One. DSD series uniaxial double damper Product Overview Huaneng Power auxiliary production uniaxial double damper is in the introduction of foreign advanced technology, based on the optimized design. The product hoist rotation flexibility, driving torque is reasonable, closed tight and reliable, long service life. Thermal power plant desulfurization system, an important equipment. Uniaxial double damper for the FGD absorber inlet and outlet or bypass flue, or for flue gas denitrification and flue gas dust removal system, the dampers usually louvered double baffle structure, shutdown through the double-barrier seal between the wind, the role of isolation off fumes. Equipment in the running reliable, hoist flexible, close off, and high strength, rigidity, durability, making the system much more efficient desulfurization, flue gas desulfurization to meet the emission requirements of environmental protection. II. DSD series uniaxial double damper technical parameters. Uniaxial double damper DSD (model) -W (width) × H (height) 2. Power and air supply: Single double damper: AC three-phase three-wire power supply ~ 380V / 50Hz or compressed gas source user to determine 0.4MPa-0.8MPa 3. Leakage of: ≤0% 4. Design temperature: Usually <350 ℃, higher than otherwise noted 350 ℃ (the temperature throttle up 1100 ℃); 5. Design Pressure: General <26000Pa, the breeze a large size or have special requirements otherwise noted; 6. Installation position: horizontal duct, vertical wind tunnel, inclined duct. 7. circulating medium: flue dust or other gases. Three. DSD series uniaxial structural features double damper A. Lianyungang auxiliary power producer Huaneng reasonable design structure uniaxial double damper blade rigid, stable and reliable operation, a single dual-damper blade seal type: elastic sealing gas seal, design and installation of the housing with a sealing air inlet valve with damper interlock control. After the seal between the blades through the air with a certain pressure and flow, it can effectively cut off from the flue gas flow around the blade, so that the damper seal efficiency is 100%. B. Uniaxial double shutter door opening and closing time ≤60S (selected according to user requirements). C. Huaneng Power auxiliary production exterior design uniaxial double damper housing having interlocking mechanism, optimized design of the shutter opening and closing of each blade streamlined way, to open or close synchronization, integration operation. D. Uniaxial double damper uniaxial drive double louvered baffle structure, intermediate double blade designed with imported seal air sealing chamber, at least above the flue gas pressure 500Pa sealing air into the bezel so the double block air seal is formed between the plate spacer layer, block by flue gas stream. E. Huaneng Power auxiliary production uniaxial double damper rotated in ensuring flexible working conditions, no Jamming phenomenon. The use of seat frame (high temperature) seat belt aligning bearing structure, the shutter driving torque is smaller, lighter and more flexible rotation. Shutter blade design thermal expansion compensation gap, hot running safe and reliable. F. Huaneng Power auxiliary production uniaxial double damper baffle is designed to streamline the structure can be sufficiently reduced resistance to airflow. Wherein the outside of the door frame is made of steel production, the use of airfoil blade design (or plate type) structure, reasonably smooth airflow distribution. Blade body is made of ordinary carbon steel or alloy steel, blade overlap (or with casing seals) have elastic at the stainless steel or nickel-based alloy sealing sheet, in line with the strength and rigidity of working parameters conditions and strong The attached plus extension shaft. Each damper blade shank device consists of two external installation, automatic leveling, maintenance-free with flange bearings to support, effectively avoid the bezel around the axle misalignment or drive torque increased production of long blades open and close after running When generating Jamming phenomenon. G. Uniaxial double damper connection now smoke flue damper inserted within the anti-seal welded flange, the pros and cons before connecting flange bolts positioned before shipment, field joint seal welding. Damper site due to corrosion requirements and lined with pros after lifting sealing flange welding, shall ensure that the lining of the seal welding, spot coating must cover housing liner. H. Huaneng Power auxiliary production uniaxial double damper electricity (gas) actuators integrated intelligent control, with torque protection and limit switches, locally or remotely control operations, also has hands, electric (pneumatic) switching function to prepare for installation, use and maintenance. Before shipment after installation. Before the limit switch before delivery of electricity (gas) powered device to adjust settings in place, the user can access the power supply (or air) and the terminal connections that would allow damper is working properly. J. Sealing air system by sealing fan and an electric heater after Huaneng Technology department for Selection of supply. K. Drive mode uniaxial double flapper door is usually electric, pneumatic or hydraulic power. Convenient and reliable control. Can input and output switch signal (or input and output analog signals), in accordance with the system requirements for the opening of operational mechanism for control and real-time reflection vane vane opening state. You can remotely operate or program control, convenient DCS control automation. IV. DSD series uniaxial double damper scope of supply The scope of supply includes a damper body, electricity (gas), electro-hydraulic actuators, seal air system and other accessories.