200MW汽轮机组低真空复合通风快速冷却汽缸的实践

Fast cylinder cooling by low vacuum compound ventilation for 200 MW power generators

200MW汽轮机组停机后自然冷却时间长,影响机组检修的有效工作时间,降低了机组的可用率和电网的灵活性。为了缩短机组汽缸的冷却时间,可以采用快速冷却来强制缩短停机后汽缸温度的冷却时间。根据某电厂200MW汽轮机现有设备技术条件,介绍了低真空复合通风快速冷却的方法。试验证明,此方法既安全又经济,操作简单,能够有效缩短机组的冷却时间。

The fast cylinder cooling through low vacuum compound ventilation using the existing facilities and techniques in use at a power plant to reduce the cylinder cooling time for 200 MW turbine power generators after shutdown is detailed.Tests proved that this method is safe and economic,simple to use,and can be used to effectively reduce power generator cooling time.