SIGMA PUMPY HRANICE PUMP TURBINES DET SIGMA PUMPY HRANICE, s.r.o. Tovární 605, 753 01 Hranice, Czech Republic tel.: +420 581 661 111, fax: +420 581 602 587 Email: sigmahra@sigmahra.cz 426 2.98 81.01
Applications The pump turbines of DET range have been designed to drive hydroelectric generators in small hydro-electric power stations. Their design is based on simple, reliable and proved design of spiral pumps type DE. The pump turbines of type DET-10 are used for low water heads ranging from 6 m to 17 m. The pump turbine of size DET-200-10 can be used for water heads from 4 m to 17 m. (The working areas of DET-10 turbines are marked with solid heavy lines in the performance chart of DET pump turbines). Nowadays the pump turbines of DET-10 type are produced as standard piece production. The pump turbines of DET-20 type have been designed for higher water heads up to 25 m. (The working areas of DET-20 turbines are marked with dash heavy lines in the performance chart of DET pump turbines).production of the pump turbines DET-20 has not been finished in the respect of technology of production yet which will result in a longer delivery times. Flow capacity of the pump turbines DET is given with hydraulic design of the pump turbine from the range 0.1 to 0.9 cbm/sec. Depending on efficiency of the size of pump turbine it is possible to get electric power from 4.5 to 155 kw. Detail and exact technical data about these pump turbines are given with the performance diagram of DET pump turbines. Design The pump turbines of DET range are of mixed-flow, singlestage, spiral casing, diagonal runner and axial-outlet design, non-regulating (i.e. control with blades adjustment is not possible). These pump turbines can be regulated with a flap within a limited working area. The design of mechanical part and shaft of these pump turbines has been strengthened because of higher needs of duty of pump turbines and to balance both radial and axial forces properly. The advantage of these pump turbines is their simple design with small number of parts which makes assembly and disassembly both mechanical part and hydraulic part very easy and with minimum requirements on special skills. The runner is of diagonal design with blades of helical shape. It is fixed to the shaft with runner nut. The shaft of the pump turbine is supported on two antifriction bearings. The bearings are lubricated in oil bath in bearing housing. The shaft is sealed with packing which has been design in the spiral casing directly. Arrangement of Branches The inlet branch is pointed upwards, the outlet branch is axial so that the water flows out the pump turbine in the direction of rotor axis. Direction of Rotation The pump turbines are counterclockwise turning units viewing from the hydroelectric generator. Material Execution Spiral casing, suction cover, bearings housing, packing cover, runner, bearing distance bush and runner nut are made of grey cast iron. Gland packing bush is of bronze. Shaft and runner key are of steel. Standard Accessory With pump turbine we supply one set of spare packing cord. Recommended set of spare parts for five year operation No Name Pcs. Note 1 Runner 1 2 Runner nut 1 3 Shaft 1 4 DET-200, 250 4 Packing cord 5 DET-300, 350 6 DET-400, 450 5 Bush 1
Informative Sectional Drawing of Low Head Pump Turbines DET-10 22 21 20 34 35 52 40 44 49 19 14 10 9 8 3 3 Spiral casing 22 Sealing ring 8 Cover 34 Bearing 9 Packing cord 35 Bearing housing 10 Bush 40 Bearing 14 Runner nut 44 Bearing cover 19 Bearing cover 49 Shaft 20 Suction cover 52 Oil level gauge 21 Runner
Informative Sectional Drawing of Higher Head Pump Turbines DET-20 30 33 44 52 20 15 14 13 9 8 7 5 6 3 62 3 Spiral casing 15 Runner nut 5 Suction cover 20 Cover 6 Bearing housing 30 Bearing 7 Sealing ring 33 Bearing 8 Bearing cover 44 Bearing cover 9 Runner 52 Shaft 13 Packing cord 62 Oil level gauge 14 Bush
Dimensional Drawing of Low Head Pump Turbines DET-10 A M B C ød V1 øo V ød V Z V Q ød V2 Z S ød S1 ød S P ød S2 øo S F SHAFT OF PUMP TURBINE E N CH G R U øo T L J H K Size of pump turbine Branches ød S ød S1 ød S2 Z S øo S ød V ød V1 ød V2 Z V øo V DET-200 DN200 340 295 26 8xø22 DN200 340 295 25 8xø22 DET-250 DN250 395 350 25 12xø22 DN250 395 350 24 12xø22 DET-300 DN300 445 400 24 12xø22 DN300 445 400 24 12xø22 DET-350 DN350 505 460 30 16xø22 DN350 505 460 30 16xø22 DET-400 DN400 565 515 25 16xø26 DN400 565 515 28 16xø26 Size of pump turbine Pump Turbine A B C E F G H CH J K L M N øo P Q R T U DET-200 695 170 525 280 250 300 350 200 470 600 340 225 60 4xø22 35 80 38.3 12 10 DET-250 730 205 525 315 300 340 400 220 570 720 420 260 65 4xø22 35 80 38.3 29 10 DET-300 827 220 607 400 350 380 450 230 670 850 490 300 80 4xø23 45 110 48.5 2 14 DET-350 827 235 592 450 400 450 500 300 750 950 550 350 90 4xø25 45 110 48.5 0 14 DET-400 993 250 743 500 425 480 550 350 835 1050 600 410 135 4xø25 60 125 64.2 44 18
Installation H geo Informative Performance Chart of Pump Turbines DET H [m] 25 DET-200 DET-300,350 DET-400 DET-450 150 kw 20 DET-250 125 kw 15 100 kw 75 kw 10 P = 50 kw 5 5 kw 10 kw 15 kw 25 kw 100 200 300 400 500 600 700 800 Q [l.s -1 ]