What are the components of nature gas & oil dual fuel burner:
There are two main combustion methods for gas boilers. One is the dedicated burning method, that is, the boiler is only equipped with a gas combustion system. At this time, the advantages of the gas boiler in terms of equipment investment and operating economy can be fully reflected; the other is It is a mixed combustion method, equipped with two combustion systems: gas-oil, gas-coal combustion. The boiler can burn gas alone or burn another fuel alone or burn the two fuels together. At this time, it is also called a dual fuel burner. A dual-fuel burner means that there are both gas nozzles and fuel nozzles in the same burner. The air regulator, stabilizer, ignition device, and flame monitoring device of the control part of the dual-fuel burner must be suitable for the requirements of both fuels at the same time.
Composition structure: The dual-material burner is mainly composed of three parts: common parts, fuel parts, and gas parts. Common components: Common components include air pipes, guide vanes used to control the air flow, air branch pipes and refractory fire channels. In addition, there must be a small fire igniter, and its location should be able to reliably position both fuel and gas. The position of the flame detector should be able to detect small fires, main gas flames and fuel (or coal) flames. Installing a much larger gas supply system in the oil burner may interfere with the mixing method of oil combustion. The solution is to arrange the gas inlet outward to the periphery of the burner.
Fuel components:
Mainly oil atomizer. Its function is to make the oil flow separate and distribute the oil mist evenly into the air flow in a controllable manner.
Gas components:
Without exception, the gas components of the dual-material burner adopt the nozzle orifice mixing type. The oil atomizer occupies the center of the stabilization zone of the burner, so the gas components are subject to certain restrictions. Using a detachable nozzle or ring cavity for heating can make it reach the center; but it cannot be used in combination with a rotary cup oil atomizer. In other design styles, as the load increases, the center supply Qi also becomes difficult. Therefore, as mentioned above, the gas is generally introduced through a ring or nozzle arranged between the atomizer and the housing.
classification:
Dual fuel burners can be divided into two categories: assembled burners (including fans and control devices, which are assembled by the manufacturer before leaving the factory) and field assembled burners (burners and controllers are assembled on site, Additional fan). The former is mostly used in fire tube boilers, and the latter is often used in water tube boilers. Generally speaking, dual-fuel burners are developed around existing oil burners. An oil atomizer has been installed on the center line of the burner, and gas must be introduced from the space between the oil atomizer and the housing.
