喷射火对输油管道热影响实验平台设计与验证

Design and validation of experimental platform for thermal effect of jet fire on oil pipelines

为研究油气并行管道中,天然气管道喷射火对相邻输油管道内流体与管壁的热影响,设计并搭建天然气喷射火对输油管道热影响实验平台。实验平台由环道及冷却系统、火焰系统、控制及数据采集系统3个部分组成。完成平台搭建并验证环道系统气密性后,以0#柴油为介质,开展验证实验。研究结果表明:火焰系统工作可靠且可控,冷却系统能够将柴油温度控制在初馏点以下,数据采集系统能够正常采集油品压力、温度、流量、管壁温度、火焰温度等预定数据,实验平台具备一定可行性与安全性。实验平台可进行在不同管道规格及材质、火灾形式、油品介质及流速条件下的热影响实验。实验平台结合材料性能进行测试,可研究喷射火对管材性能的影响,为油气并行管道的安全运行提供相关实验依据。

In order to study the thermal effect of jet fire from natural gas pipeline on the fluid and pipe wall in adjacent oil pipeline for the parallel oil and gas pipelines,an experimental platform for the thermal effect of natural gas jet fire on oil pipeline was designed and built.The platform consisted of three parts:loop&cooling system,flame system,and control&data acquisition system.After completing the platform establishment and verifying the airtightness of loop system,the verification experiments were carried out with 0#diesel as the medium.The results showed that the flame system was reliable and controllable,the cooling system could control the diesel temperature below the initial boiling point,the data acquisition system could normally collect the predetermined data such as oil pressure,temperature,flow rate,pipe wall temperature and flame temperature,which verified the feasibility and safety of the experimental platform.Through changing the pipe,combustion medium and oil medium,the experimental platform could carry out the thermal effect experiments under different pipe specifications and material,fire form,oil medium and flow rate conditions.The experimental platform can be used to study the influence of jet fire on the performance of pipe materials combined with material performance tests,and provide relevant experimental basis for the safe operation of parallel oil and gas pipelines.