When the device is restarted, a large amount of air accumulates in the radiator. Opening the exhaust gas can discharge these gases as soon as possible, ensuring that the radiator can be well heated during initial operation to avoid large thermal temperatures. stress causing radiator leak. Normal exhaust involves exhausting non-condensable gas from the steam side of the heater to ensure efficient heat exchange.
The main function of the deaerator is to remove oxygen and other non-condensable gases from the boiler feed water to ensure the quality of the feed water. If oxygen is dissolved in water, the metal in contact with the water will be corroded. At the same time, if there is gas accumulation in the heat exchanger, the thermal resistance of heat transfer will increase and the heat transfer effect of the equipment will increase. reduce. Therefore, toAny gas dissolved in water is unfavorable, especially oxygen, which will directly threaten the safe operation of the equipment. Thermal deaeration is used in thermal power plants. The deaerator itself is a hybrid heater in the water regeneration system. At the same time, the high pressure heater is used for dehydration, chemical water replenishment and high pressure dehydration and exhaust with qualified equipment. water quality throughout the plant. It can be fed into the degasser to be used to reduce the loss of steam and water in the power plant. 1. The working principle of headless degasser: After the main condensate (including supplementary water) of the low pressure heater is adjusted by the water inlet regulating valve, it enters the degasser, mixes with other degassers in the degasser and passes through the porous nozzle or tubex ejects to form an umbrella-shaped water film, which performs mixed transfer of heat and mass with the heating steam from bottom to top. The feed water quickly reaches saturation temperature under operating pressure. At present, most of the dissolved oxygen and other gases in water are basically analyzed, thereby achieving the goal of removing oxygen.