Medium and high power constant current chopper voltage regulating plasma torch power source

Abstract

The invention relates to a plasma power source, in particular to a medium and high power constant current chopper voltage regulating plasma torch power source, comprising a three-phase AC incoming line, an isolated step-up transformer ZLB, a total reactor LK1, a rectifier ZL1, power source chopper modules and a PLC. The three-phase AC incoming line is connected to the rectifier ZL1 via the isolated step-up transformer ZLB. The output of the rectifier ZL1 is connected to four ways of power source chopper modules connected in parallel via the total reactor LK1, and then connected to the anode and cathode of a plasma torch. Each way of power source chopper modules is connected in series with a coreless hollow inductor. Current and voltage sampling devices are arranged for each group of powersource chopper modules. The four ways of power source chopper modules are provided with total current and total voltage sampling devices, all current and voltage signals are sent to the input end of the PLC, and the output end of the PLC controls the power source chopper modules. The medium and high power constant current chopper voltage regulating plasma torch power source of the invention is stable and reliable in operation, realizes constant current automatic control, and meets the technical requirements of plasma equipment.

Description

technical field [0001] The invention relates to a plasma power supply, in particular to a plasma torch power supply with medium and high power constant current chopping and voltage regulation. Background technique [0002] At present, the most advanced equipment for domestic and international waste treatment is the plasma gasifier, and the plasma power supply is the key to the normal operation of the plasma gasifier. At present, the mainstream technologies for hazardous waste treatment and disposal include: incineration (rotary kiln, waste liquid incinerator, pyrolysis furnace), physicochemical (filtration, neutralization, redox, air flotation, coagulation, precipitation, demulsification, ultrafiltration, multi-effect Evaporation, MVR evaporation, advanced oxidation, solid-liquid separation, etc.), solidification (stabilized solidification, cement solidification, lime, fly ash solidification), comprehensive utilization (waste oil regeneration, waste organic solvent distillat...

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Problems solved by technology

[0003] The construction of a safe landfill for hazardous waste presents the dilemma of difficult site selection. Due to precious land resources, high site selection requirements, many rigid conditions, NIMBY effect, high construction costs, late closure and maintenance, and potential risks and hidden dangers, safe landfill The actual number of buried projects is small

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