蒸気弁の差圧比係数の検討及びバルブ選定用ソフトウェアの開発
Contents
1. 10 EY PPEATIN THIt 4 10 2 azbil Technical Review 201 1 1 3 12. Cv OACTUATR FI EE 1 I WI TE HL t i el HF pm 1 H H HH Ff 1 W a ja li BN img ene LT TT CEL LE EW TPT lmFodF LmmWq EE st 1 1 EE es m HH IE ET EE LE Hr EE TE rh Umm FE FT EE Wi Hh ts mm 9 4 2 1
3. For high precislon sizing of a control valve for compressible fund such as steam a valve specific differental pressure ratio factor IS necessary and sizing calculations become complex Test facihtes capable of flowing a large amount of arr with a high pressure difference are also needed to calculate differential pressure ratio factors We calculated differential pressure ratlo factors using computational fluid dynamics and verified the accuracy of such factors for small bore valves using test facilities for actual flow rate measurements which we have newly installed in our on site laboratory We also developed software that enables high precislon sizing Calculation using the differental pressure ratio factor This paper describes the study and development mentioned above 1 FCI Fluid Controls Institute Inc IEC EC 60534 2 1 ANSI ISA JIS B 2005 2 1 2005 9
4. VALVE 6 ET Gv 11 5 JIS B 2005 8 2 IEC 60534 8 2 x 5 Ap pp 5 Az Py kPa 1 kPa kPa WF EALCULATON Pr PpP AA J PP HH1FEI PL TI le hf latml fim lahaml 12 XEF 4 3 Cv Cv Cv
5. 2 293 15 K 1 7 300 kPal mM 25A Cv10 YC 3 _ MTZ 3 4 212p 4 x Y A f 3 4 C CY normal m3 h M 7 28 97 kg kmoll 7 KKI Z 1 zbil Technical Review 201 1 1 x YC 3 3 x YC CFD YC x YCo 0 YC YC 0 667YCo xr xr 0 37 z Fxg 4 4 Mach mrmher 0 2 0 4
6. Cv z Cv 14 1 2 x Cv Cv CALCULATOR 5 1 CFD ET EE CFD KO 2 AVALS ts 1 1 lm km
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10. 2 40A Cv25 x CFD 15A 80A 40A Cv40 CFD Le 2 VY51 x Cv CFD 15A 1 0 62 0 61 1 6 0 53 0 50 2 0 46 0 42 0 42 0 43 6 0 42 0 40 2oA 10 0 37 0 35 16 0 33 0 29 40A 29 0 38 0 38 40 0 29 50A 65 0 25 65A 99 0 31 60A 125 0 34 4 AVALSTV 4 1 AVALS
11. 1 2 Cv xr 3 3 1 CFD x CFD 2 1 2d d 67 1 2 1 normal 0C 1 O m3 h H 2 1 SCRYU Tetra V7
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13. IEC IEC CFD Computational Fluid Dynamics IEC
14. 0 6 0 8 1 0 1 2 4 x xyr 3 2 5 7 6 7 0 6 MPal Ap p 2 JIS B 2005 2 3 CFD 25A Cv10 3 YC x YC 8 2 5 _ 84 13 I0 Wh ST F es Choked Flow 1 i J J 4 IE 3 n 7 8 x YC 8 0 35 3 3 VY51
15. azbil Technical Heview 201 1 Study of Pressure Differential Ratio Factor of a Steam Control Valve and Development of Valve Selecuon Software 9 fr rt FA 2 tt Yoshio Nomaguchi Keita Satou I Tomonori shintani Mizuki Katou Cokey Oya AVALS
16. c Recommended Voluntary standard formulas for sizing control valves FCI 62 1 1962 2 Industrialprocess control valves Part 2 1 Flow capacity Sizing equations for fluid flow under installed conditions IEC 60534 2 1 1998 3 Flow Equations for Sizing Control Valves ANSI ISA S75 01 1985 4 2 1 JIS B 2005 2 1 2005 5 Savemation Review 1983 Vol 1 No 2 pp 48 56 6 2 3 JIS B 2005 2 3 2004 7 8 2 JIS B 2005 8 2 2008 8 Industrial process control valves Part e Noise considerations Section 2 Laboratory measurement of noise generated by hydrodynamlc flow through control valves IEC 60534 8 2 1991 gt SCR YU Tetra AVALS gt
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