Turbine (centrifugal) Vacuum Pump

Air Volume: 60~1000 m3/min       Vacuum Degree: -20 ~-80 kPa.

The high-speed variable-frequency vacuum system uses advanced aero-engine technology, and refers to the military nuclear power quality assurance standards in the design, processing, manufacturing and testing. It has the advantage of superior performance, stable quality and high cost performance.

Focus on papermaking industry. The impeller adopts aviation high-temperature & high-strength alloy material, anode passivation treatment, wear-resisting, corrosion-resistant, MEKPO (Ketone Peroxide)-resistant, pulp fiber impact-resistant; it can serve 30 years without repair and maintenance.

Compared with imported turbo vacuum pump, the modification cost can be saved by more than 50% under the same installed power.

Compared with traditional vacuum pumps, energy saving: 30-50%, water saving: 100%. Through water heat recovery system, the utilization level of energy is further improved.

Unique Advantage of Paper Machine Vacuum Systems         

Adopt variable frequency technology, the speed and the power of vacuum pump can be adjusted with the changes of parameters of paper production line, which keep vacuum pump always working in the best operating condition.

Vacuum system is completely customized design. The most reasonable vacuum point is selected according to the operation conditions of user's paper machine. The vacuum degree is close to the point, suction point is combined to make the high-speed centrifugal vacuum pump efficient and always run at high-efficiency zone of the pump’s and the motor’s characteristic line.

Centrifugal vacuum pump has single-stage and double-stage structures. One device can pump two different vacuum degrees, so one centrifugal vacuum pump can replace multiple water ring vacuum pumps. The device is compact and the output parameters are adjustable.

Provide complete vacuum equipment and system solutions: Including steam-water separator, cooler, filtrate pump, muffler, valve, instrument, pipe fitting and fully automatic control system for online monitoring of vacuum degree and pumping flow.

What can Paper Machine Vacuum System Bring to User?

Aviation Design Concept - Impeller

Using finite element analysis software of NASTRAN, ANSYS, Abaqus, etc., to carry out one-dimensional geometric and thermal design, two-dimensional flow design, three-dimensional blade design and strength check of impellers and blades. Through simulation, it can be judged whether the impeller design meets the design standards of aero-engine, and the service life of the impeller can be predicted. Create high-efficiency aviation-grade impellers with the best "power energy efficiency ratio".

High-speed Tilting Pad Bearing

Adopt horizontal split-type tilting-pad bearing which made by material of ISI 1040 carbon steel (inner) and babbitt alloy (surface), when the speed load changes, the bearing diagonal block is automatically centered, this automatic adjustment function can ensure the machine’s smooth operation.

Aviation Standard High Speed Gearbox

Horizontal split gearbox structure is used with aviation standard processing, manufacturing, debugging and inspection, with built-in high-speed forged alloy steel precision helical gears, the horizontal center divides the cylinder into upper and lower halves and connect by bolts, modular structure design is convenient for maintenance and repair.

High Efficiency Removable Cooler and Air Intake Adjustment

The cooler is separated from the gearbox, and the lubrication system is perfectly separated from the compressed air, ensuring that the compressed air is 100% clean and oil-free. Removable cooler, tube bundles is precisely matched with the finished shell, which can effectively improve the heat exchange rate between compressed air and water and reduce the consumption of cooling water.

By adjusting the installation angle of inlet guide vane of the impeller, the pre-rotation of airflow can be adjusted within a range of 70-105%.

Impeller Dynamic Balance Test

Using advanced dynamic balance testing equipment, according to the requirements of "Dynamic Balance Test Procedure", a strict dynamic balance testing is carried out on each impeller and shaft assembly to ensure the balance and stability during high-speed operation.

Advanced Large Screen PLC Monitoring System

The control system includes a PLC controller and various sensors, and also with its own low-voltage control cabinet. Including but not limited to the following protection and control functions: auxiliary oil pump on/off, compressor on/off, emergency stop; Indicator light: auxiliary oil pump running, compressor ready to start, main motor running & alarm, etc.; Instruments: current, pressure, oil pressure and other monitoring instruments; Display the compressor operating parameters; Monitor the compressor operation and automatically alarm and shut down; The exhaust flow and pressure can be set and adjusted by users.

The system predicts surge through differential pressure change, and realizes flow regulation by controlling the inlet guide vane and bypass valve, automatically tracks the change of surge line, adjusts surge control points, and ensures safe and reliable operation from low load to full load.

Automatically check the compressor startup conditions; Monitor the components requiring maintenance, and have sensor self-inspection function; With Manual, single, local and remote (central control room) control switching function; With RS485 communication interface, it can not only monitor the compressor operation independently, but also can upload the relevant monitoring data to the user monitoring center through the LAN network to achieve real-time information feedback; The unit provides up to 31 display items, 13 alarm control items and 12 shutdown control items.

Strict Production and Manufacturing Process

Design, manufacture and assembly follow strict aviation standards and military nuclear quality assurance program requirements to effectively ensure the quality and operational reliability of equipment.