该风筒充分利用了气体流场均化理论，结合工程实践经验和实测数据而设计，内壁曲线采用椭圆曲线，与采用直线的自然扩散型风筒相比较，消除了气流脱壁现象，缩小了涡流区，使风筒中心负压区面积大幅缩小，出风口断面风速分布趋于均化，经实际应用检测，该风筒能回收值大于 30%。风筒采用膜压工艺成型，外表面为含光稳定剂的光滑胶衣树脂层，内表面涂树脂两遍，经压模处理保持较高光洁度以减少阻力。风筒采用T型大端面空腹加强筋，应力集中段和联接端埋有预制件以保证风机整体强度和运行强度。正常使用条件下，风筒使用寿命不低于25年。技术；赵会华
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\型号T=28℃冷却水量(m3/h)T=27℃冷却水量(m3/h)主要尺寸(mm) 风量(m3/h) 风机直径(mm) 电机功率(kw)重量(kg) 进水压力104pa噪音Db(A)直径Dm△t=5℃△t=8℃△t=5℃△t=8℃总高度最大直径自重运转重Dm10m16mDBNL3-12DBNL3-20DBNL3-30DBNL3-401220304091522301524354610172734203321232342284212101460191219127200124001800021500700800120012000.60.80.81.120623040647848451495611181。.962.002.212.6054.054.055.055.040.341.143.543.536.637.539.939.91.31.51.81.8DBNL3-50 DBNL3-60 DBNL3-70 DBNL3-8050607080374451615768799244516070283030803094334422152215262926292800032300392004340014001400160016001.51.52.22.259664279087514801592206422432.652.902.782.0355.056.056.056.044.745.747.047.541.142.143.043.52.12.12.52.5DBNL3-100DBNL3-125DBNL3-150DBNL3-175100125150175749211213111414217120086108129150329435443553380331343134373237325600067200840009430018001800240024003.04.04.05.597310631695183530643290412544612.783.152.93.1556.057.058.058.550.050.752.053.046.047.448.649.63.03.03.63.6DBNL3-200DBNL3-250DBNL3-300DBNL3-3502002503003501531862252672312833343951802152603043835408542234473434243425134513411200013430016800018740028002800340034005.57.57.511.0213223443558386055926365922999063.013.263.53.7559.560.061.061.054.655.656.857.351.352.353.554.04.24.25.05.0DBNL3-400DBNL3-450DBNL3-500DBNL3-60040045050060030134337545445551457668034138742751646184868521957196044604467466746224000242000280000302200380038004200420011.011.015.018.54300464657686570120861346416285183603.63.853.704.2061.562.062.062.058.860.061.061.455.755.756.957.45.95.96.66.6