CN106948868A - 用于涡轮构件的超疏水表面增强的***及方法 - Google Patents

用于涡轮构件的超疏水表面增强的***及方法 Download PDF

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CN106948868A
CN106948868A CN201610961842.2A CN201610961842A CN106948868A CN 106948868 A CN106948868 A CN 106948868A CN 201610961842 A CN201610961842 A CN 201610961842A CN 106948868 A CN106948868 A CN 106948868A
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super hydrophobic
hydrophobic surface
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T.W.范雷二世
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General Electric Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/28Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/286Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/359Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/28Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/28Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288Protective coatings for blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00Stators
    • F01D9/02Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/30Application in turbines
    • F05D2220/31Application in turbines in steam turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/10Manufacture by removing material
    • F05D2230/13Manufacture by removing material using lasers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/90Coating; Surface treatment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/10Metals, alloys or intermetallic compounds
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/50Intrinsic material properties or characteristics
    • F05D2300/512Hydrophobic, i.e. being or having non-wettable properties

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

本申请提供了一种用于与蒸汽涡轮发动机一起使用的构件。构件可包括金属表面和形成在金属表面中的超疏水表面图案。

Description

用于涡轮构件的超疏水表面增强的***及方法
技术领域
本申请及所得专利大体上涉及蒸汽涡轮发动机,并且更具体地涉及用于涡轮构件的超疏水表面增强的***及方法,其用于以降低的腐蚀风险显著地自清洁表面。
背景技术
发电***中的构件如涡轮转子叶片和涡轮定子叶片经常暴露于苛刻的侵蚀性工作环境。这些工作环境可导致由例如水滴和/或细尘引起的构件侵蚀。其中冷凝的水可包含已知有助于环境协助侵蚀的元素。这些问题可在涡轮停止和启动时由不断的湿/干循环加剧。因此,涡轮叶片的侵蚀可为成问题的,并且可导致叶片变薄、疲劳故障等。
发明内容
因此,本申请及所得专利提供了一种用于与蒸汽涡轮发动机一起使用的构件。构件可包括金属表面和形成在金属表面中用于显著自清洁表面的超疏水表面图案。
本申请及所得专利还提供了一种在涡轮构件的金属表面上产生超疏水表面图案的方法。该方法可包括以下步骤:绕着激光器定位涡轮构件、将脉冲能量束从激光器发射至涡轮构件的金属表面,以及在涡轮构件的金属表面上形成超疏水表面图案。
本申请及所得专利还提供了一种超疏水表面增强***。超疏水表面增强***可包括短脉冲激光器和涡轮构件。短脉冲激光器在涡轮构件的金属表面上产生超疏水表面图案用于显著自清洁表面。
技术方案1. 一种用于与蒸汽涡轮发动机一起使用的构件,包括:
金属表面;以及
形成在所述金属表面中的超疏水表面图案。
技术方案2. 根据技术方案1所述的构件,其特征在于,所述构件包括转子叶片。
技术方案3. 根据技术方案1所述的构件,其特征在于,所述构件包括定子叶片。
技术方案4. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案包括纳米结构图案。
技术方案5. 根据技术方案4所述的构件,其特征在于,所述纳米结构图案包括大约200nm到2μm的结构。
技术方案6. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案包括微结构图案。
技术方案7. 根据技术方案6所述的构件,其特征在于,所述微结构图案包括大约10到50μm的结构。
技术方案8. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案包括分层图案。
技术方案9. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案由能量束形成在所述金属表面中。
技术方案10. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案由激光器形成在所述金属表面中。
技术方案11. 根据技术方案1所述的构件,其特征在于,所述超疏水表面图案由超短脉冲激光器形成在所述金属表面中。
技术方案12. 一种产生涡轮构件的金属表面上的超疏水表面图案的方法,包括:
绕着激光器定位所述涡轮构件;
将脉冲能量束从所述激光器发射至所述涡轮构件的所述金属表面;以及
将所述超疏水表面图案形成在所述涡轮构件的所述金属表面上。
技术方案13. 根据技术方案12所述的方法,其特征在于,将所述超疏水表面图案形成在所述涡轮构件的所述金属表面上的步骤包括将纳米结构图案形成在所述涡轮构件的所述金属表面上。
技术方案14. 根据技术方案12所述的方法,其特征在于,将所述超疏水表面图案形成在所述涡轮构件的所述金属表面上的步骤包括将微结构图案形成在所述涡轮构件的所述金属表面上。
技术方案15. 根据技术方案12所述的方法,其特征在于,将所述超疏水表面图案形成在所述涡轮构件的所述金属表面上的步骤包括将分层图案形成在所述涡轮构件的所述金属表面上。
技术方案16. 一种超疏水表面增强***,包括:
短脉冲激光器;以及
涡轮构件;
其中所述激光器产生所述涡轮构件的金属表面上的超疏水表面图案。
技术方案17. 根据技术方案16所述的超疏水表面增强***,其特征在于,所述构件包括转子叶片或定子叶片。
技术方案18. 根据技术方案16所述的超疏水表面增强***,其特征在于,所述超疏水表面图案包括纳米结构图案。
技术方案19. 根据技术方案16所述的超疏水表面增强***,其特征在于,所述超疏水表面图案包括微结构图案。
技术方案20. 根据技术方案16所述的超疏水表面增强***,其特征在于,所述超疏水表面图案包括分层图案。
在审阅连同若干附图进行时的以下详细描述和所附权利要求时,本申请及所得专利的这些及其它的特征和改进将对本领域技术人员而言变得显而易见。
附图说明
图1为用于驱动负载的蒸汽涡轮发动机的示意图。
图2为如可在本文中描述的超疏水表面增强***的示意图。
图3A为超疏水表面处理图案的实例的示意图。
图3B为超疏水表面处理图案的实例的示意图。
图3C为超疏水表面处理图案的实例的示意图。
部件列表
10 蒸汽涡轮发动机
20 蒸汽发生器
30 高压区段
40 低压区段
50 冷凝器
60 轴
70 负载
100 超疏水表面增强***
110 涡轮构件
120 能量源
130 激光器
140 脉冲能量束
150 表面
160 超疏水表面图案
170 纳米结构图案
180 微结构图案
190 分层图案。
具体实施方式
现在参照附图,其中相似的标记表示若干视图各处的相似元件,图1为如可在本文中使用的蒸汽涡轮发动机10的实例的示意图。蒸汽涡轮发动机10可包括蒸汽发生器20。蒸汽发生器20可将蒸汽提供至高压区段30。蒸汽可在高压区段30内膨胀,从高压区段30排出,并且接着经过至低压区段40。在低压区段40中,蒸汽可再次膨胀,并且接着排出至冷凝器50。高压区段30和低压区段40可驱动一个或更多个轴60。轴60可驱动负载70,如发电机等。
蒸汽涡轮发动机10可使用以煤、核反应、天然气、液体燃料、各种类型的合成气,和/或其它类型的燃料以及它们的混合物燃烧的锅炉。蒸汽涡轮发动机10可在联合循环应用中操作,其中来自燃气涡轮发动机的废热可收集在余热回收蒸汽发生器中以提供蒸汽。蒸汽涡轮发动机10可为由General Electric公司(Schenectady, New York)提供的一定数量的不同燃气涡轮发动机中的任何一种。蒸汽涡轮发动机10可具有不同构造,并且可使用其它类型的构件。其它类型的蒸汽涡轮发动机也可在本文中使用。多个蒸汽涡轮发动机、其它类型的涡轮以及其它类型的发电装备也可在本文中一起使用。
图2示出了如可在本文中描述的超疏水表面增强***100的实例。超疏水表面增强***100可与涡轮构件110一起使用。涡轮构件110可为涡轮转子叶片、涡轮定子叶片,或经受苛刻操作状态的任何类型的金属构件。金属构件可由超级合金等制成。不同类型的材料可在本文中使用。其它构件和其它构造可在本文中使用。
超疏水表面增强***100可包括能量源120。在该实例中,能量源120可为激光器130等。更具体而言,激光器130可为飞秒激光器或超短脉冲激光器等。其它类型的激光器130和其它类型的能量源120可在本文中使用。能量源120可将脉冲能量束140引导到涡轮构件110的金属表面150上。能量束140可在涡轮构件110的金属表面150上产生超疏水表面图案160,以便修改金属表面150的润湿性质和其它性质。涡轮构件110的金属表面150上的超疏水表面图案160可延伸用于涡轮构件110的全部或部分。不同类型的超疏水表面图案160可以以任何适合的尺寸、形状或构造产生。
经由实例,超疏水表面图案160可呈如图3A中所示的纳米结构图案170、如图3B中所示的微结构图案180和/或如图3C中所示的组合分层图案190的形式。纳米结构图案170可具有大约200nm到大约2μm的范围中的结构。也可使用其它尺寸。微结构图案180可具有大约10μm到大约50μm的范围中的结构。也可使用其它尺寸。超疏水表面图案160可具有大于大约五十度(50°)左右的接触角和低辗轧(roll off)角。具有其它类型的适合尺寸、形状和构造的结构可在本文中使用。不同超疏水表面图案160的组合可在本文中一起在涡轮构件110上使用。
超疏水表面图案160可使液体粘住或润湿涡轮构件110的金属表面150的能力改变或变化。假定如此,表面150可不太可能保持液体流中的颗粒。超疏水表面图案160因此可认作是自清洁的,以便排斥其上的水和灰尘。涡轮构件110的金属表面150的润湿性的减小或消除可降低暴露于保持在液体流中的化学制品的风险。该减小或消除还可降低腐蚀、生锈和应力腐蚀开裂的风险。较细的水滴的快速消除还可减小液滴能量,并且因此影响下游的侵蚀风险。超疏水表面图案160的使用还可导致金属表面150的改进的总体清洁度,并且因此由于表面污染物和/或碎屑的减少的累积而改进性能。超疏水表面图案160因此可改进涡轮寿命,降低冲击侵蚀速率,降低环境协助腐蚀风险,降低生锈风险,提供较清洁的表面,并且提供总体改进的性能。
将显而易见的是,前文仅涉及本申请及所得专利的某些实施例。许多变化和改型可由本领域技术人员在本文中作出,而不脱离如由以下权利要求及其等同物限定的本发明的大体精神和范围。

Claims (10)

1. 一种用于与蒸汽涡轮发动机一起使用的构件,包括:
金属表面;以及
形成在所述金属表面中的超疏水表面图案。
2.根据权利要求1所述的构件,其特征在于,所述构件包括转子叶片。
3.根据权利要求1所述的构件,其特征在于,所述构件包括定子叶片。
4.根据权利要求1所述的构件,其特征在于,所述超疏水表面图案包括纳米结构图案。
5.根据权利要求4所述的构件,其特征在于,所述纳米结构图案包括大约200nm到2μm的结构。
6.根据权利要求1所述的构件,其特征在于,所述超疏水表面图案包括微结构图案。
7.根据权利要求6所述的构件,其特征在于,所述微结构图案包括大约10到50μm的结构。
8.根据权利要求1所述的构件,其特征在于,所述超疏水表面图案包括分层图案。
9.根据权利要求1所述的构件,其特征在于,所述超疏水表面图案由能量束形成在所述金属表面中。
10.根据权利要求1所述的构件,其特征在于,所述超疏水表面图案由激光器形成在所述金属表面中。
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