Emergency charging type plasma forcible entry cutting machine circuit

Abstract

The invention discloses an emergency charging type plasma forcible entry cutting machine circuit which comprises a battery B1, a first full-bridge switching circuit, a transformer T1, a first full-bridge rectification filter circuit, a second full-bridge switching circuit and a second full-bridge rectification filter circuit. The two ends of the battery B1 are connected with a primary coil N1 winding of the transformer T1 through the first full-bridge switching circuit; a secondary coil N2 winding of the transformer T1 is sequentially connected with a first full-bridge rectification filter circuit and a second full-bridge switching circuit, the output end of the second full-bridge switching circuit outputs alternating current sine waves through an LC filter circuit for alternating current power supply, and a secondary coil N3 winding of the transformer T1 is connected with the second full-bridge rectification filter circuit. And the output end of the second full-bridge rectifier filter circuit outputs high-voltage direct current as positive and negative electrode output of plasma cutting. The problem that plasma cutting can only be achieved through a high-power power grid is solved, plasma cutting output and alternating current power supply output can be achieved, and then the outdoor machining requirement is met.

Description

technical field [0001] The invention relates to a circuit, in particular to an emergency charging plasma demolition and cutting machine circuit, which belongs to the technical field of plasma cutting machines. Background technique [0002] Plasma cutting machine is a commonly used machining tool in modern industry. When used in specific metal material cutting scenarios, it has more and more outstanding features such as high cutting efficiency, smooth cutting surface and small thermal deformation compared with other cutting machines. It is widely used in a wide range of specific machining fields such as complex shape workpiece cutting and pressure vessel manufacturing. [0003] Plasma cutting is a process in which a high-temperature and high-speed plasma arc is used as a heat source to partially melt the metal to be cut, and at the same time, a high-speed airflow is used to blow away the melted metal to form a narrow incision. Generally, plasma cutting arc forms are: non-tra...

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Problems solved by technology

[0005] (1) The existing plasma cutting technology requires the cutting machine to be connected to a high-power grid, and the AC power of the grid can be inverted into a high-voltage DC to realize plasma cutting. However, this makes it impossible to achieve cutting in outdoor places without AC power;

[0006] (2) If the existing flame cutting technology is used for outdoor cutting, it needs to be equipped with oxygen cylinders and acetylene cylinders. Acetylene is a flammable and explosive gas, and the safety during cutting is not high;

[0007] (3) The existing technology cannot achieve both plasma cutting and AC output on the same circuit

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