国产精品午夜片在线观看

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當前位置:小區供暖保溫管道首頁 > 供熱保溫鋼管 > 供熱管道用保溫鋼管

供熱管道用保溫鋼管

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產品介紹

供熱管道用保溫鋼管保溫材料多層錯縫包扎,有效減少了熱損失,同時控制外套表面措施,防止了冷橋的產生,從而使外套防腐層的溫度控制得到了保證。

熱電廠供熱預制直埋保溫鋼管用保溫材料包扎多層鋁箔反射層,有效減少了熱損失,使蒸汽管道更加經濟合理。

外套鋼管防腐采用防腐涂層與陰極保護聯合防護,使防腐壽命可大大增加。

疏水系統采用的形式,布置靈活,結構合理,安全可靠。鋼套管上的排潮管既能及時排出潮濕氣體,又可作為日常運行的報警信號管。

集中供熱保溫鋼管的熱補償采用波紋管補償器,并將其裝設在套管內,做成直埋形式,無須設置觀察井,施工操作方便、工期短。

國標預制直埋聚氨酯保溫管采用高功能聚醚多元醇和多次甲基多苯基多黑料為主要原料,在催化劑、發泡劑、表面活性劑等作用下,經化學反映發泡而成。聚氨酯產品具有容量輕、強度高、絕熱、隔音、阻燃、耐寒、防腐、不吸水、施工簡便快捷等優異特點,已成為建筑、運輸、石油、化工、電力、冷藏等工業部門絕熱保溫、防水堵漏、密封等不可缺少的材料。

供熱管道用保溫鋼管

熱力輸送用保溫鋼管的優點:

    1、降低工程造價。據有關部門測算,雙管制供熱管道,一般情況下可以降低工程造價的25%(采用玻璃鋼做保護層)和10%(采用高密度聚乙烯做保護層)左右。

    2、熱損耗低,節約能源。直埋保溫管其導熱系數為:λ=0.013—0.03kcal/m·h·oC,比其他過去常用的管道保溫材料低得多,保溫效果提高4~9倍。再有其吸水率很低,約為0.2kg/m2。吸水率低的原因是由于聚氨酯泡沫的閉孔率高達92%左右。低導熱系數和低吸水率,加上保溫層和外面防水性能好的高密度聚乙烯或玻璃鋼保護殼,改變了傳統地溝敷設供熱管道“穿濕棉襖”的狀況,大大減少了供熱管道的整體熱損耗,熱網熱損失為2%,小于國際10%的標準要求。

    3、防腐,絕緣性能好,使用壽命長。直埋保溫管由于聚氨酯硬質泡沫保溫層緊密地粘結在鋼管外皮,隔絕了空氣和水的滲入,能起到良好的防腐作用。同時它的發泡孔都是閉合的,吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有良好的防腐、絕緣和機械性能。因此,工作鋼管外皮很難受到外界空氣和水的侵蝕。只要管道內部水質處理好,據國外資料介紹,直埋保溫管的使用壽命可達50年以上,比傳統的地溝敷設、架空敷設使用壽命高3~4倍。

    4、占地少,施工快,有利環境保護和減少施工擾民。直埋供熱管道不需要砌筑龐大的地溝,只需將保溫管埋人地下,因此大大減少了工程占地,減少土方開挖量約50%以上,減少土建砌筑和混凝土量90%。同時,保溫管加工和現場挖溝平行進行,只需現場接頭,可以大幅度縮短工期。由于減少了磚、水泥、砂石、余土等的運輸,從而減少了施工過程中汽車尾氣排放量、揚塵量、噪聲排放量,從而保護了環境。

    5、安全。目前除中國外生產的直埋保溫管,均設有滲漏報警線,一旦管道某處發生滲漏,通過報警線的傳導,便可在專用檢測儀表上顯示出保溫管道滲水、漏水的準確位置及滲漏程度的大小,以便通知檢滲人員迅速處理漏水的管段,保證供熱管網的安全運行。國內生產的保溫管目前末設滲漏報警線,有待補上這一空白。


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    国产精品午夜片在线观看
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