Vacuum system provided with waste gas absorption device and used for full argon-titanium alloy welding workshop

Abstract

The invention relates to a vacuum system provided with a waste gas absorption device and used for a full argon-titanium alloy welding workshop. The vacuum system comprises a vacuum pump system, a cooling system, a valve pipeline system and a data acquisition system. The vacuum pump system comprises a roots vacuum pump A, a roots vacuum pump B, a gas cooling roots pump, a liquid ring pump and a waste gas absorption device. The cooling system comprises a gas cooling roots pump cooler, a gas-liquid separator and a working solution cooler. The valve pipeline system comprises a pneumatic butterfly valve A, a pneumatic butterfly valve B, a water supplementation electric ball valve A, a ball valve, a flange, a water supplementation electric ball valve B and a pipeline. The data acquisition system comprises a DCS data acquisition station, a pressure gauge, a pressure transmitter, a thermometer, a temperature transmitter and a magnetic turnover plate liquid level meter. The vacuum system solves the problem of how to achieve and keep the argon concentration, being 99.99%, required by the titanium alloy welding workshop, the requirement for the absolute pressure, being 10 Pa, required before argon filling can be met through a roots liquid ring pump set, and workshop and welding waste gas can be absorbed through the waste gas absorption device.

Description

technical field [0001] The invention relates to vacuum obtaining equipment and a system for an all-argon-titanium alloy welding workshop. Background technique [0002] Titanium alloys have good toughness and weldability, and are widely used in aviation, shipbuilding and other industries. Titanium is a kind of active metal. During the welding process, it is easily polluted by impurity gases such as oxygen, nitrogen and hydrogen in the air, resulting in embrittlement, which affects the welding quality. [0003] In order to solve the above problems, in practical engineering applications, for the processing of small titanium alloy parts, measures such as partial gas protection or small vacuum welding boxes are used to ensure the quality of the welding process. It is very difficult to provide good gas protection for large and complex titanium alloy parts, such as hulls, large components of submersibles, and large components of aircraft. Usually, the parts are placed in a large ...

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Problems solved by technology

[0008] In order to vacuumize before filling argon, and to solve the influence of air leakage in the airtight cabin and welding waste gas, the present invention proposes a vacuum system for an all-argon titanium alloy welding workshop with a waste gas absorption device, which meets the vacuum degree requirements before filling argon. At the same time, the air leakage caused by the sealing problem and the exhaust gas during welding are sucked away to ensure the welding quality

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