SZS double drum superheated steam

This product is a double-drum vertical " D " type bulk water tube boiler. It consists of upper and lower drums, membrane water wall, superheater, convection tube bundle and economizer. The burner is arranged on the front wall. After the fuel is burned in the furnace, the flue gas is discharged into the chimney through the heater, convection tube bundle and economizer.

The automatic control function of the boiler meets the requirements of the "Boiler Safety Technology Supervision Regulations" ( 2012 ) for gas-fired boilers. It is equipped with a complete automatic control device and safety protection device to realize automatic water level control and dangerously low water level alarm, shutdown; steam Automatic pressure control and over-temperature, over-pressure alarm; over-pressure interlock protection device, low water level interlock protection device. To ensure the safe operation of the boiler. And equipped with reliable ignition program control and flameout protection device. And there is an interlock device with the following functions:

1. When all blowers are powered off, all fuel supply will be cut off automatically.
2. When the gas pressure is lower than the specified value, the gas supply will be cut off automatically.

• Features

1. This series of boilers has the following characteristics: The boiler adopts a double drum " D " layout, and the convective tube bundles are expanded on the upper and lower drums.
2. The boiler adopts the lower support method, which can expand freely upward.
3. The furnace water wall and convection flue all adopt membrane wall structure, which has good sealing performance and effectively reduces the use and maintenance workload of refractory bricks, in order to ensure the stable combustion of coalbed methane.
4. The outer packaging of the boiler adopts pressed guard plate, which is beautiful and beautiful in appearance.
5. The furnace of this boiler is equipped with inspection holes, which provides great convenience for use and maintenance. There are two explosion-proof doors on the furnace top.
6. High heat resistance material is used as the heat insulation layer, and the heat preservation performance is good.
7. There is an economizer arranged at the rear, which can effectively reduce the exhaust gas temperature, and the boiler thermal efficiency is high.
8. The boiler has a surplus heating surface and a large enough steam-water space to ensure the stability of the boiler parameters.
9. The water supply adopts continuous electric adjustment, and has the functions of high and low water level alarm and interlock protection.
10. The water spray desuperheater is adopted, the temperature adjustment is sensitive and the temperature adjustment range is large.

( 11 ) The range of safe and stable operating conditions of the boiler:

Gas pressure: 2800Pa,

Heat load : 70%-100% .

In addition, the front panel to install the burner mounting plate and the self-closed mouth shape selection of burner is designed according to the original design, if choose other burner, it can be installed by the department at the scene of the user to change according to the installation of the burner specifications.


The factory situation
Points when the boiler factory package is as follows:


On the drum and the drum drum on internal parts, welding parts,
Water drum and internal device;
Water cooling system; (the pipe strapping and diaphragm wall fragmentation)
Platform escalators components;
The furnace wall,
The outer packing.
Sealing device;
Boiler flue connecting pipe;
Economizer, condenser component;
Instrumentation, valves, piping parts; (
The burner.
Feed water pump;
Blower;
Electric control cabinet.
Spare parts
Technical documents: boiler installation design, the main pressure parts drawing and pressure parts strength calculation results summary, boiler thermodynamic calculation, smoke wind resistance calculation and results of calculating the tubewall temperature superheater summary table, two copies of each installation instructions and a product quality qualification certificate.