1.The boiler is a double-drum vertical A-type water-pipe steam

boiler. The main engine of the boiler is assembled into two

parts: the upper heating surface (main body) and the lower

combustion equipment. After the boiler arrives at the user, as

long as the upper and lower parts are closed, the installation

of other parts of the boiler can be carried out. The combustion

chamber is composed of water wall tubes arranged around the

furnace and upper drum, and the convective heating surface is

composed of dense convective tube bundles arranged between

the upper and lower drums at the rear. A soot blower is also

provided for the second return of the convective tube bundle

to remove the ash deposited on the convective tube bundle in

time. There are two repair holes on the back wall of the boiler,

so that all the furnace walls can be easily inspected and

repaired. Cast iron economizer is set separately at the tail of

the boiler.

2. The upper and lower drums are respectively equipped with

hole-entering devices, with one drum before and after the

upper drum and one drum under the lower drum. The left and

right headers are equipped with hand hole devices at both

ends. It is convenient for boiler inspection and maintenance,

and also provides great convenience for boiler cleaning after

shutdown.

3. The grate adopts a new type of large non-leaking grate (the

original grate is a flaky grate), which runs easily and reliably.

This type of grate sheet greatly improves the reliability of the

boiler operation, basically realizes that the heated grate sheet

is not subject to tension and is not easy to damage; the coal

leakage of the boiler operation is less than that of the sheet

grate sheet, which can save 1-2% of coal, and has good

ventilation conditions, and has certain self-cleaning ability.