Multi-path Plasma Drilling Power Source for High Output
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Solution Overview
Problem
Traditional plasma drilling power sources are inadequate for multi-path combined high-low voltage plasma drilling due to limited output power, lack of pulse function, and inability for online adjustment, which restricts the application and efficiency of plasma drilling technology.
Innovation Solution
A multi-channel combined high-low voltage plasma drilling power source system comprising a high-voltage DC circuit, low-voltage DC circuits, high-voltage breakdown modules, and an upper computer, which enables real-time monitoring and control of power supply to plasma generators, allowing for multi-path operation and efficient energy distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional plasma drilling power sources are used, then the device complexity is low, but the output power is insufficient and pulse function is lacking
Solution Approach 1:
The power source system is divided into multiple independent low-voltage DC circuits (first, second, third, and fourth circuits) that can operate in parallel. Each circuit can be independently controlled to provide pulse functions, allowing the system to achieve high total power output while maintaining modular complexity that is easier to manage and control.
Solution Approach 2:
The patent combines multiple low-voltage DC circuits with different voltage levels (e.g., 220V, 110V, 55V, 27.5V) into a unified power source system that simultaneously supplies power to multiple plasma generators. This merging of circuits with different characteristics enables the system to deliver both high total power and differentiated pulse capabilities to various drilling elements.
2Productivity
If single-path plasma drilling is used, then the device complexity is low, but the drilling speed is slow
Solution Approach 1:
The drilling system is segmented into multiple independent drilling paths, each with its own plasma generator and control circuit. This allows simultaneous operation of multiple drilling paths in parallel, dramatically increasing overall drilling speed while maintaining independent control over each path's parameters and pulse functions.
Solution Approach 2:
By enabling parallel operation of multiple drilling paths simultaneously, the system achieves continuous and uninterrupted drilling action across multiple locations. This eliminates the sequential limitation of single-path drilling, where one path must complete before another begins, thereby significantly improving productivity.
3Productivity
If high-voltage pulsed plasma drilling technology is used, then the rock breaking efficiency is high, but the energy consumption is high and operation is unstable
Solution Approach 1:
Different low-voltage DC circuits provide different voltage levels tailored to specific drilling requirements and rock conditions. This allows optimization of energy consumption for each local drilling scenario, using higher power only where and when needed, rather than uniformly high energy consumption across all drilling operations.
Solution Approach 2:
The independent control of multiple low-voltage DC circuits enables precise pulse timing and duration control for each drilling path. By optimizing pulse frequency and duty cycle for each specific application, the system achieves high rock breaking efficiency while minimizing overall energy consumption through intelligent periodic action rather than continuous high-power operation.
4Productivity
If plasma arc ablation drilling technology is used, then the drilling speed is high, but the borehole size is small and drill bit life span is short
Solution Approach 1:
The system merges multiple plasma generators with different power levels and characteristics into a single coordinated drilling system. This combination allows distribution of the total drilling load across multiple drill bit elements, reducing the stress and thermal load on any single drill bit, thereby extending drill bit life span while maintaining high overall drilling speed through parallel operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves high drilling efficiency and extended tool life by enabling simultaneous parallel operation of multiple paths without interference, providing large total power and improved drilling performance.
Implementation Method 1
rocks are melt using high temperature generated by a high-power plasma generator at the front end of the drill bit
Implementation Method 2
rocks are broken through the pulse discharge between the positive and negative electrodes at the front end of the drill bit
Implementation Method 3
three-phase alternating current is transmitted to the rectifier circuit in the high-voltage DC circuit, and is rectified into high-voltage direct current
Implementation Method 4
the inverter circuit inverts the high-voltage direct current into high-frequency alternating current according to a control command sent by the PWM control circuit
Implementation Method 5
the transformer circuit transmits the transformed high-frequency alternating current to the secondary rectifier circuit through a cable
Implementation Method 6
the secondary rectifier circuit transmits the rectified low-voltage direct current to a plasma generator through a cable
Data Source
AI summary
An embodiment of the present disclosure provides a multi-path combined high-low voltage plasma drilling power source and drilling system. The multi-path combined high-low voltage plasma drilling power source comprises a high-voltage DC circuit, low-voltage DC circuits, high-voltage breakdown modules and an upper computer; wherein the high-voltage DC circuit is connected with the low-voltage DC circuits through cables; the low-voltage DC circuits and the high-voltage breakdown modules simultaneously supply power to plasma generators through cables; the upper computer monitors the low-voltage DC circuits in real time; and the same power source comprises a plurality of low-voltage DC circuits and high-voltage breakdown modules.