CN104641164A - 用于在储箱上实现压力检测的方法以及储箱充注设备 - Google Patents
用于在储箱上实现压力检测的方法以及储箱充注设备 Download PDFInfo
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Abstract
本发明涉及用于在储箱(例如氢储箱)上实现压力测试的方法以及用于执行根据本发明的方法的设备。根据本发明,储箱(4)经由储箱阀(10)连接至储箱供料管线(3),所述储箱供料管线具有用于使得所述储箱供料管线(3)截止的第一阀(5),在所述储箱(4)经由所述储箱供料管线(3)被充注之前的压力测试的过程中,气态加压媒介的流、尤其形式为氢的气态加压媒介的流经由桥接所述第一阀(5)的旁通管线(7)在所述第一阀(5)关闭的情况下被输送至所述储箱(4),其中,所述媒介的流在所述旁通管线(7)内被节流,以使得在所述储箱阀(10)上作用的储箱供料压力以受控的方式升高,其中,在所述储箱供料压力超过所述储箱(4)内的储箱压力时,尤其所述储箱阀(10)被打开。
Description
技术领域
本发明涉及用于在储箱上实现压力检测的方法,并且本发明涉及根据权利要求8的前序部分的用于向储箱充注气态加压媒介、尤其形式为氢气的储箱充注设备。
背景技术
采用气态氢作为燃料补给燃料的车辆需要专门设计的充注设备,其中所述专门设计的充注设备可以将处于相对高压力(例如700巴)的氢输送到(车辆)储箱或者另一氢储箱内。这种充注站通常包括具有液态氢的储箱或者与可以构成氢储箱的氢管线或其它设施直接相连。因为氢为了充注应当以气态的形式出现,所以充注站通常包括气体缓冲储箱,其中所述气体缓冲储箱自前述(液态氢)储箱供料并且将气态氢保持可用。
为了在向氢储箱(例如,车辆储箱)充注氢时确保周围环境安全(爆炸危险)并且为了提供用于充注过程的标准,由例如多个多家汽车制造商组成的联盟达成了SAE J2601标准。该标准例如提供了针对充注过程的与安全相关的限制以及性能要求。SAE J2601规定了氢动力的车辆在三分钟内充注至700巴,而储箱的温度由此不会高于85℃的温度。
此外,SAE J2601标准规定了在储箱的充注之前执行压力与严密度测试;例如为了确保充注站的储箱供料管线已经正确地连接至待充注的储箱。
储箱内的压力在所述压力测试中被查明。这在充注站方面通过一种短暂的压力脉动(pressure surge)来实现,从而打开所关注的储箱,其中所述储箱由储箱阀(通常单向阀)来确保安全。在储箱供料管线中建立的、然后等于储箱内压力的压力然后在充注站内于特定的时间内(大约5至20秒的等待时间段)被测量,从而确保没有出现压力的明显降低(严密度测试),否则的话这种压力的明显降低将表明一种问题、例如储箱供料管线内的或储箱的连接中的泄漏。
针对压力和严密度测试的压力脉动通常直接在气体缓冲储箱方面通过相对迅速地打开阀来执行,从而管线或储箱管线中的下游元件例如压力变送器、温度计、测流装置、阀以及增压调节器(ramp regulator)完全经受这种压力脉动(大约800至850巴),其中所述相对迅速地打开导致了使得大量压力峰值会出现的大质量流。此外,由于在实际充注过程的开始(在所述等待时间段之后)时的直接由气体缓冲储箱执行的这种压力脉动,在下游元件中经常会出现进一步的压力峰值,这种进一步的压力峰值是由于管线的各部分中的加压的残留体积。在管线以及储箱供料管线中的这种载荷变动导致了下游元件的更加迅速的磨损并且因此导致了更易出现故障以及这些部件的使用寿命的缩短。
另外,在压力脉动时,采用温度、压力或者压降(泄漏)起作用的截止装置通常不再起作用,从而储箱的过热、过充注或者非严密储箱的部分充注在压力脉动的过程中在最差的情况下也可能出现。
发明内容
由此,本发明所要解决的技术问题因此是提供在背景技术部分中提到的方法和装置,其中前述载荷被减小。
该问题通过具有权利要求1的特征的用于在(氢)储箱上执行压力测试的方法来解决。
因此设置成,储箱经由储箱阀与储箱供料管线相连,其中所述储箱供料管线具有用于使得储箱供料管线截止的第一阀,在储箱经由储箱供料管线充注气态加压媒介(例如氢气)之前的压力测试的过程中,媒介的(气态)流(例如氢气流)在第一阀关闭的状态下经由桥接第一阀的旁通管线被输送至储箱,其中,所述媒介的流在所述旁通管线内被节流,从而在储箱阀上作用的储箱供料压力以受控的方式升高,即没有形成压力峰值地逐渐地升高(特别是在预定的时间段内),从而避免了压力峰值或脉动,直至尤其在储箱供料压力超过储箱内出现的压力时储箱阀打开。
有利地,所述节流因而优选地造成了高的压降,由此,媒介(例如氢气)的仅仅小质量的通流量是可能的并且在随后部件上的压力冲击被减小。
在储箱阀的打开之后,储箱内出现的储箱压力然后优选被采用为瞬时的储箱供料压力(由于储箱阀打开之后的压力平衡,储箱供料压力等于储箱压力)。
所述储箱尤其是用于存储气态氢的车辆储箱,其中所述气态氢尤其用作为对车辆提供动力的燃料。
媒介的气态流优选借助于在旁通管线内设置的节流部被节流,也就是说尤其通过使得旁通管线的横截面缩小而被节流,从而在储箱上或在储箱阀上于节流部下游作用的储箱供料压力以受控的方式升高,以便防止所述压力峰值或脉动(见上)。
旁通管线优选可以借助于第二阀被截止,其中所述第二阀优选在节流部的上游设置在旁通管线内,为了在第一阀关闭的情况下执行压力测试,所述第二阀被打开,并且经过旁通管线及其节流部的媒介的流被传输至储箱,媒介的流优选被节流成储箱供料压力在预定的时间段(尤其10秒)内达到储箱压力。
例如,如果储箱完全充满密度为40.2克/升的氢(这在室温对应于大约700巴)并且如果由储箱供料管线在节流部的下游所包围的体积达到1升,则所述节流部使得媒介的流(氢流)优选节流至4.1克/升,这是因为然后确保了储箱供料压力在10秒内升高到700巴以上并且储箱阀因而被打开。
此外,在储箱的储箱阀由于升高的储箱供料压力而打开时、即在储箱供料压力超过在氢储箱内储箱的储箱压力时,旁通管线优选借助于第二阀被截止。
第一阀和第二阀优选被气动地控制。
储箱供料管线内的尤其875巴的预限定最大压力优选在第一阀上游于充注之前出现,也就是说在压力测试的过程中出现。
该最大压力主要由充注站的气体缓冲储箱可用的(媒介或氢)压力确定,并且被标定成其位于期望的最高储箱压力之上,从而可靠地确保储箱的打开以及因此储箱压力的确定。
此外,储箱供料压力优选拾取(检测),从而确定储箱压力,其中在储箱阀的打开之后在储箱供料管线内建立的媒介或氢的储箱供料压力被确定为储箱压力。
在执行压力测试之后并且在储箱(通过压力升高(pressure ramp))的实际充注之前,优选等待特定的时间段(优选5秒至25秒),从而基于储箱供料压力的任何压降可以检测到储箱的连接中的可能的泄漏(严密度测试)。实际的充注过程优选以现有的严密度开始(经过自所确定的储箱压力作为开始值的压力升高)。
此外,根据本发明的技术问题通过具有权利要求8的特征的用于向储箱充注加压气态媒介、尤其氢形式的加压气态媒介的充注设备来解决。
因此,充注设备(充注站)包括具有第一阀的储箱供料管线,其中所述第一阀用于使得储箱供料管线截止,所述储箱供料管线被设计成在所述第一阀的下游以导流的方式连接至待充注的储箱的储箱阀。此外,充注设备包括旁通管线,其中所述旁通管线桥接所述第一阀并且包括第二阀以及节流部(例如旁通管线横截面的缩窄),所述节流部被设计成在储箱经由第一阀被充注之前在第一阀关闭且第二阀打开的情况下使得经由所述旁通管线传输的媒介的(气态)流(例如氢流)节流,从而在所述储箱供料管线内于节流部下游建立的储箱供料压力以受控的方式升高,即相对缓慢地升高(尤其是在预限定的时间段内)(见上)。
旁通管线相应地包括用于桥接储箱供料管线的两个端部,第一端部在第一阀的上游并且第二端部在第一阀的下游,所述第一和第二端部以导流的方式连接至储箱供料管线。
节流部优选在旁通管线内设置在第二阀的下游。
由此,本发明尤其使得用于向储箱充注气态氢(以及其它气态且加压的媒介)的充注设备中的气体输送部件的载荷最小化并且通过避免由于突然压缩而造成的温度升高来最小化保压测试中的故障失效可能性。此外,尤其由于压力脉动所充注的气体量被最小化,从而对于满的储箱而言实际上没有多余的质量流出现到储箱中。
附图说明
借助于附图通过示意性实施例的实例附图的以下说明将解释本发明的其它细节和优点。
在各附图中:
图1示出了根据本发明的充注设备的示意图;并且
图2示出了根据现有技术所执行的压力与严密度测试中储箱供料管线中的与时间相关的压力曲线。
具体实施方式
图1示出了充注设备(充注站)的示意图,其具有增压阀(rampvalve)1,其中所述增压阀借助于增压调节器被控制。在增压阀1的下游设置制冷机2(铝冷灌装),其将(例如来自气体缓冲储箱)流经增压阀1的氢流调温至尤其-40℃。储箱供料管线3以导流的方式与制冷机2相连,其中所述储箱供料管线3在制冷机下游包括第一、尤其气动阀5、在所述阀之后是手动阀6。旁通管线7设置成桥接所述第一阀5和所述手动阀6,所述旁通管线以导流的方式连接至储箱供料管线3。旁通管线7包括第二、尤其气动阀8,在其之后是节流部9。在储箱供料管线3内,测流装置13在节流部9的下游设置。在测流装置13的下游,烟囱管线15从储箱供料管线3分支出。烟囱管线15经由安全阀14连接至烟囱,其中所述烟囱用于将过多的氢(或者过多的媒介)可靠地排到周围环境中(例如,以便降低储箱供料管线3中的过高压力)。在烟囱管线15的分支部的下游,储箱供料管线3出于安全的原因还包括保险接头12以及其后的带有储箱接头的储箱软管11,其中所述保险接头在(例如汽车带着相连的软管而驶离)被牵拉时打开,其中所述储箱接头可以连接至储箱(氢储箱)4。为了储箱4的关闭,储箱4由储箱阀10(单向阀)确保安全。
图2示出了在传统的充注站处在执行压力与严密度测试的过程中以及根据现有技术根据SAE J2601标准的实际充注过程的开始时与时间相关的压力曲线。压力脉动在充注之前直接由气体缓冲储箱执行(大约850巴)。对储箱进行充注的储箱供料管线内的压力相应地在经过压力升高(向右的升高的压力)之前表现出明显的峰值P1、P2,所述峰值是源自于用来自气体缓冲储箱的氢对储箱供料管线的加压。
另一方面,在根据本发明的方法为了压力测试的执行而执行时,第二阀8在第一阀5打开之前被打开,以便向储箱4充注气态加压的氢,其中在储箱供料管线3的路径中在节流部9下游后的氢流借助于节流部9被节流,从而储箱供料管线3中的储箱供料压力相对于更加平缓地、即避免明显压力峰值地以受控的方式(尤其单调地)升高。储箱供料压力升高直至其大于储箱4内的储箱压力。储箱阀10因而被打开或被推开,并且开始储箱4与储箱供料管线3之间的压力平衡。储箱压力现在被采用为在储箱供料管线内测量的储箱供料压力(压力测试)。借助于节流部的适当设计,在预定的时间段内发生储箱供料管线内的储箱供料管线升高至储箱压力。大体上,节流部可以被构造成是相应可调的。
如果由此所确定的储箱压力在特定的时间段内(在5秒至25秒的区域内)保持恒定,则可以判断出储箱4严密连接。在成功严密度测试之后,然后经由第一阀5和增压阀1执行实际的充注过程(例如,根据SAE J2601),因而从储箱压力作为开始值开始经历相应的压力升高。由于用气态氢充注储箱,储箱供料管线内的储箱供料压力或者储箱内的储箱压力因而从所述开始值开始基本上线性地升高。
附图标记列表
Claims (9)
1.一种用于在储箱(4)上实现压力测试的方法,其中所述储箱(4)经由储箱阀(10)连接至储箱供料管线(3),所述储箱供料管线具有用于使得所述储箱供料管线(3)截止的第一阀(5),在所述储箱(4)经由所述储箱供料管线(3)被充注之前的压力测试的过程中,气态加压媒介的流、尤其形式为氢的气态加压媒介的流经由桥接所述第一阀(5)的旁通管线(7)在所述第一阀(5)关闭的情况下被输送至所述储箱(4),其中,所述媒介的流在所述旁通管线(7)内被节流,以使得在所述储箱阀(10)上作用的储箱供料压力以受控的方式升高,其中,在所述储箱供料压力超过所述储箱(4)内的储箱压力时,尤其所述储箱阀(10)被打开。
2.根据权利要求1所述的方法,其特征在于,所述媒介的流借助于在所述旁通管线(7)内设置的节流部(9)被节流,以使得在所述储箱阀(10)上作用的储箱供料压力在所述节流部(9)的下游以受控的方式升高。
3.根据权利要求1或2所述的方法,其特征在于,所述旁通管线(7)能够借助于第二阀(8)被截止,所述第二阀尤其在所述旁通管线(7)内设置在所述节流部(9)上游,为了在所述第一阀(5)关闭的情况下执行压力测试,所述第二阀(8)被打开,经由所述旁通管线(7)的媒介的流被输送至所述储箱(4)。
4.根据权利要求3所述的方法,其特征在于,所述旁通管线(7)内的媒介的流被节流,以使得所述储箱供料压力在第二阀(8)打开之后在预限定的时间段内、尤其在10秒内达到所述储箱压力。
5.根据权利要求3或4所述的方法,其特征在于,在所述储箱(4)的储箱阀(10)由于升高的储箱供料压力而被推开时,所述旁通管线(7)借助于所述第二阀(8)被截止。
6.根据前述权利要求任一所述的方法,其特征在于,在充注之前,在所述第一阀(5)的上游尤其为875巴的预限定最大压力出现在所述储箱供料管线(3)中。
7.根据前述权利要求任一所述的方法,其特征在于,所述储箱供料压力被测量,并且所述储箱阀(10)打开之后在所述储箱供料管线(3)内建立的储箱供料压力被确定储箱压力。
8.一种用于向储箱(4)充注气态加压媒介、尤其氢形式的气态加压媒介的充注设备,所述充注设备尤其用于根据前述权利要求任一所述的方法,所述充注设备包括:
储箱供料管线(3),所述储箱供料管线包含用于使得所述储箱供料管线(3)截止的第一阀(5),所述储箱供料管线(3)被设计成在所述第一阀(5)的下游连接至待充注的储箱(4),
其特征在于,
设置旁通管线(7),所述旁通管线桥接所述第一阀(5)并具有第二阀(8)和节流部(9),所述节流部(9)被设计成在所述第一阀(5)关闭且所述第二阀(8)打开的情况下使得经过所述旁通管线(7)的媒介的流节流,从而在所述储箱供料管线(3)中建立的储箱供料压力在所述节流部(9)的下游以受控的方式升高。
9.根据权利要求8所述的充注设备,其特征在于,所述节流部(9)在所述旁通管线(7)中设置在所述第二阀(8)的下游。
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Cited By (3)
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WO2022056999A1 (en) * | 2020-09-21 | 2022-03-24 | China Energy Investment Corporation Limited | Method and apparatus for calculating volume of compressed gas storage vessel, computer, and medium |
CN114763877A (zh) * | 2021-01-11 | 2022-07-19 | 神华氢能科技如皋有限责任公司 | 气体加注方法及控制装置、存储介质、气体加注系统 |
CN114763877B (zh) * | 2021-01-11 | 2024-01-02 | 神华氢能科技如皋有限责任公司 | 气体加注方法及控制装置、存储介质、气体加注系统 |
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EP2893247B1 (de) | 2019-08-21 |
CN104641164B (zh) | 2016-11-16 |
CA2880915C (en) | 2020-07-07 |
KR102087742B1 (ko) | 2020-03-12 |
WO2014037085A1 (de) | 2014-03-13 |
JP6351594B2 (ja) | 2018-07-04 |
DE102012018109A1 (de) | 2014-03-27 |
BR112015004649A2 (pt) | 2017-07-04 |
CA2880915A1 (en) | 2014-03-13 |
JP2015529331A (ja) | 2015-10-05 |
KR20150052185A (ko) | 2015-05-13 |
BR112015004649B1 (pt) | 2021-08-03 |
US9982842B2 (en) | 2018-05-29 |
EP2893247A1 (de) | 2015-07-15 |
US20160010799A1 (en) | 2016-01-14 |
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