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DD series inclined explosion-proof door
DD4321～DD4328

Adjusting the baffle damper is used for flow regulation of media such as air powder and flue gas. It is commonly used in the following situations: the ratio of primary and secondary air, coal mills, and the cold and hot primary air ducts at the inlet of supply and induced draft fans; Circulating flue gas pipeline, flue gas flow rate (recirculating flue gas pipeline), coal mill ventilation rate, and hot air temperature, etc.

The desulfurization flue damper door is the latest product produced by Huaneng Power Auxiliary Equipment. This product has flexible opening and closing rotation, reasonable driving torque, tight and reliable closing, and long service life. It is an essential equipment in the desulfurization system of power plants. The desulfurization flue damper door is used on the inlet, outlet or bypass flue of the absorption tower in the flue gas desulfurization system, or in the flue gas denitrification and dust removal system. The desulfurization flue damper door usually adopts a louvered double-layer damper structure, and when it is closed, sealed air is introduced between the double-layer dampers to achieve the function of isolating and closing the flue gas.

Smoke isolation doors are produced with plug-in doors in accordance with the standards for power product design set by relevant national departments. Huaneng products can operate safely and reliably in the system for a long time. The inlet and outlet of the air preheater need to be equipped with flue gas isolation valves in the flue gas pipeline system to prevent flue gas from entering the air preheater during the equipment shutdown phase.

The desulfurization baffle door is independently developed and manufactured by Lianyungang Huaneng Power Auxiliary Equipment. It is used on the inlet, outlet or bypass flue of the flue gas system absorption tower, or in the flue gas denitrification and dust removal system. The desulfurization baffle door usually adopts a louver type double-layer baffle structure. When closed, sealed air is introduced between the double-layer baffles for gas sealing, achieving the function of isolating and shutting off the flue gas.

Plug in doors are important auxiliary equipment for boilers, installed on the cold and hot air ducts of boilers in thermal power plants where isolation is required, such as the inlet and outlet ducts of coal mills. This product is reliable in operation, flexible in opening and closing, and tightly sealed, fundamentally solving the shortcomings of previous isolation doors that were not tightly closed and had long closing times. It greatly facilitates equipment switching and shutdown maintenance, and has been widely used in major power plants across the country.

Rectangular cold and hot air isolation doors are devices used in systems for conveying fly ash and powdered dry materials to cut off the conveyed material. They can be installed at the bottom of ash hoppers such as economizers, air preheaters, dry dust collectors, and flues in thermal power plants, and can also be used in conjunction with electric feeders. The working temperature is allowed to reach 200 ℃. This device is lightweight, small in size, and has no fly ash leakage. Our company offers both electric and manual options for use in conveying systems.

The sealing material of the desulfurization baffle door is made of specially treated alloy sheets, which have stronger elasticity and self-cleaning function. The passive enhanced sealing structure fully ensures that the gap between the sealing sheets is minimized, which can effectively ensure zero leakage of the equipment for a long time. Assist in the design of the quick opening mechanism to reduce the starting torque, making the quick opening device safer and more reliable. A reliable welding process can ensure that the weld seam has the same anti-corrosion life as the material body. The mechanical linkage control of the air seal valve is safe and reliable.

The flue gas denitrification baffle door is produced and manufactured using technology introduced by Lianyungang Huaneng. It is used on the inlet, outlet or bypass flue of the flue gas system absorption tower, or in flue gas denitrification and dust removal systems. The denitrification baffle door usually adopts a louver type double-layer baffle structure. When closed, sealed air is introduced between the double-layer baffles for gas sealing, achieving the function of isolating and shutting off the flue gas.

Electric and manual double plug doors are important auxiliary equipment for boilers, installed on the cold and hot air ducts of boilers in thermal power plants where isolation is required, such as the inlet and outlet ducts of coal mills. This product is reliable in operation, flexible in opening and closing, and tightly sealed, fundamentally solving the shortcomings of previous isolation doors that were not tightly closed and had long closing times. It greatly facilitates equipment switching and shutdown maintenance, and has been widely used in major power plants across the country.

Professional production: flap doors, pneumatic flap doors, electric flap doors, and various other types of products.