7results about How to "Improve combustion stability" patented technology

The utility model belongs to the combustion technical field, specifically discloses a kind of fire, combustor and gas hot water equipment.Fire includes inner shell and inner core piece.Inner shell is surrounded and is formed with the first injection passage and first gas passage of intercommunication, and the upper portion of inner shell has two rectifier vertical board parts that are relatively arranged and spaced apart in width direction;Inner core piece is inserted in the upper portion of first gas passage and has two rectifier board parts that are relatively arranged and spaced apart, and vertical intermediate flow passage is formed between two rectifier board parts, and the lower portion of each rectifier board part is formed with core plate profile stamping in the direction away from each other, and core plate profile stamping is vertically arranged and is in contact with rectifier vertical board part of corresponding side, and the upper end of core plate profile stamping is spaced apart with rectifier board part to form air vent, and the upper portion of each rectifier board part is formed with side flow passage with upper open between rectifier vertical board part, and side flow passage is communicated with air vent of corresponding side.The utility model can reduce the processing difficulty of fire, improve the stability of combustion.

This invention provides a waste pyrolysis gas combustion device and its combustion method, belonging to the field of waste treatment technology. The invention includes: a shell, foam ceramic balls, a central tube, a preheater, a mixing tube, a co-firing air sleeve, and a flow-dispersing component. This invention uses foam ceramic balls as a heat storage carrier in conjunction with a preheater to achieve stable ignition of pyrolysis gas with low calorific value fluctuations, effectively adapting to the combustion requirements of waste pyrolysis gas with low calorific value and parameter fluctuations, and improving combustion stability. The flow-dispersing component in the mixing tube enhances gas-gas mixing, improving combustion efficiency and pollutant control, increasing combustion completeness, reducing pollutant generation, and optimizing combustion efficiency. The compact structure of the nested central tube and mixing tube with annular slot air intake achieves efficient space utilization and integrated application, realizing precise gas distribution and efficient mixing within a limited space. The overall layout of the device is compact and easy to integrate.

This invention discloses a combined power cycle system and method for cooling incoming air using ammonia-water, relating to the aerospace field. The system can switch between turbine-ramjet operating modes through an adjustable structure. Particularly during turbine-ramjet switching, ammonia-water is used to cool the high-temperature incoming air in the intake duct. The absorbed ammonia-water is then distilled to separate high-temperature ammonia gas and water. This invention combines heat exchanger precooling and jet precooling, effectively increasing the pressure ratio of the fan and compressor through multiple air cooling processes. This improves the compressor outlet gas temperature, thereby reducing compressor power consumption and providing greater thrust. Ammonia, as a supplementary fuel, has a higher specific impulse, addressing the thrust gap during engine mode transitions and effectively widening the operating speed range of the turbine engine.

This invention relates to the field of supersonic inlet start-up and active flow control technology, aiming to solve the problems of inlet flow separation, shock wave boundary layer interference, and start-up lag in existing scramjet engines. It provides a miniature supersonic nozzle array device and engine for enhancing inlet start-up. The miniature supersonic nozzle array device includes a rotating mechanism on which multiple nozzles are mounted, arranged at intervals. The airflow channel inside each nozzle is an acceleration channel, and the airflow channel between two adjacent nozzles is a deceleration channel. The acceleration channel is sequentially divided into an acceleration channel inlet section, a central contraction section, and an acceleration channel outlet section along the gas flow direction. The cross-sectional size of the central contraction section is smaller than that of the acceleration channel inlet section and the acceleration channel outlet section. This invention effectively solves the problems of shock wave boundary layer interference, flow separation, and start-up lag at the inlet lip under high Mach number conditions.

This utility model discloses a tangential combustion system for pulverized coal boilers suitable for low-volatile coal types. It includes a boiler body, an air preheater, a secondary air fan, a primary air fan, and multiple coal mills. Each coal mill outlet is connected to multiple pulverized coal pipes. All pulverized coal pipes are connected to pulverized coal burners on the boiler body. Each pulverized coal burner is equipped with a burner air box. The secondary air fan outlet is connected to the burner air box via the air preheater. The primary air fan outlet is divided into two paths: one path connects to the hot primary air duct after passing through the air preheater, and the other path directly connects to the inlet of the hot primary air duct. The hot primary air duct outlet is divided into two paths: one path directly connects to the inlet of each coal mill, and the other path connects to the pulverized coal pipe at the outlet of each coal mill via a bypass hot primary air duct. This utility model can significantly increase the initial temperature of pulverized coal entering the furnace, improving the ignition and stable combustion capabilities of low-volatile coal.

The application relates to a heat management system and a hybrid automobile, and belongs to the technical field of automobiles. The heat management system comprises a water-cooling heat dissipation circuit, the water-cooling heat dissipation circuit comprises a first water pump, an electric drive component and a radiator which are connected in sequence to form a circulation through pipelines; an engine intake circuit, the engine intake circuit comprises an engine and a supercharger, and a water-cooled intercooler is connected in series on an intake pipeline between the supercharger and the engine; an intercooled heat exchange branch, the intercooled heat exchange branch is connected in parallel with the water-cooling heat dissipation circuit and exchanges heat with the engine intake circuit through the water-cooled intercooler, and a valve and a second water pump are connected in series on the intercooled heat exchange branch. The water-cooled intercooler is connected to the water-cooling heat dissipation circuit through the intercooled heat exchange branch, the valve opening degree and the second water pump duty cycle are adjusted, the temperature of the air after intercooling is controlled in real time, the problem of condensate water condensation and accumulation in the intake pipeline is solved, the engine combustion stability is improved, and the vehicle power is ensured.

The invention provides a pulverized coal burner assembly applying the coanda effect and a pulverized coal burning device with the coanda effect, and the pulverized coal burner assembly comprises a plurality of burners which are arranged around a preset axis at intervals, and the connecting line between the center point of an outlet of each burner and the preset axis is a preset connecting line; the included angle between the outlet axis of the combustor and the preset connecting line is an acute included angle, and a vertical plane passing through the outlet axis of the combustor is a preset plane; the guide part is arranged on the side wall of at least one combustor and located on the fire facing side of the combustor, and the distance D1 between the first side of the guide convex curved surface and the outlet axis of the combustor is smaller than the distance D2 between the second side of the guide convex curved surface and the outlet axis of the combustor. According to the technical scheme, the problem that in the prior art, the pulverized coal combustion stability is poor under the low-load condition can be effectively solved.