The basic function of the steam trap is to discharge the condensed water, air and carbon dioxide gas in the steam system as soon as possible; at the same time, it can automatically prevent the leakage of steam to the maximum extent. There are many varieties of traps, each with different performance. The basic function of the trap is to discharge the condensed water, air and carbon dioxide gas in the steam system as soon as possible; at the same time, it can automatically prevent the leakage of steam to the maximum extent. There are many varieties of traps, each with different performance. When selecting a trap, you should first select its characteristics to meet the best operation of the steam heating equipment, and then consider other objective conditions, so that the trap you need is correct and effective. The steam trap is installed between the steam heating equipment and the condensate return header. When opened, the barrel is at the bottom and the valve is fully open. After the condensate enters the trap, it flows to the bottom of the bucket, fills the valve body, and completely immerses the bucket. Then, the condensed water is discharged to the return water header through the fully open valve. Steam also enters the trap from the bottom of the barrel and occupies the top of the barrel to generate buoyancy. The barrel slowly rises and gradually moves the lever toward the valve seat until the valve is completely closed. Air and carbon dioxide gas pass through the vent hole of the barrel and gather at the top of the trap. The steam discharged from the vent will be condensed due to the heat dissipation of the trap. When the incoming condensed water starts to fill the barrel, the barrel begins to exert a pulling force on the lever. As the condensate level continues to rise, the force generated continues to increase until the pressure difference can be overcome and the valve can be opened. When the trap valve starts to open, the pressure difference acting on the valve disc will decrease. The barrel will drop rapidly, making the valve fully open. The non-condensable gas accumulated on the top of the trap is discharged first, and then the condensed water is discharged. When the water flows out of the barrel, the dirt will flow out of the trap. At the same time as the condensate is discharged, steam starts to enter the trap again, and a new cycle begins.
The working principle of steam trap
