With provision for a retention flame (F23D14/26)

F23D14/26                     With provision for a retention flame (pilot flame igniters f23q0009000000)(19)

Ignition and operation method of burners at gasification of carbon-containing fuel types // 2533275
FIELD: power industry.SUBSTANCE: invention relates to the field of power engineering. An ignition and operation method of burners at gasification of carbon-containing fuel types using at least two gasification burners consists in the fact that one of the gasification burners is made in the form of a start-up burner, for ignition of which at least one pilot burner is used, which is ignited by means of an electrical ignition element; with that, by means of the pilot burner in the start-up burner there ignited is a mixture of combustible gas and oxygen-containing gas; with that, after the start-up burner is ignited, at least one other gasification burner is ignited from it, and the start-up burner is operated further due to change of the medium as one of gasification burners of carbon-containing fuel.EFFECT: invention allows preventing continuous consumption of combustible gas in a pilot or ignition burner.6 cl, 3 dwg

Supersonic plasma-chemical combustion-stabilisation device // 2499193
FIELD: power engineering.SUBSTANCE: supersonic plasma-chemical combustion-stabilisation device for a forward-flow combustion chamber, comprises two electrodes installed in the flow path of the combustion chamber that are serially arranged along the flow and made in the form of streamlined pylons with symmetrical aerofoil sections, one of which is an anode, electrically isolated from the metal wall of the combustion chamber and equipped with a tube to supply fuel and injectors for injection of fuel into the flow. At the same time the anode is bent so that the root part of the anode has negative sweep relative to the flow direction, and the end one - zero sweep, and the second electrode - cathode is arranged in the trace following the first one and is directly fixed on the wall of the combustion chamber, in the anode there is additionally a tube and injectors for injection of chemically active additives into the flow simultaneously with the fuel, the end of the root part of the anode at the side of the forward flow has a ledge in the form of a thin rectangular plate arranged in the plane of symmetry of the pylon, the rear edge of the plate is bevelled and has fillets in the corner points. At the same time the angle between the end surface and the rear edge of the anode is also rounded. Besides, on the rear edge of the end part of the anode in the zone of formation of the lower pressure zone there may be a cog arranged, for instance, of triangular or other shape, to ensure linkage of the discharge channel to it.EFFECT: invention makes it possible to provide for reliable ignition and stabilisation of combustion of hydrocarbon fuels in forward-flow supersonic combustion chambers in conditions, when traditional gas dynamic methods do not allow to do so.2 cl, 2 dwg

ethod for selective monitoring of main flame of each burner on multiburner boiler // 2484370
FIELD: power industry.SUBSTANCE: several burners are installed on the boiler external wall in one or several rows throughout the furnace height or in its corners. An igniter and a pilot burner are arranged in the housing of each burner. Pilot burner is intended for ignition and monitoring of availability of the main burner flame. Air and gas is supplied to the pilot burner at constant pressure. Flame of each pilot burner is monitored using the method that excludes the influence of flames of other working burners, for example with an ionisation sensor. Availability of the main flame of each burner is guaranteed with availability of flame of its constantly operating pilot burner. Automatic gas equipment units are installed before burners, and their control is performed by means of a burner control cabinet.EFFECT: invention allows creating a reliable method excluding false information on availability of flame on that burner at its loss.1 cl, 1 dwg

Flame stabilisation chamber of gas ring cover plate // 2484369
FIELD: power industry.SUBSTANCE: cover plate of a gas ring for a kitchen stove includes an upper side and a lower side; at that, lower side of the cover plate faces the corresponding housing of the gas ring; and at least one flame stabilisation chamber located on lower side of the cover plate, and an annular wall for providing insulation of the flame stabilisation chamber against pressure surges when the cover plate of the gas ring is connected to the corresponding housing of the gas ring. In addition, the cover plate of the gas ring includes at least two flame stabilisation chambers. At least one flame stabilisation chamber is located approximately in the middle between periphery and centre of the gas ring cover plate. The gas ring cover plate also includes at least one reference section to facilitate insulation of the flame stabilisation chamber against pressure surges when the gas ring cover plate is connected to the corresponding housing of the gas ring. At least one flame stabilisation chamber has a flattened cylindrical shape. At least one flame stabilisation chamber has a U-shape. At least one flame stabilisation chamber has a square cross section.EFFECT: invention allows providing flame stability of gas rings.20 cl, 9 dwg

Recuperative gas burner, and air heating method using that burner // 2471117
FIELD: heating.SUBSTANCE: recuperative gas burner includes housing, combustion chamber coaxially located in it, gas chamber with multijet gas nozzle and ignition device, air chamber located in annular space between combustion chamber and housing; at that, combustion chamber is provided with cylindrical and slot holes uniformly located along the perimetre; air supply branch pipe is located on the housing on gas chamber side; at that, gas burner includes cylindrical shell fixed in housing dividing the air chamber into external and internal annular air chambers interconnected between each other on the side of outlet nozzle; combustion chamber is equipped with longitudinal ribs uniformly located along the perimetre; housing is provided with heat insulation. At operation of the burner, first, air is supplied through external annular air chamber located between heat-insulated housing and cylindrical shell in the direction from gas chamber to outlet nozzle, where it is heated from annular shell and heat-insulated housing; then, in opposite direction, through internal annular air chamber located between annular shell and combustion chamber, where it is heated further from cylindrical shell, combustion chamber and longitudinal ribs, and after that, through cylindrical and slot holes to combustion chamber.EFFECT: increasing combustion efficiency of gaseous fuel by means of additional heating in it of air and inner recuperation of heat.4 cl, 1 dwg

Burner // 2459146
FIELD: power industry.SUBSTANCE: burner with burner head includes mixing tube (3) for pre-mixing of air and fuel; at that, pilot burner system is provided in lower part of mixing tube (3); besides, pilot burner system includes annular mixing cavity (10) with inlet for auxiliary air and for fuel for pilot burner and with outlet nozzles (7), mixing cavity (10) is equipped at least with two swirling blades (18) located near each outlet nozzle (7). Swirling blades (18) at least almost fully cutout the height of mixing cavity (10) relative to axial direction of outlet nozzles (7). Swirling blades (18) are located as pairs of swirling blades (18). One swirling blade (18) of pair of swirling blades (18) is located on outer part, and the second swirling blade (18) is located on inner part of mixing cavity (10) if to see in radial burner direction. Swirling blades (18) are fully integrated with tip (1) of burner. Burner head includes tip (1), intermediate ring (2) and mixing tube (3), which are assembled with each other in order to form the burner head. In circumferential direction of intermediate ring (2) there located are air inlet holes (15) connected to air channels (14). On outlet end of each air channel (14) there located is one or more reflecting holes (16) and reflecting holes (16) open to mixing cavity (10). Outlet nozzle (7) has round or conical or elliptical cross section.EFFECT: invention allows preventing the flame propagation against the flow direction.12 cl, 6 dwg

Configuration of holes of star-shaped burner // 2455563
FIELD: power industry.SUBSTANCE: housing of burner for burner device on kitchen gas appliance includes central part comprising gas inlet hole through which gas flows; multiple beam elements spread radially outwards from central part; the first part proximate to central part and including the first location of holes of side wall, which include the first set of slots located on side wall of the burner housing and passing downwards from upper surface of side wall to the first depth; the second part distal from central part and located along the first beam projection and including the second location of holes of side wall, which include the second set of slots located on side wall of the burner housing and passing downwards from upper surface of side wall to the second depth which is more than the first depth; and the third part located between the first and the second parts and along the first beam projection, which includes the third location of holes of the side wall, which include the third set of slots located on side wall of the burner housing and passing downwards from upper surface of side wall to the first depth and the second depth. The first set of slots having the first depth includes an open upper end which forms the part of upper surface of the burner housing. Slots with the first depth and with the second depth of the third set of slots are located alternatively. The second location of holes of side wall also includes multiple fully restricted holes of side wall. Fully restricted holes of side wall are vertically aligned with each of the slots of the second set of slots and are located under each of slots of the second set of slots. The third location of holes of side wall includes the only fully restricted hole of side wall, which is vertically aligned with each slot having the second depth, the third set of slots and located under each slot having the second depth, of the third set of slots.EFFECT: invention allows flame stability.28 cl, 6 dwg

ethod to control separate fuel supply // 2449217
FIELD: power engineering.SUBSTANCE: method to control flow of pilot fuel and flow of main fuel in separate fuel supply into a gas turbine combustion chamber in case of load drop. Speed of changing demand for fuel is monitored, and additional flow of pilot fuel is added, amount of which depends on speed of changing demand for fuel flow. Additional flow of pilot fuel is reduced to zero after load drop. Pilot fuel flow is restricted, when the quantity of additional separation drops to zero. Additional flow of pilot fuel is added, when speed of changing demand for fuel flow exceeds this negative value. Additional flow of pilot fuel is subtracted from the main fuel flow.EFFECT: invention makes it possible to reduce level of CO and NOx emissions.6 cl, 1 dwg

Burner for gas turbine, in which gas with low calorific value is used as fuel // 2430308
FIELD: power industry.SUBSTANCE: burner (4) for gas burner includes: swirler (21), plate (58), the first channel (18) via which fuel gas with low calorific value is supplied, and second channel (17) via which combustion air is supplied. The first and the second channels (17, 18) are located concentrically relative to longitudinal axis (2). Output of the first channel (18) is formed with convergent nozzle (50). Swirler (21) is installed at the outlet of the second channel (17). Plate (58) is tightly installed in the first channel (18) upstream nozzle (50) and has many holes (56) with calibrated section of the passage. Holes (56) are inclined in tangential direction relative to longitudinal axis (2) at the specified angle. For fuel gases having flame propagation speed of less than 300 mm/s, plate (58) has 36 to 38 holes (56) the diameter of which is 11.5 to 12.0 mm, and inclination angle of holes (56) is approximately 22. For fuel gases having flame propagation speed of 300 mm/s to 400 mm/s, plate (58) has 80 holes (56) the diameter of which is 8.5 mm to 9.0 mm, and inclination angle of holes (56) is 17 to 22. If calorific value of gas with low calorific value from the first channel (18) is less than 4.0 MJ/kg, then natural gas consumption is assumed from pilot line (46). Burner (5) is used only when gases with low calorific value are not available.EFFECT: high burner flexibility; operation is possible at the gas used with low calorific value and of any type within the whole working range of gas turbine.12 cl, 3 dwg

Silence a. p. a method of burning gaseous fuel, a device for its implementation and swirl to implement device // 2126515
The invention relates to energy and can be used in aggregates of heating systems, such as furnaces furnaces and boilers

The burner // 2044221
 
2550907.
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