Four High Rolling Mill Hydraulic Pipeline Vibration Fault Diagnosis And Analysis

Status of iron and steel industry in national economy has been growingsignificantly important and is valued by more and more mill is an important link in theiron and steel industry, squeeze out the quality of the steel plate by a direct impact on theperformance of mill work. Influenced by various factors in the actual production, rollingmill hydraulic system pipeline vibration blowout accident easily, which not only increasedthe into the potential safety hazard in the process of production will bring incalculableeconomic loss. So the system of rolling mill hydraulic system analysis research pipelinevibration mechanism is urgently needed.In iron and steel mill production may actually happened pipe elbow, accumulator andso on the vibration of the weak links and burst oil spill accident, forcing mill downtimewill not work for a time. After analysis diagnosis found part is the main cause of vibrationhydraulic system, so this article will be before the valve in the hydraulic system pipeline,accumulator and pump as well as mill press link study and put forward effective solutions.This paper first analyses the vibration mechanism of the valve pipe before: usingimpedance analysis was carried out on the line impedance, and calculate thecorresponding pipeline resonance length, for the follow-up design and provide referencefor how to avoid the resonance length; Line of fluid-solid coupling model is introduced,this model as reference of pipeline vibration numerical model is established, thefluid-structure interaction analysis must also consider the plunger pump outlet flowpulsation in the constraint conditions and support. Analysis of accumulator parametersSettings: overview on the analysis of the lack of traditional accumulator parameter settingmethod from the whole hydraulic system model is proposed on the basis of theaccumulator parameters optimization method. Mill press hydraulic system modelinganalysis: the parts of the system structure and control strategy were analyzed, and usingSimulink software simulation analysis of the causes of pipe rolling mill vibration, explainthe theory of using the phenomenon.System summary of the analysis of the cause, the mechanism of pipeline vibrationand the vibration fault of puts forward the measures and Suggestions to solve theseproblems.