CJA475-W-90/2×9 Pelton Turbine (2 nozzles)
1. Equipment Guaranteed Characteristics and Performance
1.1 TurbineCharacteristics and Performance Guarantee
1) Output
Under the following water head, at rated operation speed and within the guaranteed cavitation erosion range, the Output of each of the Model is as the follows:
|
Net water head (m)
|
Output (kw)
|
Max. Output (kw)
|
|
Max Water Head 220
|
1299.2
|
1454.3
|
|
Designed Water head 212
|
1251.9
|
1409.5
|
2) Efficiency
(1). At rated head 212m, rated output 1251.9 KW, the guaranteed prototype turbine efficiency is no less than 86%, under the same operation condition the model turbine efficiency guaranteed value is no less than 86%.
(2). under all operation range, the prototype turbine max. efficiency guaranteed value is no less than 88%, model turbine max. efficiency guaranteed value is no less than 89%.
(3) Model Turbine-generator Unit Efficiency at Rated Speed while operating with the Water Head and Output as shown in Table 1.1
Table 2.1.1.1 Efficiency Guaranteed Value at different Water Head and Discharge
|
Efficiency
(m)
|
Percentage of Rated Discharge
|
|
10%
|
20%
|
40%
|
60%
|
80%
|
90%
|
100%
|
|
212
|
70%
|
75%
|
82%
|
86%
|
86.5%
|
86.5%
|
86%
|
3) Noise
Under all the operation range, at the distance of 1 m from the turbine, the noise does not exceed 85 dB(A).
4). Reliability Criteria
(1) Overhaul Interval is 3 years.
(2) Total Service Life is 40 years.
(3) Availability ratio 99%
(4) Continuous trouble-free operation time 25000h
2. Turbine Technical Data Details
1) Turbine Model CJA475-W-90/2×9
2) Runner Nominal Diameter D1= 900mm
3) Rotation Direction if viewing from the turbine end view. Clockwise
4) Number of Nozzle Z=2
5) Diameter of Nozzle Jet d0=90mm;
6) Rated Speed 600 rpm
7) Closing time of the nozzle = 20S to 30S
8) Response time of deflector = 3S to 5S
9) Rated Output at rated head of 212 m, 1251.9 KW
10) The discharge at 212m rated Head for rated Output 0.7 m3/s;
11) Max. Runaway Speed (at Max Head 220 m) 1277 r/min
12) Weight of rotary part of the turbine 0.9t
13) GD2 of rotary part of the turbine 0.4tm²;
14) Total Weight of the Turbine 7 T;
15) Max. Lifting part in the powerhouse for the main crane 3.5 T;
16) Runner
(1) Material 0Cr13Ni5Mo;
(2) Number of Bucket 20;
(3) Max. External Diameter X Height 1250*300mm
(4) Process Workmanship Inblock Cast+Machineing+Polishing
17) Main Shaft
(1) Material 20SiMn share shaft with generator
18) Bracket
(1) Type Welded parts
(2) Material Q235
(3) Dimension 4770*2730*1800;
(4) Number of Split 3;
19) Nozzle
(1) Type Hydraulic Pressure Operation
(2) Material 02Cr13;
(3) Number 2
20) Max. Transportation Dimension (Packing)
(1) Appellation Bracket
(2) Dimension 4770*2730*1800;
(3) Weight 3.5 T
21) Max. Transportation Dimension (Packing)
(1) Appellation Bracket
(2) Weight 4.5 T
(3) Dimension 4970*3130*2000;
