CHANGSHA SANCHANG PUMP CO., LTD.
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Horizontal Multistage Ring Section Centrifugal Hot Water Circulation Pump DG155-67X6
The design and arrangement of Horizontal Multistage Ring Section Centrifugal Hot Water Circulation Pump has a significant impact on overall unit availability. In determining the optimum arrangement of feed-pumping plant, the economic assessment needs to take account of capital costs, capitalised running costs, repair and maintenance costs, and the likely effects of loss of availability. Other constraints which should be considered are:
• The need to provide adequate NPSH margins, taking into account that the pumps are supplied from a direct contact heater (de-aerator), which can be subject to pressure decay following a reduction in turbine load.
• The provision of sufficient pumping capacity to meet flow requirements under all operational circumstances. It is normal practice to include a flow margin to accommodate additional demand by the turbine above its design rating during transient flow disturbances. A margin on pump generated head is also appropriate to cover for deterioration resulting from internal wear during periods between overhaul.
* Hot water circulation
* Boiler water feeding on boat
* Power plant cooling
* Heating factory boosting
* Cooling tower water supply
* Air-coniditioning
Parameters
| Flow Capacity | 100-185 m3/h | Delivery Head | 118-684 m |
| Inlet/Outlet Dia. | 150mm/150 mm | Working Pressure | ≤ 10.26MPa |
| Liquid Temperature | 0 - 120 ℃ | Driven By | Electric Motor / Diesel Engine |
| Seal Type | Mechanical seal / Gland packing | Liquid | Hot water or similar |
| Material of Construction | Cast Iron / Cast Steel / S.S304 / S.S316 | ||
| Parts Name | Clean Water | Sewage | Hot Water | Corrosive Liquid | Oil Liquid |
| Pump Body | Cast Iron | Ductile Iron | Cast Steel/S.S304 | S.S304/S.S316/S.S2205 | S.S304/S.S316 |
| Shaft | Cast Iron | S.S420 | S.S420/40Cr/42CrMo | S.S630 | S.S420/40Cr |
| Shaft Sleeve | Carbon Steel | S.S420 | S.S304 | S.S316/S.S630/S.S2205 | S.S304/S.S316 |
| Impeller | Cast Iron | Ductile Iron | Cast Steel/S.S304 | S.S304/S.S316/S.S2205 | S.S304/S.S316 |
| Wearing Ring | Cast Iron | Ductile Iron | Cast Steel/S.S304 | S.S304/S.S316/S.S2205 | S.S304/S.S316 |
| Bearing | China Make/NSK/SKF/Customized | ||||
| Seals | Mechanical Seals/Gland Packing Seals | ||||