When water is heated, it generates a tasteless, odorless, and colorless (invisible) gas. In daily life, boiling water in a kettle generates steam…
When the condensate in the equipment and pipeline is discharged to the atmosphere or low-pressure area through the steam trap, the boiling point is also reduced due to the sudden decrease in pressure, so part of the condensate evaporates again due to the pressure reduction effect. The steam generated in this way is called secondary steam.
The characteristics of various types of steam traps are shown in the following table according to their working principles…..
Utilize the specific gravity difference between steam and condensate, and use buoyancy to control the opening and closing of the valve…
Utilize the temperature difference between steam and condensate, and use the characteristics of the internal temperature sensing element (bimetallic strip or diaphragm box) to discharge the condensate at a set temperature…
According to the Nuber force law and the physical characteristics of steam and condensate, the dynamic and static pressure acting on the valve plate is changed by discharging condensate, so that the steam trap performs the opening and closing valve action.
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