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Welding machine electricity-saving circuit with unidirectional thyristor

A technology of unidirectional thyristor and electric welding machine, which is applied in the direction of arc welding equipment, welding rod characteristics, welding equipment, etc., can solve the problems of personal electric shock casualties, waste of electric energy, and reduce the power factor of the power grid, etc., to achieve convenient operation, simple action, and increase power Factor effect

Inactive Publication Date: 2010-10-13
SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only wastes a lot of electric energy in vain, but also reduces the power factor of the power grid, and even causes personal electric shock casualties

Method used

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  • Welding machine electricity-saving circuit with unidirectional thyristor
  • Welding machine electricity-saving circuit with unidirectional thyristor

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing.

[0012] Such as figure 1 As shown, a kind of unidirectional thyristor electric welding machine power-saving circuit of the present invention includes a power supply 1, a power switch 2, a welding machine transformer 3, and a welding tongs 4 connected in sequence, and also includes two unidirectional thyristors 5, and a welding tongs switch 6 , the two one-way thyristors 5 are reversely connected in parallel between the power switch 2 and the welding machine transformer 3, wherein the control pole of one one-way thyristor 5A is connected to one end of the welding clamp switch 6, and the other one-way thyristor 5B The control pole is connected with the other end of the welding tongs switch 6.

[0013] Among them, the thyristor is composed of two layers of P-type and two layers of N-type semiconductors, and three PN junctions are formed at the interface of these four layers of...

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Abstract

The invention relates to a welding machine electricity-saving circuit with unidirectional thyristors. The welding machine electricity-saving circuit comprises a power supply, a power supply switch, a welding machine transformer and a welding tong which are sequentially connected. The invention is characterized in that the welding machine electricity-saving circuit also comprises two unidirectional thyristors and a welding tong switch, wherein the two unidirectional thyristors are connected in parallel between the power supply switch and the welding machine transformer in a reversed polarity way, wherein the control electrode of one unidirectional thyristor is connected with one end of the welding tong switch, and the control electrode of the other unidirectional thyristor is connected with the other end of the welding tong switch. The invention has the advantages of low circuit power consumption, convenient operation, simple and fast action, sensitivity, reliability and strong practicability.

Description

technical field [0001] The invention relates to a power-saving circuit, in particular to an electric welding machine power-saving circuit of a one-way thyristor. Background technique [0002] AC welding machine is one of the indispensable welding tools at the construction site, but in the actual use of underground excavation projects such as subways, heat pipelines, power tunnels and civil air defense, since the main material in the construction is a large number of steel bars Dozens of electric welding machines work at the same time every day for the welding of arches, mesh sheets, and metal pipes. In electric welding work, a lot of auxiliary work is often done from welding one weld to welding the next. Work. At this time, the welding machine is in the no-load operation state, and there is still no-load current flowing in the primary winding of the welding machine transformer. Sometimes workers forget to turn off the power supply when eating or leaving get off work. Like ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10B23K9/28
Inventor 于乾波
Owner SHANGHAI HUGONG ELECTRIC WELDING MACHINE MFG