Vacuum phase change boiler exhaust system and exhaust method

Abstract

The invention relates to a vacuum phase change boiler exhaust system and an exhaust method. The vacuum phase change boiler exhaust system comprises a boiler body, the boiler body is provided with an exhaust port; the exhaust port is connected with a gas storage box through an air extraction pipeline, the gas storage box is connected with an air extraction device through an exhaust pipeline, a first valve and a second valve are arranged on the air extraction pipeline, and a third valve is arranged on the air exhaust pipeline. The invention further discloses an exhaust method of a vacuum phase change boiler. According to the vacuum phase change boiler exhaust system and the exhaust method, on one hand, water vapor and non-condensable gas can be highly separated; the pressure of water vapor in the extracted gas is reduced, the influence on an air extracting device is avoided, the non-condensable gas is rapidly extracted through the exhaust system and the exhaust method, the air extractingeffect is remarkable; and on the other hand, normal work of the boiler cannot be affected in the air extraction process, and the working efficiency is greatly improved.

Description

technical field [0001] The invention relates to a vacuum phase change boiler, in particular to a vacuum phase change boiler exhaust system and an exhaust method. Background technique [0002] The vacuum phase change boiler forms a negative pressure vacuum environment inside the closed furnace body, fills the heat medium water (solution) in the body, heats the heat medium water by combustion or other means, and then evaporates and condenses the heat medium water to the heat exchanger. On the heater, the heat exchanger is used to heat the water that needs to be heated. [0003] The heat medium water in the vacuum phase change boiler is an aqueous solution that has undergone special treatment such as descaling and anticorrosion. No replenishment or replacement is required during the life of the unit. Therefore, the inside of the vacuum boiler body will never be scaled or corroded, and its normal service life can reach more than 20 years, which is far beyond the 10-year servic...

AI Technical Summary

Problems solved by technology

[0009] If the method of reducing the temperature of the heat medium aqueous solution is used to pump air, although the water vapor partial pressure is reduced, because the gas solubility increases with the temperature drop, the non-condensable gas dissolves and it is difficult to escape the liquid surface, especially the dissolved gas in the lower layer of the solution. , because of the liquid surface pressure, it is more difficult to escape and pump out

Overall, the pumping is still not great

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