F - Mech Eng,Light,Heat,Weapons – 23 – R
Patent
F - Mech Eng,Light,Heat,Weapons
23
R
F23R 3/00 (2006.01) F23D 23/00 (2006.01) F23R 3/14 (2006.01)
Patent
CA 2259414
A multi-swirl combustor plate (100) is disclosed. The multi-swirl combustor plate contains a plurality of swirlers (104) arranged around an interior section of the combustor plate, and a plurality of non-swirled holes (106) arranged around an exterior section of the plate (102) that had been cast as a solid section. The swirlers are preferably arranged in concentric circles, and the non-swirled holes are also preferably created in concentric circles disposed outside of the swirlers. In accordance with the present invention, each of the swirlers also preferably comprises an outer wall (210) having a thickness greater than that of the multi-swirl plate and is an extension of the multi-swirl plate disposed in the downstream direction. Similarly, the swirler hub (212) also has a thickness greater than that of the plate and is an extension disposed in the downstream direction. Methods of making a swirler plate are also disclosed that include the step of first casting a plate comprising a center section having a number of swirlers and a solid outer section. The solid outer section is then subsequently machined to create a plurality of non-swirled holes. Preferably, two concentric rings of swirlers are cast and/or concentric rings of non-swirled holes are created. The present invention thus permits the patterns of swirlers and non-swirled holes to be varied depending upon the demands of a particular turbine.
L'invention concerne une plaque (100) de chambre de combustion à plusieurs trous de turbulence, la pluralité de trous à turbulence (104) étant disposée sur une portion circulaire intérieure de la plaque, et une pluralité de trous sans turbulence (106) étant agemcée sur une portion circulaire extérieure de la plaque (102) fondue pour former une partie solide. De préférence, les premiers trous sont disposés en cercles concentriques, et les autres trous sans turbulence aussi, dans des cercles extérieurs aux premiers trous. Chacun des premiers trous a de préférence une paroi externe (210) plus épaisse que la plaque et constitue un prolongement de ladite plaque dans la direction aval. De même, le moyeu (212) des trous à turbulence est plus épais que la plaque et constitue un prolongement de ladite plaque dans la direction aval. On décrit des procédés de fabrication pour ce type de plaque selon les étapes suivantes: coulage d'une plaque comprenant un centre présentant un certain nombre de trous de turbulence et d'une partie extérieure solide; et usinage de la partie extérieure pour percer une pluralité de trous sans turbulence. De préférence, on coule deux anneaux concentriques des premiers trous et/ou des anneaux concentriques des seconds. Il est donc possible d'adapter les configurations des premiers et des seconds trous aux exigences d'une turbine déterminée.
Fetherstonhaugh & Co.
Westinghouse Electric Corporation
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