Steam and condensate water hammer phenomena
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This post was last edited by Yu Qin on 2021-7-18 at 17:22. During the production process, water hammer phenomena may occasionally occur in the steam system or condensate system. Please discuss and exchange information based on actual production experiences regarding the locations where water hammer occurs, its frequency, causes, and methods for eliminating it.
In the phase change from saturated steam to saturated liquid, the most prominent change is the change in volume. Saturated steam inside equipment pipes or containers will liquefy when it comes into contact with a temperature lower than that at which it is saturated; the volume of this liquid phase decreases by a factor of 800, on average. During this change process, as the volume of this portion decreases, which is reflected in a drop in pressure, an approximately equal amount of steam is added to compensate, thereby maintaining equilibrium in the pressure of the space. When the extremely high replenishment rate of this gas suddenly comes to a halt, an impact sound is produced. This phenomenon is called a \"pneumatic hammer\". (Pure imitation language, for reference only) As for how to avoid it, one must consider the temperature and volume associated with this particular phase change. For example, when steam is introduced into water to heat it, porosity is needed in order to generate numerous gas hammer phenomena with low sound levels. For reference.
What methods are used when the condensate enters the tank? Enter from the top or bottom? Insert at the bottom? Where is the control valve on the pipeline leading into the tank?
Set as needed. I don’t understand the term “condensate entering the tank”. It is best to discuss it in terms of the saturation pressure of the medium’s phase as a function of temperature.