20results about How to "Improve ignition performance" patented technology

The invention discloses a circumferentially-distributed multi-path sliding arc igniter and an operation method thereof, and relates to the field of high-end equipment.The center of the circumferentially-distributed multi-path sliding arc igniter is an existing single-path sliding arc igniter which can eject a single sliding arc and ignite small-flow fuel introduced from a first gas inlet, and the multi-path sliding arc is nested on the outer side of the single-path sliding arc igniter; and the generated multi-path sliding arc ignites the high-flow fuel introduced from the third gas inlet. The high-voltage electrodes are arranged in the circumferential direction, multiple paths of sliding arc plasmas are generated, the contact area between the high-voltage electrodes and fuel is increased, meanwhile, the total discharge power of sliding arcs is improved, the ignition capacity of the igniter is remarkably improved, the combustion efficiency is improved, and the high-voltage electrodes can be nested on an original single-path sliding arc igniter.

A multi-fuel combustor head permits hydrogen-doped or pure hydrogen combustion in some operating conditions. According to the control method of the multi-fuel combustion chamber, a low-pollution and low-carbon combustion organization form can be achieved. The multi-fuel combustion chamber head comprises a duty stage, the duty stage comprises a first air flow channel and a liquid fuel pipe, air provided by the first air flow channel and liquid fuel provided by the liquid fuel pipe are mixed in a pre-mixing space, and a second air flow channel extends on the periphery of the pre-mixing space, an outlet is located in the downstream side of the premixing space, a swirler is omitted in the second air flow channel, and an air supercharging device is arranged in the second air flow channel so that air can flow out of the outlet in an accelerated mode; the hydrogen distribution pipe comprises a plurality of spraying holes, and the spraying holes are arranged in a transverse spraying mode on the downstream of an outlet of the second air flow channel relative to the air flowing direction of the second air flow channel.

The invention provides a dual-fuel ring vortex combustor which comprises an annular structure formed by splicing a plurality of combustors, each combustor comprises a hydrogen pipeline, a gas collection tank and a U-shaped flame tube, at least one hydrogen hole, at least one kerosene nozzle and at least one air hole are formed in each U-shaped flame tube, the hydrogen holes are covered with the gas collection tanks, and the kerosene nozzles are arranged on the gas collection tanks. The hydrogen pipeline is communicated with the hydrogen hole through the gas collection tank. According to the dual-fuel ring vortex combustor, the ignition performance can be improved, combustion at the ignition nozzle can be enhanced, atomization of kerosene is further promoted, and the combustion efficiency and stable flame flowing can be improved; kerosene can be in full contact with hydrogen gas, so that more uniform mixing of double fuels is realized; and the guide plate is cooled, so that the ablation resistance of the high-temperature alloy of the guide plate is improved, and the service life of the high-temperature alloy of the guide plate is prolonged.

The invention discloses a preparation method of a [Ag2BNOD] n energetic film, the [Ag2BNOD] n energetic film obtained through the preparation method and application of the [Ag2BNOD] n energetic film in an MEMS initiating explosive device, and relates to the technical field of energetic materials.The preparation method of the [Ag2BNOD] n energetic film specifically comprises the following steps that S1, a quartz glass substrate is ultrasonically cleaned with absolute ethyl alcohol, washed with water and air-dried, the quartz glass substrate is put into a sodium hydroxide solution to be soaked, washed with water and air-dried, and the [Ag2BNOD] n energetic film is obtained; soaking the quartz glass substrate in a mixed solution of ethanol, water and triaminopropyltriethoxysilane, washing the quartz glass substrate with water, and curing the quartz glass substrate at 90-110 DEG C for 0.5-2 hours to obtain a quartz glass substrate modified layer; s2, washing the quartz glass substrate modified layer obtained in the S1 with deionized water, soaking the quartz glass substrate modified layer in a silver nitrate solution, taking out the quartz glass substrate modified layer, washing the quartz glass substrate modified layer with deionized water, soaking the quartz glass substrate modified layer in a BNOD aqueous solution, and repeating the steps for 10-30 times to obtain a [Ag2BNOD] n energetic film; the preparation method is very suitable for automation, and the obtained energetic film can improve the energy output characteristic of the MEMS device and improve the ignition capability of the MEMS device.

The invention discloses a combustion chamber with a centrifugal ignition nozzle, which comprises a casing shell, one end of the casing shell is provided with an air inlet convenient for introducing high-pressure air, the other end of the casing shell is connected with the tail end of a high-pressure turbine guider, and a flame tube is connected in the casing shell. The head end of the high-pressure turbine guider is arranged in the cartridge receiver shell and connected with the flame tube, an ignition nozzle extending into the flame tube is connected to the cartridge receiver shell and comprises a nozzle mounting seat fixedly connected to the outer side of the cartridge receiver shell, a nozzle rod is fixed to the nozzle mounting seat, one end of the nozzle rod is arranged outside the cartridge receiver shell, and the other end of the nozzle rod is connected with the flame tube. The other end of the nozzle rod extends into the cartridge receiver shell and is connected with the flame tube, the other end of the nozzle rod is connected with a nozzle head, fuel oil is sprayed out from an oil spraying hole of the nozzle head, and the end, away from the nozzle rod, of the nozzle head enters the flame tube; the atomization effect is good in the engine starting state, and the ignition performance of the engine in the starting state is improved.

The utility model relates to the technical field of kitchen utensils, and discloses a fire distributor, a burner and a stove, the fire distributor comprises a fire distributor main body and a shielding piece, the fire distributor main body comprises a fire distributor inner ring and a fire distributor outer ring, the fire distributor outer ring is arranged on the periphery of the fire distributor inner ring at intervals, and the shielding piece is arranged between the fire distributor inner ring and the fire distributor outer ring. The shielding part comprises an inner shielding part and an outer shielding part, the inner shielding part is arranged on the outer wall of the inner ring of the fire distributor, the outer shielding part is arranged on the inner wall of the outer ring of the fire distributor, the inner shielding part and the outer shielding part are oppositely arranged and form a shielding cavity, and the tip end of the ignition needle extends out of the shielding cavity. The shielding pieces are beneficial to enhancing the grounding conduction capacity of the ignition needle, when the ignition needle leaks electricity or ignites intermittently, the ignition needle always discharges electricity at the point, namely, the electricity is discharged above the inner fire cover and the outer fire cover, in addition, the inner shielding piece and the outer shielding piece are arranged on the inner ring of the fire distributor and the outer ring of the fire distributor respectively, and installation is easy and convenient.

The application relates to a grain refinement and ignition performance synergic optimization preparation method of a rare earth ignition alloy, and belongs to the technical field of rare earth ignition alloy manufacturing. According to percentages, the preparation raw material of the blank includes 35-45% of lanthanum, 15-30% of cerium, 5-15% of tin, 5-10% of zinc, 5-10% of praseodymium, 1-5% of neodymium and 15-25% of iron. The synergic action of the nanoscale active metal additive and the blank enables the rare earth ignition alloy to generate continuous sparks under slight friction or impact, and improves the ignition performance of the traditional rare earth ignition alloy.

The utility model provides an inner ring fire cover and a combustor, and relates to the technical field of cooking utensils. The inner ring fire cover comprises an upper fire cover and a lower fire cover, the upper fire cover detachably covers the lower fire cover to form a center cavity and a plurality of groove fire holes, the top face of the lower fire cover is provided with a limiting part protruding outwards, and the bottom face of the upper fire cover is provided with a limiting groove which is concave inwards and matched with the limiting part. The limiting part is inserted into the limiting groove to limit relative movement of the upper burner cap and the lower burner cap, so that deviation of the upper burner cap and the lower burner cap is prevented, targeted key protection on the ignition hole is facilitated, the ignition effect is improved, flame separation or fire leakage caused by deviation can be avoided, and the external environment interference resistance is higher. The limiting parts and the limiting grooves are simple in structure and convenient to manufacture, and production cost is saved. The bottom face of the limiting groove is provided with an inwards-concave groove, the top face of the limiting part is attached to the bottom face of the limiting groove, so that an ignition hole is formed in the groove, the ignition hole is detachable, and cleaning of the ignition hole is facilitated after the ignition hole is blocked by oil dirt or overflowing liquid.

The application relates to the technical field of gas turbine engines and discloses a laser ignition device and a combustion chamber with the same. The laser ignition device comprises a laser mounting seat, an igniter mounting hole and a protection component mounting hole are arranged on the laser mounting seat; an igniter component, a lens body on the igniter component extends into the igniter mounting hole; a lens protection component, the lens protection component comprises a shell and a valve, the shell is fixedly connected with the laser mounting seat, a gas leakage hole is arranged through the shell, the valve is rotatably arranged in the shell, an extension piece is connected to the valve, a shielding piece is arranged at one end of the extension piece away from the valve, and a spiral vane is arranged on the valve in the axial direction of the shell. The laser ignition device is provided with the lens protection component, the valve is driven to rotate by the airflow in the combustion chamber, the lens body is automatically shielded and exposed in the ignition and non-ignition states. The time that the lens body is exposed to the high-temperature airflow is effectively reduced, the lens body is prevented from being polluted, scratched and corroded, and the service life of the lens body is prolonged.

This invention discloses a fuel atomization system suitable for the combustion chamber of a regenerative micro gas turbine, comprising: a T-shaped evaporator, a swirling oil-gas duct, a coaxial atomizing nozzle, an air intake pipe, and a fuel line protection sleeve; the T-shaped evaporator, the swirling oil-gas duct, and the coaxial atomizing nozzle are arranged coaxially, the air intake pipe is eccentrically connected to the side wall of the coaxial atomizing nozzle and can introduce high-pressure gas from the section before the regenerator after the compressor, the initially atomized mixed oil and gas enters the swirling oil-gas duct for further atomization and then evaporates and is ejected through the T-shaped evaporator, the fuel line protection sleeve is coaxially arranged on the outside of the swirling oil-gas duct and the coaxial atomizing nozzle and can avoid the direct impact of high-temperature backflow gas on the coaxial atomizing nozzle. This invention can significantly optimize fuel atomization quality, shorten the combustion chamber length, improve combustion efficiency, and improve the uniformity of combustion chamber outlet temperature distribution by adding a coaxial atomizing nozzle and an air intake pipe upstream of the traditional evaporator.

The invention discloses a double-path sliding arc ignition head based on multi-point atomization, strong rotational flow and bluff body backflow flame stabilization and a liquid ammonia cooling electrode and an operation method of the double-path sliding arc ignition head. A first sliding arc is arranged in a first pre-combustion stage and mixed with atomized ammonia to form flame, and meanwhile, under the action of a bluff body and a strong rotational flow backflow area, atomization and combustion of the ammonia in the first pre-combustion stage are promoted; a second sliding arc is arranged in a second pre-combustion stage, atomized ammonia is mixed with air, flame is formed through discharging of the sliding arc, and the atomized ammonia is ignited to form second pre-combustion stage flame; under the action of the first pre-combustion stage flame and the second pre-combustion stage flame, stable main combustion stage flame is formed; the electrode is cooled by latent heat of liquid ammonia gasification, the ablation rate of the electrode is reduced, the discharge power is improved, and the gliding arc ignition capability is greatly improved. The defects that a high-power sliding arc electrode is high in ablation speed, short in service life and the like are overcome, liquid ammonia is ignited through a double-path high-power sliding arc, pre-combustion-stage and main-combustion-stage flames are formed, and the problems that ammonia ignition is difficult, combustion is unstable and the like are effectively solved.

The invention belongs to the technical field of coal bed gasification drilling and completion, and discloses a plug cone type fusible tube and a machining method.The plug cone type fusible tube comprises a supporting tube and a combustible plug cone, and a plurality of mounting holes are formed in the supporting tube; the combustible plug cones are inserted into the mounting holes in a one-to-one correspondence mode and fixedly connected with the supporting pipe, and the combustible plug cones are made of fusible alloy or fusible nonmetal. According to the plug cone type fusible tube, a coal seam can be effectively ignited after the combustible plug cone is combusted at high temperature, meanwhile, the supporting tube can prevent the coal seam from collapsing, it is guaranteed that an igniter safely withdraws, it is guaranteed that a gas channel is smooth after combustion, and the manufacturing cost is low.

The utility model discloses an automatic ignition robot device, which relates to the technical field of automation and comprises an ignition device, a control part, a power part, a pulley and a guide rail, the power part is matched with the pulley, so that the pulley reciprocates on the guide rail; the guide rail is laid at the ascending pipe cover of the coke oven; the control part is electrically connected with the ignition device and the power part respectively, and the control part controls the power part to act and drives the ignition device to ignite at the ascending pipe cover of the coke oven; and the power part is controlled to return to the starting point. The utility model discloses and provides an automatic ignition robot device which effectively solves the problem that a cable of an ignition gun of an ascending pipe of a coke oven is burnt out, improves the success rate of ignition of the ascending pipe, reduces the probability of smoking of the ascending pipe, reduces pollution to the environment, and is simple in appearance and low in manufacturing cost.

To improve ignition performance of a gas generating agent in a gas generator. A gas generator includes: an igniter assembly including an igniter body accommodating an ignition charge, the igniter body including an igniter cup ruptured by a combustion product generated by combustion of the ignition charge and an electro-conductive pin that supplies a current for igniting the ignition charge, a collar portion holding the igniter body, and a holding portion interposed between the igniter body and the collar portion and fixing the igniter body to the collar portion, the igniter assembly releasing the combustion product; a housing having a tubular shape, the housing including a combustion chamber accommodating a gas generating agent, and including a gas discharge port through which a combustion gas generated by combustion of the gas generating agent is discharged; and an elastic member having a tubular shape, the elastic member being disposed between the igniter assembly and the gas generating agent in the housing with an axial direction of the elastic member being in a direction same as a direction of the housing, the elastic member including a regulation portion at an inner periphery thereof, the regulation portion being configured to regulate a direction in which the igniter cup ruptured expands.

The invention discloses a noble metal catalyst suitable for purifying tail gas of a natural gas vehicle and a preparation method of the noble metal catalyst. The noble metal catalyst is prepared from noble metal and a carrier material through a double-solvent method, the loading capacity of the noble metal in the noble metal catalyst is 1-3 wt%, and the noble metal is calculated as a simple substance; the carrier material is a cerium-containing oxide oxygen storage material, and the cerium content in the cerium-containing oxide oxygen storage material is greater than or equal to 40wt%. The preparation method is used for preparing the noble metal catalyst. The noble metal in the noble metal catalyst is uniformly dispersed, the dispersity is high, and the noble metal catalyst has good light-off performance and hydrothermal aging resistance.

The invention relates to the technical field of wide-range ramjet engines, solves the technical problems of difficult ignition and flame stabilization in a combustion chamber and high combustion difficulty of wide Mach number organizations caused by cold start of fuel in a supersonic combustion chamber, and particularly relates to a nitrous oxide-based gas atomization injection concave cavity device and a gas atomization injection and atomization mixing flame stabilization method. Comprising an injection concave cavity integration module arranged on the supersonic combustion chamber and a gas atomization kerosene spray hole with an outlet formed in the surface of the injection concave cavity integration module, and a concave cavity is formed in the downstream of the gas atomization kerosene spray hole. High-temperature nitrous oxide gas and kerosene are mixed in the injection concave cavity integration module to form kerosene which is inflated and atomized by the high-temperature nitrous oxide gas, and the kerosene is transversely injected at the upstream of the concave cavity through the gas atomization kerosene injection hole. The ignition performance of liquid kerosene can be improved, meanwhile, the atomization particle size can be reduced, the jet flow penetration depth can be increased, the fuel gas mixing efficiency is improved, and the supersonic combustion flame stabilizing range of the liquid kerosene is widened.

A gas turbine combustor is provided. The gas turbine combustor includes a first air flow passage that causes air to flow out toward a combustion chamber, and a fuel flow passage that causes fuel to flow out with respect to the air flowing out from the first air flow passage. The first air flow passage is configured to expand the air flowing out from the first air flow passage toward the inside of the combustion chamber. The gas turbine combustor includes a second air flow passage that causes air to flow out from a vertical direction with respect to the air flowing out from the first air flow passage.

The invention belongs to the field of material surface modification and coating technology, and discloses a high-speed low-temperature spray gun and a system thereof for cooling a flame flow in a combustion chamber, including a combustion chamber, the combustion chamber is composed of a contraction section, a combustion section and an inlet section, the contraction section is connected to a nozzle, a porous catalytic ceramic plate, a gas distribution unit, and a spray gun tail seat are arranged in sequence at the inlet section, a spray gun housing is arranged outside the combustion chamber, a nozzle housing is arranged outside the nozzle, a powder delivery needle is arranged in the middle of the spray gun tail seat, the spray gun tail seat is provided with a curved compressed air channel and is connected to the gas distribution unit, a cooling gas distribution ring is arranged on one side of the combustion section close to the contraction section, an ignition port is arranged on the other side, and a gas channel is arranged in sequence through a porous catalytic ceramic plate, a gas distribution unit, and the middle of the spray gun tail seat and connected to a gas interface. The spray gun of the present invention reduces the spraying temperature, thereby effectively inhibiting oxidation and decomposition of particles during the spraying process.

The fire cover comprises a plurality of first ignition holes which are formed in the circumferential direction of the fire cover, the first ignition holes are formed upwards in an inclined mode from inside to outside in the radial direction of the fire cover, and the tail ends of the first ignition holes are arranged on the inner side of the wall of the fire cover. The side wall of the fire cover is provided with a concave area which is concave towards the interior of the fire cover, the concave area comprises an upper wall face and a lower wall face, the plane where the upper wall face is located intersects with the plane where the lower wall face is located, and the upper wall face and the lower wall face both extend to the first fire hole, so that the concave area is communicated with the first ignition hole. The concave area is arranged on the fire cover, the collision violence degree and the secondary mixing degree of the gas mixture and air are different due to different distances from the spraying position of the gas mixture of different first ignition holes to the upper wall face of the concave area, concentration difference is formed, the disturbance degree of gas in the ignition area is improved, and the ignition effect is improved. And the ignition capability is enhanced.

The utility model provides a burner which comprises a gas mixing base, an ignition device and an annular boss, a through hole is formed in the gas mixing base, the bottom end of the annular boss is connected to the gas mixing base and integrally formed with the gas mixing base, the top end of the annular boss extends upwards in the vertical direction, the annular boss surrounds the through hole, and the ignition device is arranged on the through hole. The ignition device vertically penetrates through the through hole and the annular boss, and a gap is formed between the inner wall face of the annular boss and the peripheral face of the ignition device. The annular boss changes power line distribution of an electric field from the head of the ignition device to the discharging end of the inner ring fire cover, power lines around the axis of the ignition device are more gathered, a gap is formed between the inner wall face of the annular boss and the peripheral face of the ignition device, charge movement does not exist, and charge distribution on the surface of the ignition device is not affected. Therefore, the intensity of a local electric field between the head of the ignition device and the discharge end of the inner ring fire cover is improved, the ignition performance of the combustor is improved, the annular boss is arranged, the ignition device can be prevented from shaking, and stability is improved.