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극저온용 액중펌프의 임펠러 및 샤프트 진동해석에 관한 연구
권병수(Byung Soo Kweon),이치우(Chi-Woo Lee),신유인(Yoo In Shin),이중섭(Chung-Seob Yi) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.2
In this research, reverse engineering was applied to the product manufactured by “Vanzetti” from Italy to develop a localized cryogenic submerged pump used in small-scale LNG liquefaction plants. The results of modal analysis of the impeller and shaft confirmed that the resonance frequency of the impeller and shaft played an important role in the rotor. Modal analysis of the rotor confirmed that the forcing frequency had no influence on the resonance phenomenon.
권병수(Byung Soo Kweon),이중섭(Chung-Seob Yi),이치우(Chi-Woo Lee) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.3
This study represents basic research for the development of submerged pump technology applicable to transfer and storage of a cryogenic liquids. Its purpose is to secure baseline design data by applying reverse engineering to the process of developing a submerged cryogenic pump. The two-stage model included in the ARTICK Series LNG Submerged Pump produced by Vanzetti of Italy was selected for analysis for development of a localized product, and was disassembled for reverse engineering. The pump was disassembled after analyzing its processing/assembly characteristics such as shrinkage of fittings. In addition, the materials used in manufacturing of the main components were analyzed, and the ingredients were confirmed. As a result, a design drawing for each component required for product development was secured via foundational design, and a test product was manufactured by maximizing the application of appropriate domestic technologies.
권병수(Byung Soo Kweon),이치우(Chi-Woo Lee),이중섭(Chung-Seob Yi) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.6
The purpose of this study is to examine the basic design of a submerged cryogenic pump, which is a two stage impeller pump. We limited this study to the impeller design of the submerged pump. We calculated its velocity triangle based on the impeller blade configuration and, in order to check its natural frequency, we carried out a modal test using a finite element method (FEM) analysis. Basically, modal test results had quite similar to FEM analysis.
이중섭(Chung Seob Yi),이치우(Chi Woo Lee),권병수(Byung Soo Kweon),장형채(Hyeong Chae Jang),박종환(Jong Hwan Park),이기봉(Gi Bong Lee) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6
This research is a basic research for developing a submerged pump technology applicable to transfer and storage of a cryogenic liquid system, and the purpose is to secure baseline design data through applying reverse engineering to the process for developing a cryogenic submerged pump. The 2-Stage Model included in the LNG Submerged Pump ARTICK Series produced by Vanzetti from Italy was selected as the subject for developing a localized product, and the subject was disassembled for reverse engineering. The subject was disassembled after analyzing its processing/assembly status such as shrinkage fitting. In addition, a material analysis was conducted to analyse the materials used for manufacturing the main components, and the ingredients were confirmed. As a result, a design drawing for each component required for developing the product was secured through the foundation design, and a test product was manufactured through maximizing application of the applicable domestic technologies. As a result of conducting a modal analysis of the impeller and shaft, the resonance frequency of the impeller and shaft playing an important role in the rotor was confirmed. As a result of conducting a modal analysis of the rotor, it was confirmed that the forcing frequency has no influence on the resonance phenomenon.
이중섭(Chung Seob Yi),이치우(Chi Woo Lee),권병수(Byung Soo Kweon),장형채(Hyeong Chae Jang),박종환(Jong Hwan Park),이기봉(Gi Bong Lee) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6
This research is a basic research for developing a submerged pump technology applicable to transfer and storage of a cryogenic liquid system, and the purpose is to secure baseline design data through applying reverse engineering to the process for developing a cryogenic submerged pump. The subject was disassembled after analyzing its processing/assembly status such as shrinkage fitting. In addition, a material analysis was conducted to analyse the materials used for manufacturing the main components, and the ingredients were confirmed. Regarding materials, STS-304 and STS-431 which are stainless materials widely used in the cryogenic area are applied. Aluminum alloy is applied to impeller and upper manifolder. The performance of the cryogenic submerged pump is described in Table. 1, and the pump rotates at the high speed of 6,000rpm. As a result of the performance test, the average flow rate on the suction side of the submerged pump was about 197.2 LPM and about 204.4 LPM on the discharge side. In the case of pressure, on the suction side, an average of 1.7 bar was generated and about 9.2 bar was generated from the discharge side. Finally in the case of the temperature distribution, it was confirmed that about -175 ° C was maintained from the suction side and about -184 ° C was maintained from the discharge side.