• 제목/요약/키워드: Oil Filter

검색결과 168건 처리시간 0.031초

산업용 자성폴리머 필터소재의 여과특성 연구 (Filtration Characteristics of Magnetic Fibrous Polymeric Filter Elements for Industrial Lub-systems)

  • 안병길;최웅수;이용훈;정용진;권오관
    • Tribology and Lubricants
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    • 제12권3호
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    • pp.39-47
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    • 1996
  • The magnetic fibrous polymeric oil filter elements for industrial lub-systems were obtained by pneumoextrusion processing prepared from thermoplastic pqlymer (polyamide) containing a magnetic particulate filler (Ba ferrite), and treated subsequently in a magnetic fields. Using the standard laboratory oil filtration test rig, metallic particle quantifier and image analyser system, the dependence of filtration charateristics of the magnetic filter media on the parameters of porosity and magnetic properties was investigated. The pressure drops and efficiencies of lubricating filter elements were measured on the packing density and magnetised filler content of filter element. Also, the industrial lub-systems such as lubricant filters for gear test rig and electric discharge processing machine were used for testing the flitrational characteristics of tl, c magnetised filter elements. The magnetic fibrous polymeric filter material was shown to possess a highly filtration efficiency in filtering the fine ferrous particles with increasing the magnetic force of filter element. Therefore, it is expected that the magnetic fibrous polymeric filter material should be used for effective oil filrers on the industrial lub-systems.

튜브형 박용 자동역세 연료유 필터 내부의 유동해석 (Flow Analysis of the Tube Type Marine Auto-Backwashing Fuel Oil Filter)

  • 양장식;김봉환;박영범
    • Journal of Advanced Marine Engineering and Technology
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    • 제33권4호
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    • pp.578-587
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    • 2009
  • In this paper, the characteristics of incompressible flow in a tube type marine fuel oil filter have been investigated. Fluent program has been used to obtain the solutions for the problems of three-dimensional, turbulent fuel oil flow in a filtering system. The inlet flow field is assumed to be uniform. The velocity and pressure distributions were obtained using Darcy's law. The increase of inlet velocity for cleaning fuel oil may cause some problems like vibration of the filter element. It was also required to consider the distribution of cleaning velocity because the worst distribution of cleaning velocity may cause the local insufficient cleaning effect and furthermore the effective filtration area can be reduced. The simulated results show that the computer code can be successfully applied for simulation of the complex base oil flow through the porous media. This paper could be applied to the design of auto-backwashing filtering system as design factor.

윤활유 필터의 종류 및 특징 (Types and Characteristics of Lubricant Filters)

  • 홍성호;신주용;박태성;이상후
    • Tribology and Lubricants
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    • 제39권4호
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    • pp.133-138
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    • 2023
  • This paper presents a discussion on lubricating oil filters. The maintenance of lubricating oil filters can improve the performance of mechanical systems and extend the service life of the lubricating oil. Therefore, the effective management of the lubricating oil can extend the service life of the machine and reduce maintenance costs. A representative method for managing lubricating oil is filtering the lubricating oil using a lubricant filter. However, effectively managing a lubricating oil using a lubricant filter requires an understanding of the related knowledge. In this paper, we present the definition, classification, characteristics, specifications, performance, and self-cleaning function of lubricating oil filters. The lubricant filters are classified based on the filter material, filtering method, filtering location, and amount of filtered fluid. Cellulose and glass fiber materials are conventionally used as materials for lubricant filters, and recently, metal materials, which show excellent durability, are being increasingly adopted. The filtering methods can be classified into physical, chemical, magnetic, and electric field methods, and the lubricant filters can be classified according to their location in the lubrication system. The beta ratio and efficiency of the lubricant filter can be determined based on the performance of the filter. Finally, there are many products or technologies that add a self-cleaning function to the filter to remove foreign substances or contaminants for efficient management.

원심력 필터 재생기능을 갖춘 오일 미스트 여과 집진장치 개발 (Development of an Oil Mist Collector Equipped with Centrifugal De-oiling System)

  • 김태형;서정윤;하현철;김종철;조진호
    • 한국산업보건학회지
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    • 제15권3호
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    • pp.166-175
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    • 2005
  • Health effects associated with metal working fluid (MWF) exposures include dermatitis, respiratory disease, hypersensitive pneumonitis, and asthma. Frequently, occupational exposures to MWFs are controlled by ventilating an enclosure with an air cleaning unit that includes a fan preceded by various kinds of filtration. There are several kinds of air cleaning units used in machining centers. But the associated troubles have hindered from efficiently using these devices. The main problem is the relatively short period of filter replacement. The reason is that the air cleaning units usually do not have the de-oiling systems, thus leading the earlier clogging of filters and reducing the flow rate of hood. Thus, the first stage of study was conducted to overcome this problem by developing the new oil mist collector equipped with the easy de-oiling system. The principle of de-oiling is that the centrifugal force generated by spinning the drum covered by filter fabric separates oils from the filter fabric. It would be very similar to the spin-dry laundry. By adopting this de-oiling technique, the problems associated with the conventional oil mist collectors could be solved. Several tests/analyses were performed to make the lab-scale oil mist collector. The collection efficiencies and the de-oiling efficiencies of commercially available filter fabrics were tested. Subsequently, the endurance test were conducted by observing SEM photos of filter fabrics and measuring tensile strength/expansion coefficient after spinning the filter drum for 20 minutes at the different rotation speeds. By doing these experiments, the most appropriate filter fabric and rotation speed/duration were selected. Finally, the new oil mist collector was designed. In the near future, this device must be tested in the real machining center.

분진 및 질소산화물 동시처리를 위한 1톤 중유 보일러용 세라믹 필터 집진기의 성능실험 (Performance Test of Ceramic Filter Collector for the heavy-oil boiler for Concurrent treatment Dust and Nitrogen Oxides)

  • 정완보;조정식
    • 한국산업융합학회 논문집
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    • 제21권6호
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    • pp.355-360
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    • 2018
  • The product developed in this study is a ceramic catalyst filter for 1 ton heavy-oil boiler that can simultaneously process dust and nitrogen oxides. This has been developed for simultaneous processing of nitrogen oxides and dust at high efficiency of hot exhaust gas (approximately $300^{\circ}C$) generated after burning 1 ton heavy oil boiler. Ceramic catalytic filters for 1 tonne heavy-duty glass display are technologies that remove 90% of dust and 85% or more of nitrogen oxides. This is an improved new technology to integrate exhaust ventilation and desiccation devices into one, thereby reducing the production process and improving the economy. To this end, the performance test of the catalytic filter for heavy oil boilers was carried out, and the durability of the PLC circuit was constructed.

코안다효과를 이용한 필터에 관한 연구 (A Study on Improving Filter Performance Using Coanda Effect)

  • 김용선;석재준;신희재;고상철
    • 한국기계가공학회지
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    • 제19권3호
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    • pp.99-104
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    • 2020
  • Modern people spend a lot of time indoors. Oil mist has a very fatal effect on the cook's health. Range Hood's filter plays a very important role in removing oil mist from kitchen. In this study, we applied coanda effect to increase the collection efficiency of filter. Original, Bottom, Slide Three shapes were simulated, and the two shapes were measured and compared using a wind tunnel tester. Pressure loss is measured below 2.0mmAq for all three filters, making them easy to use indoors. The simulation results were 15% for the original filter, 22% for the bottom filter, and 30% for the slide filter. The wind tunnel tester obtained 26% of the original filter and 30% of the slide filter. Research is needed to increase the collection efficiency by 50%.

유동대전된 절연유의 제전방식중 필터에 의한 영향 (The Effect of Filter in the Static Charge Elimination Methodes for Streaming-Electrification Insulating Oil.)

  • 정광현;김용운;신재화;김보열;이덕출
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1995년도 추계학술대회 논문집
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    • pp.361-364
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    • 1995
  • The static charges are generated by streaming electrification phenomena when insulating oil flowing by force for the purpose of cooling at the internal of Ultra-high power transformer. In this thesis, their elimination method was studied. The falter represents a greet much electrification characteristics because falter has large interfaces with liquid. In this paper, the streaming-electrification phenomena of insulating oil by metal filter were measured by mesh number, oil flow rate, oil temperature and a kind of mesh and The effect of charge elimination by metal filter generated minus ion was measured.

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엔진오일 유전상수 변화량 측정에 의한 엔진오일 품질 모니터링 시스템 개발 (Development of an Engine Oil Quality Monitoring System)

  • 전상명
    • Tribology and Lubricants
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    • 제27권3호
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    • pp.125-133
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    • 2011
  • The purpose of this study is to develop an engine oil quality monitoring system to warn the abnormal condition of engine oil. To do this, first of all, it is needed a personal controller development to measure the capacitance of a pre-developed engine oil deterioration detection sensor integrated with an oil filter. To measure the capacitance of engine oil in the sensor, it is used the way measuring the electric charging time in a capacitor by impressing DC volt. This method has merits on cost and signal stability. The measured capacitance is compensated by comparing with the one measured by an impedance analyzer. Also, using the dielectric constant gained by an impedance analyzer, the calculating equation of the dielectric constant of engine oil related with the currently developed sensor is decided. Then, the deterioration degree of engine oil is estimated according to the change rate of dielectric constant between green oil and used oil. Finally, using this dielectric constant information together with engine oil temperature and pressure, the currently developed engine oil quality monitoring system is to tell the abnormal state of engine oil.

오일 스크러버 및 집진장치를 통한 바이오매스 가스화 공정 발생 타르 및 입자 제거 연구 (Simultaneous Treatment of Tar and Particles Using Oil Scrubber and Bag Filter in Biomass Gasification)

  • 김준엽;조영민;김상범
    • 공업화학
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    • 제30권6호
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    • pp.712-718
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    • 2019
  • 가스화(gasification)는 바이오매스로부터 에너지를 얻을 수 있는 방법 중 하나로 열화학적 변환을 통해 수소, 일산화탄소, 메탄 등으로 조성된 가연성 가스인 'producer gas'를 생산할 수 있다. 하지만 producer gas와 함께 타르(tar)를 비롯한 ash 등의 입자상 물질이 함께 생성돼, 발전 터빈이나 연소 엔진 등에 유입되어 고장을 일으키거나 배관 등에 축적되어 막힘 현상 등을 야기하므로 제거가 필요하다. 본 연구에서는 producer gas 중 타르 및 입자 제거를 위해 오일 스크러버(oil scrubber)와 집진장치를 도입하였다. 흡수용매로써 타르를 효과적으로 제거가 가능한 대두유를 사용하였고, 스크러버의 용매 온도에 따라 제거효율이 어떻게 변화하는지 실험을 통해 관찰하였다. 집진장치에는 타르로 인한 필터 눈 막힘 현상 등의 문제를 방지하기 위해 pre-coating 기술을 도입하였다. Pre-coating에 사용할 물질로써 분말 소석회와 목탄계 활성탄(wood char)을 사용하였으며, 타르(tar)를 비롯한 입자 평균 제거 효율은 소석회를 pre-coating 물질로 사용 시 86%, 활성탄의 경우 80%로 나타났다. 스크러버와 집진장치를 동시에 사용한 경우에는 평균 제거효율이 소석회는 88%, 활성탄의 경우 83%로 나타났다.