CN216419925U - Repairing device for isolating switch electrical contact - Google Patents
Repairing device for isolating switch electrical contact Download PDFInfo
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- CN216419925U CN216419925U CN202120682768.7U CN202120682768U CN216419925U CN 216419925 U CN216419925 U CN 216419925U CN 202120682768 U CN202120682768 U CN 202120682768U CN 216419925 U CN216419925 U CN 216419925U
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- 239000000843 powder Substances 0.000 claims abstract description 122
- 239000007921 spray Substances 0.000 claims abstract description 58
- 238000005507 spraying Methods 0.000 claims abstract description 46
- 230000008439 repair process Effects 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 description 28
- 238000000576 coating method Methods 0.000 description 28
- 238000000151 deposition Methods 0.000 description 10
- 230000008021 deposition Effects 0.000 description 9
- 230000007704 transition Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- 238000010288 cold spraying Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Abstract
The utility model discloses a repairing device for an electric contact of an isolating switch, which comprises: the device comprises a base, an operable mechanical arm, a spraying mechanism and a laser; one end of the mechanical arm is arranged on the base, and the spraying mechanism and the laser are arranged at the other end of the mechanical arm; the spraying mechanism includes: the powder box, send powder pipe, first spray tube, a plurality of second spray tubes, first intake pipe, a plurality of second intake pipe and two third intake pipes, the powder box with send all to be provided with the baffle in the powder pipe, the baffle will the powder box with send the powder pipe to separate and form two and send the powder passageway, it is a plurality of the second spray tube interval evenly surrounds the periphery of first spray tube, the diameter of the export of second spray tube is less than the diameter of the export of first spray tube. The device replenishes powder on the periphery of the powder spot in the spraying process, so that the thickness of a deposited layer is uniform and the performance is good; the spraying of two kinds of powders can be switched, the repair time is reduced, and the work efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of disconnecting switch repair, in particular to a repair device for an electric contact of a disconnecting switch.
Background
The supersonic laser deposition technology can be traced back to the WillamO' Neill topic group of Cambridge university in UK in 2008, and on the basis of the cold spraying technology, the supersonic laser deposition technology which synchronously couples laser heating and cold spraying is provided, and the principle is that high-pressure airflow is divided into two paths: one path of the mixed gas-solid two-phase flow enters a Laval nozzle for acceleration, and the sprayed particles impact the surface of a substrate synchronously heated by laser at supersonic speed to form a deposition layer. The laser heats the surface area of the substrate and preheats the spraying powder, and the laser and the spraying powder can soften the substrate and the spraying powder. Compared with other thermal spraying technologies, the supersonic laser deposition technology can greatly reduce adverse reactions such as particle oxidation and decomposition. Because of no large heat input, the coating prepared by the supersonic laser deposition technology keeps the original components, structures and properties of the material. The metal coating prepared by the supersonic laser deposition technology can be widely applied to the fields of aerospace, marine ships, rail transit, biomedical treatment, electromagnetic shielding, part repair and the like.
In a transformer substation, a high-voltage isolating switch is a very important power element, frequent use of the high-voltage isolating switch in the operation process also causes loss of an electric contact material, and phenomena of corrosion, cracks, coating falling, dust deposition, oxidation, vulcanization and the like occur in the loss process, so that the contact surface resistance (contact resistance) is too large, and the switch generates heat and causes faults. It is therefore desirable to apply a supersonic laser deposition technique to repair the surface of an electrical contact.
The surface repairing process needs to spray a layer of transition enhancement coating on the surface of the electrical contact first and then spray a layer of surface enhancement coating. In the surface repairing process, the first powder is often added for spraying the transition enhancement coating, the second powder is added for spraying the surface enhancement coating after the spraying of the transition enhancement coating is finished, and the repairing time is long; in the repairing process, the amount of powder at the periphery of the circular powder spot sprayed by the Laval nozzle is less than that at the center, the surface of the sprayed coating is uneven, and powder supplement and control over the inlet and outlet of two kinds of sprayed powder are needed in the repairing process. Therefore, the prior art has low efficiency of spray repair, and the quality of a deposited layer formed by spraying is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a repairing device for an electric contact of an isolating switch, which aims to solve the problems that the spraying repairing efficiency of the isolating switch is low and the quality of a deposited layer formed by spraying is poor in the prior art.
The embodiment of the utility model discloses the following technical scheme:
a repair device for an electrical contact of an isolating switch, comprising: the device comprises a base, an operable mechanical arm, a spraying mechanism and a laser; one end of the mechanical arm is arranged on the base, and the spraying mechanism and the laser are arranged at the other end of the mechanical arm; the spraying mechanism includes: the powder feeding device comprises a powder box, a powder feeding pipe, a first spray pipe, a plurality of second spray pipes, a first air inlet pipe, a plurality of second air inlet pipes and two third air inlet pipes, wherein the outlet of the powder box is communicated with the inlet of the powder feeding pipe, the outlet of the powder feeding pipe is communicated with the inlets of the first spray pipe and the second spray pipe, a partition plate is arranged in each of the powder box and the powder feeding pipe and divides the powder box and the powder feeding pipe into two powder feeding channels, the second spray pipes are uniformly wound on the periphery of the first spray pipe at intervals, the diameter of the outlet of each second spray pipe is smaller than that of the outlet of the first spray pipe, a first air inlet communicated with the first air inlet pipe is formed in the side wall of the first spray pipe, a second air inlet communicated with each second air inlet pipe is formed in the side wall of each second spray pipe, two third air inlets respectively communicated with the two third air inlet pipes are formed in the side wall of the powder box, the two third air inlets are respectively positioned at two sides of the clapboard.
Further: the powder feeding pipe is provided with an electromagnetic valve for opening and closing the powder feeding channel.
Further: the other end of the mechanical arm is fixedly provided with a first connecting plate.
Further: the powder feeding pipe is fixedly arranged on the first connecting plate.
Further: the first connecting plate is fixedly connected with one end of a second connecting plate, the second connecting plate is parallel to the powder feeding pipe, and the laser is connected with the other end of the second connecting plate in an angle-adjustable manner.
Further, the repair device for the disconnecting switch electrical contact further comprises: and the controller is arranged on the base and is respectively and electrically connected with the mechanical arm, the laser and the electromagnetic valve.
Further: and a position sensor is arranged at the outlet of the first spray pipe and is electrically connected with the controller.
Further: the first spray pipe and the second spray pipe are both Laval spray pipes.
Further: the outer side wall of the first spray pipe is fixedly connected with the outer side wall of the second spray pipe through a connecting piece.
The repair device for the isolating switch electrical contact, provided by the embodiment of the utility model, can be used for supplementing powder to the periphery of the powder spot in the spraying process, and the powder can be uniformly deposited on the surface to be repaired of the substrate, so that the deposited layer formed by surface repair is uniform in thickness and good in performance, and the quality of the deposited layer is improved; and this device can switch the spraying of two kinds of powders, can begin the spraying of surface enhancement coating powder immediately after the powder spraying of transition enhancement coating is accomplished, has significantly reduced the repair time, has improved work efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a first structural schematic diagram of a repairing device for an electric contact of an isolating switch according to an embodiment of the utility model;
FIG. 2 is a second structural schematic diagram of a repairing device for an electrical contact of an isolating switch according to an embodiment of the utility model;
fig. 3 is a cross-sectional view of a spray mechanism of a repair device for an electrical contact of an isolator in accordance with an embodiment of the present invention;
fig. 4 is a bottom view of the first nozzle and the second nozzle of the repairing apparatus for disconnecting switch electrical contacts according to the embodiment of the present invention;
fig. 5 is a schematic view of a powder spot formed by spraying the repairing device for the electric contact of the disconnecting switch according to the embodiment of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model discloses a repairing device for an electric contact of an isolating switch. As shown in fig. 1 to 4, the prosthetic device includes: a base 1, an operable mechanical arm 2, a spraying mechanism and a laser 3. One end of the robot arm 2 is disposed on the base 1. The spraying mechanism and the laser 3 are arranged at the other end of the mechanical arm 2. The robot arm 2 is a conventional art, and the motion of the robot arm 2 is realized by, for example, a multi-joint connection. The mechanical arm 2 adjusts the positions of the spraying mechanism and the laser 3 through actions, so that the spraying mechanism and the laser are positioned at proper heights and angles, and the positions needing to be sprayed are conveniently sprayed. The spraying mechanism is used for spraying powder on the position to be repaired of the matrix. The laser spot of the laser 3 is superposed with the powder spot to heat the substrate and the powder so as to improve the quality of the powder deposition layer.
The spraying mechanism includes: powder box 4, powder feeding pipe 5, first spray pipe 6, a plurality of second spray pipes 7, first air inlet pipe 8, a plurality of second air inlet pipes 9 and two third air inlet pipes 10. The outlet of the powder box 4 is communicated with the inlet of the powder feeding pipe 5. The outlet of the powder feeding pipe 5 is communicated with the inlets of the first spray pipe 6 and the second spray pipe 7. The powder box 4 and the powder feeding pipe 5 are both internally provided with a clapboard 11. The clapboard 11 divides the powder box 4 and the powder feeding pipe 5 into two powder feeding channels. One powder feeding channel is used for conveying transition enhancement coating powder, and the other powder feeding channel is used for conveying surface enhancement coating powder. A plurality of second nozzles 7 are evenly spaced around the periphery of the first nozzle 6. Specifically, the outer side wall of the first nozzle 6 and the outer side wall of the second nozzle 7 are fixedly connected through a connecting piece. In a particular embodiment, the number of second lances 7 is five. The diameter of the outlet of the second lance 7 is smaller than the diameter of the outlet of the first lance 6. Preferably, the first lance 6 and the second lance 7 are both laval lances. The first spray pipe 6 is positioned in the middle, and the powder spot is large; the second spray pipes 7 supplement powder to the periphery of the powder spot of the first spray pipe 6, so that the coating is more uniform and better in quality, and the formed powder spot is shown in fig. 5, wherein a large circle is the powder spot formed by spraying the first spray pipe 6, and five small circles are the powder spot formed by spraying the second spray pipe 7. The lateral wall of the first spray pipe 6 is provided with a first air inlet communicated with a first air inlet pipe 8. The side wall of each second spray pipe 7 is provided with a second air inlet communicated with each second air inlet pipe 9. The side wall of the powder box 4 is provided with two third air inlets which are respectively communicated with the two third air inlet pipes 10. The two third air inlets are respectively positioned at two sides of the partition plate 11, so that air is respectively supplied to the two powder feeding channels separated by the partition plate 11. The first air inlet pipe 8, the second air inlet pipe 9 and the third air inlet pipe 10 are used for introducing high-pressure air into the communicated structures respectively, so that the high-pressure air accelerates the powder.
During repair, the transitional enhancement coating powder is sprayed firstly, and then the surface enhancement coating powder is sprayed, and the spraying sequence can be controlled by controlling the powder adding sequence in the powder box 4. Further, the powder feeding tube 5 may be further provided with an electromagnetic valve 12 for opening and closing the powder feeding passage. The solenoid valve 12 is used to implement the following functions: (1) closing both powder feed passages simultaneously facilitates loading of two kinds of powders on both sides of the partition plate 11 of the powder container 4 in advance. (2) Only one powder feeding channel can be opened, so that the powder feeding channel for loading the transitional enhancement coating powder can be opened first, the transitional enhancement coating powder is sprayed first, then the powder feeding channel for loading the surface enhancement coating powder is opened, and then the surface enhancement coating powder is sprayed.
Specifically, the other end of the robot arm 2 is fixedly provided with (e.g., bolted) a first connecting plate 13. The powder feeding pipe 5 is fixedly arranged on the first connecting plate 13. The first connecting plate 13 is also fixedly connected to one end of the second connecting plate 14. The second connecting plate 14 is parallel to the powder feeding pipe 5. The laser 3 is connected to the other end of the second connecting plate 14 in an angle-adjustable manner. Specifically, the laser 3 may be mounted on a laser mount, the laser mount may be connected to the other end of the second connecting plate 14 through a bolt, the laser mount may rotate around the bolt, so that the angle of the laser 3 may be adjusted, and a nut may be sleeved on the bolt, so that the angle of the laser 3 may be locked by tightening the nut after the laser 3 rotates to a proper angle. When the laser device is used, the angle of the laser device 3 is adjusted firstly, so that laser spots can cover powder spots, the powder and the surface to be repaired of the matrix are heated, and the deposition efficiency and quality are improved. After the angle is adjusted, the angle of the laser 3 can be locked by tightening the nut.
Preferably, the prosthetic device further comprises: a controller 15 mounted on the base to increase the degree of automation of the apparatus. Specifically, the controller 15 is electrically connected to the robot arm 2, the laser 3, and the solenoid valve 12, respectively, and can control the operation of the robot arm 2, the opening, closing, and power of the laser 3, and the opening and closing of the solenoid valve 12.
Furthermore, a position sensor may be provided at the outlet of the first nozzle 6. The position sensor is electrically connected to the controller 15. The position sensor can detect the outlet angle of the first spray pipe 6 and the distance from the position to be sprayed of the substrate, and send the information to the controller 15, so that the controller 15 can control the mechanical arm action in real time, so that the first spray pipe 6 can maintain the position state, and meanwhile, the second spray pipe 7 can also maintain the position state.
The use process of the repair device is as follows:
two kinds of powder are placed on two sides of a partition plate 11 of a powder box 4, the angle of a laser 3 is adjusted to enable laser spots to coincide with powder spots sprayed by a spraying mechanism, and a controller 15 controls an adjusting mechanical arm 2 to enable the spraying mechanism and the laser 3 to be at a proper angle and height relative to the surface to be sprayed. The controller controls the laser 3 to emit laser at a specific power to the surface to be repaired, and heats the surface to be repaired. High-pressure gas enters corresponding structures from the first gas inlet pipe 8, the second gas inlet pipe 9 and the third gas inlet pipe 10 respectively. The controller 15 controls the electromagnetic valve 12 to open the powder feeding passage loaded with the transition enhancement coating powder, so that the transition enhancement coating powder is accelerated and sprayed out of the spraying mechanism under the action of high-pressure gas. After the spraying of the transition enhancement coating is finished, the controller 15 controls the electromagnetic valve 12 to open the powder feeding channel loaded with the surface enhancement coating powder, so that the surface enhancement coating powder is accelerated and sprayed out of the spraying mechanism under the action of high-pressure gas, and the spraying of the surface enhancement coating is finished. In the spraying process, the second spray pipe 7 replenishes powder on the periphery of the powder spot of the first spray pipe 6, and the laser heats the sprayed powder.
In summary, the repair device for the isolating switch electrical contact in the embodiment of the utility model can supplement powder to the periphery of the powder spot in the spraying process, and the powder can be uniformly deposited on the surface to be repaired of the substrate, so that the deposited layer formed by surface repair has uniform thickness and good performance, and the quality of the deposited layer is improved; and this device can switch the spraying of two kinds of powders, can begin the spraying of surface enhancement coating powder immediately after the powder spraying of transition enhancement coating is accomplished, has significantly reduced the repair time, has improved work efficiency.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A repair device for an electrical contact of an isolating switch, comprising: the device comprises a base, an operable mechanical arm, a spraying mechanism and a laser; one end of the mechanical arm is arranged on the base, and the spraying mechanism and the laser are arranged at the other end of the mechanical arm;
the spraying mechanism includes: the powder feeding device comprises a powder box, a powder feeding pipe, a first spray pipe, a plurality of second spray pipes, a first air inlet pipe, a plurality of second air inlet pipes and two third air inlet pipes, wherein the outlet of the powder box is communicated with the inlet of the powder feeding pipe, the outlet of the powder feeding pipe is communicated with the inlets of the first spray pipe and the second spray pipe, a partition plate is arranged in each of the powder box and the powder feeding pipe and divides the powder box and the powder feeding pipe into two powder feeding channels, the second spray pipes are uniformly wound on the periphery of the first spray pipe at intervals, the diameter of the outlet of each second spray pipe is smaller than that of the outlet of the first spray pipe, a first air inlet communicated with the first air inlet pipe is formed in the side wall of the first spray pipe, a second air inlet communicated with each second air inlet pipe is formed in the side wall of each second spray pipe, two third air inlets respectively communicated with the two third air inlet pipes are formed in the side wall of the powder box, the two third air inlets are respectively positioned at two sides of the clapboard.
2. A repair device for an electrical disconnector contact according to claim 1, characterized in that: the powder feeding pipe is provided with an electromagnetic valve for opening and closing the powder feeding channel.
3. A repair device for an electrical disconnector contact according to claim 1, characterized in that: the other end of the mechanical arm is fixedly provided with a first connecting plate.
4. A repair device for an electrical disconnector contact according to claim 3, characterized in that: the powder feeding pipe is fixedly arranged on the first connecting plate.
5. A repair device for an electrical disconnector contact according to claim 3, characterized in that: the first connecting plate is fixedly connected with one end of a second connecting plate, the second connecting plate is parallel to the powder feeding pipe, and the laser is connected with the other end of the second connecting plate in an angle-adjustable manner.
6. The repair device for an electrical disconnector contact according to claim 2, further comprising: and the controller is arranged on the base and is respectively and electrically connected with the mechanical arm, the laser and the electromagnetic valve.
7. A repair device for an electrical disconnector contact according to claim 6, characterized in that: and a position sensor is arranged at the outlet of the first spray pipe and is electrically connected with the controller.
8. A repair device for an electrical disconnector contact according to claim 1, characterized in that: the first spray pipe and the second spray pipe are both Laval spray pipes.
9. A repair device for an electrical disconnector contact according to claim 1, characterized in that: the outer side wall of the first spray pipe is fixedly connected with the outer side wall of the second spray pipe through a connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120682768.7U CN216419925U (en) | 2021-04-02 | 2021-04-02 | Repairing device for isolating switch electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120682768.7U CN216419925U (en) | 2021-04-02 | 2021-04-02 | Repairing device for isolating switch electrical contact |
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| Publication Number | Publication Date |
|---|---|
| CN216419925U true CN216419925U (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120682768.7U Active CN216419925U (en) | 2021-04-02 | 2021-04-02 | Repairing device for isolating switch electrical contact |
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| CN (1) | CN216419925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414042A (en) * | 2021-04-02 | 2021-09-21 | 国网宁夏电力有限公司检修公司 | Repairing device for isolating switch electrical contact |
-
2021
- 2021-04-02 CN CN202120682768.7U patent/CN216419925U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414042A (en) * | 2021-04-02 | 2021-09-21 | 国网宁夏电力有限公司检修公司 | Repairing device for isolating switch electrical contact |
| CN113414042B (en) * | 2021-04-02 | 2024-08-09 | 国网宁夏电力有限公司检修公司 | Repairing device for isolating electrical contact |
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