本施工要点适用于各种管道系统
绝缘保温层施工应注意事项
绝缘材料用于设备及管道保温，施工时应使无贴面的一面贴干设备及管道表面。水平管道保温，先在管顶面加铺10~30mm厚棉毡，宽度为周长的1/3，然后再沿管周壁敷设缝毡，用镀锌铁丝（或钢带）扎紧，捆扎间距为200~400mm，对于焊有销钉的设备，缝毡压缩到设计厚度时销钉露头约5mm，并套上自锁垫圈紧固。对于不宜焊销钉的设备，可用钢带捆扎。间距为400~600mm，并保证在缝毡宽度方向不小于二道。为使棉毡的施工密度在100~120kg/m3。通常采用的缝毡制品密度是80~100kg/m3，施工压缩量为20~10%。
选用套管保温，选用的套管内径应与管道一致。施工时，张开套管切口部套于管道上，水平管道保温时，切口置于侧下。对于有复合外保护层的套管。撕开切口部搭接头内面的防护纸，将搭接头按压贴平，相邻两段套管要靠紧，缝隙处用压敏胶带粘接，对于无复合处保护层管壳，可用镀锌铁丝捆扎，每段套管捆2-3道。
绝缘材料用于平壁或大曲面防火保温。施工时应紧贴于设备外壁，曲面设备需将绝缘板材的两端接缝切成斜口拼接，通常宜采用销钉套自锁垫圈固定。对于不宜焊销钉的设备，可用钢带捆扎，但拐角处要用镀锌铁皮包角，捆扎间距保证每1000mm间距。
当保温层厚度超过80mm时，应分层保温。多层保温时错缝敷设，分层捆扎。
设备及管道支座、吊架以及法兰、阀门和人孔等部位，在整体保温时留一定装卸间隙，待整体保温及保护层施工完毕后，再作局部保温处理。并注意施工完毕的保温结构不得防碍活动支架的滑动。
法兰、阀门和入孔保温，宜采用可拆卸的金属外壳保温。
The construction is suitable for various pipeline systems
Insulation construction should pay attention to matters
Insulating materials for equipment and pipe insulation, construction should make no veneers adhered dry equipment and pipe surface. Horizontal pipe insulation, first in the top of the pipe surface paved with 10~30mm thick wool felt, width of 1/3 circumference, and then along the tube wall laying blanket, with galvanized iron wire ( or steel) binding, binding distance is 200~400mm, for welding with pin device, sewed felt is compressed into the design thickness of about 5mm pin outcrop, and a self-locking washer fasteners. To unfavorable welding pin device, usable steel banding. Distance 400~600mm, and that in the slit width direction is not less than two felt. In order to make the wool blanket construction density in 100~120kg/m3. Usually the blanket product density is 80~100kg/m3, the amount of compression of 20~10% construction.
Selection of casing insulation, the inner diameter of the casing should be consistent with the pipeline. During construction, open trocar incision part set in the pipeline, horizontal pipe insulation, incision in the side. The composite protective layer casing. Tear notch lap joint surface inside the protective paper, a joint press attached, and two adjacent sections of casing is tight, the gap with pressure-sensitive adhesive tape for bonding, without complex protective layer of shell and tube, galvanized iron wire bundle available, each section of tube bundle of 2-3.
Insulating materials for flat wall or surface fire insulation. The construction should be attached to the outer wall surface of the equipment, equipment insulation sheet ends cut into oblique mouth splice joints, usually adopt the dowel sleeve locking washer fixed. To unfavorable welding pin device, usable steel banding, but the corner with galvanized angle, spacing to ensure every 1000mm spacing.
When the insulation layer thickness of more than 80mm, shall be layered insulation. Multilayer insulation fault seam laying, layered strapping.
Equipment and piping support, hanger and flange, valve and manhole and other parts, in the overall insulation leave certain loading and unloading gap, to be integral insulation and protective layers after completion of construction, and then as a local heat treatment. And completed the construction of the insulation structure of the movable bracket sliding shall not interfere.
Flange, valve and into the bore insulation, should adopt the detachable metal shell insulation.
保护层（绝缘层外）施工应注意事项
金属保护层
安装前，金属板两边先压出两道半圆凸缝。对于设备保温，为加强金属板强度，可在每张金属板对角线上压两条交叉拆线。
用于设备及超过3m立管保温时，将相邻两张金属板的半圆凸缝重叠，自下向上安装，上层压住下层板。搭接50mm。当采用销钉固定时，用木锤对准销钉将薄板打穿，去除孔边小块渣皮。套上3mm厚胶垫，用自锁垫圈套入压紧（或用AM6螺母拧）。当采用支撑圈、板固定时，板面重叠（或搭接）处尽量可能对准支撑圈、板，先用3.6mm钻头钻孔，再用自攻螺丝钉M4×15紧固。
用于管道保温，可直接将金属圈卷在保温层外，按管道坡向，自下向上施工，两板横向半圆凸缝重叠，纵向搭扣向下，搭接处重合50mm。若采用支撑圈固定时，两板横向半圆凸缝重叠处尽量对准支撑圈，以便用自攻螺丝钉紧固。
搭接处先用3.6mm钻头钻孔，再用自攻螺丝钉M4×15紧固。螺丝钉间距为150~200mm。
当自攻螺丝不便使用时，搭接处可用卷边扣接。
考虑设备及管道运行受热后膨胀位移，金属保护应在伸缩方向留适当活动搭口。
复合保护层
油毡，用于潮湿环境的管道及小型筒体设备保温外保护层。可直接卷铺在保温层外，由低向高处敷设，横向搭接用稀沥青粘合，纵向搭缝向下，均搭接50mm，然后用镀锌铁丝或钢带扎紧，间距为200~400mm。
玻璃布，以螺纹关紧擅缠在保温层（或油毡）处。前后搭接约40mm，自低向高处施工，布带两端和每隔3m处用镀锌铁丝或钢带捆扎。
玻璃布复合铝箔，用于管道及小型筒体设备保温外保护层。可直接敷设在除缝毡以外的平整保温层外，搭接为40mm，接缝处用压敏胶带粘毡。
玻璃布乳化沥青表面涂层，在缠好的玻璃布外表面涂刷乳化沥青，用量为2~3kg/m2，一般涂刷二道。第二道需在第一道干燥后进行。
玻璃纤维增强塑料，在缠好的玻璃布外表面涂刷不饱不口聚酯树脂，用量为1~2kg/m2。
使用压敏胶带，乳化沥青、不饱和聚酯树脂等材料时，须向有关生产厂索取性能及使用说明书。在有防火要求时，应选用具有自熄性的。
油漆
对于玻璃布、玻璃钢以及镀锌铁皮等外保护层，可根据设计要求或环境需要，涂刷各色油漆，用以防护或作识别标记。
The metal protective layer
Before installation, metal plates on either side of first out of two semicircular convex joint. For equipment insulation, to enhance the strength of the metal plate, metal plate in each diagonal pressure two cross stitch.
For equipment and more than 3m riser insulation, adjacent to the two metal plates of semicircle convex slot overlap, from bottom to top, installation, the upper pressing the lower plate. Lap 50mm. When the pin is fixed, with a wooden hammer alignment pin plate through hole edge piece, removal of slag skin. Set of 3mm thick rubber pad, with locking washer sleeve pressing ( or AM6 nut ). When the supporting ring, plate fixation, plate overlap ( or overlapping ) where possible alignment support ring, plate, first with 3.6mm drill bit, then a self-tapping screw M4 × 15 fastening.
For pipeline insulation, which can be directly metal coiled in the insulation layer, on the slopes, bottom-up construction, two panel horizontal semicircle convex joint overlap, longitudinal buckle down, joint coincidence 50mm. If the support ring fixed plate, two lateral semicircular convex joint overlap as alignment support ring, so that the screw fastening.
Joint first with 3.6mm drill bit, then a self-tapping screw M4 × 15 fastening. Screw pitch 150~200mm.
When the screws are inconvenient to use, the lap joints available crimping fastening.
Consideration of the equipment and pipeline heat expansion displacement, metal protection should be in the extension direction keep proper activity placket.
Composite protective layer
Linoleum, for the humid environment of pipes and small cylinder equipment insulation outer protective layer. Direct rolling in the insulation layer, from low to high laying, transverse joint with dilute asphalt adhesive, longitudinal lap seam downward, are lap 50mm, then use galvanized iron or steel truss, distance 200~400mm.
Glass cloth, to close good thread wrapped in insulation layer ( or felt ). After lap around 40mm, from low to high construction, cloth belt ends and at intervals of 3M with galvanized iron or steel banding.
Glass cloth composite aluminum foil, used for pipes and small cylinder equipment insulation outer protective layer. Can be directly laid in addition to blanket outside the flat outside the heat insulation layer, overlapping seams 40mm, pressure-sensitive tape mat.
Glass cloth emulsified asphalt surface coating, in the wrapped glass cloth outer surface coating emulsified asphalt, the dosage of 2~3kg/m2, brushing two. Second in the first line of dried.
Glass fiber reinforced plastic, in the wrapped glass cloth coated hungry do not export polyester resin, the dosage is 1~2kg/m2.
The use of pressure sensitive adhesive tape, emulsified asphalt, unsaturated polyester resin and other materials, payable to the relevant production plant for performance and instruction for use. The fireproof requirement, should be chosen with self-extinguishing properties.
Paint
For glass cloth, glass steel and galvanized iron sheet outer protection layer, according to the design requirements and environmental needs, with colored paint, for protection or identification mark.
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