CN1643296A - 压缩气体钢瓶 - Google Patents

压缩气体钢瓶 Download PDF

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Publication number
CN1643296A
CN1643296A CNA038074109A CN03807410A CN1643296A CN 1643296 A CN1643296 A CN 1643296A CN A038074109 A CNA038074109 A CN A038074109A CN 03807410 A CN03807410 A CN 03807410A CN 1643296 A CN1643296 A CN 1643296A
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China
Prior art keywords
cap
dome
main body
compressed gas
gas cylinder
Prior art date
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Granted
Application number
CNA038074109A
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English (en)
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CN100338389C (zh
Inventor
P·德拉塞尔纳
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Alza Corp
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Alza Corp
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Publication date
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Publication of CN1643296A publication Critical patent/CN1643296A/zh
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Publication of CN100338389C publication Critical patent/CN100338389C/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
    • F17C13/06—Closures, e.g. cap, breakable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • 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
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    • 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
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    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/00—Vessel construction, in particular walls or details thereof
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    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • 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
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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
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0736—Capsules, e.g. CO2
    • 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
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0772—Inflation devices, e.g. for rescue vests or tyres
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1632—Destructible element
    • Y10T137/1692—Rupture disc
    • Y10T137/1714—Direct pressure causes disc to burst
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1632—Destructible element
    • Y10T137/1692—Rupture disc
    • Y10T137/1714—Direct pressure causes disc to burst
    • Y10T137/1729—Dome shape
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1632—Destructible element
    • Y10T137/1692—Rupture disc
    • Y10T137/1744—Specific weakening point

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Abstract

一种压缩气体钢瓶，其能够存储在高压下的压缩流体。本发明的钢瓶包括终止于向内形成圆顶的帽盖的主体。包括在本发明的压缩气体钢瓶的帽盖中的圆顶形成为使得在圆顶的顶部附近的材料比在圆顶的基部附近的材料相对要薄。因此，圆顶的顶部在帽盖中产生刺破区域，其可以通过施加相对低的压力来刺破。

Description

压缩气体钢瓶
技术领域
本发明涉及压缩气体钢瓶。具体地，本发明涉及包括具有形成圆顶区域的帽盖的压缩气体钢瓶，该形成圆顶的区域成形为减小释放存储在钢瓶内的压缩气体所需的力。
背景技术
小的压缩气体钢瓶，或者微型钢瓶在本领域中是熟知的。因为微型钢瓶能够在高压下存储相当大量的选择气体，所以它们提供紧凑但是强大的能源，结果，微型钢瓶目前用于很宽范围的应用。例如，微型钢瓶目前用作急救充气装置、气动步枪和手枪、轮胎充气装置、气动驱动的注射装置，以及甚至是用于打泡奶油的装置中的能源。尽管在几种不同功能的情况下暂用，然而，现有技术的微型钢瓶不是理想地适于它们目前使用的每种应用。
具体地，现有技术的微型钢瓶不是理想地适用于自动注射装置，另外已知为“自我注射器”。自我注射器通常设计为促进快速、自动和精确注射需要剂量的选择的药剂，且被认为是特别适用于急救情况，或者由必须经常自我给予治疗物质的受试者使用。当自我注射器的设计或者要被输送的药剂的特性要求自我注射器将药剂加速到高速，或者自我注射器以高注射力驱动药剂，那么微型钢瓶被认为是作为用于自我注射器的能源的理想的候选物。然而，为了从微型钢瓶内释放压缩气体，该微型钢瓶必须被刺破，或者另外损坏，以及在不施加相对高的力的情况下，通常包括在微型钢瓶上的帽盖或者密封件不能被刺破。
标准的微型钢瓶在图1到图3中显示。在这些图中显示的微型钢瓶是可从诸如New Jersey，South Plainfield的Leland Limited，Inc.之类的几个商业供应商获得的典型的微型钢瓶。如图1到图3可见，标准的微型钢瓶10包括终止于帽盖14的主体12。为了释放存储在微型钢瓶10内的压缩气体，帽盖14通常被刺破，为了减小刺破帽盖14所需要的力，帽盖14可以设置有减小厚度的区域，或者“刺破区域”16，在该区域，帽盖可以更加容易地被刺破(在图2和图3的截面中显示)。然而，因为由存储在标准微型钢瓶10中的气体施加的压力使得形成刺破区域16的材料张紧(由箭头17所示)，所以刺破区域16可以变薄的程度受到限制，这是因为刺破区域16必须足够坚固来抵抗当暴露于由微型钢瓶10内的压缩气体施加的张力时的撕裂。因此，即使标准的微型钢瓶10的帽盖14设置有刺破区域16，刺破该帽盖14所需的力也可能超过15磅，或者更大。
为了克服由标准的微型钢瓶产生的刺破力问题，包括标准微型钢瓶的自我注射器通常包括促进产生足够刺破微型钢瓶帽盖的力的机构。该机构本身可以设计为产生足够刺破微型钢瓶的力，如在美国专利6096002中教导的自我注射器中举例的，或者该机构可以简单地给予足够使使用者可以通过施加较小的力来施加所需的刺破力的机械效益。然而，这样的机构通常是不需要的，由于它们可能使自我注射器的设计复杂，在某些情况下可能对使用者是不方便的。
为了解决由标准的微型钢瓶所需的高刺破力产生的问题，UnitedKingdom的Windlesham的BOC Group开发了包括易折断或者断裂的帽盖的微型钢瓶。美国专利5845811(“’811专利”)和美国专利6047865(“’865专利”)涉及由BOC组开发的两种不同的断裂微型钢瓶18、20，这两种不同的设计在图4和图5中显示。在’811专利中描述的第一设计18包括钢瓶主体12、包括易折断的区域22的帽盖14、杠杆24和锚定部件26。该帽盖14通过施加力到杠杆24来损坏，其引起易折断的区域22破裂。在’865专利中描述的第二设计20包括一种微型钢瓶，其具有主体12、具有易折断的区域22和伸长的颈部28的帽盖14。第二设计的伸长的颈部28有效地替代了第一设计的杠杆24，使得当力施加到伸长的颈部28时，易折断的区域22被折断。相对于标准的微型气缸，在’811和’865专利中提出的设计减小了使用者必须施加来破坏微型钢瓶的力的量。
然而，像标准的微型钢瓶一样，在’811和’865专利中教导的断裂微型钢瓶不是没有缺点的。具体地，第一设计的杠杆和第二设计的伸长的颈部都是暴露的，当例如在运输期间或者在装置组装过程期间处理微型钢瓶时，其增加了该断裂微型钢瓶偶然被破坏或者“喷射”的危险。因此，提供这样一种气体钢瓶是本领域中的改进，即，其不但能够在高压下存储压缩流体或者气体，而且还包括相对难以偶然喷射且可以通过施加相对小的力来刺破的帽盖。
发明内容
本发明提供一种压缩气体钢瓶，其能够在高压下存储压缩气体。本发明的压缩气体钢瓶包括终止于向内形成圆顶的帽盖的主体。包括在本发明的压缩气体钢瓶的帽盖中的圆顶形成为使得在圆顶的顶部附近的材料比在圆顶的基部附近的材料相对薄。因此，圆顶的顶部在帽盖中产生了刺破区域，其可以通过施加相对小的压力来刺破。如这里使用的，术语“压缩气体钢瓶”不限于本限制的范围，且为了方便起见，用于指成形为包含或者输送在预定压力下或者压力范围下的需要量的压缩流体的容器。此外，如在本文中使用的，术语“流体”指压缩液体或者气体。
向内带圆顶的帽盖提供了由标准微型钢瓶或者断裂微型钢瓶不能实现的优点。例如，因为圆顶从帽盖的顶部向内延伸，所以由圆顶产生的刺破区域设置在压力下。将刺破区域设置在压力下，而不是张力下，允许刺破区域变薄到比在标准钢瓶中可能的更大程度，这又导致穿透刺破区域所需要的力的减小。此外，面向内的圆顶证明为比包括向外延伸且伸离钢瓶帽盖或者主体的杠杆或者颈部的断裂机构偶然喷射的可能性要小。因此，本发明的该压缩气体钢瓶的设计不但允许减小破坏钢瓶所需的力的量，而且本发明的设计还起在不增加钢瓶偶然喷射的危险的情况下提供这样的力减小的作用。
附图说明
图1提供了如现有技术中已知的标准微型钢瓶的外部的示意性表示；
图2提供了通过图1中所示的微型钢瓶的线A-A截取的截面的示意性表示；
图3提供了图2中所示的截面的部分“C”的放大视图；
图4提供了如在美国专利5845811中教导的典型的断裂微型钢瓶的示意性表示。
图5提供了如在美国专利6047865中教导的第二种典型的断裂微型钢瓶的示意性表示；
图6提供了根据本发明的微型钢瓶的外部的示意性表示；
图7提供了通过图6中所示的微型钢瓶的线A-A截取的截面的示意性表示；以及
图8提供了图7中所示的截面的部分“B”的放大视图。
具体实施方式
根据本发明的一种示例性的压缩气体钢瓶100表示在图6到图8中。如参考图6可见，本发明的压缩气体钢瓶100包括主体102，其看起来在尺寸和形状上大致类似于标准微型钢瓶。然而，不像标准微型钢瓶，本发明的压缩气体钢瓶100包括具有向内形成的圆顶106的帽盖104(如图7和图8的截面所示)。重要的是，包括在帽盖104中的圆顶106形成为使得帽盖104的基部108附近的材料比在帽盖104的顶部110处和附近的材料要厚。因此，在帽盖104的顶部110处和附近的材料形成刺破区域112，其比形成帽盖104的其余部分的材料要更加容易穿透。
有利地，本发明的压缩气体钢瓶100的帽盖104的设计允许包括在圆顶106中的刺破区域112变薄到比包括在标准微型钢瓶的帽盖中的刺破区域可能的更大程度。通过将圆顶106形成为面向内的结构，当暴露于由存储在压缩气体钢瓶100内的压缩流体所施加的压力下时，由圆顶106产生的刺破区域112设置在压缩力下(由力的箭头114表示)，而不是张力下。将圆顶106形成为使得形成刺破区域112的材料设置在压缩力下是重要的，因为当抵靠材料施加的压力使得材料压缩而不是张紧时，给定厚度的材料能够承受更大量的压力。这样，当维持或者改进由钢瓶提供的安全系数时，形成设置在本发明的压缩气体钢瓶100中的刺破区域112的材料可以比形成设置在设计为承受同样压力或者压力范围的标准微型钢瓶中的刺破区域的材料更薄。
由于包括在压缩气体钢瓶100的帽盖104中的刺破区域112的厚度减小了，所以穿透刺破区域112所需的力将明显地减小。本发明的压缩气体钢瓶100的刺破区域112的厚度将根据用于制造帽盖104和包括在帽盖104中的向内形成的圆顶106的材料而变化。然而，本发明的压缩气体钢瓶100的向内形成的圆顶106的设计有利于具有刺破区域的压缩气体钢瓶的制造，该刺破区域比在包括平的或者平面的刺破区域，使用相同材料制造的，以及设计为承受同样的压力或者压力范围的微型钢瓶中需要的刺破区域要薄达到或者大于50％。因此，包括在本发明的钢瓶100的帽盖104中的向内形成的圆顶106使得可以产生具有这样的刺破区域的钢瓶，即，使用比穿透设计为包含相同体积的在相同压力或者压力范围下压缩的气体的标准微型钢瓶的帽盖所必须的力小很多的力可以穿透该刺破区域。
本发明的压缩气体钢瓶100的设计的另外的优点在于，圆顶106的向内形成的设计也起减小偶然喷射的可能性的作用。与由于设置延伸出或者伸离钢瓶的主体的杠杆或者颈部而钢瓶容易喷射的钢瓶或者帽盖设计相反，包括在本发明的压缩气体钢瓶100的帽盖104中的圆顶106从钢瓶100的总体轮廓向内延伸，且进入由主体102限定的体积中。因此，当与包括暴露的杠杆或者易折断的颈部的力减小机构相比，设置在本发明的压缩气体钢瓶100的向内形成的圆顶106的顶部110附近的刺破区域112定位在钢瓶100内的相对更加受保护的位置中。
本发明的压缩气体钢瓶100可以使用由任何合适的制造过程形成的任何合适材料制造。例如，压缩气体钢瓶100的主体102和帽盖104可以使用金属或者金属合金来产生，诸如铝合金、钛合金、不锈钢合金或者碳合金。压缩气体钢瓶100的主体102例如可以由使用传统的冲压和冲模过程成形的拉制金属或者金属合金形成。本发明的压缩气体钢瓶100的帽盖104可以通过例如提供与适当确定尺寸和形状的压缩气体钢瓶100的主体102相容的材料的平的块来制造。设置在帽盖104中的圆顶106可以使用第二次冲压和冲模过程来形成。当圆顶106通过第二次冲压和冲模过程来形成时，这样的过程可以使用来自单个冲模的单次冲击，或者替代地使用来自单个冲模或者一系列渐进地确定尺寸的冲模的两次或者多次连续的冲击来形成所需要的圆顶106。一旦形成本发明的压缩气体钢瓶100的主体102和帽盖104，该压缩气体钢瓶100可以充满需要量的选择的材料，且主体102和帽盖104可以使用任何合适的过程来连接，诸如已知的焊接或者结合过程。
虽然任何合适的方法可以用于形成包括在本发明的压缩气体钢瓶100的帽盖104中的圆顶106，但是冲压和冲模过程是优选的。除了在顶部110处提供具有变薄的刺破区域112的圆顶106以外，相信使用冲压和冲模过程产生的圆顶106会使形成圆顶106的刺破区域112的材料接近其在穿透方向(由箭头116表示)上的屈服点。由于形成圆顶106的材料由一个或者多个冲模冲击，帽盖104的材料伸展为形成圆顶106，形成刺破区域112的材料伸展到最大程度，且当材料伸展到形成圆顶106时，其更加接近其屈服点。通常，伸展到更接近其屈服点的材料对施加的力的弹性更小，且通常比还没有伸展的材料更加容易屈服。因此，相信，相对于提供由非屈服材料形成的同样厚的刺破区域的过程，使用冲压和冲模过程形成包括在本发明的压缩气体钢瓶100的帽盖104中的圆顶106将减小穿透圆顶106的刺破区域112所需的力。
如容易理解的是，本发明的压缩气体钢瓶100可以设计为用于任何需要的情况。例如，钢瓶可以制造为包含实际上任何量的多种在所需要的压力或者压力范围下的压缩气体或者液体。可以包含在根据本发明的压缩气体钢瓶中和从根据本发明的压缩气体钢瓶输送的可压缩的物质的例子包括，但不限于，CO2、氦气、氮气和CDA(清洁干燥空气)。因此，压缩气体钢瓶100的尺寸可以根据需要来改变以适合具体的存储和输送的需要，或者存储和输送需要的具体的范围。此外，该压缩气体钢瓶100的各个部件的规格容易修改，以提供足够强度的钢瓶来匹配所希望的存储或者运输需要。例如，主体102和帽盖104可以由更厚或者更薄的材料形成，以适合具体的存储需要，包括在帽盖104中的圆顶106可以修改为提供在安全性和容易刺破之间提供所希望的平衡的刺破区域112。最后，虽然通常圆柱形的形状对于本发明的压缩气体钢瓶100是优选的，但是装置的形状不需要是圆柱形的。本发明的压缩气体钢瓶100的形式可以从图6到图8中所示的修改为适合具体的应用。然而，不管精确的规格，本发明的钢瓶100促进了能够存储和输送需要量的在高压下的压缩空气的钢瓶的制造，同时减小了喷射钢瓶所需的力。此外，相对于需要暴露的杠杆或者易折断的颈部的力减小机构，包括在本发明的压缩气体钢瓶中的刺破区域的相对受保护的定位起减小钢瓶会偶然被破坏的可能性的作用。

Claims (17)

1.一种用于容纳压缩流体的钢瓶，该钢瓶包括：
成形为容纳需要量的压缩流体的主体；以及向内形成圆顶的帽盖。
2.如权利要求1所述的钢瓶，其特征在于，该主体包括第一端部和第二端部，以及该第一端部和第二端部中的至少一个包括向内形成圆顶的帽盖。
3.如权利要求1所述的钢瓶，其特征在于，该向内形成圆顶的帽盖包括具有基部区域和刺破区域的圆顶，其中，刺破区域的厚度小于基部区域的厚度。
4.一种用于存储和输送压缩流体的容器，该容器包括：
成形为容纳需要量的压缩流体的主体；以及
刺破区域，其中，该刺破区域由圆顶结构提供，其形成为使得圆顶结构向内延伸进入通常由容器的主体限定的体积中。
5.如权利要求4所述的容器，其特征在于，该主体包括第一端部和第二端部，以及该第一端部和第二端部中的至少一个包括刺破区域。
6.如权利要求4所述的容器，其特征在于，其还包括帽盖，其中，该刺破区域设置在帽盖中，且该帽盖和主体成形为使得该帽盖可以接附到主体上。
7.如权利要求4所述的容器，其特征在于，该圆顶结构包括基部和顶部，其中，该刺破区域设置在顶部处或者其附近。
8.一种压缩气体钢瓶，它包括：
包括近端和远端的主体，该主体成形为容纳需要量的在需要压力下的压缩流体材料；以及
在远端处接附到主体上的帽盖，该帽盖具有形成在其上的圆顶，使得该圆顶向内朝着主体的近端延伸。
9.如权利要求8所述的压缩气体钢瓶，其特征在于，形成在帽盖中的该圆顶包括基部和顶部，基部比顶部较厚。
10.如权利要求1所述的钢瓶，其特征在于，该主体和向内形成的帽盖包括从包括铝合金、钛合金、不锈钢合金或者碳钢的组中选择的金属。
11.如权利要求4所述的容器，其特征在于，该主体和刺破区域包括从包括铝合金、钛合金、不锈钢合金或者碳钢的组中选择的金属。
12.如权利要求8所述的压缩气体钢瓶，其特征在于，该主体和帽盖包括从包括铝合金、钛合金、不锈钢合金或者碳钢的组中选择的金属。
13.一种形成压缩气体钢瓶的方法，该方法包括：
设置主体；
设置帽盖；
在帽盖中形成带圆顶的刺破区域；以及
连接主体和帽盖。
14.如权利要求13所述的方法，其特征在于，设置帽盖包括设置由金属或者金属合金形成的帽盖，以及在帽盖中形成带圆顶的刺破区域包括使该帽盖经受冲压和冲模过程。
15.如权利要求14所述的方法，其特征在于，使该帽盖经受冲压和冲模过程包括使该帽盖经受来自冲模的单次冲击。
16.如权利要求14所述的方法，其特征在于，使该帽盖经受冲压和冲模过程包括使该帽盖经受来自单个冲模的多次冲击。
17.如权利要求14所述的方法，其特征在于，使该帽盖经受冲压和冲模过程包括使该帽盖经受来自多个渐进确定尺寸的冲模的多次冲击，其中，该帽盖由所述多个渐进确定尺寸的冲模的每一个冲击至少一次。
CNB038074109A 2002-03-29 2003-03-28 压缩气体钢瓶及其形成方法 Expired - Fee Related CN100338389C (zh)

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