The unstable air pressure of
oil free Screw Air Compressor is often caused by leakage, control failure, load fluctuation and other factors, combined with the characteristics of
oil free compressor,
oil free scroll compressor, centrifugal compressor and other models and the technical experience of
ZAKF screw air compressor manufacturers, the following solutions are targeted. combined with the characteristics of oil free compressor,
oil free scroll compressor, centrifugal compressor and
ZAKF screw air compressor, and
ZAKF screw air compressor's technical experience, the following are targeted solutions:
I. Accurate positioning and repair of system leakage
System leakage is a common cause of unstable air pressure, especially need to pay attention to the PTFE pipe interface of oil free Screw Compressor (the leakage rate can be more than 1% when aging) and Water lubricated oil free compressor's water ring seals (insufficient water level will lead to a surge in leakage). For centrifugal compressors For centrifugal compressors, impeller labyrinth seal clearances exceeding 0.2 mm require immediate replacement. zakf has used helium mass spectrometry leak detectors (with an accuracy of 1×10-⁹ Pa/m³/s) to test oil free scroll compressor piping and has located 0.05 mm of leakage in a Korean LCD plant. A Korean LCD factory located a 0.05mm micro-leakage point, and the stability of air pressure increased by 90% after repair.
Troubleshooting of Control Components
Pressure Sensor Malfunction: If the pressure sensor of the oil free compressor has zero point drift (e.g. the error of a photovoltaic project reaches ±0.8 bar), it is necessary to recalibrate the sensor with an ASME-certified calibrator or replace it with a customized sensor from ZAKF (compatible with CE/PED standard).
Abnormal air inlet valve: The air inlet servo cylinder of screw air compressor is prone to seal hardening and jamming under high temperature environment, resulting in fluctuation of air inlet volume. zakf has developed a hydraulically actuated air inlet valve for water lubricated oil free compressor, with a response time of ≤0.3 seconds, which can control air pressure fluctuation to within ±0.1bar.
Compressor body performance optimization
Screw rotor wear: When the radial clearance of the rotor of an oil free screw compressor exceeds 0.08mm (standard value 0.03-0.05mm), for example, the equipment of an automobile factory in Germany has experienced air pressure fluctuations of 1.2bar as a result. ZAKF grinds the rotor through a five-axis machining center (accuracy ±0.002mm) and wears a tungsten carbide coating to make the rotor more durable and more durable. ZAKF grinds the rotors with a 5-axis machining center (accuracy ±0.002mm) and applies tungsten carbide coating, resulting in an annual increase in wear of less than 0.005mm.
Cooling system failure: Centrifugal compressor cooler fouling can cause exhaust gas temperature to exceed 100°C and trigger unloading. zakf recommended water lubricated oil free compressor to use softened water + corrosion inhibitor, and a beverage factory applied it to increase cooling efficiency by 25% and reduce air pressure fluctuation significantly.
Intelligent control of load and piping network
Sudden load fluctuations: New equipment in semiconductor factories often leads to a surge in air consumption, causing a sudden drop in air pressure in the oil free scroll compressor. ZAKF's solution is to configure an intelligent storage tank (with a capacity of 1.5 times the minute exhaust volume) combined with frequency control, which was used to reduce fluctuations in air pressure in a Taiwan wafer fab from ±1.5bar to ±0.3bar. Pipe network optimization: By upgrading the Screw Air Compressor pipe network, for example by upgrading from DN50 to DN80 and reducing the number of elbows by 40%, a chemical plant was able to reduce the pressure loss from 0.6 bar to 0.2 bar.
V. ZAKF Customized Solutions
ZAKF equips oil free compressor with IoT smart diagnostic module, which monitors vibration and pressure in real time (accuracy ±0.1%), and predicts fluctuation of air pressure and adjusts parameters in advance through AI algorithm. Relying on 7 warehousing bases, ZAKF ensures that core spare parts (e.g. rotors, sensors) of screw air compressor can be delivered within 15 days in Southeast Asia/Middle East, and has once repaired the unstable air pressure for a food factory in Thailand within 4 hours.
VI. Model-specific solutions
oil free scroll compressor: Scroll disk coating wear is prone to cause internal leakage, can be replaced with ZAKF ceramic coated scroll disk, service life is extended by 3 years.
centrifugal compressor: impeller dust buildup can upset the dynamic balance, ZAKF offers an on-line cleaning service that restores efficiency to 98%.
Water lubricated oil free compressor: Water ring pump bearing corrosion affects speed stability, which can be solved with ZAKF's 316L stainless steel bearing + IP65 rated design.
As a manufacturer of 2,500 screw air compressors per month, ZAKF offers a full-cycle service from troubleshooting to component repair for oil free compressor users with 20 years of experience and 60,000 square meters of production facilities. For air pressure stabilization solutions (including customized CE/ASME certified models) for your application, please contact the ZAKF team and let the global after-sales network and fast spare parts supply be the solid support for the stable operation of your equipment.
