Abstract:
A combustor wall is provided for a turbine engine. The combustor wall includes a shell and a heat shield that is attached to the shell. The heat shield includes a rail and a cooling element connected to the rail in a cavity. The cavity extends in a vertical direction between the shell and the heat shield. The cavity fluidly couples a plurality of apertures in the shell with a plurality of apertures in the heat shield.
Abstract:
An assembly is provided for a turbine engine. This turbine engine assembly includes a combustor wall. The combustor wall includes a shell, a heat shield and an annular body. The body extends laterally between an inner surface and an outer surface. The inner surface defines an igniter aperture in the combustor wall. The outer surface is vertically between the heat shield and the shell. The shell defines a first cooling aperture through which air is directed to impinge against the outer surface.
Abstract:
A liner assembly for a combustor of a gas turbine engine according to one disclosed non-limiting embodiment of the present disclosure includes a support shell with a convex profile which faces the heat shield. A further embodiment of the foregoing embodiment of the present disclosure is where the convex profile is defined by a hyperbolic cosine function. A further embodiment of any of the foregoing embodiments of the present disclosure is where the convex profile provides an approximate 4.5 inlet-to-exit area ratio. A further embodiment of any of the foregoing embodiments, of the present disclosure wherein the convex profile provides a flow acceleration toward approximately 0.5 Mach towards an end of a convergent section.
Abstract:
A heat shield for a combustor liner includes first linear film cooling slots through the heat shield and second linear film cooling slots through the heat shield. The first linear film cooling slots are run in a row and each of the first linear film cooling slots is angled from the row in a first direction. The second linear film cooling slots also run in the row and each of the second linear film cooling slots is angled from the row in a second direction opposite the first direction. The second linear film cooling slots alternate with the first linear film cooling slots in the row. The first and second linear film cooling slots are connected to form a single, multi-cornered film cooling slot.
Abstract:
A combustion device used in gas turbine engines to produce propulsion or rotate a shaft for power generation includes an annular combustor with a system of fuel and air inlet passages and nozzles that results in a staged combustion of premixed fuel and air. The fuel and air inlets are placed at various longitudinal locations circumferentially, and can take on different configurations where all nozzles inject a fuel-air mixture or some may inject only air. The combustion device provides an optimal mixing of fuel and air, creates an environment for combustion that reduces pollutant emissions reducing the need for costly pollution control devices, enhances ignition and flame stability, reduces piloting issues, allows increased fuel flexibility, decreases the required size of the first stage nozzle guide vane (NGV), and improves vibration reduction.
Abstract:
A combustor assembly includes a combustion liner having a longitudinal axis and defining a combustion chamber, a flow sleeve housing the combustor liner, a casing housing the flow sleeve, and a plurality of impingement plates. The combustion liner and the flow sleeve are coaxially aligned and spaced apart radially forming an annular flow path within which the impingement plates are serially arranged longitudinally. Each impingement plate has a sleeve part connected to the flow sleeve, a liner part connected to the combustion liner and a central plate suspended in the annular flow path, coaxially arranged with the combustion liner, and including impingement holes. Each impingement plate defines a liner compartment and a sleeve compartment. Within the annular flow path, cooling air flows from the sleeve compartment, through the impingement holes and to the liner compartment of one impingement plate and therefrom to the sleeve compartment of a subsequent impingement plate.
Abstract:
Die Erfindung betrifft eine Rohrbrennkammer (22) für eine Gasturbine (1), mit mindestens einer Brenneranordnung (11), einer das Brennkammerinnere umschließenden Gehäusewand (24) mit einem Flammrohr (20) und einem sich an das Flammrohr stromabseitig anschließenden Übergansstück (21). Die Rohrbrennkammer weist eine hohe Lebensdauer auf, ermöglicht einen Schadstoffarmen Betrieb der Brennkammer bei besonders geringen Herstellungskosten. Hierzu ist die Gehäusewand zumindest bereichsweise als ein drei-lagiges Verbundsystem (29) ausgebildet mit einer zum Brennkammerinneren weisenden inneren Wandschicht (31), einer mittleren Wandschicht (32) und einer äußeren Wandschicht (33), welche miteinander verbunden sind und Kühlkanäle (30) umfassen, wobei in der mittleren Wandschicht je Kanal mittels Laser mindestens eine langgestreckte Aussparung (36) ausgebildet ist, welche fluidisch mit mindestens einer Öffnung (34) in der äußeren Wandschicht und mit mindestens einer weiteren Öffnung (35) in einer Wandschicht verbunden ist, wobei bei mindestens einem Kanal die Längsseiten (38) der Aussparung (36) einstückig mit der mittleren Wandschicht ausgebildete Rippen (42) umfassen.