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国内的供热管道一直以来都存在着运行条件复杂、维护管理不到位、超龄服役等现象。以地处东北高寒地区的哈尔滨市为例,冬季最低气温可达-40℃,供暖时间长达半年。城区服役多年的管道,相当一部分因严重老化已进入事故高发期。新建集中供热管道,虽然不存在老化问题,但阀门和补偿器等管件都深埋于地下,安全隐患难于发现和排除。
Domestic heating pipelines have always been running complicated conditions, maintenance and management are not in place, over-service and so on. Taking Harbin in the northeastern alpine region as an example, the minimum temperature in winter can reach -40 ℃ and the heating time can be as long as six months. Years of urban service pipeline, a considerable part of the serious aging has entered the high incidence of accidents. Newly built central heating pipe, although there is no aging problem, but the valves and compensators and other pipe fittings are buried in the ground, difficult to find and eliminate security risks.