| 摘要 |
Large diameter fiber-reinforced plastic (FRP) flues are installed inside large diameter concrete chimneys or steel structures, comprising a plurality of large diameter FRP cylindrical sections, jointed end to end and stacked up longitudinally. Large diameter cylinders are comprised of circumferential segments, side jointed together by means of chemical bonding and mechanical fastening to complete the enclosures. Longitudinal sides of each segment are designed in specific joints of inward flanges for connections. The novel mean for large diameter FRP flue design using compositional modular segments, accommodates rapid construction, shop fabrications, corrosion resistance for low maintenance, inertness of over a wide range of adverse, weather conditions for onsite vertical filament winding, overcomes the limitations or even infeasibility of monolithic large diameter FRP cylinders for shipping and transportation and eliminates needs of large opening on the outside chimney structures. In addition to the nature of filament wound FRP composites in low density and physical properties, this invention surpasses steel, alloy metal and conventional FRP flues in numerous aspects in quantity shop fabrications, lower costs, lighter weight, and easier installations, in flue gas desulfurization industries.
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