Type OWH
Qmax=500m3/h – Hmax=1000m
APPLICATION
The OWH type pumps are designed for deepest mine dewatering. The heads are up to 1000 meters.The robust design of OWH pumps is adequate for adverse operating conditions typical for mine dewatering.The pumps are designed to stand increased external loads and the presence of mechanical and chemical contaminations in the mine water.
For the sake of those design features the OWH pumps, beside the basic application in deep mine dewatering are also applicable in other industries, where there is a need for pumping contaminated fluids, such as:
steel industry
cement and lime plants
open cast mines.
DESIGN
OWH are horizontal, stationary, multistage, ring-section pumps.The delivery flange is directed vertically upward and the suction flange is directed horizontally, left or right according to the needs. Closed impellers and vane diffusers are applied. The axial thrust is absorber by a balance disk. Two alternative kinds of bearing can be applied: oil lubricated slide bearings or grease lubricated roller bearings. The shat seal can be sealed by a gland or mechanical seal.
The suction casing is designed to stand suction head up to 200 m. For that reason the OWH pump are able to operate in series with a booster pump to achieve a total head of 1200 m.
The drive for the highest heads is double-sided (two motors per pumps).
MATERIALS OF CONSTRUCTION
The materials of construction for the OWH pumps are selected accordingly to the handled fluid. There are two standard material versions:
wear-resistant – for water containing solids
salt-resistant – for chemically contaminated water with solids presence.
Special material versions can be selected for handling non-typical fluids.
No. |
Part name |
No. |
Part name |
No. |
Part name |
1 | Shaft | 15 | Discharge casing | 29 | Shaft protecting sleeve |
2 | Bearing cap | 16 | Discharge casing plate | 30 | Seal ring |
3 | Oil chamber cover | 17 | Distant | 31 | Sealing sleeve |
4 | Stuffing box guard | 18 | Sliding ring | 32 | Distance sleeve |
5 | Shaft nut | 19 | Balance disc | 33 | Shaft sleeve |
6 | Packing | 20 | Balance device casing | 34 | Discharge casing sleeve |
7 | Suction casing | 21 | Shaft nut | 35 | Thrust ring |
8 | Suction casing plate | 22 | Bearing cap | 36 | Limiter |
9 | 1st stage impeller | 23 | Bearing cap | 37 | Stuffing box casing |
10 | Impeller | 24 | Shaft shift indicator | 38 | Shaft protecting sleeve |
11 | Stage casing | 25 | Split acetabulum | 39 | Split Gland |
12 | Centrifugal guide | 26 | Bearing casing | 40 | Deflector |
13 | Supply guide | 27 | Lantern ring | 41 | Lubricating ring |
14 | Tie bolt | 28 | Suction casing sleeve | 42 | Sliding cover |
Dimension [mm] |
Pump type |
OWH-200 |
OWH-250 |
OWH-250S |
|
L | Number of stages |
3 | 2058 | 2538 | – |
4 | 2213 | 2703 | – | ||
5 | 2368 | 2868 | – | ||
6 | 2523 | 3033 | 3154 | ||
7 | 2678 | 3362* | 3483* | ||
8 | 2833 | 3527* | 3648* | ||
9 | 2988 | 3692* | 3813* | ||
10 | 3143 | 3857* | 3978* | ||
11 | 3298 | – | – | ||
a | Number of stages |
3 | 595 | 685 | – |
4 | 750 | 850 | – | ||
5 | 905 | 1015 | – | ||
6 | 1060 | 1180 | 1220 | ||
7 | 1215 | 1345 | 1385 | ||
8 | 1370 | 1510 | 1550 | ||
9 | 1525 | 1675 | 1715 | ||
10 | 1680 | 1840 | 1880 | ||
11 | 1835 | – | – |
Dimensions marked (*) pertain to design with dual drive.
Pump type |
OWH-200 |
OWH-250 |
OWH-250S |
|
Dimensions [mm] |
W | 1180 | 1195 | 1220 |
k | 650 | 597 | 680 | |
H | 1170 | 1330 | 1330 | |
h | 530 | 600 | 600 | |
Ds | 250 / 200* | 250 | 300 | |
Dt | 200 | 250 | 250 |
(*) applies to pump version with either suction work or work in series with influx.
Pump type |
Number of stages |
Capacity |
Head |
Rotation speed |
Shaft power |
Weight |
OWH-200 | 3 | 315 | 240 | 1450 | 295 | 3633 |
4 | 320 | 393 | 3928 | |||
5 | 400 | 491 | 4223 | |||
6 | 480 | 589 | 4518 | |||
7 | 560 | 687 | 4813 | |||
8 | 640 | 785 | 5108 | |||
9 | 720 | 883 | 5403 | |||
10 | 800 | 981 | 5698 | |||
11 | 880 | 1080 | 5993 | |||
OWH-250 | 3 | 500 | 300 | 1450 | 544 | 5258 |
4 | 400 | 726 | 5864 | |||
5 | 500 | 908 | 6470 | |||
6 | 600 | 1090 | 7076 | |||
7 | 700 | 1272 | 7682 | |||
8 | 800 | 1453 | 8288 | |||
9 | 900 | 1635* | 8918 | |||
10 | 1000 | 1817* | 9524 | |||
OWH-250S | 6 | 500 | 600 | 1450 | 1090 | 5612 |
7 | 700 | 1272* | 6091 | |||
8 | 800 | 1453* | 6550 | |||
9 | 900 | 1635* | 7009 | |||
10 | 1000 | 1817* | 7468 |