对开多叶调节阀 适用 : 对开多叶风量调节阀,一般用在空调 \ 通风系统管道中,用来调节支管的风量,也可用于新风 与回风的混合调节。该阀分为手动和电动两种,按密封性来分,还可分成密闭型和普通型两种。电动可以 自动控制调节风量与自控系统配套。 FT 型多叶对开风量调节阀阻力系数 阀门开启角度 90° 72° 54° 36° 18° 0° 阻力系数 0.43 1.05 6.28 34.32 401.44 3656.54 FT 型风量调节阀流量调节特性 速管 风量 流量百分比 相对阻力 风速 90° 72° 54° 36° 18° 0° m/s m 3 /h % % % % % % ( H ) 7.0 3970 100 62.2 30.1 12.5 3.6 1.2 0.305 6.0 3460 100 64.4 30.1 12.7 3.7 1.2 0.279 5.0 2880 100 66.3
rapid deve lopme nt of the market economy environme nt to expl ore publi c servants ' duty consumpti on monetizati on reform has provided a good foundation. The socialization of rear servi ce work has been la unched, and rapi d progre ss in some pl aces a nd departme nts, duty consumption monetiza tion of carrier a nd a ppr oach t o manageme nt has bee n resolve d. Thir d, in re cent years, explor