1. 缠绕粘接
entanglement
湿法烟气脱硫工程中采用的FRP浆液喷淋管,其在制造过程中为便于运输,通常采用分段、分部件制造,待现场安装时再采用缠绕粘接工艺将各部分连接起来。目前浆液喷嘴与FRP喷淋管的连接也基本由以前的法兰连接改为用缠绕粘接工艺进行连接。缠绕粘接工艺具有连接强度高、不易泄漏、工艺简单、施工方便、造价低等优点。
Used in wet flue gas desulfurization project of FRP slurry spray pipe, its in the manufacturing process for ease of transportation, usually by subsection, division of manufacturing, site erection and will use the coil bonding process connect each part. At present, the connection between the slurry nozzle and the FRP spray tube is also basically changed from the previous flanged connection to the wound bonding process. The adhesive technology has the advantages of high connection strength, low leakage, simple process, easy construction and low cost.
玻璃纤维表面毡的具体尺寸可根据实际的压力和直径确定。由于玻璃钢具有很高的热膨胀率,所以施工时要求在同一种环境温度下测量、切割、装配和粘接,需预先准备好符合要求的玻璃纤维加固材料、树脂胶泥、薄片树脂、表层树脂和接触剂。
The concrete size of the glass fiber surface is determined according to the actual pressure and diameter. Due to glass fiber reinforced plastic has the very high thermal expansion rate, so the construction requirements in the same environment temperature measuring, cutting, assembling and glue, to be ready to meet the requirements in advance, resin cement, glass fiber reinforced materials thin resin, surface resin and contact agent.
2 .缠绕层的结构
The structure of the winding layer
缠绕部分外表面结构应和管道外表面一致,保证缠绕部分的性能与管道整体性能一致。另外,为防止浆液对管道对接端面造成腐蚀,对接缝隙需要采用树脂胶泥填充,配置胶泥所用的树脂要求与管道树脂一致。如果需要可对最外层上蜡以防止空气进入和开缝(裂)。
The surface structure of the winding part should be consistent with the outside surface of the pipe, ensuring that the performance of the winding part is consistent with the overall performance of the pipe. In addition, in order to prevent slurry pipe butt end cause corrosion, butt crack need to adopt resin cement filling, configuration resin used in the cement demand in accordance with piping resin. The outermost layer of wax is needed to prevent air entry and opening (crack). |