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

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This study introduces a frequency conversion control scheme for vertical shaft drilling rigs, significantly improving efficiency and reducing energy consumption. The retrofit enhances operational safety and sustainability in geological drilling equipment.

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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.