with the gas cylinder interface 1133.

It can be understood that the gas cylinder filter 1136 can filter out impurities, so that the hydrogen gas injected into and output from the hydrogen gas cylinder 111 is relatively pure, thereby ensuring the operational reliability of the cylinder group module 1. The gas cylinder overflow valve 1137, the gas cylinder manual needle valve 1138 and the bottle opening built-in electromagnetic valve 1139 form an input/output valve group of the cylinder group module 1, so that hydrogen can be stably injected into or output from the hydrogen gas cylinder 111, the output and injection pressure of the hydrogen can be controlled, the phenomenon that the hydrogen in the hydrogen cylinder is completely leaked due to the breakage of a pipeline is avoided, and the working safety of the cylinder group module 1 is ensured. The manual gas cylinder discharge valve 11312 can realize manual discharge of the hydrogen gas cylinder 111, ensure that the hydrogen gas cylinder 111 can stably inject and output hydrogen, and timely release hydrogen when the hydrogen gas cylinder 111 is abnormal, thereby ensuring reliability and safety of the cylinder group module 1. The second gas cylinder over-temperature and over-pressure protection device 11313 and the gas cylinder temperature sensor 11314 can monitor the temperature of the hydrogen gas cylinder 111, and active pressure relief is realized when the temperature of the hydrogen gas cylinder 111 is too high, so that the use safety of the hydrogen gas cylinder 111 is ensured.

Of course, it should be additionally noted herein that in other embodiments of the present invention, the specific structure of the bottle mouth combination valve 113 may be combined with the gas valve element and the detection element according to actual needs, and is not limited to the above definition.

Specifically, as shown in fig. 5, the filling module 2 includes a filling port 21, a filling filter 22, a filling pneumatic control ball valve 23, a filling check valve 24, a filling pressure gauge 25, and a filling high-pressure sensor 26, which are connected in series in sequence. It can be understood that the filling pneumatic control ball valve 23 can be opened under the air pressure of the hydrogen source to realize filling of hydrogen, and can also be closed under the air pressure of the purging module 4, so that hydrogen can be stably filled into the hydrogen cylinder 111, and can be closed in time when filling is abnormal, thereby avoiding safety accidents. The filling one-way valve 24 can prevent the hydrogen from flowing backwards, thereby avoiding the leakage of the hydrogen along the filling pipeline 7.

Of course, it should be additionally noted herein that in other embodiments of the present invention, the specific structure of the filling valve set of the filling module 2 may combine the gas valve element and the detection element according to actual needs, and is not limited to the above definition.

Specifically, as shown in fig. 5, the purge module 4 includes a nitrogen gas assembly 41 and a purge valve group 42, the nitrogen gas assembly 41 includes a nitrogen gas cylinder 411, a purge high pressure sensor 412, a purge filter 413, a first purge line solenoid valve 414, a purge pressure regulator 415, and a second purge line solenoid valve 416, which are connected in series in sequence; the purging valve group 42 includes a third purging line solenoid valve 421, a fourth purging line solenoid valve 422, and a purging check valve 423, the third purging line solenoid valve 421 and the fourth purging line solenoid valve 422 are arranged in parallel, and the four purging line solenoid valves and the purging check valve 423 are arranged in series. The third purge line electromagnetic valve 421 is connected in series with the filling pneumatic control ball valve 23, and when the third purge line electromagnetic valve 421 is opened, nitrogen can enter the filling pneumatic control ball valve 23 to close the filling pneumatic control ball valve 23; the purging one-way valve 423 is connected with the filling one-way valve 24 in series and connected with the filling pneumatic control ball valve 23 in parallel, and nitrogen can enter the filling pipeline 7 of the filling module 2 through the purging one-way valve 423 for pipeline purging.

It will be appreciated that during normal filling, the purge module 4 is in a closed state. When the filling process is abnormal, the bottle mouth combination valve 113 of the bottle group module 1 is closed, the purging module 4 is started, the nitrogen in the nitrogen bottle 411 and the nitrogen pass through the purging high-pressure sensor 412, the purging filter 413, the first purging pipeline electromagnetic valve 414, the purging pressure regulator 415 and the second purging pipeline electromagnetic valve 416 and then are divided into two parts, one part enters the filling pipeline 7 through the fourth purging pipeline electromagnetic valve 422, the purging one-way valve 423 and the filling one-way valve 24 to purge the filling pipeline 7, so that the hydrogen in the filling pipeline 7 enters the total emptying pipeline 9 under the action of the nitrogen to reduce the hydrogen content in the filling pipeline 7, the other part enters the pneumatic control ball valve 23 after passing through the third purging pipeline electromagnetic valve 421, the pneumatic control ball valve 23 is closed under the action of the nitrogen pressure to stop the hydrogen filling, and therefore, the hydrogen purging in the abnormal filling process can be realized, the filling safety is ensured. Similarly, when the whole system starts or needs to be closed after the whole system finishes working, nitrogen can enter the filling pipeline 7 through the fourth purging pipeline electromagnetic valve 422, the purging one-way valve 423 and the filling one-way valve 24 to purge the filling pipeline 7 and subsequent output pipelines.

It should be added that the purge high pressure sensor 412 can detect the output pressure of the nitrogen gas, so as to avoid the phenomenon that the pipeline is damaged due to the excessive pressure of the nitrogen gas. The purging filter 413 can filter impurities in the nitrogen, so that the cleanliness of a purging air source is ensured, the purging efficiency of the marine hydrogen system is ensured, the impurity content and the residual hydrogen content of the pipeline of the marine hydrogen system are well reduced, and the use reliability and the use safety of the marine hydrogen system are ensured. Of course, it should be additionally noted that, in other embodiments of the present invention, the kinds and communication relationships of the working valves in the purge valve set 42 and the nitrogen gas set 41 may be selected according to actual needs, and are not limited to the above limitations.

More specifically, a purge drain 417 is arranged between the purge pressure regulator 415 and the second purge line solenoid valve 416, and a fifth purge line solenoid valve 418, a purge manual needle valve 419 and a purge safety valve 410 are arranged in parallel on a line connected with the purge drain 417. It can be understood that the additional purging evacuation port 417 can purge the purging pipeline of the purging module 4, and can ensure that the phenomenon of excessive air pressure in the purging pipeline occurs, thereby ensuring the cleanliness of the purging gas and the operational reliability and operational safety of the purging module 4.

Specifically, as shown in fig. 6, the pressure reducing module 3 includes a pressure reducing check valve 31, a first pressure reducing pipeline electromagnetic valve 32, a first pressure reducing filter 33, a pressure reducing valve assembly 34, a second pressure reducing pipeline electromagnetic valve 35, a third pressure reducing pipeline electromagnetic valve 36, a pressure reducing manual stop valve 37, a fourth pressure reducing pipeline electromagnetic valve 38 and a pressure reducing exhaust valve group 39, which are arranged in series with the conveying pipeline 8, the fourth pressure reducing pipeline electromagnetic valve 38 is connected in parallel with the pressure reducing valve assembly 34 and the first pressure reducing filter 33, and the pressure reducing exhaust valve group 39 includes a pressure reducing safety valve 391, a pressure reducing manual needle valve 392 and a fifth pressure reducing pipeline electromagnetic valve 393 which are arranged in parallel. The second pressure reducing line solenoid valve 35, the third pressure reducing line solenoid valve 36, and the fourth pressure reducing line solenoid valve 38 are all normally closed two-position two-way pilot operated solenoid valves. It can be understood that hydrogen output by the cylinder group module 1 sequentially passes through the pressure reducing one-way valve 31, the first pressure reducing pipeline electromagnetic valve 32, the first pressure reducing filter 33, the pressure reducing valve assembly 34, the second pressure reducing pipeline electromagnetic valve 35, the third pressure reducing pipeline electromagnetic valve 36 and the pressure reducing manual stop valve 37 to enter the fuel cell, and the pressure reducing one-way valve 31 can avoid hydrogen backflow, so that hydrogen can be ensured to stably enter the fuel cell. The first pressure reducing pipeline electromagnetic valve 32 is a switch valve of the whole pressure reducing module 3, and the first pressure reducing pipeline electromagnetic valve 32 is always in a closed state in the processes of filling and purging the filling pipeline 7 and the output pipeline, so that potential safety hazards caused by that hydrogen is injected into the fuel cell in the filling process and nitrogen enters the fuel cell in the purging process are avoided, and the normal work of the fuel cell is influenced. The first pressure reducing filter 33 can filter impurities in the hydrogen input into the pressure reducing module 3 from the bottle group module 1, so that the hydrogen entering the fuel cell is relatively clean, and the working reliability of the fuel cell is ensured. The pressure reducing valve assembly 34, the second pressure reducing pipeline electromagnetic valve 35, the third pressure reducing pipeline electromagnetic valve 36 and the pressure reducing manual stop valve 37 form a pressure reducing valve bank of the pressure reducing module 3, so that hydrogen can be stably reduced, the pressure of the hydrogen entering the fuel cell is controlled, and the working safety of the fuel cell is ensured. The pressure-reducing manual shutoff valve 37 can cut off the gas supply to the fuel cell when the fuel cell fails, thereby avoiding a greater safety accident. The pressure reduction evacuation valve group 39 can evacuate hydrogen in the pressure reduction module 3, so that the hydrogen content in the pressure reduction module 3 in a shutdown state is reduced, and the safety of the marine hydrogen system in the shutdown state is ensured.

More specifically, the pressure reducing valve assembly 34 includes a second pressure reducing filter 341, a sixth pressure reducing line solenoid valve 342, a pressure reducing pressure regulator 343, and a pressure reducing pressure sensor 344, which are arranged in series, and the sixth pressure reducing line solenoid valve 342 is a normally closed two-position two-way pilot type solenoid valve.

It can be understood that the second pressure reducing filter 341 can filter impurities in the hydrogen gas input into the pressure reducing module 3 by the bottle group module 1, so as to ensure that the hydrogen gas entering the fuel cell is relatively clean, and ensure the working reliability of the fuel cell. The pressure reducing regulator 343 and the pressure reducing sensor 344 can monitor and adjust the air pressure in the pipeline of the pressure reducing module 3, thereby preventing the damage of the pipeline or the damage of the fuel cell caused by the excessive air pressure inside the pipeline.

The operation of the marine hydrogen system of the present embodiment will be described in detail below:

the starting state:

opening the main evacuation line electromagnetic valve 51 and the main evacuation manual needle valve 52, closing the pressure reducing valve assembly 34 and the bottle mouth combination valve 113, dividing the nitrogen into two parts after passing through the purging high-pressure sensor 412, the purging filter 413, the first purging line electromagnetic valve 414, the purging pressure regulator 415 and the second purging line electromagnetic valve 416, purging the filling pipeline 7 and the output pipeline by one part after passing through the fourth purging line electromagnetic valve 422, the purging check valve 423, the filling check valve 24, the first gas cylinder check valve 1134, the first gas port 1131, the second gas port 1132 and the second gas cylinder check valve 1135, so that the hydrogen in the filling pipeline 7 and the output pipeline enters the main evacuation pipeline 9 under the action of the nitrogen, and entering the filling pneumatic control ball valve 23 after passing through the third purging line electromagnetic valve 421, so as to ensure that the filling pneumatic control ball valve 23 is in a closed state. The purge condition continues for a period of time to vent open the pressure relief valve assembly 34 and port combination valve 113 so that the cylinder stack module 1 delivers hydrogen gas toward the fuel cell.

And (3) filling state:

the main evacuation pipeline electromagnetic valve 51, the main evacuation manual needle valve 52 and the first pressure reduction pipeline electromagnetic valve 32 are in a closed state, the combined valve 113 at the opening of the bottle is opened, hydrogen enters from the filling port 21, and then enters the hydrogen gas bottle 111 through the filling filter 22, the filling pneumatic control ball valve 23, the filling one-way valve 24, the filling pressure gauge 25, the filling high-pressure sensor 26, the first gas port 1131, the first gas bottle one-way valve 1134, the electromagnetic valve 1139 at the built-in opening of the bottle, the manual needle valve 1138 of the gas bottle, the gas bottle overflowing valve 1137, the gas bottle filter 1136 and the gas bottle interface 1133 in.

When the filling is abnormal, the main evacuation pipeline electromagnetic valve 51 and the main evacuation manual needle valve 52 are opened, the bottleneck combination valve 113 is closed, the purging module 4 is started, nitrogen in the nitrogen bottle 411 passes through the purging high-pressure sensor 412, the purging filter 413, the first purging pipeline electromagnetic valve 414, the purging pressure regulator 415 and the second purging pipeline electromagnetic valve 416 and then is divided into two parts, one part enters the filling pipeline 7 through the fourth purging pipeline electromagnetic valve 422, the purging one-way valve 423 and the filling one-way valve 24 to purge the filling pipeline 7, so that hydrogen in the filling pipeline 7 enters the main evacuation pipeline 9 under the action of the nitrogen, the content of the hydrogen in the filling pipeline 7 is reduced, the other part enters the filling pneumatic control ball valve 23 after passing through the third purging pipeline electromagnetic valve 421, and the filling pneumatic control ball valve 23 is closed under the action of the nitrogen pressure to stop the hydrogen filling.

And (3) outputting the state:

and closing the main emptying pipeline electromagnetic valve 51, the main emptying manual needle valve 52, the pressure reducing safety valve 391, the pressure reducing manual needle valve 392 and the fifth pressure reducing pipeline electromagnetic valve 393, opening the first pressure reducing pipeline electromagnetic valve 32, and allowing the hydrogen to sequentially pass through the gas cylinder filter 1136, the gas cylinder overflowing valve 1137, the gas cylinder manual needle valve 1138, the bottle opening built-in electromagnetic valve 1139, the second gas port 1132, the second gas cylinder one-way valve 1135, the pressure reducing one-way valve 31, the first pressure reducing pipeline electromagnetic valve 32, the first pressure reducing filter 33, the pressure reducing valve assembly 34, the second pressure reducing filter 341, the sixth pressure reducing pipeline electromagnetic valve 342, the pressure reducing pressure regulator 343, the pressure reducing pressure sensor 344, the second pressure reducing pipeline electromagnetic valve 35, the third pressure reducing pipeline electromagnetic valve 36 and the pressure reducing manual stop.

Shutdown state:

opening the main evacuation line electromagnetic valve 51 and the main evacuation manual needle valve 52, closing the pressure reducing valve assembly 34 and the bottle mouth combination valve 113, dividing the nitrogen into two parts after passing through the purging high-pressure sensor 412, the purging filter 413, the first purging line electromagnetic valve 414, the purging pressure regulator 415 and the second purging line electromagnetic valve 416, purging the filling pipeline 7 and the output pipeline by one part after passing through the fourth purging line electromagnetic valve 422, the purging check valve 423, the filling check valve 24, the first gas cylinder check valve 1134, the first gas port 1131, the second gas port 1132 and the second gas cylinder check valve 1135, so that the hydrogen in the filling pipeline 7 and the output pipeline enters the main evacuation pipeline 9 under the action of the nitrogen, and entering the filling pneumatic control ball valve 23 after passing through the third purging line electromagnetic valve 421, so as to ensure that the filling pneumatic control ball valve 23 is in a closed state. And when the hydrogen concentration has dropped below 2%, closing all valve banks of the whole marine hydrogen system.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A marine hydrogen system, comprising:

the fuel cell system comprises a plurality of bottle group modules (1), wherein the bottle group modules (1) are arranged in parallel, the bottle group modules (1) are used for storing hydrogen and conveying the hydrogen to a fuel cell, and the bottle group modules (1) are provided with bottle group emptying pipelines (6);

the filling module (2), the filling module (2) is connected with the plurality of bottle group modules (1), and the filling module (2) is used for filling hydrogen towards the bottle group modules (1);

a pressure reducing module (3), the pressure reducing module (3) being connected between the cylinder group module (1) and the fuel cell, the pressure reducing module (3) being used for reducing the pressure of hydrogen gas entering the fuel cell;

a purging module (4), wherein the purging module (4) is connected to the filling module (2), and wherein the purging module (4) is capable of closing the filling module (2) to prevent the filling module (2) from filling hydrogen towards the cylinder group module (1), and purging hydrogen in the filling pipe (7) of the filling module (2) and the delivery pipe (8) of the cylinder group module (1) into a total evacuation pipe (9).

2. Marine hydrogen system according to claim 1, characterised in that the cylinder group module (1) comprises a plurality of parallel gas cylinder assemblies (11), the gas cylinder assemblies (11) comprising:

the hydrogen gas cylinder (111), the hydrogen gas cylinder (111) is used for storing hydrogen, the hydrogen gas cylinder (111) is provided with a charging and discharging port (1111) and a pressure discharging port (1112), the pressure discharging port (1112) is provided with a first cylinder over-temperature and over-pressure protection device (112), and the first cylinder over-temperature and over-pressure protection device (112) is connected with the cylinder group emptying pipeline (6);

the combined valve (113) at the bottle opening is provided with a first gas port (1131), a second gas port (1132) and a gas cylinder interface (1133), and the gas cylinder interface (1133) is connected with the charging and discharging port (1111); the first gas port (1131) is connected with the filling pipeline (7) of the filling module (2) through a first gas cylinder one-way valve (1134); and the second gas port (1132) is connected with the pressure reduction module (3) through a second gas cylinder one-way valve (1135).

3. The marine hydrogen system according to claim 2, wherein the cylinder port combination valve (113) comprises a cylinder filter (1136), a cylinder flow-passing valve (1137), a cylinder manual needle valve (1138) and a cylinder port built-in solenoid valve (1139) which are connected in series in sequence, one end of the cylinder port built-in solenoid valve (1139) is respectively connected with a cylinder pressure sensor (11311), the first gas port (1131) and the second gas port (1132), and a third cylinder check valve (11310) is connected in parallel to the cylinder port built-in solenoid valve (1139).

4. Marine hydrogen system according to claim 2, characterised in that the mouthpiece combination valve (113) further comprises:

the two ends of the gas cylinder manual discharge valve (11312) are respectively connected with the second gas port (1132) and the gas cylinder interface (1133);

the second gas cylinder over-temperature and over-pressure protection device (11313), the second gas cylinder over-temperature and over-pressure protection device (11313) is connected with the gas cylinder interface (1133) and the cylinder group emptying pipeline (6);

a cylinder temperature sensor (11314), the cylinder temperature sensor (11314) connected to the cylinder interface (1133).

5. Marine hydrogen system according to claim 1, characterized in that the filling module (2) comprises a filling port (21), a filling filter (22), a filling pneumatic control ball valve (23), a filling check valve (24), a filling pressure gauge (25) and a filling high pressure sensor (26) connected in series in sequence.

6. Marine hydrogen system according to claim 5, characterised in that the purge module (4) comprises a nitrogen gas module (41) and a purge valve block (42), the nitrogen gas module (41) comprising a nitrogen gas cylinder (411), a purge high pressure sensor (412), a purge filter (413), a first purge line solenoid valve (414), a purge pressure regulator (415) and a second purge line solenoid valve (416) connected in series in sequence;

the purging valve group (42) comprises a third purging pipeline electromagnetic valve (421), a fourth purging pipeline electromagnetic valve (422) and a purging one-way valve (423), the third purging pipeline electromagnetic valve (421) and the fourth purging pipeline electromagnetic valve (422) are arranged in parallel, and the four purging pipeline electromagnetic valves and the purging one-way valve (423) are arranged in series; wherein:

the third purging pipeline electromagnetic valve (421) is connected with the filling pneumatic control ball valve (23) in series, and when the third purging pipeline electromagnetic valve (421) is opened, nitrogen can enter the filling pneumatic control ball valve (23) to close the filling pneumatic control ball valve (23);

the purging one-way valve (423) is connected with the filling one-way valve (24) in series and connected with the filling pneumatic control ball valve (23) in parallel, and nitrogen can enter the filling pipeline (7) of the filling module (2) through the purging one-way valve (423) to perform pipeline purging.

7. The marine hydrogen system according to claim 6, wherein a purging drain (417) is provided between the purging pressure regulator (415) and the second purging line solenoid valve (416), and a fifth purging line solenoid valve (418), a purging manual needle valve (419) and a purging safety valve (410) are provided in parallel on a line connecting the purging drain (417).

8. Marine hydrogen system according to claim 1, characterised in that the pressure reducing module (3) comprises:

the pressure reducing one-way valve (31), the first pressure reducing pipeline electromagnetic valve (32), the first pressure reducing filter (33), the pressure reducing valve assembly (34), the second pressure reducing pipeline electromagnetic valve (35), the third pressure reducing pipeline electromagnetic valve (36) and the pressure reducing manual stop valve (37) are connected with the conveying pipeline (8) in series;

a fourth pressure reducing line solenoid valve (38), said fourth pressure reducing line solenoid valve (38) being connected in parallel with said pressure reducing valve assembly (34) and said first pressure reducing filter (33);

the pressure reducing and emptying valve group (39) comprises a pressure reducing safety valve (391), a pressure reducing manual needle valve (392) and a fifth pressure reducing pipeline electromagnetic valve (393) which are arranged in parallel; wherein:

the second pressure reducing line solenoid valve (35), the third pressure reducing line solenoid valve (36) and the fourth pressure reducing line solenoid valve (38) are all normally closed two-position two-way pilot operated solenoid valves.

9. Marine hydrogen system according to claim 8, characterised in that the pressure reducing valve assembly (34) comprises a second pressure reducing filter (341), a sixth pressure reducing line solenoid valve (342), a pressure reducing pressure regulator (343) and a pressure reducing pressure sensor (344) arranged in series, wherein: the sixth pressure reducing pipeline electromagnetic valve (342) is a normally closed two-position two-way pilot operated electromagnetic valve.

10. Marine hydrogen system according to any of claims 1-9, characterised in that the marine hydrogen system further comprises a total emptying module (5), which total emptying module (5) comprises a total emptying line solenoid valve (51), a total emptying manual needle valve (52), an emptying non-return valve (53) and a flame arrester (54) arranged on the total emptying pipe (9); wherein:

the device is characterized in that the total emptying pipeline electromagnetic valve (51), the emptying check valve (53) and the flame arrester (54) are arranged in series, and the total emptying manual needle valve (52) and the total emptying pipeline electromagnetic valve (51) are arranged in parallel.