General
Hydraulic design,construction design and manufacturing process of the series of product adopted more than 2 national patents, which have advantages of good suction performance,wide performance range,stable operation,low noise,long operation life and maintenance convenience.
Application
The series products are mainly applicable to thermo power plant for delivering drainage water of low pressure heater or other liquids with physical and chemical property similar to clean water,and delivering boiler feed water or hot water,or liquids similar to hot water without containing solid.
Performance Parameters Table
| Model |
Capacity(m³/h) |
Head(m) |
Pump efficiency (%) |
Shaft power (kW) |
Speed(rpm) |
| NW250-8 |
200 |
352 |
74 |
259.2 |
1480 |
| 250 |
320 |
78 |
279.5 |
| 300 |
272 |
76 |
292.6 |
Product Attribute
| Attribute |
Attribute |
Attribute value |
| Performance |
Flow range(m³/h) |
200-300 |
| Material |
Impeller |
ZG07Cr19Ni10 |
| Pump shaft |
45#+40Cr |
| Inlet section |
HT250 |
| Outlet section |
HT250 |
| Middle section |
HT250 |
| Balance disc |
QT500-7 |
| Working conditions |
Medium temperatur(ºC) |
≤200ºC |
| Maximum inlet pressure(ºC) |
≤1.6MPa |
| Installation |
Inlet diameter(mm) |
200 |
| Outlet diameter (mm) |
200 |
| Connection method |
Flange connection |
| Motor |
Insulation class |
F |
| Motor power (kW) |
355 |
| Motor model |
YXKK400-4 |
| Power frequency(Hz) |
50 |
| Rated voltage(V) |
6KV |
| Energy efficiency rating |
3 |
| Package |
Pump weight(kg) |
1790 |
| Motor weight(kg) |
2860//3100 |
Structure feature
1.Balance disc
Axial force is dynamic balanced that has excellent and reliable balance result
Spiral seal construction is designed that leakage is small and volumetric efficiency is high
2.Inducer,first stage impeller,impeller,diffuser
High cavitation resist design that satisfies with low cavitation requirements
Excellent hydro model is adopted that have high efficiency and wide high efficient range
Metal mould,accurate roughcast and digital machining are adopted
3.Seal
Good quality mechanical seal without any leakage while starting,running and stopping
Self circulating cooling design,have long operation life,convenience in assembly and disassembly,and simple maintenance
4.Bearing
Rolling bearing support with thin oil lubricated and water seal construction
Axial limits design for rotor in non driven end that improves operation life of mechanical seal
Temperature and vibration monitoring nozzle is preserved for bearing box,which can be provided according to requirements
5.Supporting method
Center support is suitable for delivering media with high temperature
Even thermal expansion,rotor without bend,and operation is stable
6.Rotor part
Design thickened that have good rigidness and high critical speed
Strictly balance tested that operation is more stable
FAQ
| 1. Q:Are you a manufacturer or trading company |
| A:We are a manufacturer that specializes in industrial pump for 60 years |
| 2. Q:What payment term do you prefer? |
| A:Normally we take payment term 30% T/T in advance,70% paid before shipment, we can also accept L/C at sight. |
| 3. Q:What about the package? |
| A:Standard export plywood case |
| 4. Q:How long is the warranty? |
| A: Eighteen (18) months after delivery, twelve (12) Months from the date of commissioning, whichever comes earlier |
| 5. Q:Is it acceptable to make customer's own brand? |
| A: Sure, we can do OEM & ODM |
| 6. Q:How many days does it take for manufacturing? |
| A: It depends on order quantity and pump types. Normally it takes 20-120 days |
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