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公开(公告)号：US20200149470A1
公开(公告)日：2020-05-14
申请号：US16672592
申请日：2019-11-04
Applicant: ROLLS-ROYCE plc
Inventor： Peter A. EVANS
Abstract: A compressor stage comprising a pair of bladed discs spaced apart from one another having a plurality of bleed tubes located in the space between the bladed discs. Each bleed tube has an internal and an external surface extending radially from an inter-disc cavity at the radially innermost section of the tube to a rim of the bladed discs at radially outermost section of the tube. The bleed tubes are positioned between the bladed discs, such that the bleed tubes remove a portion of air passing through the compressor stage and direct it to an area within the inter-disc spacing. The geometric shape of the internal bore of each of the bleed tubes changes along its lengths. The cross-section of each of the bleed tubes may have a cross sectional area that changes from a substantially non-polygonal shape at the radially outermost end to a substantially polygonal shape at the radially innermost end.
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公开(公告)号：US20190003335A1
公开(公告)日：2019-01-03
申请号：US16014071
申请日：2018-06-21
Applicant: ROLLS-ROYCE plc
Inventor： Peter A. EVANS , Adam CARPENTER
Abstract: A cooling arrangement for cooling a bearing in a gas turbine engine, the gas turbine engine comprising a compressor section, a combustor section and a turbine section, the turbine section comprising a low pressure (LP) sub-section and a high pressure (HP) sub-section, a first shaft for carrying rotors of the compressor section and of the HP turbine sub-section and a second shaft for carrying rotors of the LP turbine sub-section the second shaft coaxially aligned with and located within the first shaft, and the bearing arranged downstream of the HP turbine sub-section and upstream of the LP turbine sub-section and arranged for rotatably mounting the second shaft with respect to a support structure. The cooling arrangement comprising a first bleed taken off from the compressor, one or more inlet holes in the second shaft located upstream of the combustor and one or more outlet holes in the second shaft located downstream of the HP turbine sub-section and upstream of the bearing, and an air guide for guiding flow from the first bleed to the one or more inlet holes whereby to separate the flow from the first bleed from a coolant flow directed to cool discs of the turbine section.
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公开(公告)号：US20160333708A1
公开(公告)日：2016-11-17
申请号：US15138650
申请日：2016-04-26
Applicant: ROLLS-ROYCE plc
Inventor： Andrew J. DEIGHTON , Pierre-Antoine J. SIS , Peter A. EVANS
CPC classification number: F01D5/3015 , F05D2250/71
Abstract: A bladed rotor includes rotor disc having a peripheral region, and a plurality of rotor blades attached to and extending radially outwardly from peripheral region. Each rotor blade has a root portion which is located in a correspondingly shaped axially-extending slot provided in the peripheral region of rotor disc, and the root portion of each blade is axially retained in its respective slot by a plate located axially adjacent the root portion and rotor disc, and which extends circumferentially across respective slot. Retention plate is held in position by seal member having a first surface which engages radially-inwardly directed surface of rotor disc, and second surface which is located radially-outwardly of first surface and engages the retention plate. Seal member has a curved profile in radial cross-section so as to define a concavity located radially between first and second engaging surfaces and which is directed axially towards the rotor disc.
Abstract translation: 叶片转子包括具有周边区域的转子盘和附接到外围区域并从周边区域径向向外延伸的多个转子叶片。 每个转子叶片具有根部，其位于设置在转子盘的周边区域中的相应形状的轴向延伸槽中，并且每个叶片的根部通过位于轴向邻近根部的板轴向保持在其相应的狭槽中 和转子盘，并且其周向延伸穿过相应的槽。 保持板通过具有接合转子盘的径向向内的表面的第一表面的密封构件和位于第一表面的径向向外并且与保持板接合的第二表面保持就位。 密封构件具有径向横截面的弯曲轮廓，以便限定径向地位于第一和第二接合表面之间并且朝向转子盘轴向定向的凹面。
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