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A mixed gas automatic proportioner for gas shielded welding and its proportioning method

A gas shielded welding and gas mixing technology, applied in mixing methods, gas and gas/vapor mixing, chemical instruments and methods, etc., can solve problems such as low accuracy, insufficient gas mixing ratio, and no digital display on the proportioner. , to achieve the effect of fast response

Active Publication Date: 2021-02-19
HARBIN WELDING INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Up to now, the traditional mechanical manual adjustment gas mixing proportioner is commonly used in the market. This type of proportioner has no digital display, low accuracy, and the gas mixing ratio is not uniform enough, which seriously affects the welding quality.

Method used

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  • A mixed gas automatic proportioner for gas shielded welding and its proportioning method
  • A mixed gas automatic proportioner for gas shielded welding and its proportioning method
  • A mixed gas automatic proportioner for gas shielded welding and its proportioning method

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specific Embodiment 1

[0041] according to figure 1 and Figure 5 As shown, the present invention provides an automatic proportioner for gas shielded welding, the proportioner includes a gas source 1, a gas source 2, a decompression device 1, a decompression device 2, a pressure transmitter device 1, Pressure transmitter device 2, solenoid valve 1, solenoid valve 2, SMC vortex flowmeter 1, SMC vortex flowmeter 2, PLC control system, gas analyzer and mixer buffer tank;

[0042] The gas source 1 is connected to the decompression device 1, the decompression device 1 is connected to the pressure transmitter device 1, the pressure transmitter device 1 is connected to the solenoid valve 1, the solenoid valve 1 is connected to the SMC vortex flowmeter 1, and the SMC vortex flowmeter 1 Connect the buffer tank of the mixer;

[0043] The gas source 2 is connected to the decompression device 2, the decompression device 2 is connected to the pressure transmitter device 2, the pressure transmitter device 2 is ...

specific Embodiment 2

[0046] according to Figure 2 to Figure 4 As shown, the present invention provides a kind of mixed gas automatic proportioning method for gas shielded welding, comprising the following steps:

[0047] Step 1: enter the mixing control stage;

[0048] The step 1 is specifically:

[0049] Step 1.1: After the two mixed gases are respectively output from gas source 1 and gas source 2, after the pressure is reduced to the set pressure by the pressure reducing device, the PLC control system controls the switch of the solenoid valve to control the flow into the buffer gas tank of the mixer;

[0050] Step 1.2: Use the SMC vortex flowmeter to detect the flow of the two mixed gases respectively, use the thermal conductivity gas analyzer to analyze the content of one gas in the buffer gas tank of the mixer, and send the analysis results to the PLC control system, PLC The control system compares the current mixing tank pressure with the set pressure, and determines the amount of the two ...

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Abstract

The invention relates to an automatic proportioner for mixed gas used in gas shielded welding and a proportioning method thereof. The proportioner includes air source 1, air source 2, decompression device 1, decompression device 2, pressure transmitter device 1, pressure transmitter device 2, solenoid valve 1, solenoid valve 2, SMC vortex flow Meter 1, SMC vortex flowmeter 2, PLC control system, gas analyzer and mixer buffer tank; the present invention can ensure that the mixing error accuracy of two mixed gases is less than or equal to 1%; input and output mixed gas pressure and two kinds of gas mixing The ratio can be adjusted online at any time; the user can adjust the pressure and the precise percentage of the mixing ratio steplessly through the touch LCD of the controller; the gas mixing process of the present invention is efficient and safe. The built-in equal pressure adjustment device of the equipment ensures that the gas mixing accuracy is not affected Influenced by inlet pressure changes, the response speed of gas intake is fast.

Description

technical field [0001] The invention relates to the technical field of gas shielded welding, and relates to a mixed gas automatic proportioner for gas shielded welding and a proportioning method thereof. Background technique [0002] Mixed gas is used more and more widely as a shielding gas in the welding process. In the rapidly developing manufacturing industry of intelligent automation, gas shielded welding has gradually replaced electrode arc welding. However, pure CO2 or pure Ar as a shielding gas can no longer meet the welding requirements of more and more complicated processes and materials. The mixed gas shielded welding is better than pure CO in terms of the appearance of the weld, the quality of the welded joint, the depth of penetration, the welding speed, the welding spatter, and the stability of the welding arc. 2 Or pure Ar gas shielded welding has been greatly improved. At present, with the improvement of my country's welding technology level and automation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/02B01F23/10
CPCB01F23/191
Inventor 梁晓梅方乃文黄瑞生李连胜周坤赵宝徐亦楠杨义成马一鸣邹吉鹏付傲
Owner HARBIN WELDING INST LTD