CN114060721A - 用于填充液化气体的设备和方法 - Google Patents
用于填充液化气体的设备和方法 Download PDFInfo
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- CN114060721A CN114060721A CN202110895195.0A CN202110895195A CN114060721A CN 114060721 A CN114060721 A CN 114060721A CN 202110895195 A CN202110895195 A CN 202110895195A CN 114060721 A CN114060721 A CN 114060721A
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- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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Abstract
本发明涉及用于填充液化气体的设备,该设备包括流体回路,该流体回路设置有用于液体输送的第一管道和用于气体输送的第二管道,该第一输送管道包括旨在连接到液化气体源的第一端部和旨在连接到待填充的储罐的第二端部,第二输送管道包括旨在连接到液化气体源的第一端部和旨在连接到待填充的储罐的第二端部,回路包括将第一和第二管道连接的第三管道,以及通过阀组连接到第一和第二管道的排放装置,该回路包括用于控制回路的管道中的流体流的阀组,该设备包括用于流体回路的气体吹洗的系统,其包括第一加压气体源和通过阀组将第一加压气体源并联连接到第一和第二管道的第一吹洗管道组。还涉及使用上述设备为低温流体的储罐填充液化气体的方法。
Description
技术领域
本发明涉及一种用于填充液化气体的设备和方法,液化气体特别是液态氢。
更具体地,本发明涉及一种用于填充液化气体的设备,该设备包括流体回路,该流体回路设置有用于液体输送的第一管道和用于气体输送的第二管道,该第一管道包括旨在连接到液化气体源的第一端部和旨在连接到待填充的储罐的第二端部,该第二管道包括旨在连接到液化气体源的第一端部和旨在连接到待填充的所述储罐的第二端部,该回路包括将第一和第二输送管道连接的至少一个第三输送管道,以及通过由一个或多个安全阀构成的阀组连接到第一和第二输送管道的排放装置,该回路包括用于控制回路的管道中的流体流的由一个或多个阀构成的阀组,该设备包括用于回路的气体吹洗的系统。
背景技术
目前,低温流体的填充通常借助于两个储罐之间的输送来进行,或者借助于输送泵或者借助于压力差(其在下游和上游之间是正的)来进行。例如,液化天然气站可从装有输送泵的油罐卡车中填充。液氮或液氧等流体也是如此。对于密度非常低的低温液体如氢或氦,简单的压力差就可达到足够的流量。在大多数情况下,通过蒸发一些流体在下游储罐中产生过压。下游(或“消费者”)储罐的安装提供了多种功能:分子储存、借助蒸发器加压以便以适当的压力和流量向客户的应用提供分子、在储罐出口加热分子、在输送前后惰性化(在卡车和固定储罐之间的)输送管线。因此,有必要在现场(在“消费者”所在地)具有:气态氢和氮以及相关的控制装置(阀、安全构件、管道等);用于通过其排放装置排放残余气体的系统,出口通常位于储罐上方;至地面的连接装置;用于安全方面的仪表气体的供应装置等。大多数低温设施都是大型固定系统(几立方米到几十立方米)。
当前的架构和方法(绝大多数是工业的)不适合在车辆上使用。这是因为将固定设施的所有上述功能转置到车辆上会导致在额外的车载质量和体积方面过于严格的限制。
对于快速填充而言,使卡车和储罐之间的管线惰性化所需的时间太长(超过30分钟)。车载液化氢技术发展的障碍之一部分是由于缺乏易于部署和满足以下要求的填充方案:惰性化和吹洗系统的所有(柔性或固定)管线和部件;通过干燥惰性气体(氮气、氩气、氦气等)排出空气;用气态氦或氢填充这些管线,以避免其他分子冻结/凝固。另一个要求是控制回路的冷点,以便抑制液态空气(特别是液态氧气)的形成及其与易燃物质的接触。另一个要求是精确控制液化气体的注入温度。另一个要求是专用的排放系统。另一个要求是可能的填充方法的灵活性:要么是一条填充管线(称为“双边”填充的填充),要么是两条填充管线:一条用于输入液体,另一条用于输出气体(称为“单边”填充的填充)。另一个要求是单个位置的集中控制,特别是通过集中停止按钮的安全装置(主储罐的隔离),阀门的简单操纵(如果可能,非手动的操纵,因为手动低温阀通常很难启动)。另一个要求是能够脱接(分离)装置的功能(一方面是储存和输送),另一方面是辅助功能(例如惰化,另一方面是排出残余流体)。
发明内容
本发明的目的是克服现有技术的所有或一些上述缺点。
为此,根据本发明的、此外根据以上前序部分中给出的一般定义的设备的基本特征在于,吹洗系统包括第一加压气体源和由一个或多个吹洗管道构成的第一吹洗管道组,该第一吹洗管道组通过由一个或多个阀构成的阀组将所述第一加压气体源并联连接到该第一输送管道和该第二输送管道。
此外,本发明的实施例可包括以下特征中的一者或多者:
-该吹洗系统包括第二加压气体源和由一个或多个吹洗管道构成的第二吹洗管道组,第二吹洗管道组通过由一个或多个阀构成的阀组将第二加压气体源并联连接到该第一输送管道和该第二输送管道,
-该吹洗系统包括第三加压气体源以及由一个或多个吹洗管道构成的第三吹洗管道组,该加压气体特别是氢气,该第三吹洗管道组通过由一个或多个阀构成的阀组将该第三加压气体源并联连接到该第一输送管道和该第二输送管道,
-该吹洗系统包括抽吸构件以及由一个或多个吹洗管道构成的第四吹洗管道组,该抽吸构件特别是真空泵,该第四吹洗管道组通过由一个或多个阀构成的阀组将该抽吸构件连接到该第一输送管道和该第二输送管道,
-该吹洗系统包括至少一个管道,该至少一个管道对于这些由一个或多个吹洗管道构成的吹洗管道组中的全部或一部分而言是公共的,
-用于液体输送的第一输送管道包括隔离和/或流量控制阀,
-这些由一个或多个吹洗管道构成的吹洗管道组中的一者或多者在用于液体输送的第一输送管道的隔离和/或流量控制阀的一侧或两侧上连接到该第一输送管道,
-用于液体输送的第一输送管道包括液-气混合器,该设备包括气体源和气体注入管道,该气体注入管道将该气体源连接到该液-气混合器并且设置有由一个或多个阀构成的阀组,
-该设备配置在外壳或壳体中,用于液体输送的第一输送管道的端部和用于气体输送的第二输送管道的端部通过可移除的连接器连接到所述壳体,
-该设备包括液化气体源,该液化气体源连接至用于液体输送的所述第一输送管道的第一端部并连接至所述第二输送管道的第一端部,
-所述第二输送管道包括压力调节阀,
-所述第二输送管道的压力调节阀构造成通过控制经由该第二输送管道离开该待填充的储罐的气体流的压力来控制该待填充的储罐在其填充期间的压力。
-该第二输送管道的压力调节阀能被关闭,以允许该第二输送管道被隔离,特别是为了惰性化和/或密封性测试的目的而关闭。
本发明还涉及一种使用根据以上或以下任一特征的设备为低温流体储罐填充液化气体的方法,该方法包括将该低温流体储罐连接到第一和第二输送管道的第二端部的步骤,该方法包括经由用于液体输送的第一输送管道将液体输送到该液体储罐中的步骤。
根据其他可能的特定特征,该方法包括以下步骤中的至少一者:
-调节输送到储罐中的液体的流量,
-经由第二输送管道从储罐向源例如液化气体源排放气体流,
-通过将确定量的气体注入到向该储罐中输送的液体流中而在输送步骤期间对所述液体流进行加热,
-通过排放装置排出回路中过剩的加压气体。
本发明还可涉及落在权利要求的范围内的、包括以上或以下特征的任何组合的任何替代设备或方法。
附图说明
参考附图阅读下面的描述,进一步的具体特征和优点将变得显而易见,其中:
图1示出了总体示意图和局部视图,示出了根据本发明的填充设备的示例性构造和使用;
图2示出了根据本发明的填充设备的示例性内部构造和使用的示意性局部视图;
图3是示出了根据本发明的填充设备的混合器的细节的示意性局部视图。
具体实施方式
如图1和图2所示,用于填充液化气体的设备1包括例如容纳在(固定的或可移动的)壳体2或外壳中的电路和部件或功能。该组件2尤其可构成填充站,作为液体源的储罐4(例如供应卡车)和待填充的储罐5(例如卡车的待填充的储罐)连接到该填充站。
连接器优选为快速连接器类型,低温连接器可以为“约翰斯顿(Johnston)”类型或任何其他合适的技术。特别是在这些连接器处或附近,可提供带有一个或多个自关闭(断开)阀的安全系统,以防意外拉动。
这意味着该组件2形成优选为移动式的储罐4(例如,运输罐车)与应用(例如,待填充的车辆5)之间接口。
从图2中可以看出,该设备包括流体回路,该流体回路设置有用于液体输送的第一管道3,该第一管道3包括旨在连接到液化气体源4(特别是供应储罐的液相)的第一端部13,以及旨在连接到待填充的储罐5(特别是其液相)的第二端部23。
源4典型地包括上方为气相的液化气体的储器。该源被加压或可被加压,该压力可能是驱动流体被输送的力。也可设想输送泵。
该回路包括用于气体输送的第二管道6,其包括旨在连接到液化气体源4(例如连接到其气相)的第一端部16,以及旨在连接到待填充的所述储罐5(例如连接到其气相)的第二端部26。
该回路包括至少一个第三输送管道7,该第三输送管道7将第一输送管道3和第二输送管道6连接并设有阀14。该第三管道7尤其被设置成朝向排放装置(下面描述的排放装置8)收集排放气体。
该用于填充液化气体的设备还包括排气装置8,该排气装置8经由未示出的由一个或多个安全阀构成的一组阀(对压力敏感并构造成向排气装置8排放回路中的异常过压的阀)连接到第一输送管道3和第二输送管道6。排放装置8优选位于设备的上方,但是如果需要可以偏置/错位。该排放装置也可用于对储罐4和5减压。
该回路包括由一个或多个阀构成的一组阀,其用于控制回路的管道中的流体流。例如,用于液体输送的第一管道3包括流量控制和/或隔离阀29。
这种构架允许储罐5的单流(仅第一液体管道3)或双流(输送液体的第一管道3和排放气体的第二管道6)填充。
该回路还可包括管线39,该管线39的一个端部连接到排放装置8(或第三管道7),并且一个或多个端部44设置有连接构件,该连接构件用于例如在第二端部23和26没有连接到待填充的储罐5上时接收第二端部23和26。在第二端部23和26连接到端部44的构型中,也可预冷管线,和/或对端部23、26和44除冰,以便避免冰的形成和/或以便干燥连接器。
隔离和/或流量控制阀29用于控制从储罐4到储罐5的流体(特别是液体)的主要流量。隔离和/或流量控制阀29可用于控制待填充的储罐5的气体回流(如果仅使用单流填充)和/或在填充之前对储罐5减压。该隔离和/或流量控制阀29也可用于惰性化的目的,和/或对全部或部分回路进行密封性测试。
在返回管线6上,可设置压力调节器42(优选压力控制阀),以使得在填充期间控制储罐5中的压力(来自储罐5的返回流)成为可能。如果合适的话,该压力调节器42也可充当隔离阀,就像为了惰性化和/或密封性测试的目的而串联设置的阀43一样。
该回流压力控制阀42可通过稀释和检测回路、一个或多个储罐或填充喷嘴的一个或多个连接器中的泄漏来用于惰性化。
该设备包括用于对回路进行气体吹洗的系统,用于惰性化、吹扫或密封性压力测试。
吹洗系统包括第一加压气体源9(加压气体特别是氮气),以及由一个或多个吹洗管道10、22、7、41、40、28构成的第一吹洗管道组,该第一吹洗管道组通过由一个或多个阀11、12、14、15构成的阀组将第一加压气体源9并联连接到第一输送管道3和第二输送管道6。
吹洗系统优选地包括第二加压气体源17,该加压气体特别是氦气或氢气,以及由一个或多个吹洗管道18、7、22、40、41、28构成的第二吹洗管道组,第二吹洗管道组通过由一个或多个阀11、12、14、15构成的阀组将第二加压气体源17并联连接到第一输送管道3和第二输送管道6。该第二源17可用于惰性化和/或加热整个回路或回路的一部分,特别是用于输送低温液体(温度通常低于80K)的管道3。
吹洗系统优选地包括第三加压气体源38(该加压气体特别是氢气),以及由一个或多个吹洗管道21、7、22、40、41、28构成的第三吹洗管道组,该第三吹洗管道组通过由一个或多个阀11、12、14、15构成的阀组将第三加压气体源38并联连接到第一输送管道3和第二输送管道6。
吹洗系统还可包括抽吸构件24,特别是真空泵,以及由一个或多个吹洗管道7、22、40、41、28构成的第四吹洗管道组,第四吹洗管道组通过由一个或多个阀11、15、12、14构成的阀组将抽吸构件24连接到第一输送管道3和第二输送管道6。
如图所示,吹洗系统可包括至少一个管道,该管道对于所有或一部分的由一个或多个吹洗管道构成的吹洗管道组而言是公共的。
这种构架使得可通过用例如用于密封性测试或吹扫或排空操作的前述气体之一吹洗和/或稀释整个或部分回路来容易地惰性化。一个或多个吹洗管道也可用于对储罐5减压(例如在仅使用单流填充之前)和/或用于对所述系统的所有或一部分管道进行冷却。
如图所示,这些由一个或多个吹洗管道构成的吹洗管道组中的一者或多者优选在用于液体输送的第一输送管道3的隔离和/或流量控制阀29的两侧上连接到第一输送管道3。该阀29尤其可被构造成控制进入待填充的车辆的储罐5的液体的流量。流量计36(例如集成的质量流量控制器)特别是可于下游位置设置在管道3上,以便控制该阀29。阀29优选地被远程控制,并且可以是例如针阀类型。如果需要在第二输送管道6上设置第二流量测量机构136(例如质量流量计),则可例如通过第二流量测量机构136来测量(从待填充的储罐5经由第二输送管道6返回的)回流气体的量。该第二流量测量机构136可具有并联的一个或多个流量计,以便增加其流量测量范围和/或优化流体的通过,以满足预冷待填充的储罐5的要求,或者允许精确检测填充的结束。
止回阀33可设置在第一输送管道3上,例如位于第一端部13和隔离和/或流量控制阀29之间。
同样,止回阀可设置在第二输送管道6上(为了简单起见未示出)。
这允许在第一端部13、16或在第二端部23、26对回路的一部分进行单独和独立的吹洗。
特别地,这种回路和阀构架允许例如在液体源4和隔离/控制阀29之间对用于液体输送的第一管道3进行惰性化。这种构架还允许对位于外壳或站2中的回路以及远至排放装置8的排放回路进行吹洗(惰性化)。这种构架还允许吹洗(惰性化)下游部分的回路(待填充的储罐5处的回路)以及在适当情况下惰性化该储罐5。
这种构架还允许吹洗(惰性化)整个回路。
同样,这种构架使得预冷全部或部分的回路或待填充的储罐5成为可能。
如图所示,用于液体输送的第一管道3优选地包括液-气混合器31和气体源32以及气体注入管道30,该气体注入管道将气体源32连接到混合器31并且设置有由一个或多个阀34构成的阀组。这允许用气体流加热进入的液体流,以便提供饱和条件(下游储罐中的最小压力)。图3示意性地示出了示例性混合器。加压气体(例如300K和5巴至10巴的氢气)通过横向管道注入输送液体(例如21K和5巴至10巴压力的液态氢)的第一液体管道3(该管道优选在真空中绝热)。所得到的下游混合物可具有确定的温度,例如28K,以及5巴至10巴的类似压力。在适当的情况下,来自其中一个储罐的气化气体可被用于有益的用途,并作为混合气体重新使用。
该设备可例如在第二端部23、26具有由一个或多个压力和/或温度传感器35构成的压力和/或温度传感器组。这些温度和/或压力数据可用于自动化所有或一些功能,例如用于自动检测被填充储罐5可能的过度填充。
这种结构允许元件汇集,特别是允许对阀和绝热低温部件的数量进行限制。这些构件可在回路的中心部分被定位和组合在一起。所有或一些阀和传感器优选由一单元远程控制或监控。
该设备具有许多优点,特别是允许将控制和安全设备(排放装置8、传感器35、阀等)汇集在一起。
本发明允许供应车辆上的构件限于那些严格必要的构件,因此允许系统的密度最大化,同时提供所有必要的主要和次要功能。该设备也可轻松移动。
该设备还可包括压缩机,用于回收来自待填充的储罐5或来自环境温度下的储罐的气化(蒸发/沸腾)气体。这种回收和压缩的气体可用于例如供应热交换器/加热器,例如第一输送管道3上的加热器37。
该设备可包括储罐4和/或5与壳体2之间的接地连接部(未示出),以确保各种设备处于相同的电位。外壳或壳体2本身可接地。
该设备可包括在储罐4和/或5与壳体2之间的未示出的气动控制流体(特别是氮气)连接部,以便允许来自壳体2的控制,用于安全目的和/或用于控制例如储罐4和/或5的阀的打开和/或关闭控制。以同样的方式,可建立信号(电的或其他的),以用于在壳体2与所述一个或多个储罐4和5之间进行通信。
因此,在适当的情况下,该设备可具有以下特征或功能中的全部或一部分:
-填充/惰性化过程/安全管理等的集中控制;
-使用回流压力控制阀42、通过稀释和检测泄漏来惰性化;
-用于朝向主储罐4的管线、用于输送外壳或模块2、用于待填充的储罐的单独的惰性化能力;
-在操作条件下(惰性化和/或冷却等)放置待填充的储罐5的可能性;
-将冷却或输送气体作为混合/加热气体进行有利的利用;
-测量气体流量,特别是在待填充的储罐5的出口处进行测量。
Claims (15)
1.一种用于填充液化气体的设备,该设备包括流体回路,该流体回路设置有用于液体输送的第一输送管道(3)和用于气体输送的第二输送管道(6),该第一输送管道包括旨在连接到液化气体源(4)的第一端部(13)和旨在连接到待填充的储罐(5)的第二端部(23),该第二输送管道包括旨在连接到该液化气体源(4)的第一端部(16)和旨在连接到待填充的所述储罐(5)的第二端部(26),该流体回路包括连接该第一输送管道(3)和该第二输送管道(6)的至少一个第三输送管道(7)以及通过由一个或多个安全阀构成的安全阀组连接到该第一输送管道(3)和该第二输送管道(6)的排放装置(8),该流体回路包括用于控制该流体回路的管道中的流体流的由一个或多个阀构成的阀组,该设备包括用于该流体回路的气体吹洗的吹洗系统,其特征在于,该吹洗系统包括第一加压气体源(9)和由一个或多个吹洗管道(10,22,7,40,41,28)构成的第一吹洗管道组,该第一吹洗管道组通过由一个或多个阀(11,12,14,15)构成的阀组将所述第一加压气体源(9)并联连接到该第一输送管道(3)和该第二输送管道(6)。
2.根据权利要求1所述的设备,其特征在于,所述吹洗系统包括第二加压气体源(17)和由一个或多个吹洗管道(18,7,40,41,22,28)构成的第二吹洗管道组,该第二吹洗管道组通过由一个或多个阀(11,12,14,15)构成的阀组将该第二加压气体源(17)并联连接到该第一输送管道(3)和该第二输送管道(6)。
3.根据权利要求2所述的设备,其特征在于,所述吹洗系统包括第三加压气体源(38)以及由一个或多个吹洗管道(21,7,40)构成的第三吹洗管道组,该加压气体特别是氢气,该第三吹洗管道组通过由一个或多个阀(11,12,14,15)构成的阀组将该第三加压气体源(38)并联连接到该第一输送管道(3)和该第二输送管道(6)。
4.根据权利要求1至3中任一项所述的设备,其特征在于,所述吹洗系统包括抽吸构件(24)以及由一个或多个吹洗管道(25,7,22,40,41,28)构成的第四吹洗管道组,该抽吸构件特别是真空泵,该第四吹洗管道组通过由一个或多个阀(11,12,14,15)构成的阀组将该抽吸构件(24)连接到该第一输送管道(3)和该第二输送管道(6)。
5.根据权利要求1至4中任一项所述的设备,其特征在于,该吹洗系统包括至少一个公共管道(22),该至少一个公共管道对于由一个或多个吹洗管道构成的吹洗管道组中的全部的或一部分的吹洗管道组而言是公共的。
6.根据权利要求1至5中任一项所述的设备,其特征在于,用于液体输送的所述第一输送管道(3)包括隔离和/或流量控制阀(29)。
7.根据权利要求6所述的设备,其特征在于,由一个或多个吹洗管道构成的吹洗管道组中的一者或多者在用于液体输送的第一输送管道(3)的隔离和/或流量控制阀(29)的一侧或两侧上连接到该第一输送管道(3)。
8.根据权利要求1至7中任一项所述的设备,其特征在于,用于液体输送的所述第一输送管道(3)包括液-气混合器(31),该设备包括气体源(32)和气体注入管道(30),该气体注入管道将该气体源(32)连接到该液-气混合器(31)并且设置有由一个或多个阀(34)构成的阀组。
9.根据权利要求1至8中任一项所述的设备,其特征在于,该设备配置在外壳或壳体(2)中,用于液体输送的该第一输送管道(3)的端部(13,23)和用于气体输送的该第二输送管道(6)的端部(16,26)通过可拆卸的连接器连接到所述壳体。
10.根据权利要求1至9中任一项所述的设备,其特征在于,该设备包括液化气体源(4),该液化气体源连接至用于液体输送的所述第一输送管道(3)的第一端部(13)并连接至所述第二输送管道(6)的第一端部(16)。
11.根据权利要求1至10中任一项所述的设备,其特征在于,所述第二输送管道(6)包括压力调节阀(42)。
12.根据权利要求11所述的设备,其特征在于,所述第二输送管道(6)的压力调节阀(42)构造成通过控制经由该第二输送管道(6)离开待填充的所述储罐(5)的气体流的压力来控制待填充的所述储罐(5)在其填充期间的压力。
13.根据权利要求11或12所述的设备,其特征在于,该第二输送管道(6)的压力调节阀(42)能被关闭,以允许该第二输送管道(6)被隔离,特别是以便能实现惰性化和/或密封性测试的目的。
14.一种使用根据前述权利要求中任一项所述的设备为低温流体的储罐(5)填充液化气体的方法,该方法包括将该储罐(5)连接到第一输送管道(3)的和第二输送管道(6)的第二端部的步骤,该方法包括经由用于液体输送的该第一输送管道(3)将液体输送到所述储罐(5)中的输送步骤。
15.根据权利要求14所述的方法,其特征在于,该方法包括以下步骤中的至少一者:
-调节输送到该储罐(5)中的液体的流量;
-经由该第二输送管道(6)从该储罐(5)向源排放气体流;
-通过将确定量的气体注入到向该储罐(5)中输送的液体流中而在输送步骤期间对所述液体流进行加热;
-通过排放装置排出所述流体回路中过剩的加压气体。
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