CN115451324A - Protective cover and high-pressure hydrogen storage cylinder - Google Patents
Protective cover and high-pressure hydrogen storage cylinder Download PDFInfo
- Publication number
- CN115451324A CN115451324A CN202211112421.4A CN202211112421A CN115451324A CN 115451324 A CN115451324 A CN 115451324A CN 202211112421 A CN202211112421 A CN 202211112421A CN 115451324 A CN115451324 A CN 115451324A
- Authority
- CN
- China
- Prior art keywords
- hydrogen storage
- storage cylinder
- pressure hydrogen
- cover body
- protective cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F17C13/04—Arrangement or mounting of valves
-
- 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
- F17C13/06—Closures, e.g. cap, breakable member
-
- 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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0308—Protective caps
-
- 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
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/016—Preventing slosh
-
- 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 protective cover and a high-pressure hydrogen storage cylinder, and relates to the technical field of high-pressure containers. The protective cover and the high-pressure hydrogen storage cylinder can protect the high-pressure hydrogen storage cylinder, reduce the damage to the high-pressure hydrogen storage cylinder caused by external force and improve the use safety.
Description
Technical Field
The invention relates to the technical field of high-pressure containers, in particular to a protective cover and a high-pressure hydrogen storage cylinder.
Background
Under the background of 'double carbon', the development of hydrogen energy becomes a global consensus, and in a vehicle-mounted hydrogen storage cylinder, the high-pressure hydrogen storage cylinder has light weight, higher unit mass hydrogen storage density and better fatigue resistance, and is widely applied in overseas markets. With the continuous development of hydrogen fuel cell automobile technology in China, the requirements of the market on the capacity, the light weight, the pressure resistance and the like of a high-pressure hydrogen storage bottle are continuously improved, so that the high-pressure hydrogen storage bottle has better development prospect in China in the future, and the safety protection of the gas bottle is of great importance.
In the existing industry, the protection measures of the gas cylinder generally adopt rubber or metal materials, and the rubber has the defects of material aging and easy deformation; the metal material has good stability and is not easy to age, but has heavier weight and does not meet the requirement of reducing the weight of the vehicle.
Disclosure of Invention
The invention aims to provide a protective cover and a high-pressure hydrogen storage cylinder, which are used for solving the problems in the prior art, can protect the high-pressure hydrogen storage cylinder, reduce the damage of the high-pressure hydrogen storage cylinder caused by external force and improve the use safety.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a protective cover which comprises a cover body, wherein the cover body is used for covering and fixing the end part of a high-pressure hydrogen storage cylinder, the inner wall of the cover body can be attached to the outer wall of the end part of the high-pressure hydrogen storage cylinder, an opening is formed in the middle of the cover body and used for extending out a valve of the gas cylinder, a groove is formed in the inner wall of the cover body, and the cover body is made of thermoplastic polyurethane and graphite materials.
Preferably, the number of the grooves is two, and the two grooves are symmetrically formed.
Preferably, the outer wall of the cover body is provided with a reticulate pattern knurl.
Preferably, the inner wall of the cover body is fixedly bonded with the outer wall of the end part of the high-pressure hydrogen storage cylinder through high-temperature-resistant high-strength structural adhesive.
Preferably, in the cover body, the proportion of the thermoplastic polyurethane, the proportion of the graphite material and the proportion of the additive are respectively 17%, 80% and 3%.
The invention also provides a high-pressure hydrogen storage cylinder which comprises a cylinder body and two protective covers in any one of the technical schemes, wherein the two protective covers are respectively covered and fixed at the end socket and the tail end of the cylinder body.
Compared with the prior art, the invention has the following technical effects:
the invention provides a protective cover and a high-pressure hydrogen storage cylinder, wherein the cover body is used for covering and fixing the end part of the high-pressure hydrogen storage cylinder, so that sealing rings at the opening and the tail of the high-pressure hydrogen storage cylinder are protected through the protective cover, the damage to the sealing rings is reduced, the transmission of high-temperature heat is prolonged, and time is provided for the pressure relief of a valve of the gas cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a protective cover according to an embodiment;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic structural view of a high-pressure hydrogen storage cylinder provided in the second embodiment;
in the figure: 100-protective cover, 200-high pressure hydrogen storage cylinder, 1-cover body, 2-groove, 3-bottle body and 4-cylinder valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a protective cover and a high-pressure hydrogen storage cylinder, and aims to solve the technical problems of heavy weight and poor protective capability of the conventional protective device for the high-pressure hydrogen storage cylinder.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1-3, this embodiment provides a protective cover 100, which includes a cover body 1, the cover body 1 is used to cover and fix the end of a high-pressure hydrogen storage cylinder 200, so as to protect the sealing rings at the opening and the end of the cylinder by the protective cover 100, reduce the damage to the sealing rings, prolong the transmission of high-temperature heat, and provide time for pressure relief of the cylinder valve 4, the inner wall of the cover body 1 can be attached to the outer wall of the end of the high-pressure hydrogen storage cylinder 200, thereby improving the stability of the end connection between the protective cover 100 and the high-pressure hydrogen storage cylinder 200, the middle part of the cover body 1 is provided with an opening for extending the cylinder valve 4, so that a worker can operate the cylinder valve 4, the inner wall of the cover body 1 is provided with a groove 2, thereby solving the problem of thermal expansion of the protective cover 100 under the change of external environment, and preventing the fixation failure of the protective cover 100 caused by the external environment, the cover body 1 includes thermoplastic polyurethane and graphite, which is light, high-temperature resistant, impact resistant, and aging-resistant, wherein the graphite material can rapidly expand when heated in case of the high-pressure hydrogen storage cylinder 200, and the high-pressure hydrogen storage cylinder is damaged by the impact energy.
Specifically, two grooves 2 are provided, and the two grooves 2 are symmetrically formed, so that the protective cover 100 cannot be bonded or failed when the external environment changes, and in the actual production process, the number of the grooves 2 can be adaptively changed by a person skilled in the art according to actual needs.
Be equipped with the reticulation annular knurl on the outer wall of the cover body 1, can increase the frictional force of the 1 surface of the cover body, drop in avoiding the installation.
The inner wall of the cover body 1 and the outer wall of the end part of the high-pressure hydrogen storage cylinder 200 are bonded and fixed by high-temperature-resistant high-strength structural adhesive, so that the protective cover 100 is tightly bonded on the surface of the high-pressure hydrogen storage cylinder 200 and is not easy to fall off.
In the cover body 1, the ratio of the thermoplastic polyurethane, the graphite material and the additive is respectively 17%, 80% and 3%, and the cover body 1 is formed by injection molding, so that the product has good dimensional stability and a compact internal structure, and cracks are not easy to generate; the product has light weight, is beneficial to reducing the weight of a vehicle, and preferably, the additive is a flame retardant.
Example two
As shown in fig. 4, the present embodiment provides a high pressure hydrogen storage cylinder 200, which includes a cylinder body 3 and two protection covers 100 of the first embodiment, wherein the two protection covers 100 are respectively covered and fixed at the sealing head and the sealing end of the cylinder body 3.
When a burn and drop test is performed for the practicability of the high-pressure hydrogen storage cylinder 200 to which the protective cover 100 is attached:
drop test: in the process of a 3-meter (standard is 1.8 meters) drop test, different drop angles are adopted, multiple drops are carried out, the protective cover 100 is firmly connected with the bottle body 3, the dropping phenomenon does not occur, and the appearance structure of the high-pressure hydrogen storage cylinder 200 is intact;
and (3) burning test: when the surface temperature of the high-pressure hydrogen storage cylinder 200 reaches above 600 ℃ and the combustion is continued for 15 minutes, the surface temperature of the high-pressure hydrogen storage cylinder 200 at the position corresponding to the protection cover 100 is kept below 250 ℃.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (6)
1. A protective cover, characterized in that: including the cover body, the cover body is used for covering the tip and fixed of locating high-pressure hydrogen storage cylinder, just the inner wall of the cover body can laminate with the tip outer wall of high-pressure hydrogen storage cylinder, the middle part of the cover body is equipped with the opening, the opening is used for stretching out of gas cylinder valve, be equipped with the recess on the inner wall of the cover body, the material of the cover body includes thermoplastic polyurethane and graphite.
2. The protective cover of claim 1, wherein: the number of the grooves is two, and the two grooves are symmetrically formed.
3. The protective cover of claim 1, wherein: and reticulate patterns are arranged on the outer wall of the cover body.
4. The protective cover of claim 1, wherein: the inner wall of the cover body is fixedly bonded with the outer wall of the end part of the high-pressure hydrogen storage cylinder through high-temperature-resistant high-strength structural adhesive.
5. The protective cover of claim 1, wherein: in the cover body, the proportion of the thermoplastic polyurethane, the proportion of the graphite material and the proportion of the additive are respectively 17 percent, 80 percent and 3 percent.
6. A high-pressure hydrogen storage cylinder is characterized in that: comprises a bottle body and two protective covers as claimed in any one of claims 1 to 5, wherein the two protective covers are respectively covered and fixed at the end socket and the end seal of the bottle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112421.4A CN115451324A (en) | 2022-09-14 | 2022-09-14 | Protective cover and high-pressure hydrogen storage cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112421.4A CN115451324A (en) | 2022-09-14 | 2022-09-14 | Protective cover and high-pressure hydrogen storage cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115451324A true CN115451324A (en) | 2022-12-09 |
Family
ID=84302844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211112421.4A Pending CN115451324A (en) | 2022-09-14 | 2022-09-14 | Protective cover and high-pressure hydrogen storage cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115451324A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653276Y (en) * | 2003-10-14 | 2004-11-03 | 上海高压容器有限公司 | Improved structure of steel cylinder neck ring |
| CN2713283Y (en) * | 2003-12-30 | 2005-07-27 | 上海高压特种气瓶有限公司 | Small gas cylinder neck ring |
| JP2014074470A (en) * | 2012-10-05 | 2014-04-24 | Toyota Motor Corp | Pressure vessel and production method therefor |
| CN208237482U (en) * | 2018-05-07 | 2018-12-14 | 安徽绿动能源有限公司 | The protective cover of filament-wound composite cylinder |
| CN109353458A (en) * | 2018-10-22 | 2019-02-19 | 江南造船(集团)有限责任公司 | The insulating layer installation method of independent liquid cargo tank commissure |
| CN208935819U (en) * | 2018-08-29 | 2019-06-04 | 射洪县平安制氧有限责任公司 | A kind of oxygen cylinder safety cap |
| CN209540042U (en) * | 2018-12-20 | 2019-10-25 | 丹东锦达密封有限公司 | Mechanical seal slides auxiliary seal ring baffle ring |
| CN209839687U (en) * | 2019-05-15 | 2019-12-24 | 浙江威能消防器材股份有限公司 | A gas cylinder with multiple protective devices |
| CN210241163U (en) * | 2019-06-20 | 2020-04-03 | 丰田自动车株式会社 | High-pressure tank |
| CN210950792U (en) * | 2019-11-21 | 2020-07-07 | 宜昌市得心实用气体有限公司 | Cryogenic gas filling safety protection device |
| CN214617822U (en) * | 2021-03-25 | 2021-11-05 | 扬中市天成密封科技有限公司 | Long service life's rubber O type circle |
| CN215335756U (en) * | 2021-07-28 | 2021-12-28 | 浙江凯博压力容器有限公司 | High pressure vessel |
| CN215636503U (en) * | 2021-09-09 | 2022-01-25 | 重庆前卫科技集团有限公司 | Opening of hydrogen storage tank and hydrogen storage tank |
| CN216345371U (en) * | 2021-12-22 | 2022-04-19 | 浙江威能消防器材股份有限公司 | Cervical collar for aluminum alloy gas cylinder |
| CN114923111A (en) * | 2022-06-15 | 2022-08-19 | 江苏国富氢能技术装备股份有限公司 | Vehicle-mounted high-pressure gas storage cylinder and manufacturing method thereof |
-
2022
- 2022-09-14 CN CN202211112421.4A patent/CN115451324A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653276Y (en) * | 2003-10-14 | 2004-11-03 | 上海高压容器有限公司 | Improved structure of steel cylinder neck ring |
| CN2713283Y (en) * | 2003-12-30 | 2005-07-27 | 上海高压特种气瓶有限公司 | Small gas cylinder neck ring |
| JP2014074470A (en) * | 2012-10-05 | 2014-04-24 | Toyota Motor Corp | Pressure vessel and production method therefor |
| CN104662355A (en) * | 2012-10-05 | 2015-05-27 | 丰田自动车株式会社 | Pressure vessel and production method therefor |
| CN208237482U (en) * | 2018-05-07 | 2018-12-14 | 安徽绿动能源有限公司 | The protective cover of filament-wound composite cylinder |
| CN208935819U (en) * | 2018-08-29 | 2019-06-04 | 射洪县平安制氧有限责任公司 | A kind of oxygen cylinder safety cap |
| CN109353458A (en) * | 2018-10-22 | 2019-02-19 | 江南造船(集团)有限责任公司 | The insulating layer installation method of independent liquid cargo tank commissure |
| CN209540042U (en) * | 2018-12-20 | 2019-10-25 | 丹东锦达密封有限公司 | Mechanical seal slides auxiliary seal ring baffle ring |
| CN209839687U (en) * | 2019-05-15 | 2019-12-24 | 浙江威能消防器材股份有限公司 | A gas cylinder with multiple protective devices |
| CN210241163U (en) * | 2019-06-20 | 2020-04-03 | 丰田自动车株式会社 | High-pressure tank |
| CN210950792U (en) * | 2019-11-21 | 2020-07-07 | 宜昌市得心实用气体有限公司 | Cryogenic gas filling safety protection device |
| CN214617822U (en) * | 2021-03-25 | 2021-11-05 | 扬中市天成密封科技有限公司 | Long service life's rubber O type circle |
| CN215335756U (en) * | 2021-07-28 | 2021-12-28 | 浙江凯博压力容器有限公司 | High pressure vessel |
| CN215636503U (en) * | 2021-09-09 | 2022-01-25 | 重庆前卫科技集团有限公司 | Opening of hydrogen storage tank and hydrogen storage tank |
| CN216345371U (en) * | 2021-12-22 | 2022-04-19 | 浙江威能消防器材股份有限公司 | Cervical collar for aluminum alloy gas cylinder |
| CN114923111A (en) * | 2022-06-15 | 2022-08-19 | 江苏国富氢能技术装备股份有限公司 | Vehicle-mounted high-pressure gas storage cylinder and manufacturing method thereof |
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