聚氨酯保溫管不僅具有傳統(tǒng)地溝和架空敷設管道難以比擬的技術、實用性能，而且還具有顯著的社會效益和經(jīng)濟效益，也是供熱的有力措施。預制直埋保溫管采用直埋供熱管道技術，標志著供熱管道技術發(fā)展已經(jīng)進入了新的起點。 隨著世界能源的日益減少和需求日益增長，、減排、已成為全球發(fā)展的趨勢，和個地方政府也大力提倡、減排、產(chǎn)品的開發(fā)、應用及產(chǎn)業(yè)化，建筑業(yè)用聚氨酯硬泡體保溫材料是聚氨酯工業(yè)的一個重要分支，其特點是一材多用，同時具備保溫、防水等功能。該類產(chǎn)品自20世紀60年代在歐洲建筑業(yè)應用以來已有40年歷史，一些還通過立法把聚氨酯作為建筑業(yè)指定的保溫防水用材。
Polyurethane insulation pipe not only has the advanced technology and practical performance that traditional trench and overhead laying pipeline can't match, but also has remarkable social and economic benefits, which is also a powerful measure of heating and energy saving. The technology of directly buried heat supply pipeline is adopted for prefabricated directly buried thermal insulation pipe, which indicates that the development of heat supply pipeline technology in China has entered a new starting point. With the decreasing of energy and increasing demand in the world, energy conservation, emission reduction and environmental protection have become the trend of global development. The national and local governments also strongly advocate the development, application and industrialization of energy-saving, emission reduction and environmental protection products. Polyurethane rigid foam thermal insulation materials for construction industry is an important branch of polyurethane industry, which is characterized by multi-purpose, thermal insulation, thermal insulation, and so on Waterproof and other functions. This kind of product has been used in European construction industry for 40 years since 1960s. Some countries also take polyurethane as the insulation and waterproof material specified by the construction industry through legislation.
聚氨保溫管道中首當其沖的就是鋼套鋼保溫鋼管,它采用沒有混凝土結構的情況下也可以進行地下直埋的方式，即工作鋼管的熱膨脹在外管內(nèi)進行，從而降低了材料成本，縮短了施工日期，并保障了供熱管道的性，可以在不同溫度環(huán)境下更的廣泛應用，尤其適用于高溫蒸汽管道項目。使用溫度可達150℃-450℃ 鋼套鋼保溫管是由外護鋼管加鋼管防腐、聚氨酯泡沫保溫層及內(nèi)工作鋼管組合而成。鋼套鋼蒸氣復合保溫管適用于輸送2.5MPa、350攝氏度以下的蒸汽或其它介質(zhì)，該產(chǎn)品用鋼管做外防護層，具有強度高，不易損壞，施工檢修簡便，使用壽命長的優(yōu)點
The first thing to bear the brunt of the polyurethane insulation pipeline is the steel jacket steel insulated steel pipe, It can also be directly buried underground without concrete structure, that is, the thermal expansion of working steel pipe is carried out in the outer pipe, so as to reduce the material cost, shorten the construction date, and ensure the safety of the heat supply pipeline. It can be widely used in different temperature environment, especially for high temperature steam pipeline project. The steel sleeve steel insulation pipe with a temperature of up to 150 -450 C is made up of an external protective steel pipe, a steel pipe anticorrosion, a polyurethane foam insulation layer and an internal working steel pipe. Steel sleeve steel steam composite insulation pipe is suitable for conveying steam or other media below 2.5MPa and 350 ℃. The product uses steel pipe as outer protective layer, which has the advantages of high strength, easy maintenance and long service life.
鋼套鋼保溫管保溫結構依據(jù)滑動方式不同分為：內(nèi)滑動式與外滑動式 1、內(nèi)滑動式：保溫結構由工作鋼管、硅酸鋁、減阻層、微孔硅酸鈣、隔熱層、不銹鋼緊固鋼帶、鋁箔反射層、聚氨酯保溫層、外套鋼管、外防腐層組成。 2、外滑動式：保溫結構由工作鋼管、玻璃棉保溫隔熱層、鋁箔反射層、不銹鋼緊固帶、滑動導向支架、空氣保溫層、外護鋼管、外防腐層組成。
According to different sliding modes, the thermal insulation structure of steel sheathed steel insulation pipe is divided into internal sliding type and external sliding type. 1. Internal sliding type: the insulation structure is composed of working steel pipe, aluminum silicate, drag reducing layer, microporous calcium silicate, thermal insulation layer, stainless steel fastening steel strip, aluminum foil reflective layer, polyurethane insulation layer, outer steel pipe and external anti-corrosion coating. 2. External sliding type: the thermal insulation structure is composed of working steel pipe, glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening belt, sliding guide bracket, air insulation layer, external steel pipe and external anti-corrosion coating.
聚氨酯直埋保溫管由于具有恒久的耐腐蝕抗老化的特征，在應用中備受人們的歡迎，故而有著很大的需求市場存在，也因此對于聚氨酯保溫管的生產(chǎn)有著很大的生產(chǎn)數(shù)額要求。對于聚氨酯保溫管的生產(chǎn)加工，需要針對具體用途與結構進行處理。對于有內(nèi)管和外套管的保溫層實施，聚氨酯發(fā)泡保溫管通常是在兩管之間直接灌注發(fā)泡漿料，一次成型發(fā)泡。
Polyurethane directly buried insulation pipe has been widely welcomed because of its long history of corrosion resistance and anti-aging. Therefore, there is a great demand for the market. Therefore, there is a large demand for production of polyurethane insulation pipes. For the production and processing of polyurethane insulation pipe, it is necessary to deal with the specific use and structure. For the insulation layer with inner pipe and outer pipe, polyurethane foam insulation pipe is usually filled with foam slurry directly between the two pipes to form foam at one time.
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