聚氨酯保溫鋼管的特點(diǎn)
Characteristics of Polyurethane Thermal Insulation Pipe
聚氨酯發(fā)泡保溫鋼管的全稱是高密度聚乙烯外護(hù)管聚氨酯泡沫塑料預(yù)制直埋保溫管，由保送介質(zhì)的，義務(wù)鋼管、聚氨酯保溫層、聚乙烯塑料外護(hù)管，經(jīng)過設(shè)備依次向外結(jié)合而成。其結(jié)構(gòu)爲(wèi)：外維護(hù)層、保溫層、防滲漏層三部分，外維護(hù)層材料爲(wèi)聚乙烯夾克管或玻璃鋼或其它材料。敷設(shè)方式有直埋、架空、地溝三種方式。
The full name of polyurethane foamed insulating pipe is polyurethane foam plastic prefabricated direct-buried insulating pipe with high density polyethylene outer protective pipe. It is composed of delivery medium, obligatory steel pipe, polyurethane insulating layer and polyethylene plastic outer protective pipe, which are combined outward in turn through equipment. The structure of the outer maintenance layer is composed of three parts: the outer maintenance layer, the thermal insulation layer and the anti-leakage layer. The outer maintenance layer is made of polyethylene jacket pipe or FRP or other materials. There are three laying methods: direct burial, overhead and trench.
聚氨酯發(fā)泡保溫鋼管的特點(diǎn)：
Characteristics of polyurethane foamed insulating steel pipe:
1、聚氨酯發(fā)泡保溫鋼管降低工程造價(jià)。
1. Polyurethane foamed insulating steel pipe reduces project cost.
2、熱損耗低，糜費(fèi)動(dòng)力。
2. Low heat loss, waste power.
3、聚氨酯發(fā)泡保溫鋼管防腐，絕緣功用好，運(yùn)用壽命長。
3. Polyurethane foamed insulating steel pipe is anticorrosive, has good insulating function and long service life.
4、聚氨酯發(fā)泡保溫鋼管占地少，施工快，有利環(huán)境維護(hù)。
4. Polyurethane foamed insulating steel pipes occupy less land, construct quickly, and are beneficial to environmental maintenance.
5、聚氨酯發(fā)泡保溫鋼管。
5. Safety of polyurethane foamed insulating steel pipe.
聚氨酯發(fā)泡保溫鋼管從里到外分三層結(jié)構(gòu)：
Polyurethane foamed insulating steel pipe has three layers from inside to outside.
一層：義務(wù)鋼管層:根據(jù)設(shè)計(jì)和客戶的要求普通選用無縫鋼管、螺旋鋼管和直縫鋼管。鋼管表面經(jīng)過的拋丸除銹工藝處置后。
First layer: Compulsory steel pipe layer: Seamless steel pipe, spiral steel pipe and straight seam steel pipe are generally selected according to design and customer requirements. The surface of steel pipe has been treated by advanced shot peening and rust removal technology.
第二層：聚氨酯保溫層:用高壓發(fā)泡機(jī)在鋼管與外護(hù)層之間構(gòu)成的空腔中一次性注入硬質(zhì)聚氨酯泡沫塑料原液而成，即俗稱的“管中管發(fā)泡”。
The second layer is polyurethane insulation layer, which is made by injecting rigid polyurethane foam plastics into the cavity formed between the steel pipe and the outer cover with a high-pressure foaming machine, commonly known as "tube-in-tube foaming".
第三層：高密度聚乙烯維護(hù)層：預(yù)制成一定壁厚的黑色或黃色聚乙烯塑料管材。聚乙烯無臭，，手感似蠟，具有優(yōu)良的耐低溫功用，低運(yùn)用溫度可達(dá)-70～-100℃，化學(xué)動(dòng)搖性好，能耐大多數(shù)酸堿的腐蝕（不耐具有氧化性質(zhì)的酸），常溫下不溶于普通溶劑，吸水性小，但由于其爲(wèi)線性分子可緩慢溶于某些無機(jī)溶劑，且不發(fā)作溶脹，電絕緣功用優(yōu)良，其作用一是維護(hù)聚氨酯保溫層免遭機(jī)器硬物破壞，二是防腐、防水。
The third layer: high density polyethylene maintenance layer: Prefabricated a certain thickness of black or yellow polyethylene plastic pipe. Polyethylene is odorless, non-toxic, waxy-like and has excellent low-temperature resistance. The lowest operating temperature can reach - 70 ~100 C. It has good chemical shaking property and can resist corrosion of most acids and bases (not resistant to oxidizing acids). It is insoluble in ordinary solvents at room temperature and has little water absorption. However, because it is a linear molecule, it can slowly dissolve in some inorganic solvents, and does not swell, and has electrical insulation power. Excellent use, its role is to maintain polyurethane insulation layer from machine hardware damage, the second is anti-corrosion, waterproof.
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