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    聚氨酯保溫材料施工中應注意的細節

    來源:http://www.atvolunteers.com 日期:2022-09-14

    很多時候,埋在地下的預制直接埋入式保溫材料的許多安全事故都是因為在建造過程中保溫材料的裸露部分沒有密封引起的。由于缺乏密封性,水進入保溫層并破壞保溫結構,導致保溫接縫的外保護層脫落,鋼管腐蝕終導致管道泄漏和安全事故。所謂避免遇到風險,就需要在施工時注意多方面的細節。下面濟南彩鋼夾芯板廠就來為您講解。

    In many cases, many safety accidents of the prefabricated directly buried thermal insulation materials buried underground are caused by the unsealed exposed parts of the thermal insulation materials during the construction process. Due to the lack of sealing, water enters the insulation layer and damages the insulation structure, leading to the fall off of the external protective layer of the insulation joint, and steel pipe corrosion eventually leads to pipeline leakage and safety accidents. To avoid risks, we need to pay attention to various details during construction. Now Jinan Color Steel Sandwich Panel Factory will explain it to you.

    聚氨酯保溫材料須確保施工期間管道的密封性能,在接縫施工過程中,如果水從接縫處進入保溫層,則水蒸氣將在管網的高溫運行過程中使保溫層碳化。在接頭中,接頭中的水會逐漸破壞接頭外部保護層的密封效果。一旦接頭密封破裂,外部水就會進入保溫層,導致保溫層不斷碳化并延伸到兩側。地下水與鋼管的直接接觸會迅速腐蝕管道,從而影響保溫材料的使用壽命和管網的安全性。

    Polyurethane insulation materials must ensure the sealing performance of the pipeline during construction. During joint construction, if water enters the insulation layer from the joint, the water vapor will carbonize the insulation layer during the high-temperature operation of the pipe network. In the joint, the water in the joint will gradually destroy the sealing effect of the external protective layer of the joint. Once the joint seal is broken, external water will enter the insulation layer, causing the insulation layer to continuously carbonize and extend to both sides. The direct contact between underground water and steel pipe will quickly corrode the pipe, thus affecting the service life of insulation materials and the safety of the pipe network.

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    可以使用特殊配件(例如端套和收縮端蓋)通過直接埋入的隔熱管系統的隔熱材料來密封盲端和墻的裸露位置并使其防水。埋地管道的折角對管道的安全性影響很大,在管道安裝過程中,如果出現臨時彎曲,則拐角處的管道應力將發生變化。在繼續施工之前,設計單位有要重新計算并確定力的范圍,并采取相應的措施。

    Special fittings, such as end sleeves and shrink end caps, can be used to seal the exposed locations of blind ends and walls and make them waterproof through the insulation materials of directly buried insulation pipe systems. The corner of the buried pipeline has a great impact on the safety of the pipeline. In the process of pipeline installation, if there is temporary bending, the stress of the pipeline at the corner will change. Before continuing the construction, the design unit shall recalculate and determine the force range, and take corresponding measures.

    在冬季施工期間,較低的環境溫度會影響界面保溫和發泡的質量,因此應盡可能避免冬季施工。如果是非要在冬季施工,那么可以在接頭處發泡之前,對工作鋼管,外保護管和發泡原料的表面提前進行加熱,然后進行保溫和發泡。

    During winter construction, lower ambient temperature will affect the quality of interface insulation and foaming, so winter construction should be avoided as much as possible. If it is necessary to construct in winter, the surface of the working steel pipe, outer protective pipe and foaming raw material can be heated in advance before foaming at the joint, and then insulation and foaming can be carried out.

    如果不去除浸泡過的保溫材料,則在管網高溫運行期間,由于管網溫度升高,保溫層中殘留的水將蒸發,從而導致保溫層碳化并損壞絕緣層。

    If the soaked insulation materials are not removed, the residual water in the insulation layer will evaporate due to the rising temperature of the pipe network during the high-temperature operation of the pipe network, which will lead to the carbonization of the insulation layer and damage of the insulation layer.

    外側保護層與保溫材料兩側的重疊長度不應小于100mm,以確保接頭的外側保護層的強度和緊密性。特別是對于熱熔焊接接頭,外保護層的焊接區域應與保溫材料的外保護管完全重疊,以確保熔焊的質量和密封性。

    The overlapping length of the outer protective layer and both sides of the thermal insulation material shall not be less than 100mm to ensure the strength and tightness of the outer protective layer of the joint. Especially for hot-melt welded joints, the welding area of the outer protective layer shall be completely overlapped with the outer protective tube of the thermal insulation material to ensure the quality and sealing of the fusion welding.

    以上是聚氨酯保溫材料施工中應注意的細節,希望能幫助您了解此類建設項目中應注意的步驟和事項,并做好各環節的驗收工作,從而為保溫工程獲得可靠的質量保證,如果有幫助的話可以來我們網站http://www.atvolunteers.com分享交流體會!

    The above are the details that should be paid attention to in the construction of polyurethane thermal insulation materials. I hope it can help you understand the steps and matters that should be paid attention to in such construction projects, and do a good job in the acceptance of each link, so as to obtain reliable quality assurance for the thermal insulation project. If it is helpful, you can come to our website http://www.atvolunteers.com Share your experience!


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