Arc welding power supply for welding pipeline

A technology of arc welding power supply and pipeline, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as unsatisfactory, large volume, affecting welding speed and quality product cost performance, etc., to achieve volume reduction and weight reduction Effect

Inactive Publication Date: 2007-11-14
上海丰建机械设备成套有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a multi-purpose arc welding power supply, although its output capability and protection level are relatively good, its V-I (volt-ampere) characteristic curve is not ideal when it is used for manual welding (SMAW), especially in small currents. (50A~150A) the voltage is lower than that of high current (200A~400A), which will affect the welding speed and quality as well as the cost performance o

Method used

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  • Arc welding power supply for welding pipeline
  • Arc welding power supply for welding pipeline
  • Arc welding power supply for welding pipeline

Examples

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Embodiment Construction

[0014] The structure shown in Figures 1 and 2.

[0015] The primary of the output transformer 1 consists of a winding W 1-1 , W 1-2 constituted, the secondary consists of two main windings W 2 , W 3 and two secondary windings W 4 , W 5 constitute. The four windings of the secondary W 2 , W 3 , W 4 , W 5 Respectively with the four rectifier tubes V in rectifier 2 D1 , V D2 , V D3 , V D4 connected. In both secondary windings W 4 , W 5 with two rectifiers V D3 , V D4 The current-limiting inductance L is connected in series respectively 1 , L 2 .

[0016] Said rain-proof ventilation louver forming cooling device 4 is formed by the continuous stamping and forming of thin steel plate. Its blades 401 form an inclination angle of α=45°, and the section of the blades 401 is arc-shaped R. The window surface of the louver covers the heat dissipation surfaces of all rectifiers 2 radiators 201 . as shown in picture 2.

[0017] The V-I characteristic curve obtained b...

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Abstract

The present invention relates to an arc welding power supply for welding pipeline. It mainly includes output transformer whose secondary has two main windings and two auxiliary windings, rectifier with radiator and four rectifying tubes which are contained in the rectifier and correspondent to the above-mentioned four windings of output transformer, and between the radiator of rectifier and cooling device formed from weatherproof ventilating shutter an air-tight device is set. Said invention can attain the goal of highly outputting voltage in the main cellulose electrode electric arc working zone and attain maximum volt-ampere characteristic oblique deascension envelope.

Description

technical field [0001] The invention relates to an arc welding power source, in particular to an arc welding power source for pipeline welding. Background technique [0002] The arc welding power source required for the field manual arc welding process of large-diameter and long-distance gas pipelines has special performance requirements. It requires a portable 400A inverter arc welding power supply with small size, light weight, high load rate (100%) and high protection level (IP21-IP23). [0003] Prior Art [1] In the United States, Miller Electric Mfg.CO. provides an arc welding power supply (see the product specification of "Invision456p and Phoenix456cc / cv", TM-2213A, 1997, 9). As a multi-purpose arc welding power supply, although its output capability and protection level are relatively good, its V-I (volt-ampere) characteristic curve is not ideal when it is used for manual welding (SMAW), especially in small currents. (50A~150A) the voltage is lower than that of high...

Claims

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Application Information

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IPC IPC(8): B23K9/10
Inventor 张铁
Owner 上海丰建机械设备成套有限公司
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