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想问问镀锌螺旋风管安装规范,求各位说一说？

想问问镀锌螺旋风管安装规范,求各位说一说？

浏览：73次 | 提问时间： 07-23 03:15

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吻别 07-23 03:15

主风管，连接通风设备的风管支路，从主风管引出，分向各个区域的风管支管，连接各末端风口的风管风管：是用于空气输送和分布的管道系统。有复合风管和无机风管两种。风管可按截面形状和材质分类。风管制作不锈钢风管制作是在咬口缝、铆钉缝、法兰翻边四角等缝隙处涂上密封胶（如中性玻璃胶）。涂密封胶前应清除表面尘土和油污。按截面形状，风管可分为圆形风管，矩形风管，扁圆风管等多种，其中圆形风管阻力最小的高度尺寸最大，制作复杂。所以应用以矩形风管为主。按材质，风管可分为金属风管，复合风管，高分子风管。其主要用途如下：(1)送风，包括通气，如送鲜风和排气，这个范围很广，如工厂车间，生产场地空气，由于有害气体产生需要排出室外，又需要把室外空气输送至室内。这时就要使用流量大而压力小的空气输送管道，螺旋风管就最适用，一般情况下使用镀锌铁管，有腐蚀性及特别潮湿场所使用不锈钢管。(2)送冷风，最常见的是中央空调的管道，这种管道需要加保温材料。螺旋风管可内贴保温材料，外表看来美观。(3)排油烟，饭店、酒楼、宾馆的厨房均有大量油烟产生，需要排出，使用圆形的风管就是油烟囱。在这里，螺旋风管该叫做油烟管。(4)除尘。有些工厂生产车间很多尘埃，需要专门的除尘装置，其中风流量较大的管道，可使用螺旋风管。(5)散装物料输送。有些工厂的生产过程中，需要输送松散的颗粒，特别是比重不大的如发泡塑料粒之类的使用螺旋风管造价低、效果好。

有一种痴情叫东方不败 07-23 03:24

一、漏风量低螺旋风管的密封性好，泄漏量小，通过对各种系列压力的测试，螺旋风管管段本身可以做到不泄漏，根据《通风与空调工程施工质量验收规范》GB50243-2002的标准，螺旋风管的允许漏风量仅为常规铁皮风管的50%。同时由于螺旋风管的长度可以根据用户的需要设定，减少风管的连接，减少泄漏点。而且螺旋风管可以采用无法兰连接，这样泄漏量更少，泄漏量的减少使日常运行费用和能源消耗降低，达到节能的效果。我将在接下来的工程实例中更具体的说明这一点。二、消声性能螺旋风管的空气流动性好，有效通流面积大，系统压降小，日常运行系统耗电量少。同时由于螺旋风管采用螺旋状咬口，因此相比同等规格的铁皮风管，其强度要高。当空气通过管道进行传递的过程中，由于圆周设有螺旋型咬缝，增加风管的强度，不易产生振动，因此在降低低频噪声传递上，具有良好的隔声效果，能够有效的降低了管壁传声，提高建筑品质。有研究表明，同样采用D200，厚度为26#钢板制作的对缝管与螺旋管，由于螺旋管的刚度高于对缝管，其低频段比后者低3~10dB，中高频段低12~20dB。在相近风管截面、风管材料厚度相同的前提下，在低频段椭圆螺旋风管的隔声量优于矩形风管10dB左右。三、强度高螺旋风管的接缝是周向的，接缝的强度比径向的直缝强度要高许多，所以螺旋风管能保证在1.5倍工作压力下接缝处无裂开，而且由于螺旋风管的强度高，所以规范还规定螺旋风管的板材厚度可以比一般的圆形风管适当减少10％～15％。螺旋风管采用镀锌铁皮制作，能满足一般通风空调的承压要求。四、机械化程度高螺旋椭圆风管螺旋式风管采用带钢带状卷料，通过风管成型机一次咬出咬口骨形，并沿螺旋渐开线轨迹卷成圆形管状，同时将咬口缝压紧，最后采用特殊的设备将圆形风管经撑拉定型加工成扁椭圆形。用户可根据需要的长度切割而成。螺旋风管的制造高度自动化，生产速度很快，同时采用工厂化生产和标准化制作，使得椭圆螺旋风管的生产效率大大提高，整体性强。五、外形美观，提升空间高度采用扁椭圆形风管能够合理有效地降低风管的占用空间高度，由于椭圆螺旋风管的两边是圆形，所以并不影响气流稳定，风管的刚性好，外露安装美观性好，对一些建筑空间有要求的建筑物有很大的优势。

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