Boiler flue gas waste heat water tank

Abstract

The invention discloses a boiler flue gas waste heat water tank. The boiler flue gas waste heat water tank is characterized by comprising a shell; an inner cavity of the shell is divided into an upper portion, a middle portion and a lower portion; the upper portion is divided into a gas inlet cavity and a gas outlet cavity; the middle portion is a water tank, and the lower portion is an flue gas channel; the water tank is internally provided with a plurality of heat dissipation ventilation pipelines, and the gas inlet cavity and the gas outlet cavity of the upper portion are communicated with the flue gas channel of the lower portion through the heat dissipation ventilation pipelines; a water inlet is arranged at the upper portion of the water tank, and a water outlet is arranged at the lower portion of the water tank; exhaust openings are arranged at the upper end of the water tank; an ash discharging opening is arranged on the wall of the flue gas channel of the lower portion of the inner cavity of the shell; and the water tank is provided with a liquid level gauge and a thermometer. Normal temperature water in the water tank is heated by means of flue gas waste heat of a boiler; the flue gas waste heat is utilized, fuel is saved as well; meanwhile, steam temperature fluctuations are reduced; and the water tank is simple in structure, low in cost and high in flue gas waste heat utilization rate and good in energy-saving and consumption-reducing effect.

Description

Technical field [0001] The invention relates to a water tank device, in particular to a boiler flue gas waste hot water tank. Background technique [0002] When fuel is used to heat the boiler, flue gas will definitely be generated. According to calculations, the temperature of flue gas is usually as low as about 160℃. Existing boilers often directly discharge this high-temperature flue gas into the air directly, without such high temperature. The waste heat is used, causing waste; on the other hand, when water is supplied to the boiler, cold water is directly pumped into the boiler through a water pump, which reduces the temperature of the boiler water, so that the temperature of the steam drops and the steam temperature fluctuates; at the same time, The boiler water after adding cold water is heated to the required temperature, and more fuel is needed. Summary of the invention [0003] The purpose of the present invention is to address the shortcomings of the prior art and prov...

AI Technical Summary

Problems solved by technology

[0002] When heating the boiler with fuel, flue gas will be generated. According to calculations, the temperature of the flue gas is usually as low as 160°C. Existing boilers often directly discharge this high-temperature flue gas into the air without reducing the high temperature. Waste heat is used to cause waste; on the other hand, when replenishing water to the boiler, the cold water is directly pumped into the boiler through the water pump, which reduces the temperature of the boiler water, makes the temperature of the steam drop, and the temperature of the steam fluctuates; After adding cold water, the boiler water needs to be heated to the required temperature, and it also needs to consume more fuel

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