在蒸气供热系统中,普遍而又严重的问题是凝结水及其二次蒸气大量损失和疏水器漏汽,浪费很多热能和燃料。工厂企业的凝结水回收率一般只有20～40％,这项损失占供热量的11～19％,其中二次汽未利用造成的损失占3～5％。疏水器实际漏汽率更大,仅按热动力式疏水器的正常漏汽率3％计,蒸气供热系统的热损失一般达14～22％。 In steam heating systems, a common and serious problem is the large loss of condensate and its secondary vapors and steam leakage from the steam traps, wasting a lot of heat and fuel. The recovery rate of condensate from factory enterprises is generally only 20 to 40%. This loss accounts for 11 to 19% of the heat supply, and the loss caused by the non-use of secondary steam accounts for 3 to 5%. The actual steam leakage rate of the steam trap is greater, and the heat loss of the steam heating system is generally 14% to 22%, based only on the normal steam leakage rate of the thermodynamic steam trap of 3%.