Hydrogen compression, storage and supply system

Abstract

The utility model discloses a hydrogen compression, storage and supply system which comprises a low-pressure hydrogen storage tank used for being communicated with a low-pressure hydrogen source, a medium-pressure hydrogen spherical tank used for being communicated with a medium-pressure hydrogen source and a first reciprocating compressor used for pressurizing, and the low-pressure hydrogen storage tank is provided with a low-pressure pipeline used for being communicated with a low-pressure hydrogen user side. The medium-pressure hydrogen source is communicated with the medium-pressure hydrogen spherical tank through a first medium-pressure pipeline; the low-pressure pipeline is connected with the first medium-pressure pipeline through the first reciprocating compressor so that low-pressure hydrogen in the low-pressure pipeline can be pressurized and conveyed to the first medium-pressure pipeline, and the medium-pressure hydrogen spherical tank is provided with a second medium-pressure pipeline used for being communicated with a medium-pressure hydrogen user side, so that hydrogen with different hydrogen pressures can be supplied. Therefore, user sides with different hydrogen pressure requirements can be matched.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen storage, in particular to a hydrogen compression storage and supply system. Background Art

[0002] Hydrogen is a green energy source, and there are many hydrogen production processes, such as fossil fuel hydrogen production (coal-to-hydrogen, natural gas-to-hydrogen or methanol-to-hydrogen), industrial by-product exhaust gas purification of hydrogen, water electrolysis hydrogen production or biological hydrogen production. Different hydrogen production processes supply different hydrogen pressures. Therefore, it is difficult for a single hydrogen production process to supply hydrogen that meets the different hydrogen pressure requirements of users. Utility Model Content

[0003] Therefore, in order to solve the above problems, the present invention provides a hydrogen compression storage and supply system capable of supplying hydrogen at different hydrogen pressures.

[0004] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0005] The utility model provides a hydrogen compression storage and supply system, comprising a low-pressure hydrogen storage tank for connecting to a low-pressure hydrogen source, a medium-pressure hydrogen ball tank for connecting to a medium-pressure hydrogen source, and a first reciprocating compressor for pressurizing; the low-pressure hydrogen storage tank is provided with a low-pressure pipeline for connecting to a low-pressure hydrogen user end, and the medium-pressure hydrogen source is connected to the medium-pressure hydrogen ball tank through a first medium-pressure pipeline; the low-pressure pipeline is connected to the first medium-pressure pipeline through the first reciprocating compressor, so that the low-pressure hydrogen in the low-pressure pipeline is pressurized and transported to the first medium-pressure pipeline; the medium-pressure hydrogen ball tank is provided with a second medium-pressure pipeline for connecting to a medium-pressure hydrogen user end.

[0006] Furthermore, it also includes a second reciprocating compressor, a diaphragm compressor for boosting, and a high-pressure hydrogen pipe bundle for storing hydrogen; the low-pressure pipeline is connected to the air inlet of the second reciprocating compressor, the air outlet of the second reciprocating compressor is connected to the air inlet of the diaphragm compressor through a first connecting pipeline, the first connecting pipeline is connected to the first medium-pressure pipeline through a second connecting pipeline, the air outlet of the diaphragm compressor is connected to the air inlet of the high-pressure hydrogen pipe bundle, and the air outlet of the high-pressure hydrogen pipe bundle is used to connect to the high-pressure hydrogen user end.

[0007] Furthermore, a third connecting pipe is provided between the gas outlet of the high-pressure hydrogen pipe bundle and the first medium-pressure pipe, and a first valve assembly is mounted on the third connecting pipe.

[0008] Furthermore, the first valve assembly includes a first ball valve and a first flow regulating valve.

[0009] Furthermore, a fourth connecting pipe is provided between the low-pressure pipe and the first medium-pressure pipe, and a second valve assembly is assembled on the fourth connecting pipe.

[0010] Furthermore, the second valve assembly includes a second ball valve and a second flow regulating valve.

[0011] The technical solution provided by the utility model has the following beneficial effects:

[0012] By integrating a low-pressure hydrogen storage tank for connecting to a low-pressure hydrogen source, a medium-pressure hydrogen ball tank for connecting to a medium-pressure hydrogen source, the first medium-pressure pipeline arranged between the medium-pressure hydrogen source and the medium-pressure hydrogen ball tank, and the second medium-pressure pipeline for connecting to a medium-pressure hydrogen user end into the same hydrogen compression, storage and supply system, hydrogen storage and supply of multiple hydrogen pressures can be achieved. The low-pressure hydrogen in the low-pressure pipeline is then pressurized by the first reciprocating compressor and transported to the first medium-pressure pipeline to achieve conversion of the low-pressure hydrogen in the low-pressure pipeline into medium-pressure hydrogen, thereby ensuring that medium and low-pressure hydrogen can be supplied at the same time, thereby matching user ends with different hydrogen pressure requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Shown is a connection diagram of a hydrogen compression storage and supply system in an embodiment. DETAILED DESCRIPTION

[0014] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0015] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0016] Reference Figure 1 As shown, this embodiment provides a hydrogen compression storage and supply system, including a low-pressure hydrogen storage tank 6 for connecting to a low-pressure hydrogen source 1, a medium-pressure hydrogen ball tank 7 for connecting to a medium-pressure hydrogen source 2, and a first reciprocating compressor 8 for pressurization. The low-pressure hydrogen storage tank 6 is provided with a low-pressure pipeline 13 for connecting to a low-pressure hydrogen user end 3. The medium-pressure hydrogen source 2 is connected to the medium-pressure hydrogen ball tank 7 through a first medium-pressure pipeline 12. The low-pressure pipeline 13 is connected to the first medium-pressure pipeline 12 through the first reciprocating compressor 8 to pressurize the low-pressure hydrogen in the low-pressure pipeline 13 and transport it to the first medium-pressure pipeline 12. The medium-pressure hydrogen ball tank 7 is provided with a second medium-pressure pipeline 20 for connecting to a medium-pressure hydrogen user end 4.

[0017] In this embodiment, the number of the first reciprocating compressors 8 is two. Of course, the number of the first reciprocating compressors 8 can also be one or three or more.

[0018] By integrating the low-pressure hydrogen storage tank 6 for connecting to the low-pressure hydrogen source 1, the medium-pressure hydrogen ball tank 7 for connecting to the medium-pressure hydrogen source 2, the first medium-pressure pipeline 12 arranged between the medium-pressure hydrogen source 2 and the medium-pressure hydrogen ball tank 7, and the second medium-pressure pipeline 20 for connecting to the medium-pressure hydrogen user end 4 into the same hydrogen compression storage and supply system, hydrogen storage and supply of multiple hydrogen pressures can be achieved.

[0019] The low-pressure hydrogen in the low-pressure pipeline 13 is then pressurized by the first reciprocating compressor 8 and transported to the first medium-pressure pipeline 12, so as to convert the low-pressure hydrogen in the low-pressure pipeline 13 into medium-pressure hydrogen, that is, to ensure that medium and low-pressure hydrogen can be supplied at the same time, and then match the user ends with different hydrogen pressure requirements, so as to meet the use of multiple scenarios under different hydrogen pressure requirements.

[0020] In another preferred embodiment, the hydrogen compression, storage and supply system of this embodiment also includes a second reciprocating compressor 9, a diaphragm compressor 10 for boosting, and a high-pressure hydrogen pipe bundle 11 for storing hydrogen. The low-pressure pipeline 13 is connected to the air inlet of the second reciprocating compressor 9, and the air outlet of the second reciprocating compressor 9 is connected to the air inlet of the diaphragm compressor 10 through a first connecting pipeline 14. The first connecting pipeline 14 is connected to the first medium-pressure pipeline 12 through a second connecting pipeline 15. The air outlet of the diaphragm compressor 10 is connected to the air inlet of the high-pressure hydrogen pipe bundle 11, and the air outlet of the high-pressure hydrogen pipe bundle 11 is used to connect to the high-pressure hydrogen user end 5.

[0021] When the external low-pressure hydrogen supply end is in stable operation and the hydrogen production is large, the excess low-pressure hydrogen is transported to the second reciprocating compressor 9 through the low-pressure pipeline 13 in sequence to convert the low-pressure hydrogen into medium-pressure hydrogen, and then the converted medium-pressure hydrogen is transported to the diaphragm compressor 10 to pressurize the medium-pressure hydrogen and convert it into high-pressure hydrogen, and then the converted high-pressure hydrogen is compressed and stored in the high-pressure hydrogen pipe bundle 11.

[0022] When the external medium-pressure hydrogen supply end is in stable operation and the hydrogen production is large, the excess medium-pressure hydrogen is transported to the first connecting pipe 14 through the first medium-pressure pipeline 12 and the second connecting pipe 15 in sequence, and then transported to the diaphragm compressor 10 through the first connecting pipe 14. The medium-pressure hydrogen from the medium-pressure hydrogen supply end is then converted into high-pressure hydrogen, compressed and stored in the high-pressure hydrogen pipe bundle 11.

[0023] This not only avoids hydrogen waste, but also allows hydrogen to be used for peak regulation to solve the problem of unstable hydrogen supply caused by intermittent and fluctuating hydrogen production, thereby overcoming the supply and demand contradictions between the hydrogen production supply end and the low, medium and high pressure user ends.

[0024] Further preferably, a third connecting pipe 16 is provided between the gas outlet of the high-pressure hydrogen tube bundle 11 and the first medium-pressure pipeline 12, and a first valve assembly 18 is assembled on the third connecting pipe 16. Specifically, the first valve assembly 18 includes a first ball valve and a first flow regulating valve, and when the hydrogen supply of the medium-pressure hydrogen source 2 is insufficient, the first valve assembly 18 is opened to transport the high-pressure hydrogen stored in the high-pressure hydrogen tube bundle 11 to the first medium-pressure pipeline 12 for medium-pressure hydrogen storage in the medium-pressure hydrogen ball tank 7, thereby achieving a stable supply of medium-pressure hydrogen to the user end 4.

[0025] In another preferred embodiment, a fourth connecting pipe 17 is provided between the low-pressure pipe 13 and the first medium-pressure pipe 12, and a second valve assembly 19 is assembled on the fourth connecting pipe 17. Specifically, the second valve assembly 19 includes a second ball valve and a second flow regulating valve. When the hydrogen supply of the low-pressure hydrogen source 1 is insufficient, the second valve assembly 19 is opened to transport the medium-pressure hydrogen in the first medium-pressure pipe 12 to the low-pressure pipe 13. The first valve assembly 18 can also be opened to transport the hydrogen stored in the high-pressure hydrogen pipe bundle 11 to the low-pressure pipe 13 through the third connecting pipe 16 and the first medium-pressure pipe 12. Both can be used for low-pressure hydrogen storage tank 6 to store low-pressure hydrogen, while achieving a stable supply of low-pressure hydrogen to the user end 3.

[0026] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A hydrogen compression storage and supply system, characterized by: It includes a low-pressure hydrogen storage tank for connecting to a low-pressure hydrogen source, a medium-pressure hydrogen spherical tank for connecting to a medium-pressure hydrogen source, and a first reciprocating compressor for pressurization; The low-pressure hydrogen storage tank is provided with a low-pressure pipeline for connecting to a low-pressure hydrogen user end, and the medium-pressure hydrogen source is connected to the medium-pressure hydrogen spherical tank via a first medium-pressure pipeline; The low-pressure pipeline is connected to the first medium-pressure pipeline through the first reciprocating compressor, so that the low-pressure hydrogen in the low-pressure pipeline is pressurized and transported to the first medium-pressure pipeline; The medium-pressure hydrogen gas spherical tank is provided with a second medium-pressure pipeline for communicating with a medium-pressure hydrogen user end.

2. The hydrogen compression storage and supply system according to claim 1, characterized in that: It also includes a second reciprocating compressor, a diaphragm compressor for boosting, and a high-pressure hydrogen pipe bundle for storing hydrogen; the low-pressure pipeline is connected to the air inlet of the second reciprocating compressor, the air outlet of the second reciprocating compressor is connected to the air inlet of the diaphragm compressor through a first connecting pipeline, the first connecting pipeline is connected to the first medium-pressure pipeline through a second connecting pipeline, the air outlet of the diaphragm compressor is connected to the air inlet of the high-pressure hydrogen pipe bundle, and the air outlet of the high-pressure hydrogen pipe bundle is used to connect to the high-pressure hydrogen user end.

3. The hydrogen compression storage and supply system according to claim 2, characterized in that: A third connecting pipe is provided between the gas outlet of the high-pressure hydrogen pipe bundle and the first medium-pressure pipe, and a first valve assembly is mounted on the third connecting pipe.

4. The hydrogen compression storage and supply system according to claim 3, characterized in that: The first valve assembly includes a first ball valve and a first flow regulating valve.

5. The hydrogen compression, storage and supply system according to any one of claims 1 to 4, characterized in that: A fourth connecting pipe is provided between the low-pressure pipe and the first medium-pressure pipe, and a second valve assembly is mounted on the fourth connecting pipe.

6. The hydrogen compression storage and supply system according to claim 5, characterized in that: The second valve assembly includes a second ball valve and a second flow regulating valve.

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