基于SPS的成品油库汽车发油系统水击瞬态分析

Water Hammer Transient Analysis of the Oil Tank Vehicle Oil Dispensing System Based on SPS

成品油库工艺系统的水击破坏往往不被人们所重视,以某成品油库为例,应用SPS软件建立了油库汽车发油系统物理模型和控制关系,数值模拟了变频泵机组不同发油工况,管线水击压力的变化情况。研究表明：当6鹤管中同时有1-2鹤管发油结束,工艺系统产生的水击压力较小;当6鹤管中同时有3-4个鹤管发油结束,发油系统水击压力增大明显,最大水击压力可达1.15 MPa;当6鹤管同时发油结束,阀门关闭瞬间,水击压力超过系统设计压力,虽然持续时间较短,但系统长期从事类似的操作,会对管线、阀门、尤其是仪表设备造成一定的破坏,适当增加泄压工艺是防止水击破坏的有效措施。

The water hammer damage of refined oil dispensing system in oil depots is always ignored. In this paper, taking a refined oil depot as an example, physical model and control relationships of vehicle dispensing oil system was established by SPS software. Under different oil dispensing condition of variable frequency pump, numerical simulation of pipeline water hammer pressure change was carried out. The results show that： when 1-2 crane tubes among the 6 crane tubes stop oil filling, the water hammer pressure produced in the process system is smaller; when 3-4 crane tubes among the 6 crane tubes stop oil filling, the water hammer pressure produced in the process system increases significantly, the maximum water hammer pressure is up to 1.15 MPa; when 6 crane tubes all stop oil filling, the valve is closed instantly, the water hammer pressure exceeds the design pressure, although the time is short, but the long-term similar operations will cause pipes, valves, especially instrument equipments damage, it＇s pointed out that it is appropriate to add the discharge pressure process to prevent water hammer damage.