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常减压蒸馏装置减压塔底泵进出口管线应力分析 被引量:3

Stress analysis of piping of vacuum tower bottom pump in crude distillation unit
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摘要 为了确保泵口所受荷载不超过其允许值,需要对连接泵口的管系进行模拟分析。运用应力分析软件,分别模拟了冷态和热态时管系对减压塔底泵口的所受荷载状况;研究了泵口受到较大推力的原因,进而得到了能有效降低泵口所受荷载的配管方式。结果表明:进口管线配管不当(泵进口所受荷载超过了API610标准的7倍以上)是造成泵口泄漏的主要原因。同时指出:减压塔底泵进出口配管选用以下型式可有效地降低泵口所受荷载:①进口采用泵侧边布管并且采用T型过滤器加弯头与泵口直接连接,在过滤器处设弹簧支架;②出口采用回型弯,在回型弯的地面支撑处设支架。更改配管方式后,减压塔底泵口的荷载都降至API610标准的3倍左右。 To ensure that the force on the pump nozzle doesn' t exceed its allowable value, it is necessary to have a detailed simulation analysis of the piping connecting pump nozzle. The stress analysis software is applied to simulate the forces on the vacuum tower bottom pump nozzle in cold and hot conditions, the causes of greater thrust to the pump are studied and the piping design which can effectively lower the loire on the pump nozzle is developed. The results show that inappropriate piping design of pump nozzle (the force on pump nozzle is 7 times higher than the specification in standard API610) is the culprit of leaking of pump nozzles. It is also pointed out that the following designs can be adopted for the inlet and outlet piping of vacuum tower bottom pump to effectively reduce the force and torque of pump nozzles: ( 1 ) the pump suction nozzle can be placed beside the pump, and the pump nozzle is connected with T filter with bend, and the spring support is installed at the filter; (2) elbow can be provided at the pump discharge nozzle, and the support is installed on the ground at the elbow. By changing the piping design, the load on the bottom pump nozzle has been lowered to about 3 times the specification of standard API610.
作者 罗伟军 刘睿
出处 《炼油技术与工程》 CAS 2013年第3期40-44,共5页 Petroleum Refinery Engineering
关键词 泵口 应力分析 配管 端点附加位移 pump nozzle, stress analysis, piping design, additional displacement of nozzles
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