CN113967820B - Repairing method for transition section assembly with impact cooling sleeve - Google Patents
Repairing method for transition section assembly with impact cooling sleeve Download PDFInfo
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- CN113967820B CN113967820B CN202111366715.5A CN202111366715A CN113967820B CN 113967820 B CN113967820 B CN 113967820B CN 202111366715 A CN202111366715 A CN 202111366715A CN 113967820 B CN113967820 B CN 113967820B
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- welding
- transition section
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- repair
- wheel
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- 230000007704 transition Effects 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 230000008439 repair process Effects 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000035515 penetration Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000011179 visual inspection Methods 0.000 claims abstract description 8
- 239000010953 base metal Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012300 argon atmosphere Substances 0.000 claims description 6
- 229910001063 inconels 617 Inorganic materials 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a repairing method of a transition section assembly with an impact cooling sleeve, which comprises the steps of firstly decomposing a damaged transition section assembly; detecting the wall thickness of the wheel and the transition section body, and then forming a repair scheme; then welding and repairing the wall thickness over-thin areas of the wheel and the transition section body; then, carrying out visual inspection on the welded joint areas of the wheel and the transition section body after welding; step five, reserving necessary welding gaps in combination with the thickness state of the base metal, performing pre-welding cleaning, reassembling parts on the single welding detection tool, positioning and fixing by spot welding, and step six, removing the transition section assembly from the single welding detection tool, and assembling and welding; step seven, performing visual inspection before stress relief heat treatment, and then performing stress relief heat treatment; and (5) performing penetration detection, and returning to the normal repair process flow after the penetration detection is qualified. The method can repair the transition section assembly seriously damaged after high-temperature operation, has the condition of re-operation after repair, and prolongs the service life of the part.
Description
Technical Field
The invention relates to a repairing method of a transition section assembly with an impact cooling sleeve, and belongs to the field of repairing of transition section assemblies.
Background
The transition section component is one of main high-temperature components of the gas turbine, and has the function of guiding high-temperature gas into the turbine component to do work, and relates to various indexes such as unit performance, emission and the like. Because the transition section is in the highest operating temperature area, damage to the transition section during operation can cause irreversible consequences of the unit, and high requirements are put on the repairing process of the transition section due to double consideration of safety and reliability. In the past repair technology, the assembled state is adopted for fixed-point targeted repair, the repair is performed according to the detection result, the material after the high-temperature operation is degraded, the rework rate is high, and the whole replacement is implemented when the severe damage is found in the local area, so that the repair mode is time-consuming and consumable, and the cost is extremely high, therefore, a reasonable and efficient repair technology is needed to shorten the repair time of the transition section and reduce the operation and maintenance cost of the unit.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a repairing method for a transition section assembly with an impact cooling sleeve, which can repair the transition section assembly with the impact cooling sleeve, which is seriously damaged after operation, has the condition of re-operation after repair, prolongs the service life of parts and reduces the operation and maintenance cost of a unit.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a repairing method of a transition section assembly with an impact cooling sleeve comprises the following steps:
after the penetration detection, decomposing a damaged transition section assembly into parts such as a wheel, a transition section body, a T-shaped block, an outlet frame and the like by utilizing a cutting and polishing device;
detecting the wall thickness of the wheel and the transition section body by adopting a wall thickness detection device, synchronously detecting the shape and position dimensions of each sub-component by adopting a shape and position tool, a caliper and scanning equipment, and combining the penetration detection result to give a detection report and form a repair scheme;
thirdly, welding and repairing the wall thickness over-thin areas of the wheels and the transition section body under the protection of argon atmosphere, controlling heat input, and performing necessary polishing and cleaning after welding;
step four, carrying out visual inspection on the welded joint area of the wheel and the transition section body after welding, and carrying out roundness repair by adopting a hydraulic calibration tool;
step five, reserving necessary welding gaps in combination with the thickness state of the base metal, performing pre-welding cleaning, reassembling parts such as a wheel, a transition section body, a T-shaped block, an outlet frame and the like on a single welding detection tool, positioning and fixing by spot welding, and adopting a matching detection tool to confirm that the overall assembly structure meets the requirements;
step six, taking down the transition section assembly from the single welding detection tool, carrying out argon arc welding assembly welding operation under the protection of argon atmosphere, adopting a multi-layer multi-pass welding mode, paying attention to interval time cooling, and avoiding deformation;
step seven, performing visual inspection before stress relief heat treatment, and returning to perform defect removal and rechecking operation if necessary;
step eight, performing stress relief heat treatment to avoid cracks in the weld joint area due to stress concentration;
and step nine, sanding and cleaning the repaired component, performing penetration detection, and returning to the normal repair process flow after the component is qualified.
Further, in the second step, parameters of the wall thickness detection device are set: basic gain: 65-85dB, determining sound velocity according to the component structure and the base material: 5100m/s-8000m/s, compensation: 4-9dB.
Further, welding wires are adopted in the third step: 0.8-1.2mm inconel 617 or replacement welding wire; current flow: 30-60A, voltage: 8-13V, welding speed: 100-210mm/min, gas: 8-12L/min.
Furthermore, in the fourth step, the hydraulic correction method is adopted for correction, and the roundness of the corrected circle is required to be 2-8mm.
Further, welding wires are adopted in the step six: 1.6-2.4mm inconel 617 or replacement welding wire; current flow: 60-120A, voltage: 8-16V, welding speed: 120-240mm/min, gas: 10-15L/min.
Further, in the step eight, parameters of the stress relief heat treatment are set: vacuum degree is not lower than 5 x 10 < -2 > Pa, heating rate is 5-30 ℃/min, maintaining temperature is 900-1200 ℃, cooling rate is 5-30 ℃/min.
Further, in the step nine, setting the sanding parameters is performed before the penetration detection: the medium alumina corundum, the pressure of 0.2-0.8bar and the distance of 30-90mm are not sprayed for a long time.
The beneficial effects are that: the repairing method of the transition section assembly with the impact cooling sleeve device can be used for repairing the transition section assembly seriously damaged after high-temperature operation, has the condition of re-operation after repairing, prolongs the service life of the part and reduces the operation and maintenance cost of the unit.
Detailed Description
The present invention will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in this description of the invention are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention.
Example 1:
a repairing method of a transition section assembly with an impact cooling sleeve comprises the following steps:
after the penetration detection, decomposing a damaged transition section assembly into parts such as a wheel, a transition section body, a T-shaped block, an outlet frame and the like by utilizing a cutting and polishing device;
detecting the wall thickness of the wheel and the transition section body by adopting a wall thickness detection device, synchronously detecting the shape and position dimensions of each sub-component by adopting a shape and position tool, a caliper and scanning equipment, and combining the penetration detection result to give a detection report and form a repair scheme; parameter setting of the wall thickness detection device: basic gain: 75dB, determining sound velocity according to the component structure and the base material: 6000m/s, compensation: 6dB;
thirdly, welding and repairing the wall thickness over-thin areas of the wheels and the transition section body under the protection of argon atmosphere, controlling heat input, and performing necessary polishing and cleaning after welding; welding wires are adopted in the third step: 1mm inconel 617 or replacement wire; current flow: 45A, voltage: 10V, welding speed: 160mm/min, gas: 10L/min
Step four, carrying out visual inspection on the welded joint area of the wheel and the transition section body after welding, and carrying out roundness repair by adopting a hydraulic calibration tool; the correction adopts a multiple hydraulic correction method, and the roundness requirement of the correction circle is 5mm;
step five, reserving necessary welding gaps in combination with the thickness state of the base metal, performing pre-welding cleaning, reassembling parts such as a wheel, a transition section body, a T-shaped block, an outlet frame and the like on a single welding detection tool, positioning and fixing by spot welding, and adopting a matching detection tool to confirm that the overall assembly structure meets the requirements;
step six, taking down the transition section assembly from the single welding detection tool, carrying out argon arc welding assembly welding operation under the protection of argon atmosphere, adopting a multi-layer multi-pass welding mode, paying attention to interval time cooling, and avoiding deformation; welding wires are adopted in the step six: 2mm inconel 617 or replacement wire; current flow: 90A, voltage: 12V, welding speed: 180mm/min, gas: 13L/min;
step seven, performing visual inspection before stress relief heat treatment, and returning to perform defect removal and rechecking operation if necessary;
step eight, performing stress relief heat treatment to avoid cracks in the weld joint area due to stress concentration; parameter setting of stress heat treatment: vacuum degree is not lower than 5 x 10 < -2 > Pa, heating rate is 18 ℃/min, maintaining temperature is 1050 ℃, cooling rate is 18 ℃/min;
step nine, sanding and cleaning the repaired component, performing penetration detection, and returning to a normal repair process flow after the component is qualified; setting sanding parameters before penetration detection: the medium alumina corundum, the pressure of 0.5bar and the distance of 60mm, is not sprayed for a long time at fixed points.
The repairing method of the transition section assembly with the impact cooling sleeve device can be used for repairing the transition section assembly seriously damaged after high-temperature operation, has the condition of re-operation after repairing, prolongs the service life of the part and reduces the operation and maintenance cost of the unit.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (1)
1. A method of repairing a transition section assembly with an impingement cooling set, comprising the steps of:
after penetration detection, decomposing a damaged transition section assembly into wheels, a transition section body, a T-shaped block and an outlet frame component by using a cutting and polishing device;
detecting the wall thickness of the wheel and the transition section body by adopting a wall thickness detection device, synchronously detecting the shape and position dimensions of each sub-component by adopting a shape and position tool, a caliper and scanning equipment, and combining the penetration detection result to give a detection report and form a repair scheme;
thirdly, welding and repairing the wall thickness over-thin areas of the wheels and the transition section body under the protection of argon atmosphere, controlling heat input, and performing necessary polishing and cleaning after welding;
step four, carrying out visual inspection on the welded joint area of the wheel and the transition section body after welding, and carrying out roundness repair by adopting a hydraulic calibration tool;
step five, reserving necessary welding gaps in combination with the thickness state of the base metal, performing pre-welding cleaning, performing reassembly, spot welding positioning and fixing of the wheel, the transition section body, the T-shaped block and the outlet frame component on the single welding detection tool, and adopting a matching detection tool to confirm that the overall assembly structure meets the requirements;
step six, taking down the transition section assembly from the single welding detection tool, and implementing argon arc welding assembly welding operation under the protection of argon atmosphere in a multilayer multi-pass welding mode;
step seven, performing visual inspection before stress relief heat treatment, and returning to perform defect removal and rechecking operation if necessary;
step eight, performing stress relief heat treatment;
step nine, sanding and cleaning the repaired component, performing penetration detection, and returning to a normal repair process flow after the component is qualified;
and in the second step, setting parameters of the wall thickness detection device: basic gain: 65-85dB, determining sound velocity according to the component structure and the base material: 5100m/s-8000m/s, compensation: 4-9dB;
and in the third step, welding wires are adopted: 0.8-1.2mm inconel 617; current flow: 30-60A, voltage: 8-13V, welding speed: 100-210mm/min, gas: 8-12L/min;
in the fourth step, the correction is carried out by adopting a multiple hydraulic correction method, and the roundness requirement of the correction circle is 2-8mm;
welding wires are adopted in the step six: 1.6-2.4mm inconel 617; current flow: 60-120A, voltage: 8-16V, welding speed: 120-240mm/min, gas: 10-15L/min;
and (3) setting parameters of stress relief heat treatment in the step eight: vacuum degree is not lower than 5 x 10 < -2 > Pa, heating rate is 5-30 ℃/min, maintaining temperature is 900-1200 ℃, cooling rate is 5-30 ℃/min;
in the step nine, setting sanding parameters is implemented before penetration detection: alumina corundum as medium, pressure of 0.2-0.8bar and distance of 30-90mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111366715.5A CN113967820B (en) | 2021-11-18 | 2021-11-18 | Repairing method for transition section assembly with impact cooling sleeve |
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| CN202111366715.5A CN113967820B (en) | 2021-11-18 | 2021-11-18 | Repairing method for transition section assembly with impact cooling sleeve |
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| CN113967820A CN113967820A (en) | 2022-01-25 |
| CN113967820B true CN113967820B (en) | 2023-11-10 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990168A (en) * | 2005-12-26 | 2007-07-04 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine transitory section renovation technique and renovation technique thereof |
| CN102601571A (en) * | 2011-01-24 | 2012-07-25 | 株式会社东芝 | Damage-repairing method of transition piece and transition piece |
| CN108032033A (en) * | 2017-12-06 | 2018-05-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of restorative procedure of turborotor cold air hole crackle |
| CN207456325U (en) * | 2017-11-22 | 2018-06-05 | 彭州西部蓝色动力科技有限公司 | For the dimensional measurement of combustion turbine transitory section component and recovery frock |
| CN108145333A (en) * | 2017-12-12 | 2018-06-12 | 中国航发动力股份有限公司 | A kind of repair method of aviation reinforcing start casing bead crack |
| CN108326508A (en) * | 2018-01-24 | 2018-07-27 | 沈阳金研激光再制造技术开发有限公司 | A kind of cobalt base superalloy burner inner liner crackle, ablated region process method for welding and repairing |
| CN110814643A (en) * | 2019-10-12 | 2020-02-21 | 上海建工（江苏）钢结构有限公司 | Anticorrosion construction method for rigid beam steel structure of thermal power boiler |
| CN110919289A (en) * | 2019-12-27 | 2020-03-27 | 华瑞（江苏）燃机服务有限公司 | Brazing process for turbine stationary blade of gas turbine |
| CN112207394A (en) * | 2020-11-20 | 2021-01-12 | 西安热工研究院有限公司 | Argon arc welding repair method for crack damage of high-temperature part of gas turbine |
| CN112453643A (en) * | 2020-11-20 | 2021-03-09 | 西安热工研究院有限公司 | Cold metal transition welding repair method for crack damage of high-temperature component of gas turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7244320B2 (en) * | 2004-06-01 | 2007-07-17 | United Technologies Corporation | Methods for repairing gas turbine engine components |
| US20120156020A1 (en) * | 2010-12-20 | 2012-06-21 | General Electric Company | Method of repairing a transition piece of a gas turbine engine |
-
2021
- 2021-11-18 CN CN202111366715.5A patent/CN113967820B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990168A (en) * | 2005-12-26 | 2007-07-04 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine transitory section renovation technique and renovation technique thereof |
| CN102601571A (en) * | 2011-01-24 | 2012-07-25 | 株式会社东芝 | Damage-repairing method of transition piece and transition piece |
| CN207456325U (en) * | 2017-11-22 | 2018-06-05 | 彭州西部蓝色动力科技有限公司 | For the dimensional measurement of combustion turbine transitory section component and recovery frock |
| CN108032033A (en) * | 2017-12-06 | 2018-05-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of restorative procedure of turborotor cold air hole crackle |
| CN108145333A (en) * | 2017-12-12 | 2018-06-12 | 中国航发动力股份有限公司 | A kind of repair method of aviation reinforcing start casing bead crack |
| CN108326508A (en) * | 2018-01-24 | 2018-07-27 | 沈阳金研激光再制造技术开发有限公司 | A kind of cobalt base superalloy burner inner liner crackle, ablated region process method for welding and repairing |
| CN110814643A (en) * | 2019-10-12 | 2020-02-21 | 上海建工（江苏）钢结构有限公司 | Anticorrosion construction method for rigid beam steel structure of thermal power boiler |
| CN110919289A (en) * | 2019-12-27 | 2020-03-27 | 华瑞（江苏）燃机服务有限公司 | Brazing process for turbine stationary blade of gas turbine |
| CN112207394A (en) * | 2020-11-20 | 2021-01-12 | 西安热工研究院有限公司 | Argon arc welding repair method for crack damage of high-temperature part of gas turbine |
| CN112453643A (en) * | 2020-11-20 | 2021-03-09 | 西安热工研究院有限公司 | Cold metal transition welding repair method for crack damage of high-temperature component of gas turbine |
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| CN113967820A (en) | 2022-01-25 |
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