Center furnace liner L-shaped guide pipe vertical gas boiler

Abstract

The invention discloses a center furnace liner L-shaped guide pipe vertical gas boiler. The center furnace liner L-shaped guide pipe vertical gas boiler comprises a combustor, a cylinder, a furnace liner, L-shaped guide pipes, smoke collecting boxes, smoke pipes, a spiral guide piece, smoke transfer chambers, a water inlet pipe, a water outlet pipe, a smoke discharge pipe, a support pipe and a base, and is characterized in that the combustor is positioned at the top end of the vertical boiler cylinder; the furnace liner is positioned in the center position of the vertical boiler; multiple L-shaped guide pipes are arranged in the furnace liner, and form a center radial shape; the upper ends of the L-shaped guide pipes penetrate through the wall surface of the middle part of the furnace liner to weld with the wall surface, and the lower ends penetrate through a baseplate of the smoke transfer chamber to weld with the baseplate; the smoke pipes are arranged around the furnace liner; the smoke collecting boxes are respectively connected to the upper ends of the smoke pipes and the furnace liner; and the smoke transfer chambers are respectively connected to the lower ends of the smoke pipes and the furnace liner. Smoke radially exchanges heat with the furnace liner and the L-shaped guide rails to increase the radial heat exchange area; and furnace water in the L-shaped guide pipes is heated to quickly flow upwards, so that the natural convection heat exchange of the furnace water is reinforced, and the circulation of water in the furnace is quickened. The boiler is compact in structure, larger in heat exchange area and higher in heat efficiency.

Description

technical field [0001] The invention relates to a vertical gas boiler, in particular to a vertical gas boiler with an L-shaped duct in a central furnace. Background technique [0002] The furnace of the vertical hot water boilers available on the market today is generally set at the lower part of the boiler, the furnace space is relatively narrow, the gas emitted by the burner is limited by the space of the furnace, the shape of the flame cannot be fully expanded, and the combustion is insufficient. The gas is discharged before it is completely burned, and the heat energy loss is relatively large. The internal water circulation mode of the boiler is natural convection, the heat transfer area is small, and the water circulation rate in the furnace is low, resulting in poor convective heat transfer effect. In addition, traditional vertical gas-fired boilers mostly have a fire tube single-return structure, which has problems such as short flue gas flow, small heat transfer are...

AI Technical Summary

Problems solved by technology

[0002] The furnace of the vertical hot water boilers available on the market today is generally set at the lower part of the boiler, the furnace space is relatively narrow, the gas emitted by the burner is limited by the space of the furnace, the shape of the flame cannot be fully expanded, and the combustion is insufficient. The gas is discharged before it is completely burned, and the heat energy loss is relatively large

The internal water circulation mode of the boiler is natural convection, the heat transfer area is small, and the water circulation rate in the furnace is low, resulting in poor convective heat transfer effect

In addition, traditional vertical gas-fired boilers mostly have a single-return fire tube structure, which has problems such as short flue gas flow, small heat transfer area of ​​the smoke tube, and low convective heat transfer coefficient of fluid inside and outside the smoke tube, which makes the heat released by fuel combustion Can not be fully absorbed, resulting in high boiler exhaust gas temperature and low boiler thermal efficiency

Images