Water collecting box and industrial natural gas exhaust heat exchanger

Abstract

The invention discloses a water collecting box and an industrial natural gas exhaust heat exchanger, and relates to the field of industrial energy-saving heat-exchange equipment. The water collectingbox provided by the invention comprises a cover plate and a box body, the box body comprises a bottom wall and a side wall arranged on the bottom wall, the bottom wall and the side wall define a cavity with an opening, the cover plate is connected with the box body, the opening is sealed, the cover plate is provided with a plurality of water inlets communicating with the cavity, the bottom wall isprovided with a water outlet communicating with the cavity, and the inner wall of the cavity is provided with a turbulent flow part. The invention also provides an industrial natural gas exhaust heatexchanger including the water collecting box. The water collecting box and the industrial natural gas exhaust heat exchanger can reduce the noise of the inner wall of the cavity and can achieve the aim of even mixing. At the same time, it can also ensure the water pressure in the cavity is stable, the condition that the connecting position of the cover plate and the box body is pulled to be cracked due to uneven equipment pressure bearing caused by sudden water pressure change is avoided, and explosion possibly formed by water leakage and dry burning is avoided.

Description

technical field [0001] The invention relates to the field of industrial energy-saving heat exchange equipment, in particular to a water collection box and an industrial natural gas tail gas heat exchanger. Background technique [0002] The exhaust gas temperature of thermal energy and power equipment such as ordinary natural gas boilers, power plant boilers, gas turbines, and industrial boilers is between 150 and 1000 degrees, and the exhaust heat loss accounts for 30%-70% of the total energy consumption of the equipment, resulting in energy waste and environmental damage pollute. The gas condensing heat exchanger can reduce the exhaust gas temperature to below the dew point temperature, which not only recycles the sensible heat of the flue gas, but also more efficiently utilizes the latent heat released when a large amount of water vapor is condensed by the combustion of natural gas (about chemical heat 11%), so that the low calorific value efficiency of equipment gas util...

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Problems solved by technology

[0003] Traditional industrial heating equipment does not have a water collection box at the end of the water, and only uses snake-shaped connecting pipes to weld the pipes. The disadvantage of this traditional manufacturing method is that when the water flow is uneven, there is no place for mixing water, and where does the water pass first? No pipe, whichever pipe will come out of the water first, this design is not conducive to the uniform passage of water, if a certain water pipe is blocked and the water flow is small, it will cause dry combustion of the equipment, and the result of dry combustion will cause the equipment to explode

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