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Welding heater

A heater and mixer technology, which is applied in the field of heating devices for preheating and heat preservation or post-weld heat treatment, can solve the problems of inability to meet rapid ignition, affect product welding quality, and high requirements for brackets, and achieve fast ignition speed and combustion. Process stability and high combustion efficiency

Active Publication Date: 2015-05-20
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) The mixed combustion gas pipeline has an arc-shaped structure, and the arc-shaped structure is an arc along the direction of the mixed gas intake, that is, the centerline of the arc-shaped structure along the length direction is parallel to or coincides with the direction of the mixed gas intake , when the mixed gas enters the arc-shaped mixed combustion gas pipeline through the pipeline, it passes through a split flow, and then transports along the width direction of the arc-shaped structure. If it is not timely, the speed of starting the fire is slow, which cannot meet the needs of rapid fire starting; moreover, the stability of the device itself is poor, and the requirements for the bracket will be high, top-heavy, and a little carelessness during operation will be extremely serious. The earth affects the quality of product welding

Method used

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Effect test

Embodiment 1

[0033] One of the specific implementations of a welding heater of the present application, see figure 2 and Figure 5 As shown, its structure includes a mixed gas inlet pipe, an annular fire ring 5 and several burner assemblies, and the annular fire ring 5 is connected to the mixed gas inlet pipe and communicated with the mixed gas inlet pipe , the center line of the annular fire ring 5 along the length direction is perpendicular to the air intake direction of the mixed gas intake pipe, and the annular fire ring 5 is provided with the plurality of nozzles along the annular fire ring 5 The component corresponds to the mixed gas vent hole, and the burner assembly is arranged in the mixed gas vent hole.

[0034] Compressed air and gas enter the mixed gas intake pipe side by side for mixing, and then enter the annular fire ring 5 for diversion, then ignite above the burner 10, adjust the flow of the two gases and adjust the size of the flame to start preheating, heat preservatio...

Embodiment 2

[0043] The second embodiment of a welding heater of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment shall be explained in embodiment 1, and shall not be repeated here to repeat. The difference between this embodiment and embodiment 1 is that, see figure 2 and Figure 5 As shown, the annular fire ring 5 can be an oblong annular fire ring 5, the length and width of the oblong annular fire ring 5 are determined according to the thickness of the structure to be heated, generally speaking, the length is about 500mm to 800mm, the width is 2 to 3 times the thickness of the heated structure. Since the positions of the four corners of the oblong annular fire ring 5 are arc-shaped transitions, the mixture gas inside is smoothly transitioned without affecting the flow rate of the mixture gas, so that the combustion is stable.

[0044] see Figure 7 As shown, the annular fir...

Embodiment 3

[0047] The third specific embodiment of a welding heater of the present application, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment shall adopt the explanation in embodiment 1, and shall not be repeated here to repeat. The difference between this embodiment and embodiment 1 is that, see Figure 6 As shown, the annular fire ring 5 is a single annular fire ring 5 or an annular fire ring 5 with an 8-shaped structure composed of two annular fire rings 5 ​​. In a technical solution, the mixed gas inlet pipes can be set in two groups, which are respectively located on the left and right sides of a single annular fire ring 5 or an 8-shaped annular fire ring 5, and the mixed gas pipes on both sides are simultaneously connected to the Compressed air and gas. In another technical solution, the mixed gas intake pipes are only arranged in one group, and communicated through the connection mode of the ...

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Abstract

The invention discloses a welding heater. The welding heater structurally comprises a mixed gas intake pipeline, an annular fire ring and a plurality of spark plug assemblies, the annular fire ring is connected with the mixed gas intake pipeline and communicated with the mixed gas intake pipeline, the centerline in the length direction of the annular fire ring is perpendicular to the gas intake direction of the mixed gas intake pipeline, the annular fire ring is provided with mixed gas ventilation holes along the annular fire ring, the mixed gas ventilation holes correspond to the spark plug assemblies, and the spark plug assemblies are arranged in the mixed gas ventilation holes. By means of the welding heater, during welding preheating or heat preservation or heating, the centerline in the length direction of the annular fire ring is perpendicular to the gas intake direction of the mixed gas intake pipeline, so that mixed gas starts to be distributed to the adjacent spark plug assemblies once the mixed gas enters the annular fire ring through the mixed gas intake pipeline, the flow distance of the mixed gas is short, the fire ignition speed of the mixed gas is high, the burning efficiency of the mixed gas is high, the burning process is stable, uniform and sufficient, efficiency is improved, and cost is saved.

Description

technical field [0001] The application belongs to the technical field of welding auxiliary tools, and in particular relates to a heating device for welding preheating and heat preservation or post-weld heat treatment, which can also be used for heating when steel structures are orthopedic. Background technique [0002] In GB150 "Pressure Vessel" and other standards, when manufacturing pressure vessels with high-strength steel such as chrome-molybdenum steel or steel with a thickness of more than 30mm, the weld seam must be preheated before welding the equipment, and heat preservation must be carried out during the welding process. Afterwards, heat treatment for stress relief is often required, so preheating and heat preservation, as well as heat treatment after welding, are a very important link. [0003] At present, the preheating and heat preservation gases commonly used in China include gas, natural gas, and acetylene gas. Due to the high price of gas and natural gas, ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/40F23D14/46F23D14/62
CPCF23D14/40F23D14/46F23D14/62
Inventor 黄培林陈孙艺李小军杨世博柯建军向周锋林银善
Owner THE CHALLENGE PETROCHEM MACHINERY CORP
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