浅谈聚氨酯直埋式保温管在供热管网中的应用

针对传统的供热管道在地沟敷设方法中存在的弊病，提出了聚氨酯直埋式保温管的敷设方式，并就施工过程中遇到的热伸长问题提出了有效的解决措施及减小管道热伸长的办法，介绍了管道敷设施工中的具体要求，通过工程实践，显示出了聚氨酯直埋式保温管敷设方式的优越性。

Simple discuss on the application of chitosan heat insulating pipe in direct covering in heating pipe net

According to the common faults of ground ditch laying way in traditional heat pipe the paper proposes a laying way as chitosan heat insulating pipe in direct covering. And to the problem in the construction an effective solving measure is proposed to reduce the thermal extension of pipes. The concrete demands in construction for pipe laying are introduced. Through the engineering practice the advantages of the laying way of chitosan heat insulating pipe in direct covering are demonstrated.