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    • 73. 发明申请
    • Cycle gas turbine engine
    • 循环燃气涡轮发动机
    • US20030033813A1
    • 2003-02-20
    • US10206770
    • 2002-07-29
    • Richard J. FlatmanChristopher Freeman
    • F02C007/00
    • F01D17/167F01D5/146F01D9/041F02C9/22Y02T50/673
    • A variable cycle gas turbine engine (10) includes first and second compressors (18,16), combustion apparatus (20) and first and second turbines (22,24) operable to drive the first and second compressors (18,16) respectively via interconnecting shafts. The capacity of one of the turbines (24) may be varied, for example by means of guide vanes (32) which can be adjusted to reduce or increase a throat area (40) through which air leaves the guide vanes to impact the turbine. The capacity of the turbine may be increased at low engine speeds, to reduce the pressure ratio across the turbine and across the compressor (16) which it drives, thereby improving the surge margin of the compressor.
    • 可变循环燃气涡轮发动机(10)包括第一和第二压缩机(18,16),燃烧装置(20)和第一和第二涡轮机(22,24),其可操作以分别驱动第一和第二压缩机(18,16),经由 互连轴。 涡轮机(24)中的一个的容量可以例如通过导向叶片(32)而变化,导向叶片(32)可以被调节以减小或增加喉部区域(40),空气离开导叶以冲击涡轮。 涡轮机的容量可以在低发动机转速下增加,以减小跨越涡轮机和跨越其驱动的压缩机(16)的压力比,由此提高压缩机的喘振裕度。
    • 76. 发明授权
    • Actuating lever for variable stator vanes
    • 可变定子叶片的驱动杆
    • US4652208A
    • 1987-03-24
    • US740619
    • 1985-06-03
    • Robert P. Tameo
    • Robert P. Tameo
    • F01D5/14F01D17/16F04D29/36
    • F01D5/146F01D17/162F04D29/563Y10S416/50
    • According to the present invention, there is provided an actuating lever for effecting concurrent vane rotation in tandem rows of variable stator vanes in a gas turbine engine. The actuating lever is interconnected between and operates to activate one vane in each of two axially adjacent vane rows with one free end of the lever being rotatably attached to an actuation ring and the other free end being secured to one of the vane spindles. The second vane spindle is attached at an intermediate position of the lever, and a flexible link section of the lever is provided between the two spindles to accommodate differential movements in the lever experienced during movement of the actuation ring.
    • 根据本发明,提供了一种用于在燃气涡轮发动机中实现串联排列的可变定子叶片中的同时叶片旋转的致动杆。 致动杠杆在两个轴向相邻的叶片排中的每一个中相互连接并起作用,以使一个杠杆的一个自由端可旋转地附接到致动环上,而另一个自由端固定在一个叶片主轴上。 第二叶片主轴安装在杠杆的中间位置处,并且杠杆的柔性连接部分设置在两个主轴之间,以适应在致动环运动期间所经受的杆中的差动运动。
    • 77. 发明授权
    • Compressor for handling gases at velocities exceeding a sonic value
    • 用于处理超过声码的速度的压缩机
    • US3692425A
    • 1972-09-19
    • US3692425D
    • 1969-01-02
    • GEN ELECTRIC
    • ERWIN JOHN R
    • F01D5/14F04D21/00F04D29/32F04D29/58F04D29/38
    • F04D29/321F01D5/146F04D21/00F04D29/324F05D2240/302Y02T50/673Y10S415/914Y10S416/50
    • In the fan portion of a turbofan engine, rotor blades comprise a primary cambered airfoil and an auxiliary airfoil. Where air flow exceeds a sonic velocity relative to the blades, the throat section between adjacent blades positions the normal air shock wave on the auxiliary airfoil. Each auxiliary airfoil forms a nozzle in combination with the pressure surface of its adjacent primary airfoil. This minimizes energy losses normally associated with such normal shock waves riding on the suction surfaces of cambered airfoils in regions of relatively thick boundary layer air. Lateral struts projecting from the primary airfoil, and used to position the auxiliary airfoil, create oblique shock waves which weaken the normal shock wave and minimize energy losses associated with a normal shock wave''s effect of distributing boundary layer air on an airfoil surface. These features are also effective in reducing the generation of noise.
    • 在涡扇发动机的风扇部分中,转子叶片包括初级弧形翼型件和辅助翼型件。 当空气流相对于叶片超过声速时,相邻叶片之间的喉部将正常的空气冲击波定位在辅助翼型上。 每个辅助翼型件与其相邻的主翼面的压力表面组合形成喷嘴。 这最大限度地减少了在相对厚的边界层空气的区域中骑乘在弧形翼型件的吸力表面上的正常冲击波通常相关联的能量损失。 从主翼面突出并用于定位辅助翼型的横向支柱产生倾斜的冲击波,这削弱了正常的冲击波,并使与正常冲击波在翼型表面上分配边界层空气的效果相关联的能量损失最小化。 这些功能也有效减少了噪音的产生。