CN105264281B - 用于补充低温液体尤其是液态天然气供应的方法和装置 - Google Patents
用于补充低温液体尤其是液态天然气供应的方法和装置 Download PDFInfo
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- CN105264281B CN105264281B CN201480032187.1A CN201480032187A CN105264281B CN 105264281 B CN105264281 B CN 105264281B CN 201480032187 A CN201480032187 A CN 201480032187A CN 105264281 B CN105264281 B CN 105264281B
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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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
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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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
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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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
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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
- 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
- F17C2205/0326—Valves electrically actuated
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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
- 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
- F17C2205/0338—Pressure regulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
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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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/011—Oxygen
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2221/00—Handled fluid, in particular type of fluid
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- F17C2221/016—Noble gases (Ar, Kr, Xe)
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
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- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/031—Air
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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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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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
- 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
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F17C2225/0169—Liquefied gas, e.g. LPG, GPL subcooled
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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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- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
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- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
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Abstract
本文公开一种用于从储箱(2)补充低温液体供应的方法,所述方法包括以下步骤:‑在第一压力下用低温气体对容器(14)加压,所述容器使得被称为冷管路的第一低温流体流动管路和被称为热管路的第二低温流体流动管路穿过其中;‑使低温液体在第二压力下穿过所述冷管路(12);以及‑至少部分从自所述储箱(2)泵抽并蒸发的低温液体来为所述容器(14)供应低温气体。所述根据本发明的装置为用于实现与上述方法类似的方法的装置。
Description
技术领域
本发明涉及补充低温液体尤其是液态天然气的方法,以及用于实现这种方法的装置。
背景技术
某些车辆,例如通常是卡车还有船只,使用液化天然气作为燃料。有必要为这些车辆提供补充站以“装满油”,如同传统上以汽油或柴油运行的车辆那样。
然而,用液化天然气(或LNG)补充储箱存在多种限制,汽油加油站则不存在这些限制。使用LNG的(所有)车辆都需要受到压力的储箱。因此,不能在环境压力下进行补充。此外,LNG并非处于环境压力下并且需要在低温下分配。
参考文献WO-2011/152965的前序部分,以介绍关于车辆的LNG补充的现有技术(§[0003]至§[0007])。
本文将该文献WO-2011/152965视为本发明的最接近的现有技术。该文献提出用于分配LNG的方法和设备,该方法和设备使得有可能在指定的温度和压力条件下从储箱供应气体。该方法要求进行以下步骤:在第一压力下对具有LNG的容器(本文献中被称为包装容器)加压;随后使得LNG在高于第一压力的第二压力下到达冷凝器,该冷凝器与该容器处于热传递的关系;并且最后从冷凝器中提取LNG。
本文献中所述的方法和装置使得有可能在预定压力和温度下以令人满意的方式供应LNG。
本发明建议解决的问题源自以下这一事实:对于补充LNG来说,所有车辆都不需要相同的压力和相同的温度。利用文献WO-2011/152965中所描述的装置,有可能改变补充压力(和温度),但为了从一个压力(及其相关温度)切换至另一个压力,所需时间可能相对较长,大约一个小时或更长。因此,有必要例如对某一天在一个补充压力下补充车辆,并且在第二天在另一个压力下补充车辆制定时间表。
本领域技术人员将明白,这样的补充条件缺乏灵活性,因为应当有可能快速补充车辆,并且优选的是,希望在车辆到达补充站时补充车辆。
因此,本发明的目的在于提供一种方法(和至少一个相应装置),该方法使得有可能在给定的温度和压力条件下输送LNG(或更一般来讲,低温液体)并且在补充需要在不同压力下补充其储箱的车辆之后,快速改变这些条件以补充需要在第二压力下装满油的车辆而无需等待很长时间。
根据本发明的方法优选在能量方面是经济的。
发明内容
为此,本发明提出从储箱补充低温液体的方法,该方法包括以下步骤:
-在第一压力下用低温气体对容器加压,所述容器由第一低温流体循环管路(被称为冷管路)和第二低温流体循环管路(被称为热管路)横贯,以及
-使低温液体在第二压力下穿过冷管路,以及
-从冷管路向下游供应低温液体。
根据本发明,可以原始方式设置成,至少部分从泵抽到储箱中并蒸发的低温液体来为容器供应低温气体。
虽然在从现有技术已知的装置中,用于馈送热管路并对容器加压的低温气体来自储箱的含有呈气体状态的流体的那部分(储箱的上部),但在这里所提出的是,从储箱抽出低温液体、使其变成气体状态并且使用如此获得的低温气体对容器加压。因此,有可能使储箱内部的压力与在补充装置的出口处输送低温液体的温度完全不相关联。容器加压是例如借助于泵和蒸发器实现的,可将这些元件串联布置在储存贮器与容器之间。
当实现根据本发明的方法时,将所需压力和所需温度下的低温液体输送至横贯容器的冷管路的出口。本发明使得与现有技术的方法相比,有可能在容器中具有更多的升高压力。因此,可使用更大范围的压力并且用于输送低温液体的温度范围也更大。
为实现对低温液体的出口温度的控制,根据本发明的补充方法有利地包括以下这一阶段:在低温液体蒸发之后以及在低温液体引入到容器中之前所进行的压力调节。
为使单个泵足够实现该方法,有利的是,将低温液体泵抽到储箱外部,并且一方面使用如此泵抽的液体来馈送冷管路,另一方面在使液体到达容器之前,将液体蒸发。
为了对容器加压,另外有利的是,使容器内冷凝的低温液体在引入到容器中之前再蒸发。随后馈送加压容器的低温气体存在两个来源并且这使得有可能限制低温液体的抽出以进行加压。可使容器内部的冷凝的低温液体例如在再引入该容器中之前在包含蒸发器的回路中再蒸发。
本发明特别适于低温液体为液化天然气和或低温液体为呈气体状态的天然气的情况。然而,其他低温液体(氮气、空气、氩气、氢气等)也优选与本发明完全兼容。
本发明还涉及用于补充低温液体的装置,该装置包括储箱;加压容器,该加压容器由被称为冷管路的第一管路横贯,其中入口通过来自储箱的低温液体馈送并且低温液体出口针对待填充的储箱,容器此外还通过用于在压力下馈送低温气体的装置来馈送,用于对容器加压,并且包括排空冷凝液体。
根据本发明,在这种补充装置中,在压力下用低温气体馈送容器的装置包括来自储箱的低温液体的馈送装置以及蒸发装置。
在这种补充装置中,可将泵和蒸发器串联布置例如在储存贮器与容器之间以对容器加压。
为了实现对出口温度的调节,所提出的是,在蒸发装置与加压容器之间具有压力调节装置。
为了节约低温流体,装置有利地包括具有热交换器的回路,该回路包括从加压容器开始的用于热交换器的馈送管路,这使得有可能在重力作用下从加压容器内抽出呈液体形式的冷凝低温气体;以及使热交换器的出口连接至加压容器的返回管路,这使得有可能将热管路中的低温气体再引入至加压容器。如此形成的回路使得能够“回收”加压容器中冷凝成液体形式的低温气体并且因此能够节约来自储箱的低温液体。还有可能通过将回路经由具有阀的管路连接至储箱来在加压容器区域中实现压力调节。可将该管路连接至位于热交换器上游或下游的回路。
根据本发明的补充装置的一个优选实施方案要求该装置具有泵,该泵被设计成从储箱抽出低温液体并且使得如此抽出的低温液体的压力达到大于储箱中的液体的压力的压力。为了仅仅具有单个泵,在泵的下游,第三管路馈送冷管路并且从第三管路分支的第四管路馈送位于容器上游的蒸发装置。
有利地,根据本发明的补充装置此外还包括能够从储箱直接输送低温液体的低温液体输送管路。
附图简述
根据以下参照附加示意图进行的描述,本发明的细节和优点将更加明显,附图中:
单个附图是图示了根据本发明的补充装置的优选实施方案的示意图。
具体实施方式
该附图图示了液化天然气或LNG的补充站。当然,也可使用相同的或稍微调整的站来分配其他低温流体,诸如氮气、氧气、空气、氩气、乙烯、氢气或这些流体中某些的混合物。
更具体来说,所示补充站意欲补充每种类型的车辆(陆地车辆(尤其是卡车)和船只又或者是飞机)的储箱。这样一种补充站的目的是在特定于每个车辆的压力和温度的条件下从单个储箱2向车辆提供液化天然气。
储箱2含有液化天然气以及位于呈液体状态的天然气顶部的呈气体状态的天然气。储箱2中普遍存在的压力在下文被称为P1。控制和维持储箱2内部的压力的装置是本领域技术人员所熟知的并且这里不再描述。在储箱2中容许在通过以上提及的控制和维持装置所调节的范围内发生压力变化。通常,压力P1介于2巴与10巴之间(或介于2.105Pa与106Pa之间),例如约为6巴(6.105Pa)。
提供低温泵4以从储箱通过管路6抽出LNG。泵4使得有可能使储箱的液体达到大于压力P1的压力P2。泵4是这样的以使得可根据以下进一步阐述的要求来调整压力P2。
将由泵4泵抽的LNG送至管路8,该管路随后分成如下所述三个分支。
第一分支10使LNG从泵4的出口到达第一管路(被称为冷管路12),该第一管路随后横贯加压容器14。此外,该容器14还被第二管路(称为被热管路)横贯。在图1中,在容器14区域中,冷管路12水平延伸,而热管路垂直延伸。实际上,该热管路在压力下从加压容器14馈送气体,该加压容器充当冷管路12的包层或“外皮”。能够在下游从容器排空冷凝液体。在一个优选实施方案中,冷管路12和容器14二者均形成一个相同的组件。该单元在被设计成在冷管路中循环的流体(液体)与被设计成在热管路中循环的流体(气态,位于上游)之间形成热交换器。在本申请中,该单元使得有可能调节在冷管路中循环的液体的温度并且形成其中由热管路所馈送的气体的一部分冷凝的冷凝器。阀V1使得有可能调节第一分支10中LNG的流率。在冷管路12的出口处,由管路(被称为主管路16)获得液化天然气,以便在车辆(未示出)所需的温度和压力的条件下用燃料(LNG)馈送该车辆。
第二分支18(在其内部,由放置在该分支上游的阀V2调节流率)使由泵4所泵抽的液化天然气到达第一蒸发器20。与阀V3相关的调节器22使得有可能调节位于第一蒸发器的出口处的呈气体状态的天然气的压力以馈送容器14。可以假设,调节器22区域中的调节压力主要是容器14中普遍存在的压力。该压力在下文被称为P3。
提供第三分支24,以在其中在储箱2中发现液化天然气的条件下直接输送液化天然气。该分支仅包括一个阀V4,该阀使得能够调节其流率。还可使得由第三分支24所输送的液体通过泵4达到压力P2(大于储箱2中的LNG的压力P1)。在后一种情况下,将LNG在温度T2下在压力P2下在过冷时输送,温度T2低于压力P2下天然气的饱和温度。
应当注意到,在单个附图中还存在包含第二蒸发器28的回路26。该回路26的目的是抽出容器14中已冷凝的天然气并且使得已冷凝的天然气到达第二蒸发器28,在该第二蒸发器中,已冷凝的天然气恢复气体状态以再次馈送容器14。第二蒸发器28,与第一蒸发器20一样,可为与周围空气换热的蒸发器,或者电蒸发器或蒸汽蒸发器(或能够蒸发液体的任何其他装置)。
有利的是,提供调节电路,该调节电路包括管路30,该管路使位于第二蒸发器28下游的回路26连接至储箱2;以及调节阀V5。其功能在以下进一步阐述。具体来说,这使得有可能在某些条件下快速调整容器14和对应电路中的压力。
其他控制和管理元件被提供用于上述站但不在单个附图中描述或图示。这些元件是本领域技术人员已知的并且并不直接对本发明产生影响。
上述补充站的功能如下所述用于利用液化天然气补充车辆。
可以假设,希望在给定压力P2和给定温度T下对车辆补给燃料。该温度T对应于压力P3下天然气的饱和温度。
低温泵4用于使储箱中所存在的LNG从压力P1达到所需压力P2(充电损失除外)。
由第一分支10通过冷管路12运送所泵抽并且达到压力P2的液体的大部分。该液体随后横贯其中液体压力基本上保持不变的容器14,但在该容器中,液体的温度发生变化并且在压力P2和温度T下浮现出来并且馈送主管路16到达正在补给燃料的车辆。
抽出这样泵抽的液体的一部分以馈送第一蒸发器20。LNG的这种蒸发用于对容器14加压。调节器22用于在电路的热管路中、在容器14中以及在回路26中获得压力P3。
由冷管路和容器14形成的单元例如以板式热交换器的形式存在,从而使得有可能在冷管路12中呈液体状态的天然气与在压力P3和对应饱和温度下呈气体状态的天然气之间进行热交换。因此,从冷管路12中排出的呈液体状态的LNG基本上处于呈气体状态的天然气的温度下,也就是说,压力P3下天然气的饱和温度,这对应于主管路16的出口处的所需输送温度。
在进入冷管路12的呈液体状态的LNG与容器中的呈气体状态的天然气之间的热交换期间,使气体变化为气体状态。随后优选在重力作用下抽出该液体,使其在第二蒸发器28中蒸发,并且恢复气体状态,以便再一次以这种气体状态引入容器14中。调节回路26中的压力(借助于调节器22),以使得气体基本上处于压力P3下。该调节使得有可能根据通过容器14中的冷凝所形成的液体量来控制来自第一蒸发器20的气体输入,以实现电路均衡并且保证主管路16中的液化天然气的输出温度。
当回路26中的压力太高时,或当有必要降低压力P3以改变主管路16中的LNG输送温度时,可借助于阀V5来调节压降。包含阀V5的管路30优选通往储箱2的含有呈液体状态的天然气的那部分。因此,离开回路26的气体以储箱液体的形式冷凝并且限制储箱中压力的升高。在第二蒸发器28的下游完成这里的压力调节,但还可以想到,在所示配置中,在该蒸发器的上游完成压力调节。
在相同的压力和温度条件下补充一个或多个车辆后,当车辆到达补充站并且在不同的温度和压力条件下装满时,一方面应当调整LNG输送压力,另一方面应当调节输送温度。
为了改变温度,如下所述根据前面的描述,应当改变容器14中的压力,并且因此还应当改变容器14中的冷凝温度。因此,应当在调节器22级以及可能阀V5级发挥作用。
在前面的描述中应当指出,主管路16(也就是说用于LNG输送的管路)的压力(和温度)独立于储箱2中的压力。因此,可使得LNG在储箱2中保持尽可能冷。
该方法(和对应装置)使得有可能限制储箱2中的热量输出。因此,还应当通过对应的阀限制储箱中所存在的LNG的蒸发以及因此呈气体状态的气体的清除,使得有可能避免在储箱中出现过度压力(而且引起天然气损失)。
因此,用于补充的方法和装置使得有可能快速改变LNG的输送条件。并没有必要作用于储箱中所存在的气相压力以修改主管路的出口处的输送条件。
上文已描述了用于补充车辆的补充方法,这些车辆可为各种车辆。该补充方法也可以被实施来从大型储箱馈送另一个储箱。
根据本发明的方法使得有可能在其中低温液体被抽出的储箱中或在当气体加压是必要时接纳了低温液体的储箱中维持某个压力。
当然,本发明并不限于以上仅描述为说明性且非限制性实施例的补充方法和对应装置。本发明还涉及所提及的所有变体实施方案和在随附权利要求书的框架内在本领域技术人员能及的范围内的其他变体。
Claims (14)
1.一种从储箱(2)补充低温液体的方法,所述方法包括以下步骤:
- 在第一压力下用低温气体对容器(14)加压,所述容器由被称为冷管路的第一低温流体循环管路横贯,所述第一低温流体循环管路来自配有加压气体的所述储箱并且排空了冷凝液体,
- 使低温液体在第二压力下穿过所述冷管路,
- 从所述冷管路向下游供应低温液体,
其特征在于至少部分从自所述储箱(2)泵抽并蒸发的低温液体来为所述容器(14)供应低温气体。
2.根据权利要求1所述的方法,其特征在于所述容器(14)借助于泵(4)和第一蒸发器(20)来加压。
3.根据权利要求1或2中任一项所述的方法,其特征在于所述补充方法包括以下这一阶段:在所述低温液体的蒸发之后以及在所述低温液体引入所述容器(14)中之前进行的压力调节。
4.根据权利要求1或2中任一项所述的方法,其特征在于低温液体被泵抽到所述储箱(2)外部,并且所泵抽的所述液体一方面用于馈送所述冷管路(12),而另一方面在传递至所述容器(14)之前蒸发。
5.根据权利要求1或2中任一项所述的方法,其特征在于在所述容器(14)内所冷凝的低温液体在被引入到所述容器(14)中之前再蒸发。
6.根据权利要求5所述的方法,其特征在于在所述容器(14)内所冷凝的所述低温液体在被再引入到所述容器(14)中之前在包括第二蒸发器(28)的回路(26)中再蒸发。
7.根据权利要求1或2中任一项所述的方法,其特征在于低温液体为液化天然气,并且在于所述低温气体为呈气体状态的天然气。
8.一种用于补充低温液体的装置,所述装置包括储箱(2);加压容器(14),所述加压容器由被称为冷管路(12)的第一管路横贯,其中入口通过来自所述储箱(2)的低温液体馈送并且低温液体出口针对待填充的储箱,所述容器(14)此外还通过用于在压力下馈送低温气体的装置来馈送,以对所述容器(14)加压,并且排空冷凝液体,
其特征在于所述在压力下用低温气体馈送所述容器的装置包括馈送来自所述储箱(2)的低温液体以及第一蒸发器(20)。
9.根据权利要求8所述的装置,其特征在于所述补充装置此外还包括串联布置在所述储箱(2)与所述容器(14)之间的泵(4)和第一蒸发器(20),以对所述容器加压。
10.根据权利要求8或9中任一项所述的装置,其特征在于所述补充装置还具有压力调节装置(22,V3),所述压力调节装置介于所述第一蒸发器(20)与所述加压容器(14)之间。
11.根据权利要求8或9中任一项所述的装置,其特征在于所述补充装置包括具有第二蒸发器(28)的回路(26),所述回路(26)包括从所述容器(14)开始的用于所述第二蒸发器(28)的馈送管路,这使得有可能在重力作用下从所述容器内抽出呈液体形式的冷凝低温气体;以及使所述第二蒸发器(28)的所述出口连接至所述容器(14)的返回管路,这使得有可能将热管路中的低温气体再引入至所述加压容器(14)。
12.根据权利要求11所述的装置,其特征在于所述回路(26)通过包括阀(V5)的管路连接至所述储箱(2)。
13.根据权利要求8或9中任一项所述的装置,其特征在于所述补充装置具有泵(4),所述泵被设计成从所述储箱(2)抽出低温液体并且使得这样抽出的所述低温液体达到大于所述储箱(2)中所述液体的所述压力的压力。
14.根据权利要求13所述的装置,其特征在于在所述泵(4)的下游,第三管路(10)馈送所述冷管路(12),并且从所述第三管路分支出来的第四管路(18)馈送位于所述容器(14)上游的所述第一蒸发器(20)。
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PCT/FR2014/051010 WO2014177796A2 (fr) | 2013-04-30 | 2014-04-25 | Procédé et dispositif de ravitaillement en liquide cryogénique, notamment en gaz naturel liquéfié |
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CN106764428B (zh) * | 2016-12-20 | 2018-08-28 | 上海华林工业气体有限公司 | 一种co输送管线上co补偿供给系统及其应用 |
JP6858866B2 (ja) * | 2017-02-06 | 2021-04-14 | ワルトシラ フィンランド オサケユキチュア | 船舶内の燃料タンク構成 |
CN107120524B (zh) * | 2017-06-08 | 2019-07-19 | 中国船舶科学研究中心(中国船舶重工集团公司第七0二研究所) | 氩气常压置换系统 |
DE102017008210B4 (de) * | 2017-08-31 | 2020-01-16 | Messer France S.A.S. | Vorrichtung und Verfahren zum Befüllen eines mobilen Kältemitteltanks mit einem kryogenen Kältemittel |
CN107764121B (zh) * | 2017-11-07 | 2023-09-29 | 中国五环工程有限公司 | 低温液化烃储运站的节能降耗系统及调节方法 |
CN108333863B (zh) * | 2018-01-26 | 2019-08-06 | 陕西师范大学 | 一种粘结的电影胶片的揭取装置及揭取方法 |
FR3078137B1 (fr) * | 2018-02-19 | 2021-01-08 | Air Liquide | Dispositif et procede de fourniture de liquide cryogenique |
FR3088701B1 (fr) * | 2018-11-15 | 2020-10-23 | Air Liquide | Installation et procede de remplissage de reservoirs de gaz sous pression |
CN109681777A (zh) * | 2019-01-08 | 2019-04-26 | 武希盛 | 一种低温液化气体无动力泵 |
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BR112015027612A2 (pt) | 2017-09-19 |
WO2014177796A2 (fr) | 2014-11-06 |
FR3005135A1 (fr) | 2014-10-31 |
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US20160084441A1 (en) | 2016-03-24 |
AU2014261287B2 (en) | 2018-08-30 |
EP2992266B1 (fr) | 2021-06-02 |
AU2014261287A1 (en) | 2015-12-03 |
PT2992266T (pt) | 2021-07-21 |
US10704735B2 (en) | 2020-07-07 |
CA2910293A1 (fr) | 2014-11-06 |
EP2992266A2 (fr) | 2016-03-09 |
WO2014177796A3 (fr) | 2015-03-26 |
CA2910293C (fr) | 2021-10-19 |
FR3005135B1 (fr) | 2019-03-29 |
PL2992266T3 (pl) | 2021-12-06 |
CN105264281A (zh) | 2016-01-20 |
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