Abstract: The disclosure relates to a method for operating a gas turbine plant which is supplied with a fuel gas via a compressor station. The compressor station includes a compressor which compresses the fuel gas which is fed via a gas feed line and delivers it via at least one control valve to a combustion chamber of the gas turbine plant. A bypass system is arranged in parallel to the compressor via which fuel gas can be directed in a switchable manner past the compressor to the at least one control valve. An energy-saving operation can be achieved in a simple manner by continuously measuring the fuel gas pressure at the outlet of the at least one control valve. A minimum fuel gas pressure, which is desired (e.g., necessary) for operation of the gas turbine, at the inlet of the at least one control valve is determined from the measured pressure values in each case.

Abstract: A micro pilot for a gas hot water heater is provided. The micro pilot provides a flame that is substantially smaller than a typical pilot in a hot water heater during standby operation of the burner. Just prior to allowing gas to flow to the burner upon a call for heat, a pilot flame of sufficient size to ensure ignition of the burner is provided. In one embodiment this larger pilot flame is produced by providing an additional amount of bleed gas to the pilot to increase flame size. In another embodiment, bleed gas is provided to a separate booster pilot, which is ignited by the micro pilot. The flame from the booster pilot is then used to ignite the main burner. This design allows for the micro pilot to be positioned closer to the flame trap of a flammable vapor resistant hot water heater to ensure smooth ignition of any such vapor.

Abstract: A cooking appliance equipped with at least one regulating valve having a rotary regulator organ. The rotary regulator organ has an actuating shaft a plurality of peripheral openings adapted for regulating a flow of gas through the regulating valve. In a first angular position the rotary regulator organ is adapted to supply a constant flow Qmin of a first type of fuel through a first peripheral opening. In a second angular position, successive to the first angular position, the rotary regulator organ is adapted to supply a constant flow Qmin of a second type of fuel through a second peripheral opening. In one implementation a feature that rotates with the actuating shaft is adapted to engage a feature on the cooking appliance to limit the rotation of the rotary regulator organ to the first angular position.

Abstract: A burner system and method of operating a burner for reduced NOx emissions. The burner system comprises a flame stabilizer, at least one fuel staging lance, an actuated valve, a temperature sensor and a controller. The amount of fuel to the flame stabilizer relative to the amount of fuel to the fuel staging lances is controlled depending on furnace temperature and/or furnace production rate.

Abstract: The invention provides a control apparatus comprising a controller for determining a manipulated variable for manipulating a controlled object so that an output of the controlled object converges to a desired value and a modulator for modulating the manipulated variable by using one of a delta-sigma modulation algorithm, a sigma-delta modulation algorithm and a delta modulation algorithm to generate a modulated signal to be applied to the controlled object. The modulator generates the modulated signal so that a center value of an amplitude of the modulated signal follows a change of the manipulated variable. Thus, the modulated signal in which the manipulated variable is reflected without any loss can be generated even when the manipulated variable changes.

Abstract: A catalyst combustor (11) includes an inner catalyst combustion portion (20) connected to a substitute fuel supply line (LS21, 12, 16) and a substitute oxidizer supply line (LS22, 13), an outer catalyst combustion portion (40) connected to an effluent fuel supply line (LS23, 14) and an effluent oxidizer supply line (LS24, 15), and a fluid communication portion (60) connecting the inner catalyst combustion portion (20) and the outer catalyst combustion portion (40) to each other, and has a fixed relationship provided among a fluid resistance (R2) of the inner catalyst combustion portion (20), a fluid resistance (R4) of the outer catalyst combustion portion (40), and a fluid resistance (R6) of the fluid communication portion (60), whereby substantially a warming catalyst combustion is caused to occur simply in the inner catalyst combustion portion (20), and a regular catalyst combustion is caused to occur in the inner catalyst combustion portion (20) and the outer catalyst combustion portion (40).

Abstract: A gas burner operating system includes a control unit installed in the body of a gas burner and connected to an electronic igniter in the body of the gas burner, the operating unit using a cock, a pressure differential device, a medium flowrate control valve and a low flowrate control valve to control the operation of the gas burner and the intensity of the burner flame, and an operating unit provided outside the body of the gas burner for enabling the user to control the operation of the control unit and the electronic igniter of the gas burner at a remote place away from the gas burner.

Abstract: A gas burner includes a gas valve block having a gas input control part connected to a fuel gas source and a gas output control part connected to a flame tube and gas nozzle for producing an igniting flame for burning fuel gas outputted through the flame tube, a differential pressure device adapted to control the fuel gas passage between the gas input control part and the gas output control part through a normal-close valve and a normal-open valve, an electronic igniter controlled by a cock in the gas valve block through a micro-switch to discharge sparks through discharging electrode means for burning fuel gas outputted through the gas nozzle, and a temperature switch for controlling the operation of the normal-open valve and the electronic igniter subject to a predetermined temperature range.

Abstract: Automatic reset for an unattended gas furnace has an induced draft blower motor energized by an electrical power source and with a first, normally "open", relay switch in circuit to control the operation of the blower motor. A burner control circuit, energized by a transformer coupled portion of the power source, has a room thermostatic switch, a second, normally "open", relay switch in series with the thermostatic switch and an air-flow switch operated by airflow in the furnace to connect the control circuit to the second power source when the blower is "on" and the thermostat is "closed", calling for heat. The second switch is connected to the control electrode of an electronic switching element to energize selectively a relay controller which, when energized, closes both the first and second relay switches to energize the blower motor and burner control circuit.

Abstract: An apparatus for dispensing active material. The apparatus oscillating burner, a tank for the active material which is connected to a discharge line, and a fuel reservoir which, via a suction line, feeds the oscillating burner, which operates with pulsating combustion and comprises an oscillating tube. If the pressure drops in the oscillating burner, it is possible to introduce additional fuel thereinto with the aid of a control device as a function of the pulsation pressure of the oscillating burner. The control device causes extra fuel to be supplied to ensure that the resonance range, which has originally been set to no-load, is restored, any pressure loss caused by the feeding of active material being compensated for so as not to affect the resonance behavior of the apparatus, and consequently the quality of the dispensed active material.

Abstract: An ignition and fuel supply system for gas-fueled heat radiators of the type comprising an upstream fuel feed (6), a safety valve (20) in the vicinity of the radiator, a pilot device (27) mounted on the radiator to allow reignition and a feed conduit (4) for the gas; the system includes a bypass (15) equipped with gas-expanding devices (14) providing a pressure less than the pressures in the heating areas, whereby the pilot flame device (27) may be fed from the same conduit (4) used for the heating areas; a selection valve (24) is arranged in the radiator injection conduit in order to be closed at the pressure of the pilot flame; an ignition branch line (16) is arranged as a shunt of the upstream feed means (6) in order to supply gas at a pressure exceeding the pressures of the heating modes at the time an electrical igniter (19) is actuated to assure electrical ignition of the radiator.

Abstract: Safety device for igniting fuel gas discharged by the orifice of a flare stack, incorporating a pilot light whose nozzle issues into the vicinity of the orifice of the flare, said pilot light which is equipped with an ignition device is connected by a supply pipe to an auxiliary fuel gas source, said supply pipe being provided with a valve having an opening position and a closing position which are controlled by a mechanism connected by a first servo-system to the detector detecting the admission of the gas to be burned into the flare stack such that the detection of a flow of gas into said stack controls the opening position of the valve and the detection of the stoppage of this flow controls the closing position of the valve, wherein the ignition means of the pilot light comprises a refractory body located in the extension of the nozzle of the pilot light, said solid body being provided with heating means for raising it and maintaining it at a temperature of at least 800.degree. C.

Abstract: An improved apparatus for the combustion of hydrocarbon vapors comprising a stack; a first vapor directing assembly, a portion of which is disposed within the stack for discharging vapors below or at a first predetermined flow rate into a combustion zone at one end of the stack; a first switching valve in fluid communication with the first vapor directing assembly for directing the flow of vapors through the first vapor directing assembly; a second vapor directing assembly in fluid communication with the first vapor directing assembly, a portion of the second vapor directing assembly extending through the stack for discharging vapors above the first flow rate but below a second predetermined flow rate into the combustion zone; and a second switching valve in fluid communication with the second vapor directing assembly for directing the flow of vapors through the second vapor conducting assembly.

Abstract: A conduit for feeding a combustible waste gas to a ground flare is divided into a plurality of branch pipes each connected to burners of the ground flare. A stop valve is mounted on each of the branch pipes except the first pipe and provided with a limit switch for detecting the closing of the valve. A pressure detector is mounted on each of the branch pipes except the last pipe. The valve on each branch pipe opens in response to an opening signal from the pressure detector on the preceding branch pipe and closes in response to both a closing signal from that pressure detector and a signal from the limit switch on the valve on the following branch pipe, whereby the number of branch pipes used for feeding the waste gas is controlled in accordance with variations in the feed of waste gas.

Abstract: A fuel burner safe starting system which utilizes a pilot valve and a main valve is disclosed. A flame detection system operates in conjunction with a relay which properly ignites and operates the fuel burner system. In the event of a failure which improperly energizes the relay, the safe starting system prevents the fuel valves from opening.

Abstract: A ground flare stack is described having a plurality of stages for combustion to accommodate various quantities of combustible waste gas, the stack having a dished base of gravel with a central combustion chamber with an enlarged opening at the bottom for entrance of air to support combustion, the central combustion chamber having an enlargement at its upper end with a converging discharge, a plurality of stages of combustion being provided within the chamber, the central combustion chamber being surrounded by a stack in spaced relation with a converging portion disposed around the combustion chamber enlargement and a cylindrical stack thereabove, with a diode to prevent downflow through the cylindrical stack, an acoustical and wind shielding fence being around the bottom of the stack permitting air to be supplied to the bottom of the stack and of the combustion chamber, additional stages of combustion being provided outwardly of the upper end of the central combustion chamber.

Abstract: A self-contained electric igniter in which the ignition pilot is actuated by a rechargeable battery to supply energy for the spark provided by an igniter. All energy for opening the valve of the main gas valve is supplied by a millivolt thermopile generator which together with additional thermopiles charges the battery. A diode is located in the battery charging line to prevent reverse flow of current from the battery to the thermopiles. The system has a safety valve which closes off flow of gas into the system in the event the pilot burner fails to ignite and a flame switch which closes off the flow of current to the main gas valve and consequent flow of gas into the system in the event the pilot burner is extinguished. It also has a damper control system which is closed when the system is shut off to reduce stand-by losses and conserve energy.