تصميم مقاوم للحريق لصمام فراشة ناعم غريب الأطوار

The fire protection features of double eccentric soft seal butterfly valves are crucial for ensuring safety in various industrial applications. These valves, characterized by their simple structure and ease of operation, play a vital role in controlling fluid flow in petrochemical, metallurgical steel, water treatment, power generation, and other industries. With advancements in industrial technology, butterfly valves have evolved rapidly, offering enhanced capabilities such as high-temperature resistance, strong sealing, and extended service life.

The double eccentric butterfly valve, also known as a high-performance butterfly valve, is particularly favored in critical systems like water and power plants, steel smelting facilities, and chemical processing plants. Its versatility and reliability make it indispensable for regulating and isolating fluid flow in complex piping networks. Over the years, continuous improvements in valve design have addressed inherent limitations, leading to enhanced performance and expanded market demand.

Overview of Butterfly Valve Types

Butterfly valves are classified based on structure and sealing mechanisms, offering a wide range of options to suit diverse applications. The concentric butterfly valve, featuring an integrated stem axis, butterfly plate center, and body center, offers simplicity in design and production. However, its constant pressure on the disc and seat can lead to rapid wear, necessitating the use of resilient materials for the valve seat.

The single eccentric butterfly valve addresses pressure-related issues by deviating the rod shaft from the butterfly plate center. This design reduces extrusion pressure between the disc and seat, though friction between the two remains a concern, limiting its widespread use.

In contrast, the double eccentric butterfly valve represents a significant advancement over its predecessors. With the stem shaft deviating not only from the disc center but also from the body center, this valve eliminates excessive pressure and friction between the disc and seat when fully opened. The use of soft seals further enhances sealing performance, with options for metal seats expanding its suitability for high-temperature applications.

The tri-eccentric butterfly valve takes sealing capabilities to the next level with a metal hard seal seat, offering superior resistance to high temperatures and pressures. By relying on contact surface pressure rather than elastic deformation for sealing, this valve overcomes leakage challenges associated with traditional sealing methods.

Conclusion

The evolution of butterfly valve design has resulted in a diverse range of options to meet the needs of various industries. From simple concentric designs to advanced tri-eccentric configurations, these valves continue to play a crucial role in fluid control systems worldwide. With ongoing advancements and innovations, butterfly valves are poised to maintain their position as indispensable components in industrial infrastructure.