公开(公告)号：US20160115805A1

公开(公告)日：2016-04-28

申请号：US14878862

申请日：2015-10-08

Applicant: General Electric Company

Inventor： Nathan Evan McCurdy GIBSON ,  Rahul Anil BIDKAR ,  Azam Mihir THATTE ,  Narayana SHASTRY ,  Hariharan MANICKAVASAGAM SAROJINI

IPC: F01D11/00 ,  F01D11/02

CPC classification number: F01D11/001 ,  F01D11/02 ,  F01D11/025 ,  F01D11/04 ,  F01D11/08 ,  F01D11/10 ,  F01D11/12 ,  F01D11/14 ,  F01D11/16 ,  F16J15/441

Abstract: A seal apparatus for a rotary machine, including a plurality of sealing assembly segments surrounding a rotor element which is mounted for rotation about a longitudinal axis and has an outer surface. Each of the segments includes a shoe with one or more labyrinth teeth facing the outer surface and a shoe plate disposed downstream of the one or more labyrinth seal teeth and configured to generate an aerodynamic force between the shoe plate and the outer surface of the rotor element. The shoe is further configured to be flexible in a radial-axial plane in response to fluid film forces generated by interaction of the sealing assembly segment and the rotor element, and an axially-oriented beam spring connects the shoe to a stationary seal body.

Abstract translation: 一种用于旋转机器的密封装置，包括围绕转子元件的多个密封组件段，所述密封组件段安装成围绕纵向轴线旋转并具有外表面。 每个节段包括具有面向外表面的一个或多个迷宫齿的鞋和设置在一个或多个迷宫式密封齿的下游的鞋板，并且构造成在鞋板和转子元件的外表面之间产生空气动力 。 鞋子进一步构造成响应于由密封组件段和转子元件的相互作用产生的流体膜力而在径向轴向平面中是柔性的，并且轴向定向梁弹簧将鞋连接到固定密封体。

公开(公告)号：US20150083227A1

公开(公告)日：2015-03-26

申请号：US14037790

申请日：2013-09-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Rahul Anil BIDKAR ,  Ambarish Jayant KULKARNI ,  Luc Stephane LEBLANC ,  Vaibhav BAHADUR

IPC: F15D1/12 ,  C23C4/10 ,  C23C4/12

CPC classification number: C09D5/1681 ,  C08K2003/221 ,  C09D5/00 ,  C23C4/11 ,  C23C4/134 ,  C23C4/18 ,  F15D1/003 ,  F15D1/0085 ,  Y10T137/0318 ,  Y10T428/13 ,  Y10T428/1393 ,  Y10T428/24355

Abstract: An article includes a substrate with a coating having asperities such that an average spacing between the asperities is between about 0.01 and about 1.5 micron. An average surface roughness of the coating is up to about 2 microns, and an average porosity of the coating is in the range from about 35% to about 70%. A material to reduce surface energy is disposed on the coating. A method for making such an article and a method for decreasing fluid drag across such an article are also provided.

Abstract translation: 一种制品包括具有粗糙度的涂层的基底，使得凹凸之间的平均间距在约0.01至约1.5微米之间。 涂层的平均表面粗糙度高达约2微米，涂层的平均孔隙率在约35％至约70％的范围内。 用于降低表面能的材料设置在涂层上。 还提供了制造这种制品的方法和减少跨越这种制品的流体阻力的方法。