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중대형 보일러용 FD FAN의 베인 댐퍼 구조 개선에 관한 연구
강봉성(Bong Sung Kang),박율민(Yool Min Park),김성문(Sung Moon Kim),정순재(Soon Jae Jung),유민경(Min Gyung Yoo),장성철(Sung Cheol Jang) 대한설비공학회 2008 대한설비공학회 학술발표대회논문집 Vol.2008 No.2
This study have processed the developing of vane damper with accurate control by using gear which is a flow-control equipment of marine boiler's FD fan on this research. For the developing of vane damper, we have corrected some problem from welding & assembly process by changing the design, and for the case of an emergency case, we have applied the easy disassembly & assembly on that vane damper. Compared to Rink type vane damper in current, we have focused on high efficiency with low price of that new developing damper. For selection of actuator, we have tried to find the propriety with our developing focus. Also, we have developed a jig of assembly processing for high productivity with quality, it caused the best assembly performance with heat-treated & processed parts.
최낙삼(NakSam Choi),곽승범(SeungBum Kwak),신세문(SeiMoon Shin),강봉성(BongSung Kang),신외기(WaeGi Shin) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Coolant rubber hoses for automobile radiators co be degraded and thus failed due to the influence of contacting stresses of air and coolant liquid under the thermal and mechanical loadings. In this study, test analysis was carried out for evaluating the degradation and failure mechanisms of coolant hose materials. An increase of surface hardness and a large reduction of failure strain were shown due to the formation of oxidation layer for the specimens which had been kept in a high temperature air chamber. Coolant ageing effects hardly took place, which corresponded to only the pure thermal degradation. The degraded specimens by electro-chemical degradation (ECD) test showed a swelling behavior and a considerable increase in weight oil account of the penetration of coolant liquid into the skin and interior of rubber. The ECD induced material softening and fatal decreases in strength and failure strain. A procedure fur reliability analysis and evaluation of the degradation and failure mechanisms of FPDM rubbers used in coolant hoses for automobile radiators was proposed.