PPR复合保温管主要用于温泉、市政工程等,因此今天就来了解一下PPR复合保温管的安装方法与相关的注意事项有哪些?
一、PPR复合保温管的安装方法
1.切管:根据PPR复合保温管的直径选择合适的接头;根据接头接口的深度值,在管头处切断一段外管和保温层,留出内部PPR管(一般留出3-125px左右)。
2.热熔接管:将切好的管外壁和接头内壁分别热熔,然后插入一起,直到完全熔合、冷却、凝固。
3.保温:从连接片的发泡孔中注入小瓶聚氨酯发泡剂(或整体包裹保温棉)。
4.外壳:将与外管相对应的连接片卡在接头处,拧紧连接螺钉连接片与管口的搭接尺寸(H)不得小于5-8mm。在接缝处刷PVC胶或PVC与丁酮(MEK)混合胶,完成接缝。
二、PPR复合保温管安装时的注意事项
1.工程施工前,对保温管、管件等进行外观检查;主要发现了问题都不能再应用。
2.由于其PPR复合保温管管体重量较轻,在整个安装过程中人力都能移动,一般不需要使用机械设备,所以在放入管沟时,不能与沟壁和排水沟发生剧烈冲击;
3.安装法兰盘插座的闸阀和管件时,应采取避免额外拉应力的对策。在规格超过100毫米的闸阀下,应设置砖墩。
4.一般管道在穿越重生铁路线、道路等障碍物时,必须设置防水套管,以维护管件。而且PPR复合保温管不需要,因为它在生产制造时已经有了外衣管。
5.当保温管道安装和铺设工程终止时,用瓶塞或其他盖子密封支管,以避免污垢进入保温管道。
6.熔接管件时,应将与熔接保温管规格相匹配的加热头安装在焊接设备上,连接开关电源,等待加热头达到260℃。同时,将保温管和管件插入熔接器中,按规定时间进行加热。加热后,取下保温管和管件,立即连接。保温管和管件连接配套设施时,如果两者部位不对,可以在一定时间内进行少量调节,但扭曲视角不适合超过5度。
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