High Pressure Centrifugal Pump
Core Structure: Multi-Stage Impeller Supercharging Principle
Specially designed for high-pressure conveying scenarios, the high pressure centrifugal pump adopts a core structure of "multi-stage impeller series connection". Through the sequential superposition of energy conversion by multiple impellers, it achieves ultra-high head output, solving the technical bottleneck of insufficient head of single-stage pumps. When the high pressure centrifugal pump works, the fluid is pressurized by the first-stage impeller, then guided by the guide vane into the next-stage impeller for further supercharging. The pressure of each stage of impeller is superimposed to form high-pressure fluid, which is finally output through the diffuser flow channel.
Structural Design and Key Performance
Structurally, the high pressure centrifugal pump adopts a high-strength alloy material pump shaft and a wear-resistant impeller, equipped with a double-ended mechanical seal and a forced cooling system to ensure the sealing reliability and component life under high-pressure working conditions.
The key performance parameters are outstanding
|
Parameter Name (Symbol) |
Core Function |
Range |
|
Flow Rate (Q) |
Indicates the hourly sewage delivery capacity and determines sewage discharge efficiency |
1-1000m³/h (Small-sized: 1-50m³/h; Large-sized: 50-1000m³/h) |
|
Head (H) |
Determines the sewage lifting height and long-distance conveying capacity |
5-100m (Small-sized: 5-30m; Large-sized: 30-100m) |
|
Power (P) |
Motor driving power, directly affecting the upper limits of flow rate and head performance |
0.75-320kW |
|
Caliber (DN) |
Diameter of water inlet and outlet, which shall match the on-site sewage pipe size |
25-300mm |
|
Medium Temperature |
Adapts to sewage of different temperatures to avoid equipment damage |
Normal Temperature Type (≤40℃); High Temperature Type (≤100℃) |
|
Medium Concentration |
Refers to the solid particle content in sewage, affecting the pump's anti-clogging and wear resistance |
Solid Content ≤10%-30% |
|
Parameter Name (Symbol) |
Core Function |
Common Range/Description |
|
Flow Rate (Q) |
Volume of fluid delivered per unit time, reflecting the pump's delivery capacity |
Several L/min to thousands of m³/h; Common units: m³/h, L/min |
|
Head (H) |
Energy obtained per unit weight of fluid, reflecting the pump's ability to overcome resistance and lift fluid |
Single-stage ≤125m; Multi-stage up to thousands of meters (Unit: m water column) |
|
Rotational Speed (n) |
Impeller rotation speed, matched with the motor, directly affecting flow rate and head |
Common: 2900r/min, 1450r/min |
|
Efficiency (η) |
Ratio of effective power to shaft power, reflecting energy conversion efficiency |
Ordinary type: 90%-98%; Highest efficiency under design conditions |
|
Net Positive Suction Head (NPSH) |
Minimum suction pressure margin to prevent cavitation in the pump and protect the impeller |
Unit: m; Device margin must be greater than required margin |
|
Medium Adaptability |
Determines the material selection of pump body and components to ensure equipment durability |
Including temperature, viscosity, corrosiveness, solid content; Select materials as needed |
Exclusive Application in High-Pressure Scenarios
The high pressure centrifugal pump is mainly used in high-pressure working condition fields, such as power plant boiler feed pumps (needing high-pressure conveying of make-up water), mine underground drainage (overcoming high head resistance), water injection pumps in oil extraction, and high-pressure medium conveying in large chemical plants. It needs to be used with pressure stabilization devices during operation.
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