tailieunhanh - GENERAL ELECTRIC GENERATING PLANTS Part 9

Tham khảo tài liệu 'general electric generating plants part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | MIL-HDBK-1003 11 Anchor and Support Types. The following describes anchor and support types a For moderate vertical movements use spring hangers with provisions for adjustment. b For large vertical movements use compensating spring or counterpoint hangers. c For resilient or vibrating conditions use nonresonant constant-support sway hangers. d Anchor reactions are obtained from flexibility calculations. Welding. For welding of pipe joints refer to ANSI B31 the American Society of Mechanical Engineers ASME Boiler and Pressure Vessel Code SEC 9 Qualification Standards for Welding and Brazing Procedures and NFGS-15711. Flows and Recommended Velocities. Refer to NAVFAC for flows and recommended velocities. Valves and Specialties. Refer to NAVFAC Central Heating Plant for valves and specialties. 57 MIL-HDBK-1003 11 Section 13 INSULATION Insulation Materials. See Table 14 for characteristics and temperature use limits of insulation materials applicable to diesel-electric generating plants. Table 14 Characteristics of Thermal Insulation Materials Form Accepted Maximuni Material Composition Temperature for Use Opl Dens i ty lb ft3 Typical Conductivity at Mean Temperature2 40 70 100 200 300 500 700 900 Blankets. Mineral wool rocx slag or glass Metal reinforced 1 200 6-15 Felt-flexible type 450 Felt-semi-rigid type 450 2-8 Calcium silicate 1 200 11 Cellular glass 800 9 Blocks Corkboard without added 200 boards. binder . Diatomaceous silica 1 500 22 1 900 25 Pipe Mineral wool rock slag Insula- or glass t ion Low temp asphalt or 200 6-18 resin bonded High temp resin bonded 600 6-10 with inorganic binder 1 600 16-24 Plastics foamed 175 Rubber foamed 150 5 Calcium .