CN209836305U - Electric field application device for blade - Google Patents
Electric field application device for blade Download PDFInfo
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- CN209836305U CN209836305U CN201920144417.3U CN201920144417U CN209836305U CN 209836305 U CN209836305 U CN 209836305U CN 201920144417 U CN201920144417 U CN 201920144417U CN 209836305 U CN209836305 U CN 209836305U
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- copper sheet
- blade
- electrode
- chuck
- power line
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Abstract
An electric field applying device for a blade comprises a four-jaw chuck, the blade and an electrode clamp; clamping the blade by a four-jaw chuck; the electrode clamp comprises an electrode chuck and a power line connector lug at a four-jaw chuck, wherein the electrode chuck and the power line connector lug at the four-jaw chuck are respectively connected with a positive electrode and a negative electrode of a power supply to form a stable electric field, the power line connector lug is fastened on the four-jaw chuck through a stud, the electrode chuck is clamped at a blade tip through a fastening stud, an upper support and a lower support on the electrode chuck are both in an L shape, the long sides and the short sides of the upper support and the lower support are perpendicular to each other, the end parts of the short sides of the upper support and the short sides of the lower support are hinged to each other to form a C-shaped frame, the upper support (the long sides of the upper support and the lower support are fastened through fastening studs, the lower support is in threaded engagement with the fastening studs, the studs of the.
Description
Technical Field
The utility model relates to an electric field applying device for steam turbine blade field
Background
The turbine blade is a vital part in a power plant, the operating environment of the blade is severe, the temperature and the airflow speed of the airflow at the air inlet side are high, the linear speed can reach supersonic speed, and the blade fails under the action of factors such as cavitation erosion or fatigue due to high-temperature and high-pressure steam flow. The manufacturing cost of the blade is high, and if the blade can be repaired and remanufactured after failure, a large amount of social resources can be saved. At present, main repairing means comprise brazing, thermal spraying, laser cladding and the like, and the laser cladding has the advantages of high precision, good performance and the like and is widely applied to blade repairing. However, the conventional laser cladding technology is easy to have problems such as cracks, and the quality and the service performance of a cladding layer are affected. And the magnetic field and the electric field are adopted to assist the laser cladding process at the same time, so that the molten pool fluid movement, the internal particle distribution and the cladding defects in the laser remanufacturing process can be effectively regulated, the remarkable shape control effect is achieved, the defects of air holes, impurities, cracks and the like are effectively reduced, and the excellent performance is obtained. However, the application of the electric field in the electromagnetic field is difficult due to the blade repairing process at present, so that the application of the technology in practical generation is limited.
An electromagnetic composite field collaborative laser remanufacturing device for a turbine blade, which is filed by Wang Liang et al, Zhejiang industry university, and has the patent application number of 201710048752.9. The method comprises a laser system, a powder feeder, a magnetic field generating device, an electrode clamp and the like, but the electrode clamp is not specially designed for the complex shape of the blade, the clamp is not firm in clamping, the contact area is small, the contact resistance is large, the heating is serious, and the practical use environment is limited.
The utility model provides a method and a device for applying electric field for blade, which aims at solving the problem existing in the application of the electric field. The method adopts a four-jaw chuck to clamp the blade, and the positive electrode and the negative electrode of a power supply are respectively clamped on the jaw disk and the blade tip. The electrode at the blade tip adopts a U-shaped clamp, and is clamped by threads to improve the clamping force. The fixture is internally provided with bifurcated copper sheets, and the elasticity of the copper sheets and the two bifurcated copper sheets are utilized to improve the contact area and reduce the contact resistance. A gap is reserved between the two sheets in the copper sheet lamination area, so that the moving range of the copper sheet in the pressing process is provided, and the copper sheet is enabled to be more attached to the surface of the blade. The electrode at the claw disk is directly linked into the claw disk threaded hole through a bolt, so that the aim of forming a stable electric field in the blade is fulfilled.
Disclosure of Invention
The utility model discloses overcome prior art's above-mentioned technical problem, provide an electric field applying device for blade, form the lorentz force through electric field and ready-made magnetic field coupling that will apply to molten bath fluid motion, inside particle distribution and cladding defect in the regulation and control laser refabrication process play apparent accuse shape controllability effect, effectively reduce defects such as gas pocket, impurity, crackle, obtain good performance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to an electric field application device for blade, its characterized in that: comprises a four-jaw chuck 2, a blade 3 and an electrode clamp; the four-jaw chuck 2 is a common blade jaw disk and is used for clamping the blade 3; the electrode clamp consists of an electrode chuck 4 and a power line connector lug 1 at the four-jaw chuck 2, and the electrode chuck 4 and the power line connector lug 1 at the four-jaw chuck 2 are respectively connected with the positive electrode and the negative electrode of a power supply to form a stable electric field;
the power line connector lug 1 is fastened on the four-jaw chuck 2 through a stud, and the electrode chuck 4 at the blade tip is clamped at the blade tip through a fastening stud 404;
the electrode clamp 4 comprises a copper sheet baffle 401, a clip-shaped copper sheet 402, an upper bracket 403, a fastening stud 404, a pin 405, a bolt 406, a power line terminal 407 and a lower bracket 408; the upper bracket 403 and the lower bracket 408 are both in an L shape with the long sides and the short sides perpendicular to each other, the ends of the short sides of the two brackets are hinged with each other through a pin (405), and a C-shaped frame is formed by splicing; the long sides of the upper bracket 403 and the lower bracket 408 are fastened and connected through a fastening stud 404, the lower bracket 408 is engaged with a screw of the fastening stud 404 through threads, the stud of the fastening stud 404 can relatively slidably penetrate through the long strip-shaped through groove in the upper bracket 403, and the diameter of the head of the fastening stud 404 is larger than the width of the long strip-shaped through groove in the upper bracket 403; the clip-shaped copper sheet 402 is a thin copper sheet that can elastically deform; the inside of the C-shaped frame is defined as the inner side, the rectangular copper sheet 402 is attached to the inner sides of the upper bracket 403 and the lower bracket 408, the rectangular copper sheet 402 is connected with a power line at the end of the short side through a connecting terminal 407 and a bolt 406, the rectangular copper sheet 402 is rolled up at the end of the long side, the rolled-up part 4021 of the end of the rectangular copper sheet 402 on the bracket 403 and the lower bracket 408 is arranged oppositely to form a clamping opening for clamping the blade 3, the clamping surface of the rectangular copper sheet 402 is provided with a long groove, and a gap is reserved between the rolled-up part 4022 of the end and the rectangular copper sheet 402.
The rectangular copper sheet 402 is a thin copper sheet with the thickness of 0.1 mm-5 mm, and the elasticity of the thin copper sheet is utilized to increase the contact area when the chuck is clamped, so that the contact resistance is reduced. Meanwhile, the copper sheets at the contact parts are cut into two pieces, so that the curved surface appearance of the blade is better attached, and the contact area is further increased. In addition, a gap is reserved between the two sheets in the copper sheet lamination area, so that the moving range of the copper sheet in the pressing process is provided, and the rectangular copper sheet 402 is more attached to the surface of the blade. The power line and the clip-shaped copper sheet 402 are connected by a bolt 406 through a terminal 407.
The utility model has the following advantages:
(1) according to the method, the current direction consistency in the blade can be good due to the clamping position of the electrode, so that the laser processing effect is stable.
(2) By adopting the U-shaped electrode clamp and the specially designed copper sheet, the contact area between the electrode clamp and the blade can be increased, so that the contact resistance is reduced, and the heating is reduced.
(3) The electrode chuck and the clamping method of the method have small structural interference and small use limitation.
Drawings
Figure 1 the utility model discloses an overall assembly schematic diagram
Fig. 2 is a schematic view of the structure of the electrode holder of the present invention
FIG. 3 is a schematic view of the copper sheet structure of the present invention
In the above figures: 1-power line connector lug; 2-a four-jaw chuck; 3-a blade; 4-an electrode chuck; 401-copper sheet baffle; 402-clip copper sheet; 403-upper support; 404-fastening studs; 405-a pin; 406-a bolt; 407-power line terminal; 408-lower support
Detailed description of the invention
The description is further described below in conjunction with the appended drawings.
The method for using the device of the utility model comprises the following steps:
(1) polishing, cleaning and drying the root part of the blade, cleaning and drying the blade tip, and polishing, cleaning and drying the contact part of the electrode clamp;
(2) clamping the blade 3 on the four-jaw chuck 2;
(3) respectively clamping a power line connector lug 1 and an electrode chuck 4 at a threaded hole and a blade tip of a four-jaw chuck, screwing a fastening stud 404 to clamp a clamp, and connecting the clamp to the positive electrode and the negative electrode of a power supply;
(4) turning on a power supply to perform processing work;
the utility model discloses an electric field applying device for a blade, which comprises a four-jaw chuck 2, a blade 3 and an electrode clamp; the four-jaw chuck 2 is a common blade jaw disk and is used for clamping the blade 3; the electrode clamp consists of an electrode chuck 4 and a power line connector lug 1 at the four-jaw chuck 2, and the electrode chuck 4 and the power line connector lug 1 at the four-jaw chuck 2 are respectively connected with the positive electrode and the negative electrode of a power supply to form a stable electric field;
the power line connector lug 1 is fastened on the four-jaw chuck 2 through a stud, and the electrode chuck 4 at the blade tip is clamped at the blade tip through a fastening stud 404;
the electrode clamp 4 comprises a copper sheet baffle 401, a clip-shaped copper sheet 402, an upper bracket 403, a fastening stud 404, a pin 405, a bolt 406, a power line terminal 407 and a lower bracket 408; the upper bracket 403 and the lower bracket 408 are both in an L shape with the long sides and the short sides perpendicular to each other, the ends of the short sides of the two brackets are hinged with each other through a pin (405), and a C-shaped frame is formed by splicing; the long sides of the upper bracket 403 and the lower bracket 408 are fastened and connected through a fastening stud 404, the lower bracket 408 is engaged with a screw of the fastening stud 404 through threads, the stud of the fastening stud 404 can relatively slidably penetrate through the long strip-shaped through groove in the upper bracket 403, and the diameter of the head of the fastening stud 404 is larger than the width of the long strip-shaped through groove in the upper bracket 403; the clip-shaped copper sheet 402 is a thin copper sheet that can elastically deform; the inside of the C-shaped frame is defined as the inner side, the rectangular copper sheet 402 is attached to the inner sides of the upper bracket 403 and the lower bracket 408, the rectangular copper sheet 402 is connected with a power line at the end of the short side through a connecting terminal 407 and a bolt 406, the rectangular copper sheet 402 is rolled up at the end of the long side, the rolled-up part 4021 of the end of the rectangular copper sheet 402 on the bracket 403 and the lower bracket 408 is arranged oppositely to form a clamping opening for clamping the blade 3, the clamping surface of the rectangular copper sheet 402 is provided with a long groove, and a gap is reserved between the rolled-up part 4022 of the end and the rectangular copper sheet 402.
The clamping surface of the rectangular copper sheet 402 is provided with an elongated slot for better fitting the curved surface appearance of the blade 3, and the contact area is further increased. In addition, a gap is left between the end rolling part return section 4022 and the clip-shaped copper sheet 402, so that the movable range of the clip-shaped copper sheet 402 in the pressing process is provided, and the clip-shaped copper sheet 402 is more attached to the surface of the blade.
In the embodiment, the blade is preprocessed and then clamped on a four-jaw chuck, and a power wire connector lug is connected to the four-jaw chuck through threads. And clamping the electrode chuck at the blade tip, clamping the electrode chuck at the position of the blade tip close to the air inlet edge, screwing the fastening stud until clamping the blade, and connecting a power line with the electrode chuck through a power line wiring terminal. And when the power supply is switched on, a stable and stable electric field can be formed on the air inlet edge of the blade.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments but rather the scope of the invention is intended to include equivalent technical means as would be understood by those skilled in the art based on the inventive concept.
Claims (1)
1. An electric field application device for blade which characterized in that: comprises a four-jaw chuck (2), a blade (3) and an electrode clamp; the four-jaw chuck (2) clamps the blade (3); the electrode clamp consists of an electrode chuck (4) and a power line connector lug (1) at the four-jaw chuck (2), and the electrode chuck (4) and the power line connector lug (1) at the four-jaw chuck (2) are respectively connected with the positive electrode and the negative electrode of a power supply to form a stable electric field;
the power line connector lug (1) is fastened on the four-jaw chuck (2) through a stud, and the electrode chuck (4) is clamped at the blade tip through a fastening stud (404);
the electrode clamp (4) comprises a copper sheet baffle (401), a clip copper sheet (402), an upper bracket (403), a fastening stud (404), a pin (405), a bolt (406), a power line connecting terminal (407) and a lower bracket (408); the upper bracket (403) and the lower bracket (408) are both in an L shape with the long sides and the short sides perpendicular to each other, the ends of the short sides of the upper bracket and the lower bracket are hinged with each other through a pin (405), and a C-shaped frame is formed by splicing; the long sides of the upper support (403) and the lower support (408) are fixedly connected through a fastening stud (404), the lower support (408) is meshed with a screw rod of the fastening stud (404) through threads, a stud of the fastening stud (404) can relatively slidably penetrate through a long strip-shaped through groove in the upper support (403), and the diameter of the head of the fastening stud (404) is larger than the width of the long strip-shaped through groove in the upper support (403);
the rectangular copper sheet (402) is a thin copper sheet which can be elastically deformed; the inner side of the C-shaped frame is defined as the inner side, the rectangular copper sheet (402) is attached to the inner sides of the upper support (403) and the lower support (408), the rectangular copper sheet (402) is connected with a power line at the end part of the short side through a wiring terminal (407) and a bolt (406), the rectangular copper sheet (402) is rolled up at the end part of the long side, the end rolling parts (4021) of the rectangular copper sheet (402) on the support (403) and the lower support (408) are oppositely arranged to form a clamping opening for clamping the blade (3), the clamping surface of the rectangular copper sheet (402) is provided with a long groove, and a gap is reserved between the end rolling part rolling-back section (4022) and the rectangular copper sheet (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920144417.3U CN209836305U (en) | 2019-01-28 | 2019-01-28 | Electric field application device for blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920144417.3U CN209836305U (en) | 2019-01-28 | 2019-01-28 | Electric field application device for blade |
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| Publication Number | Publication Date |
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| CN209836305U true CN209836305U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920144417.3U Active CN209836305U (en) | 2019-01-28 | 2019-01-28 | Electric field application device for blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628925A (en) * | 2019-01-28 | 2019-04-16 | 浙江工业大学 | A kind of blade electric field applying method and device |
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2019
- 2019-01-28 CN CN201920144417.3U patent/CN209836305U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628925A (en) * | 2019-01-28 | 2019-04-16 | 浙江工业大学 | A kind of blade electric field applying method and device |
| CN109628925B (en) * | 2019-01-28 | 2024-02-23 | 浙江工业大学 | Electric field application method and device for blade |
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