Integrated high-pressure hydrogen storage and water supply device for underwater fuel cell system

Abstract

The invention provides an integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system. The integrated high-pressure hydrogen storage and water supply device sequentially comprises a high-pressure hydrogen cylinder, a built-in rubber bag and a shell from inside to outside, the tail end of the high-pressure hydrogen cylinder is sleeved with a round sleeve with a cap, and the head end of the high-pressure hydrogen cylinder is fixedly connected with an air inlet and outlet metal nozzle. The inner side of the tail end of the built-in rubber capsule is in wedge connection with the capped round sleeve, the outer side of the tail end of the built-in rubber capsule abuts against the shell, and the capped round sleeve is fixedly connected with the shell; the inner side of the head end of the built-in rubber bag is in wedge connection with the air inlet and outlet metal nozzle, the outer side of the head end of the built-in rubber bag abuts against the shell, and the metal nozzle locking piece is fixedly connected with the air inlet and outlet metal nozzle and abuts against the shell. A variable gas storage cavity is formed between the built-in rubber bag and the high-pressure hydrogen cylinder, a variable water storage cavity is formed between the shell and the built-in rubber bag, a water outlet is formed in the shell, a low-pressure gas flow channel in the gas inlet and outlet metal nozzle is communicated with the variable gas storage cavity, and a high-pressure gas flow channel in the gas inlet and outlet metal nozzle is communicated with an inner cavity of the high-pressure hydrogen cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of water storage and supply, and in particular to an integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system. Background Art

[0002] The high-pressure hydrogen storage and water supply device and hydrogen supply device are applied to the underwater fuel cell system and installed in the power system compartment. The functions are: the built-in rubber bag is squeezed by the gas supply from the upstream gas cylinder, so that the volume of the water storage chamber between the built-in rubber bag and the outer shell is gradually reduced, and then water is gradually supplied to the downstream system, and hydrogen is supplied to the downstream system by opening the electric control valve connected to the high-pressure hydrogen cylinder;

[0003] Most of the existing water supply devices and hydrogen supply devices are set up in separate tanks, that is, the water supply device and the hydrogen supply device are two independent tank groups. Although they can meet the needs of gas storage / supply and hydrogen storage / supply, the overall structure occupies a large space and cannot be used in the field of underwater fuel cells. Summary of the invention

[0004] In view of this, the problem to be solved by the present invention is to provide an integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system.

[0005] In order to solve the above technical problems, the technical solution adopted by the invention is:

[0006] An integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system includes, from the inside to the outside, a high-pressure hydrogen cylinder, a built-in rubber bag, and an outer shell;

[0007] The tail end of the high-pressure hydrogen cylinder is provided with a round sleeve with a cap, and the head end of the high-pressure hydrogen cylinder is fixedly connected with an inlet and outlet metal nozzle;

[0008] The inner side of the tail end of the built-in rubber bag is wedged with the capped round sleeve, the outer side of the tail end of the built-in rubber bag is abutted with the outer shell, and the capped round sleeve is tightly connected with the outer shell;

[0009] The inner side of the head end of the built-in rubber bag is wedged with the inlet and exhaust metal nozzle, the outer side of the head end of the built-in rubber bag is abutted with the shell, and the metal nozzle locking piece is tightly connected with the inlet and exhaust metal nozzle and abutted with the shell;

[0010] A variable air storage cavity is formed between the built-in rubber bag and the high-pressure hydrogen cylinder, a variable water storage cavity is formed between the outer shell and the built-in rubber bag, a water outlet is opened on the outer shell, the low-pressure gas flow channel in the air inlet and exhaust metal nozzle is connected to the variable air storage cavity, and the high-pressure gas flow channel in the air inlet and exhaust metal nozzle is connected to the inner cavity of the high-pressure hydrogen cylinder.

[0011] The outer shell comprises a first section shell and a tail section shell which are butt-welded.

[0012] The outer wall of the capped round sleeve is provided with an external thread, and the corresponding inner wall of the outer shell is provided with an internal thread.

[0013] The metal nozzle locking piece is a flange plate, an inner circumferential surface of the flange plate is configured with an internal thread, and an outer circumferential surface of the corresponding intake and exhaust metal nozzle is configured with an external thread.

[0014] A sealing ring groove is constructed on the inner circumferential surface of the capped circular sleeve, and a sealing ring is also sleeved on the tail end of the high-pressure hydrogen cylinder, wherein the sealing ring abuts between the sealing ring groove and the tail end of the high-pressure hydrogen cylinder.

[0015] The inlet and outlet ports of the low-pressure gas flow channel and the inlet and outlet ports of the high-pressure gas flow channel are respectively connected to a low-pressure air duct and a high-pressure air duct.

[0016] The advantages and positive effects of the present invention are:

[0017] Through the design of the sealing structure, a variable gas storage chamber is formed between the built-in rubber bag and the high-pressure hydrogen cylinder, and a variable water storage chamber is formed between the outer shell and the built-in rubber bag. When water supply is needed, the low-pressure gas enters the variable gas storage chamber from the low-pressure gas flow channel, and then squeezes the adjacent variable water storage chamber, so that the water in the variable water storage chamber enters the lower-level water supply system from the water outlet; when gas supply is needed, the electric control valve is opened, and the high-pressure gas in the high-pressure hydrogen cylinder enters the lower-level gas supply system through the high-pressure gas flow channel, thereby realizing the water supply and gas supply functions in one group of tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the invention and do not constitute a limitation of the invention. In the accompanying drawings:

[0019] Figure 1 is a cross-sectional view of the integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system of the invention at a first viewing angle;

[0020] Figure 2 yes Figure 1 A magnified view at point A;

[0021] Figure 3 yes Figure 2 Enlarged view at B;

[0022] Figure 4 is a cross-sectional view of the integrated high-pressure hydrogen storage and water supply device for the underwater fuel cell system of the invention at a second viewing angle;

[0023] Figure 5 yes Figure 4 Enlarged view at C;

[0024] Figure 6 The overall structure diagram of the integrated high-pressure hydrogen storage and water supply device for the underwater fuel cell system invented

[0025] In the figure: outer shell 1, water outlet 11, first shell 13, tail shell 14, built-in rubber bag 2, convex part 21, high-pressure hydrogen cylinder 3, capped round sleeve 31, sealing ring groove 312, sealing ring 315, inlet and outlet metal nozzle 32, low-pressure gas flow channel 321, high-pressure gas flow channel 322, annular groove 33, flange 34, variable gas storage chamber 36, variable water storage chamber 37, low-pressure air pipe 41, high-pressure air pipe 42. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the invention belongs. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] like Figures 1 to 6 As shown, the integrated high-pressure hydrogen storage and water supply device for the underwater fuel cell system includes, from the inside to the outside, a high-pressure hydrogen cylinder 3, a built-in rubber bag 2, and a housing 1;

[0030] The tail end of the high-pressure hydrogen cylinder 3 is covered with a capped round sleeve 31, and the head end of the high-pressure hydrogen cylinder 3 is fixedly connected with an air inlet and outlet metal nozzle 32;

[0031] In this embodiment, convex parts 21 are constructed at both ends of the built-in rubber bag 2, and annular embedded grooves 33 corresponding to the convex parts 21 are constructed on the capped round sleeves 31 and the inlet and outlet metal nozzles 32 respectively arranged at both ends of the high-pressure hydrogen cylinder 3. The inner side of the tail end of the built-in rubber bag 2 is wedged with the capped round sleeve 31, and the outer side of the tail end of the built-in rubber bag 2 is abutted with the outer shell 1. The capped round sleeve 31 is tightly connected with the outer shell 1, and the built-in rubber bag 2 and the outer shell 1 are pressed by the capped round sleeve 31, so that the convex part 21 of the built-in rubber bag 2 and the annular embedded groove 33 of the capped round sleeve 31 are kept in an embedded state, so that the tail end sealing between the high-pressure hydrogen cylinder 3, the built-in rubber bag 2, and the outer shell 1 is achieved;

[0032] The inner side of the head end of the built-in rubber bag 2 is also wedged with the inlet and outlet metal nozzle 32 through the convex part 21 and the annular embedded groove 33, the outer side of the head end of the built-in rubber bag 2 is abutted with the outer shell 1, the metal nozzle locking piece is tightly connected with the inlet and outlet metal nozzle 32 and abuts with the outer side of the outer shell 1, and the outer shell 1, the built-in rubber bag 2 and the inlet and outlet metal nozzle 32 are pressed by the metal nozzle locking piece, so that the convex part 21 of the built-in rubber bag 2 and the annular embedded groove 33 on the inlet and outlet metal nozzle 32 are kept in an embedded state, so as to realize the head end sealing among the high-pressure hydrogen cylinder 3, the built-in rubber bag 2 and the outer shell 1;

[0033] Through the above sealing structure, a variable gas storage cavity 36 is formed between the built-in rubber bag 2 and the high-pressure hydrogen bottle 3, and a variable water storage cavity 37 is formed between the shell 1 and the built-in rubber bag 2. The shell 1 is provided with a water outlet 11. The low-pressure gas flow channel 321 in the inlet and outlet metal nozzle 32 is connected to the variable gas storage cavity 36, and the high-pressure gas flow channel 322 in the inlet and outlet metal nozzle 32 is connected to the inner cavity of the high-pressure hydrogen bottle 3. The low-pressure gas flow channel 321 and the high-pressure gas flow channel 322 are not connected to each other and are independent gas flow channels.

[0034] When water supply is needed, low-pressure gas enters the variable gas storage chamber 36 from the low-pressure gas flow channel 321, causing the volume of the variable gas storage chamber 36 to expand, thereby squeezing the adjacent variable water storage chamber 37, and allowing the water in the variable water storage chamber 37 to enter the lower-level water supply system from the water outlet 11; when gas supply is needed, the electric control valve is opened, and the high-pressure gas in the high-pressure hydrogen cylinder 3 enters the lower-level gas supply system through the high-pressure gas flow channel 322, thereby achieving both water supply and gas supply functions in one group of tanks, and greatly reducing the space occupied.

[0035] Specifically, the shell 1 includes a first shell section 13 and a tail shell section 14. After the tail end and the head end of the high-pressure hydrogen cylinder 3, the built-in rubber bag 2, and the shell 1 are sealed and assembled, the first shell section 13 and the tail shell section 14 are butt-welded.

[0036] Specifically, the outer wall of the capped round sleeve 31 is configured with an external thread, and the corresponding inner wall of the outer shell 1 is configured with an internal thread, so that the capped round sleeve 31 and the outer shell 1 are fastened by a threaded connection.

[0037] Specifically, the metal nozzle locking member is a flange 34, the inner circumference of the flange 34 is configured with an internal thread, and the outer circumference of the corresponding intake and exhaust metal nozzle 32 is configured with an external thread, and the flange 34 and the intake and exhaust metal nozzle 32 are fastened by threaded connection.

[0038] Specifically, a sealing ring groove 312 is constructed on the inner circumferential surface of the capped circular sleeve 31, and a sealing ring 315 is also mounted on the tail end of the high-pressure hydrogen cylinder 3. The sealing ring 315 abuts between the sealing ring groove 312 and the tail end of the high-pressure hydrogen cylinder 3, thereby achieving sealing between the tail end of the high-pressure hydrogen cylinder 3 and the capped circular sleeve 31.

[0039] Specifically, the inlet and outlet ports of the low-pressure gas flow channel 321 and the inlet and outlet ports of the high-pressure gas flow channel 322 are respectively connected to a low-pressure gas pipe 41 and a high-pressure gas pipe 42. The low-pressure gas pipe 41 is connected to a low-pressure gas supply device, and the high-pressure gas pipe 42 is connected to an electric control valve, thereby realizing the inlet and outlet of high and low pressure gases.

[0040] The working principle and working process of the invention are as follows:

[0041] When water supply is needed, low-pressure gas passes through the low-pressure air duct 41 and the low-pressure gas flow channel 321 into the variable air storage chamber 36, causing the volume of the variable air storage chamber 36 to expand, thereby squeezing the adjacent variable water storage chamber 37, and allowing the water in the variable water storage chamber 37 to enter the lower-level water supply system from the water outlet 11; when gas supply is needed, the electric control valve is opened, and the high-pressure gas in the high-pressure hydrogen cylinder 3 enters the lower-level gas supply system from the high-pressure air duct 42 through the high-pressure gas flow channel 322.

[0042] The above embodiments of the invention are described in detail, but the contents are only preferred embodiments of the invention and cannot be considered to limit the scope of implementation of the invention. All equivalent changes and improvements made within the scope of the invention should still fall within the scope of this patent.

Claims

1. An integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system, characterized in that: It includes, from inside to outside, a high-pressure hydrogen cylinder (3), a built-in rubber bag (2), and an outer shell (1); The tail end of the high-pressure hydrogen cylinder (3) is sleeved with a capped round sleeve (31), and the head end of the high-pressure hydrogen cylinder (3) is fixedly connected with an air inlet and outlet metal nozzle (32); The inner side of the tail end of the built-in rubber bag (2) is wedged with the capped round sleeve (31), the outer side of the tail end of the built-in rubber bag (2) is abutted against the outer shell (1), and the capped round sleeve (31) is tightly connected to the outer shell (1); The inner side of the head end of the built-in rubber bag (2) is wedged with the inlet and outlet metal nozzle (32), the outer side of the head end of the built-in rubber bag (2) is abutted with the outer shell (1), and the metal nozzle locking piece is tightly connected to the inlet and outlet metal nozzle (32) and abutted with the outer shell (1); A variable gas storage chamber (36) is formed between the built-in rubber bag (2) and the high-pressure hydrogen bottle (3), a variable water storage chamber (37) is formed between the outer shell (1) and the built-in rubber bag (2), a water outlet (11) is provided on the outer shell (1), a low-pressure gas flow channel (321) in the inlet and outlet metal nozzle (32) is connected to the variable gas storage chamber (36), and a high-pressure gas flow channel (322) in the inlet and outlet metal nozzle (32) is connected to the inner cavity of the high-pressure hydrogen bottle (3).

2. The integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system according to claim 1, characterized in that: The outer shell (1) comprises a first shell section (13) and a tail shell section (14) which are butt-welded.

3. The integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system according to claim 1, characterized in that: The outer wall of the capped circular sleeve (31) is provided with an external thread, and the corresponding inner wall of the outer shell (1) is provided with an internal thread.

4. The integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system according to claim 1, characterized in that: The metal nozzle locking piece is a flange (34), the inner circumferential surface of the flange (34) is provided with an internal thread, and the outer circumferential surface of the corresponding intake and exhaust metal nozzle (32) is provided with an external thread.

5. The integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system according to claim 1, characterized in that: A sealing ring groove (312) is constructed on the inner circumferential surface of the capped circular sleeve (31), and a sealing ring (315) is also sleeved on the tail end of the high-pressure hydrogen cylinder (3), wherein the sealing ring (315) abuts between the sealing ring groove (312) and the tail end of the high-pressure hydrogen cylinder (3).

6. The integrated high-pressure hydrogen storage and water supply device for an underwater fuel cell system according to claim 1, characterized in that: The inlet and outlet ports of the low-pressure gas flow channel (321) and the inlet and outlet ports of the high-pressure gas flow channel (322) are respectively connected to a low-pressure gas pipe (41) and a high-pressure gas pipe (42).

7. The pipeline sealing mechanism for water storage and supply equipment according to claim 1, characterized in that: The inlet and outlet metal nozzle (32) comprises a mounting seat (323) and a high-pressure pipe connector (324) and a low-pressure connector (325) integrally arranged with the mounting seat (323).

8. The pipeline sealing mechanism for water storage and supply equipment according to claim 7, characterized in that: The first port of the low-pressure gas flow channel (321) is located on the side wall of the mounting seat (323), and the second port of the low-pressure gas flow channel (321) is located on the side wall of the low-pressure connector (325); The first port of the high-pressure gas flow channel (322) is located at the bottom of the high-pressure pipe connector (324), and the second port of the high-pressure gas flow channel (322) is located on the side wall of the high-pressure pipe connector (324).

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