Abstract
Due to the periodic movement of the piston in the reciprocating pump, the fluid will cause a pressure pulsation, and the resulting pipeline vibration may lead to instrument distortion, pipe failure and equipment damage. Therefore, it is necessary to study the vibration phenomena of reciprocating pump pipelines based on pressure pulsation theory. This paper starts from the reciprocating pump pipe pressure pulsation caused by a fluid, pressure pulsation in the pipeline and the unbalanced exciting force is calculated under the action of the reciprocating pump. Then, the numerical simulation model is established based on the pipe beam model, and the rationality of the numerical simulation method is verified by indoor experiments. Finally, a case study is taken as an example to analyze the vibration law of the pipeline system, and vibration reduction measures are proposed. The following main conclusions are drawn from the analysis: (1) unbalanced exciting forces are produced in the elbows or tee joints, and it can also influence the straight pipe to different levels; (2) in actual engineering, it should be possible to prevent the simultaneous settlement of multiple places; (3) the vibration amplitude increases with the pipe thermal stress, and when the oil temperature is higher than 85 °C, it had a greater influence on the vertical vibration amplitude of the pipe.
Highlights
At present, oil is still the mainstream of the energy industry, and pipelines are the main way of oil transportation
(2) the unbalanced exciting force is generated at the elbow, the vibration of the straight by 1–10%)
(2) the unbalanced exciting force is generated at the elbow, the vibration of the straight pipeand is affected varying degrees
Summary
Oil is still the mainstream of the energy industry, and pipelines are the main way of oil transportation. Vibration analysis is necessary before pipeline systems with reciprocating pumps are put into operation This area of research has important engineering significance to ensure the safe and stable operation of pipelines in oil stations. In 2009, Chen used the electro-acoustic analogy method which regards a pipe unit as a circuit to analyze the vibration of pipelines in reciprocating compressor systems; this method is convenient and fast, but it can only be used to calculate the frequency of the pipeline [6]. The vibration analysis method of a reciprocating pump is established based on the pressure pulsation theory, a simple pipeline is designed, and the analytical method is verified. This method is used analyze reduction the vibration of the actual pipeline of an oil station and measures for vibration reduction are put forward
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