A vertical U-shaped structure oil-fired gas boiler with burner overhead

Abstract

The invention discloses a vertical U-shaped structure oil-fired gas boiler with a burner on the top. The boiler is composed of a drum, a furnace and a convection heating surface; The convection heating surface of the furnace type is composed of 1~n groups of plate-fin evaporator tube bundles and 1~m groups of plate-fin economizer tube bundles and headers connected by side-by-side convection tube panels, convection shaft front, rear walls, side walls and other additional heating The convection heating surface of the water heater is composed of side-by-side convection tube panels connected by 1~n groups of plate-fin tube bundles and headers, the front and rear walls of the convection shaft, and additional heating surfaces such as the walls on both sides; the length of the plate-fin varies with The temperature of the flue gas decreases and increases successively; the high-temperature flue gas generated by the combustion of the present invention first descends in the furnace, passes through the chimney and then turns 180°, scours the convective tube bundle strengthened by plate-fin segments, and then discharges from the rear wall; this type of boiler has a compact structure, Small footprint, high combustion efficiency, and excellent enhanced heat transfer performance.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a vertical U-shaped fuel-fired gas boiler with a top-mounted burner. The structure is suitable for boiler types such as steam boilers and hot water boilers. Background technique [0002] In recent years, with the acceleration of China's urbanization process, the tension and scarcity of land resources have once again become the focus of attention. There is no doubt that the land element has become a major bottleneck restricting the economic development of various regions. How to efficiently use limited land resources is one of the most serious problems faced by all walks of life, especially in the field of large-scale equipment such as boiler equipment, which needs to be adjusted and solved urgently. Nowadays, the oil-fired gas-fired boilers that occupy a large proportion in the market have traditionally low compact structure, large footprint, and low utilization rate of ...

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Problems solved by technology

[0003] 1) When the fuel gas boiler is arranged horizontally and horizontally, the heating surface can only be arranged front and back, which occupies a large area and the land cost is expensive

[0004] 2) For traditional oil-fired gas boilers, when the flue gas flows through the heating surface at the tail of the flue, only the heating surface of the smooth pipe or the threaded smoke pipe is used. The threaded smoke pipe hardly increases the heat transfer area, but only increases the disturbance near the wall surface and enhances the heat transfer capacity. Small, resulting in large metal consumption and bulky structure

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