The utility model discloses a negative pressure pipeline under high temperature environment, belonging to the technical field of anticorrosive pipeline. The utility model comprises a steel tube on the outer layer, and a polytetrafluoroethylene pipe which is lined with the inner wall of the steel pipe, and the inner part of the polytetrafluoroethylene tube is provided with a circle of steel wire mesh interlayer. By setting a circle of steel wire mesh interlayer in the PTFE tube, it can significantly improve the negative pressure resistance of the steel lined tetrafluoroethylene tube. Under the conditions of high temperature and negative pressure, the deformation degree is small and no cracking. The outer steel pipe can not only play a protective role but also withstand positive pressure. The polytetrafluoroethylene tube is made of polytetrafluoroethylene tube and polytetrafluoroethylene. The outer tube is composed of steel wire mesh and interlayer, and the steel wire interlayer is integrated with the polytetrafluoroethylene tube. It is convenient to be processed and has higher strength. The effect of high temperature resistance and negative pressure is better. Under the condition of high temperature at 220 C and the pressure condition of 0.09Mpa, it can still work normally.
【技术实现步骤摘要】
一种高温环境下耐负压管道
本技术涉及一种高温环境下耐负压管道,属于防腐管道
技术介绍
钢衬四氟(PTFE)管主要是在碳钢或者不锈钢管道的内壁衬上聚四氟乙烯(PTFE)氟塑料,在碳钢管内壁衬上聚四氟乙烯(PTFE)材料后能极高的提高管道的防腐性能。目前,钢衬四氟管存在不耐负压的缺点,这是由于内衬的聚四氟乙烯管在高温条件下比较柔软,在高温、负压条件下,聚四氟乙烯管会产生严重的变形,引起管道流量减小。
技术实现思路
本技术所要解决的技术问题在于:提供一种高温环境下耐负压管道,它解决了钢衬四氟管中内层的聚四氟乙烯管比较柔软,在高温、负压条件下会产生严重变形的问题。本技术所要解决的技术问题采取以下技术方案来实现:一种高温环境下耐负压管道,它包括外层的钢管,以及衬在钢管内壁的聚四氟乙烯管,所述聚四氟乙烯管内部设有一圈钢丝网夹层。作为优选实例,所述聚四氟乙烯管由聚四氟乙烯内管和聚四氟乙烯外管构成,钢丝网夹层由钢丝正反缠绕在聚四氟乙烯内管外壁形成,再将缠绕钢丝网夹层的聚四氟乙烯内管同轴线放入聚四氟乙烯外管中,两者接触面通过热熔固定在一起。本技术的有益效果是:通过在聚四氟乙烯 ...
【技术保护点】
一种高温环境下耐负压管道,其特征在于:它包括外层的钢管,以及衬在钢管内壁的聚四氟乙烯管,所述聚四氟乙烯管内部设有一圈钢丝网夹层。
【技术特征摘要】
1.一种高温环境下耐负压管道,其特征在于:它包括外层的钢管,以及衬在钢管内壁的聚四氟乙烯管,所述聚四氟乙烯管内部设有一圈钢丝网夹层。2.根据权利要求1所述一种高温环境下耐负压管道,其特征在于:所...
【专利技术属性】
技术研发人员:王陈茫,
申请(专利权)人:上海铁氟龙防腐设备有限公司,
类型:新型
国别省市:上海,31
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