Manufacturing method of exhaust steam heating system of steam turbine wet cooling unit

1. This technology relates to the field of steam turbine wet cooling units, in particular to an exhaust steam heating system of a steam turbine wet cooling unit.

Background technique:

2. With the rapid development of urban central heating, the energy saving and environmental protection benefits of cogeneration units have gradually received attention.

3. The low-temperature exhaust steam of the steam turbine is recovered and used its heat through the circulating water, which can increase the heating capacity of the system by more than 20 percent . Therefore, for the wet-cooled unit, it is a good way to use the steam turbine low-pressure cylinder double-rotor interchange circulating water heating technology Effective way, but this method is difficult to efficiently use low-pressure exhaust steam heat to heat the circulating water, resulting in a large amount of exhaust steam heat being lost to the cooling water, which not only wastes exhaust steam heat, but also reduces the utilization rate of exhaust steam heat. , The heat loss of exhaust steam from wet-cooled units in thermal power plants accounts for about 50 percent of the total input energy consumption of the system, which makes the economy worse.

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