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class='key_tag'><font><strong>风筒</strong></font></a>注重使用时空间受限</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">使用隧道风管时，注意空间有限。隧道工程在施工过程中往往受到限制。采用隧道风管时，根据空间大小确定风管大小。如何区分隧道内如何区分，?；ご胧┯邢?？</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">一、隧道风筒布质量好坏：</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">1.看材料，不同的材料也决定了它的功能和性能，所以好的材料决定了通风管道的质量。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">2.检查通风管道的耐热性，特别是塑料材料。很多朋友忽略了这一点，导致购买的材料使用寿命不长，价格也要保证不要偏离市场价格太多，否则就要怀疑购买的隧道风管质量是否有问题。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;"><br/></span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">有限空间作业的事故类型有窒息、中毒、火灾、爆炸等，主要是中毒、直接中毒。使人体组织处于缺氧状态的过程是窒息，能使人体窒息的气体称为窒息。窒息气体通常分为：</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">1.化学窒息气体，如一氧化碳、氰化氢、硫化氢等。，氧气可以在人体内运输，阻碍人体组织利用氧气的功能，导致全身组织缺氧。窒息性气体中毒表现为头痛、头晕、易怒、定向障碍、呕吐、抽搐等一系列症状。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">2.单纯窒息气体:如氮气、二氧化碳、甲烷、乙烷、水蒸气等。这种气体毒性小或无毒，但由于空气中含氧量高，氧气相对含量大大降低。吸入这种气体会降低动脉血氧分压，导致缺氧窒息。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">3.使用前，必须在隧道风道制造商的专业指导下进行实际操作，避免不必要的后续损失。</span></p><p style="text-indent: 2em; text-align: center;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;"><img src="http://cdn.myxypt.com/205b7c58/21/08/a054c911e05ca779b840497728940218c24d8599.jpg" width="800" height="548" border="0" vspace="0" title="负压风筒" alt="负压风筒" style="width: 800px; height: 548px;"/></span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">隧道工程风筒的正确选用</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">1.用于隧道通风的风筒分为无框架柔性风筒，有刚性框架的柔性风筒.硬风筒。由于重量轻，易于储存、搬运、连接和悬挂，成本低，仅用于压入式通风，只能在抽出式通风中使用刚性骨架的柔性风管和硬质风管。由于其成本高、重量大、储存困难、搬运安装困难，入式通风。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">2.隧道工程风筒的选择应考虑隧道工程风筒直径与风机出口直径匹配。</span></p><p style="text-indent: 2em;"><span style="font-family: 微软雅黑, "Microsoft YaHei"; font-size: 16px;">3.当其他条件相似时，很容易选择风阻小、漏风率低的隧道工程风道。</span></p><p><br/></p></div> <div class="xypg-detail-tags"> <div class="tags-title"> <h3>标签</h3> <div class="baidu-share">  <div class="bshare-custom"> <a title="分享到QQ空间" class="bshare-qzone"></a> <a title="分享到新浪微博" class="bshare-sinaminiblog"></a> <a title="分享到人人网" class="bshare-renren"></a> <a title="分享到腾讯微博" class="bshare-qqmb"></a> <a title="分享到网易微博" class="bshare-neteasemb"></a> <a 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