I. Product Overview bypass damper is Lianyungang Huaneng Power Auxiliary Co., Ltd. The introduction of foreign advanced technology of production, the desulfurization damper for the FGD absorber inlet and outlet or bypass flue, or to smoke flue gas denitration and dust removal system, usually louvered damper double baffle structure, the off pass into double-barrier seal between wind, isolation off effect of smoke. The product hoist rotation flexibility, driving torque is reasonable, closed tight and reliable, long service life. Thermal power plant desulfurization system, an important equipment. Huaneng company's bypass damper is in the introduction of foreign advanced technology, based on the optimized design. Equipment in the running reliable, hoist flexible, close off, and high strength, rigidity, durability, making the system much more efficient desulfurization, flue gas emissions to meet environmental requirements. Huaneng Thermal Power Corporation is a professional power equipment damper manufacturer, has been widely used in the major thermal power plant. II. Structural features: 1. Bypass damper designed structure leaves rigid, stable and reliable operation, bypass damper blade seal type: elastic sealing gas seal, design and installation of the housing with a sealing air inlet valve and damper interlock control. After the seal between the blades through the air with a certain pressure and flow around the blade can effectively cut off from the flue gas stream, so that the damper seal efficiency is 100%. 2. Bypass damper opening and closing time ≤60S (selected according to user requirements). 3. Bypass damper housing exterior design of the link mechanism, optimized design of each blade opening and closing the shutter blinds were streamlined way, to open or close synchronization, integration operation. 4. Bypass damper drive uniaxial uniaxial double louver 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. 5. Bypass damper is 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. 6. Bypass 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 seal) at the elastic sealing stainless steel or nickel-based alloy sheet having strength and stiffness under conditions consistent with working parameters and securely The attached plus extension shaft. Each damper blade shank device consists of two external installation, automatic leveling, no maintenance of Huaneng Power Auxiliary with flange bearings to support, increase or avoid long-running front bezel axis misalignment due to produce drive torque Jamming phenomenon produced when the blade open and close. 7. Bypass damper and flue connections as follows: insert the flue damper Anti inner flange seal welded, positive and negative locate the connection flange bolts factory, 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. 8. Bypass damper drive mode is generally electrically or pneumatically. 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. 9. Bypass damper electricity (gas) actuators integrated intelligent control, with torque protection and limit switches, locally or remotely control operations, but also with hands, electricity (gas) switching function to prepare for installation and commissioning, inspection and repair. After the installation and commissioning of the factory. Factory before the limit switch electric (pneumatic) 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. 10. Sealing air system seal fan and an electric heater may be provided after our selection sets. Three. Technical parameters 1. How to order: bypass damper FGD (model) -W (width) × H (height) 2. Power and air supply: bypass damper: AC three-phase three-wire power supply ~ 380V / 50Hz or user-determined bypass damper: Power AC ~ 220V / 50Hz (solenoid) compressed air source 0.4MPa-0.8MPa 3. Installation position: horizontal duct, vertical wind tunnel, inclined duct. 4. Circulation medium: containing other gases or fumes. 5. Design bearing capacity: ± 8000Pa 6. Design temperature: ≤350 ℃ 7. Leakage of: ≤0%