CN213636568U - On-spot prosthetic devices of heavy current closed aluminum bus gold utensil terminal - Google Patents
On-spot prosthetic devices of heavy current closed aluminum bus gold utensil terminal Download PDFInfo
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- CN213636568U CN213636568U CN202022945337.3U CN202022945337U CN213636568U CN 213636568 U CN213636568 U CN 213636568U CN 202022945337 U CN202022945337 U CN 202022945337U CN 213636568 U CN213636568 U CN 213636568U
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Abstract
A large-current closed aluminum bus hardware terminal on-site repairing device comprises an inert gas source, a cooling device, a laser, an automatic powder feeder and a power supply, wherein the inert gas source is used for providing protective gas for a laser cladding head; the cooling device is used for cooling the laser and the laser cladding head; the laser is connected to the laser cladding head through an optical fiber and used for transmitting laser energy beams to the laser cladding head; the power supply is used for providing power for the laser, the automatic powder feeder and the three-axis movement mechanism. The utility model provides a closed bus-bar gold utensil terminal unable on-the-spot restoration, can only pass through the prosthetic problem of factory of returning of cycle length.
Description
Technical Field
The utility model belongs to seal generating line gold utensil prosthetic devices field, in particular to on-spot prosthetic devices of aluminium generating line gold utensil terminal is sealed to heavy current.
Background
The enclosed bus is a bus system composed of a shell, conductors, insulating materials and related accessories and mainly comprises a protective shielding shell, a bus conductor and a supporting insulator. The conductor and the shell are both of aluminum tube structures. The lead wire is widely used for power plants, substations, industrial and civil power supplies. The enclosed bus is generally divided into multiple sections for connecting power equipment such as generators, transformers, circuit breakers, etc. And a hardware terminal and a metal flexible connection are required to be communicated between the two sections of closed buses.
The enclosed bus conductor and the hardware terminal are usually made of conductive aluminum materials with good conductivity, light weight and low price. The contact part of the hardware fitting terminal and the metal flexible connection has higher contact resistance, and is easy to generate heat under the condition of large current, so that the equipment is damaged due to overheating. In order to improve the conductive efficiency, a silver layer is generally plated on the surface of the hardware terminal. Because the bonding strength of the silver coating is limited, and the current at the outlet of the generator is large, in a long-term high-temperature running environment, the phenomenon of local peeling can easily occur between the silver coating and the aluminum material, so that the heating of the hardware fitting terminal is continuously aggravated, the separation of the silver coating and the aluminum material is further accelerated, and the safe and stable running of the generator is seriously threatened.
The prior art can not carry out on-site repair to the closed bus hardware terminal in the power station, can only cut off the hardware terminal from the closed bus, and transport to the electroplating factory to carry out electroplating again, transport to the power station scene again, repack through the welded mode. The biggest disadvantage of this method is the time consumption. If the fault occurs in the power generation period, the electric energy cannot be transmitted to the power grid, and huge economic loss is caused.
In addition, as the silver electroplating on the surface of the aluminum material is difficult, the process quality is not easy to control, and the repaired hardware fitting terminal still has the risk of being damaged again.
Disclosure of Invention
In view of the technical problem that the background art exists, the utility model provides a field repair device of aluminium generating line gold utensil terminal is sealed to heavy current has solved the unable on-the-spot restoration of sealed generating line gold utensil terminal, can only pass through the prosthetic problem of factory of returning of cycle length.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a large-current closed aluminum bus hardware terminal on-site repairing device comprises an inert gas source, a cooling device, a laser, an automatic powder feeder and a power supply, wherein the inert gas source is used for providing protective gas for a laser cladding head; the cooling device is used for cooling the laser and the laser cladding head; the laser is connected to the laser cladding head through an optical fiber and used for transmitting laser energy beams to the laser cladding head; the power supply is used for providing power for the laser, the automatic powder feeder and the three-axis movement mechanism.
In the preferred scheme, the inert gas source is an inert gas bottle, the cooling device is a water cooling machine, the power supply is an electric control cabinet, and the inert gas bottle is connected to the laser cladding head through a protective gas pipe; the inert gas bottle is connected to the automatic powder feeder through a powder feeding gas pipe; the water cooling machine is connected to the laser through a laser cooling water pipe; the laser is connected to the laser cladding head through an optical fiber and used for transmitting laser energy beams to the laser cladding head; the water cooling machine is connected to the laser cladding head through a laser cladding head cooling water pipe; the electrical control cabinet controls the energy of the laser energy beam output by the laser and the switch through the laser control cable; the laser cladding head is arranged on the three-axis movement mechanism.
In a preferred scheme, the laser cladding head comprises a cladding nozzle, a laser cladding head focusing module and a laser cladding head collimating module; the laser cladding head collimation module is used for expanding and collimating the laser beam transmitted by the optical fiber and ensuring that the diameter of the beam is matched with the diameter of the laser cladding head focusing module; the laser cladding head focusing module is used for focusing laser beams on the surface of the hardware terminal so as to melt the local part of the hardware terminal and form a molten pool; the cladding nozzle is used for converging the metal silver powder flow in a molten pool formed after the surface of the hardware terminal workpiece is melted by the laser beam.
In a preferred scheme, the three-axis movement mechanism comprises a three-axis movement mechanism Z axis, a three-axis movement mechanism Y axis and a three-axis movement mechanism X axis; the laser cladding head is arranged on the Z axis of the three-axis movement mechanism through a laser cladding head connecting plate.
In the preferred scheme, the three-axis movement mechanism Z axis, the three-axis movement mechanism Y axis and the three-axis movement mechanism X axis form a three-dimensional coordinate system structure, and the three-axis movement mechanism Z axis, the three-axis movement mechanism Y axis and the three-axis movement mechanism X axis are respectively a linear module; the linear module comprises a servo motor, a linear guide rail, a connecting block, a sliding block and a limit switch, wherein the servo motor is used for driving the sliding block to perform linear motion on the linear guide rail.
In a preferred scheme, the electric control cabinet is connected to the three-axis movement mechanism through a control cable of the three-axis movement mechanism, and the electric control cabinet is used for providing power for the three-axis movement mechanism.
This patent can reach following beneficial effect:
1. the device adopts the laser cladding process to replace the original silver electroplating process, is green and environment-friendly, and has no environmental pollution.
2. The device adopts the laser cladding process, can repair the aluminum closed bus hardware fitting terminal on site, does not need to cut and weld the closed bus, does not need to be transported back to a closed bus manufacturer to be repaired by an electroplating process, and saves the repairing time.
3. The thickness of the silver coating prepared by the laser cladding process is larger than that of the silver electroplating process, and the bonding strength is higher, so that the service life of the hardware fitting terminal can be prolonged, and the failure rate is reduced.
4. The device is in a modularized and movable design, can be stored and transported conveniently, can be rapidly deployed to a closed bus site when on-site repair is needed, and saves maintenance time.
5. The device adopts a specially-made miniaturized laser cladding head which is of a bending structure, and the special design can ensure that the laser cladding head is inserted between the hardware fitting terminal and the closed bus shell without collision and interference.
6. The device adopts a three-axis motion mechanism, can realize high-precision spatial linear interpolation motion and circular interpolation motion, and meets the motion requirements of the hardware fitting terminal laser cladding process. And because the motion mode is simple, the bus bar is not easy to collide and interfere with the closed bus bar, the programming mode is simpler, and the field repair time can be saved.
7. The device adopts a specially-made light-weighted three-axis movement mechanism, field operators can be installed on the closed bus without assistance of a power tool, the installation is simple and convenient, and the field repair time can be saved.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a layout diagram of the present invention;
FIG. 2 is a schematic diagram of the wiring of the present invention;
FIG. 3 is a diagram of the effect of the installation of the three-axis movement mechanism of the present invention;
FIG. 4 is a three-dimensional structure diagram of the three-axis movement mechanism of the present invention;
FIG. 5 is a three-dimensional structure diagram of the linear module of the present invention;
fig. 6 is a molten pool effect diagram of the utility model.
In the figure: 1-closed bus, 2-metal terminal, 3-laser cladding head, 4-three-axis movement mechanism, 5-clamping base, 6-flexible connection mounting plate, 7-inert gas bottle, 8-water cooler, 9-laser, 10-automatic powder feeder, 11-electrical control cabinet, 12-protective gas pipe, 13-powder feeding gas pipe, 14-laser cooling water pipe, 15-laser cladding head cooling water pipe, 16-optical fiber, 17-powder feeding pipe, 18-laser control cable, 19-powder feeder control cable, 20-three-axis movement mechanism control cable, 21-closed bus shell, 22-closed bus inner cylinder, 23-cladding nozzle, 24-laser cladding head focusing module, 25-laser cladding head collimating module, 26-laser cladding head connecting plate, 27-three-axis movement mechanism Z axis, 28-three-axis movement mechanism Y axis, 29-three-axis movement mechanism X axis, 30-laser cladding layer, 31-servo motor, 32-linear guide rail, 33-connecting block, 34-sliding block and 35-limit switch.
Detailed Description
The preferred scheme is as shown in fig. 1 to 6, the on-site repair device for the large-current closed aluminum bus fitting terminal comprises an inert gas source, a cooling device, a laser 9, an automatic powder feeder 10 and a power supply, and is characterized in that: the inert gas source is used for providing protective gas for the laser cladding head 3; the cooling device is used for cooling the laser 9 and the laser cladding head 3; the laser 9 is connected to the laser cladding head 3 through an optical fiber 16, and the laser 9 is used for transmitting laser energy beams to the laser cladding head 3; the power supply is used for supplying power to the laser 9, the automatic powder feeder 10 and the three-axis movement mechanism 4.
Further, the inert gas source is an inert gas bottle 7, the cooling device is a water cooling machine 8, the power supply is an electric control cabinet 11, and the inert gas bottle 7 is connected to the laser cladding head 3 through a protective gas pipe 12; the inert gas bottle 7 is connected to the automatic powder feeder 10 through a powder feeding gas pipe 13; the water cooling machine 8 is connected to the laser 9 through a laser cooling water pipe 14; the laser 9 is connected to the laser cladding head 3 through an optical fiber 16, and the laser 9 is used for transmitting laser energy beams to the laser cladding head 3; the water cooling machine 8 is connected to the laser cladding head 3 through a laser cladding head cooling water pipe 15; the electrical control cabinet 11 controls the energy of the laser energy beam output by the laser 9 and the switch through the laser control cable 18; the laser cladding head 3 is arranged on the three-axis movement mechanism 4.
The inert gas bottle 7, the water cooling machine 8, the laser 9, the automatic powder feeder 10 and the electrical control cabinet 11 are placed on the ground below the closed bus 1, and the three-axis movement mechanism 4 is fixedly installed on the flexible connection installation plate 6 of the closed bus 1 through the clamping base 5. The laser cladding head 3 is arranged on the three-axis movement mechanism 4. The fitting terminal 2 on the closed bus bar 1 is an object to be repaired by the present apparatus.
The inert gas bottle 7 is connected to the laser cladding head 3 through the protective gas pipe 12, and provides inert protective gas to prevent oxidation during laser cladding. The inert gas bottle 7 is connected to an automatic powder feeder 10 through a powder feeding gas pipe 13, and the metal silver powder is conveyed to the laser cladding head 3 through a powder feeding pipe 17 through certain pressure. The water cooling machine 8 is connected to the laser 9 through a laser cooling water pipe 14, and provides cooling water to maintain the laser 9 to work, so that the laser 9 can continuously generate laser energy beams. The laser 9 is connected to the laser cladding head 3 through an optical fiber 16, and transmits a laser energy beam to the laser cladding head 3. The water cooling machine 8 is connected to the laser cladding head 3 through the laser cladding head cooling water pipe 15, provides cooling water, keeps the thermal balance of the laser cladding head 3 during working, and prevents the laser cladding head 3 from being damaged due to overhigh temperature. The electric control cabinet 11 controls the energy of the laser energy beam output by the laser 9 and the switch through the laser control cable 18, controls the powder conveying speed and the switch of the automatic powder feeder 10 through the powder feeder control cable 19, and controls the movement control track and speed of the three-axis movement mechanism 4 through the three-axis movement mechanism control cable 20.
Further, the laser cladding head 3 comprises a cladding nozzle 23, a laser cladding head focusing module 24 and a laser cladding head collimating module 25; the laser cladding head collimation module 25 is used for expanding and collimating the laser beam transmitted by the optical fiber 16, and ensuring that the diameter of the beam is matched with the diameter of the laser cladding head focusing module 24; the laser cladding head focusing module 24 is used for focusing a laser beam on the surface of the hardware terminal 2 so as to melt the local part of the hardware terminal 2 and form a molten pool; the cladding nozzle 23 is used for converging the metal silver powder flow in a molten pool formed after the surface of the metal fitting terminal 2 workpiece is melted by the laser beam.
Further, the three-axis movement mechanism 4 includes a three-axis movement mechanism Z-axis 27, a three-axis movement mechanism Y-axis 28, and a three-axis movement mechanism X-axis 29; the laser cladding head 3 is arranged on a Z shaft 27 of the three-shaft movement mechanism through a laser cladding head connecting plate 26.
The laser cladding head 3 is arranged on the three-axis movement mechanism 4 and can move between a closed bus shell 21 and a closed bus inner cylinder 22 on the closed bus 1 in parallel with the surface of the hardware fitting terminal 2. The angle of the laser cladding head 3 can be adjusted and changed, and when the laser cladding head 3 moves, the laser cladding head 3, the three-axis movement mechanism 4, the optical fiber 16 and the like cannot collide with any part on the closed bus 1.
The laser cladding head 3 comprises a cladding nozzle 23, a laser cladding head focusing module 24 and a laser cladding head collimating module 25. The laser cladding head collimation module 25 is used for expanding and collimating the laser beam transmitted by the optical fiber 16 and ensuring that the diameter of the beam is matched with the diameter of the laser cladding head focusing module 24. The laser cladding head focusing module 24 functions to focus a laser beam on the surface of the fitting terminal 2 to melt the fitting terminal 2 locally and form a molten pool. The cladding nozzle 23 is used for converging the metal silver powder flow in a molten pool formed after the surface of the metal fitting terminal 2 workpiece is melted by the laser beam.
Further, a three-axis movement mechanism Z-axis 27, a three-axis movement mechanism Y-axis 28 and a three-axis movement mechanism X-axis 29 form a three-dimensional coordinate system structure, and the three-axis movement mechanism Z-axis 27, the three-axis movement mechanism Y-axis 28 and the three-axis movement mechanism X-axis 29 are respectively a linear module; the linear module comprises a servo motor 31, a linear guide rail 32, a connecting block 33, a sliding block 34 and a limit switch 35, wherein the servo motor 31 is used for driving the sliding block 34 to move linearly on the linear guide rail 32.
The slide block 34 can move linearly on the linear guide 32 by driving the servo motor 31. The angle between each two shafts is 90 degrees and are connected together by a connecting block 33. The three shafts are combined together to form a motion mechanism which can move in a rectangular coordinate system.
As shown in fig. 4 and 5, the three-axis movement mechanism 4 includes a three-axis movement mechanism Z-axis 27, a three-axis movement mechanism Y-axis 28, and a three-axis movement mechanism X-axis 29, each of which is a linear module. The laser cladding head 3 is arranged on the three-axis movement mechanism 4 through a laser cladding head connecting plate 26. When the three-axis movement mechanism 4 moves, the laser cladding head 3 also moves along with the movement.
Further, the electrical control cabinet 11 is connected to the three-axis moving mechanism 4 through a three-axis moving mechanism control cable 20, and the electrical control cabinet 11 is used for supplying power to the three-axis moving mechanism 4.
The electric control cabinet 11 is connected to the three-axis movement mechanism 4 through a three-axis movement mechanism control cable 20, supplies power and controls. The electrical control cabinet 11 includes three servo drivers for driving each linear module. Comprises a motion controller which can execute a motion program and control the three-axis motion mechanism 4 to move. The three-axis movement mechanism 4 can perform linear interpolation movement and circular interpolation movement in a three-dimensional space, and the two movement modes are basic movement modes necessary for finishing cladding of the surface of the hardware terminal.
The working principle of the whole device is as follows:
when the device starts to work, the laser cladding head 3 enables laser energy beams generated by the laser 9 to be focused on the surface of the aluminum metal material of the hardware fitting terminal 2, and the aluminum metal material is melted to form a molten pool. The automatic powder feeder 10 feeds silver metal powder onto the laser cladding head 3 and sprays the silver metal powder into a molten pool to be melted, and when the laser energy beam is removed, the temperature of the molten pool is reduced, and the metal silver and the metal aluminum solution are solidified into solid together. The laser cladding head 3 scans the surface of the hardware terminal 2 under the control of the three-axis movement mechanism 4, and a cladding layer 30 is formed on the surface of the hardware terminal 2. Since the metal silver powder is mainly melted and solidified above the molten pool and less convects with the metal aluminum solution below, the main component of the cladding layer 30 is silver, which has good conductivity and can reduce the surface contact resistance of the hardware terminal 2. Because the metal silver and the metal aluminum solution are solidified into a solid together, the cladding layer 30 and the metal aluminum base material of the hardware fitting terminal 2 are metallurgically bonded, the bonding strength is stronger than that of the original electroplating process, and the shedding is not easy to occur. Compared with the original maintenance mode, the laser cladding silver process has the advantages that the construction period is about 20 percent and the cost is about 57 percent.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (6)
1. The utility model provides a large current seals on-spot prosthetic devices of aluminum bus gold utensil terminal, includes inert gas source, cooling device, laser instrument (9), automatic powder feeder (10) and power, its characterized in that: the inert gas source is used for providing protective gas for the laser cladding head (3); the cooling device is used for cooling the laser (9) and the laser cladding head (3); the laser (9) is connected to the laser cladding head (3) through an optical fiber (16), and the laser (9) is used for transmitting laser energy beams to the laser cladding head (3); the power supply is used for supplying power to the laser (9), the automatic powder feeder (10) and the three-axis movement mechanism (4).
2. The large-current closed aluminum bus fitting terminal field repairing device as claimed in claim 1, wherein: the inert gas source is an inert gas bottle (7), the cooling device is a water cooling machine (8), the power supply is an electric control cabinet (11), and the inert gas bottle (7) is connected to the laser cladding head (3) through a protective gas pipe (12); the inert gas bottle (7) is connected to the automatic powder feeder (10) through a powder feeding gas pipe (13); the water cooling machine (8) is connected to the laser (9) through a laser cooling water pipe (14); the laser (9) is connected to the laser cladding head (3) through an optical fiber (16), and the laser (9) is used for transmitting laser energy beams to the laser cladding head (3); the water cooling machine (8) is connected to the laser cladding head (3) through a laser cladding head cooling water pipe (15); the electrical control cabinet (11) controls the laser (9) to output laser energy beam energy and switch through a laser control cable (18); the laser cladding head (3) is arranged on the three-axis movement mechanism (4).
3. The large-current closed aluminum bus fitting terminal field repairing device as claimed in claim 2, wherein: the laser cladding head (3) comprises a cladding nozzle (23), a laser cladding head focusing module (24) and a laser cladding head collimating module (25); the laser cladding head collimation module (25) is used for expanding and collimating the laser beam transmitted by the optical fiber (16) and ensuring that the diameter of the beam is matched with the diameter of the laser cladding head focusing module (24); the laser cladding head focusing module (24) is used for focusing laser beams on the surface of the hardware terminal (2) so as to melt the local part of the hardware terminal (2) and form a molten pool; the cladding nozzle (23) is used for converging the metal silver powder flow in a molten pool formed after the surface of the metal fitting terminal (2) workpiece is melted by the laser beam.
4. The large-current closed aluminum bus fitting terminal on-site repairing device as claimed in claim 3, wherein: the three-axis movement mechanism (4) comprises a three-axis movement mechanism Z axis (27), a three-axis movement mechanism Y axis (28) and a three-axis movement mechanism X axis (29); the laser cladding head (3) is arranged on a Z shaft (27) of the three-shaft movement mechanism through a laser cladding head connecting plate (26).
5. The large-current closed aluminum bus fitting terminal on-site repairing device as claimed in claim 4, wherein: a three-axis movement mechanism Z axis (27), a three-axis movement mechanism Y axis (28) and a three-axis movement mechanism X axis (29) form a three-dimensional coordinate system structure, and the three-axis movement mechanism Z axis (27), the three-axis movement mechanism Y axis (28) and the three-axis movement mechanism X axis (29) are respectively a linear module; the linear module comprises a servo motor (31), a linear guide rail (32), a connecting block (33), a sliding block (34) and a limit switch (35), wherein the servo motor (31) is used for driving the sliding block (34) to move linearly on the linear guide rail (32).
6. The large-current closed aluminum bus fitting terminal field repair device according to any one of claims 1 to 5, wherein: the electrical control cabinet (11) is connected to the three-axis movement mechanism (4) through a three-axis movement mechanism control cable (20), and the electrical control cabinet (11) is used for providing power for the three-axis movement mechanism (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945337.3U CN213636568U (en) | 2020-12-10 | 2020-12-10 | On-spot prosthetic devices of heavy current closed aluminum bus gold utensil terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945337.3U CN213636568U (en) | 2020-12-10 | 2020-12-10 | On-spot prosthetic devices of heavy current closed aluminum bus gold utensil terminal |
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| CN213636568U true CN213636568U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022945337.3U Active CN213636568U (en) | 2020-12-10 | 2020-12-10 | On-spot prosthetic devices of heavy current closed aluminum bus gold utensil terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553619A (en) * | 2020-12-10 | 2021-03-26 | 中国长江电力股份有限公司 | On-site repairing device and method for large-current closed aluminum bus hardware fitting terminal |
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2020
- 2020-12-10 CN CN202022945337.3U patent/CN213636568U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553619A (en) * | 2020-12-10 | 2021-03-26 | 中国长江电力股份有限公司 | On-site repairing device and method for large-current closed aluminum bus hardware fitting terminal |
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