(1) It consists of two or three English letters
The first letter indicates the structural characteristics of the muffler;
T-through-hole muffler
P - small hole muffler
The second letter indicates the silencing object:
B. mufflers for ignition, steam pushing and other manual exhaust of boiler workshop B
A - Exhaust safety valve muffler of various sound source equipment
D. muffler for thermal power plant
C-boiler flushing pipe muffler
The third letter is also used for special purposes, such as
B - steam exhaust muffler of back pressure steam turbine
Y-deaerator exhaust muffler
(2) Represents the absolute pressure of boiler steam, at (for Reheater of intermediate reheat unit, the denominator used for fraction is used to indicate the temperature)
(3) The numerator is the boiler evaporation capacity t / h; the denominator is the muffler exhaust capacity t / h
In addition, for mufflers that need to distinguish between excess steam and saturated steam, the words (over) or (full) should be added after column to show the difference.
