Infrared heating device for coated joints of pipelines
An infrared heating and pipeline technology, applied in the field of pipeline systems, can solve the problems of difficult manual control of the moving speed and uniformity of the heating equipment, the inability to adjust the distance between the heating surface and the pipeline, and affecting the quality of the filling mouth, etc. The effect of compact, broad application prospects
Active Publication Date: 2012-03-07
PIPECHINA SOUTH CHINA CO
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Problems solved by technology
[0005] However, since the heat-shrinkable tape (sleeve) is installed on the pipe, the heat-shrinkable tape (sleeve) will hang under the pipe at a certain distance, and the heating surface of foreign heating equipment and the various positions of the pipe ring can not be adjusted at a certain distance.
When using foreign heating equipment to heat the heat shrinkable tape (sleeve), it will cause uneven heating of the heat shrinkable tape (sleeve) to various positions, which will affect the quality of the joint
In addition, foreign heating equipment adopts the method of moving and heating along the pipeline to avoid foaming during the heating process of the heat shrinkable tape (sleeve). However, the moving speed and uniformity of the heating equipment are difficult to control manually. The guarantee of the quality of the filling has brought a greater impact
Method used
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Embodiment
[0038] Embodiment. This example is an experimental prototype of infrared heating for pipe joints with a diameter of more than Φ1000mm. Its overall structure is as follows: figure 1 , figure 2 As shown, it is mainly composed of a main frame 1, an axial travel and pipe diameter adjustment mechanism, a heating system and a gas control system. The upper part of the ring-shaped main frame 1 with the heating system installed is equipped with two axial travel and pipe diameter adjustment mechanisms, and the gas control system is installed at the lower part of the main frame 1; the gas control system is connected with the heating system by pipelines and controls the intake of the heating system .
[0039] The 12-sided main frame 1 is opened and closed by two hinges and an opening and closing mechanism 5. There is a hoisting mechanism 4 on the upper part of the main frame 1. An axial travel and pipe diameter adjustment mechanism are installed on both sides of the hoisting mechanism 4...
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The invention provides an infrared heating device for coated joints of pipelines, which is suitable for heating of the coated joints of the pipelines, preheating before pipeline welding and heat treatment after pipeline welding. The invention relates to the technical field of pipeline systems. The infrared heating device comprises body frames (1), axial traveling and pipe diameter adjusting mechanisms, a heating system and a gas control system. Two hinges and an opening and closing mechanism (5) control the round or polygonal body frames (1) to open and close. Hoisting mechanisms (4) are arranged on the upper parts of the body frames (1). The two axial traveling and pipe diameter adjusting mechanisms are respectively mounted at the two sides of the hoisting mechanisms (4). The inside of the body frames (1) is provided with the heating system composed of a plurality of LPG catalytic combustion infrared heaters (6), a gas guide pipe (15) and heater nozzles (16). The gas control system connected with the gas guide pipe (15) by a pipeline is mounted on the lower parts of the body frames (1). The gas control system and the heating system are communicated with each other by a pipeline and control air inflow of the heating system.
Description
technical field [0001] The invention is an infrared heating device for pipe jointing, which is suitable for pipeline joint heating, pipeline preheating before welding, and heat treatment after welding. It relates to the technical field of piping systems. Background technique [0002] For the external anti-corrosion of buried pipelines, the commonly used measure is coating protection. As an important part of the entire coating system, the on-site jointing coating should have compatibility and continuity with the main anticorrosion coating structure of the pipeline theoretically, and a tightly bonded, smooth transition, uniform and continuous coating should be formed between the two coatings. protective structure. However, in the process of on-site jointing construction, due to the influence of factors such as climate conditions, construction equipment, and the technical level of construction personnel, the control of the jointing process is much more difficult than that of ...
Claims
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IPC IPC(8): F16L55/18F23C5/08
Inventor 潘红丽刘玲莉王洪涛
Owner PIPECHINA SOUTH CHINA CO