Magnetic-saturation intrinsically-safe power supply

Abstract

The invention provides a magnetic-saturation intrinsically-safe power supply. The power supply comprises an alternating current power supply input module, a rectifying and filter circuit module, a voltage regulating circuit module and an intrinsically-safe power supply output module which are electrically connected sequentially. The power supply is characterized by also comprising a magnetic-saturation voltage stabilizing circuit module which is electrically connected between the alternating current power supply input module and the rectifying and filter circuit module. The magnetic-saturation intrinsically-safe power supply is good in voltage output stability, wide in voltage stabilizing range, high in reliability, capable of improving the voltage stabilizing effect further so as to achieve explosion-isolation and explosion-proof effects and particularly suitable for power supply to electrical devices in hazardous environments with explosive or flammable gases, steam, liquids and the like.

Description

technical field [0001] The invention relates to a power supply device, in particular to a magnetically saturated intrinsically safe power supply, which is particularly suitable for powering electrical equipment in an explosive gas environment. Background technique [0002] Intrinsically safe power supply is an intrinsically safe power supply, which refers to a power supply with intrinsically safe performance in the highest output voltage and maximum current under normal operation and extreme fault conditions, and intrinsically safe performance refers to intrinsically safe power supply circuits in the standard Any electric spark or any thermal effect produced under the conditions cannot ignite the specified explosive gas environment, and the communication, monitoring, alarm and disaster used in coal mines, petroleum, chemical and other dangerous environments with explosive or flammable gases, steam, liquids, etc. It plays a vital role in equipment such as prediction and preve...

AI Technical Summary

Problems solved by technology

The design idea of ​​the intrinsically safe power supply is to stabilize the input power so that the output power will not mutate with the instantaneous mutation of the input voltage and affect the electrical equipment at the back end. Most of the existing intrinsically safe power supplies are for the DC section of the back end. Do voltage stabilization processing, but when the front-end mains power jumps from 110 to 260V, a very strong pulse will be generated, and the pulse will be amplified step by step and seriously affect the back-end control circuit, thereby increasing the work of the back-end voltage stabilization circuit Load, therefore, the voltage stabilization effect of the existing intrinsically safe power supply needs to be further improved

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