Core Tip: The spool stainless steel bellows of the bellows trap is filled with a liquid whose vaporization temperature is lower than the water saturation temperature. The valve switch is controlled according to the change of steam temperature. The valve is provided with an adjusting bolt, and the use temperature can be adjusted as needed. Generally, the subcooling adjustment range is lower than the saturation temperature of 15 ° C to 40 ° C.
When the device is started, the pipeline is cooled and condensed, the liquid in the bellows is in a condensed state, and the spool is in the open position under the spring force of the spring. When the temperature of the condensate gradually rises, the filling of the bellows begins to evaporate and expand, the internal pressure increases, and the deformation is extended, which drives the spool to move in the closing direction. Before the condensed water reaches the saturation temperature, the trap begins to close and is controlled with the change of the steam temperature. Valve switch, steam blocking and drainage.
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Tag: bellows trap
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