CAJ | 학술논문

往复泵在石油石化行业应用十分广泛，常常在高压环境下输送大密度、高黏度以及高含砂量的液体。泵阀是往复泵液力端最易损坏的部件之一，它的运行状态能直接影响着往复泵的容积效率和工作可靠性。本文针对BW-250型往复泵液力端泵阀弹簧断裂、阀盘磨损和活塞磨损这三类故障进行失效分析，通过在泵阀上安装加速度和位移传感器对泵阀状态进行实时监测，并对阀内外测得的振动信号进行量化对比分析，采用盲源分离技术提取故障特征信号。结果表明，BW-250型往复泵液力端活塞磨损的加剧导致泵阀吸入和排出压力不稳定，进而导致阀盘和弹簧故障的加剧，初步揭示了BW-250型往复泵液力端关键部件故障萌生和演化、发展的特点和规律，这对于往复泵液力端故障机理研究工作的进一步推进，提高易损件使用寿命具有重要意义。
왕복빙재석유석화행업응용십분엄범，상상재고압배경하수송대밀도、고점도이급고함사량적액체。빙벌시왕복빙액력단최역손배적부건지일，타적운행상태능직접영향착왕복빙적용적효솔화공작가고성。본문침대BW-250형왕복빙액력단빙벌탄황단렬、벌반마손화활새마손저삼류고장진행실효분석，통과재빙벌상안장가속도화위이전감기대빙벌상태진행실시감측，병대벌내외측득적진동신호진행양화대비분석，채용맹원분리기술제취고장특정신호。결과표명，BW-250형왕복빙액력단활새마손적가극도치빙벌흡입화배출압력불은정，진이도치벌반화탄황고장적가극，초보게시료BW-250형왕복빙액력단관건부건고장맹생화연화、발전적특점화규률，저대우왕복빙액력단고장궤리연구공작적진일보추진，제고역손건사용수명구유중요의의。
Reciprocating pump is widely used in petroleum and petrochemical industry,it often transports liquid of high density,high viscosity and high sand content under high-pressure. Pump valve is one of the parts that are damaged most easily in the reciprocating pump hydraulic end. Its operation state will directly influence pump volumetric efficiency and working reliability. This paper discusses three breakdowns of BW-250 reciprocating pump hydraulic end,including spring break,valve disc wear and piston wear. Acceleration and displacement sensors were installed in the pump valve for real-time monitoring its state. Valve internal and external vibration signal characteristics were quantitatively analyzed and extracted by blind source separation. The result showed that aggravation of piston wear caused instability of pump suction and discharge pressure,which led to intensified valve disc and spring failure. Initiation and evolution of key component damage of BW-250 reciprocating pump hydraulic end was revealed,which could promote further research on failure mechanism and increase service life of pump valve.