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    • 2. 发明授权
    • Supplemental seal for the chordal hinge seals in a gas turbine
    • 燃气轮机中的弦铰链密封的补充密封
    • US06752592B2
    • 2004-06-22
    • US10029003
    • 2001-12-28
    • Abdul-Azeez Mohammed-FakirMahmut Faruk AksitAhmad SafiSrikanth VedantamNing Fang
    • Abdul-Azeez Mohammed-FakirMahmut Faruk AksitAhmad SafiSrikanth VedantamNing Fang
    • F01D904
    • F16J15/0887F01D11/005F02C7/28
    • In a gas turbine having a chordal hinge seal between an inner rail of each nozzle segment and an annular axially facing sealing surface of a nozzle support ring, a supplemental seal is disposed between the support ring and inner bands of the nozzle segments on a lower pressure side of the chordal hinge seals. To minimize or prevent leakage flow across the chordal hinge seals, a generally U-shaped supplemental seal having reversely folded U-shaped marginal portions is received in a cavity formed in the axially extending sealing surface of the inner rail of the nozzle segment. At operating conditions, the marginal portions seal against the base of the cavity and the annular sealing surface of the nozzle support ring to prevent leakage flow past the chordal hinge seal from entering the hot gas path. To install the supplemental seal, the seal is first compressed and maintained in a compressed state by applying one or more wraps about the supplemental seal or an epoxy to secure the seal when compressed in the cavity. At operating temperatures, the retention means releases the seal to engage marginal portions against opposite sealing surfaces of the nozzle segment and support ring.
    • 在具有在每个喷嘴段的内轨道和喷嘴支撑环的环形轴向面对的密封表面之间具有弦状铰链密封件的燃气涡轮机中,在较低压力下在支撑环和喷嘴段的内带之间设置补充密封 侧面铰链密封。 为了最小化或防止跨弦铰链密封件的泄漏流动,具有反向折叠的U形边缘部分的大致U形补充密封件容纳在形成在喷嘴段的内轨道的轴向延伸的密封表面中的空腔中。 在操作条件下,边缘部分密封在空腔的底部和喷嘴支撑环的环形密封表面上,以防止通过弦状铰链密封件的泄漏流进入热气路径。 为了安装补充密封件,首先将密封件压缩并保持在压缩状态,通过在补充密封件或环氧树脂周围施加一个或多个包装件以在压缩在空腔中时固定密封件。 在操作温度下,保持装置释放密封件以将边缘部分接合在喷嘴段和支撑环的相对的密封表面上。
    • 8. 发明授权
    • Ventilated trickle seal
    • 通风涓流密封
    • US06685190B1
    • 2004-02-03
    • US09690345
    • 2000-10-17
    • Robert Russell MayerBharat Sampathkumaran BagepalliMahmut Faruk Aksit
    • Robert Russell MayerBharat Sampathkumaran BagepalliMahmut Faruk Aksit
    • F16J15447
    • F16J15/441F16J15/3288
    • A seal is provided around a shaft extending through a cavity in a hydrogen cooled generator. The seal includes a plurality of brush seal structures adapted to reduce flow to/from the cavity to a level where the risk of creating an explosive mixture of gases is minimized. In an embodiment of the invention, a series of brush seals are provided to interface with the rotary shaft so as to define a seal for minimizing the flow of hydrogen out of the cavity. In one preferred embodiment, the seal is composed of first and second brush seal assemblies, each of which is comprised of a plurality of brush seal structures. In another embodiment, spring(s) are provided to urge the brush seal structures into sealing engagement with the rotor. If deemed necessary or desirable, a vent outlet is provided in a cavity wall remote from the hydrogen atmosphere, to remove hydrogen that has leaked through the brush seals.
    • 围绕延伸穿过氢冷发电机中的空腔的轴提供密封。 密封件包括多个刷密封结构,其适于减少流入/流出空腔的流量,使得产生爆炸性气体混合物的风险最小化。 在本发明的一个实施例中,提供了一系列刷密封件以与旋转轴相接合,以便限定用于最小化氢气流出空腔的密封件。 在一个优选实施例中,密封件由第一和第二刷密封组件组成,每个刷密封组件由多个刷密封结构组成。 在另一个实施例中,提供弹簧以促使刷子密封结构与转子密封接合。 如果认为必要或期望,则在远离氢气氛的空腔壁中设置排气口,以去除已经通过刷密封泄漏的氢。