Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Study for the Reliability Evaluation of a Volute Pump

벌류트 펌프의 신뢰성 평가에 관한 연구

  • Jung, Dong Soo (Department of Reliability Assessment, Korea Institute of Machinery & Materials) ;
  • Lee, Yong Bum (Department of Reliability Assessment, Korea Institute of Machinery & Materials) ;
  • Kang, Bo Sik (Department of Reliability Assessment, Korea Institute of Machinery & Materials)
  • Received : 2018.09.03
  • Accepted : 2018.10.15
  • Published : 2018.12.01
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Abstract

The objective of this paper is to evaluate the reliability of a volute pump and presents test results through performance and life tests. The performance and life test methods were presented by analyzing the failure modes of the volute pump. Zero failure test time was calculated to evaluate the reliability of the volute pump and then, the test was performed under accelerated conditions. The test was also carried out to check the failure modes of the field conditions. This study can be provided to improve the product reliability through failure analysis of the volute pump. And failure cause of typical failure case has been investigated and improvement design has been presented. The performance test results of before and after the accelerated life test were presented to confirm the improved reliability of the volute pump.

Keywords

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Fig. 1 The structure of a volute pump

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Fig. 2 Main failure samples of a volute pump

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Fig. 3 Test equipment for performance and life

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Fig. 4 Test result for rated flow & head

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Fig. 5 Test result for maximum flow

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Fig. 6 Test result for maximum head

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Fig. 7 Test result for efficiency

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Fig. 8 Impeller design change of impeller

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Fig. 9 Pump efficiency according to angle of impeller

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Fig. 10 Life test equipment of mechanical seal

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Fig. 11 Pump efficiency and head according to roughness

Table 1 Failure modes and mechanisms analysis

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Table 2 Two stage quality function deployment

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Table 3 Test method and acceptance criteria for performance and life

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Table 4 Specimen specifications

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Table 5 Test equipment specifications

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Table 6 Test result for performance and life

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References

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