1、 55562 2013 ( 60609-1:2004) , 1. , IEC 60609-1:2004 Hydraulic turbines, storage pumps and pump-turbines Cavitation pitting evaluation Part 1: Evaluation in reaction turbines, storage pumps and pump-turbines (MOD) 2014 55562201 3 II 27 2002 . 184- , 1.0 2004 . 1 - ( ), ( ) , 4 2 330 , 3 28.08.2013 65
2、0- 4 60609-1:2004 , . . 1. , (IEC 60609-1:2004 Hydraulic turbines, storage pumps and pump-turbines Cavitation pitting evaluation Part 1: Evaluation in reaction turbines, storage pumps and pump-turbines). 3 6 , . , 5 1.02012 ( 8). ( 1 ) , . () . , (gost.ru) , 2014 , 55562201 3 III 1 . 1 2 . 1 3 . 1 4
3、 . 5 5 7 6 9 () , 10 () .12 () 13 () , 16 55562201 3 ( 60609-1:2004) 1 , . 1. , Hydraulic turbines, storage pumps and pump-turbines C avitation pitting evaluation Part 1: Evaluation in reaction turbines, storage pumps and pump-turbines 201507 01 1 , , , , , . , , , , . 27807. 2 : 27.0022009 . 278078
4、8 . , 1 , , , . , , (). , , , , , . , , , , . 3 27.002, : 55562201 3 2 3.1 tR(reference duration of operation): ( ), , . 3.2 PTU (upper limit power for temporary operation): , NPSE (. 1). 3.3 PTL (lower limit power for temporary operation): , NPSE (. 1). 3.4 PCU(upper limit power for continuous oper
5、ation): , NPSE (. 1). 3.5 PCL (lower limit power for continuous operation): , NPSE (. 1). 3.6 ETU (upper limit of specific hydraulic energy for temporary abnormal operation): , NPSE (. 1 2). ETU , ECU. 3.7 ETL (lower limit of specific hydraulic energy for temporary abnormal operation): , NPSE (. 1 2
6、). ETL , ECL. 3.8 ECU (upper limit of specific hydraulic energy for continuous operation): , NPSE (. 1). 3.9 ECL(lower limit of specific hydraulic energy for continuous operation): , NPSE (. 1). 3.10 (high-load temporary operating range in turbine mode): , PCU PTU(. 1). 3.11 (low-load temporary oper
7、ating range in turbine mode): , PCL PTL(. 1). 3.12 (low specific hydraulic energy temporary operating range): , ECL ETL(. 1 2). 3.13 (high specific hydraulic energy temporary operating range): , ECU ETU(. 1 2). 3.14 (cavitation pitting guarantee of operation): ( ) . 3.15 R, , 3(guaranteed limit of t
8、he amount of cavitation pitting): . 3.16 (cavitation pitting guarantee period): , . 3.17 D, (diameter of the impeller): , - , . 55562201 3 3 3.18 (normal continuous operating range): , PCL, PCU, ECL ECU(. 1), ECL ECU(. 2). 3.19 (cavitation): () / , , . , . 3.20 , (cavitation factor, Thoma number): ,
9、 . 3.21 (cavitation pitting): . 3.22 k1,k2,k3,., ki(coefficients k1,k2,k3, ., ki): , (. 5.2.3). 3.23 S, (maximum depth of cavitation pitting): , (. 5.2.1). 3.24 S1, S2,S3,. ,Si, (maximum depth of particular pitted area S1, S2,S3, ., Si): , (. 5.2.2 5.2.3). 3.25 V, 3(volume of material): , . 3.26 W,
10、(mass of material removed): , . W . , , ; 7,8 /3. 3.27 H, (head of machine): , H=E/g. 3.28 A1,A2,A3, , Ai, 2(individual areas damages by cavitation pitting A1, A2, A3, , Ai): (. 5.2.2 5.2.3). 3.29 E, / (specific hydraulic energy): , E=gH (. 3.14). 3.30 g, /2(acceleration due): . 3.31 A, , 3 (guaranteed limit of the amount of cavitation pitting at the time of cavitation-pitting examination): . 3.32 t, (actual duration of operation): , . 3.33 NPSE, / (net positive suction specific energy, NPSE): . 3.34 NPSEL: NPSE (. 3.15). 55562201 3 4 4.3. . NPSEL PCU, PCL, 1 ( 50 ) ( 10 ) ( 50 )
