Visualized high-efficiency tube-sheet welding system

Abstract

The invention provides a visual efficient tube plate welding system. The visual efficient tube plate welding system comprises a main circuit, a welding process control system, a visual man-machine interaction system, a tube plate welding machine head, a high frequency arc ignition circuit, a water cooling device, a protective gas supply device and a voltaic arc load connected with the tube plate welding machine head. The welding process control system is connected with an alternating current input power source, the main circuit, the visual man-machine interaction system and the tube plate welding machine head respectively. The input end of the high frequency arc ignition circuit, the input end of the water cooling device and the input end of the protective gas supply device are connected with the welding process control system, and the output end of the high frequency arc ignition circuit, the output end of the water cooling device and the output end of the protective gas supply device are connected with the tube plate welding machine head. One end of the main circuit is connected with the alternating current input power source, and the other end of the main circuit is connected with the tube plate welding machine head. The visual efficient tube plate welding system achieves visual man-machine interaction, parameter setting is accurate, and operation is visual and convenient. Through the ARM digital control technology based on Cortex-M4, the tube plate welding process is accurate and flexible. The advanced 100-kHz-grade high frequency invert technology is adopted, the energy is saved, the materials are saved, and field application is convenient.

Description

technical field [0001] The invention relates to a welding process and equipment technology, in particular to a visualized and efficient tube sheet welding system. Background technique [0002] In recent years, in order to meet the demand for electricity, all parts of the country have stepped up the construction of new power plants and power plant capacity expansion. In the power construction industry, the manufacture of medium and large condensers / heat exchangers is particularly important. There are a large number of fillet joints between tube sheets and heat exchange tubes in the condensers of power plants. The quality of the welds is the key to the manufacturing quality of the entire equipment, and the requirements for the compactness and mechanical properties of the welds are extremely strict. According to statistics, more than 90% of pipe head leakage is caused by welding quality. Titanium alloys have good corrosion resistance and have been widely used in power station ...

AI Technical Summary

Problems solved by technology

Since the late 1980s, my country has introduced a number of tube-sheet automatic welding machines. Due to the low dimensional accuracy of domestic tubes and the quality problems of expansion joint assembly, the results of use are not satisfactory.

In recent years, various types of tube-sheet automatic welding machines have been developed in China, but most of them are imitations, and the process adaptability of some products is not ideal enough, and the price is relatively high

Although there have been research and application reports on the full-digital tube-sheet automatic welding machine, its inverter frequency is only 20kHz, the size of the welding machine is too large, the dynamic response performance is not fast enough, and it does not have visual operation and management functions.

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