Problems with the strainer
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There is a component in float-type steam traps called an Air vent capsule. Does anyone know what its function is?
Give me a diagram, show me the structure?
Since the float-type steam trap operates on the principle of the difference in density between steam and condensed water, it is unable to distinguish between steam and air. If air is not removed in time, the steam trap will become air-locked. Therefore, a float-type steam trap is equipped with a thermostatic air discharge valve that automatically removes air based on the differences in temperature between steam and mixed gases (steam + air), thereby ensuring the proper operation of the float-type steam trap. This type of air release valve can be the bladder-type you mentioned, or it can be a bimetallic type; both operate based on heat-sensitive elements.
There are a few questions: 1. What is a gas lock? 2. Does the vent hole at the top of the trap need to be opened manually? 3. How does a thermostatic exhaust valve discharge air? Is there a bypass channel used for exhaust?
There are a few questions: 1. What is a gas lock? 2. Does the exhaust vent need to be opened manually? 3. How is the exhaust discharged? There is a bypass (between the steam trap inlet and outlet?) ) Is it vented through here?
A vapor lock occurs because the steam trap is unable to distinguish between steam and non-condensable gases; thus, when the machine starts, air in the steam pipeline reaches the float-type steam trap, which then opens due to the presence of steam, as a result of which the steam trap fails to function properly.
The vent hole at the top of the steam trap can be used to release air; however, this is not safe. Moreover, in situations where the load changes (especially in applications involving intermittent heating), the steam trap often gets trapped by air, which is why a built-in air release mechanism is installed
The fluid-bag type thermostatic air exhaust valve contains a temperature-sensitive element that enables automatic control based on the difference in temperature between pure steam and gas mixtures containing air; details are provided in the attachment
If a trap equipped with a thermostatic drain valve is purchased, the vent port at the top of the trap is intended only for pressure release and testing during maintenance, and is generally not opened.