61results about How to "Stable combustion" patented technology

The application discloses a premixing noise reduction burner and relates to the technical field of burners. The premixing noise reduction burner comprises a burner body and a gas mixing structure. The burner body is internally formed with a first premixing chamber and a second premixing chamber. A first sound insulation plate is located between the first premixing chamber and the second premixing chamber. The burner body is provided with a second sound insulation plate opposite to the first sound insulation plate. The first sound insulation plate is provided with an ignition mechanism. The gas mixing structure is arranged in the second premixing chamber. The first premixing chamber and the second premixing chamber of the premixing noise reduction burner can be used for mixing air and gas. The first sound insulation plate and the second sound insulation plate can reduce the flow rate of the mixed gas, so that the mixed gas can be more fully mixed. Meanwhile, the first sound insulation plate and the second sound insulation plate can also reduce the noise of the mixed gas. Therefore, the premixing noise reduction burner can fully mix the air and the gas, stably burn the mixed gas and effectively reduce the noise of the mixed gas.

This utility model relates to the field of conveying device technology, and in particular to a material conveying device for a cogeneration combustion boiler. The technical solution includes a support frame, a set of transmission rollers rotatably arranged between the support frames, and a transmission belt between the transmission rollers; a motor fixedly mounted on one side of the support frame, the output end of the motor being connected to one end of the transmission rollers via a diverter; and multiple connecting plates fixedly mounted on the outer wall of the transmission belt, with a hopper assembly for material conveying fixedly mounted on one side of each connecting plate. This utility model allows for flexible adjustment of the hopper's volume and shape according to actual production needs, thereby precisely controlling the material conveying amount, avoiding excessive or insufficient material conveying, reducing energy waste, lowering equipment operating pressure, and ensuring stable boiler combustion and production capacity output.

This invention discloses a nicotine-resistant pectin lyase mutant and its application in tobacco leaf treatment. Using pectin lyase PL6 as the starting enzyme, this invention designs and optimizes mutation sites, designing single-site saturation mutations based on the two hydrogen bond formation sites between the enzyme and nicotine, Lys-107 and Asp-84, to construct mutants. The pectin lyase mutants D84A and K107R of this invention retain 83.63% and 81.30% of their enzyme activities at a 1% nicotine concentration, respectively. Spraying tobacco leaves with D84A and K107R enzyme solutions significantly improves tobacco leaf quality due to pectin degradation.

The application discloses a hot water boiler based on a porous medium burner, which comprises a hot water boiler shell, wherein the hot water boiler shell comprises a boiler barrel, the outer side of the boiler barrel is provided with a water jacket for storing water, and the inside of the boiler barrel is fixedly provided with a porous medium burner; the inner cavity of the porous medium burner comprises a combustion reaction zone, the two ends of the combustion reaction zone are provided with anti-backfire areas, the two ends of the porous medium burner are provided with mixed gas inlets, the mixed gas inlets are connected with mixed gas input pipelines, one end of the mixed gas input pipelines extends out of the hot water boiler shell and is connected with a gas fuel supply device; the porous medium burner is internally provided with an ignition device, mixed gas flows into the combustion reaction zone from the mixed gas input pipelines and is ignited by the ignition device, heat generated by combustion of the mixed gas heats water in the water jacket, flue gas is discharged from the combustion reaction zone through the pores of the porous medium of the porous medium burner and is discharged into a flue gas treatment mechanism connected with the hot water boiler shell, the gas utilization rate is improved, and the heat diffusion speed is slowed down.

This utility model relates to the field of gas appliance technology, specifically providing a honeycomb heating element and a burner for use in a burner. The honeycomb heating element includes a honeycomb heating element body and a first flow restrictor. The first flow restrictor includes a first flow restricting part and a second flow restricting part, which cooperate to form a groove-shaped structure. The honeycomb heating element body is embedded in the groove-shaped structure. The first flow restricting part is attached to the bottom of the honeycomb heating element body; the second flow restricting part is attached to the side surface of the honeycomb heating element body to form a tight, filling fit with the inner wall of the outer ring of the burner cavity when the honeycomb heating element body is installed in the burner cavity. This utility model improves the sealing performance of the honeycomb heating element when installed in the burner cavity, preventing gas flow from flowing out from the junction of the honeycomb heating element and the burner cavity, improving the stability of gas combustion, and avoiding backfire.

The utility model discloses an ammonia gas stable combustion device which comprises a flame generator, an ammonia gas adding device and a pure oxygen adding device, the flame generator enables ignition fuel and oxygen to be mixed and combusted to generate flames, the ammonia gas adding device is used for adding ammonia gas to the outer side of the flames, the pure oxygen adding device is used for adding pure oxygen to the outer side of the ammonia gas, and the ammonia gas is stably combusted in a high-temperature area of the flames under the oxygen-enriched condition. According to the device, ignition fuel and oxygen are mixed and combusted to generate flames, the temperature of a high-temperature area of the flames reaches 2000 DEG C, ammonia gas and pure oxygen are heated and ignited, and the ammonia gas is high in combustion speed and not prone to flameout under the oxygen-enriched working condition, so that the ammonia gas can be stably combusted in the high-temperature area of the flames under the oxygen-enriched condition.

The utility model discloses a boiler flue gas recirculation device which comprises a boiler main body which is arranged on a base in a supporting mode through a supporting rod. The flue gas filtering assembly is arranged at the rear end of the boiler main body, the flue gas filtering assembly is connected with a flue gas outlet pipe of the boiler main body, and flue gas is filtered through the flue gas outlet pipe; the gas inlet pipe comprises a first inlet pipe and a second inlet pipe, the first inlet pipe is connected with the boiler main body, and the second inlet pipe is connected with a neutralizing seat on the base; a part of flue gas of the flue gas filtering assembly is neutralized by a neutralizing seat on the base, and is input into the boiler main body again to be combusted again; and the other part of flue gas is discharged through a discharge pipeline. According to the utility model, part of neutralized flue gas is re-introduced into the boiler for re-combustion, so that residual energy in the flue gas can be fully utilized, and the overall combustion efficiency and heat efficiency of the boiler are improved.

The invention discloses a rotary smokeless open fire moxibustion device, and relates to the technical field of moxibustion health maintenance equipment. The box body is internally provided with a containing cavity, and a pedal extending to an opening is arranged in the containing cavity; a rotary moxibustion therapy assembly and a filtering and purifying assembly are further arranged in the box body. The rotary moxibustion therapy assembly comprises a stepping motor, a transmission gear set and a pomander used for fixing a moxa cone, and the pomander is eccentrically fixed to a rotating piece of the transmission gear set and driven by the stepping motor to rotate around the pedal area. The filtering and purifying assembly comprises a filtering cotton box, a three-way catalyst box and an exhaust port provided with a fan which are communicated in sequence. And the air inlet hole, the accommodating cavity and the filtering and purifying assembly on the box body are sequentially communicated under the driving of the fan to form a directional air circulation passage. The limitation that the traditional moxibustion position is fixed is broken through, and all-directional dead-corner-free physical therapy is achieved; meanwhile, through directional airflow and a multi-stage deep purification system, stable combustion of moxa cones is guaranteed, and environment-friendly zero emission of waste smoke is achieved.

The utility model discloses a sonic torch burner. The sonic torch burner comprises a Laval nozzle, a gas inlet of the Laval nozzle is connected with a gas outlet of the torch gas pipe, and a pressure regulating valve is arranged at one end, far away from the Laval nozzle, of the torch gas pipe; a flow velocity sensor for monitoring the airflow velocity is arranged at the narrow throat of the Laval nozzle; and the pressure regulating valve and the flow velocity sensor are connected with the controller. The utility model further discloses an elevated torch and a ground torch. Through the combined control of the pressure regulating valve, the flow velocity sensor and the controller, the airflow velocity at the narrow throat of the Laval nozzle is ensured to be sound velocity, so that the stable supersonic speed regulation and control of the combustible gas velocity at the outlet of the Laval nozzle are ensured, and the combustion stability is further realized.

The present application relates to the technical field of aviation gasoline, and discloses unleaded aviation gasoline and a preparation method thereof.The unleaded aviation gasoline comprises: 75-85 wt% of polymethylbenzene, and 15-25 wt% of at least two of alkylate, a side line distillation component of an alkylate device, light naphtha and isopentane; wherein the motor octane number of the polymethylbenzene is not less than 108.The product quality index of the unleaded aviation gasoline meets the standard of the American Society for Testing and Materials, that is, the technical requirement of ASTM D7719-2018 high-aromatic unleaded aviation gasoline.The unleaded aviation gasoline has the characteristics of good component continuity, stable combustion and high motor octane number, and meets the high-standard use requirement of unleaded and high-octane aviation gasoline.

The application discloses a kind of high-temperature combustion atmosphere under packed bed structure multivariate detection system and method, gas supply system, porous medium combustion unit, real-time monitoring system sequentially connect, the top of porous medium combustion unit is provided with high-temperature flue gas collection pipe, high-temperature flue gas collection pipe is connected product recovery chamber, product analyzer in turn;Real-time detection system includes temperature monitoring system and shape filler topography monitoring system;Detection rod is used to detect temperature abnormal area and the temperature and topography condition of different height cross section in combustion unit interior.This application uses thermocouple and high-speed camera to monitor temperature and outer filler crushing and discoloration condition in real time, detects the local temperature and topography state of inner filler that cannot be directly observed by detection rod, records overall damage and discoloration degree, quantitatively judges whether damage affects combustion.The health status of detection packed bed is helpful to the efficient use of low calorific value fuel, reduces pollutant emission, avoids resource waste.

This invention discloses a swirl-spray pre-combustion chamber co-combustion system and method for a UAV diesel engine. The system includes a cylinder block integrating a spherical pre-combustion chamber and a main combustion chamber, a glow plug, a swirl injector, a main injector, and a control unit. The swirl injector injects igniting diesel fuel into the pre-combustion chamber, forming a rich mixture adhering to the wall. After ignition by the glow plug, the high-temperature combustion gas is injected into the main combustion chamber through a jet channel to achieve multi-point synchronous ignition. The control unit integrates altitude adaptive correction and a dual closed-loop control strategy to match injection and ignition parameters in real time. This invention can effectively shorten the combustion duration, reduce cycle fluctuations, and significantly improve the combustion stability and environmental adaptability of the engine over a wide operating range.

The application belongs to the technical field of engines, and proposes a combustion chamber head structure and a combustion chamber. The combustion chamber head structure comprises a head ring and a guide plate. The inner wall of the guide plate is sleeved with a vortex generator. A fuel nozzle cap cover is inserted into the vortex generator to form a swirl cup structure. A plurality of blowout holes for blowing off carbon are arranged on the side wall of the fuel nozzle cap cover to realize the fuel flushing of the nozzle shell blowout port, effectively inhibit the fuel adhesion on the nozzle shell blowout port and the nozzle end face, and ensure the long-time work of the nozzle shell. Meanwhile, in combination with the vortex generator, the extinguishing margin of the ground slow speed and the air slow speed is expanded while meeting the long-life work of the nozzle.

This invention provides a method for manufacturing an aging catalyst based on an engine bench. The method includes: Step 1, performing state testing and aging tests on a new catalyst on an engine bench; Step 2, comparing whether the test parameters in Step 1 meet the requirements. If not, returning to Step 1 for aging tests; if they meet the requirements, installing it on a vehicle for emission testing; Step 3, if the emission test results do not meet the requirements, returning to Step 1 to continue the aging test; if they meet the requirements, ending the test. The state testing includes a combination or any one of the following: oxygen storage capacity test during the catalyst's ignition phase, emission test during the catalyst's ignition phase, and oxygen storage capacity test under hot conditions. This invention's manufacturing method ensures the engine operates in a richer state, resulting in more stable combustion, shorter aging time, and allows more air-fuel mixture to mix and burn in front of the catalyst during changes in operating conditions, thereby controlling the degree of aging inside the catalyst carrier and making it closer to real-world conditions.

The invention relates to an energetic material based on a urea-potassium perchlorate eutectic system and a preparation method of the energetic material, and belongs to the technical field of safe and environment-friendly energetic materials. The energetic material based on the urea-potassium perchlorate eutectic system is prepared from the following components in parts by weight: 18 to 35 parts of high-molecular fluorine polymer with the particle size of 50 to 400 microns; 15-40 parts of active metal powder with a particle size of 10-75 [mu] m; 10-30 parts of urea with a particle size of 20-100 [mu] m; 12-35 parts of potassium perchlorate with a particle size of 10-120 [mu] m; 0.5 to 3 parts of a silane coupling agent; 0.5 to 5 parts of a binder; 5 to 10 parts of nano silicon dioxide; 0.5-3 parts of a stabilizer; the urea and the potassium perchlorate are used for constructing a urea-potassium perchlorate eutectic system. According to the energetic material, through co-crystallization treatment of urea and potassium perchlorate, the synergistic effect of an oxidizing agent and a gas generating agent is optimized, and then the problems that a traditional energetic material for emission is large in pollution and poor in safety are solved.

The present application relates to the field of boiler combustion technology of thermal power plant and discloses a pulverized coal burner, the pulverized coal burner comprises a first combustion cylinder, a flow guide pipe, a second combustion cylinder and a combustion stabilizer, the flow guide pipe has an air inlet end and an air outlet end, the air outlet end is communicated with the first combustion cylinder, the flow guide pipe is used for guiding the mixed gas flow carrying the pulverized coal into the first combustion cylinder, the second combustion cylinder is arranged in the interior of the first combustion cylinder, an annular channel is formed between the second combustion cylinder and the first combustion cylinder, the second combustion cylinder is used for dividing the mixed gas flow into a first-stage gas flow flowing through the second combustion cylinder and a second-stage gas flow flowing through the annular channel, the combustion stabilizer is arranged on the flow guide pipe, the combustion stabilizer has an air outlet part, the air outlet part is in the interior of the flow guide pipe and faces the second combustion cylinder, and the air outlet part is used for spraying the flame and igniting the first-stage gas flow and the second-stage gas flow in sequence. The pulverized coal burner of the embodiment of the present application can be ignited in batches and realize stable and sufficient combustion.

The application discloses a contact type regenerative combustor based on pure ammonia catalysis and a thermoelectric conversion system thereof, and the device comprises a body surrounded by an upper wall surface, a lower wall surface and a side wall surface, and the body is provided with a plurality of splitter plates and a tail gas baffle; the inner surfaces of the upper wall surface and the lower wall surface are coated with a perovskite catalyst layer; the outer sides of the upper wall surface and the lower wall surface are directly attached with thermoelectric modules, and the outer sides of the thermoelectric modules are provided with cooling plates. The application optimizes the flow field and enhances the disturbance through the splitter plates, guides the tail gas to preheat the mixed gas by using the baffle, and reduces the reaction activation energy by using the catalyst to assist combustion; the high-temperature tail gas directly heats the hot end of the thermoelectric module, and the liquid cooling plate maintains the low temperature of the cold end, thereby forming efficient thermoelectric conversion. The application has the advantages of compact structure, high thermal efficiency, effectively widened stable working range of ammonia combustion, and solved problems of small temperature difference, low efficiency and poor combustion stability of ammonia fuel of the existing combustor thermoelectric system.

The utility model discloses a garbage incinerator hearth heat -proof heat preservation optimization structure belongs to garbage incineration equipment technical field, aims at solving traditional incinerator heat loss big, furnace wall temperature is high, the low temperature of secondary air leads to the problem such as high operating cost, low combustion efficiency, including inner furnace wall, outer furnace shell, both constitute double -deck structure, and the inner furnace wall front arch, rear arch is water cooled wall, and the vertical section is equipped with secondary air through -hole, and below is the furnace grate, the outer furnace shell and the inner furnace wall form cavity heat -proof, and its arch shell is equipped with the air extraction bin and through -hole, and the air extraction bin communicates cavity, and the through -hole corresponds with secondary air through -hole, and the fan passes through the air extraction pipe, air supply pipe and will cavity hot air as secondary air send into hearth. Meanwhile, water cooled wall and arch shell are matched through hanging block, positioning column, hanging groove, positioning groove, and are fixed with bolt, ensure that the connection is firm, and the structure realizes efficient heat -proof heat preservation and waste heat recovery, and optimizes secondary air supply, improves combustion efficiency, reduces pollutant emission and operating cost.

The utility model provides a torch head for eliminating smoke by using compressed air, which relates to the technical field of tail gas treatment in the petrochemical industry and comprises a torch cylinder body, an incandescent light ignition device, a compressed gas cylinder, an induced draft fan and an exhaust pipe. According to the torch head for eliminating smoke by using the compressed air, after emptying gas generated in industrial production enters a torch system through the gas inlet cylinder, the emptying gas stably enters the torch cylinder body through the connecting cylinder. And the emptied gas is ignited by the incandescent light in the torch cylinder body for combustion treatment. The induced draft fan is started, negative pressure is formed in the compressed gas cylinder, and external compressed gas enters the compressed gas cylinder and then is sprayed into the torch cylinder in a high-speed jet flow mode through exhaust holes in a hole plate in the side face of the periphery of the exhaust pipe. The compressed gas of the high-speed jet flow is fully mixed with the emptying gas, so that the disturbance of the gas is enhanced, and the emptying gas is more fully combusted. And meanwhile, the supplement of the compressed gas is beneficial to stabilizing the flame, so that the flame is prevented from being extinguished or unstable combustion caused by factors such as strong wind is prevented.

The present application relates to the technical field of thermal power generating units, and specifically discloses a burner swing angle control method based on a large language model combined with expert knowledge, which comprises the following steps: obtaining unit historical data, establishing an optimal working condition data set according to the unit historical data; detecting non-steady working condition data in the optimal working condition data set, cleaning the optimal working condition data set according to the non-steady working condition data, and obtaining a steady working condition data set; obtaining historical coal mill start-stop conditions, establishing a complete data set according to the historical coal mill start-stop conditions; establishing a burner swing angle model according to the complete data set, and outputting a burner swing angle value under a steady working condition according to the burner swing angle model; obtaining unit real-time data, correcting the burner swing angle value under the steady working condition according to the unit real-time data combined with expert knowledge, and obtaining a final burner swing angle value. The present application can realize accurate control of the burner swing angle, and make the combustion process more efficient and stable.

This application relates to a hydrogen-blended combustion system for a coal-fired power boiler and a method for operating the system. The method includes: acquiring the operating status information of the coal-fired power unit; determining the operating stage of the unit based on the operating status information; during a deep peak-shaving period, controlling the pulverized coal-hydrogen mixed burner in the main combustion zone to blend hydrogen for combustion, assisting in stable combustion at low loads; during a period of rapid load increase, controlling both the pulverized coal-hydrogen mixed burner in the main combustion zone and the pure hydrogen burner in the burnout zone to simultaneously blend hydrogen, rapidly increasing the boiler's thermal load; and during a period requiring peak load, controlling both the pulverized coal-hydrogen mixed burner in the main combustion zone and the pure hydrogen burner in the burnout zone to simultaneously blend hydrogen, enhancing the unit's constant load capacity. This effectively improves the dynamic load adaptability of the coal-fired power unit and ensures the combustion effect of the coal-fired power boiler.

The utility model relates to the field of LNG (liquefied natural gas) combustion, in particular to a special ultralow-temperature micro-pressure-drop LNG combustor which comprises a combustor body. An expanding pipe is arranged at the bottom of the burner body, an air inlet pipe is arranged at the bottom of the expanding pipe, a heat insulation layer is movably connected to the outer surface of the air inlet pipe, a spiral piece is arranged in the air inlet pipe, the air injection ring is fixedly connected to the outer surface of the burner body, and a plurality of nozzles are fixedly connected to the inner side of the air injection ring. The rear end of the air injection ring is fixedly connected with a fixing pipe, and two porous ceramic flow equalizing plates are arranged in the combustor body. Pressure reduction is carried out through the stepped expanding pipe, meanwhile, preheated air is sprayed out from the air spraying ring, the preheated air is forcibly mixed with LNG in the combustor body, meanwhile, the double-layer porous ceramic flow equalizing plate ensures that fuel gas is completely gasified and evenly distributed, and the combustion efficiency is improved. The problems that a traditional LNG burner is uneven in mixing, unstable in flame and too large in pressure drop under the ultralow-temperature working condition are solved.

This invention relates to an automatic feeding method based on the upper grate advance time, belonging to the field of waste incineration control technology, and includes the following steps: S1: The DCS control system collects the start and end times of the upper grate advance and calculates the upper grate advance time; S2: The DCS control system recalculates the feeding speed of the feeder based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the feeding speed of the feeder; S3: The DCS control system recalculates the number of cycles of the upper grate based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the number of cycles of the upper grate; S4: The DCS control system recalculates the number of cycles of the lower grate based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the number of cycles of the lower grate.

This invention belongs to the field of iron and steel metallurgy technology, specifically relating to a staged combustion system and process for a gas boiler. The system includes a burner connected to the gas boiler, a combustion-supporting gas structure, and a combustion-supporting air structure. The burner includes a combustion stabilizing plate, located at the front end of the burner and connected to the gas boiler. The combustion stabilizing plate has three layers of staged ignition units evenly arranged around its center: an inner layer, a middle layer, and an outer layer. The middle layer ignition unit includes multiple externally mixed combustion nozzles, where combustion-supporting air and gas mix outside the combustion stabilizing plate. The outer layer ignition unit includes multiple internally mixed combustion nozzles, where combustion-supporting air and gas mix inside the combustion stabilizing plate. The combustion-supporting gas structure provides fuel to the burner, and the combustion-supporting air structure provides combustion-supporting air to the burner. This invention effectively achieves complete combustion of the gas, reduces nitrogen oxide production, and provides a stable flame, demonstrating good performance in terms of safety, environmental protection, and efficiency.

The utility model discloses an outdoor warming frame, which relates to the field of outdoor articles and comprises a rectangular frame, supporting legs are arranged at the bottom of the rectangular frame, vertical columns are arranged at four corners of the rectangular frame, a detachable windproof plate is arranged between every two adjacent columns, a charcoal fire placing net is arranged on the rectangular frame, and the charcoal fire placing net is arranged on the rectangular frame. Rocker arms are arranged on the two sides of the charcoal fire containing net respectively, the two ends of each rocker arm are rotationally connected with the charcoal fire containing net and the rectangular frame respectively, a height adjusting device of the charcoal fire containing net is arranged on the rectangular frame, sliding rails are oppositely arranged at the bottom of the rectangular frame, and a collecting box is movably arranged in the sliding rails. According to the design scheme, the height of the heating frame is adjusted by adjusting the lengths of the supporting legs, stable combustion of flames is guaranteed through the windproof plate, the height of the charcoal fire placing net is adjusted according to the needed heating or barbecue temperature, and the portable barbecue oven is convenient to carry, high in practicability and good in heating effect.

This utility model discloses a dual-source multi-combustion system, comprising: a boiler, wherein an exhaust gas burner, a pulverized coal silo burner, and at least two air-coal burners are provided; a plurality of main combustion coal mills are connected to one or more air-coal burners; a plurality of pulverized coal storage mills are connected to the remaining air-coal burners in the boiler; a gas drying system is connected to the main combustion coal mills and the pulverized coal storage mills respectively, for drying and conveying the coal ground in the main combustion coal mills and the pulverized coal storage mills to form primary air-coal mixture; a plurality of fine powder separators are used to separate the primary air-coal mixture to form pulverized coal and exhaust gas; a plurality of exhaust gas fans are used to collect exhaust gas, and the outlets of the exhaust gas fans are connected to the exhaust gas burner and the pulverized coal storage mill respectively; a plurality of pulverized coal silos are used to collect the pulverized coal generated in the fine powder separators; a hot medium conveying system is used to convey the pulverized coal in the pulverized coal silos to the pulverized coal silo burners, and the gas drying system is also connected to the hot medium conveying system to preheat the pulverized coal conveyed to the pulverized coal silo burners.

The present application relates to the technical field of boiler combustion and discloses a multi-stage coal powder burner, which comprises an outer combustion cylinder, an inner combustion cylinder, an adjuster and a combustion stabilizer, the inner combustion cylinder is arranged inside the outer combustion cylinder, a channel is formed between the outer combustion cylinder and the inner combustion cylinder, the adjuster is connected with the outer combustion cylinder, the adjuster is used for guiding mixed gas flow, the mixed gas flow can be divided into a first-stage gas flow flowing through the inner combustion cylinder and a second-stage gas flow flowing through the channel, the adjuster is used for adjusting the flow of the first-stage gas flow and the second-stage gas flow, the combustion stabilizer is connected with the inner combustion cylinder, the combustion stabilizer is provided with a flame spout, the flame spout is arranged in the inner combustion cylinder and is used for spouting a flame to ignite the first-stage gas flow and the second-stage gas flow step by step. The multi-stage coal powder burner of the present application can adapt to different coal types to realize rapid ignition and stable and sufficient combustion.

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 support plate stabilizer structure for enhancing fuel oil atomization and suitable for an afterburner, which is used for improving the fuel oil atomization effect and the combustion stability, and comprises two support plate outer edge frames, a support plate tail edge frame, a fuel oil injection rod and the like, and a support plate mixing channel is formed between the two support plate outer edge frames; and a plurality of cooling air cavities are formed in the main body part so as to prevent key parts from being ablated in a high-temperature environment. First fuel oil impacts the fan-shaped channels through the oil injection holes to form an oil film, is further atomized under the shearing action of airflow and is mixed with air, and premixed gas is formed and then enters the concave cavity to be combusted. According to the design, flames in the concave cavity can be kept stable under the extreme conditions of low temperature, low pressure and the like, so that the ignition and flameout boundary of the combustion chamber is widened, meanwhile, high-temperature fuel gas in the concave cavity can heat transverse jet flow of second fuel oil, and the evaporation and mixing efficiency of the second fuel oil is improved. By means of the integrated design, the number of components is reduced, the flow resistance in the non-stress-application state is reduced, and meanwhile the thrust-weight ratio is increased.

The application discloses a sea-air amphibious fuel injection system and method based on a methanol-activated aluminum-water system fuel, the fuel injection system comprising a needle injection device, the needle injection device having coaxially arranged inner and outer flow channels and a flow regulating unit; the inner wall of the inner flow channel and the inner wall of the outer flow channel have a plurality of inner flow channel bosses and a plurality of outer flow channel bosses arranged alternately along the axial direction, which are used for generating local vortex when the fuel flows; the method comprises: a magnetic stirring device stirring the fuel in a high-concentration Al / MeOH fuel storage tank; a mixing device proportionally mixing the fuel output by the high-concentration Al / MeOH fuel storage tank and a methanol MeOH fuel storage tank; a fuel injection system receiving and injecting the mixed methanol-activated aluminum fuel and introducing seawater or air as an oxidant; the application can enhance mixing through vortex, adapt to seawater / air dual oxidants, adjust the fuel ratio to improve the combustion efficiency, and realize sea-air amphibious high-efficiency power.