摘要:
A fuel injector (60) for a combustor presented either as a simplex or duplex pressurized fuel injector, wherein the fuel is introduced into the injector to provide a swirl to the fuel in a first annular channel (68) which communicates with a coaxial conical fuel swirl chamber (70) and then the primary nozzle. In a duplex version, a secondary annular swirl channel (76) is provided for spinning the fuel and communicating downstream with a conical fuel swirl chamber (82) and eventually an annular nozzle (84) whereby the fuel is atomized as it exits the nozzle. An air swirler (66) is also provided with the fuel injector (60), and the air swirler (66) includes air passages (90) arranged in an annular array about the fuel injector tip (64). A second array of auxiliary air passages (92) can be arranged spaced radially from the first array (90) and also to provide an air swirl and to control the spray cone of the fuel air mixture.
摘要:
Thermal stress relief in a nozzle head of a gas turbine fuel nozzle is provided by forming a slit through each selected air passages of the nozzle head. The strategic location of stress-relief slits contributes to extend the fatigue life of the nozzle with minimal cost and impact on the nozzle aerodynamics.
摘要:
A combustor for gas turbine, wherein a nozzle cap (10) is disposed on the downstream side of a nozzle body (1) of the combustor and its inner surface part (12) is formed in a conical shape gradually larger in diameter toward the downstream side so as to form a fuel jet guide (17) which guides the fuel jet injected from an injection hole (3) provided in the nozzle body at the center part of a downstream side end surface (2) and the fuel injected from the injection hole advances along the jet guide, mixes into a swirl flow (S) in a swirl flow path (9) smoothly without stagnation and burns, thus preventing smoke from producing, and the air introduced, on the upstream side, into a first auxiliary air path (6) between the nozzle body and a partition (5) passes a second auxiliary air path (16) formed between the downstream side end surface (2) of the nozzle body (1) and the upstream side end surface (13) of the nozzle cap, reaches an inlet (19) of the fuel jet guide, and then flows along the fuel jet guide, whereby the nozzle cap is cooled and the fuel injected from the injection hole is prevented from depositing on the nozzle cap.
摘要:
A prefilmer (26) for a fuel injection arrangement (10) comprising a body (50) having a fluid flow surface (80, 81, 82, 83) and a downstream edge (44), the prefilmer (26) arranged so that when working in operative association with the fuel injection arrangement (10) fuel flows over the surface (80, 81, 82, 83), by means of a passing airflow, to the downstream edge (44), from where the fuel is shed, characterised in that the prefilmer (26) further comprises a fluid flow mixing means (34) to, in use, enhance the mixing of fuel and air.
摘要:
Die Erfindung bezieht sich auf eine Kraftstoffeinspritzdüse für eine Gasturbinenbrennkammer, mit einem Filmleger 1, in dem mehrere Kraftstofföffnungen 2 ausgebildet sind. Die Erfindung zeichnet sich dadurch aus, dass die Mittelachsen 5 der Kraftstofföffnungen 2 durch den Filmleger 1 bezüglich ihrer radialen Ausrichtung im Wesentlichen parallel zur Hauptströmungsrichtung 6 der Luft angeordnet sind.
摘要:
A spray nozzle is disclosed which includes an elongated nozzle body having an axially extending interior chamber and at least two radially extending air inlet ports communicating with the interior chamber. An elongated fluid inlet fitting having an axial fluid inlet passage is axially disposed within the interior chamber of the nozzle body. A fluid distribution (22) insert is axially disposed within the axial fluid inlet passage of the fluid inlet fitting. The fluid distribution insert (26) has an axial impact chamber (24) formed therein, and an axial fluid feeding orifice (25) which communicates with the axial impact chamber (24). An air swirling insert (26) is disposed within the nozzle body. The air swirling insert (26) has an interior bore for receiving the fluid distribution (22) insert, and a fluid mixing orifice communicating with the fluid feeding orifice of the fluid distribution insert. A fluid metering insert (24) is axially disposed within the impact chamber (24) of the fluid distribution insert (22). The fluid metering insert (32) has a metering orifice (34) providing fluid communication between the impact chamber (24) of the fluid distribution insert (22) and the axial fluid inlet passage of the fluid inlet fitting. The metering orifice (34) is offset from the axis of the fluid feeding orifice (25), and has a smaller diameter than the fluid feeding orifice (25).
摘要:
The present application relates in general to an apparatus and to methods for testing the performance of an automotive catalytic converter under conditions simulating those which occur in motor vehicles over extended driving conditions. The application provides a novel swirl plate and a novel fuel injector which enable the burner to run stoichiometric for extended periods of time.
摘要:
A prefilmer (26) for a fuel injection arrangement (10) comprising a body (50) having a fluid flow surface (80, 81, 82, 83) and a downstream edge (44), the prefilmer (26) arranged so that when working in operative association with the fuel injection arrangement (10) fuel flows over the surface (80, 81, 82, 83), by means of a passing airflow, to the downstream edge (44), from where the fuel is shed, characterised in that the prefilmer (26) further comprises a fluid flow mixing means (34) to, in use, enhance the mixing of fuel and air.
摘要:
Eine Zerstäuberdüse für einen Brenner, insbesondere für ein an einem Fahrzeug eingesetzes Heizgerät, umfasst ein eine Strömungsführungsoberfläche (40) bereitstellendes erstes Strömungsführungselement (34), das in einem axialen Endbereich bezüglich einer Düsenmittenachse (A) eine Zerstäuberlippe (48) aufweist, ein zusammen mit dem ersten Strömungsführungselement (34) einen zur Zerstäuberlippe (48) führenden ersten Strömungsraumbereich (30) begrenzendes zweites Strömungsführungselement (36) sowie eine Brennstoffzuführanordnung (54) in dem zweiten Strömungsführungselement (36) zum Aufbringen von Brennstoff durch den ersten Strömungsraumbereich (30) hindurch auf die Strömungsführungsoberfläche (40) des ersten Strömungsführungselements (34). Dabei ist vorgesehen, dass die Brennstoffzuführanordnung (54) wenigstens einen Brennstoffzuführkanalabschnitt (58) in dem zweiten Strömungsführungselement (36) aufweist, welcher Brennstoffzuführkanalabschnitt (58) zu einem Oberflächenbereich (44; 44') des zweiten Strömungsführungselements (36) offen ist, der eine von Null verschiedene Flächennormalen-Radialkomponente aufweist.