CN219767058U - Resistance welding device for generator stator bar electric joint - Google Patents
Resistance welding device for generator stator bar electric joint Download PDFInfo
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- CN219767058U CN219767058U CN202320606674.0U CN202320606674U CN219767058U CN 219767058 U CN219767058 U CN 219767058U CN 202320606674 U CN202320606674 U CN 202320606674U CN 219767058 U CN219767058 U CN 219767058U
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- welding
- control adjusting
- adjusting device
- clamping plate
- electric joint
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- 238000003466 welding Methods 0.000 title claims abstract description 78
- 230000033228 biological regulation Effects 0.000 claims description 10
- 238000005219 brazing Methods 0.000 abstract description 12
- 230000006698 induction Effects 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005476 soldering Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 210000001503 joint Anatomy 0.000 description 8
- 238000004804 winding Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model provides a generator stator bar electric joint resistance welding device, including dc-to-ac conversion welding power supply, control adjusting device, centre gripping pressure device and through-flow device, dc-to-ac conversion welding power supply is connected with the control adjusting device electricity, and dc-to-ac conversion welding power supply is used for providing the direct current for the control adjusting device, and the positive and negative pole of control adjusting device is connected with two through-flow device electricity respectively, and the control adjusting device is connected with centre gripping pressure device electricity, and centre gripping pressure device is used for the electric joint to centre gripping upper bar and lower floor bar, and centre gripping pressure device and electric joint contact position are equipped with heat-resisting insulating pad. The utility model can greatly improve the efficiency of the electric joint welder for the machine set wire rod, reduce the influence of common medium frequency induction brazing on the insulation of the wire rod, and simultaneously can not generate waste residue and harmful smoke dust in the medium frequency induction brazing, is more environment-friendly, and has economic benefit due to the fact that a silver copper soldering lug in the brazing is not used.
Description
Technical Field
The utility model belongs to the technical field of stator bar electric joint welding, and particularly relates to a resistance welding device for a generator stator bar electric joint.
Background
The common large-scale generator stator winding mostly adopts a double-layer wave winding or double-layer lap winding form, and after an upper layer of wire rod and a lower layer of wire rod are embedded in the installation process, the wire rods are electrically connected into the stator winding through an electric joint between the upper layer of wire rod and the lower layer of wire rod of a welding machine. At present, a common welding mode of the electric joints among the bars adopts medium-frequency induction brazing, namely an induction coil is used and is arranged near a butt joint welding seam of the electric joints, an electric joint copper plate generates eddy current to generate heat through an electromagnetic induction principle, and brazing material is filled in the electric joint copper plate to realize welding of the electric joints among the bars. The welding mode has the following defects: 1. the welding time is long, and a large amount of heat generated in the welding process can cause overheat influence on insulation of the wire rod near the electric joint, so that insulation is damaged; 2. after welding, because the brazing material is melted down, the bottom of the electric joint generates weld flash to be polished; 3. waste residues and toxic smoke dust can be generated in the welding process, so that excessive loss of silver solder can be caused, professional health of welding personnel can be influenced, and the welding device is extremely environment-friendly.
In view of the above drawbacks, if a resistance welding process is adopted, the procedure of polishing the weld flash can be reduced, but the current resistance welding is applied to the technical barriers in the field: the resistance welding apparatus is relatively large, typically moving the workpiece, while the resistance welding apparatus itself is stationary. It is therefore desirable to design a process suitable for resistance welding of generator stator bar electrical connectors.
Disclosure of Invention
In view of the technical problems existing in the background technology, the resistance welding device for the generator stator bar electric connector provided by the utility model can greatly improve the efficiency of a welding machine for the generator stator bar electric connector, reduce the influence of common medium frequency induction brazing on insulation of a bar, and simultaneously can not generate waste residues and harmful smoke dust in medium frequency induction brazing, is more environment-friendly, and has economic benefit due to no use of silver copper soldering lugs in brazing and welding.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a generator stator bar electric joint resistance welding device, including dc-to-ac conversion welding power supply, control adjusting device, centre gripping pressure device and through-flow device, dc-to-ac conversion welding power supply is connected with the control adjusting device electricity, and dc-to-ac conversion welding power supply is used for providing the direct current for the control adjusting device, and the positive and negative pole of control adjusting device is connected with two through-flow device electricity respectively, and the control adjusting device is connected with centre gripping pressure device electricity, and centre gripping pressure device is used for the electric joint to centre gripping upper bar and lower floor bar, and centre gripping pressure device and electric joint contact position are equipped with heat-resisting insulating pad.
In the preferred scheme, the clamping and pressurizing device comprises an electric hydraulic machine, a main clamping plate and an auxiliary clamping plate, wherein the main clamping plate and the auxiliary clamping plate are connected through the electric hydraulic machine, and the electric hydraulic machine is used for driving the main clamping plate and the auxiliary clamping plate to open and close.
In the preferred scheme, control adjusting device on be provided with pressurization button, welding button, operating condition pilot lamp, welding completion warning light and emergency stop button, pressurization button is used for controlling the electric hydraulic press and opens and stop, welding button is used for controlling the break-make of through-flow device.
In the preferred scheme, the main plate on install travel switch, travel switch is connected with control adjusting device electricity, travel switch detects the position signal of vice splint and is used for forming the linkage with welding completion warning light.
The following beneficial effects can be achieved in this patent:
according to the utility model, the electric connector butted with the stator bars of the generator set is continuously pressurized, short-time high current is applied, so that the quick welding of the electric connector is realized, meanwhile, the welding heating range is reduced, the efficiency of a welder for the electric connector of the generator set bar can be greatly improved, the influence on insulation of the bars caused by common medium frequency induction brazing is reduced, meanwhile, waste residues and harmful smoke dust in the medium frequency induction brazing can not be generated, the environment is more friendly, and the economic benefit brought by welding is realized because a silver copper welding sheet in the brazing is not used.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a diagram of a device connection of the present utility model;
FIG. 2 is a front view of the clamping and pressurizing device of the present utility model;
FIG. 3 is a top view of the clamping and pressurizing device of the present utility model;
FIG. 4 is a diagram of an operation panel of the control and adjustment device of the present utility model;
FIG. 5 is a view of the installation position of the travel switch of the present utility model;
fig. 6 is a prior art welding process layout.
In the figure: the direct current welding power supply comprises an inversion direct current welding power supply 1, a control and regulation device 2, a pressurizing button 201, a welding button 202, an operating state indicator lamp 203, a welding completion indicator lamp 204, an emergency stop button 205, a clamping pressurizing device 3, an electric hydraulic machine 301, a main clamping plate 302, an auxiliary clamping plate 303, a current passing device 4, a heat-resistant insulating pad 5, a travel switch 6, an electric connector 7, an upper-layer wire rod 8 and a lower-layer wire rod 9.
Detailed Description
The preferred scheme is as shown in fig. 1 to 2, and the generator stator bar electric joint resistance welding device comprises an inversion direct current welding power supply 1, a control and regulation device 2, a clamping and pressurizing device 3 and a through-flow device 4, and is characterized in that: the inverter direct current welding power supply 1 is electrically connected with the control and regulation device 2, the inverter direct current welding power supply 1 is used for providing direct current for the control and regulation device 2, the anode and the cathode of the control and regulation device 2 are respectively electrically connected with the two through-flow devices 4, the control and regulation device 2 is electrically connected with the clamping and pressurizing device 3, the clamping and pressurizing device 3 is used for clamping an electric joint of an upper-layer wire rod and a lower-layer wire rod, and a heat-resistant insulating pad 5 is arranged at the contact part of the clamping and pressurizing device 3 and the electric joint. Two through-flow devices 4 are provided for mounting at the electrical connections 7 of the upper bar 8 and the lower bar 9. Since high temperature is generated during the welding process, in order to ensure the insulation performance of the clamping and pressurizing device 3, the heat-resistant insulating pad 5 can be made of refractory bricks, and can bear the high temperature of more than one thousand degrees. The device can solve the problem that the existing resistance welding is not movable, the clamping pressurizing device 3 is used for clamping the electric connector 7, and when the electric connector 7 melts, the clamping pressurizing device 3 can drive the electric connector 7 to be close to each other.
Specifically, the clamping and pressurizing device 3 includes an electro-hydraulic machine 301, a main plate 302, and an auxiliary plate 303, the main plate 302 and the auxiliary plate 303 are connected by the electro-hydraulic machine 301, and the electro-hydraulic machine 301 is used for driving the main plate 302 and the auxiliary plate 303 to open and close.
The control and regulation device 2 is provided with a pressurizing button 201, a welding button 202, a working state indicator lamp 203, a welding completion indicator lamp 204 and an emergency stop button 205, wherein the pressurizing button 201 is used for controlling the starting and stopping of the electro-hydraulic machine 301, and the welding button 202 is used for controlling the on-off of the through-flow device 4. In this embodiment, the working status indicator lamp 203 is a red lamp, and the welding completion indicator lamp 204 is a green lamp. The emergency stop button 205 is a power off button.
Preferably, the main plate 302 is provided with a travel switch 6, the travel switch 6 is electrically connected with the control and adjustment device 2, and the travel switch 6 is used for forming a linkage with the welding completion indicator lamp 204 after detecting the position signal of the auxiliary plate 303. The travel switch 6 is used for detecting the maximum moving distance of the main clamping plate 302 and the auxiliary clamping plate 303, the setting of the maximum travel is judged according to field experience, when the travel switch 6 obtains a signal, the two electric connectors are proved to be fused in place, the control and adjustment device 2 receives the switching value signal of the travel switch 6, a green light is turned on, a worker cuts off a power supply, and welding is completed. In addition, the welding process time in the present embodiment may also be controlled by time.
The working process of the device is as follows:
s1: electrifying and debugging an inversion direct current welding power supply, and determining parameters such as set voltage, current, electrifying time and the like;
s2: the debugging control adjusting device ensures that the device can realize the display and control of welding power supply parameters and can operate the clamping pressurizing device and the through-flow device;
s3: the clamping and pressurizing devices are arranged on two sides of the upper and lower-layer bar electric joints, and the electric hydraulic press (or hydraulic pliers) is controlled to continuously apply pressure to the electric joints through the pressurizing buttons of the control and regulation device, so that the upper and lower-layer bar electric joints are tightly attached together; meanwhile, the end part of the hydraulic clamp is provided with a heat-resistant insulating pad, so that insulation between the clamping and pressurizing device and the electric connector is ensured;
s4: the through-flow device is arranged at two sides of the upper and lower-layer bar electric connectors, so that two electrodes in the through-flow device are reliably clung to the surfaces of the electric connectors;
s5: the other ends of the two welded wire rods are isolated by an epoxy sheet, so that current is concentrated between the two electrodes of the through-flow device and the electric connector in the process of electrifying the welding machine, and the safety of nearby operators is ensured;
s7: pressing a welding button in the control and regulation device, sending a large current by the through-flow device, generating huge heat at the gap of the electric joint within a few seconds to melt the surface of the copper plate at the welding joint (the welding joint can be controlled by time or travel), and eliminating the welding joint between the two electric joints under the continuous pressure of the clamping and pressurizing device;
s8: the through-flow device stops high current, and simultaneously the continuous pressure of the clamping and pressurizing device is maintained, after the temperature of the welding line naturally drops, the welding line is solidified to a set time, and then the clamping and pressurizing device is naturally released;
s9: and (5) controlling the adjusting device to indicate that the green light which is welded is turned on, and the welding is completed.
The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (4)
1. The utility model provides a generator stator bar electric joint resistance welding device, includes contravariant direct current welding power supply (1), control adjusting device (2), centre gripping pressurizing device (3) and through-flow device (4), its characterized in that: the direct current welding power supply (1) is electrically connected with the control adjusting device (2), the direct current welding power supply (1) is used for providing direct current for the control adjusting device (2), the positive electrode and the negative electrode of the control adjusting device (2) are respectively electrically connected with the two through-flow devices (4), the control adjusting device (2) is electrically connected with the clamping pressurizing device (3), the clamping pressurizing device (3) is used for clamping an electric joint of an upper-layer wire rod and a lower-layer wire rod, and a heat-resistant insulating pad (5) is arranged at the contact part of the clamping pressurizing device (3) and the electric joint.
2. The generator stator bar electrical connector resistance welding apparatus of claim 1 wherein: the clamping and pressurizing device (3) comprises an electro-hydraulic machine (301), a main clamping plate (302) and an auxiliary clamping plate (303), wherein the main clamping plate (302) and the auxiliary clamping plate (303) are connected through the electro-hydraulic machine (301), and the electro-hydraulic machine (301) is used for driving the main clamping plate (302) and the auxiliary clamping plate (303) to open and close.
3. The generator stator bar electrical connector resistance welding apparatus of claim 2 wherein: the control adjusting device (2) is provided with a pressurizing button (201), a welding button (202), a working state indicator lamp (203), a welding completion indicator lamp (204) and an emergency stop button (205), wherein the pressurizing button (201) is used for controlling the starting and stopping of the electro-hydraulic machine (301), and the welding button (202) is used for controlling the on-off of the through-flow device (4).
4. A generator stator bar electrical connector resistance welding apparatus as claimed in claim 3 wherein: a travel switch (6) is arranged on the main clamping plate (302), the travel switch (6) is electrically connected with the control and regulation device (2), and the travel switch (6) is used for forming linkage with the welding completion indicator lamp (204) after detecting a position signal of the auxiliary clamping plate (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320606674.0U CN219767058U (en) | 2023-03-24 | 2023-03-24 | Resistance welding device for generator stator bar electric joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320606674.0U CN219767058U (en) | 2023-03-24 | 2023-03-24 | Resistance welding device for generator stator bar electric joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219767058U true CN219767058U (en) | 2023-09-29 |
Family
ID=88136872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320606674.0U Active CN219767058U (en) | 2023-03-24 | 2023-03-24 | Resistance welding device for generator stator bar electric joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219767058U (en) |
-
2023
- 2023-03-24 CN CN202320606674.0U patent/CN219767058U/en active Active
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