Dissertation > Industrial Technology > Oil and gas industry > Oil machinery and equipment and automation > Drilling machinery equipment > Circulatory system devices

Service Life Analysis of Drilling Pump Valve and Research on Vibration Control of Piping System

Author QiaoJian
Tutor YangGuoAn
School Beijing University of Chemical Technology
Course Chemical Process Equipment
Keywords Drilling pump pump valve Fatigue life Stress concentration Pipeline vibration Damping measures
Type Master's thesis
Year 2010
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The contents of the thesis is divided into two parts , the first part of the pump and valve life analysis of drilling pump . By drilling pump pump valve fatigue life , further clarify the failure mechanism of the pump and valve . Valve three-dimensional solid model , using ANSYS / LS-DYNA software build process the analog valve plate impact seat , the valve disc stress maps that analysis to the pulsating cyclic stress on the pump and valve fatigue damage . The analysis focuses on considering alternating loads , stress concentration brought the dangers of the the acceleration pump valve failure , to improve valve no impact theory . Estimate based on the the pump valve fatigue life curve , the service life of the pump and valve , and proposed new program a pump valve structure improvements , to some extent slowed the stress concentration further extend the pump and valve guide pump and valve design , life has a certain reference value . Another part of the paper is the pipeline damping method research . Serious for a factory centrifugal compressor outlet line vibration , resulting in the production frequent stops , not running smoothly , CAESAR Ⅱ and MATLAB software dynamic characteristics ( natural frequency of the air column , air flow pulsation ) of the gas pipeline system , the dynamic characteristics ( mechanical natural frequencies , mode shapes ) and stress conditions ( stress , secondary stress ) to do a detailed accounting . Combined with the results of the site visit , the main analysis to determine what caused the pipe vibration , and the corresponding damping measures . The face of conditions caused by the temperature load compressor nozzle force is too large , and a variety of ways to reduce the force , so to reach the equipment operational requirements . In this paper, damping optimized design methods and specific transformation measures can be directly applied to the actual plant .

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