원전 유압구동 균형 글로브 밸브의 정적진단시험 분석을 활용한 동적특성 모델링 및 성능평가 연구A NUMERICAL STUDY ON MODELLING AND FUNCTIONAL QUALIFICATION USING INTERPRETATION OF STATIC DIAGNOSIS TEST FOR A BALANCED GLOBE VALVE IN NUCLEAR POWER PLANTS
- Other Titles
- A NUMERICAL STUDY ON MODELLING AND FUNCTIONAL QUALIFICATION USING INTERPRETATION OF STATIC DIAGNOSIS TEST FOR A BALANCED GLOBE VALVE IN NUCLEAR POWER PLANTS
- Authors
- 김재형; 박태국; 이상혁; 류호근; 임태묵; 이정희
- Issue Date
- 2020
- Publisher
- 한국전산유체공학회
- Keywords
- 전산유체역학(CFD); 유동차단 및 기능입증(Flow Interruption and Functional Capability); 유량계수(Flow Coefficient); 균형글로브밸브(Balanced Globe Valve); 원자력발전소(Nuclear Power Plant)
- Citation
- 한국전산유체공학회지, v.25, no.3, pp 14 - 22
- Pages
- 9
- Journal Title
- 한국전산유체공학회지
- Volume
- 25
- Number
- 3
- Start Page
- 14
- End Page
- 22
- URI
- https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/305
- ISSN
- 1598-6071
- Abstract
- The 1D dynamic analysis model is made and validated by static diagnosis experiment result, which is the requirement of ASME QME-1 standard. The operation of valve assembly is qualified near the closing point and that qualification result also can be used on the evaluation of operation throughout whole lift with the test based 1D dynamic analysis model. The functional qualification in partially maintained differential pressure can be used to the qualification in wholly maintained differential pressure, in which the maximum differential pressure is maintained throughout whole lifting. The flow coefficient by CFD is used in the calculation of pressure on the valve assembly. And the upper pressure in pipe is used in the calculation of the various forces on the valve body. The packing force by the effect of the fluid pressure is calculated, where the strength of packing rings and two friction coefficients between stem and bonnet and between stem and packing are used. The static diagnosis in no flow condition can be extended to the dynamic diagnosis in flow condition using the test based 1D dynamic analysis model.
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