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公开(公告)号：US20120057961A1
公开(公告)日：2012-03-08
申请号：US13216824
申请日：2011-08-24
CPC分类号： F01D11/10 , F01D11/122 , F05D2240/11 , F05D2260/202 , Y02T50/676 , Y10T29/4932
摘要： A shroud segment for a turbine stage of a gas turbine engine forms an endwall for the working gas annulus of the stage. The segment also provides a close clearance to the tips of a row of turbine blades which sweep across the segment. In use, a mainstream flow of the working gas passes through the passages formed between adjacent turbine blades. The segment has a plurality of cooling holes and respective air feed passages for the cooling holes. The cooling holes are distributed over that part of the gas-washed surface of the segment which is swept by the blade tips. The cooling holes deliver, in use, cooling air which spreads over the gas-washed surface. The feed passages are configured such that the delivered air has swirl directions which are co-directionally aligned with the swirl directions of the mainstream flow at the segment.
摘要翻译： 用于燃气涡轮发动机的涡轮级的护罩段形成用于工作台的工作气体环的端壁。 该段还提供了跨越段的一排涡轮机叶片的尖端的紧密间隙。 在使用中，工作气体的主要流动通过形成在相邻涡轮叶片之间的通道。 该段具有用于冷却孔的多个冷却孔和各自的空气供给通道。 冷却孔分布在由叶片尖端扫过的段的气体洗涤表面的那部分上。 冷却孔在使用中提供散布在气洗表面上的冷却空气。 供给通道构造成使得所输送的空气具有与该段主流流动的涡流方向共同对齐的旋流方向。
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公开(公告)号：US20120219401A1
公开(公告)日：2012-08-30
申请号：US13368718
申请日：2012-02-08
IPC分类号： F01D9/02
CPC分类号： F01D25/12 , F01D5/186 , F01D5/187 , F01D9/06 , F01D11/08 , F01D11/122 , F05D2240/11 , F05D2240/81 , F05D2260/20 , F05D2260/202
摘要： A component of a turbine stage of a gas turbine engine is provided, the component forming an endwall for the working gas annulus of the stage. The component has one or more internal plena behind the endwall which, in use, contain a flow of cooling air. The component further has a plurality of exhaust holes in the endwall. The holes connect the plena to a gas-washed surface of the endwall such that the cooling air effuses through the holes to form a cooling film over the gas-washed surface. Each exhaust hole has a flow cross-sectional area which is greater at an intermediate position between the entrance of the hole from the respective plenum and the exit of the hole to the gas-washed surface than it is at said exit.
摘要翻译： 提供了一种燃气涡轮发动机的涡轮级的部件，该部件形成了用于工作台的工作气体环的端壁。 该组件在端壁后面具有一个或多个内部斑点，其在使用中包含冷却空气流。 该部件还在端壁中具有多个排气孔。 这些孔将绦虫连接到端壁的气体洗涤表面，使得冷却空气通过孔流出，以在气洗表面上形成冷却膜。 每个排气孔的流动横截面面积在从相应的压力室的孔的入口与孔的出口到气体洗涤表面之间的中间位置处比在所述出口处更大。
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公开(公告)号：US20120027576A1
公开(公告)日：2012-02-02
申请号：US13177151
申请日：2011-07-06
CPC分类号： F01D11/08 , F01D11/10 , F01D11/24 , F01D25/12 , F05D2240/11 , F05D2250/313 , F05D2250/314 , F05D2260/202 , Y02T50/676 , Y10T29/49323
摘要： A shroud segment for a turbine stage of a gas turbine engine forms an endwall for the working gas annulus of the stage. The segment also provides a close clearance to the tips of a row of turbine blades which sweep across the segment. In use a leakage flow of the working gas passes through the clearance gap between the blade tips and the segment. The segment has a plurality of cooling holes and respective air feed passages for the cooling holes. The cooling holes are distributed over that part of the gas-washed surface of the segment which is swept by the blade tips. The cooling holes deliver, in use, cooling air which spreads over the gas-washed surface. The feed passages are configured such that the delivered air opposes the leakage flow of the working gas.
摘要翻译： 用于燃气涡轮发动机的涡轮级的护罩段形成用于工作台的工作气体环的端壁。 该段还提供了跨越段的一排涡轮机叶片的尖端的紧密间隙。 在使用中，工作气体的泄漏流通过叶片尖端和段之间的间隙。 该段具有用于冷却孔的多个冷却孔和各自的空气供给通道。 冷却孔分布在由叶片尖端扫过的段的气体洗涤表面的那部分上。 冷却孔在使用中提供散布在气洗表面上的冷却空气。 供给通道构造成使得所输送的空气与工作气体的泄漏流相反。
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公开(公告)号：US20120251295A1
公开(公告)日：2012-10-04
申请号：US13408251
申请日：2012-02-29
IPC分类号： F01D5/18
CPC分类号： F23R3/002 , F01D11/24 , F05D2240/11 , F05D2260/201 , F05D2260/202 , F05D2260/205 , F23R2900/03041
摘要： A component of a gas turbine engine is provided. The component includes an external wall which, in use, is exposed on one surface thereof to working gas flowing through the engine. The component further includes effusion cooling holes formed in the external wall. In use, cooling air blows through the cooling holes to form a cooling film on the surface of the external wall exposed to the working gas. The component further includes an air inlet arrangement which receives the cooling air for distribution to the cooling holes. The component further includes a plurality of metering feeds and a plurality of supply plena. The metering feeds meter the cooling air from the air inlet arrangement to respective of the supply plena, which in turn supply the metered cooling air to respective portions of the cooling holes.
摘要翻译： 提供燃气涡轮发动机的部件。 该组件包括外壁，其在使用中在其一个表面上暴露于流过发动机的工作气体。 该部件还包括形成在外壁中的排出冷却孔。 在使用中，冷却空气吹过冷却孔，在暴露于工作气体的外壁的表面上形成冷却膜。 该部件还包括一个空气入口装置，其接收用于分配到冷却孔的冷却空气。 该组件还包括多个计量馈送和多个供应斑点。 计量供给将来自进气装置的冷却空气测量到供应凹槽的相应位置，该供应凹槽又将计量的冷却空气供应到冷却孔的相应部分。
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