WO2019129224A1 - 氢气瓶 - Google Patents

氢气瓶 Download PDF

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Publication number
WO2019129224A1
WO2019129224A1 PCT/CN2018/124992 CN2018124992W WO2019129224A1 WO 2019129224 A1 WO2019129224 A1 WO 2019129224A1 CN 2018124992 W CN2018124992 W CN 2018124992W WO 2019129224 A1 WO2019129224 A1 WO 2019129224A1
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WO
WIPO (PCT)
Prior art keywords
bottle
hydrogen cylinder
section
valve
seal
Prior art date
Application number
PCT/CN2018/124992
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English (en)
French (fr)
Inventor
张庆华
马库斯坎佩奇
吉田泰树
孙福龙
杨浩
Original Assignee
长城汽车股份有限公司
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Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Publication of WO2019129224A1 publication Critical patent/WO2019129224A1/zh

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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
    • 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
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • 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

Definitions

  • the invention relates to the technical field of bottle valve fixed installation, in particular to a hydrogen cylinder.
  • hydrogen cylinders Due to the working conditions of fuel cell vehicles, hydrogen cylinders have more and more functions as controllers for controlling hydrogen fuel output. In order to reduce the number of high-pressure hydrogen pipelines and improve product reliability, hydrogen cylinders will integrate electromagnetic actuators and filters. , safety relief device, pressure sensor, temperature sensor, overvoltage protector, pressure reducing valve and other functions. Due to the limited space inside the small motor vehicle and the high pressure of hydrogen, this puts high demands on the volume, weight and sealing of the hydrogen cylinder, and the bottle valve is different due to the different shapes and sizes of the integrated components on the hydrogen cylinder. It is an asymmetrical shape in the circumferential direction.
  • the existing on-vehicle high-pressure hydrogen bottle is usually fixed on the frame by a hydrogen bottle frame, and the frame includes a hydrogen bottle bracket, and the hydrogen bottle strap is composed of an automatic compensation device for tightening force.
  • the problem of circumferential asymmetry of the integrated bottle valve is solved by adjusting the circumferential angle of the hydrogen bottle.
  • the hydrogen bottle cannot be adjusted.
  • a circumferential perspective to solve this problem When the hydrogen cylinder and the bottle valve are assembled on the whole vehicle, since the circumferential direction is the same every time the valve is installed, the hydrogen pipeline after the outlet of the valve is different every time, so that the vehicle cannot be realized. Consistency of assembly status.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • an object of the present invention is to provide a hydrogen cylinder which is small in size and can save installation space.
  • the hydrogen cylinder according to the present invention comprises: a bottle body, a bottle valve and a locking member, the bottle body having a bottle mouth; the bottle valve being mounted to the bottle mouth; the locking member being threadedly engaged with the bottle valve and Stopping against the outer end surface of the bottle mouth.
  • the bottle valve can be fixed in any circumferential position after being installed in the hydrogen storage bottle, and the circumferential asymmetry of the bottle valve can be solved, and the hydrogen gas is solved.
  • the small size of the bottle saves installation space.
  • the hydrogen cylinder according to the above embodiment of the present invention may have the following additional technical features:
  • the bottle mouth is provided with an internal thread
  • the bottle valve is provided with an external thread
  • the locking member is a lock nut
  • the external thread is respectively connected with the internal thread of the bottle mouth and The lock nut is mated.
  • the locking member includes a stopper piece that abuts against an outer end surface of the bottle opening and the abutting surface is a flat surface.
  • the hydrogen cylinder further includes: a sealing ring sleeved on an outer peripheral wall of the bottle valve and located in an inner peripheral wall of the bottle opening.
  • the inner peripheral wall of the finish includes: an inner threaded section and a seal mating section, the seal mating section being located axially inward of the inner threaded section, the seal ring and the seal mating section
  • the axial length of the sealing engagement section is L1
  • the thread pitch of the bottle mouth is X
  • the outer peripheral wall of the bottle valve comprises: an external thread section and a sealing contact section, the external thread section and the The internal thread segment corresponds to the sealing engagement portion
  • the axial length of the sealing contact portion is L2, wherein L1>L2+0.5X.
  • the inner peripheral wall of the finish includes: an inner threaded section and a seal fit section, the seal mating section being located axially inward of the inner thread section, the surface roughness of the seal mating section being less than 3.2S.
  • the hydrogen cylinder further includes: a stopper that is sleeved on an outer peripheral wall of the bottle valve and located on an axial inner side of the seal ring, the bottle valve being A stopper step is provided on an axially outer side of the seal ring.
  • the stop comprises a stop collar and a stop nut, the stop ring being located between the sealing ring and the stop nut.
  • the sealing ring is a rubber ring.
  • the finish is provided with a recess that is recessed axially inwardly, the locking member being located within the recess.
  • Figure 1 is a cross-sectional view showing a hydrogen cylinder according to an embodiment of the present invention
  • Figure 2 is an enlarged view of A in Figure 1;
  • FIG. 3 is a cross-sectional view of the bottle valve, the locking member, the sealing ring and the stopper of the hydrogen bottle after assembly according to an embodiment of the present invention
  • FIG. 4 is a schematic view of a bottle valve of a hydrogen bottle according to an embodiment of the present invention.
  • Figure 5 is a cross-sectional view showing a bottle body of a hydrogen cylinder according to an embodiment of the present invention.
  • Figure 6 is an enlarged view of B in Figure 5;
  • Figure 7 is a cross-sectional view showing a bottle valve of a hydrogen cylinder according to an embodiment of the present invention.
  • a hydrogen cylinder 10 includes: a bottle body 1, a bottle valve 2, and a locking member 3, the bottle body 1 has a bottle mouth 11, and the bottle valve 2 is installed at the bottle mouth 11 The locking member 3 is threadedly engaged with the bottle valve 2, and the locking member 3 is abutted against the outer end surface of the bottle opening 11. It should be noted that the outer end surface of the bottle opening 11 refers to the axially outer end surface of the bottle opening 11.
  • the threaded valve 3 can be fixed in any circumferential position after being installed in the hydrogen storage bottle by screwing the locking member 3 to the bottle valve 2, thereby solving the problem of circumferential asymmetry of the bottle valve 2, thereby
  • the assembly of the hydrogen piping connected to the bottle valve 2 is made more uniform, and the locking member 3 is stopped against the outer end surface of the bottle opening 11, so that the structure of the locking member 3 and the bottle opening 11 can be made more compact.
  • the volume of the hydrogen cylinder 10 is reduced, so that the installation space of the hydrogen cylinder 10 can be saved.
  • the bottle valve 2 can be fixed in any circumferential position after being installed in the hydrogen storage bottle, and the circumferential asymmetry of the bottle valve 2 can be solved.
  • the hydrogen cylinder 10 has a small volume, which can save installation space.
  • the bottle mouth 11 is provided with an internal thread
  • the bottle valve 2 is provided with an external thread
  • the locking member 3 is a lock nut
  • the external thread on the bottle valve 2 is respectively matched with the internal thread of the bottle mouth 11 and the lock nut.
  • the working reliability of the hydrogen cylinder 10 can be ensured, and the internal thread is matched with the external thread, and can also resist the pressure of hydrogen from the hydrogen cylinder 10, and at the same time, the lock nut and the external thread on the bottle valve 2 are matched to lock
  • the tightening nut is pressed against the outer end surface of the bottle opening 11 to tightly bond the lock nut, the bottle valve 2 and the bottle body 1, and the thread preloading force is also resistant to the pressure of hydrogen from the hydrogen cylinder 10, thereby
  • the problem that the bottle valve 2 resists the pressure of the high pressure gas in the bottle body 1 can be solved.
  • FIG. 4 a top view of the hydrogen cylinder 10, the specific structure of the bottle valve 2 can be seen from FIG. 4, and the bottle valve 2 can be disposed at the upper portion of the bottle body 1.
  • the locking member 3 may include abutting piece 31, the abutting piece 31 is stopped at the outer end surface of the bottle opening 11, and the abutting surface of the abutting piece 31 is a flat surface.
  • the outer end surface of the bottle opening 11 may also be a flat surface.
  • the hydrogen cylinder 10 may further include: a sealing ring 4 which is sleeved on the outer peripheral wall of the bottle valve 2, and when the sealing ring 4 is assembled to the bottle body 1, the sealing ring 4 Located in the inner peripheral wall of the bottle opening 11, wherein the sealing ring 4 has a sealing function, the arrangement can ensure that the bottle valve 2 has a good sealing property, and the hydrogen in the hydrogen cylinder 10 can be prevented from leaking from the bottle valve 2, thereby further The operational reliability of the hydrogen cylinder 10 is ensured.
  • the inner peripheral wall of the bottle opening 11 may include: an internal thread segment 111 and a sealing fitting portion 112, and the sealing fitting portion 112 is located on the axial inner side of the internal thread segment 111, and the sealing ring 4 is The sealing mating section 112 corresponds to each other. It should be noted that when the hydrogen cylinder 10 is assembled, the sealing ring 4 is assembled at the sealing fitting section 112, the axial length of the sealing fitting section 112 is L1, and the thread pitch of the bottle opening 11 is X. .
  • the outer peripheral wall of the bottle valve 2 may include an externally threaded section 21 and a sealed contact section 22, the externally threaded section 21 corresponding to the internal threaded section 111, and the sealing contact section 22 corresponding to the sealing engagement section 112.
  • the externally threaded section 21 is assembled with the internal thread section 111
  • the sealing contact section 22 is assembled with the sealing engagement section 112
  • the axial length of the sealing contact section 22 is L2.
  • L1>L2+0.5X in summary, the arrangement can make the bottle valve 2 and the bottle body 1 more tightly assembled, so that the sealing problem of the bottle valve 2 can be better solved.
  • the inner peripheral wall of the bottle opening 11 may include an inner threaded section 111 and a seal fitting section 112, and the seal fitting section 112 is located on the axial inner side of the inner threaded section 111 to seal the mating section 112.
  • the surface roughness is less than 3.2S.
  • the hydrogen cylinder 10 may further include: a stopper 5, the stopper 5 is sleeved on the outer peripheral wall of the bottle valve 2, and the stopper 5 is located on the axial inner side of the sealing ring 4,
  • the bottle valve 2 is provided with a stop step 23 on the axially outer side of the seal ring 4, wherein both the stop member 5 and the stop step 23 have a stop action, and the seal ring 4 is arranged on the stop member 5 and the stop step 23 Between the two, the movement range of the sealing ring 4 can be made between the stopper 5 and the stopper step 23.
  • the stopper 5 may include a retaining ring 51 and a stop nut 52, and the retaining ring 51 is located between the sealing ring 4 and the retaining nut 52, so that the setting can better
  • the hydrogen cylinder 10 is assembled to prevent the seal ring 4 from coming off the bottle valve 2, thereby ensuring the operational reliability of the seal ring 4.
  • the sealing ring 4 can be a rubber ring, and the sealing performance of the rubber ring is better, and the sealing property of the bottle valve 2 can be further improved.
  • the bottle mouth 11 is provided with a groove 6 recessed in the axially inner side, and the locking member 3 is located in the groove 6, when the locking member 3 and the bottle mouth 11
  • the height of the outer end surface of the bottle valve 2 and the bottle opening 11 is not increased, and the height thereof can be reduced, so that the space for opening the bottle valve 2 due to the increase of the locking member 3 can be solved. The problem.
  • the function realization process of the hydrogen cylinder 10 is detailed: the locking member 3 is screwed into the upper portion of the externally threaded section 21 of the bottle valve 2, and the sealing ring 4 and the retaining ring 51 are placed in the bottle valve 2 in order.
  • the retaining ring 4 and the retaining ring 51 are then fixed by the retaining nut 52 so that the range of movement is within the sealing fit section 112 of the bottle valve 2 and the bottle opening 11,
  • the assembled bottle valve 2 is then screwed into the bottle opening 11 and, when the bottle valve 2 is tightened to the lower portion of the internal thread section 111 of the bottle opening 11, within 0.5 pitch of the internal thread section 111 of the bottle opening 11 ( In the range of 180 degrees, the bottle valve 2 is fine-tuned to the desired position, and finally the locking member 3 is rotated to completely tighten the bottle valve 2, thereby achieving the purpose of fixing the position of the integrated bottle valve 2.

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

Abstract

一种氢气瓶（10），氢气瓶（10）包括：瓶体（1）、瓶阀（2）和锁紧件（3），瓶体（1）具有瓶口（11）；瓶阀（2）安装于瓶口（11）；锁紧件（3）与瓶阀（2）螺纹配合且止抵于瓶口（11）的外端面。通过瓶体（1）、瓶阀（2）和锁紧件（3）配合，能够实现瓶阀（2）安装到氢气瓶（10）后可在任意周向位置固定的目的，可以解决氢气瓶（10）周向不对称的问题，并且，该氢气瓶（10）的体积小，可以节省安装空间。

Description

氢气瓶
相关申请的交叉引用
本申请要求长城汽车股份有限公司于2017年12月29日提交的、发明名称为“氢气瓶”的、中国专利申请号“201711473481.8”的优先权。
技术领域
本发明涉及瓶阀固定安装技术领域，特别是涉及一种氢气瓶。
背景技术
随着国际上燃料电池汽车的发展，35MPa和70MPa高压储氢及加注技术成为了目前高压储氢领域的主流发展方向。
由于燃料电池汽车的使用工况要求，氢气瓶作为控制氢气燃料输出的控制器功能越来越多，为了减少高压氢气管路的数量，提高产品可靠性，氢气瓶会集成电磁执行器、过滤器、安全泄压装置、压力传感器、温度传感器、过压保护器、减压阀等功能。由于小型机动车内部狭小空间的限制以及氢气的高压力，这就对氢气瓶的体积、重量以及密封性提出了较高的要求，且由于氢气瓶上集成的零部件形状大小不同，导致瓶阀在周向上是一种不对称的形状。
现有的车载高压氢气瓶通常采用一种氢气瓶框架周向固定在车架上，该框架包括氢气瓶托架，氢气瓶绑带以收紧力自动补偿装置等组成。瓶阀安装在氢气瓶上以后，通过调整氢气瓶周向的角度来解决集成瓶阀周向不对称的问题，但是在氢气瓶用轴向方法固定在车架上时，就不能通过调整氢气瓶周向的角度来解决这一问题。而在氢气瓶及瓶阀装配在整车上时，由于不能保证每次瓶阀安装时周向方向都一样，这就导致瓶阀出口后的氢气管路走向每次都不同，从而无法实现车辆装配状态的一致性。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本发明的一个目的在于提出一种氢气瓶，该氢气瓶的体积小，可以节省安装空间。
根据本发明的氢气瓶包括：瓶体、瓶阀和锁紧件，所述瓶体具有瓶口；所述瓶阀安装于所述瓶口；所述锁紧件与所述瓶阀螺纹配合且止抵于所述瓶口的外端面。
由此，通过瓶体、瓶阀和锁紧件配合，能够实现瓶阀安装到储氢瓶后可在任意周向位置固定的目的，可以解决瓶阀周向不对称的问题，并且，该氢气瓶的体积小，可以节省安装空间。
另外，根据本发明上述实施例的氢气瓶还可以具有如下附加的技术特征：
根据本发明的一个示例，所述瓶口处设置有内螺纹，所述瓶阀设置有外螺纹，所述锁紧件为锁紧螺母，所述外螺纹分别与所述瓶口的内螺纹和所述锁紧螺母配合。
根据本发明的一个示例，所述锁紧件包括：止抵片，所述止抵片止抵于所述瓶口的外端面且止抵面为平面。
根据本发明的一个示例，所述的氢气瓶还包括：密封圈，所述密封圈套设于所述瓶阀的外周壁且位于所述瓶口的内周壁内。
根据本发明的一个示例，所述瓶口的内周壁包括：内螺纹段和密封配合段，所述密封配合段位于所述内螺纹段的轴向内侧，所述密封圈与所述密封配合段相对应，所述密封配合段的轴向长度为L1，所述瓶口的螺纹螺距为X；所述瓶阀的外周壁包括：外螺纹段和密封接触段，所述外螺纹段与所述内螺纹段相对应，所述密封接触段与所述密封配合段相对应，所述密封接触段的轴向长度为L2，其中，L1>L2+0.5X。
根据本发明的一个示例，所述瓶口的内周壁包括：内螺纹段和密封配合段，所述密封配合段位于所述内螺纹段的轴向内侧，所述密封配合段的表面粗糙度小于3.2S。
根据本发明的一个示例，所述的氢气瓶还包括：止挡件，所述止挡件套设于所述瓶阀的外周壁且位于所述密封圈的轴向内侧，所述瓶阀在所述密封圈的轴向外侧设置有止挡台阶。
根据本发明的一个示例，所述止挡件包括：止挡圈和止挡螺母，所述止挡圈位于所述密封圈和所述止挡螺母之间。
根据本发明的一个示例，所述密封圈为橡胶圈。
根据本发明的一个示例，所述瓶口设置有向轴向内侧凹入的凹槽，所述锁紧件位于所述凹槽内。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1为本发明实施例所述的氢气瓶的剖视图；
图2为图1中A处的放大图；
图3为本发明实施例所述的氢气瓶的瓶阀、锁紧件、密封圈和止挡件装配后的剖视图；
图4为本发明实施例所述的氢气瓶的瓶阀的示意图；
图5为本发明实施例所述的氢气瓶的瓶体的剖视图；
图6为图5中B处的放大图；
图7为本发明实施例所述的氢气瓶的瓶阀的剖视图。
具体实施方式
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
下面将参考附图并结合实施例来详细说明本发明实施例的氢气瓶10。
如图1-图7所示，根据本发明实施例的氢气瓶10包括：瓶体1、瓶阀2和锁紧件3，瓶体1具有瓶口11，瓶阀2安装于瓶口11处，锁紧件3与瓶阀2螺纹配合，而且锁紧件3止抵于瓶口11的外端面，需要说明的是，瓶口11的外端面是指瓶口11的轴向外侧端面。
其中，通过锁紧件3与瓶阀2螺纹配合连接，能够实现瓶阀2安装到储氢瓶后可在任意周向位置固定的目的，可以解决瓶阀2周向不对称的问题，从而可以使连接到瓶阀2上的氢气管路的装配更加一致，并且，将锁紧件3止抵于瓶口11的外端面上，能够使锁紧件3与瓶口11的结构更加紧凑，可以减小氢气瓶10的体积，从而可以节省氢气瓶10的安装空间。
由此，通过瓶体1、瓶阀2和锁紧件3配合，能够实现瓶阀2安装到储氢瓶后可在任意周向位置固定的目的，可以解决瓶阀2周向不对称的问题，并且，该氢气瓶10的体积小，可以节省安装空间。
可选地，瓶口11处设置有内螺纹，瓶阀2设置有外螺纹，锁紧件3为锁紧螺母，瓶阀2上的外螺纹分别与瓶口11的内螺纹和锁紧螺母配合，其中，通过瓶口11的内螺纹和瓶阀2的外螺纹进行配合，能够将瓶阀2稳固、可靠地设置在瓶口11内，可以提升瓶阀2与瓶口11的整体结构强度，从而可以保证氢气瓶10的工作可靠性，并且，内螺纹与外螺纹配合，也能够抵抗来自氢气瓶10内氢气的压力，同时，通过锁紧螺母与瓶阀2上的外螺纹配合，将锁紧螺母止抵于瓶口11的外端面上，能够使锁紧螺母、瓶阀2和瓶体1紧密地结合在一起，产生的螺纹预紧力也可以抵抗来自氢气瓶10内氢气的压力，从而可以解决瓶阀2抵抗瓶体1中高压气体的压力的问题。其中，如图4所示，氢气瓶10的俯视图，从图4中可以看出瓶阀2的具体结构，瓶阀2可以设置在瓶体1的上部。
进一步地，如图2和图3所示，锁紧件3可以包括：止抵片31，止抵片31止抵于瓶口11的外端面处，而且止抵片31的止抵面为平面，其中，瓶口11的外端面也可以为平面，当瓶口11的外端面与止抵片31的止抵面止抵在一起时，如此设置能够使锁紧件3更好地止抵在瓶口11的外端面上，可以提升锁紧件3与瓶口11的外端面的装配精度。
具体地，如图3所示，氢气瓶10还可以包括：密封圈4，密封圈4套设于瓶阀2的外周壁上，而且当密封圈4装配到瓶体1上时，密封圈4位于瓶口11的内周壁内，其中，密封圈4具有密封作用，如此设置能够保证瓶阀2具有很好的密封性，可以防止氢气瓶10内的氢气从瓶阀2处泄漏，从而可以进一步保证氢气瓶10的工作可靠性。
可选地，如图5和图6所示，瓶口11的内周壁可以包括：内螺纹段111和密封配合段112，密封配合段112位于内螺纹段111的轴向内侧，密封圈4与密封配合段112相对应，需要说明的是，当氢气瓶10装配完成时，密封圈4装配在密封配合段112处，密封配合段112的轴向长度为L1，瓶口11的螺纹螺距为X。
另外，如图7所示，瓶阀2的外周壁可以包括：外螺纹段21和密封接触段22，外螺纹段21与内螺纹段111相对应，密封接触段22与密封配合段112相对应，需要解释的是，当氢气瓶10装配完成时，外螺纹段21与内螺纹段111装配在一起，密封接触段22与密封配合段112装配在一起，密封接触段22的轴向长度为L2，其中，L1>L2+0.5X，综上所述，如此设置可以使瓶阀2与瓶体1装配的更加严密，从而可以更好地解决瓶阀2的密封性问题。
进一步地，如图5和图6所示，瓶口11的内周壁可以包括：内螺纹段111和密封配合段112，密封配合段112位于内螺纹段111的轴向内侧，密封配合段112的表面粗糙度小于3.2S，当瓶阀2在上、下0.5个螺距内变动(轴向360度转动)时，可以保证氢气瓶10的密封性不受影响。
具体地，如图3所示，氢气瓶10还可以包括：止挡件5，止挡件5套设于瓶阀2的外周壁上，而且止挡件5位于密封圈4的轴向内侧，瓶阀2在密封圈4的轴向外侧设置有止挡台阶23，其中，止挡件5和止挡台阶23都具有止挡作用，将密封圈4设置在止挡件5和止挡台阶23之间，可以使密封圈4的移动范围在止挡件5和止挡台阶23之间。
可选地，如图3所示，止挡件5可以包括：止挡圈51和止挡螺母52，止挡圈51位于密封圈4和止挡螺母52之间，如此设置能够更好地将氢气瓶10装配起来，可以防止密封圈4从瓶阀2上脱落，从而可以保证密封圈4的工作可靠性。
进一步地，密封圈4可以为橡胶圈，橡胶圈的密封性能更好，可以进一步提升瓶阀2的密封性。
具体地，如图2、图5和图6所示，瓶口11设置有向轴向内侧凹入的凹槽6，锁紧件3位于凹槽6内，当锁紧件3与瓶口11的外端面直接接触配合时，不会使瓶阀2与瓶口11的外端面的高度变大，可以减小其高度，从而可以解决由于增加锁紧件3引起的瓶阀2放置空间增大的问题。
具体地，详细了解一下氢气瓶10的功能实现过程：把锁紧件3拧入到瓶阀2的外螺纹段21的上部，再按顺序把密封圈4、止挡圈51放置到瓶阀2与瓶口11的密封配合段112合适的位置，然后用止挡螺母52去固定密封圈4和止挡圈51，使其移动范围在瓶阀2与瓶口11的密封配合段112范围内，然后将装配完的瓶阀2拧入到瓶口11上，当瓶阀2拧紧到瓶口11的内螺纹段111的下部时，在瓶口11的内螺纹段111的0.5个螺距范围内(在 180度范围内)，微调瓶阀2，让其达到预想的位置，最后旋转锁紧件3去完全拧紧瓶阀2，从而达成固定集成瓶阀2位置的目的。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种氢气瓶，其特征在于，包括：
    瓶体，所述瓶体具有瓶口；
    瓶阀，所述瓶阀安装于所述瓶口；
    锁紧件，所述锁紧件与所述瓶阀螺纹配合且止抵于所述瓶口的外端面。
  2. 根据权利要求1所述的氢气瓶，其特征在于，所述瓶口处设置有内螺纹，所述瓶阀设置有外螺纹，所述锁紧件为锁紧螺母，所述外螺纹分别与所述瓶口的内螺纹和所述锁紧螺母配合。
  3. 根据权利要求1-2所述的氢气瓶，其特征在于，所述锁紧件包括：止抵片，所述止抵片止抵于所述瓶口的外端面且止抵面为平面。
  4. 根据权利要求1-3所述的氢气瓶，其特征在于，还包括：密封圈，所述密封圈套设于所述瓶阀的外周壁且位于所述瓶口的内周壁内。
  5. 根据权利要求4所述的氢气瓶，其特征在于，所述瓶口的内周壁包括：内螺纹段和密封配合段，所述密封配合段位于所述内螺纹段的轴向内侧，所述密封圈与所述密封配合段相对应，所述密封配合段的轴向长度为L1，所述瓶口的螺纹螺距为X；
    所述瓶阀的外周壁包括：外螺纹段和密封接触段，所述外螺纹段与所述内螺纹段相对应，所述密封接触段与所述密封配合段相对应，所述密封接触段的轴向长度为L2，其中，L1>L2+0.5X。
  6. 根据权利要求4所述的氢气瓶，其特征在于，所述瓶口的内周壁包括：内螺纹段和密封配合段，所述密封配合段位于所述内螺纹段的轴向内侧，所述密封配合段的表面粗糙度小于3.2S。
  7. 根据权利要求4所述的氢气瓶，其特征在于，还包括：止挡件，所述止挡件套设于所述瓶阀的外周壁且位于所述密封圈的轴向内侧，所述瓶阀在所述密封圈的轴向外侧设置有止挡台阶。
  8. 根据权利要求7所述的氢气瓶，其特征在于，所述止挡件包括：止挡圈和止挡螺母，所述止挡圈位于所述密封圈和所述止挡螺母之间。
  9. 根据权利要求4所述的氢气瓶，其特征在于，所述密封圈为橡胶圈。
  10. 根据权利要求1-9中任一项所述的氢气瓶，其特征在于，所述瓶口设置有向轴向内侧凹入的凹槽，所述锁紧件位于所述凹槽内。
PCT/CN2018/124992 2017-12-29 2018-12-28 氢气瓶 WO2019129224A1 (zh)

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