The operation principle for thermostatic steam traps utilizes the temperature difference between steam and condensate.
Thermostatic steam trap working principle.
It utilizes bimetallic strips of dissimilar metals stacked together in pairs.
Bimetallic trap is classified as temperature operated traps thermostatic trap and it s by and large the most robust design amongst the various types of traps in common use.
We will also have a brief look at the maintenance procedures of the same.
These are mechanical type of steam traps working on the principle of buoyancy.
The three important functions of steam traps are.
Initially the bucket is resting at the bottom of the steam trap and the valve seat is wide open.
At star up air will enter the steam trap and will be discharged out through the bleed hole.
Tlv traps offer three types of temperature sensing materials to detect differences in temperature.
Thermostatic trap also known as the temperature trap uses expansion of a bimetallic strip an oil filled element or a flexible below to activate a valve.
A steam trap is a device used to discharge condensates and non condensable gases with a negligible consumption or loss of live steam steam traps are nothing more than automatic valves they open close or modulate automatically.
In the previous article we discussed the basics of a stream trap and learnt about two types of steam traps mechanical and thermostatic steam traps.
An essential part of the trap is the small air vent hole in the top of the bucket.
Discharge condensate as soon as it is formed unless it is desirable to use the sensible heat of the liquid condensate.
As its name implies the mechanism consists of an inverted bucket which is attached by a lever to a valve.
Working principle of bimetallic steam trap.
Each operates in a different way and is suited to specific types of application.
The inverted bucket steam trap is shown in figure 11 3 3.
Inverted bucket steam trap.
In an oil filled element type steam trap as shown in the figure the element a expands as the temperature of the condensate rises.
The expansion of element a leads.
The operation and benefits of 3 different types are considered here liquid expansion traps bimetallic and balanced pressure thermostatic traps.
This video explains how a thermodynamic steam trap works.