Shi Huining, Yao Hongxing, Ding Jiandong, Meng Xianhong, Wang Rui, Chen Jinfang. PREDICT REMAINING LIFETIME OF PUMP ROD BY ULTRASONIC SIGNAL[J]. Oil Drilling & Production Technology, 2005, 27(3): 51-53. DOI: 10.3969/j.issn.1000-7393.2005.03.018
Citation: Shi Huining, Yao Hongxing, Ding Jiandong, Meng Xianhong, Wang Rui, Chen Jinfang. PREDICT REMAINING LIFETIME OF PUMP ROD BY ULTRASONIC SIGNAL[J]. Oil Drilling & Production Technology, 2005, 27(3): 51-53. DOI: 10.3969/j.issn.1000-7393.2005.03.018
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PREDICT REMAINING LIFETIME OF PUMP ROD BY ULTRASONIC SIGNAL

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  • No research theory of remaining lifetime of pump rod can be used to in-situ, and can not diagnose it remaining lifetime by engineering examine at present. From endurance testing of pump rod, fined change rules of leading edge of cracking, obtained relationship between depth and area of crack and relationship of crack area and remaining life, use Paris formula, established relation of ultrasonic inspection and crack depth, and relation of crack detection signal and crack spread law, proposed predict method of remaining lifetime of pump rod by ultrasonic inspection. Compared results of remaining lifetime by simulated test and theory predict, indicate it was coincide more than 84%.
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