CN115164086A - Container for storing high-pressure hydrogen - Google Patents

Container for storing high-pressure hydrogen Download PDF

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Publication number
CN115164086A
CN115164086A CN202210696849.1A CN202210696849A CN115164086A CN 115164086 A CN115164086 A CN 115164086A CN 202210696849 A CN202210696849 A CN 202210696849A CN 115164086 A CN115164086 A CN 115164086A
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China
Prior art keywords
pressure
hydrogen
cavity
layer
container
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Pending
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CN202210696849.1A
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Chinese (zh)
Inventor
胡庆均
刘博文
陈崇刚
赵予川
晁君瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Engineering Group Co Ltd
Sinopec Guangzhou Engineering Co Ltd
Original Assignee
China Petroleum and Chemical Corp
Sinopec Engineering Group Co Ltd
Sinopec Guangzhou Engineering Co Ltd
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Application filed by China Petroleum and Chemical Corp, Sinopec Engineering Group Co Ltd, Sinopec Guangzhou Engineering Co Ltd filed Critical China Petroleum and Chemical Corp
Priority to CN202210696849.1A priority Critical patent/CN115164086A/en
Publication of CN115164086A publication Critical patent/CN115164086A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F17C2205/0149—Vessel mounted inside another one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/036—Very high pressure, i.e. above 80 bars
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a container for storing high-pressure hydrogen, which mainly comprises a plurality of layers of sealed cavities which are nested layer by layer, wherein each cavity comprises a cylindrical barrel and end sockets at two sides of the cylindrical barrel; the cavities nested layer by layer from inside to outside form a plurality of mutually independent pressure cavities, the hydrogen storage pressure of each pressure cavity is reduced layer by layer from inside to outside, and each pressure cavity only bears the internal and external pressure difference of the pressure cavity. The invention fully utilizes the pressure balance, balances the storage pressure with higher pressure grade through a part of the storage pressure, not only solves the problem of large-volume high-pressure hydrogen storage, but also reduces the cost of the hydrogen storage container.

Description

Container for storing high-pressure hydrogen
Technical Field
The invention relates to the field of hydrogen energy storage, in particular to high-pressure hydrogen storage and high-pressure hydrogen storage with different pressure grades, and particularly relates to a container for storing high-pressure hydrogen.
Background
The hydrogen energy has the advantages of clean fuel products, high combustion efficiency, renewability and the like, is considered as the most important secondary energy at the present stage and is also considered as an ideal energy source for replacing the traditional fuel. The key point of hydrogen energy utilization lies in hydrogen storage technology, and the existing hydrogen storage technology mainly comprises three technologies of gaseous hydrogen storage, liquid hydrogen storage and solid hydrogen storage.
Gaseous hydrogen storage is widely used in hydrogen storage due to its advantages of simple equipment, convenience in compressing hydrogen, quick charging and discharging, etc. The gaseous hydrogen storage container mainly adopts a high-strength steel high-pressure gas cylinder and a hydrogen storage container.
Due to manufacturing limitations, hydrogen storage cylinders have disadvantages such as small storage volumes and complex manufacturing. The traditional high-pressure container has a simple structure, but due to high pressure and the reason of being limited by materials, high-pressure hydrogen embrittlement, welding and the like, the thickness of a shell of the equipment cannot be too thick, the diameter cannot be designed to be too large under a certain storage pressure condition, and correspondingly, the volume of the container cannot be too large, for example, the volume of the container for storing 50Mpa hydrogen is 10m at most at present 3 About, the maximum volume of the container for storing 90Mpa hydrogen is 1m 3 Left and right.
Disclosure of Invention
In order to solve the problem that the high-pressure hydrogen storage container in the prior art is difficult to enlarge, the invention provides a container for storing high-pressure hydrogen, which can realize the enlargement of the high-pressure hydrogen storage container.
The container for storing high-pressure hydrogen provided by the invention mainly comprises a plurality of layers of closed cavities which are nested layer by layer from inside to outside, each cavity consists of a cylindrical barrel and end sockets on two sides of the cylindrical barrel, the cavities are supported and fixed with each other through the cavity, each cavity is provided with an opening as a hydrogen inlet and outlet of the cavity, the hydrogen inlets and outlets of the cavities except the outermost cavity are fixedly connected with curved hydrogen lead pipes without leakage, each hydrogen lead pipe penetrates through each cavity on the path to extend to the outside of the outermost cavity, and each hydrogen lead pipe is fixedly connected with each corresponding penetrated cavity without leakage; the cavities nested layer by layer from inside to outside form a plurality of mutually independent pressure cavities, the hydrogen storage pressure of each pressure cavity is reduced layer by layer from inside to outside, the absolute hydrogen storage pressure of the innermost pressure cavity is the highest, and each pressure cavity only bears the internal and external pressure difference of the pressure cavity.
In order to facilitate the manufacture and the hydrogen discharge, as an improvement, the hydrogen inlet and the hydrogen outlet on each cavity except the outermost cavity are uniformly arranged on the cavity sealing heads on the same side, and the hydrogen inlet and the hydrogen outlet on the outermost cavity are arranged on the cylinder body or the sealing heads.
As a further improvement, each hydrogen leading pipe penetrates through the end sockets of the cavities on the same side to extend out of the outermost layer of cavity in a substantially parallel state. The function of the bent hydrogen connecting pipe is as follows: the hydrogen connecting pipes connected between the cavities are bent pipes, so that not only can additional loads caused by manufacturing deviation between the cavities be compensated, but also temperature loads caused by small temperature difference existing between the cavities in the operation process can be compensated.
As a further improvement, the planes of the seal head weld lines on the sides of the cavities far away from the hydrogen inlet and the hydrogen outlet are close to each other, and the planes of the seal head weld lines are preferably overlapped together. The seal head weld lines are close to each other as much as possible, so that enough gaps can be ensured for nesting operation of each cavity, and subsequent welding and quality detection or heat treatment can be smoothly completed.
When the horizontal type placing device is adopted, the supporting among the cavities can be supported by arc plates welded among the cavities; when the vertical type storage rack is used for vertical type storage, the supporting between the cavities can adopt skirt type supporting to support the cavities. Of course, the inter-chamber support may also take other suitable forms, and the inter-chamber support should not limit the circulation of the stored gas while performing the supporting function.
The invention has the following advantages:
1) The internal pressure in each pressure cavity is self-balanced by utilizing the pressure of the storage medium of each pressure cavity, so that the load borne by each cavity is relatively reduced, and the maximum thickness of the container can be reduced in proportion to the borne load compared with the traditional container, and the equipment investment is reduced;
2) By adopting a multi-cavity structure, the thickness of the container shell can be reduced, so that the manufacturing difficulty is reduced, and the safety of equipment is correspondingly improved;
3) Because the load born by the innermost cavity is greatly reduced through the self-balance of the pressure, the diameter of the innermost cavity can be correspondingly increased, the volume of the storable high-pressure part is increased by the proportion of being square times of the diameter, and the problem of large size of the conventional high-pressure hydrogen storage container is solved;
4) The nested pressure cavities form a whole, and the hydrogen storage at different pressure levels can be realized.
Drawings
FIG. 1 is a schematic view of a container according to the present invention.
In the figure: 1-inner side cavity, 2-middle cavity, 3-outer layer cavity, 4-first hydrogen inlet and outlet, 5-second hydrogen inlet and outlet, 6-third hydrogen inlet and outlet, 7-first hydrogen connecting lead pipe, 8-second hydrogen connecting lead pipe, 9-inter-cavity support, 10-inner side pressure cavity, 11-middle pressure cavity and 12-outer layer pressure cavity;
d 1-the diameter of the cylinder of the inner cavity, d 2-the diameter of the cylinder of the middle cavity, d 3-the diameter of the cylinder of the outer cavity, L1-the length of the cylinder of the inner cavity, L2-the length of the cylinder of the middle cavity, and L3-the length of the cylinder of the outer cavity.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The number of layers of the cavity of the container can be determined based on the highest pressure and economy of the stored hydrogen, and the number of layers can be theoretically unlimited. However, in consideration of the requirements of manufacturing and use in engineering, the cavity generally has a 2-5-layer structure. When the highest pressure for storing hydrogen is about 50Mpa, a double-layer structure is preferably adopted; when the highest pressure for storing hydrogen is about 100Mpa, a three-layer structure is preferably adopted; when the highest pressure for storing hydrogen is about 200MPa, a four-layer or five-layer structure is preferably adopted.
Fig. 1 is a schematic structural diagram of the present invention using three-layer chambers.
As can be seen from the figure, the container for storing high-pressure hydrogen comprises an inner cavity 1, a middle cavity 2 and an outer cavity 3 which are nested layer by layer from inside to outside, the cavities are mutually fixed through supports 9 among the cavities, and seal head weld lines on the right sides of the cavities are in the same plane.
A first hydrogen inlet and outlet 4 is arranged on the left end socket of the inner cavity 1, a first bent hydrogen lead pipe 7 is fixedly connected to the first hydrogen inlet and outlet 4, and the first hydrogen lead pipe 7 penetrates through the left end socket of the middle cavity 2 and the left end socket of the outer cavity 3 and extends to the outside of the outer cavity 3; a second hydrogen inlet and outlet 5 is formed in the left end socket of the middle cavity 2, a bent second hydrogen connecting lead pipe 8 is fixedly connected to the second hydrogen inlet and outlet 5, and the second hydrogen connecting lead pipe 8 penetrates through the left end socket of the outer cavity 3 and extends out of the outer cavity 3; a third hydrogen inlet and outlet 6 is arranged on the cylinder body of the outer-layer cavity 3; and the hydrogen leading pipes and the corresponding penetrated cavities form a fixed connection without leakage.
The inner space of the inner chamber 1 forms an inner pressure chamber 10, the annular space between the inner chamber 1 and the intermediate chamber 2 forms an intermediate pressure chamber 11, and the annular space between the intermediate chamber 2 and the outer chamber 3 forms an outer pressure chamber 12.
The method of manufacturing the container shown in fig. 1 is as follows:
the inner cavity 1, the middle cavity 2 and the outer cavity 3 can be manufactured respectively. When the middle cavity 2 and the outer cavity 3 are manufactured, one side of the end socket is kept to be not welded with the cylinder body temporarily, and the inner cavity 1 to be inspected is placed into the middle cavity 2 through the inter-cavity support 9 and then is subjected to end socket welding and inspection detection; the outer cavity 3 adopts the same installation method, namely the middle cavity 2 is put into the outer cavity 3 after the inspection and detection is finished, and then the end enclosure of the outer cavity 3 is welded and the container is integrally inspected and detected. Note that, at the time of manufacturing, the following two points should be considered:
1) When the hydrogen lead pipe is installed, the position of the hole on the cavity is noticed to ensure that the hydrogen lead pipe is smoothly led out from the cavity;
2) The positions of seal line lines of the end sockets on one side of each cavity far away from the hydrogen inlet and the hydrogen outlet are close to each other as much as possible, so that enough gaps are ensured for nesting, and the follow-up welding and quality detection or heat treatment can be completed.
The use method of the container shown in figure 1 is as follows:
in order to ensure pressure balance, the hydrogen is filled and discharged step by step;
the working pressure of the inner pressure chamber 10 is P 1 The working pressure of the intermediate pressure chamber 11 is P 2 The working pressure of the outer pressure chamber 12 is P 3 And P is 1 >P 2 >P 3 。
First, the three pressure chambers are filled simultaneously, when the working pressure reaches P 3 At this point, the filling of the outer pressure chamber 12 is stopped and the filling of the inner pressure chamber 10 and the intermediate pressure chamber 11 is continued until the operating pressure of the intermediate pressure chamber 11 reaches P 2 At this point, the filling of the intermediate pressure chamber 11 is stopped and the filling of the inner pressure chamber 10 is continued until the working pressure P is reached 1 Until the end;
when the pressure is released, the inner pressure chamber 10 should be released first, and when the pressure in the inner pressure chamber 10 is released to P 2 At this time, the intermediate pressure chamber 11 starts to be released, and the intermediate pressure chamber 11 is pressure-released to P 3 The outer chamber 12 is then vented and the next cycle begins. Of course, the pressure difference between two adjacent cavities can be controlled to be smaller than a designed value during discharging based on the actual discharging amount.
The advantages of the present invention over conventional structures are illustrated in the following specific embodiments in conjunction with fig. 1:
design description:
P di ＝k(P i -P i+1 )
P di : the design pressure of each pressure chamber;
P i : working pressure of the ith pressure chamber;
P i+1 : the working pressure of the pressure chamber adjacent to the outer side of the ith pressure chamber;
k: the adjustment coefficient is usually 1.05 to 1.1.
Under the general conditions: p di >P di+1 ，P di ＝(1.2～2.5)P di+1
Accordingly, P d1 、P d2 And P d3 Design pressures, P, for the inner pressure chamber 10, the intermediate pressure chamber 11 and the outer pressure chamber 12, respectively d1 ＝k(P 1 -P 2 )，P d2 ＝k(P 2 -P 3 )，P d3 ＝kP 3 。
Example 1:
1) For a vessel storing hydrogen at a pressure of 90MPa, the design pressure is typically 95MPa. When a conventional single-layer cavity structure is adopted, the thickness of the cylinder is generally controlled below 300mm due to material and manufacturing limitations, and accordingly, the storage volume is about 1m in the case of a container diameter d =700mm and l =2100mm 3 The thickness of the equipment shell is 280mm, the weight of metal is 18.4t, and the mass of hydrogen stored at 90MPa is about 53kg. Metal consumption per unit mass of hydrogen stored: 347.17kg/kgH 2 。
2) If the three-layer chamber structure shown in FIG. 1 is adopted, the inner pressure chamber 10 stores P 1 Hydrogen gas of =90MPa, the intermediate pressure chamber 11 stores P 2 Hydrogen gas of 50Mpa, and the outer pressure chamber 12 stores P 3 Hydrogen gas of 20 MPa. The designed internal pressures of the three pressure chambers are respectively P d1 ＝44MPa，P d2 ＝33MPa，P d3 =22MPa (k = 1.1). The diameter of each cavity is respectively d1=1400mm, d2=2000mm and d3=2700mm from inside to outside, and the length is respectively L1=2100mm, L2=3500mm and L3=5500mm.
From the preliminary estimates, the results of Table 1 can be obtained:
TABLE 1
Figure BDA0003702500790000051
From example 1 it can be seen that:
1) Based on the currentEngineering technical conditions, the container of the invention can enlarge the volume of the container for storing the hydrogen with the pressure of 90MPa to 5m while reducing the manufacturing difficulty 3 So that the size of the high-pressure hydrogen storage container is more easily increased;
2) Under the same material and the same storage pressure, the maximum thickness of the container of the invention is only 224mm, which is only 80 percent of that of the traditional single-layer container, the manufacture is easier, and the manufacture quality is more reliable.
Example 2:
based on example 1, according to the structure of the conventional single-layer container, three single-layer containers with the volume same as that of the inner pressure chamber 10, the middle pressure chamber 11 and the outer pressure chamber 12 in fig. 1 are respectively taken, and the volume of each of the three single-layer hydrogen storage containers is V 1 ＝4.94m 3 、V 2 ＝7.49m 3 、V 3 ＝19.37m 3 . On the premise that the design conditions respectively correspond to each other, according to the preliminary estimation, the results of table 2 can be obtained:
TABLE 2
Figure BDA0003702500790000052
This can be obtained by comparing table 1 with table 2:
1) Under the same conditions, the wall thickness of the container for storing the hydrogen with the pressure of 90MPa reaches 556mm, and the current engineering technology is difficult to implement;
2) The metal consumption of the container for storing the hydrogen with the pressure of 90MPa is obviously reduced compared with the metal consumption of the traditional container for storing the hydrogen, namely, the metal consumption is reduced from 336.03kg/kgH 2 Reduced to 107.16kg/kgH 2 . However, the consumption of storage metals for 50MPa and 20MPa hydrogen is increased, which shows that the container of the invention has great advantages in high-pressure hydrogen storage;
3) Under the condition of adopting the same material and the same storage pressure, the thickness of the shell of the cavity can be reduced by at least 30 percent under the condition that the container stores the same hydrogen quality in medium-high pressure hydrogen storage because of pressure self-balancing;
4) It can also be stated that the container of the present invention does not suggest storing only a single low-pressure hydrogen gas, and when storing hydrogen gas of multiple pressure levels, it is suggested that the storage volume of the low-pressure hydrogen gas should be reduced as much as possible, that is, the volume of the outermost chamber is reduced, and the metal consumption is reduced while achieving pressure balance.
The above examples are only illustrative, and in application, the storage pressure, diameter and volume of each pressure chamber of the container of the present invention can be optimally configured according to actual needs, so as to fully exert the advantages of the present invention.
The invention fully utilizes the pressure balance, balances the storage pressure with higher pressure grade through a part of the storage pressure, not only solves the difficult problem of large-volume high-pressure hydrogen storage, but also reduces the cost of the hydrogen storage container.

Claims (6)

1. A container for storing high pressure hydrogen gas, characterized by: the hydrogen gas inlet and outlet of each cavity except the outermost cavity are fixedly connected with a bent hydrogen gas leading pipe in a non-leakage manner, each hydrogen gas leading pipe penetrates through each cavity on the path of the hydrogen gas leading pipe and extends to the outside of the outermost cavity, and each hydrogen gas leading pipe is fixedly connected with each penetrated corresponding cavity in a non-leakage manner; the cavities nested layer by layer from inside to outside form a plurality of mutually independent pressure chambers, the hydrogen storage pressure of each pressure chamber is reduced layer by layer from inside to outside, the absolute hydrogen storage pressure of the innermost pressure chamber is the highest, and each pressure chamber only bears the internal and external pressure difference of the pressure chamber.
2. The container of claim 1, wherein: the hydrogen inlets and outlets on the cavities except the outermost cavity are uniformly arranged on the cavity sealing heads on the same side, and the hydrogen inlet and outlet on the outermost cavity is arranged on the cylinder or the sealing head.
3. The container of claim 2, wherein: and each hydrogen leading pipe penetrates through the end sockets of the cavities on the same side in a substantially parallel state and extends out of the outermost layer cavity.
4. A container according to claim 2 or 3, wherein: the planes of the seal head weld lines on the sides of the cavities far away from the hydrogen inlet and the hydrogen outlet are close to each other.
5. A container according to claim 2 or 3, wherein: the planes of the seal head weld lines on the side of each cavity far away from the hydrogen inlet and the hydrogen outlet are overlapped with each other.
6. A container according to any one of claims 1 to 3, wherein: the layer-by-layer nested closed cavities are 2-5 layers.
CN202210696849.1A 2022-06-20 2022-06-20 Container for storing high-pressure hydrogen Pending CN115164086A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050145378A1 (en) * 2002-07-22 2005-07-07 Toyota Jidosha Kabushiki Kaisha Hydrogen-storage container and method of occluding hydrogen
DE102016204073A1 (en) * 2016-03-11 2017-09-14 Bayerische Motoren Werke Aktiengesellschaft Pressure vessel system comprising a pressure vessel for storing gas
CN107228274A (en) * 2017-06-02 2017-10-03 浙江大学 Fixed vacuum multilayer insulation high pressure liquid hydrogen storage tank
CN109931495A (en) * 2019-04-09 2019-06-25 张家港富瑞氢能装备有限公司 Automobile-used liquid hydrogen storage insulated gas cylinder
CN111188995A (en) * 2020-03-16 2020-05-22 安徽伯华氢能源科技有限公司 Multi-stage high-pressure hydrogen storage container and hydrogen storage method
CN214369254U (en) * 2021-03-05 2021-10-08 上海大学绍兴研究院 Pressure vessel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050145378A1 (en) * 2002-07-22 2005-07-07 Toyota Jidosha Kabushiki Kaisha Hydrogen-storage container and method of occluding hydrogen
DE102016204073A1 (en) * 2016-03-11 2017-09-14 Bayerische Motoren Werke Aktiengesellschaft Pressure vessel system comprising a pressure vessel for storing gas
CN107228274A (en) * 2017-06-02 2017-10-03 浙江大学 Fixed vacuum multilayer insulation high pressure liquid hydrogen storage tank
CN109931495A (en) * 2019-04-09 2019-06-25 张家港富瑞氢能装备有限公司 Automobile-used liquid hydrogen storage insulated gas cylinder
CN111188995A (en) * 2020-03-16 2020-05-22 安徽伯华氢能源科技有限公司 Multi-stage high-pressure hydrogen storage container and hydrogen storage method
CN214369254U (en) * 2021-03-05 2021-10-08 上海大学绍兴研究院 Pressure vessel

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