Micro non-premixed combustor suitable for thermal power generation

Abstract

The invention belongs to the technical field of micro-scale combustion and particularly discloses a micro non-premixed combustor suitable for thermal power generation. The micro non-premixed combustorcomprises a cylindrical shell of an inner hollow structure, and a fuel air inlet, an air inlet, a mixing chamber, a combustion chamber and an air outlet which are successively formed in the hollow structure. The fuel air inlet is formed in the air inlet and the fuel air inlet and the air inlet are separated by a cylindrical bushing, a fuel baffle plate is arranged on the side, close to the mixingchamber, of the fuel air inlet, and a gap where gas passes is formed between the fuel air inlet and the fuel gas baffle plate; a partition plate is arranged between the mixing chamber and the combustion chamber, the radial section of the partition plate is as same as that of the hollow structure, and a first through hole and a plurality of second through holes are formed in the partition plate. The micro non-premixed combustor suitable for thermal power generation has the characteristics of being high in flame stability, wide in stable combustion range, fixed in flame position, high in wall temperature distribution consistency and the like.

Description

technical field [0001] The invention belongs to the technical field of micro-scale combustion, and more specifically relates to a micro-sized non-premixed burner suitable for thermal power generation. Background technique [0002] With the rapid development of MEMS technology, many micro-miniature devices and systems have emerged, such as micro-miniature electronic equipment such as micro-satellites, micro-robots, and micro-propulsion systems. Currently, the energy sources of these devices are mainly chemical batteries, however, chemical batteries have low energy density and large volume and weight. Compared with chemical batteries, hydrocarbon fuels have an energy density advantage that is dozens of times higher. For example, the energy density of typical liquid hydrocarbon fuels is about 45MJ / kg, while the energy density of current lithium batteries is about 1.2MJ / kg. kg. Therefore, the development of combustion-based micro-miniature power generation devices has very gre...

AI Technical Summary

Problems solved by technology

[0005] However, due to the instability of non-premixed combustion, the flame position is easy to change with the size of the intake velocity, resulting in changes in the temperature distribution of the outer wall of the combustion chamber, which will affect the thermal photovoltaic and thermoelectric equipment at different power generation (fuel inlet flow) power generation efficiency

Images