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Vacuum brazing method of gas burner of combustion chamber of gas turbine

A technology of gas nozzle and brazing method, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of affecting the production cycle and quality of gas turbines, poor welding quality, large welding deformation, etc., to reduce the probability of repair, welding The effect of good quality and easy weld formation

Active Publication Date: 2012-08-29
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor welding quality, large welding deformation and influence on the production cycle and quality of gas turbines in welding gas nozzles in the prior art, and to provide a vacuum brazing method for gas nozzles in combustion chambers of gas turbines

Method used

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  • Vacuum brazing method of gas burner of combustion chamber of gas turbine
  • Vacuum brazing method of gas burner of combustion chamber of gas turbine
  • Vacuum brazing method of gas burner of combustion chamber of gas turbine

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Experimental program
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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the concrete steps of a kind of gas turbine combustor gas nozzle vacuum brazing method of this embodiment are:

[0015] Step 1. Clean the surfaces of the components of the gas nozzle to be welded, the workbench and the surface of the tooling;

[0016] Step 2, one-time assembly and welding: assemble and spot-weld some parts cleaned in step 1, first assemble the spout 9-2 and the bellows 9-1 and spot-weld to form the extruder 9; then assemble the second pressing part 8 Spot welding with the cup-shaped part 7 to form a cup-shaped assembly A; then assembling the cyclone 3 and the cone 1 and spot-welding and assembling the cyclone 3 and the ring sleeve 5 and spot-welding to form the cyclone assembly B; The extruder 9, the cup assembly A and the cyclone assembly B all ensure that the assembly gap is less than 0.10mm during the assembly process;

[0017] Step 3, one-time coating of br...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the brazing filler metal in step three is BNi73CrSiB-40Ni-S brazing filler metal. With such setting, the performance is reliable and meets the actual needs. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the solder in step 6 is BNi73CrSiB-40Ni-S solder. With such setting, the performance is reliable and meets the actual needs. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a vacuum brazing method of a gas burner of a combustion chamber of a gas turbine, which relates to a welding method of a gas burner, in particular to a vacuum brazing method of a gas burner of a combustion chamber of a gas turbine, and solves the problems that the welding quality is poor, the welding deformation is big, and the production period and the quality of the gas turbine are affected when the prior art is adopted for welding the gas burner. The method comprises the following main steps: firstly, cleaning all surfaces, operating platforms and jig surfaces of parts of a nozzle to be welded, secondly, performing primary welding, thirdly, performing primary brazing filler metal coating, fourthly, performing primary brazing, fifthly, performing secondary welding, sixthly, performing secondary brazing filler metal coating, and seventhly, performing secondary brazing. The method is used for welding the gas burner of the combustion chamber of the gas turbine.

Description

technical field [0001] The invention relates to a welding method of a gas nozzle, in particular to a vacuum brazing method of a gas nozzle of a combustion chamber of a gas turbine. Background technique [0002] The structure of the gas nozzle in the combustion chamber is complex, connected by welding of multiple parts, the manufacturing process is complicated, the precision and coaxiality of the parts are high, and the production is difficult. According to the original design requirements, the welding seam is welded by argon arc welding. , needs to be grooved, the groove width is large, the welding quality is poor, it is difficult to control the welding deformation, the weld seam is difficult to clean, and often needs machining to ensure the size after welding, and there are problems such as difficulty in clamping and positioning, which cannot meet the design requirements. Therefore, the welding of gas nozzles in the combustion chamber has always been a key process in the ma...

Claims

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Application Information

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IPC IPC(8): B23K1/008
Inventor 杨浩张秋鸿姚青文王凯贾耘峰郑志峰石玉文沈阳威付强刘少勇苏志成王德彪季常赢柳薇
Owner HARBIN TURBINE
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