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Basic composition and working principle of gas steam boiler

2021-06-25 15:58    page view:

Guide: The gas-fired steam boiler is mainly composed of the two main bodies of the shell and the boiler, and the accessories to ensure its safe, economical and continuous operation, instrument auxiliary equipment, automatic control and protection systems, etc. This kind of boiler is a drum-type boiler with a water-cooled wall. Two return pyrotechnic tubes are arranged in the left and right sections of the drum, and the front smoke box at the front of the drum is folded back.

  1. The basic composition of gas-fired steam boiler:

  The gas-fired steam boiler is mainly composed of the two main bodies of the boiler shell and the boiler, and the accessories to ensure its safe, economical and continuous operation, instrument auxiliary equipment, automatic control and protection systems, etc. This kind of boiler is a drum-type boiler with a water-cooled wall. Two return pyrotechnic tubes are arranged in the left and right sections of the drum, and the front smoke box at the front of the drum is folded back. Between the drum and the lower connecting box, there are a downcomer and a water-cooled pipe, which constitute the frame of the combustion chamber. There is a steam-water separator on the upper part of the drum to reduce the water brought out by the steam. The heating surface of the pot body is the lower part of the pot, the water-cooled wall tube and the pyrotechnic tube.

gas steam boiler

  2. Working principle of gas-fired steam boiler:

  The heat released by the combustion of fuel in the gas steam boiler in the furnace heats the water in the boiler to vaporize it into steam. The water in the pot (drum) is continuously heated by the energy released by the combustion of gaseous fuel in the furnace, and the temperature rises and produces pressurized steam. Because the boiling point of water rises with the increase in pressure, the pot is sealed and steam The expansion inside is restricted to generate pressure to form thermal power (strictly speaking, the steam of the boiler is formed by heating water in the drum at a constant pressure to saturated water and then vaporizing), which is widely used as an energy source. This is the basic principle of gas-fired steam boilers.

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