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[1]樊三新,刘玉玲,楚威威.高寒地区管道低温水试压方法[J].油气储运,,30():73-075.[doi:10.6047/j.issn.1000-8241.2011.01.020]
 Fan Sanxin,Liu Yuling,Chu Weiwei.Pipeline hydrotest method of cold water in frigid zone[J].Oil & Gas Storage and Transportation,,30():73-075.[doi:10.6047/j.issn.1000-8241.2011.01.020]

高寒地区管道低温水试压方法    ( 打印/导出/复制)
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[摘要]相对于空气试压法,在高寒低温地区对油气管道进行水试压具有更高的安全性,但需要解决水冻结问题,防冻措施主要包括:采取电伴热系统对试压水进行自动加热,在试压头两端搭建临时御寒
帐篷,配备取暖设备等。在试压过程中,采用高压泵对管道升压,通过内置式成套电热系统确保管道温度,利用两台注水量为 100 m3/h,扬程为 101 m 的注水泵向管道注水,并多次发射泡沫清管器清除残水,确保管道内无明水。在不同环境温度下的模拟试验表明:高寒低温地区管道水试压采用电伴热技术可以满足 SY 0401-98 《输油输气管道线路工程施工及验收规范》中规定的试压验收标准,适用于高寒地区管道分段水试压,完善了高寒地区管道施工技术。
[中图分类号]TE863[文献标志码] A [doi]A
Fan SanxinLiu YulingChu Weiwei Fan Sanxin:PetroChina Daqing Oilfield Construction Ltd., Daqing,Heilongjiang,163712.
[Abstract]Compared with the air pressure test method,it is more secure to use hydrotest method for oil and gas pipelines in frigid zone. However,the problem in water freezing must be solved. The main anti-freezing measure include:the automatical water heating with electric tracer heating system in pipe pressure test process,the temporary tents used to keep warm at both ends of pressure test segment,and heating installation equipments etc. In the process of hydrotest,the pressure boost of pipeline is done by using high pressure pumps,a complete set of built-in electric heating system is used to ensure the pipeline temperature,two water-injection pumps with the flow rate in 100 m3/h and discharge head in 101 m are used to inject water into pipe,and foam pigs are sent repeatedly to remove residual water to clean the accumulated water in pipeline. The simulation experiments under different environmental temperatures show that the hydrotest technology of cold water with electric tracer heating system is in accordance with the specified acceptance criteria in SY 0401-98 Standard for Construction and Acceptance of Oil and Natural Gas Pipeline Project. It is suitable for pipeline segment hydrotest in frigid zone,which can improve the pipeline construction technology in frigid zone.

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高寒低温地区油气管道水试压技术是油气管道施工的关键技术之一。相对于空气试验方法,在高压状态下,水的膨胀系数较小,即使管道破裂对周围环境的损害也较小,因此使管道水试压技术的安全问题
得到了保证。但是,水试压适宜的环境温度高于 5 ℃,否则应采取严格的防冻措施。冬季在高寒地区对管道进行水压试验,应采取电伴热,试压头两端搭建临时御寒帐篷并配备取暖设备等诸多防冻措施,以避免试压管道结冰。
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