345 m³/min High Power Centrifugal Vacuum Pump - the Great
Substitute for Water Ring Vacuum Pump
GoodSeaA high-speed variable frequency centrifugal vacuum pump
adopts aerodynamic technology and aviation-grade processing and
manufacturing process, it is designed for the papermaking and
chemical industries. The impeller adopts aviation-grade
high-strength alloy material, which can be used 300,000 hours
(about 35 years) without maintenance. It’s drive system uses
high-efficiency and energy-saving motors, the quality is stable and
reliable, It is suitable for long-term stable operation in harsh
environments such as high temperature and high humidity.
According to the characteristics of papermaking industry, the
impeller of the centrifugal vacuum pump is specially made of
aviation-grade high temperature-resistant and high strength alloy
material, abrasion resistance, corrosion resistance, white water
droplets resistance and pulp fiber impact resistance, able to provide 30 years of service, impeller maintenance free.
In the process of design and R&D, special attention is paid to
the high performance, high reliability and high cost performance of
Compared with the advanced turbine vacuum pump abroad, the
transformation cost can be saved by more than 50% for machines of
the same power.
The advantages of centrifugal vacuum pump compared with water ring
Water ring pump
Centrifugal vacuum pump
Its low efficiency and high power
consumption makes its comprehensive
use cost high in spite of its low
Its high efficiency makes its
comprehensive use cost low
even the manufacturing cost
Technology Advancing Level
Average Service Life
Poor operational reliability
Great operational reliability,
For Single stage: -65kPa
For Double stage:-85kPa
Low flow rate, high vacuum
High flow rate,stable vacuum
degree(-30 ~ -75kPa)
Conversion of power and flow
Aeroengnine Compressor-Design and manufacture method
One-dimensional geometry and thermal design
AxStream design space - optimal performance point search
Two-dimensional flow design
Mainly refers to the meridional channel and streamlines design, and
the common meridional channel line is Bezier curve.
The design process focuses on the curvature change of the
streamline, the changes of blade mounting angle, or the area
shrinkage rate of the path.
The inlet and outlet mounting angle is given by the preliminary
design, while the position and size of the maximum blade mounting
angle are adjusted by the designer's experience and simulation
Three-dimensional blade design
The aero engine blades exhibit complex three-dimensional, complex
curved geometric features.
Using previous experience to design, or classic blade design can no
longer meet the needs.
The blade design, modeling and optimization process are mainly
accomplished by aero turbomachinery design software.
- The uses of splitter blades (also known as small blades) can not
only reduce the blockage of the impeller inlet, but also ensure
that the impeller has enough work function.
Three-dimensional flow field simulation
The aerodynamic calculation and full three-dimensional flow field
simulation are carried out by using the aviation aerodynamic
impeller ternary simulation software NUMECA to simulate the actual
operation and provide an important basis for design performance
Commissioning & Testing
1. High Speed Dynamic Balance Test
Gradually balancing from low speed to high speed.
The equilibrium speed is as close as possible to the critical
Balance at rated working speed to ensure balance accuracy.
2. Rotor Test
The wheel rotation fracture test is carried out without damage in
the ground with 122% maximum rotational speed.
Working on the engine at 115% maximum allowable steady-state
operating speed for 5 minutes without cracking and the size is
within the allowable range.
On the engine, exceed the maximum allowable average steady-state
temperature of 42℃, work for 5 minutes without cracking, and the
size is within the allowable range.
3. Vibration Test
20% margin between critical speed and maximum working speed.
During the test of the components and the whole machine, there is
no adverse reaction to the vibration in the working speed range.
4. Performance, Characteristic Test
Performance tests under design conditions.
Characteristic tests under non-design conditions.
Process the test data to determine whether the performance of the
component is up to standard and draw a characteristic curve.
Values Made for Customers
Provide customized design according to user’s paper machine vacuum
system, enables the equipment always working in energy-efficiency
area, which can save 30-60% energy and 100% water for the
papermaking vacuum system. Through the waste heat recovery system,
the level of comprehensive energy utilization will be further
improved. The investment recovery period is 8-18 months. One unit
500kW centrifugal vacuum pump can at least completely replace the
water ring vacuum pump with a total power of 710kW. Each production
line can save 200 Thousand Dollars in electricity for cusomters per year.
Saving money means making money. After adopting our company's
vacuum pump instead of it’s old water ring pump, one listed
papermaking enterprise realized energy saving of 50% and increased
production by 20% under the condition that other parts of the paper
machine remained unchanged. Our vacuum pump has create the value of
20 Million Dollars every year for this papermaking company.
No need for grid expansion and space saving. With frequency
conversion starting, and there is no impact on the power network.
Compared with traditional vacuum systems, this equipment saves more
than half of space.
Below Chart: Power saving data of GooDSeaA centrifugal vacuum in
(The equipment works 24 hours per day, 300 days per year, and the
electricity cost is calculated as 0.7 CNY/kWh.)
Water Ring Pump Efficiency
Electricity costs saved which is equivalent to net profit get
Parameters of High-Speed VF Centrifugal Vacuum Pump
1.Above Design Parameters are obtained based on below conditions:
Suction Medium: Air, Relative Humidity: 65%, Suction Air
Temperature: 35℃, Discharge Pressure: 101.3kPaA
2.For special working conditions or vacuum condition changes, the
vacuum pump can be designed according to
actual demands. Please refer to pre-sale service.