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14 条记录 (耗时 0.035 秒)

    Modified face seal for positive film stiffness
    2.
    发明授权
    Modified face seal for positive film stiffness 失效
    改良的正面密封用于正片刚度

    公开(公告)号：US4291887A

    公开(公告)日：1981-09-29

    申请号：US92145

    申请日：1979-11-07

    申请人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Izhak Etsion ,  Abraham Lipshitz

    发明人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Izhak Etsion ,  Abraham Lipshitz

    IPC分类号： F16J15/34 ,  F16J15/40

    CPC分类号： F16J15/3404

    摘要： The object of the invention is to improve the film stiffness of a face seal without increasing the sealing and dam area.The improved sealing apparatus (16) has a primary seal ring (20) in the form of a nose piece. A spring (24) forces a sealing surface (28) on the seal ring into sealing contact with a seat (18) to form a face seal. A circumferential clearance seal is formed in series with this face seal by a lip (34) on the nose piece. The width of the surface (36) of the lip is substantially the same as the width of the sealing surface (28) on the face seal. Also the clearance between the surface (36) on the lip and the shaft (10) is substantially the same as the spacing between the face sealing surfaces (28 and 30) on the face seal when the shaft is rotating.The circumferential clearance seal restricts the flow of fluid from a main cavity (14) to an intermediate cavity (32) with a resulting pressure drop. The hydrostatic opening face is strongly dependent on the face seal clearance, and the desired axial stiffness is achieved.

    摘要翻译： 本发明的目的是在不增加密封和坝面积的情况下提高面密封的膜刚度。 改进的密封装置（16）具有鼻部形式的主密封环（20）。 弹簧（24）迫使密封环上的密封表面（28）与座（18）密封接触以形成面密封。 圆周间隙密封件通过鼻片上的唇缘（34）与该面部密封件串联形成。 唇缘的表面（36）的宽度与面密封件上的密封表面（28）的宽度基本相同。 此外，当轴旋转时，唇缘上的表面（36）与轴（10）之间的间隙基本上与面密封件上的面密封表面（28和30）之间的间隔相同。 周向间隙密封限制流体从主腔（14）到中间腔（32）的流动，产生压力降。 流体静力开启面很大程度上取决于表面密封间隙，实现了所需的轴向刚度。

    Laser surface textured fluid-film bearing
    3.
    发明申请
    Laser surface textured fluid-film bearing 审中-公开
    激光表面纹理流体膜轴承

    公开(公告)号：US20060051000A1

    公开(公告)日：2006-03-09

    申请号：US10541754

    申请日：2004-01-11

    申请人： Izhak Etsion ,  Victor Brizmer ,  Yuri Kligerman

    发明人： Izhak Etsion ,  Victor Brizmer ,  Yuri Kligerman

    IPC分类号： F16C32/06

    CPC分类号： F16C33/1075 ,  F16C17/047 ,  F16C33/106 ,  F16C2240/44 ,  F16C2300/02

    摘要： A fluid-film bearing including: (a) a first surface region having a first bearing surface, for attaching to a first machine component; (b) a second surface region having a second bearing surface, for attaching to a second machine component; the surface regions designed and configured such that first surface and the second surface are disposed opposite one another, the surface regions further designed and configured such that the first surface and the second surface move in a relative motion with respect to one another and (c) a fluid disposed between the surfaces, wherein at least one of the surfaces is a micropore-containing surface having a plurality of micropores disposed so as to effect an equivalent clearance convergence between the surfaces, in a direction of the relative motion, such that the relative motion, acting on the fluid, generates a pressure so as to generate a lifting force between the surfaces.

    摘要翻译： 一种流体膜轴承，包括：（a）具有第一轴承表面的第一表面区域，用于附接到第一机器部件; （b）具有第二支承表面的第二表面区域，用于附接到第二机器部件; 所述表面区域被设计和构造成使得第一表面和第二表面彼此相对设置，所述表面区域进一步被设计和构造成使得所述第一表面和所述第二表面相对于彼此相对运动，并且（c） 设置在所述表面之间的流体，其中所述表面中的至少一个是具有多个微孔的微孔表面，所述多孔微孔设置成在所述相对运动的方向上实现所述表面之间的等效的间隙会聚，使得所述相对运动 作用在流体上的运动产生压力，以便在表面之间产生提升力。

    Zero-leakage non-contacting mechanical face seal for rotary machines
    8.
    发明授权
    Zero-leakage non-contacting mechanical face seal for rotary machines 失效
    用于旋转机器的零泄漏非接触机械面密封

    公开(公告)号：US4407509A

    公开(公告)日：1983-10-04

    申请号：US340246

    申请日：1982-01-18

    申请人： Izhak Etsion

    发明人： Izhak Etsion

    IPC分类号： F16J15/34 ,  F16J15/40

    CPC分类号： F16J15/3412

    摘要： A hydrodynamic, non-contacting end-face seal for a rotary machine comprises a rotor mounted on the machine shaft and a ring-shaped stator facing the flat and smooth surface of the rotor at a short distance. The stator encloses the machine shaft, is eccentrically positioned in respect of the rotor center, and is urged towards the rotor surface by a helical spring. The surface of the stator ring is shaped to form a circular rim separated from the rotor surface by a very small gap of varying width, and the space enclosed by this rim is raised to a higher pressure than the surroundings by the hydrodynamic action of the surface velocity of the rotor on the liquid in the machine, by making the gap width as follows: the gap width between rotor and stator is of a mechanically permissible minimum in all points of the rim at which the velocity vector of the rotor surface extends from the inside of the rim to the outside, and the gap width is larger in all points of the rim at which the velocity vector extends from the outside to the inside. The gap width is changed, in accordance with pressure conditions in the machine by action of the helical sprin

    摘要翻译： 用于旋转机械的流体动力学非接触式端面密封件包括安装在机器轴上的转子和在短距离处面对转子的平坦和平滑表面的环形定子。 定子包围机器轴，相对于转子中心偏心定位，并且通过螺旋弹簧被推向转子表面

    Lubricated seals having micropores
    10.
    发明授权
    Lubricated seals having micropores 有权
    润滑密封件具有微孔

    公开(公告)号：US06341782B1

    公开(公告)日：2002-01-29

    申请号：US09518237

    申请日：2000-03-03

    申请人： Izhak Etsion

    发明人： Izhak Etsion

    IPC分类号： F16J912

    CPC分类号： F16J15/3412 ,  F16J15/3424

    摘要： A lubricated hydrostatic seal comprising (a) surface regions having opposing surfaces; (b) a plurality of micropores in one or more of said surfaces having a pore geometry; and (c) a flow of fluid between said surfaces, wherein said flow of fluid past said micropores provides a lifting force between said surfaces. In a preferred embodiment, the opposing surfaces of the surface regions are nominally parallel. Nominally-parallel surfaces are simple to manufacture and are considerably less expensive than the various converging-surface configurations of the prior art. The nominally-parallel surface configuration can also be utilized in both liquid-lubricated and gas-lubricated hydrodynamic seal applications, and in hybrid-seal applications in which both hydrodynamic and hydrostatic lift are generated.

    摘要翻译： 一种润滑的静水密封，包括（a）具有相对表面的表面区域; （b）在一个或多个所述表面中具有孔几何形状的多个微孔; 和（c）所述表面之间的流体流，其中所述流体经过所述微孔的流动在所述表面之间提供提升力。 在优选实施例中，表面区域的相对表面名义上是平行的。 名义上平行的表面制造简单，并且比现有技术的各种会聚表面构造便宜得多。 名义上平行的表面结构也可以用于液体润滑和气体润滑的流体动力学密封应用中，以及在其中产生流体动力学和静液压升力的混合密封应用中。