Intrinsically safe power supply

Abstract

The invention discloses an intrinsically safe power supply. The intrinsically safe power supply includes an isolation transformer, a voltage limiting module and a current limiting module; a primary side of the isolation transformer is connected to a power supply end of a power supplying module; a secondary side of the isolation transformer is connected to an input end of the voltage limiting module and an input end of the current limiting module; an output end of the voltage limiting module is connected to a ground; an output end of the current limiting module is connected to a power supply end of an electrical device; the voltage limiting module is used for limiting the voltage which is output to a danger area by the power supplying module; the current limiting module is used for limitingthe current which is output to the danger area by the power supplying module. The intrinsically safe power supply may be placed in the danger area, controls energy which is output to a danger area, and can meet the anti-explosion demand, can provides a intrinsically safe power supply for the electric device in the danger area, is high in safety, and can provide more possibilities for multifunctional application of the intrinsically safe circuit in the danger area.

Description

technical field [0001] The invention relates to the explosion-proof field, in particular to an intrinsically safe power supply. Background technique [0002] In flammable and explosive places such as petrochemical industry and coal mine, relevant electrical equipment is usually equipped due to production needs. In the prior art, intrinsically safe power supplies are generally used to supply power to electrical equipment in hazardous areas. At present, intrinsically safe power supplies on the market can only be installed in safe areas, so the energy transmitted from the safe area to the dangerous area may be affected by the transmission environment, and it is not easy to be controlled. When the energy transmitted to the dangerous area is too large, it may It will ignite the explosive mixture and cause a safety accident. [0003] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. Contents...

AI Technical Summary

Problems solved by technology

At present, intrinsically safe power supplies on the market can only be installed in safe areas, so the energy transmitted from the safe area to the dangerous area may be affected by the transmission environment, and it is not easy to be controlled. When the energy transmitted to the dangerous area is too large, it may Will ignite explosive mixture, causing safety accidents

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