聚氨酯保溫鋼管廠家引見其在施工的時分需求留意什么
Polyurethane Insulating Steel Pipe Manufacturer Introduces What Does It Need to Pay Attention to During Construction
1.在施工進(jìn)程中，不只要保證溝槽平整，還要保證槽底枯燥，且需求作200mm左右厚的細(xì)砂墊層。其目的一是避免硬物損壞保溫外套管，二是應(yīng)用砂子的活動性，充沛填充管道四周的空隙，以保證足夠的摩擦力。
1. In the construction process, not only to ensure the smooth groove, but also to ensure that the bottom of the groove is dry, and the need for 200 mm thick fine sand cushion. The purpose is to avoid the damage of hard material to the insulating outer sleeve. The second is to fill the gap around the pipeline with the activity of sand to ensure sufficient friction.
2.聚氨酯保溫管裝置終了需停止1.5倍任務(wù)壓力的水壓實(shí)驗(yàn),待水壓實(shí)驗(yàn)合格前方可停止接口發(fā)泡處置。
2. At the end of the polyurethane insulating pipe device, the water pressure test of 1.5 times the task pressure should be stopped, and the foaming treatment of the interface can be stopped before the water pressure test is qualified.
3.一次性補(bǔ)償直埋管線一定要按設(shè)計(jì)要求，預(yù)熱設(shè)計(jì)溫度時要保證溫度的恒定。
3. The one-time compensation buried pipeline must meet the design requirements and keep the temperature constant when preheating to the design temperature.
4.聚氨酯保溫管進(jìn)入修建物、地溝時應(yīng)加穿墻套管，在出土端設(shè)置固定支墩。
4. When polyurethane insulating pipe enters buildings and ditches, it should be pierced with wall casing and fixed piers at the end of excavation.
5.回填土要分層夯實(shí)。回填土的質(zhì)量關(guān)于管線的平安運(yùn)轉(zhuǎn)十分重要，一定要給予注重。
5. Backfill should be compacted by layers. The quality of backfill soil is very important for the safe operation of pipelines and must be paid attention to.
聚氨酯保溫管品種劃分方式有很多，例如它不只可以依照敷設(shè)方式、外護(hù)層以及保送介質(zhì)等特征停止劃分，還可以按照保送介質(zhì)的溫度停止分類。其中依照聚氨酯保溫管的敷設(shè)方式，我們可將其分爲(wèi)：直埋聚氨酯保溫管、架空聚氨酯保溫管兩種。但若依照聚氨酯保溫管的外護(hù)層停止劃分，我們則可以將其分爲(wèi)四大類，它們順次爲(wèi)：高密度聚乙烯外護(hù)層聚氨酯保溫管、玻璃鋼外護(hù)層聚氨酯保溫管、鋼外護(hù)層聚氨酯保溫管以及其他外護(hù)層保溫管。而若按照聚氨酯保溫管保送介質(zhì)停止分類的話，則可以分爲(wèi)：保送蒸汽用的蒸汽直埋聚氨酯復(fù)合預(yù)制保溫管、供水公用的耐低溫聚氨酯保溫管，與聚氨酯預(yù)制保溫管以及石油行業(yè)中，常用的埋地硬質(zhì)聚氨酯泡沫塑料防腐保溫管。于依照保送介質(zhì)的溫度，則可以分爲(wèi)：低溫聚氨酯保溫管、常溫聚氨酯保溫管與深冷聚氨酯保溫管三種。
There are many ways to classify the varieties of polyurethane insulating pipes. For example, it can not only be classified according to the laying method, the outer protective layer and the characteristics of the delivery medium, but also according to the temperature of the delivery medium. According to the laying method of polyurethane insulating pipe, we can divide it into two kinds: directly buried polyurethane insulating pipe and overhead polyurethane insulating pipe. However, if the outer protective layer of polyurethane insulating pipe is stopped, we can divide it into four categories: polyurethane insulating pipe with high density polyethylene outer protective layer, polyurethane insulating pipe with FRP outer protective layer, polyurethane insulating pipe with steel outer protective layer and other insulating pipes with outer protective layer. If we stop classifying according to the delivery medium of polyurethane insulation pipe, we can divide it into: steam directly buried polyurethane composite insulation pipe for steam delivery, low temperature resistant polyurethane insulation pipe for water supply, and buried rigid polyurethane foam plastic anticorrosive insulation pipe commonly used in polyurethane prefabricated insulation pipe and petroleum industry. According to the temperature of the delivery medium, it can be divided into three types: low temperature polyurethane insulating pipe, room temperature polyurethane insulating pipe and cryogenic polyurethane insulating pipe.
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