CN104121038B - 空气循环机、其喷嘴和护罩组合及其维修方法 - Google Patents

空气循环机、其喷嘴和护罩组合及其维修方法 Download PDF

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CN104121038B
CN104121038B CN201410167273.5A CN201410167273A CN104121038B CN 104121038 B CN104121038 B CN 104121038B CN 201410167273 A CN201410167273 A CN 201410167273A CN 104121038 B CN104121038 B CN 104121038B
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shield
plate
nozzle
blades
cycle machine
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CN104121038A (zh
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C.M.比尔斯
C.麦克奥利夫
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Hamilton Sundstrand Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/045—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector for radial flow machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/048—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector for radial admission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/80—Repairing, retrofitting or upgrading methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/90—Coating; Surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes
    • F05D2240/128—Nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/95—Preventing corrosion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Architecture (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种用于空气循环机中的喷嘴和护罩，其具有板和护罩，所述护罩相对于所述板在第一轴向方向上绕着所述护罩的中心轴弯曲。多个叶片在第二轴向方向上背离所述板延伸。所述多个叶片背离所述板延伸一个高度和界定为两个相邻叶片之间的最近距离的宽度，所述高度与所述宽度的比介于1.7377与2.1612之间。还公开了一种空气循环机及维修方法。

Description

空气循环机、其喷嘴和护罩组合及其维修方法
技术领域
本申请涉及一种用于空气循环机中的喷嘴和护罩。
已知空气循环机且其通常包括一个或多个涡轮，所述涡轮接收压缩空气源且被驱动来旋转。接着，涡轮旋转压缩机转子。空气由空气循环机调节且被移动用于飞机机舱空气调节和温度控制系统。
涡轮通常具有喷嘴和护罩，其控制涡轮转子上游和下游的空气流量。
发明概要
一种用于空气循环机中的喷嘴和护罩具有板和护罩，所述护罩相对于板在第一轴向方向上绕着护罩的中心轴弯曲。多个叶片在第二轴向方向上背离板延伸。多个叶片背离板延伸一个高度和界定为两个相邻叶片之间的最近距离的宽度，所述高度与所述宽度的比介于1.7377与2.1612之间。还公开了一种空气循环机及维修方法。
从下文附图和详述可最好地理解这些和其它特征。
附图简述
图1示出空气循环机。
图2A是贯穿第一级涡轮的涡轮喷嘴和护罩的截面图。
图2B是涡轮喷嘴部分的图。
图2C示出叶片的细节。
图2D是沿着图2C的线D-D截取的剖面线。
具体实施方式
图1中图示了空气循环机20，其具有由轴24驱动的风扇22。如已知，压缩机35在入口126处从压缩空气源接收压缩空气且进一步压缩空气。空气向下游流入第一涡轮入口26中，其驱动第一级涡轮转子28。接着空气流过第二级涡轮转子32且穿过出口34。空气可用于飞机机舱且作为机舱空气调节和温度控制系统的部分。
涡轮喷嘴36与第二级涡轮转子相关联且用来将气流从入口导引到涡轮转子32。
第一级护罩和喷嘴127包括在转子28下游的护罩128和在转子28上游的喷嘴130。
图2A示出喷嘴和护罩127的细节。如图所示，护罩部分128背离板121沿着中心轴A向前弯曲。板121携载多个叶片132，其还可见于图2B。在一个实施方案中，存在19个绕着喷嘴和护罩127的中心轴C周向间隔的叶片。
如图2C中所示，截面图D-D是在两个相邻叶片132之间截取。如图2D中所示，叶片132背离板121延伸的高度或距离界定为d1。距离d2可被界定为通道宽度且是两个相邻叶片132之间的最近距离，其是与叶片122的翼面的侧边相切或平行所测。
在一个实施方案中，高度d1是.560英寸（1.42厘米）且宽度d2是.289英寸（.734厘米）。这造成全部19个叶片之间的总流量面积是3.075平方英寸（平方厘米7.8105）。
在实施方案中，高度d1与宽度d2的比介于1.7377与2.1612之间。在实施方案中，总喷嘴流量面积介于2.7491平方英寸与3.4191平方英寸之间。
喷嘴和护罩127具有碳化钨防腐涂层。喷嘴和护罩127由铝基体形成且接着具有碳化钨防腐涂层。优选地，利用连续燃烧来提供高速氧燃料涂层技术。
一种维修空气循环机20的方法包括以下步骤：从第一级涡轮转子28邻近处的位置移除喷嘴和护罩组合127。接着更换的喷嘴和护罩组合127安装在转子28邻近处。
题目是Turbine Nozzle for Air Cycle Machine且与本文同一日期提交的共同未决申请案序列号13/869048、代理案号第PA25461US号；第67010-487US1号中公开和要求了喷嘴36的细节。
虽然已经公开本发明的实施方案，但所属技术领域的一般工作人员将意识到某些修改可在本公开的范围内。出于这个原因，以上权利要求应被研究来决定本公开的真实范围和内容。

Claims (6)

1.一种用于空气循环机中的喷嘴和护罩组合，其包括：
板和护罩，所述护罩相对于所述板在第一轴向方向上绕着所述护罩的中心轴弯曲；
多个叶片，其在第二轴向方向上背离所述板延伸，其中所述多个叶片背离所述板延伸一个高度和界定为两个相邻叶片之间的最近距离的宽度，所述高度与所述宽度的比介于1.7377与2.1612之间，其中存在19个周向间隔的所述叶片，在全部19个所述叶片之间界定总流量面积且所述总流量面积介于2.7491平方英寸与3.4191平方英寸之间（17.736平方厘米到22.058平方厘米）。
2.根据权利要求1所述的喷嘴和护罩组合，其中所述板和所述护罩由具有碳化钨防腐涂层的基体铝材料形成。
3.一种空气循环机，其包括：
第一级涡轮转子和第二级涡轮转子，所述第一和第二级涡轮转子被构造成驱动轴，且压缩机转子由所述轴驱动，且风扇转子由所述轴驱动；
护罩和喷嘴组合，其被提供在邻近所述第一级涡轮转子处，其中所述喷嘴处于所述第一级涡轮转子上游的位置，且所述护罩弯曲到所述第一级涡轮转子下游的位置，且所述护罩和喷嘴组合包括板和所述护罩，所述护罩相对于所述板在第一轴向方向上绕着所述护罩的中心轴弯曲；和
多个叶片，其在第二轴向方向上背离所述板延伸，其中所述多个叶片背离所述板延伸一个高度和界定为两个相邻叶片之间的最近距离的宽度，所述高度与所述宽度的比介于1.7377与2.1612之间，其中存在19个周向间隔的所述叶片，在全部19个所述叶片之间界定总流量面积且所述总流量面积介于2.7491平方英寸与3.4191平方英寸之间（17.736平方厘米到22.058平方厘米）。
4.根据权利要求3所述的空气循环机，其中所述板和所述护罩由具有碳化钨防腐涂层的基体铝材料形成。
5.一种维修空气循环机的方法，其包括以下步骤：
(a) 从空气循环机中邻近第一级涡轮转子的位置处移除喷嘴和护罩组合，且用更换的护罩和喷嘴组合来替换被移除的护罩和喷嘴组合；和
(b) 所述更换的护罩和喷嘴组合包括：板和护罩，所述护罩相对于所述板在第一轴向方向上绕着所述护罩的中心轴弯曲；和多个叶片，其在第二轴向方向上背离所述板延伸，其中所述多个叶片背离所述板延伸一个高度和界定为两个相邻叶片之间的最近距离的宽度，所述高度与所述宽度的比介于1.7377与2.1612之间，
其中存在19个周向间隔的所述叶片，在全部19个所述叶片之间界定总流量面积且所述总流量面积介于2.7491平方英寸与3.4191平方英寸之间（17.736平方厘米到22.058平方厘米）。
6.根据权利要求5所述的方法，其中所述板和所述护罩由具有碳化钨防腐涂层的基体铝材料形成。
CN201410167273.5A 2013-04-24 2014-04-24 空气循环机、其喷嘴和护罩组合及其维修方法 Active CN104121038B (zh)

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US13/869,045 US10072512B2 (en) 2013-04-24 2013-04-24 Turbine nozzle and shroud

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US11293451B2 (en) * 2019-10-02 2022-04-05 Hamilton Sundstrand Corporation Coating for compressor outlet housing

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