Have the combustion chamber cover cap that strikes the water conservancy diversion cooling tube

The utility model provides a have the combustion chamber cover cap that strikes the water conservancy diversion cooling tube, the cover cap contains the shell and is provided inside main burner and the nozzle on duty of shell, the cap is coaxial arranges with the cover for nozzle on duty, and a plurality of main burner circumference are arranged at nozzle on duty peripherally, the main burner includes main burner straight section and main burner changeover portion, nozzle on duty includes nozzle straight section on duty and nozzle on duty expansion section, be equipped with preceding baffle, backplate and a plurality of air intlet on the shell respectively. Every air intlet department inside at the shell is provided with impact water conservancy diversion cooling tube, and should strike the water conservancy diversion cooling tube can be with the concentrated nozzle on duty expansion section of being heated more seriously of guiding into of cooling gas to extension cooling gas is at the dwell time of nozzle on duty expansion section, in addition, set up the transpiration cooling hole in nozzle on duty expansion section, further improved cooling efficiency.