What is a desulfurization damper door?

Release time:

2022-10-09

The desulfurization damper is used in pipelines of power plants and other industries to shut off the flow of media. It is categorized into air dampers or flue gas desulfurization dampers. The damper features a fully open, tightly sealing design that ensures continuous circulation of the medium within the system. The wide-type mechanical desulfurization damper incorporates advanced foreign technology and draws on the strengths of similar products, resulting in exceptionally outstanding performance.

The desulfurization damper is used in pipelines of power plants and other industries to shut off the flow of media. It is categorized into air dampers or flue gas desulfurization dampers. The damper features a fully open, tightly sealing design that ensures continuous circulation of the medium within the system. The wide-type mechanical desulfurization damper incorporates advanced foreign technology and leverages the advantages of similar products, resulting in exceptionally outstanding performance.

What is a desulfurization damper door?

The damper blades of desulfurization dampers are manufactured either by forming steel plates using molds or by casting. These linear blades feature low pressure loss and minimal cross-flow for safe media handling. The frame is also formed using steel plate molds, with the steel plates welded or cast. The blades are connected to the main shaft via fasteners. After closing, the damper is installed on the pipeline as a detachable component, ensuring convenient maintenance and easy replacement of parts during operation. According to their shape, damper doors can be classified into square dampers and round dampers; according to manufacturing process, they can be further divided into cast dampers and welded dampers; and based on their actuation method, they can be categorized as manual dampers, electric dampers, and pneumatic dampers. By material, they can be classified into cast iron gate dampers, carbon steel gate dampers, stainless steel gate dampers, and nickel-based alloy gate dampers.

Production characteristics:

1. Since the duct contains sulfur dioxide, which can easily cause corrosion, it is designed and fabricated using Q235 with an outer layer of 316L material, offering excellent resistance to temperature and corrosion, as well as a long service life.

2. To prevent the desulfurization damper door leaf from easily deforming at high temperatures, reinforcing bars are installed between the two leaves. The thickness of each leaf is 5 mm, and the overall thickness of the desulfurization damper door is 600 mm. The shaft head, bearing bush, shaft sleeve, and shaft of the desulfurization damper door are made from several different materials that offer high temperature resistance, wear resistance, and corrosion resistance.

3. The electric actuator is integrally connected to the shaft of the desulfurization damper, with no gap; after closure, the air leakage rate is less than 0.1%.

4. The electric actuator is equipped with a multi-functional limit switch device, ensuring accurate positioning of the switch.

5. The distribution cabinet is equipped with a DCS interface to enable automated operation performance.

6. Equipped with adjustable and isolated shared components, offering flexible adjustment and excellent isolation performance.

7. The switch operates smoothly with no jamming, no internal or external leakage, and the shaft seal is reliable.

8. Highly automated, featuring remote, short-range, and manual operation capabilities.

9. The production process complies with relevant industry standards.

The desulfurization damper gate adopts a single-shaft, double-damper structure with air sealing. Each damper blade is surrounded by a nickel-alloy sealing plate, and a sealing air valve is installed at the sealed air inlet on the damper gate body. The sealing air valve is mechanically linked to the damper gate. When the flue gas damper is open, the sealing air valve is closed; when the flue gas damper is closed, the sealing air valve is opened. When the damper gate is closed, sealing air is injected between the two blades, achieving complete isolation of the media on both sides. During operation, an adjustable linkage mechanism ensures accurate positioning and smooth rotation.

Jiangsu Yaxing

Address: Qingdun Industrial Park, Hai'an City, Jiangsu Province

Phone: 86-513-88483622 ，86-513-88480666,

86-513-88480999

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