Vertical Shaft Drilling Rig Frequency Conversion Electronic Control Design and Its Energy Saving and Noise Reduction...

Area of Science:

• Engineering
• Geological Drilling Technology

Background:

• Traditional vertical shaft drilling rigs face challenges with inconsistent speed regulation, high energy consumption, and excessive noise.
• These limitations hinder operational efficiency and adaptability to varied geological conditions.

Purpose of the Study:

• To propose and validate a frequency conversion control scheme for retrofitting traditional vertical shaft drilling rigs.
• To enhance drilling efficiency, reduce energy consumption, and improve operational safety and sustainability.

Main Methods:

• Implemented a variable frequency drive (VFD) for stepless speed adjustment via dynamic control of motor frequency and voltage.
• Conducted theoretical analysis and experimental testing to validate the proposed control scheme.
• Incorporated safety features such as overcurrent and overvoltage protection into the electronic control system.

Main Results:

• Achieved continuously variable speed regulation, enhancing drilling efficiency and adaptability.
• Demonstrated over 35% reduction in electricity usage, translating to significant annual energy savings.
• Reduced average noise levels from 94.28 dB to 89.51 dB, falling below the 90 dB occupational exposure limit.
• Verified enhanced operational safety through integrated protection features.

Conclusions:

• The inverter-based retrofit offers a viable solution for modernizing traditional drilling rigs.
• The proposed scheme advances drilling equipment towards greater efficiency, intelligence, and sustainability.
• Provides valuable technical insights for upgrading geological drilling equipment.