SJMC-Shutter door

Product Overview 

The damper door is a single or double layer louver type damper used in flue gas desulfurization, denitr and dust removal systems to achieve the function of isolating and cutting off the flue gas. It has the functions of full opening and full closing, flexible action and operation. According to the medium, carbon steel and nickel-based alloy materials can be selected.

Performance features 

1.The single-layer louver damper is designed without sealing air, with a sealing efficiency of 99%. The-layer louver damper is designed with asealing chamber in the middle of the blades, which is forced with sealing air at a pressure of 500 Pa form a sealed air isolation layer between the double-layer dampers, blocking the passage of the flue gas flow.

2. The damper opening and closing angle is90°, and the opening and closing time is ≤50s (can be determined according to the user's requirements).

3. Blade sealing type: elastic and air sealing. The shell is designed with a sealing air inlet valve, which is interlocked with the damper door for control. 

4. Driving mode: generally, pneumatic. 

5. The electric device adopts intelligent integrated control, which can be controlled locally or remotely, and also has a manual, electric (pneumatic switching function for use during installation and commissioning, and maintenance. 

6. The sealing fan and electric heater of the sealing system can be provided by us after selection.

Damp door technical parameters

1. Flue cross section: W (width) x H (height) x L (thickness) 

2.ue cross section: DN (flue inner diameter) x L (thickness) 

3. Installation position: horizontal air duct, vertical air duct, inclined air duct .

4. Medium of circulation: flue gas or other gases

5. Design pressure bearing capacity:  8000Pa 

6. Design temperature resistance: ≤50°C 

7. Sealing air pressure: 500Pa higher than the medium pressure in the system

8. Single louver leakage rate:1%; double louver leakage rate: ≤0% 

9. Power supply: AC three-phase ~380V/50Hz or determined by the user

10. Air source: compressed air 0.4MPa-0.8MPa