23results about How to "Increase burn rate" patented technology

The invention discloses a static forest fire risk assessment method and system based on multi-source data and a remote sensing technology. The method comprises the following steps: establishing an index system of a target area and carrying out data acquisition; the collected data are preprocessed; calculating influence factors and index weights by using the preprocessed data, determining spatial and temporal distribution of calculation results of different influence factors, and calculating a comprehensive factor result by using each single influence factor according to a set weight; and evaluating the forest fire risk based on the obtained comprehensive factor result, and realizing dynamic monitoring of the forest fire risk value. According to the method, the accuracy and the real-time performance of forest fire space-time risk prediction are improved; and theoretical support is provided for follow-up forest fire risk prevention and control of electric power companies.

The present application belongs to the technical field of internal combustion engine, and particularly relates to a kind of alcohol hydrogen fusion engine precombustion chamber system and its control method.Alcohol hydrogen fusion engine precombustion chamber system includes the engine main body with the main combustion chamber and precombustion chamber being communicated with each other, and also includes methanol supply unit, hydrogen production unit, hydrogen delivery control unit, exhaust gas recirculation unit and main control unit;Main control unit collects engine operating parameters and judges current working condition, and adjusts methanol supply path, hydrogen supply path, precombustion chamber working mode, hydrogen production unit heating mode and on-off state of exhaust gas recirculation unit according to working condition.The present application can realize engine full-condition combustion performance optimization without complex auxiliary device, and also considers cold start reliability, high and low load combustion stability and operation energy efficiency, to improve the whole machine operation reliability and transient response capability.

The invention relates to the technical field of energetic materials, in particular to nickel fluoride catalyzed ammonium perchlorate / aluminum composite fuel and a preparation method and application thereof. The ammonium perchlorate / aluminum composite fuel consists of the following components in percentage by mass: 50-70% of ammonium perchlorate, 0-10% of nickel fluoride and the balance of aluminum powder. Due to the addition of NiF2, high and low decomposition peaks of AP are combined into a violent exothermic peak, and the temperature of the high-temperature decomposition peak is reduced by about 30 DEG C, which means that the burning rate of the propellant can be greatly improved; the heat effect of the fluorination reaction (55.98 kJ. G <-1 >) of aluminum is far higher than the heat effect of the oxidation reaction (31.05 kJ. G <-1 >) of aluminum, so that the explosion heat is improved by about 10% while the reaction path is optimized. Besides, the anhydrous NiF2 used in the formula is stable in physical and chemical properties and does not absorb moisture and deliquesce, the problem of long-term storage of common fluorides such as CuF2 and FeF3 is solved, and the product reliability is extremely high.

The utility model relates to the technical field of cigarette combustion cone falling detection, and discloses a cigarette combustion cone falling detection device. The detection device comprises a detection assembly (1), an exhaust fan (204), a cigarette holder (303) and a camera (305). The detection assembly (1) comprises a box body and an infrared distance sensor (102); the cigarette holder (303) and the infrared distance sensor (102) are located in the box body, and the infrared distance sensor (102) is configured to test the length of a cigarette in the box body; the camera (305) is mounted at the top of the box body and is used for shooting the combustion condition of the cigarettes in the box body in real time; the exhaust fan (204) is in airflow communication with the cigarette holder (303) to extract smoke generated by cigarette combustion. According to the application, a to-be-detected cigarette can be mounted on the mounting block through the mounting pipe and the cigarette holder, the combustion rate of the cigarette can be accelerated through suction force generated by the exhaust fan, and the falling of a cigarette combustion cone can be quickly detected in cooperation with the camera and the infrared distance sensor.

This invention discloses a graphene oxide / carbon nanotube-based coal combustion catalyst, its preparation method, and its applications, belonging to the field of catalytic combustion technology for efficient coal utilization. First, graphene oxide is used as a carrier, and then carbon nanotubes and manganese oxide are grown on its surface in a one-step process using condensation and redox reactions, followed by co-firing with coal. The graphene oxide / carbon nanotube-based combustion catalyst prepared by this invention effectively improves combustion efficiency, reduces the ignition temperature of coal, and lowers the reaction activation energy, resulting in significant economic benefits and broad application prospects.

The invention discloses a multi-time ignition module capable of adjusting the ignition energy level and a multi-time ignition control method. The multi-time ignition module comprises a power supply module, an ECU input signal processing module, a primary current sampling module, a secondary voltage sampling module, an MCU processing module and an ignition IGBT. According to the multi-time ignition control method, in one ignition control period, after an ignition control signal sent by an ECU is received, whether multi-time ignition is started or not is judged firstly, if not, only single-time ignition is executed, and if yes, whether energy-level-free control multi-time ignition or energy-level-adjustable multi-time ignition is executed continues to be judged. In the energy-level-adjustable multi-time ignition mode, the control signals of the corresponding levels are output to the ignition IGBT according to the different stages of the T2 pulse width parameter so as to control the primary side current of the ignition coil, and then the ignition coil can conduct different-energy-level control during multi-time ignition, so that the fuel oil combustion rate is increased, tail gas emission is reduced, the engine power is improved, and the energy-level-adjustable multi-time ignition mode is achieved. The service life of the ignition coil is prolonged.

This invention discloses a direct injection mixing intake structure for an LNG gas engine, comprising a multi-point injection module. The multi-point injection module includes a guide vane, an intake manifold, a mixer, and nozzles. The intake manifold is connected to the guide vane, the mixer is located in the intake channel of the intake manifold, and the nozzles are mounted on the guide vane and connected to the mixer. Several sets of guide vanes from the multi-point injection modules are sequentially connected in series to form a gas passage. The nozzles of each set of multi-point injection modules inject the gas from the gas passage into the mixer of their respective multi-point injection module, where it mixes with air supplied to the intake manifold of that multi-point injection module to form a mixed gas. Each set of multi-point injection modules corresponds one-to-one with each cylinder of the gas engine, effectively ensuring that the mixed gas drawn into each cylinder maintains a uniform and stable air-fuel ratio.

This invention provides an oxygen supply mechanism for a pulverized coal combustion device, comprising an oxygen-enriched channel, a central body, and a control component. One end of the oxygen-enriched channel is a nozzle extending through the pulverized coal channel, while the other end is located outside the pulverized coal channel and connected to an oxygen evaporation device. The nozzle includes a gradually expanding section that points outward along the axial direction of the nozzle, with its inner diameter gradually increasing. The central body is adjustable within the nozzle along its axial direction, forming an annular flow channel between the central body and the inner wall of the nozzle. One end of the control component is connected to the central body, and the other end extends to the outside of the pulverized coal channel. This oxygen supply mechanism allows for adjustment of the annular flow channel area by changing the position of the central body, enabling flexible control of the oxygen flow rate. This ensures optimal mixing of pulverized coal and oxygen under different load conditions and pulverized coal concentrations.

The utility model relates to the field of kitchen utensils, and particularly discloses a pot support and a kitchen range. The pot support comprises an energy gathering ring, an energy gathering cover and a corner piece; the energy-gathering cover is arranged on the inner peripheral side of the energy-gathering ring, the energy-gathering cover comprises an annular plane part, the annular plane part extends from the inner peripheral surface of the energy-gathering ring to the inner peripheral side of the energy-gathering ring, the energy-gathering cover is detachably connected to the corner piece, the cooker comprises the pot support, and the pot support is placed on the cooker through the lower supporting leg of the corner piece. The pot support is beneficial to improving heat exchange with the pot bottom and improving the combustion rate, and the energy gathering cover is detachable and convenient to clean.

The application discloses a cutting synergist for liquefied petroleum gas and a preparation method thereof, and belongs to the technical field of cutting synergists. The cutting synergist is prepared by mixing the following components with the mass content: an alkyl ferrocene mixture 5-8%, n-octane 6-10%, ethylene glycol monoethyl ether 8-10%, isooctyl nitrate 10-15%, acetone 15-25%, and 200# solvent oil 25-45%. The application is a high-efficiency energy-saving synergist for cutting liquefied petroleum gas, and the performance of the liquefied petroleum gas after the addition of the synergist can reach and exceed the cutting performance level of the original petroleum gas and acetylene gas, and the liquefied petroleum gas can completely replace acetylene gas, natural gas and pure propane to be used as industrial gas for metal cutting. The product performance exceeds that of natural gas, industrial propane and the same kind of synergists on the market, and has a wide application prospect, and is a great breakthrough of industrial gas in the industrial field of China.

The invention discloses a method for improving the burning rate of an end-combustion solid propellant. The method comprises the following steps: preparing a pure silver mesh belt; cutting the prepared pure silver mesh belt to obtain a rectangular strip-shaped pure silver mesh belt; the rectangular strip-shaped pure silver mesh belt is pretreated; embedding the pretreated rectangular strip-shaped pure silver mesh belt into the end combustion solid propellant in the direction perpendicular to the combustion surface; and after demolding, shearing and removing redundant pure silver mesh belts at the two ends of the end-combustion solid propellant to obtain the end-combustion solid propellant embedded with the pure silver mesh belts so as to improve the combustion speed of the end-combustion solid propellant. According to the method, the pure silver mesh belt is embedded in the end-combustion solid propellant, the area of a rapid heat dissipation path is increased, and heat is transferred from a combusted part to an uncombusted part, so that the combustion surface of the end-combustion solid propellant is enlarged, the combustion speed of the end-combustion solid propellant is increased, and the service life of the end-combustion solid propellant is prolonged. The problems that in an existing technical scheme, the burning speed of an end-burning solid propellant is limited in increasing amplitude, burning is uneven, and a single silver wire is prone to being snapped are solved.

The invention provides a high-energy high-burning-rate hydroxyl-terminated polybutadiene propellant containing coated aluminum powder and DAP-4 and a preparation method of the high-energy high-burning-rate hydroxyl-terminated polybutadiene propellant. Comprising the following components in percentage by mass: 16 wt.% of hydroxyl-terminated polybutadiene, 18 wt.% of coated aluminum powder, 54 wt.% of ammonium perchlorate, 10 wt.% of high-energy explosive and 2 wt.% of toluene diisocynate. The invention further relates to a preparation method of the high-energy high-burning-rate hydroxyl-terminated polybutadiene propellant containing the coated aluminum powder and the DAP-4. The DAP-4 adopted by the invention is a high-energy explosive with extremely high combustion rate, and the combustion rate of the DAP-4 is 3-5 times of that of RDX, HMX or CL-20; therefore, the DAP-4 is applied to the hydroxyl-terminated polybutadiene propellant, so that the combustion rate of the propellant can be improved. The hydroxyl-terminated polybutadiene propellant prepared by the invention has the characteristics of high energy and high burning rate.

The invention relates to a methanol M100 spark-ignition type marine engine, and belongs to the technical field of engines. Comprising an engine body. The system further comprises a control system, an ignition system and a methanol supply system. The control system is responsible for operation control of the whole engine. The methanol supply system supplies methanol to the methanol rail, the methanol passes through the methanol rail and then is atomized in the intake manifolds of the cylinders, and combustible mixed gas is formed by the methanol and pressurized air and enters the cylinders. And after the mixed gas enters each cylinder, a sparking plug contained in the ignition system ignites the combustible mixed gas to do work. By optimizing key technologies such as a combustion system, a control system and a safety system, efficient, clean and safe operation of the methanol M100 spark-ignition engine is achieved.

The application discloses an engine combustion control method, and relates to the technical field of engine control, which comprises the following steps: obtaining a current intercooled mixture temperature at an outlet of an intercooler; when the current intercooled mixture temperature is less than a preset temperature threshold, controlling engine coolant to flow into the intercooler through a heating passage to heat the mixture in the intercooler by using the engine coolant; determining a target ignition angle corresponding to the current intercooled mixture temperature from a preset mapping relationship between the intercooled mixture temperature and the ignition angle based on the current intercooled mixture temperature; and controlling an ignition device to perform an ignition action based on the target ignition angle. The application actively heats the low-temperature mixture by using the engine coolant and synchronously corrects the ignition angle, thereby improving the mixture atomization quality and the combustion rate under a low-temperature working condition, improving the combustion stability, and improving the thermal efficiency of the engine.

An efficient gas stove fire cover structure comprises an outer ring fire cover and a center fire cover, and outer ring inclined fire spraying holes and outer ring vertical fire holes are formed in the outer ring fire cover; inner ring inclined fire spraying holes and inner ring vertical fire holes are formed in the central fire cover; the outer ring inclined fire spraying holes and the inner ring inclined fire spraying holes are arranged in an outwards inclined manner at an angle of 45-60 degrees; the outer ring vertical fire holes and the inner ring vertical fire holes spray flames upwards in the vertical direction. The multi-layer fire ring has the advantages that the multi-layer fire ring covers more combustion areas, and the pot bottom is heated more comprehensively and evenly. And the inclined fire spraying holes and the vertical fire holes are mutually coordinated and matched, so that gas is more fully mixed, the combustion rate is improved, and remarkable energy-saving and environment-friendly effects are achieved.

The invention discloses a spark-ignition type methanol engine with low pollutant emission, which relates to the technical field of methanol engines, and comprises four groups of engine cylinders, a vaporizer is mounted on each group of engine cylinders, the back of each engine cylinder is connected with an exhaust pipe, a liquid adding pipe is mounted on the outer side of each vaporizer, and the spark-ignition type methanol engine further comprises a fuel pressurizing assembly, the piston is arranged on an engine cylinder; the fuel pressurizing assembly comprises a combustion chamber, the combustion chamber is located in the middle of the engine cylinder, a piston part is slidably connected into the combustion chamber, a hot fire head is fixed to the top of an inner cavity of the engine cylinder, a first gas conveying pipe is fixed into the engine cylinder, and the top of the first gas conveying pipe communicates with a fixing barrel. And the top of the fixing barrel communicates with a second gas conveying pipe, a one-way valve is fixed to the top of the inner wall of the fixing barrel, a second notch is formed in the engine air cylinder, methanol is pressurized, sufficient combustion can be promoted, and then emission of pollutants is reduced.

The utility model provides a kind of coal powder conveying preheating device, comprising: pneumatic conveying pipeline, the pneumatic conveying pipeline is connected to blast furnace;Hot air source, the pneumatic conveying pipeline is connected with hot air source;Air pump, the air pump is arranged on pneumatic conveying pipeline, the air pump is arranged between hot air source and blast furnace;Screw feeder, the discharge port of screw feeder is connected with pneumatic conveying pipeline, discharge port is arranged between air pump and blast furnace, the feed inlet of screw feeder is connected with coal powder bin, and heat exchange module or heating module is arranged outside screw feeder.Further, heat exchanger is arranged outside the screw feeder, and hot air or blast furnace waste gas is circulated in the heat exchanger.The coal powder conveying preheating device provided by the utility model can directly heat coal powder, ensure the temperature of coal powder during pneumatic conveying, improve the heating effect of coal powder during pneumatic conveying and improve the combustion rate of coal powder in blast furnace.

The utility model relates to combustion equipment technical field provides a kind of gas-solid dual combustion furnace system, and the system includes boiler body, biomass gasifier, biomass carbon conveying device and feeding device.The utility model provides gas-solid dual combustion furnace system, by being provided with gaseous combustion system with low-value fuel burner and solid combustion system with fire grate in boiler body;And setting biomass gasifier to pyrolysis gasification biomass fuel, make biomass fuel into biomass gas and biomass carbon;Biomass gas is guided into gaseous combustion system with low-value fuel burner and burns, and biomass carbon is conveyed to solid combustion system with fire grate and burns, realizes the gas-solid dual combustion of biomass fuel;Make biomass fuel can be combusted fully, and burnout rate is high, avoid energy waste, and ash solid waste is easier to handle, and investment and operating cost are low.

The invention relates to the field of energetic materials, in particular to an implementation method of a high-burning-rate compound. The molecular formula of the high-burning-rate compound is C6H16N2 (NH4) (ClO4) 3, compared with DAP-4, the distance between C-O and N-O of the high-burning-rate compound is shorter, and the reduction of the spacing between atoms can aggravate the redox reaction between HDX-1 atoms, so that the burning reaction process is more violent, and the burning rate of the molecular perovskite energetic material is improved. The preparation process is mild in condition, safe, environmentally friendly and easy to amplify, and has a good application prospect in the field of high-burning-rate propellants.

The application provides a novel RNX propellant and a preparation method thereof; the RNX propellant comprises the following A formula or B formula; the A formula comprises the following components in mass fraction: binder: 15-25 parts; plasticizer: 1-10 parts; oxidant: 73 parts; catalyst: 2 parts; the B formula comprises the following components in mass fraction: binder: 15-25 parts; oxidant: 73 parts; catalyst: 2 parts; process aid: 1-10 parts; the application also relates to a preparation method of the aforementioned RNX propellant; the novel RNX propellant prepared by the application adopts a tertiary butyl ferrocene catalyst, the purity of which is greater than or equal to 95%, and the catalytic effect is much higher than that of solid Fe2O3 powder; in addition, the non-volatile liquid catalyst also increases the mass fraction of the binder system, so that the propellant slurry has better fluidity, and the novel RNX propellant has a higher burning rate.

The invention belongs to the technical field of boilers, and particularly relates to a full-premixing steam boiler which comprises a pressure-bearing outer container, supporting legs, a full-premixing device, a boiler cover and a gas drying device. Supporting legs are arranged at the bottom of the pressure-bearing outer container, a full premixing device is arranged in the pressure-bearing outer container, a gas drying device is arranged at the position, located above the full premixing device, in the pressure-bearing outer container, and a furnace cover is detachably arranged at the top of the pressure-bearing outer container. The venturi fan is adopted, negative pressure generated by high-speed airflow is utilized, air is sucked in through the air inlet pipe and then fully mixed with natural gas input into the natural gas inlet pipe, and the mixed gas is discharged into the combustion cavity through the combustor and is ignited and combusted through the ignition system; natural gas and oxygen in air are mixed in advance and then combusted, it is guaranteed that the natural gas can be fully combusted in the later period, and the situation that a large amount of harmful gas is generated due to incomplete combustion of the natural gas and energy waste is caused by insufficient utilization of the natural gas is effectively avoided.

The invention belongs to the technical field of rocket engines, and discloses a double-thrust solid-liquid rocket engine system based on a combustible spoiler and a working method.The double-thrust solid-liquid rocket engine system based on the combustible spoiler comprises the steps that a front-section grain, the four-fan-shaped-hole combustible spoiler and a rear-section grain are sequentially arranged in a combustion chamber shell; the chemical bed component is used for decomposing the injected oxidizing agent, and the four-sector-hole combustible spoiler, the front-section grain and the rear-section grain are combusted under the action of high-temperature and high-pressure gas generated by decomposing the oxidizing agent; the four-fan-shaped-hole combustible spoiler arranged in the combustion chamber channel of the engine can change the original flame layer structure, so that the incoming flow of an oxidizing agent and a fuel pyrolysis product are fully mixed and react, and the combustion efficiency of the engine is improved. The four-fan-shaped-hole combustible spoiler enhances the turbulence effect at the same time, so that the fuel burning speed of the rear section can be increased by several times compared with that of the front section. The device is simple in structure and easy to implement.

The present application relates to propellant technical field, specifically disclose a kind of quick response hydrocarbon propellant and its preparation method, by mass percentage includes composite hydrocarbon fuel: 26~40%;Oxidant: 30~35%;Metal fuel: 8~15%;Binder: 18~23%;Process aid: 0.1~1.6%;Binder is the combination of butadiene rubber and polybutadiene.This hydrocarbon propellant uses butadiene rubber with melting temperature of 80 DEG C as binder matrix and uses liquid PB with molecular weight of 2000~2500 as auxiliary binder, ensure propellant mixing process performance, improve the bonding performance between hydrocarbon fuel system and binder, improve the mechanical properties of propellant;And the present application uses non-polyurethane binder system, solves the problem that polyurethane curing system is cured by environmental humidity, and propellant strength is less affected by environment.