2results about How to "Reduce local high temperature" patented technology

The present application relates to the technical field of burner, provide a kind of wall self-preheating low-nitrogen high-efficiency burner, comprising: shell, with the burner air duct fire pan brick of fixed connection of shell, the nozzle gun body is installed in the center of shell, the burner air cover is installed outside the shell, the nozzle gun body center is installed with fuel pipe, the fuel pipe is sequentially provided with nozzle ring, swirl vane and grid angle column, the nozzle ring is slidably connected with fuel pipe, the grid angle column is fixedly connected with fuel pipe, and the special nozzle is installed at one end of fuel pipe in burner air duct fire pan brick;The present application is provided with heat exchange turbulence conductor in burner air cover, and combustion-supporting air is self-preheated.

The application discloses a novel fuel regenerative cooling structure of a combined nozzle, which comprises a curved section and straight pipe sections; one side of the straight pipe sections is configured as an inlet far from one end of the curved section, and the other side of the straight pipe sections is configured as an outlet far from the other end of the curved section; an upper pipe heating channel and a lower pipe heating channel are formed in the cooling structure; and a communication hole for connecting the upper pipe heating channel and the lower pipe heating channel is arranged at the curved section. The cooling structure is provided with the communication hole for connecting the upper and lower pipe heating channels, and the improved U-shaped structure of the liquid collecting cavity, which effectively alleviates the uneven flow distribution phenomenon of the curved parallel channels of the nozzle wall surface, reduces the local high temperature of the nozzle wall surface, effectively reduces the average temperature of the nozzle wall surface, avoids the nozzle damage caused by the local over-temperature, and meanwhile, the fuel temperature entering the combustion chamber is increased, the small molecular substances generated by the fuel cracking are easy to be atomized, and the combustion efficiency is improved.