CN1876221A - 具有非平板构件的燃料脱氧*** - Google Patents
具有非平板构件的燃料脱氧*** Download PDFInfo
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Abstract
一种用于能量转化设备的燃料***包括多个燃料板、透氧膜、多孔基板和真空框架板,它们限定出波浪图案构造。由于更高的表面容积率、流动紊流的提高和最小化的锐边(与之相比,其他构造否则可能损坏透氧膜),波浪构造通过提高效率和整体性来增强脱氧。
Description
技术领域
本发明涉及通过脱氧稳定燃料,并且更具体而言涉及燃料板燃料稳定单元。
背景技术
燃料通常在飞行器中用作各种飞行器***的冷却剂。在碳氢喷气燃料中溶解的氧气的存在可能是不受欢迎的,因为氧气支持产生不期望副产物的氧化反应。空气在喷气燃料中的溶解导致约70ppm氧气浓度。当掺气的燃料加热到350与850之间时,氧气启动燃料的自由基反应,导致通常称为“积碳”或者“焦碳”的沉积物。积碳可能对燃料管路有害并且可能限制燃烧。这种沉积物的形成可能损害燃料***在期望的换热功能或者燃料的高效喷射发明的正常功能性。
各种传统的燃料脱氧技术当前被用来将燃料脱氧。一般地,将氧气浓度降低至2ppm就足以克服积碳问题。
一种在飞行器中使用的传统燃料稳定单位(FSU)通过在可透氧的膜上产生氧气压力梯度来从喷气燃料中去除氧气。FSU包括夹在透气膜之间的多个燃料板和布置在壳体内的多孔基板。每个燃料板限定出燃料通道的一部分而多孔板支撑的透气膜限定出燃料通道的其余部分。透气膜包括Teflon(聚四氟乙烯)或者其他类型的无定形玻璃状聚合物涂层与燃料通道内的燃料接触,以防止大量液态燃料移动通过透气膜和多孔板。
使用多个类似构造的平板提高了生产效率并减小了整体成本。此外,在增大从燃料去除溶解氧气的能力的同时,FSU的尺寸和重量大为减小。而且,与以前的管状设计相比平的设计容易标度。
不利的是,平的燃料板生产较难和较贵。此外,透气膜较薄(约2-5微米)并且可能缺乏机械完整性。燃料板和透气膜之间的接触可能导致对透气膜的损坏。损坏的透气膜可能允许燃料渗过膜并蓄积在背面,这可能导致对脱氧的阻力。
所以,期望在提高燃料紊流和脱氧、尺寸与重量经济的***中提供碳氢燃料的脱氧。
发明内容
根据本发明的一种用于能量转化设备的燃料***包括具有透氧膜的脱氧器***。吹扫气或真空维持透氧膜两侧上的氧气浓度差以脱氧燃料。脱氧器***包括括多个燃料板、透氧膜、多孔基板和真空框架板,它们限定出波浪图案构造。由于更高的表面容积率、流动紊流的提高和最小化的锐边(与其他构造相比,其否则可能损坏透氧膜),波浪构造通过提高效率和整体性来增强脱氧。
所以本发明在提高燃料紊流和脱氧、尺寸与重量经济的***中提供碳氢燃料的脱氧。
附图说明
从当前优选实施例的以下详细描述,本发明的各种特征和优点将对本领域技术人员变得清楚。此详细描述的附图可以概要描述如下:
图1是能量转化设备(ECD)和采用根据本发明的燃料脱氧器的相关燃料***的总体示意框图;
图2是脱氧器***的框图;
图3是在本发明的脱氧器***的燃料通道和吹扫气通道之间的自立式透氧多孔膜的放大视图;和
图4是沿着脱氧器的长度方向上压力分布图的图形表示,描绘了在燃料入口区域处膜上的最大压力梯度;
图5示意性地示出了在进口和出口之间透氧膜的形状。
具体实施方式
图1图示了用于能量转化***(ECD)12的燃料***10的总体示意图。脱氧器***14从诸如燃料箱的储存器16接收液态燃料F。ECD 12可以以各种形式存在,其中燃料在最终用于处理、用于燃烧或者用于某种形式能量释放之前的某个点处,获取足够的热而支持自动氧化反应和积碳,如果溶解氧气的存在在燃料中达到任何严重的程度。
ECD 12的一种形式是燃气轮机发动机,并且具体地是高性能飞行器中的这种发动机。一般地,燃料还用作飞行器中一个或多个子***的冷却剂,并且当其就在燃烧之前被传送到燃料喷射器时变热。
换热部分18表示燃料以换热关系通过其***。应当理解到,换热部分18可以直接与ECD 12相关联和/或在更大的***10中分布在其他位置。换热部分18可以替代地或者额外地包括分布在整个***中的多处换热装置。
按照一般理解,存储在储存器16中的燃料F通常包含溶解氧气,可能为70ppm的饱和水平。燃料泵20从储存器16抽吸燃料F。燃料泵20经由燃料存储器回路22和通向脱氧***14的燃料入口26的阀24与储存器16连通。由燃料泵20施加的压力帮助燃料F流通经过脱氧***14和燃料***10的其他部分。当燃料F经过脱氧***14时,氧气被选择性地去除到吹扫气***28中。
脱氧后的燃料F从脱氧***14的燃料出口30经由脱氧后燃料回路32流动到换热***18和ECD 12,如燃气轮发动机的燃料喷射器。脱氧后的燃料的一部分可以如再流通回路33所示地再流通到脱氧***14和/或储存器16。应当理解到,虽然在图示实施例中公开了特定的部件布置,但其他布置也将从本发明受益。
参照图2,脱氧***14优选地包括多个气体/燃料微通道组件34。组件34包括燃料通道38和诸如吹扫气通道40的氧气接收通道之间的透氧膜36。吹扫气通道40优选地包含氮气和/或其他惰性气体。应当理解到,该通道可以为各种形状和布置以提供压差,该压差维持膜两侧上的氧气浓度差以使燃料脱氧。燃料和吹扫气优选地在相反方向上流动。
透氧膜36优选地包括允许溶解氧气(和其他气体)扩散通过埃量级的孔但排斥较大的燃料分子的多孔膜,和使用溶解-扩散机制来溶解氧气(和其他气体)并在排斥燃料的同时允许它(或它们)扩散通过该膜的透气膜。聚四氟乙烯类化合物(PTFE)系列,通常标识在注册给特拉华州的E.I.DuPont de Nemours of Wilmington的商标“Telfon”下,已经证明提供了燃料脱氧的有效结果。PTFE材料被认为使用溶解-扩散机制,但根据配方与结构也可以经由其多孔性操作。多孔膜材料的又一个示例是一薄层50埃多孔氧化铝陶瓷或沸石。透气膜的又一个示例是一薄层硅树脂橡胶。
在操作中,流过燃料通道38的燃料与透氧膜36接触。真空建立燃料通道38的内壁和透氧膜36之间的氧气分压差,其使得溶解在燃料内的氧气扩散,以移动通过支撑透氧膜36的多孔基板42并且通过与燃料通道38分离的吹扫气通道40移动出脱氧***14。在完全填充燃料流的微通道中,当在膜壁上排出起泡后可燃挥发物的浓度最小化并且氧气通过透氧膜36(通过透氧膜36两侧上的压差)除去。为了进一步理解基于膜的燃料脱氧器***的其他方面和其相关部件,请参考标题为“PLANAR MEMBRANE DEOXYGENATOR”的美国专利No.6,315,815和美国专利申请序列号No.10/407,004,它们转让给本发明的受让人并由此整体包括于此。
参照图3,形成脱氧器***14的微通道组件34的一组板包括与多孔基板42所支撑的透氧膜36相邻而被夹持的多个燃料板44。应当理解到,多孔基板可以采用各种形式,虽然图示为蜂房模式。多孔基板42支撑在基板框架板46内。透氧膜36由多孔基板42支撑以形成燃料通道38的一部分(图2)。在透氧膜36和燃料板44的每侧上是垫圈48。垫圈48防止燃料从燃料板44限定的预定燃料通道泄漏。不论微通道组件34的数量如何,脱氧***14将由外壳体板50a、50b密封,它们分别包括入口26和真空端口29、以及出口30。虽然在图示实施例中图示为直线型,但本领域技术人员将认识到替代的形状、大小或构造都是适用的并且在本发明范围内。
脱氧器***14包括燃料入口26、燃料出口30和真空端口29。真空端口29与真空源连通。燃料从燃料泵20流动到入口26、通过出口30流动到ECD 12(图1)。
吹扫气通道40由多个燃料板44形成。每个燃料板44和相关联的透氧膜36限定出入口26和出口28之间的燃料通道38的一部分。真空端口29通过基板框架板46和多孔基板42与真空端口29f连通。真空在每个多孔板42内建立分压梯度以通过透氧膜36从燃料通道38吸取溶解氧气。氧气通过真空端口29排出。垫圈48防止燃料在燃料板之间泄漏并且提供真空密封使得通过多孔基板42抽真空。
燃料板44、透氧膜36和多孔基板框架板46的比质量由依应用而定的要求来确定,例如燃料类型、燃料温度和发动机的质量流量需求。此外,包含不同量溶解氧气的不同燃料可能要求不同的脱氧量来除去期望的溶解氧气量。
燃料板44限定入口26和出口28之间的吹扫气通道40(图4)。每个燃料板44仅限定每个燃料通道38的两侧并且透氧膜36限定每个燃料通道38的其余侧。燃料通道38的构造优选地被限定为确保燃料与透氧膜36最大接触。每个燃料板44包括入口26f和出口30f(图4)。燃料通道38被形成为将燃料最大暴露到透氧膜36。这可以通过为燃料提供混合和/或优化流动模式来完成。燃料通道38被形成为最大化燃料与透氧膜接触的区域量,以最大化从燃料除去溶解氧气的量。燃料通道38优选地足够小使得燃料与透氧膜36接触并且还必须足够大以不限制燃料流。
优选地,燃料板44、透氧膜36、多孔基板42、基板框架板46和垫圈48是非平面的,并且最优选地限定出波浪图案。应当理解到其他非平面形状也可与本发明一起使用。由于更高的表面容积率、流动紊流的提高和最小化的锐边(与锐边构造相比,否则可能损坏透氧膜36),波浪构造通过提高效率和整体性来增强脱氧。应当理解到,透氧膜36和垫圈48为相对弹性的柔性构件,其不一定最初就是波浪形状而可以在夹在板44、46、50a、50b之间时适形这些板来提供非平面形状。
板50a、50b、44、46、透氧膜36和垫圈48相对于入口26和出口30之间的燃料流限定的平面P(图5中示意性示出)优选地为非平面的。就是说,燃料通道38在入口26和出口30之间蜿蜒(图4)并且在它们之间也是非平面的(图5)。脱氧器***14的非平面构造增强了燃料流和透氧膜36之间的接触以提高溶解氧气的质量传送。对于同样尺寸的脱氧器***14而言,提高的质量传送能力允许脱氧器***14尺寸减小而不会引起性能的相应减小或者性能的相应增大。
虽然示出、描述并要求保护特定步骤顺序,但应当理解到这些步骤可以以任何顺序、分开或者组合起来执行除非另外指明,并且仍将从本发明受益。
上述描述是示例性的而非由其中的限制所限定。考虑到上述教导本发明的许多修改和变化都是可能的。已经公开了本发明的优选实施例,但是本领域技术人员将认识到在本发明的范围内可以有某种修改。所以,应当理解到在所附权利要求的范围内,本发明可以不同于具体模式地实施。由于该原因,所附权利要求应当被研究来确定本发明的真实范围和内容。
Claims (11)
1.一种燃料***,包括:
燃料通道;
氧气接收通道;和
与所述燃料通道和所述氧气接收通道相连通的透氧膜,所述透氧膜具有非平面表面。
2.根据权利要求1所述的燃料***,其中所述透氧膜限定出波浪图案。
3.根据权利要求1所述的燃料***,还包括非平面基板,其支撑所述透氧膜使得所述透氧膜限定出波浪图案。
4.一种燃料***,包括:
非平面燃料板;
非平面基板;和
透氧膜,所述透氧膜与所述非平面基板相邻地安装以在所述透氧膜的一侧上限定出燃料通道而在所述透氧膜的相反侧上限定出氧气接收通道。
5.根据权利要求4所述的燃料***,其中所述非平面燃料板限定出波浪图案。
6.根据权利要求4所述的燃料***,其中所述非平面基板限定出波浪图案。
7.根据权利要求4所述的燃料***,其中所述氧气接收通道通入惰性气体。
8.根据权利要求4所述的燃料***,其中所述氧气接收通道在其中限定出真空度。
9.根据权利要求4所述的燃料***,其中所述非平面基板支撑所述透氧膜使得所述透氧膜限定出波浪图案。
10.一种使燃料***内溶解氧气最小化的方法,包括以下步骤:
(1)将限定出非平面表面的透氧膜定位为与包含溶解氧气的液体燃料流相邻;和
(2)使与所述透氧膜相邻的吹扫气流动以通过透氧膜抽吸氧气。
11.根据权利要求10所述的方法,其中所述步骤(1)还包括以下步骤:
支撑所述透氧膜。
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US11/148,508 US7465336B2 (en) | 2005-06-09 | 2005-06-09 | Fuel deoxygenation system with non-planar plate members |
US11/148508 | 2005-06-09 |
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EP (1) | EP1731209B1 (zh) |
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-
2006
- 2006-05-25 KR KR1020060046822A patent/KR20060128646A/ko active IP Right Grant
- 2006-06-07 EP EP06252944.1A patent/EP1731209B1/en active Active
- 2006-06-08 JP JP2006159413A patent/JP2006343093A/ja active Pending
- 2006-06-08 CN CNA2006100945124A patent/CN1876221A/zh active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108525522A (zh) * | 2018-06-20 | 2018-09-14 | 邢传宏 | 一种平膜元件用支撑元件及平膜元件 |
CN108525522B (zh) * | 2018-06-20 | 2023-11-10 | 邢传宏 | 一种平膜元件用支撑元件及平膜元件 |
CN117504026A (zh) * | 2023-12-25 | 2024-02-06 | 天津大学 | 用于体外膜肺氧合的氧合器组件 |
CN117504026B (zh) * | 2023-12-25 | 2024-05-07 | 天津大学 | 用于体外膜肺氧合的氧合器组件 |
Also Published As
Publication number | Publication date |
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EP1731209B1 (en) | 2013-12-18 |
JP2006343093A (ja) | 2006-12-21 |
KR20060128646A (ko) | 2006-12-14 |
US20060278073A1 (en) | 2006-12-14 |
EP1731209A2 (en) | 2006-12-13 |
US7465336B2 (en) | 2008-12-16 |
EP1731209A3 (en) | 2009-11-04 |
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