Abstract: A low heat loss combustion chamber for a gain generator assembly is shown. The gain generator assembly operates in a cylindrical gas laser. The combustion chamber includes a plurality of primary rings having fuel and oxidizer injectors therein as well as primary nozzles. End caps attached to the primary rings contain reaction products so that they flow through the primary nozzles on the primary rings past a secondary injector array into a lasing cavity of the gas laser.

Abstract: A system for burning a liquefied gas comprises a burner gun for spraying the liquefied gas into a combustion space, a pump for feeding the gas under pressure, pipe means connecting the burner gun with the pump, and a flow regulating valve provided in the pipe means, wherein the portion of the pipe means downstream from the valve has its inner diameter so determined in relation with the flow rate of the gas that the state of the gas flow through said portion falls within fog flow zone or bubble flow zone on Baker's two-phase flow diagram.In the system of the invention, unstable combustion of the liquefied gas due to vapor lock in the pipe means can be prevented even when the gas supply pressure is below the vapor pressure of the gas. Besides, the calorific value obtained with the system is variable over a wider range than with a conventional system. Thus the system has a remarkable industrial value.

Abstract: A no-drip valve apparatus for regulating a fluid flow from an inlet to an outlet. A pressure activated supply valve means controls the flow of fluid through the valve. A partition member cooperates with a vacuum chamber to retract and retain any remaining oil in the valve or the oulet nozzle when the pressure activated supply valve means cuts off the flow of oil through the valve. The partition member is resiliently displaced by pressure fluid from a supply chamber adjacent the inlet and is displaced in one direction prior to flow of fluid to the outlet and is displaced in the other direction upon termination of the flow of fluid through the outlet.

Abstract: A gas conditioning means for a plurality of boilers and more particularly an improved means for providing a conditioning mixture of sulfur trioxide (SO.sub.3), from a single system, for injection into the flue gas streams of a plurality of boilers for the conditioning thereof.

Abstract: A valve for incorporation in a fuel line, between a pump and a fuel burner, has a valve chamber and a valve member in the chamber. The valve member normally closes a connection from the pump to the burner, but opens this connection in response to a suitably raised pump discharge pressure. Means are provided whereby, upon the shutting off of such pump discharge pressure, the valve, by magnetic action not only closes but momentarily causes fuel to be drawn from the line to the burner, to prevent fuel from dripping out of the burner and from thereby causing smell, spillage or clogging of the burner.

Abstract: A safety device for an oil burner includes a pump which has a drive cylinder portion with a double-acting piston movable therein which is connected through a connecting rod to a suction piston portion which is movable in a suction portion of the pump cylinder. The oil burner is supplied with fuel oil from a supply line having a shutoff valve or valves which are connected through a suction line to the suction part of the piston. The suction portion is connected through a check valve to a return line and the drive cylinder is connected on respective opposite sides of the piston through valve means for regulating the movement of the drive piston so that it moves after the burner is turned off to displace the suction piston to effect a suction on the supply line to the oil lance of the burner so as to withdraw the oil therefrom.

Abstract: A process is provided for cleaning residue fuel varnish and carbon from the fuel nozzles and guide vanes of a jet engine. The process involves dispensing a detergent and water solution under sufficient pressure through the fuel nozzles themselves to scrub residue fuel varnish and carbon from the fuel nozzles and from the guide vanes of a jet engine of an aircraft; without the need for removing the engine from the aircraft, or for removing the nozzles from the engine. The process serves to wet down the surfaces of the fuel nozzles and guide vanes with a detergent solution for a period of time (that is about 20 minutes), and then to scour the surfaces with a pulsating detergent spray, and finally to purge and dry the surfaces with a pressurized air stream.

Abstract: An improved permix gas burner design suitable for use in a metal melting furnace which has a long service life, a low degree of maintenance, is easily cleared in case of burner blockage, allows inspection of the combustion chamber or furnace interior and still maintains the desired turndown capabilities of premix gas burners. These results are achieved by providing visual and/or physical access to the interior of the burner through a novel access tunnel and by providing a dual composition refractory combustion chamber.

Abstract: A steam and fuel oil control and purge valve has a body which defines generally radial steam and oil inlet and discharge ports, in top-to-bottom order coaxial generally cylindrical steam discharge and inlet chambers and oil discharge and inlet chambers, and three coaxial smaller cylindrical openings in top-to-bottom order respectively between the steam discharge and inlet chamber, the steam inlet and oil discharge chamber, and the oil discharge and inlet chambers. A cylindrical steam valve and actuator is slidable in the opening between the steam inlet and oil discharge chambers and has axially spaced upper and lower radial openings and an internal interconnecting axial passageway. In its closed position, a seating surface at an upper end of the valve and actuator closes the upper cylindrical opening between the steam discharge and inlet chambers and the lower radial opening in the valve and actuator is closed by the wall of the intermediate cylindrical opening in the valve body.

Abstract: An ignition system for flares is described particularly suitable for use in remote areas with limited facilities and which includes as components a power source and specifically storage batteries with a solar battery for recharging and having an associated gasoline engine driven blower for supplying air for ignition, together with an ignition panel adapted for ready connection to a source of fuel gas, to the blower, to the power source, to the stack pilot, to the pilot ignitor and if desired to the flare header for purge gas supply. The panel preferably includes a manually oprable push button for an ignition spark plug, has indicators of pilot operation and has manual control of the delivery of fuel gas for ignition, for use as pilot gas and for use as purge gas. A thermocouple is provided at the pilot for control of indicating lamps indicative of pilot operation or non-operation as well as purge failure.

Abstract: A laser combustor apparatus for a chemical laser including an injector and transition manifold wherein the injector has a barrier area located between the oxidizer plenum and fuel plenum and a coolant area is located between the fuel plenum and a porous injector face plate, said barrier area and coolant area being connected by a restricted passage to control the pressure in the barrier area maintaining it higher than that in the oxidizer or fuel plenum. The combustor and manifold form a T-shape and have a liner fixed therein with a spaced relationship into which a diluent is placed for a purge thereof to keep combustion products from getting behind the liner.

Abstract: Apparatus for the injection of fuel into a gas turbine which is adapted to remove the fuel from the injectors when the turbine is to be stopped. Each injector provides separate, parallel fuel flow paths from a pair of fuel inlet connections toward a plurality of atomizing apertures. When the turbine is to be stopped, one of the inlet connections is connected to a source of compressed air and the other is connected to a sump for the fuel.

Abstract: Fuel gas produced e.g. in a fluid bed gasifier and which comprises deposit-forming materials such as heavy hydrocarbons (e.g. tars) and non-combustible fines is passed via conduits and solid-removing cyclones to a burner for admixture with air and subsequent combustion. Deposits formed in the conduits cyclones and burner are removed by closing off the burner outlet and air inlet, and passing a deposit-removing reactant (e.g. air) into the conduit to oxidize and thereby remove deposits, particularly from the cyclones. Preferably, there are at least two burners for the fuel gas, and they are closed off alternately to remove deposits from their respective conduits and cyclones.

Abstract: Simultaneous ignition of a multi-burner compact steam generator is accomplished through use of a pilot flame that is established in each of the individual burner elements. A hot gas ignition source is generated in a preburner plenum chamber by sparking a fuel/oxidizer mixture. A combustion wave resulting from gases generated within the plenum is distributed to each of the individual main burners through a multiplicity of conduits to ignite a pilot fuel source which is independently fed into each of the burner elements thus providing a pilot flame for subsequent main stage ignition.

Abstract: A coke oven decarborizing air regulating assembly comprising a manifold pipe extending along each side of a battery of coke ovens for feeding gas to a plurality of separate pipes leading to burners in the ovens, each of which pipes includes an air regulating assembly comprising a cylindrical pipe section with a plurality of holes cooperating with the edge of a relatively slidable cylindrical sleeve having an end plate or "cookie" with a handle for slidably moving the sleeve longitudinally to quickly regulate the amount of air introduced into the oven. The handle also serves as a stop element to prevent abnormal insertion of the sleeve into the pipe -- also it may predetermine the normal opening of the air admitting holes.

Abstract: A valve for incorporation in a fuel line, between a pump and a fuel burner, has a valve chamber and a valve member in the chamber. The valve member normally closes a connection from the pump to the burner, but opens this connection in response to a suitably raised pump discharge pressure. Means are provided whereby, upon the shutting off of such pump discharge pressure, the valve not only closes but momentarily causes fuel to be drawn from the line to the burner, to prevent fuel from dripping out of the burner and from thereby causing smell, spillage or clogging of the burner.

Abstract: Waste liquor obtained when pulping wood can be advantageously burned and used for raising steam, while simultaneously chemicals are reclaimed. Certain waste liquors have a noted tendency to cause deposits in valves and piping, which therefore must be intermittently washed by a neutral fluid. This means an interruption of the supply of fuel to the burner, and even if a furnace usually is provided with several burners the interruption causes a disturbance of the steam production, beside necessitating a considerable amount of labor.The invention proposes a means for supplying liquid fuel and washing fluid simultaneously to each burner by two parallel conduits in such a manner that a simple switch-over will result in the (occasional past) supply conduit and the major part of the burner will be washed, while liquid fuel is supplied through a conduit having recently been washed.