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聚氨酯保温材料施工中应注意的细节

来源:http://www.jnhscg.com 日期:2022-09-14

很多时候,埋在地下的预制直接埋入式保温材料的许多安全事故都是因为在建造过程中保温材料的裸露部分没有密封引起的。由于缺乏密封性,水进入保温层并破坏保温结构,导致保温接缝的外保护层脱落,钢管腐蚀终导致管道泄漏和安全事故。所谓避免遇到风险,就需要在施工时注意多方面的细节。下面济南彩钢夹芯板厂就来为您讲解。

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.

聚氨酯保温材料须确保施工期间管道的密封性能,在接缝施工过程中,如果水从接缝处进入保温层,则水蒸气将在管网的高温运行过程中使保温层碳化。在接头中,接头中的水会逐渐破坏接头外部保护层的密封效果。一旦接头密封破裂,外部水就会进入保温层,导致保温层不断碳化并延伸到两侧。地下水与钢管的直接接触会迅速腐蚀管道,从而影响保温材料的使用寿命和管网的安全性。

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(例如端套和收缩端盖)通过直接埋入的隔热管系统的隔热材料来密封盲端和墙的裸露位置并使其防水。埋地管道的折角对管道的安全性影响很大,在管道安装过程中,如果出现临时弯曲,则拐角处的管道应力将发生变化。在继续施工之前,设计单位有要重新计算并确定力的范围,并采取相应的措施。

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.

在冬季施工期间,较低的环境温度会影响界面保温和发泡的质量,因此应尽可能避免冬季施工。如果是非要在冬季施工,那么可以在接头处发泡之前,对工作钢管,外保护管和发泡原料的表面提前进行加热,然后进行保温和发泡。

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.

如果不去除浸泡过的保温材料,则在管网高温运行期间,由于管网温度升高,保温层中残留的水将蒸发,从而导致保温层碳化并损坏绝缘层。

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.

外侧保护层与保温材料两侧的重叠长度不应小于100mm,以确保接头的外侧保护层的强度和紧密性。特别是对于热熔焊接接头,外保护层的焊接区域应与保温材料的外保护管完全重叠,以确保熔焊的质量和密封性。

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.

以上是聚氨酯保温材料施工中应注意的细节,希望能帮助您了解此类建设项目中应注意的步骤和事项,并做好各环节的验收工作,从而为保温工程获得可靠的质量保证,如果有帮助的话可以来我们网站http://www.jnhscg.com分享交流体会!

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.jnhscg.com Share your experience!


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