CN1854596B - 用于以填充气体或填充气体混合物填充容器的方法和装置 - Google Patents
用于以填充气体或填充气体混合物填充容器的方法和装置 Download PDFInfo
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- F17C2223/0146—Two-phase
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- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
- F17C2223/042—Localisation of the removal point
- F17C2223/046—Localisation of the removal point in the liquid
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- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
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- 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
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- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
- F17C2225/042—Localisation of the filling point
- F17C2225/046—Localisation of the filling point in the liquid
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- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0337—Heat exchange with the fluid by cooling
- F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
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- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0369—Localisation of heat exchange in or on a vessel
- F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
- F17C2227/0383—Localisation of heat exchange in or on a vessel in wall contact outside the vessel
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- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
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Abstract
为了填充用于安全气囊的气体生成器,容器在极冷状态下在适当的压力下以液化的气体或者气体混合物填充。在容器关闭和对环境温度加热之后,由于填充气体的加热,容器内的填充压力成倍地升高。缺点是,蒸发的液态气体的精确计量可能是难的。为了尽可能地填充入精确规定的气体量,按本发明建议,将在配量容器中的填充气体或者至少一种填充气体成分通过与热交换介质的热接触置于一个温度上,该温度低于填充气体或者填充气体的沸点但高于凝固点,同时该温度在待填充的容器内部保持低于配量容器内的温度。填充气体可以通过按本发明的装置以高可靠性计量并且待填充到容器中的气体量和/或待填充气体混合物的组成被可靠地预先设定。
Description
技术领域
本发明涉及一种用于以填充气体或填充气体混合物填充容器的方法以及装置。
背景技术
为了能够存储具有高存储密度的气体,在高压下或者以液体状态或者气态进行存储。以液体状态的存储虽然实现极高的存储密度,但是它仅在承受或多或少的大的蒸发损失的情况下才可能,这种蒸发损失即使在好的绝热容器中也不可避免。对于气体的压力存储目前主要使用空气压缩机,其允许在压力容器中大约200至300bar的工作压力。但该空气压缩机在结构和运转中是非常耗费的,此外新的应用例如在燃料电池技术或用于安全气囊的气体发生器中的应用导致需要700bar或以上高得多压力。这种压力通过传统的压缩技术不能实现或通过很高花费才能实现。
从EP 0033386A1和WO 99/05465中已知用于填充压力容器的方法,在此方法中填充气体在输送给要填充的压力容器之前被液化或者在气体状态下冷却到稍微高于其沸点温度的温度。液氮在此用作优选的冷却剂。从WO 02/066884A1中已知另一种改进的方法,在此方法中同样是压力容器在输送冷的或液化的填充气体前和/或输送中被冷却,例如,通过浸入到液氮池中。在填充过程结束后,压力密封地封闭该压力容器。由于气体体积通过冷凝-在相同不变的压力下-与温度大概成比例,以此种方式有效存储容量的增大达到大约2-3倍。随着气体的逐渐加热,压力容器中的压力急剧升高。这种方法例如适用于低成本地填充允许700bar或以上压力的压力容器。这种方法特别适合填充小容量的罐,特别是用于安全气囊的气体发生器、用于气体驱动的汽车或燃料电池系统的燃料容器。
但在填充液化气体的过程中出现了以下问题,即在沸点状态下的填充气体的操作非常困难。特别是精确确定已填充的燃料量以及因此在填充气体混合物情况下,在已填充容器中各个气体成分的混合比例的精确标定几乎无法实现。
发明内容
因此本发明的目的在于,提供一种用于以气体或气体混合物成分填充压力容器的方案,其中已填充的气体量尽可能精确地确定。
按本发明的方法,亦即待填充的容器与配量容器流体连接。该配量容器借助于热交换介质保持在一个温度上,此温度低于填充气体以及填充气体成分的沸点,但高于其熔点温度或其凝固点。同时待填充的容器处于与相同或其他类型的热交换介质的热交换中,并保持在一个低于配量容器中的温度的温度上。填充气体或填充气体成分在配量容器中以液态、但不在沸点状态下存在并且可非常精确地确定它的量。同时在待填充容器中的低温防止填充过程中气体的蒸发,并且由于低温泵效应有利于气体从配量容器输送到待填充容器中。
有利地,用于配量容器和/或待填充容器中的热交换介质涉及一种液化气体,其沸点可通过压力调节改变。因此气体温度可在宽范围内根据需要精确地调节,并且特别地保持在一个远远大于填充气体的凝固点或凝点的值上,因此填充过程不会被冰沉积物阻碍。
在本发明的合乎目的的构造中规定,用同样的热交换介质给待填充的容器调温,所述热交换介质也用于给配量容器调温,其中各容器之间的温差通过热交换介质不同的压力实现。
在本发明的另一种实施方式中规定,用一种或多种填充气体成分部分地填充的容器紧接着用保持气体状态的填充气体成分填充。气态的填充气体成分相对于其它的填充气体成分的混合比例可有利地通过气态成分的气体压力变化来进行调节。在加热状态下已填充的容器而后用气体混合物填充,该气体混合物的组成可非常精确地已知。
本发明的目的还通过一种用于以填充气体或者填充气体混合物填充容器的装置实现,此装置设有一个配量容器,该配量容器在热交换面上与热交换介质进行热接触,并且配备用于以液体或者气体状态输入填充气体或一种填充气体成分的填充气体输入管道和一个用于与待填充容器相连接的填充管道。调温的配量容器使液化的填充气体或填充气体成分在低于其沸点温度下的输送成为可能并且因此没有在填充气体蒸发时出现的干扰的影响。
在按本发明装置特别合乎目的的构造上,配量容器设置在一个设置用于容纳热交换介质的压力容器内。在压力容器内部,配量容器容纳在由热交换介质组成的池内,该池的温度通过在压力容器内压力的变化可以有目的地调节。在热交换介质和填充气体之间的热传递通过配量容器的壁实现。
本发明另一种有利的构造规定,待填充的容器在其填充期间容纳在一个可用热交换介质填充的池中。
为了能够尽可能可靠地控制填充气体以及填充气体成分的输入,配量容器有利地配备一个用于确定在配量容器中的液位的控制装置。在此其例如可以涉及一个溢流口或涉及从一个规定的填充高度开始阻止填充气体输入的测量和控制装置。
附图说明
借助于附图(图1)将更详细地解释本发明的实施例。
具体实施方式
用于以填充气体或填充气体混合物填充容器2的装置1包括一个配量容器3,该配量容器容纳在一个压力容器4的内部。在该配量容器的上部区域一用于输入气态填充气体的气体输入管道6通入到配量容器3中。该气体输入管道6与排气管道7相连接。气体输入管道6与排气管道7可以通过阀8、9关闭或开启。在配量容器3的中部区域通入一用于输入液态填充气体的液态气体输入管道11。该液态气体输入管道11设有一个阀12,该阀可借助于一控制装置13根据在配量容器3内部的、测量出的液位14控制。此外,所述配量容器3配备一填充管道15,该填充管道在装置1的运行状态下通过一可拆卸的连接装置10生成用于填充容器2的流体连接。填充管道15配备一个截止阀16。
设有一个-这里仅部分示出的-绝热体17的压力容器4配备一个用于热交换介质的输入管道18。在该输入管道18中设置一个阀19,该阀可借助于一控制装置20根据在压力容器4内部的、测量出的液位14控制。在所述压力容器4的上部区域通入一个气体排出管道22。用于压力控制的装置23保证在压力容器4内保持一定的压力。
装置1的工作原理将借助于一个示例更详细地解释。在该示例中,容器2以尽可能精确计量过的氩和氦的量填充。在此配量容器3首先通过液态气体输入管道11填充入液态的氩,所述氩以液体状态从一个在此未示出的存储容器中取出。为了保证所述氩在配量容器中以液体状态存在,在压力容器4中的配量容器3容纳在由冷却剂例如液态氮组成的池中。所述液态氮通过输入管道18供给压力容器。在配量容器3和液态氮池之间的热交换通过配量容器3的壁实现。在热传递时压力容器4内的氮部分地蒸发并且因此增大在压力容器4中的压力。借助用于压力调节的装置23在压力容器中的压力保持为一个规定的、例如大约3bar的值。在所述压力下压力容器4中的液态氮在温度大约是零下187℃,所述温度位于标准大气压条件下或者更高的压力下氩的沸点(零下186℃)以下,但位于氩的熔点以上(零下189℃)。因此配量容器3内的、在例如大约1.1bar小的过压之下的氩以液态但不以蒸发的状态存在。在所述状态下液态氩容易操作并且特别使配量容器4的精确的填充直到预定的液位14成为可能。
如果以这种方式用规定的液态氩的量填充配量容器3,阀12完全关闭并且阀16开启。氩流入容器2中。该容器2容纳在一个绝热的浸池容器25中并且同样地用液态氮进行冷却。但氮在浸池容器25中具有一个比在压力容器4中更低的压力,例如大气压力,并且因此在较低温度下存在。因此在容器1中的氩蒸气压力总是低于配量容器2中的压力,这样填充过程就不因为蒸发的氩受阻碍。如果在浸池容器25中的液态氮在大气压力下存在,其温度为零下196℃,并且充入容器2中的氩凝固。由此产生的吸入效应(低温泵效应)支持并加速填充过程。
此外,如果连接装置10不是气密地而是按一种注射形式构成,用液态氩填充容器也是可能的。此外,代替前面所述的用液态氩填充配量容器3,氩可以以气体状态通过气体输入管道6输入,所述氩在配量容器3内通过热输出经过配量容器3的容器壁液化。代替容纳配量容器3的压力容器4或者对所述压力容器进行补充,配量容器3内的温度也可以通过其它技术例如通过热交换器进行调节。
在液态氩填充入容器2内以后,进行另一种气体的计量,所述气体可以以液体或气体状态输入。在示例中气态的氦通过气体输入管道6进入到配量容器3中。对输入气体量的控制在这里通过气体输入管道6或配量容器3内的压力调节进行。氦在配量容器3中以气体状态保持。在配量容器3中中间存储的氩完全填充到容器内以后,可以进行氦的计量,但也可能的是,即在氩-填充容器2期间已经通过气体输入管道6进行氦的输入,并且因此由于气体压力总体上加速容器2的填充。
在氦填充结束以后,截止阀16关闭,封闭容器2并与连接装置10分离。配量容器3通过开启阀9释放压力,并且装置1可用于另一个容器的填充。
容器1可以以另外一种操作方式在填充氩之后与装置1分离并且被运送到另外一个填充装置处,然后在所述填充装置中进行氦的填充。由于在容器1内低的氩蒸气压力在运送过程中几乎没有氩从容器2中泄露,即使用于运送过程的容器没有关闭。这种操作方式具有的优点是,为此可以使用已经存在的氦填充装置。装置1也适合于用由两种以上成分组成的气体混合物填充容器。在这种情况下各个成分逐渐地以上述的方式计量。装置1以低的填充压力和可精确地预先计算出的最终压力实现容器2精确而快速的填充。
Claims (8)
1.一种用于以填充气体或者填充气体混合物填充容器(2)的方法,其中:
使在一配量容器(3)内的填充气体或者填充气体成分与一热交换介质热接触并且保持在一个低于其沸点且高于其凝固点的温度上,
借助于热交换介质将待填充的容器(2)置于一个低于配量容器(3)内温度的温度上,并且
接着用来自于配量容器(3)中的填充气体或者填充气体成分填充待填充的容器(2)。
2.按权利要求1所述的方法,其特征在于,用于配量容器(3)和/或待填充容器的热交换介质是一种液化的气体,并且通过调节其压力设定热交换介质的一个预先设定的温度。
3.按权利要求1所述的方法,其特征在于,配量容器(3)和待填充容器(2)之间的温度差通过相应热交换介质的不同的压力实现。
4.按权利要求1所述的方法,其特征在于,以一种或多种填充气体成分部分填充的容器(2)接着以保持气体状态的填充气体填充。
5.按权利要求4所述的方法,其特征在于,所述气态的填充气体成分与其它填充气体成分的混合比例通过输送到容器(2)的、气态的填充气体成分的压力变化进行调节。
6.一种用于以填充气体或者填充气体混合物填充容器(2)的装置,包括一个在热交换面上与热交换介质处于热接触的配量容器(3),并且该配量容器配备用于以液体或者气体状态输入填充气体或一种填充气体成分的气体输入管道(6、11)和一个用于与待填充容器(2)相连接的填充管道(15),其特征在于,待填充的容器(2)在其填充时容纳在一个可用热交换介质填充的池(30)中。
7.按权利要求6所述的装置,其特征在于,所述配量容器(3)容纳在一个设置用于容纳热交换介质的压力容器(4)中。
8.按权利要求6所述的装置,其特征在于,所述配量容器(3)配备一个用于确定配量容器中液位(14)的控制装置(13)。
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CN101315545B (zh) * | 2008-06-27 | 2010-06-09 | 浙江大学 | 一种加氢站高效加氢的三级氢气加注系统 |
JP5332933B2 (ja) * | 2009-06-17 | 2013-11-06 | トヨタ自動車株式会社 | 水素充填システム |
CN102494514B (zh) * | 2011-12-09 | 2014-10-15 | 张立永 | 冻堆 |
JP6580032B2 (ja) | 2013-05-17 | 2019-09-25 | インテグリス・インコーポレーテッド | 高圧bf3/h2混合物の製造 |
CN104075104B (zh) * | 2014-06-24 | 2016-02-10 | 北京控制工程研究所 | 卫星电推进系统热增压氙气加注方法 |
DE102014112059A1 (de) * | 2014-08-22 | 2016-02-25 | Proton Motor Fuel Cell Gmbh | Brennstoffzellensystem-Reaktionsgasbehälter mit optimierter Raumausnutzung |
WO2017181180A1 (en) * | 2016-04-15 | 2017-10-19 | Scott Technologies, Inc. | Real time analysis logging of various gases and contaminants for specific breathing air cyclinders |
ITUA20163553A1 (it) * | 2016-05-18 | 2017-11-18 | Vrv S P A | Contenitore di stoccaggio, trasporto e distribuzione di gas liquidi o liquefatti |
CN107747678A (zh) * | 2017-11-13 | 2018-03-02 | 国网内蒙古东部电力有限公司检修分公司 | 一种极寒地区高压电气设备混合气体补气装置 |
CN109444218B (zh) * | 2018-12-17 | 2024-02-20 | 西南科技大学 | 一种氧化动力学反应中改进的环境状态模拟装置及使用方法 |
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