利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

5 条记录 (耗时 0.009 秒)

    Cast on-board injection nozzle with adjustable flow area
    3.
    发明授权
    Cast on-board injection nozzle with adjustable flow area 有权
    铸造板上喷嘴，流量可调

    公开(公告)号：US06183193B2

    公开(公告)日：2001-02-06

    申请号：US09315957

    申请日：1999-05-21

    申请人： David Frederick Glasspoole ,  Yvan Schraenen

    发明人： David Frederick Glasspoole ,  Yvan Schraenen

    IPC分类号： F01D514

    CPC分类号： F01D5/08 ,  F01D5/087 ,  Y02T50/676

    摘要： A Tangential On-Board Injection (TOBI) nozzle or a Radial On-Board Injection (ROBI) nozzle with adjustable flow area in a gas turbine engine for directing a cooling air flow into a rotor assembly of the turbine is disclosed. The TOBI or ROBI nozzle is a unitary cast structure including a plurality of tangentially angled cooling air passages, a number of the passages being cast-closed. After a flow test is conducted using the TOBI or ROBI nozzle, one or more of the cast-closed passages may be selectively machined open if the mass flow of the TOBI or ROBI nozzle does not satisfy the design point. Therefore, the structure of the TOBI or ROBI nozzle is easily fabricated using a casting process with low manufacturing costs while the optimum cooling air flow is achieved by adjusting the total flow area of the TOBI or ROBI nozzle before it is installed to the gas turbine engine. Furthermore, the TOBI or ROBI nozzle is advantageously supported in a cantilevered manner to avoid the thermal stress caused by temperature differential. The adjustable flow area feature also enables the TOBI or ROBI nozzle to be broadly used in different types of engines, the required mass flow of which are various.

    摘要翻译： 公开了一种用于将冷却空气流引导到涡轮转子组件中的燃气涡轮发动机中具有可调节流动面积的切向板载注射（TOBI）喷嘴或径向板载注射（ROBI）喷嘴。 TOBI或ROBI喷嘴是包括多个切向倾斜的冷却空气通道的单一铸造结构，多个通道被浇铸封闭。 在使用TOBI或ROBI喷嘴进行流量测试之后，如果TOBI或ROBI喷嘴的质量流量不满足设计点，则可以选择性地将一个或多个浇注封闭通道打开。 因此，使用铸造方法容易地制造TOBI或ROBI喷嘴的结构，制造成本低，而通过在将TOBI或ROBI喷嘴安装到燃气涡轮发动机之前调整TOBI或ROBI喷嘴的总流量面积来实现最佳冷却空气流量 。 此外，有利地以悬臂方式支撑TOBI或ROBI喷嘴以避免由温差引起的热应力。 可调节的流动面积特征还使得TOBI或ROBI喷嘴可广泛用于不同类型的发动机，其所需的质量流量是各种各样的。