337 results about "Afterburner" patented technology

A plasma ashing apparatus for removing organic matter from a substrate including a low k dielectric, comprising a first gas source; a plasma generating component in fluid communication with the first gas source; a process chamber in fluid communication with the plasma generating component; an exhaust conduit in fluid communication with the process chamber; wherein the exhaust conduit comprises an inlet for a second gas source and an afterburner assembly coupled to the exhaust conduit, wherein the inlet is disposed intermediate to the process chamber and an afterburner assembly, and wherein the afterburner assembly comprises means for generating a plasma within the exhaust conduit with or without introduction of a gas from the second gas source; and an optical emission spectroscopy device coupled to the exhaust conduit comprising collection optics focused within a plasma discharge region of the afterburner assembly. An endpoint detection process for an oxygen free and nitrogen free plasma process comprises monitoring an optical emission signal of an afterburner excited species in an exhaust conduit of the plasma asher apparatus. The process and apparatus can be used with carbon and/or hydrogen containing low k dielectric materials.

An afterburner apparatus that utilizes a novel swirl generator for rapidly and efficiently atomizing, vaporizing, as necessary, and mixing a fuel into an oxidant. The swirl generator converts an oxidant flow into a turbulent, three-dimensional flowfield into which the fuel is introduced. The swirl generator effects a toroidal outer recirculation zone and a central recirculation zone, which is positioned within the outer recirculation zone. These recirculation zones are configured in a backward-flowing manner that carries heat and combustion byproducts upstream where they are employed to continuously ignite a combustible fuel/oxidizer mixture in adjacent shear layers. The recirculation zones accelerate flame propagation to allow afterburning to be completed in a relatively short length. Inherent with this swirl afterburner concept are design compactness, light weight, lower cost, smooth and efficient combustion, high thrust output, wide flammability limits, continuous operation at stoichiometric fuel/oxidizer mixture ratios, no combustion instabilities, and relatively low pressure losses.

A hydrogen fueled powerplant including an internal combustion engine that drives a motor-generator, and has a two-stage turbocharger, for an aircraft. A control system controls the operation of the motor-generator to maintain the engine at a speed selected based on controlling the engine equivalence ratio. The control system controls an afterburner, an intercooler and an aftercooler to maximize powerplant efficiency. The afterburner also adds power to the turbochargers during high-altitude restarts. The turbochargers also include motor-generators that extract excess power from the exhaust.

A single-stage hypersonic vehicle is comprised of a low-speed and a high-speed propulsion system. The low-speed propulsion system propels the single-stage vehicle to a threshold velocity, after which the high-speed propulsion system then takes over. The low-speed propulsion system includes a combined-cycle engine featuring a swirl generator that is integrated into a turbojet engine to provide a compact turbojet and swirl afterburner-ramjet propulsion system. The high-speed propulsion system includes a hypersonic engine that is operable at the threshold takeover velocity and beyond. In various embodiments, the high-speed propulsion system comprises a scramjet, rocket, or scramjet/rocket engine depending requirements. Benefits of the swirl generator design include its ability to rapidly and efficiently atomize, vaporize, mix and burn the fuel and oxidizer for the low speed propulsion system, significantly reduce length, weight, cooling requirements and complexity for both propulsion systems, while maintaining high propulsion performance and reducing propulsion and launch costs.

A trapped vortex cavity afterburner includes one or more trapped vortex cavity stages for injecting a fuel/air mixture into a combustion zone. The trapped vortex cavity afterburner is operable to provide all thrust augmenting fuel used for engine thrust augmentation. Each stage has at least one annular trapped vortex cavity. The trapped vortex cavity afterburner may be a multi-stage afterburner having two or more trapped vortex cavity stages ganged for simultaneous ignition or operable for sequential ignition. One embodiment of the annular trapped vortex cavity is operable to raise a temperature of an exhaust gas flow through the afterburner about 100 to 200 degrees Fahrenheit. Each of the trapped vortex cavity stages may be operable to produce a single or a different amount of temperature rise of the exhaust gas flow through the afterburner. A chevron shaped trapped vortex cavity and having zig-zag shaped leading and trailing edges may be used.

The invention provides a flame stabilizing device and method of an afterburner for a gas turbine engine. In the device, the original turbine rear frame supporting plate is replaced with the supporting plate with the cavities; and the device is characterized in that: the section of the supporting plate is in the shape of a wing with a suddenly expanded trailing edge and is provided with the cavities. The aim of stabilizing flame is fulfilled through a low-speed backflow region formed by flowing gas flow through the cavities of the supporting plate and the suddenly expanded part of the trailing edge. The invention provides the turbine rear frame supporting plate (2) of the afterburner for the gas turbine engine; the afterburner comprises a case (12), a turbine rear frame inner wall (1) and a plurality of turbine rear frame supporting plates (2), wherein the turbine rear frame supporting plates (2) are connected with the case (12) and the turbine rear frame inner wall (1); and the turbine rear frame supporting plate (2) is characterized by being provided with the cavities (9).

The present invention is a retractable afterburner shroud for use upon a jet engine. The retractable shroud conforms to an outer surface of a jet engine. The afterburner shroud is affixed by a plurality of moveable support arms. The afterburner shroud is retractable. During operation of the afterburner shroud, the afterburner shroud is extended rearward toward the exhaust of the jet engine. A storage tank provides liquid oxygen through the support arms to a mixing ring located within the afterburner shroud. The mixing ring mixes the liquid oxygen and fuel to form a combustible mixture. The combustible mixture is injected into the exhaust wherein the mixture is ignited. The ignited mixture provides additional thrust for the jet engine.

An engine/steam generator which converts hydrogen peroxide to superheated steam and oxygen and having an afterburner that together with a reducing agent, utilizes the oxygen, thereby supplying oxygen free super-heated steam under pressure for oil well stimulation. Fluids such as water and KH30 can be injected into the engine/stem generator. The invention also relates to an apparatus and methods of incineration, soil remediation, land fill remediation, controlled vault burning, chemical atomization/vaporization, home heating, generation of electricity, diesel engine exhaust cleaning, steam turbine, gas path cleaner for jet engines, steam cleaning, natural gas engine power booster emission reducer, chemical storage tank cleaning, portable gas drive, and metal tempering.

An afterburner includes an exhaust duct with a fixed area outer nozzle at an aft end thereof, and an ablative inner nozzle therein. The smaller inner nozzle is consumed during reheat operation to expose the larger outer nozzle for increased propulsion thrust.

A device for gasifying biomass sludge having particle size less than 1 cm, and 20% to 100% solids content has a primary chamber, a fume transfer vent, a mixing chamber which accepts fumes from the primary chamber, and an afterburner chamber in fluid communication with the mixing chamber. A secondary burner produces an initial heating flame within a vertical portion of the afterburner chamber. A heat transfer chamber is in fluid communication with the afterburner chamber. Heated gases from the afterburner chamber cause heating of the heat transfer chamber. The primary chamber has a heat conductive floor superimposed over the heat transfer chamber so that conductive and convective heating of the primary chamber occur. At least one primary auger is located crosswise in the primary chamber between a sludge feed hopper and an ash hopper. The heat transfer chamber underlies the primary auger near the end at the ash hopper.

The invention discloses a geometrical variable flame stabilizing device and belongs to the technical field of afterburner flame stabilization of aircraft engines. The geometrical variable flame stabilizing device disclosed by the invention utilizes a V-shape as a basic bluff body structure and consists of a main body part and a transmission power part, wherein the main body part is vertically installed in an afterburner cartridge receiver, the afterburner cartridge receiver comprises a front streamline head part, a blade A with a rotating shaft A, a blade B with a rotating shaft B, a rotating shaft supporting plate and a mounting seat, and the two ends of the streamline head part are fixedly connected between the mounting seat and the rotating shaft supporting plate. The geometrical shape of the flame stabilizing device provided by the invention can be changed to effectively reduce the flow resistance of the flame stabilizing device if necessary, or the flow resistance is increased within a short time to improve the ignition success rate, or the geometrical shape of the flame stabilizing device is adjusted to consistently keep the flame stabilizing device at the optimal combination point of the flame stabilization and flow resistance loss so as to obtain the maximal thrust performance of the afterburner.

The invention provides an air-cooling shielding integrated afterburner. The air-cooling shielding integrated afterburner comprises a diffuser casing; the inner cone is arranged in the diffuser casing; a plurality of hollow flow guide supporting plates are installed on the inner cone and connected to the diffuser casing through pull rods, flame stabilizers are arranged at the rear ends of the flow guide supporting plates, the flow guide supporting plates extend in the axis direction of the engine in a bent and twisted mode, and the he front end and the rear end of the flow guide supporting plate are deflected by a preset angle in the circumferential direction, so that a shielding structure is formed; an oil injection rod extending into the flow guide support plates communicates with the oil injection rod outside the diffuser casing through an annular fuel oil main pipe; a confluence ring is installed on the flow guide supporting plates and divides a flow channel between the diffuser casing and the inner cone into a fuel gas flow channel and a cold gas flow channel, fuel gas flows into the fuel gas flow channel and is mixed with fuel oil flowing out of the oil injection rod for combustion, one part of cold gas flows into the cold gas flow channel, and the other part of the cold gas flows into the flow guide supporting plates from a communicating hole formed in the confluence ring; a cooling flow path is formed.

The invention provides an integrated afterburner provided with a deflected rectification support plate. The integrated afterburner provided with the deflected rectification support plate can effectively enlarge a backflow area, prolong the staying time of a gas mixture and improve the combustion efficiency. Gas flows from an inner duct and an outer duct are mixed between rectification support plate flame stabilizers through sliding baffle type back duct ejectors. Blades of the rectification support plate flame stabilizers are periodically and evenly arranged, and each blade and the axial direction form a certain included angle. Fuel oil enters a fuel oil channel inside the rectification support plate flame stabilizers through an oil supply channel. The fuel oil is sprayed out through direct-injection type spray nozzle small holes on the two sides and mixed with the gas mixture of the inner duct and the outer duct, and then the fuel oil is combusted behind the rectification support plate flame stabilizers. Under the action of the rectification support flame stabilizers, the backflow area is enlarged, the staying time of oil and gas is prolonged, the oil and the gas are more evenly mixed, combustion is more complete, and then the combustion efficiency is effectively improved.

An electromagnetic conticasting apparatus for casting composite rolling roller is composed of dual-electromagnetic crystallizer cooled by water, induction afterburner, electromagnetic stirrer, preheating induction furnace, and vibrating system. Its casting method includes such steps as prefabricating roller core, locating in preheating induction furnace, preheating, arranging it at lower end of said crystallizer, installing filling bath, turning on said induction afterburner filling the molten metal for working layer from filling bath in the crystallizer, turning on secondary cooling system, vibrating system, electromagnetic stirrer and billet puller, continuously pulling out billet and spraying water for cooling.

A device for gasifying biomass waste has two each of primary chambers, fume transfer vents, mixing chambers which accept fumes from the primary chamber, afterburner chambers in fluid communication with the mixing chambers, and an exhaust duct. Each secondary burner produces an initial heating flame within a vertical portion of the respective afterburner chamber, and secondary chambers are in fluid communication with the afterburner chambers. Heated gases from the afterburner chambers cause heating of the secondary chambers. A portion of each primary chamber has a heat conductive floor superimposed over the respective secondary chamber, and the partition between the primary chambers is heat conductive, so that conductive and convective heating of the primary chambers occurs.