유전상수 센서를 이용한 유압 작동유의 분석을 위한 실험장비 개발
Development of Experimental Device for Analysis of Hydraulic Oil Characteristics with Dielectric Constant Sensors
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
An experimental device was developed for analysis of hydraulic oil characteristics with dielectric constant sensors. Online analysis is the most effective method of the three methods used for analyzing lubricant oils. This is because it can monitor the machine condition effectively using oil sensors in real time without requiring excellent analysis skill and eliminates human errors. Determining the oil quality usually requires complex laboratory equipment for measuring factors such as density, viscosity, base number, acid number, water content, additive, and wear debris. However, the electric constant is another indicator of oil quality that can be measured on-site. The electric constant is the ratio of the capacitance of a capacitor using that material as a dielectric, compared with a similar capacitor that has a vacuum as its dielectric. The electric constant affects the factors such as the base oil, additive, temperature, electric field frequency, water content, and contaminants. In this study, the tendency of the electric constant is investigated with a variation of temperature, water content, and dust weight. The experimental device can control working temperature and mix the contaminants with oil. A machine condition monitoring program developed to analyze hydraulic oil is described. This program provides graph and digital values with variation of time. Moreover, it includes an alarm system for when the oil condition is bad.
Abstract
An experimental device was developed for analysis of hydraulic oil characteristics with dielectric constant sensors. Online analysis is the most effective method of the three methods used for analyzing lubricant oils. This is because it can monitor the machine condition effectively using oil sensors in real time without requiring excellent analysis skill and eliminates human errors. Determining the oil quality usually requires complex laboratory equipment for measuring factors such as density, viscosity, base number, acid number, water content, additive, and wear debris. However, the electric constant is another indicator of oil quality that can be measured on-site. The electric constant is the ratio of the capacitance of a capacitor using that material as a dielectric, compared with a similar capacitor that has a vacuum as its dielectric. The electric constant affects the factors such as the base oil, additive, temperature, electric field frequency, water content, and contaminants. In this study, the tendency of the electric constant is investigated with a variation of temperature, water content, and dust weight. The experimental device can control working temperature and mix the contaminants with oil. A machine condition monitoring program developed to analyze hydraulic oil is described. This program provides graph and digital values with variation of time. Moreover, it includes an alarm system for when the oil condition is bad.
참고문헌 (13)
- 홍성호, "윤활유 분석 센서를 통한 기계상태진단의 문헌적 고찰 (윤활유 센서의 종류와 기능)", 한국트라이볼로지학회지, 36(6), pp.297~306 (2020), 한국트라이볼로지학회[DOI]
- 홍성호, "윤활유 분석 센서를 통한 기계상태진단의 문헌적 고찰(적용사례)", 한국트라이볼로지학회지, 36(6), pp.307~314 (2020), 한국트라이볼로지학회[DOI]
- Hong, S. H., "Literature review of machine condition monitoring with oil sensors-Application cases", Proc. Conf. Korean Tribol. Soc (2020)
- Chun, S. M., "Study on mutual relation between the level of deterioration influenced by the changes of chemical and physical properties and the change of dielectric constant for engine oil – diesel engine oil", J. Korean Soc. Tribol. Lubr. Eng, 22(5), pp.290~300 (2006)[DOI]
- Chun, S. M., "Study on mutual relation between the level of deterioration influenced by the changes of chemical and physical properties and the change of dielectric constant for engine oil – gasoline engine oil", J. Korean Soc. Tribol. Lubr. Eng, 22(5), pp.260~268 (2006)[DOI]
- 전상명, "디젤 미연소 검댕(Soot)이 디젤엔진오일의 유전상수변화에 미치는 영향 연구", 한국트라이볼로지학회지, 26(2), pp.111~121 (2010), 한국트라이볼로지학회
- 전상명, "딥스틱게이지형 소형 엔진열화감지센서 개발", 한국트라이볼로지학회지, 29(2), pp.77~84 (2013), 한국트라이볼로지학회[DOI]
- Kim, H. J., "A study on the oil condition monitoring methodology for the high speed train gear box", Proc. Conf. Korean Society for Precision Engineering (2012)
- Kim, H. J., "Condition analysis of the high speed train gear box oil", Proc. Conf. Korean Society for Precision Engineering (2013)
- Kim, H. J., "A study on the reduction gear oil aging monitoring technology for high speed trains", Proc. Conf. Korean Society for Railway (2013)
- "Hitachi unveils a first for the construction industry"[URL]
- Carey, A. A., "The dielectric constant of lubrication oils", DTIC Document, ~ (1998)
- Nelson, S. O., "Factors influencing the dielectric properties of agricultural and food products", Journal of Microwave Power and Electromagnetic Energy, 46(2), pp.93~107 (2012)