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RISS 인기검색어
- 검색키워드
- 저자 : Kousuke Mitsuhashi (검색결과 1 건)
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Study on Gap Height Measurement of Radial Slit Using Pneumatic System
Kousuke Mitsuhashi,Chongho Youn,Toshiharu Kagawa 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.10
Flame arresters are required to assure safe handling of flammable gases in industrial plants. In this paper, we propose a new type of frame arrester in which a radial slit–type device of overlapping parallel discs is used to quench flames. If the gap height of the radial slit is even slightly too large, a flame cannot be quenched. Moreover, there is the possibility that the gap height is not homogeneous. With current measurement methods, only the gap height at the outlet can be measured, and the inside state of the gap cannot be determined. Therefore, in this study, we propose a measurement method using a jet, and a Pitot tube to determine the gap height, including the state inside the gap. Based on a theoretical analysis of the radial flow field in the slit, we fin d that the dynamic pressure in the leaving the gap is proportional to the fourth power of the gap height. Therefore, to accurately determine gap height, we propose a method for measuring the dynamic pressure in the let discharged from the slit. The effectiveness of the method was confirmed by measuring radial slits of known heights, and the method can be used to measure radial slits to an accuracy of several micrometers.
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