-
公开(公告)号：US08414255B2
公开(公告)日：2013-04-09
申请号：US12708207
申请日：2010-02-18
摘要： There is disclosed an impingement cooling arrangement for a gas turbine engine (6), and an engine provided with such an arrangement. The cooling arrangement comprises at least part of a casing (21) configured to define a flowpath for the passage of hot gases through the engine, and a manifold (22) configured to direct cooling air against an outer surface (23) of the casing for impingement cooling thereof. The arrangement is characterized by said manifold (22) being configured to direct a primary flow of cooling air (65) against a first area (64) of the casing outer surface (23) for impingement cooling of said first area, and to recirculate (66) at least a portion of said primary flow of cooling air after impingement against said first area (64) and to direct at least a portion of the recirculated flow against a second area (67) of the casing outer surface (23) for impingement cooling of said second area (67). In a preferred arrangement, the manifold (22) is spaced from said casing (21) so as to define a space (41) between the manifold and the outer surface (23) of the casing, and the manifold (22) further comprises a baffle (46) extending at least partially across said space, substantially towards said casing (21), so as to at least partially divide said space (41) into a first region (58) adjacent said first area (64), and a second region (59) adjacent said second area (67).
摘要翻译： 公开了一种用于燃气涡轮发动机（6）的冲击冷却装置和具有这种装置的发动机。 冷却装置包括构造成限定用于使热气体通过发动机的流路的壳体（21）的至少一部分，以及构造成将冷却空气引导到壳体的外表面（23）的歧管（22），用于 冲击冷却。 该装置的特征在于，所述歧管（22）构造成将冷却空气（65）的主流引导到壳体外表面（23）的第一区域（64）上，用于冲击冷却所述第一区域，并使 66）在冲击所述第一区域（64）之后的所述主要冷却空气流的至少一部分并且将所述再循环流的至少一部分引导到所述壳体外表面（23）的用于冲击的第二区域（67） 所述第二区域（67）的冷却。 在优选的布置中，歧管（22）与所述壳体（21）间隔开，以便在歧管和壳体的外表面（23）之间限定一个空间（41），而歧管（22）还包括一个 挡板（46）至少部分地延伸穿过所述空间，基本上朝向所述壳体（21）延伸，以便至少部分地将所述空间（41）分隔成与所述第一区域（64）相邻的第一区域（58），并且第二 邻近所述第二区域（67）的区域（59）。
-
公开(公告)号：US06418806B1
公开(公告)日：2002-07-16
申请号：US09433953
申请日：1999-11-04
IPC分类号： G01K1116
CPC分类号： G01N25/50
摘要： The fire resistance of components normally subject to a standard flame test is evaluated using low temperature model tests. Reynolds number, Froude number, the pressure ratio of the flame to the surrounding atmosphere are matched in the modelling parameters and account is taken of the Prandtl number. Also, the model flow is controlled so as to match the change of momentum flux ratio in the flow through the burner used in a standard flame test. The method allows testing of easily produced model components at temperatures less than 90° C., with savings of cost and time.
摘要翻译： 通常使用低温模型试验来评估通常进行标准火焰试验的部件的耐火性。 雷诺数，弗劳德数，火焰与周围大气的压力比在建模参数中匹配，并考虑了普朗特数。 此外，模型流量被控制以便匹配在通过标准火焰测试中使用的燃烧器的流动中的动量通量比的变化。 该方法允许在低于90℃的温度下测试易于生产的模型组件，节省成本和时间。
-
公开(公告)号：US09243513B2
公开(公告)日：2016-01-26
申请号：US13267256
申请日：2011-10-06
申请人： Zahid M Hussain , Christopher T J Sheaf , Andrew J Mullender , David MacManus , Brian A Handley
发明人： Zahid M Hussain , Christopher T J Sheaf , Andrew J Mullender , David MacManus , Brian A Handley
摘要： A fluid impingement arrangement comprising a supply manifold and at least one nozzle exit coupled to the supply manifold. The nozzle exit is arranged as a Coanda surface having a restriction and has at least one static pressure tapping that cross-connects two regions of the restriction to induce passive oscillation in a fluid jet passing through the nozzle exit.
摘要翻译： 流体冲击装置，其包括供应歧管和联接到供应歧管的至少一个喷嘴出口。 喷嘴出口被布置为具有限制的柯安达表面，并且具有至少一个静压力攻丝，该静压力攻丝跨过限制的两个区域，以引导通过喷嘴出口的流体射流中的被动振荡。
-
公开(公告)号：US08561924B2
公开(公告)日：2013-10-22
申请号：US12076076
申请日：2008-03-13
摘要： A pipe for carrying a fluid, having a longitudinal axis and defining a radial aperture for release of a jet of fluid having a radial direction component α, the aperture having an aspect ratio greater than 2 and arranged with its elongate axis within 30 degrees of the longitudinal axis and having area greater than 0.2 the cross-sectional area of the pipe, the fluid jet having an angle α between 30 and 80 degrees from the longitudinal axis.
摘要翻译： 用于承载流体的管道，其具有纵向轴线并且限定用于释放具有径向方向分量α的流体射流的径向孔，所述孔具有大于2的纵横比并且其细长轴线布置在其中的30度内 纵向轴线并且具有大于0.2的管的横截面积的面积，流体射流与纵向轴线的角度α在30和80度之间。
-
公开(公告)号：US08511056B2
公开(公告)日：2013-08-20
申请号：US12768040
申请日：2010-04-27
CPC分类号： B64C1/1453 , B64C7/02 , F01D25/18 , F02C7/00 , F05D2240/14
摘要： Breather air, containing oil mist, is discharged from a nacelle 4 of a gas turbine engine through an exhaust port 26 at a surface 22 of the nacelle 4. Energized air, at relatively high velocity is discharged from a clean air outlet 28, and forms a barrier between the breather air and the external surface 22, so preventing contamination of the surface 22 by oil deposited from the breather air.
摘要翻译： 包含油雾的通气空气通过机舱4的表面22处的排气口26从燃气轮机的机舱4排出。以较高速度通电的空气从清洁空气出口28排出，形成 在通气空气和外表面22之间形成障碍物，从而防止表面22被从呼吸空气沉积的油污染。
-
-
-
-
搜索结果
5 条记录 (耗时 0.017 秒)
