http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
효과적인 PM 업무를 위한 RCM분석대상 시스템의 선정
김민호(Kim Min-ho),송기태(Song Kee-Tae),백영구(Baek Young-gu),이기서(Lee Key-Seo),윤화현(Yoon Hwa-Hyun) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Most operational organization and railway authority which conduct scheduled maintenance(SM) have carried out the preventive maintenance(PM) based on the information provided from supplier and manufacturer of railway system. However these activities are far away from reality and low the efficiency, it is because an appropriate methods for system selection didn"t take into account for improving maintenance efficiency. Therefore, the current SM tasks and maintenance activities lead to lots of spend on the cost and time. To solve the above problem, this thesis presents new approach methodology. This proposes the criteria for reliability centered maintenance(RCM) system selection through level of quantification of each parameter, i.e, frequency, severity and maintenance cost, etc. To do this, the field operation data and information of maintenance cost are essential. As applying this methodology, we can look forward to improving efficiency of PM/SM, and reducing cost.
지하철 터널 내 미세먼지 제거를 위한 하이브리드형 집진장치
우상희(Sang-Hee Woo),배귀남(Gwi-Nam Bae),김종범(Jong Bum Kim),김민락(Min Rak Kim),박형구(Hyung Gu Park),장홍량(Hong Ryang Jang),윤화현(Hwa-Hyun Yoon),황문세(Moon Se Hwang) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5
지하철은 터널을 주행하면서 바퀴와 휠의 마찰, 팬토그래프의 마찰 등에 의해 수많은 미세먼지를 생성하고, 생성된 미세먼지는 지하철 터널 내에서 빠져나가지 못하고 축적되어 지하철 운행에 의해 다시 재비산된다. 지하철 터널의 오염된 공기는 객차로 유입되어 승객의 건강에 나쁜 영향을 미치거나 전동차 장치들에 침착되어 고장의 주요 원인이 되기도 한다. 이러한 지하철 터널의 미세먼지를 줄이기 위해 전동차에 집진장치를 직접 부착하고 열차가 달리는 주행풍을 이용하여 미세먼지를 집진하고자 하였다. 지하철은 역과 역 사이를 오가며 속도가 항상 바뀌기 때문에, 이러한 유동속도를 모두 커버하기 위해서 관성집진기와 전기집진기를 결합한 하이브리드형 집진장치를 개발하였다. 하이브리드형 집진장치의 집진성능을 풍동에서 시험하고, 실제 전동차에 부착하여 미세먼지 포집량을 확인하였다. A lot of particles were generated by friction of train wheel and railway or pantograph during subway traveling in underground tunnel. Then generated particles could not escape from underground tunnel and it accumulated in subway tunnel and re-suspended by subway moving. Contaminated air in underground tunnel come to be cause of bad effect for train passengers and electrical device trouble. To decrease particles in underground tunnel, dust collector was installed at under the train to use the train wind. The subway speed was changed during it traveling station to station. Then dust collector installed at under the train should be considering the various train wind speed conditions. Therefore, in this study, hybrid dust collector which merging electrostatic precipitator and inertial collector was designed. Collection efficiency of hybrid dust collector was tested in wind tunnel and it installed at under the train to check how many dust was collected by hybrid dust collector.