Temperature monitor system for soldering longitudinal joint of cylinder of pressure container

Abstract

The invention relates to a temperature monitor system for soldering a longitudinal joint of a cylinder of a pressure container. According to the temperature monitor system, at least four temperature-detection probes are adsorbed to one side which is 50mm from the groove of the cylinder and is close to a welding machine, and are respectively connected with terminal collection and control equipment by virtue of transmitters; the terminal collection and control equipment is connected with the power supply of the welding machine by virtue of a three-phase solid-state relay. The temperature-detection probes are directly adsorbed to the cylinder by virtue of magnets, are convenient to assemble, and can be used for avoiding the situation of inaccurate temperature detection due to the fact that welding flux is adsorbed to the surface of the cylinder; reasonable operation of field personnel can be guaranteed by means of the real-time display function and signal light promoting function of the terminal collection and control equipment, and the production efficiency can be improved; the whole system can be used for in-time accurately recording and saving temperature information and time information of pre-heating, interlamination and after-heating in the process of welding the longitudinal joint of the cylinder of the pressure container, provides basis to coherence and traceability of welding quality, and has a great promoting effect for digital production of the whole manufacture industry.

Description

technical field [0001] The invention relates to a temperature monitoring system, in particular to a temperature monitoring system for longitudinal seam welding of a pressure vessel cylinder body. Background technique [0002] Pressure vessels are important equipment commonly used in various sectors of the national economy such as energy industry, scientific research and petrochemical industry. Important components, the most critical process of manufacturing is welding. Due to the complex working conditions of the cylinder and the serious consequences of accidents, it is very important to carry out quality control during the welding process. [0003] Before the longitudinal seam of the cylinder is welded, in order to reduce the welding stress and improve the crack resistance of the welded joint, it is necessary to preheat the entire cylinder or the area greater than 200mm from the center of the longitudinal seam on both sides. When the preheating temperature meets the proces...

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Problems solved by technology

[0005] In view of the deficiencies of the above temperature monitoring technology, the present invention proposes a temperature monitoring system for the longitudinal seam welding of the pressure vessel cylinder, aiming at solving the problem of discontinuous traditional manual measurement and poor measurement accuracy caused by the large influence of the existing infrared measurement on the environment. high problem

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