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비 막힘형 수중 펌프 임펠러 형상이 펌프 성능에 미치는 영향

Effects of Impeller Shape of Submersible Nonclogging Pump on its Performance

  • 윤정의 (강원대학교 메카트로닉스공학과)
  • 투고 : 2012.07.16
  • 심사 : 2012.09.10
  • 발행 : 2012.12.01

초록

본 연구에서는 15kW 모터로 구동되는 $5m^3$/min의 유량을 고효율로 공급할 수 있는 2엽 비막힘형 수중 펌프의 임펠러를 설계하는 것을 목표로 임펠러 출구 위치 변화($h_I$), 출구 폭($b_2$) 및 허브 프로파일이 펌프 성능에 미치는 영향을 상용 해석용 프로그램 ANSYS CFX를 사용한 전산해석을 통해 수행하였다. 해석 결과, 임펠러 출구 위치 변화($h_I$) 및 출구 폭($b_2$)이 증가하면 양정 및 축동력의 경우는 $h_I$, $b_2$와 함께 지속적으로 증가하지만 효율의 경우는 $h_I$=38 mm, $b_2$=55 mm 까지만 증가하며, 그 이상의 값에서는 일정한 값을 가짐을 보여준다. 그리고 허브 프로파일의 변화는 상대적으로 임펠러 성능에 큰 영향을 미치지는 않는다.

This study was performed to develop a high-efficiency submersible nonclogging pump impeller. Toward this end, we simulated the effect of some parameters such as the outlet position of a blade ($h_I$), outlet width of a blade ($b_2$), and hub profile on the pump efficiency by using the commercial codes ANSYS CFX and BladeGen. The results showed that the pump efficiency was proportional up to $h_I$= 38 mm and $b_2$= 55 mm. It remained constant over these values. However, the head and shaft power were proportional to $h_I$ and $b_2$ in the simulated ranges. The effects of hub profile changes on the pump efficiency were relatively small compared to those of the other parameters.

키워드

참고문헌

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피인용 문헌

  1. Effect of Surface Roughness on Performance Analysis of Centrifugal Pump for Wastewater Transport vol.38, pp.2, 2014, https://doi.org/10.3795/KSME-B.2014.38.2.147
  2. Experimental Investigation of the Development of a Rotor Type Slurry Pump vol.39, pp.4, 2015, https://doi.org/10.5916/jkosme.2015.39.4.456