11 results about "Micro-combustion" patented technology

The invention relates to the technical field of industrial automation control, in particular to a torch self-adaptive combustion optimization method and system. Acquiring multi-modal physical characteristic data of torch flame; dynamically constructing a torch combustion digital twinborn model by combining environment dynamic factor data, torch device state data and multi-mode physical characteristic data; predicting the transient concentration of key pollutants in the torch emissions based on a torch combustion digital twinborn model; according to the predicted transient concentration of the key pollutants, a hydrodynamic intervention strategy for the micro combustion area is generated; and based on a fluid dynamic intervention strategy, a fluid regulation and control execution mechanism arranged in the torch head is controlled, and transient fluid dynamic intervention is carried out on the microcosmic combustion area. The problems of insufficient combustion and high pollution emission of a traditional torch system can be solved.

The invention provides a method for regulating and controlling crystallization of a cesium-lead-bromine-based optical active layer by using low-ignition-point nanocrystalline, and the method comprises the following steps: taking P-type low-ignition-point nanocrystalline cuprous thiocyanate as a modifier of an optical active layer-carbon electrode interface, so that the extraction and transmission efficiency of current carriers can be remarkably improved; the cuprous thiocyanate nanocrystals are embedded in the cesium-lead-bromine-based optical active layer in a form of gradient distribution from top to bottom to form a gradient hybrid film. The characteristic that cuprous thiocyanate is flammable at low temperature is utilized, micro-combustion occurs in the high-temperature annealing process, the generated micro-flame melting effect can induce grain boundary reconstruction and grain recrystallization, and therefore crystallization of the cesium-lead-bromine-based optical active layer is regulated and controlled. The embedding of the cuprous thiocyanate effectively improves the crystallinity of the cesium-lead-bromine-based optical active layer, the large-grain cesium-lead-bromine-based hybrid optical active layer is successfully prepared, and the stable and efficient carbon-based CsPbBr3 perovskite solar cell is assembled.

The present invention discloses a combustion chamber head, a combustion chamber, and a gas turbine, relating to the technical field of aero gas turbines. The combustion chamber head includes a body, on which a plurality of micro combustion holes are provided. The air flow channels of the micro combustion holes penetrate through the body. The upstream of the air flow channels of the micro combustion holes is a contraction section, and the downstream is an expansion section; a conveying pipeline for supplying hydrogen fuel to the micro combustion holes; and a plurality of nozzles, which correspond to the micro combustion holes one by one. The nozzles are close to the outlets of the corresponding micro combustion holes and connect the conveying pipeline with the micro combustion holes. The plurality of micro combustion holes achieve micro hole lean combustion, which can increase the contact area between fuel and air and reduce the emission of NOX. The air flow channels of the micro combustion holes adopt a shape of first contraction and then expansion. By utilizing the fluid flow characteristics, enough space is left for the recirculation zone, effectively preventing flashback.

This invention relates to a micro-pulsating burner for gaseous fuels, comprising a micro-burner, an air intake pipe, a gas intake pipe, an electric spark hexagonal nut, and an outer electrode for the electric spark. The micro-burner consists of a front cover, a cylindrical combustion chamber, and a tailpipe. Gaseous fuel is introduced into the combustion chamber through the gas intake pipe and, under electric spark ignition, mixes and burns with air introduced through the air intake pipe. The resulting high-temperature, high-pressure gas is ejected from the tailpipe. The micro-pulsating burner of this invention offers advantages such as stable combustion position, complete combustion, reliable pulsed combustion, fast combustion speed, short combustion time, high intensity, low heat loss, and high thermal efficiency, making it promising for application in micro-energy systems.

The present application relates to the technical field of aero-engine testing, and specifically relates to a micro combustion chamber outlet measuring device, which comprises: a casing assembly, which comprises an inner casing and an outer casing that are sleeved and installed, a cooling interlayer is reserved between the inner casing and the outer casing, a gas passage is formed in the inner side of the inner casing in the axial direction, an installation notch is arranged on the inner casing, and a combustion chamber test piece is adapted to be fixedly installed at the installation notch; a measuring driving mechanism is fixedly installed on the outer casing, a rotary measuring assembly is installed on the driving end of the measuring driving mechanism, the rotary measuring assembly is installed at the installation notch, the rotary measuring assembly is arranged towards the exhaust port of the combustion chamber test piece, and an overflow gap is reserved at the edge of the rotary measuring assembly and the installation notch. The casing assembly is formed by sleeving the inner casing and the outer casing, the probe lead can be led out from the cooling interlayer. The problem that the cable cannot be arranged due to the narrow outlet flow channel of the micro combustion chamber can be effectively avoided.

This invention relates to a high-temperature, high-pressure micro-combustion device and method for single-particle fuel. The invention comprises a heat-insulating cavity between the combustion chamber body, the heat-insulating shell, and the heat-insulating top plate, sealed with an optical glass window on both sides of the combustion chamber in the middle of the combustion chamber body. An air inlet and an air outlet for the combustion chamber are located within the combustion chamber body. A glass gasket is nested in the middle of the combustion chamber body, and a micro-combustion plate is placed on the glass gasket. A ring-shaped cast copper heating plate surrounds the combustion chamber on the outer side opposite the glass gasket. A high-speed camera, a high-magnification objective lens, and a background light source are located outside the optical glass window. A laser emitted from a laser enters the high-temperature, high-pressure combustion chamber perpendicularly. This invention can more efficiently and easily meet the requirements of high-temperature, high-pressure micro-combustion experiments under a microscope. It is simple to manufacture, highly stable, heat-insulating, and can flexibly address imaging problems in microparticle ignition and combustion experiments, effectively conducting interference-free testing of single-particle micro-combustion under high-temperature, high-pressure conditions.

The application discloses a kind of based on hydrogen combustion and micro needle electrode ignition ultra-high energy density micro engine device and preparation method thereof, belong to micro electro mechanical system and micro energy technology field.The device mainly includes top cylinder shell, bottom cylinder shell, piston, top plug-in unit and bottom plug-in unit.It is in that a pair of opposite micro needle electrode in micro combustion chamber ignites pre-mixed hydrogen / oxygen, generates high-temperature high-pressure gas to push piston to carry out two-stroke reciprocating motion, to convert chemical energy directly into mechanical energy.The device adopts unique combustion chamber flow channel design, combined with the flow divider on piston, effectively optimizes scavenging process, reduces fuel short circuit, improves gas exchange efficiency.

The invention discloses a furnace combustion scene digital holographic intelligent control organization combustion system, which comprises a measurement module configured in a hearth and at a combustor air inlet / powder inlet pipeline, a secondary air duct and an over-fire air duct, and used for performing high-precision and real-time measurement on key physical parameters in a hearth combustion scene, comprising a combustor thermal kinetic energy measuring sensor, a primary air powder flow state and property parameter measuring sensor and a secondary air and over fire air measuring sensor. And the data processing and modeling module is electrically connected to the measurement module and is used for receiving and processing mass real-time data from the measurement module. The invention relates to the technical field of intelligent combustion control and process optimization. According to the furnace combustion scene digital holographic intelligent control organization combustion system, by constructing the furnace combustion scene digital holographic intelligent control organization combustion system, the inherent limitation of an existing hearth combustion control system in the aspects of microcosmic combustion state perception, refined regulation and control and dynamic response is successfully overcome.

The invention discloses a countercurrent double-channel V-shaped fin array micro-combustor and a power generation device thereof, and relates to the technical field of micro energy conversion, and the micro-combustor comprises countercurrent double channels and V-shaped fins arranged in the countercurrent double channels in an array; the countercurrent double channels are two separated combustion chamber channels with opposite air inlet directions, and the V-shaped fins are periodically arranged in a Z shape to form a vortex disturbance area. The power generation device comprises the micro-combustor, a thermoelectric conversion module and an efficient heat dissipation assembly. According to the combustor, the initial temperature of reactants entering the combustor is increased by arranging the countercurrent double channels, and the heat loss in the combustion reaction is effectively reduced; by arranging the V-shaped fin array structure, airflow is effectively guided to form local vortexes, the mixing efficiency of fuel and air is improved, the flame falling and blow-out phenomena are restrained, the combustion reaction is balanced, the flame position is anchored, a high-temperature stable heat source is provided for the thermoelectric ceramic module, and the efficient energy supply requirement in a micro-power scene is met.

The application discloses a counterflow double-channel V-shaped rib array micro-combustor and a power generation device thereof, relates to the technical field of micro energy conversion, and the micro-combustor comprises a counterflow double-channel and V-shaped ribs arranged in an array in the counterflow double-channel; the counterflow double-channel is two combustion chamber channels with opposite gas inlet directions and is separated; the V-shaped ribs are arranged in a Z-shaped cycle and form a vortex disturbance region. The power generation device comprises the micro-combustor, a thermoelectric conversion module and a high-efficiency heat dissipation assembly. The application improves the initial temperature of reactants entering the combustor by arranging the counterflow double-channel, effectively reduces the heat loss in the combustion reaction, effectively guides the airflow to form a local vortex by arranging the V-shaped rib array structure, improves the mixing efficiency of fuel and air, suppresses the flame shedding and blowout phenomenon, balances the combustion reaction and anchors the flame position, provides a high-temperature stable heat source for the thermoelectric ceramic module, and meets the efficient energy supply demand under the micro power scene.

The application relates to the technical field of micro-scale combustion, in particular to a micro combustion chamber with a regenerative structure. The micro combustion chamber with the regenerative structure is used for a gas turbine and comprises a fluid passage, the fluid passage can circulate air and fuel, the fluid passage is provided with an outer exhaust passage, an outer ring cavity, a flame tube inner cavity, an inner ring cavity, an inner exhaust passage and a fuel gas collecting cavity, the air flows into the flame tube inner cavity through the outer ring cavity and the inner ring cavity in sequence, the fuel can flow into the flame tube inner cavity through the fuel gas collecting cavity, the air and the fuel are combusted in the flame tube inner cavity to form high-temperature fuel gas, and the high-temperature fuel gas flows into the outer exhaust passage through the inner exhaust passage; the high-temperature fuel gas in the inner exhaust passage and the flame tube inner cavity can exchange heat with the air in the inner ring cavity, and the high-temperature fuel gas in the outer exhaust passage and the flame tube inner cavity can exchange heat with the air in the outer ring cavity. In this way, the air is preheated by the high-temperature fuel gas, the total heat cycle thermal efficiency is improved, and the combustion chamber performance is improved.