CN116623170A - Repairing method for steam turbine rotor system - Google Patents
Repairing method for steam turbine rotor system Download PDFInfo
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- CN116623170A CN116623170A CN202310546589.4A CN202310546589A CN116623170A CN 116623170 A CN116623170 A CN 116623170A CN 202310546589 A CN202310546589 A CN 202310546589A CN 116623170 A CN116623170 A CN 116623170A
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- Prior art keywords
- rotor system
- laser
- head
- steam turbine
- repairing
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004372 laser cladding Methods 0.000 claims abstract description 40
- 238000003754 machining Methods 0.000 claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000003247 decreasing effect Effects 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 17
- 241001584775 Tunga penetrans Species 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000000149 argon plasma sintering Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a repairing method of a turbine rotor system, which improves the repairing quality of a turbine on the premise of not moving the turbine by changing the technology and the structure on the basis of the additive manufacturing technology. After the rotor system is subjected to laser cladding repair, a secondary machining repair of a repair area is required to be realized by an independent machining head, a material increasing and decreasing manufacturing laser machining device is switched to the machining head, the machining head is utilized to carry out secondary machining repair on the repaired rotor, the machining head rotates according to a motor of the machining head, a function of milling the rotor system is realized, and the material increasing and decreasing manufacturing laser machining device realizes omnibearing repair of the rotor system according to the working state of the rotor system.
Description
Technical Field
The invention belongs to the technical field of steam turbine rotors, and particularly relates to a steam turbine rotor system repairing method, in particular to a steam turbine rotor system repairing method based on an increase-decrease material manufacturing technology.
Background
The rotor system of the steam turbine is complex, and the steam turbine is broken or unbalanced due to the working conditions of water hammer and the like in the steam turbine in a high-temperature environment and needs to be repaired. If the steam turbine cannot be effectively repaired, abnormal vibration and even shutdown of the steam turbine rotor system can be caused, and the repair degree of the steam turbine rotor system directly determines the working state of the steam turbine. However, the turbine rotor system is large and complex in structure, and if the turbine rotor system is removed for restoration, a large amount of manpower waste is caused for installation, and great resource waste is caused. Meanwhile, the whole dynamic balance of the rotor system is not guaranteed, so that the working efficiency of the steam turbine is reduced.
Because the steam turbine is complex in structure and high in installation difficulty, the steam turbine cannot leave a station to repair as much as possible, and therefore, the repair quality of the steam turbine is improved by the repair method of the steam turbine rotor system on the premise that the steam turbine is not moved.
Disclosure of Invention
The invention provides a method for repairing a steam turbine rotor system, which aims to solve the technical problems that: on the premise of not moving the steam turbine, the repair quality of the steam turbine is improved.
In order to solve the technical problems, the invention provides a method for repairing a steam turbine rotor system, which is characterized by comprising the following steps: a mechanical arm 1, a guide rail slideway 2, an additive manufacturing laser processing device 6 and an electric jigger 7 are adopted; the turbine rotor system 3 is fixed on the turbine base 5 and is supported by the sliding bearing 4; the method comprises the following specific steps:
the guide rail slideway 2 is arranged on one side of the steam turbine rotor system 3, the manipulator 1 is matched with the guide rail slideway 2, and the manipulator 1 is moved by a motor to realize movement in the x-axis direction;
the steam turbine rotor system 3 does not need to move, and an electric jigger 7 is arranged at one end of the steam turbine rotor system and is used for driving the steam turbine rotor system 3 to rotate for a designated angle;
when the rotor system 3 needs to be subjected to material adding and repairing, a laser cladding head 61 of a material adding and reducing manufacturing laser processing device 6 is matched with the manipulator 1, a powder feeding mechanism 62 at the circumferential position of the laser cladding head 61 is used for feeding cladding powder to the laser cladding head 61, a laser 63 is used for providing cladding sintering laser for the laser cladding head 61, a water chiller 64 is used for providing circulating cooling water for the laser 63 and the laser cladding head 61 as a whole, and the laser cladding head 61 is used for laser sintering powder to realize repairing of a rotor system gear;
after the rotor system is subjected to laser cladding repair, a separate machining head is required to realize secondary machining repair of a repair area, the material increasing and decreasing manufacturing laser machining device 6 is switched to a machining head 65, and the machining head 65 is utilized to carry out secondary machining repair on the repaired rotor, so that material decreasing manufacturing is realized.
The beneficial effects are that: the invention improves the repair quality of the steam turbine on the premise of not moving the steam turbine by changing the technology and the structure on the basis of the additive manufacturing technology. After the rotor system is subjected to laser cladding repair, a secondary machining repair of a repair area is required to be realized by an independent machining head, a material increasing and decreasing manufacturing laser machining device is switched to the machining head, the machining head is utilized to carry out secondary machining repair on the repaired rotor, the machining head rotates according to a motor of the machining head, a function of milling the rotor system is realized, and the material increasing and decreasing manufacturing laser machining device realizes omnibearing repair of the rotor system according to the working state of the rotor system.
Drawings
FIG. 1 is a schematic diagram of a manipulator structure;
FIG. 2 is a schematic view of the structure of a laser cladding head and a processing head;
fig. 3 shows a tool switching device
Fig. 4 is a schematic structural view of the present invention.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the specific embodiments of the present invention will be given.
The invention provides a repairing method of a turbine rotor system, which adopts a manipulator 1, a guide rail slideway 2, an additive manufacturing laser processing device 6 and an electric jigger 7; the turbine rotor system 3 is fixed on the turbine base 5 and is supported by the sliding bearing 4; the method comprises the following specific steps:
the guide rail slideway 2 is arranged on one side of the steam turbine rotor system 3, the manipulator 1 is matched with the guide rail slideway 2, and the manipulator 1 is moved by a motor to realize movement in the x-axis direction;
the steam turbine rotor system 3 does not need to move, an electric jigger 7 is arranged at one end of the steam turbine rotor system, the inside of the electric jigger 7 is connected with the steam turbine rotor system 3 by using a key slot, the inside of the electric jigger is connected by using a bevel gear, the conversion between an X axis and a Y axis is realized, and the electric jigger drives the steam turbine rotor system 3 to rotate by a designated angle by using a motor to rotate at a low speed;
when the rotor system 3 needs to be subjected to material adding and repairing, a laser cladding head 61 of a material adding and reducing manufacturing laser processing device 6 is matched with the manipulator 1, a powder feeding mechanism 62 at the circumferential position of the laser cladding head 61 is used for feeding cladding powder to the laser cladding head 61, a laser 63 is used for providing cladding sintering laser for the laser cladding head 61, a water chiller 64 is used for providing circulating cooling water for the laser 63 and the laser cladding head 61 as a whole, and the laser cladding head 61 is used for laser sintering powder to realize repairing of a rotor system gear;
after the rotor system is subjected to laser cladding repair, a secondary machining repair of a repair area is required to be realized by an independent machining head, the material increasing and decreasing manufacturing laser machining device 6 is switched to a machining head 65, the machining head 65 is utilized to carry out secondary machining repair on the repaired rotor, the machining head 65 rotates according to a motor of the machining head 65, the milling function of the rotor system is realized, and the material increasing and decreasing manufacturing laser machining device 6 realizes omnibearing repair of the rotor system 3 according to the working state of the rotor system.
The manipulator 1 realizes six-degree-of-freedom motion and mainly comprises a first shaft 11, a second shaft 12, a third shaft 13, a fourth shaft 14, a fifth shaft 15 and a sixth shaft 16, wherein the first shaft 11 is arranged on a manipulator base, and can realize the rotation of the manipulator 1 around the Z-axis direction. Six shafts 16 are arranged at the end parts of the five shafts 15, and the six shafts 16 control the movement of the laser cladding head 61;
the material increasing and decreasing manufacturing laser processing device 6 mainly comprises a laser cladding head 61, a powder feeding mechanism 62, a laser 63, a water chiller 64 and a processing head 65; the manipulator 1 is matched with the laser cladding head 61 or the processing head 65 according to the requirement; the powder feeding mechanism 62 at the circumferential position of the laser cladding head 61 is used for conveying cladding powder to the laser cladding head 61, the laser 63 is used for providing cladding sintering laser for the laser cladding head 61, the water chiller 64 is used for integrally providing circulating cooling water for the laser 63 and the laser cladding head 61, and the laser cladding head 61 is used for laser sintering powder to repair the rotor system gear. The processing head is used for carrying out secondary processing and finishing on the repaired rotor, and the processing head 65 realizes the milling function of the rotor system according to the rotation of the motor.
Still be equipped with cutter auto-change over device 8, provide the cutter for the processing head, including cutter 81, detection sensor 82 and place support 83, cutter auto-change over device 8 can switch multiple cutter, and the cutter is whole to be placed on placing support 83, will detect the sensor 82 and detect what kind of cutter when processing head 65 takes or places cutter 81, can accurately confirm corresponding cutter when processing is maintained.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (7)
1. A method for repairing a steam turbine rotor system is characterized by comprising the following steps of: a mechanical arm 1, a guide rail slideway 2, an additive manufacturing laser processing device 6 and an electric jigger 7 are adopted; the turbine rotor system 3 is fixed on the turbine base 5 and is supported by the sliding bearing 4; the method comprises the following specific steps:
the guide rail slideway 2 is arranged on one side of the steam turbine rotor system 3, the manipulator 1 is matched with the guide rail slideway 2, and the manipulator 1 is moved by a motor to realize movement in the x-axis direction;
the steam turbine rotor system 3 does not need to move, and an electric jigger 7 is arranged at one end of the steam turbine rotor system and is used for driving the steam turbine rotor system 3 to rotate for a designated angle;
when the rotor system 3 needs to be subjected to material adding and repairing, a laser cladding head 61 of a material adding and reducing manufacturing laser processing device 6 is matched with the manipulator 1, a powder feeding mechanism 62 at the circumferential position of the laser cladding head 61 is used for feeding cladding powder to the laser cladding head 61, a laser 63 is used for providing cladding sintering laser for the laser cladding head 61, a water chiller 64 is used for providing circulating cooling water for the laser 63 and the laser cladding head 61 as a whole, and the laser cladding head 61 is used for laser sintering powder to realize repairing of a rotor system gear;
after the rotor system is subjected to laser cladding repair, a separate machining head is required to realize secondary machining repair of a repair area, the material increasing and decreasing manufacturing laser machining device 6 is switched to a machining head 65, and the machining head 65 is utilized to carry out secondary machining repair on the repaired rotor, so that material decreasing manufacturing is realized.
2. A method of repairing a steam turbine rotor system according to claim 1, wherein: the inside of the electric jigger 7 is connected with the turbine rotor system 3 by using a key slot, the conversion of X and Y axes is realized by bevel gear transmission, and the turbine rotor system 3 is driven to rotate by a designated angle by using the slow rotation of a motor.
3. A method of repairing a steam turbine rotor system according to claim 1, wherein: the processing head 65 rotates according to the motor, and the function of milling the rotor system is realized.
4. A method of repairing a steam turbine rotor system according to claim 1, wherein: the material increasing and decreasing manufacturing laser processing device 6 mainly comprises a laser cladding head 61, a powder feeding mechanism 62, a laser 63, a water chiller 64 and a processing head 65; the manipulator 1 is matched with the laser cladding head 61 or the processing head 65 according to the requirement; the circumferential position of the laser cladding head 61, the powder feeding mechanism 62 feeds cladding powder to the laser cladding head 61, the laser 63 provides cladding sintering laser to the laser cladding head 61, the cold water machine 64 provides circulating cooling water for the laser 63 and the laser cladding head 61 as a whole, and the laser cladding head 61 realizes repair of the rotor system gear by laser sintering powder.
5. The method for repairing a rotor system of a steam turbine according to claim 4, wherein: the robot 1 realizes six degrees of freedom motion.
6. The method for repairing a rotor system of a steam turbine according to claim 5, wherein: the manipulator 1 comprises a first shaft 11, a second shaft 12, a three shaft 13, a four shaft 14, a five shaft 15 and a six shaft 16 which are sequentially arranged, wherein the first shaft 11 is arranged on a manipulator base and is used for realizing the rotation of the manipulator 1 around the Z-axis direction; six shafts 16 are arranged at the end parts of the five shafts 15, and the six shafts 16 control the movement of the laser cladding head 61.
7. The method for repairing a rotor system of a steam turbine according to claim 6, wherein: the tool switching device 8 for providing tools for the processing head is further provided, and comprises a tool 81, a detection sensor 82 and a placement support 83, wherein a plurality of tools are integrally placed on the placement support 83, and the detection sensor 82 is used for detecting the type of the tools taken or placed by the processing head 65.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310546589.4A CN116623170A (en) | 2023-05-16 | 2023-05-16 | Repairing method for steam turbine rotor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310546589.4A CN116623170A (en) | 2023-05-16 | 2023-05-16 | Repairing method for steam turbine rotor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116623170A true CN116623170A (en) | 2023-08-22 |
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ID=87612689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310546589.4A Pending CN116623170A (en) | 2023-05-16 | 2023-05-16 | Repairing method for steam turbine rotor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116623170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11795389B2 (en) | 2021-04-21 | 2023-10-24 | Shaanxi Lighte Optoelectronics Material Co., Ltd. | Nitrogen-containing compound, electronic component, and electronic device |
-
2023
- 2023-05-16 CN CN202310546589.4A patent/CN116623170A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11795389B2 (en) | 2021-04-21 | 2023-10-24 | Shaanxi Lighte Optoelectronics Material Co., Ltd. | Nitrogen-containing compound, electronic component, and electronic device |
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