CN2331470Y

CN2331470Y - Three-phase symmetrical moving iron-core type silicon arc-welding rectifier

Info

Publication number: CN2331470Y
Application number: CN 98229070
Authority: CN
Inventors: 吴永泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-08
Filing date: 1998-07-08
Publication date: 1999-08-04
Anticipated expiration: 2008-07-08

Abstract

The utility model relates to a three-phase symmetrical moving iron-core type silicon arc-welding rectifier, which is an electric welder for welding metal. The utility model is characterized in that three moving iron-core type silicon arc-welding transformers with same parameter are arranged in a row; three moving iron-cores whose axial lines form a straight line can simultaneously move forward and backward on a same pair of rails, simultaneously adjusting the magnetic leakage of the three transformers; the primary poles of the three transformers can be assembled and be connected with a three-phase alternating-current power supply; the secondary poles can be matched with a silicon diode rectifier of three-phase and full-wave and output the adjustable direct-current for welding.

Description

Three symmetrical moving core type silicon arc welding rectifiers

This novel silicon arc welding rectifier that relates to a kind of practicality, on purposes, it is a kind ofly to be input as three-phase alternating current and to be output as the electric welding machine of direct current, can be used for manual electric arc welding, argon arc welding, PLASMA ARC WELDING or cutting, carbon arc air gouging etc.Its characteristics are three-phase equilibrium, simple structure, with low cost, reliability and durability etc.

Classification [1 according to the Welding Technology and Equipment specialty, 2], silicon arc welding rectifier be a kind of electricity source for dc arc welding it with silicon diode as rectifier cell, with AC rectification is direct current, in order to obtain to pulse little and direct current and make the electrical network three-phrase burden balance stably, usually all must adopt rectified three-phase circuit,, not have the moving core type silicon arc welding rectifier of three-phase equilibrium to use before this is novel as yet because the three-phase transformer of integral type is difficult to the moving iron core that configuration adjustment electric current is symmetrically used.The moving winding type silicon arc welding rectifier of this novel and existing three-phase belongs to together and strengthens the leakage field class, utilizes the leakage field that changes between the primary and secondary to regulate output current, and its structural principle is presented below, and sees accompanying drawing.

Three identical moving core type arc welding transformers of parameter are lined up front and back one row by diagram, make three moving axis unshakable in one's determination in alignment, the spacing of three transformers should guarantee that moving iron core has enough strokes that freely shifts out shift-in, connect three-phase alternating-current supply after three transformers elementary connected by star (or triangle) connection, secondaryly connect back and typical three-phase by triangle (or star) connection and matched by bridge rectifier entirely and get final product the very little direct current of output ripple.

With a rhizoid bar three moving iron cores are associated in together, it can be moved forward and backward along moving axis direction unshakable in one's determination on same pair of guide rail simultaneously, its kind of drive is similar with common moving core type arc welding transformer.Shift out three moving iron cores simultaneously, the leakage reactance of three arc welding transformers reduces synchronously, and output current increases, simultaneously three iron cores of shift-in, then the leakage reactance of three arc welding transformers increases synchronously, output current reduces, and can reach the purpose of regulating welding current within the required range, because the parameter of three transformers is identical, regulating moving iron core carries out synchronously, the three-phase circuit symmetry, this novel three-phase input balance, power factor is higher.

Because this novel three-phase equilibrium, output ripple seldom generally can save the direct current reactor that is used for filtering, has reduced cost, and in addition, this does not novelly have an other electron component except that diode, link is less, thereby reliability is higher.List of references: [1] " Arc Welding Power " Huanan (South China) Polytechnic College Huangshi is given birth to and is compiled China Machine Press, and China Machine Press, 1996 are compiled in Zheng Yi front yard South China Science ﹠ Engineering University of [2] " Arc Welding Power " BJ University of Aeronautics ﹠ Astronautics Huangshi intercrescence in 1980

Claims

A kind of silicon arc welding rectifier of practicality, dc welding machine, it is characterized in that three identical moving core type arc welding transformers of parameter are lined up front and back one row, make three moving axis unshakable in one's determination in alignment, three moving iron cores can be simultaneously shift out leakage field with three transformers of adjusted in concert from the fixed core shift-in synchronously, connect three-phase alternating-current supply after three transformers elementary connects by star or delta connection, secondaryly match for welding with output DC stream by triangular form or star connection and typical three-phase full wave bridge rectifier.