钢丝网骨架复合管打压试验怎么做?压力标准与流程​

2025-09-18

在塑料管道系统中,钢丝网骨架复合管的安装质量至关重要,而打压试验是检验其密封性和承压能力的关键环节。那么,钢丝网骨架复合管打压试验究竟该怎么做呢?

首先是压力标准。一般来说,试验压力应为管道系统工作压力的1.5倍,但不得小于0.6MPa。例如,若系统工作压力为0.8MPa,试验压力则为1.2MPa。这一标准是基于管道的材质特性和使用要求确定的,确保在实际运行中能承受压力波动。

接着是流程。第一步,连接管道系统,确保所有接口密封良好,将试压泵与管道系统连接。第二步,注水排气,缓慢向管道内注水,同时打开管道高处的排气阀,排净空气后关闭排气阀。第三步,升压,用试压泵缓慢升压,升压时间不应少于10分钟,达到试验压力后,稳压10分钟,检查有无渗漏或异常变形。第四步,降压,将压力降至工作压力,稳压30分钟,进行外观检查,若无渗漏则判定为合格。

在打压试验过程中,要注意观察压力变化和管道状态。若出现压力急剧下降或管道渗漏,应立即停止试验,查明原因并修复后重新试验。只有严格按照压力标准和流程进行打压试验,才能确保钢丝网骨架复合管在投入使用后安全可靠地运行,为塑料管道系统的稳定工作提供保障。



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