13results about How to "Increase burn rate" patented technology

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 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.

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 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 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.