Heating device used for pipe orifice preheating

A heating device and pipeline technology, which is applied in the field of welding and pipe nozzle preheating, can solve the problems of construction environment influence, uneven temperature, large heat loss, etc., and achieve safe and reliable use, improve weld quality, and fast heating speed Effect

Inactive Publication Date: 2019-09-17
BEIJING ZHONGKUN JIADA TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: 1. The temperature is not uniform, and the welding cannot meet the technical requirements
2. Affected by the construction environment, the heat loss is large, and multiple baking is required to realize the welding of the nozzle
3. Serious pollution at the construction site

Method used

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  • Heating device used for pipe orifice preheating

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specific Embodiment approach 1

[0009] A heating device for preheating the nozzle of a pipeline, including installing the induction coil 1 on the heat insulation material 4, potting it in a flexible shell 5, wrapping it along the circumference of the pipeline, and connecting the sb variable frequency power supply 2 and the temperature sensor 3 After being installed in the middle of the induction coil, it is connected with the temperature control device 6 and then connected with the sb variable frequency power supply. The principle of the present invention is to output the intermediate frequency electricity to the induction coil 1 through the sb variable frequency power supply 2, and the intermediate frequency electricity forms an eddy current on the surface of the pipe body 4 through the induction coil 1 to realize heating. The temperature control device 6 controls the output of the sb variable frequency power supply according to the set temperature required for nozzle preheating and the real-time temperature...

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Abstract

A heating device used for pipe orifice preheating is mainly used for preheating a pipe orifice before pipeline welding construction, and mainly comprises an induction coil, a sb frequency conversion power source, a temperature sensor, a thermal insulation material, a flexible shell and a temperature control device. After being mounted on the thermal insulation material, the induction coil is encapsulated in the flexible shell, then after circumferential wrapping is carried out along a pipeline, the sb frequency conversion power source is turned on, and after intermediate frequency electricity is output into the induction coil through the sb frequency conversion power source via power frequency electricity, vortexes are formed in a pipeline body to achieve heating. The temperature control device controls output of the sb frequency conversion power source according to the set temperature required by pipe orifice preheating and the real-time temperature measured by the temperature sensor. The thermal insulation material achieves the function of thermal insulation on the induction coil. The heating device has the advantages of being reasonable in structure, safe, reliable, convenient to use and free of disturbance of outside temperature.

Description

technical field [0001] The invention relates to a heating device for preheating the nozzle of a pipeline, and relates to the fields of preheating and welding of the nozzle of a pipeline. Background technique [0002] In the welding construction process of the existing pipe nozzle, the pipe nozzle needs to be preheated first, and the main method is to use methane, acetylene and other combustible gases to bake the pipe nozzle to achieve the purpose of heating. This method has the following disadvantages: 1. The temperature is not uniform, and the welding cannot meet the technical requirements. 2. Affected by the construction environment, the heat loss is large, and multiple baking is required to realize the welding of the nozzle. 3. The construction site is seriously polluted. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned prior art, and provide a heating device capable of making the nozzle of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/08B29C35/10B29C65/00B29L23/00
CPCB29C35/0805B29C35/10B29C66/0242B29L2023/00B29C2035/0816
Inventor 刘忠诚樊志红
Owner BEIJING ZHONGKUN JIADA TECH
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