CN215588224U - Special device for welding and clamping stator collector ring of large hydroelectric generator - Google Patents
Special device for welding and clamping stator collector ring of large hydroelectric generator Download PDFInfo
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- CN215588224U CN215588224U CN202121175015.3U CN202121175015U CN215588224U CN 215588224 U CN215588224 U CN 215588224U CN 202121175015 U CN202121175015 U CN 202121175015U CN 215588224 U CN215588224 U CN 215588224U
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Abstract
A special device for welding and clamping a stator collector ring of a large hydroelectric generator comprises a clamp clip, an adjusting rod and a retaining ring, wherein one jaw of the clamp clip is connected with a first retaining ring, the other jaw of the clamp clip is welded and fixed with the adjusting rod, the adjusting rod is provided with a sliding rod, one end of the sliding rod is slidably connected with the adjusting rod, and the other end of the sliding rod is connected with a second retaining ring; the utility model can lead the bus ring joint to be always kept in close contact in the welding process through the special clamping mechanism, has convenient operation and strong applicability, can greatly improve the working efficiency of the welding work of the stator bus ring, and improves the welding quality.
Description
Technical Field
The utility model belongs to the technical field of power station maintenance equipment, and particularly relates to a special device for welding and clamping a stator collecting ring of a large hydroelectric generator.
Background
Along with the continuous increase of the single machine capacity of a hydropower station, the structure and the arrangement mode of a generator stator collecting ring also have various forms, wherein the most common form is a hollow copper ring with an insulating layer, and each section of copper ring is formed into a circular ring by adopting a medium-frequency induction welding mode; the collector ring is used as an important overcurrent element of a stator winding of the generator, the current carried by the collector ring is usually very large, and especially when electric power system equipment (including an outlet bus, a transformer and a high-voltage transmission system) connected with the generator fails or insulation faults occur inside the generator to generate a sudden short circuit, a large impact current can occur in the stator winding and the collector ring, and the peak value of the impact current can reach dozens of times of rated current; therefore, if the welding quality at the joint of the bus ring is in a problem, the bus ring can be burnt out due to heating during overcurrent, and the safe and stable operation of the generator is seriously influenced.
In the current state of the art, slip rings are typically butt welded during field installation and require as little or no gap in the joint as possible to ensure weld quality. Adopt this type of mode welding collector ring to need carry out the butt joint, the butt joint usually adopts two copper pipes to carry out the natural butt joint, and the frictional force that recycles the natural butt joint production presss from both sides the silver-colored soldering lug of copper pipe joint department tightly, adopts this type of mode to have following defect:
1. the pressing force generated when the copper pipes are naturally butted is very small, so that the requirement on the proficiency of operators is high, and the operators are easy to have welding defects such as joint dislocation, overlarge gap and the like in the welding process;
2. the required welding flux is too much during butt welding, the welding heating time is too long, the welding flux needs to be heated repeatedly and filled sometimes, the copper ring insulation is damaged easily during welding, and the final welding quality is influenced.
Disclosure of Invention
In view of the technical problems in the background art, the special device for welding and clamping the bus ring of the stator of the large hydroelectric generator can ensure that the joint of the bus ring is always kept in close contact in the welding process through a special clamping mechanism, and has convenient operation and strong applicability. The work efficiency of stator collector ring welding work can be greatly improved, and the welding quality is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme to realize:
the special device for welding and clamping the bus ring of the stator of the large hydroelectric generator comprises a clamp, an adjusting rod and a retaining ring, wherein one jaw of the clamp is connected with a first retaining ring, the other jaw of the clamp is welded and fixed with the adjusting rod, a sliding rod is arranged on the adjusting rod, one end of the sliding rod is connected with the adjusting rod in a sliding mode, and the other end of the sliding rod is connected with a second retaining ring.
In the preferred scheme, the adjusting rod is uniformly provided with limiting holes, the adjusting rod penetrates through the middle of the sliding rod and enables the sliding rod to slide on the adjusting rod, the limiting bolt penetrates through the sliding rod and then is in threaded connection with the limiting holes, and the adjusting rod and the sliding rod are fixed in position through the limiting holes and the limiting bolts.
In a preferable scheme, the first retaining ring is connected with the jaw of the clamp, and the second retaining ring is connected with the sliding rod through movable bolts.
In the preferred scheme, the first retaining ring and the second retaining ring are formed by two semicircular retaining rings, the collector ring copper pipe is clamped in the first retaining ring and the second retaining ring respectively during working, and the retaining rings are connected with each other through fixing bolts and the distance between the retaining rings is adjusted.
This patent can reach following beneficial effect:
1. the device can clamp the joints of the collector ring mutually when the stator collector ring is welded through the specially-made pincerlike clamp and the special retaining ring. In addition, the device is convenient to operate, the butt clamping and welding work of the confluence ring joint can be finished by only one person, so that the human resources are saved, and the overall working efficiency of the welding work is improved;
2. the distance between the two fasteners can be adjusted by adjusting the connecting position between the sliding rod and the adjusting rod during field operation, so that the flexibility of the device is greatly improved; the device is suitable for welding stator confluence ring joints with various pipe diameters by adjusting the distance between the semicircular snap rings on the snap rings.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a plan view of the overall appearance structure of the present invention;
FIG. 3 is a schematic view of the mounting structure of the present invention;
fig. 4 is a plan view of the mounting structure of the present invention.
In the figure: the clamp comprises a clamp 1, an adjusting rod 2, a limiting hole 3, a sliding rod 4, a limiting bolt 5, a first retaining ring 6, a second retaining ring 7, a fixing bolt 8, a movable bolt 9 and a collecting ring copper pipe 10.
Detailed Description
As shown in fig. 1 and 2, the special device for welding and clamping the bus ring of the stator of the large hydroelectric generator comprises a pincer-shaped clamp 1, an adjusting rod 2 and retaining rings, wherein one jaw of the pincer-shaped clamp 1 is connected with a first retaining ring 6, the other jaw of the pincer-shaped clamp 1 is welded and fixed with the adjusting rod 2, opening and closing of the two jaws of the pincer-shaped clamp 1 can be controlled by dialing a handle of the pincer-shaped clamp 1, so as to fix the distance between the adjusting rod 2 and the first retaining ring 6, a sliding rod 4 is arranged on the adjusting rod 2, one end of the sliding rod 4 is slidably connected with the adjusting rod 2, the other end of the sliding rod 4 is connected with a second retaining ring 7, and the distance between the second retaining ring 7 and the first retaining ring 6 can be further adjusted by adjusting the position of the sliding rod 4 on the adjusting rod 2, so that the flexibility of the device is improved.
The preferable scheme is as shown in fig. 1 and fig. 2, the adjusting rod 2 is uniformly provided with limiting holes 3, the diameter of each limiting hole 3 is generally 12mm, the pitch of the limiting holes 3 is generally 30mm, the adjusting rod 2 penetrates through the middle of the sliding rod 4, the sliding rod 4 can slide on the adjusting rod 2, when the sliding rod 4 slides to the corresponding limiting hole 3 on the adjusting rod 2 and is adjusted to a certain distance, the limiting bolt 5 penetrates through the sliding rod 4 and then is in threaded connection with the limiting holes 3, and the positions of the adjusting rod 2 and the sliding rod 4 can be fixed through the limiting holes 3 and the limiting bolts 5.
The first snap ring 6 is connected with the jaw of the pincer clamp 1, the second snap ring 7 is connected with the sliding rod 4 through the movable bolts 9, the first snap ring 6 and the second snap ring 7 can be replaced conveniently through the design, and the first snap ring 6 and the second snap ring 7 can be replaced by other fixing pieces to be used for welding other devices.
The preferable scheme is as shown in fig. 3 and 4, the first snap ring 6 and the second snap ring 7 are formed by two semicircular snap rings, the bus ring copper pipe 10 is respectively clamped in the first snap ring 6 and the second snap ring 7 during operation, the clamping force generated by the clamp 1 acts on the first snap ring 6 and the second snap ring 7 and is transmitted to the bus ring copper pipe 10, so that a bus ring joint always keeps a certain pressure in the butt welding process, the welding materials are kept in close contact, and the welding quality is improved.
The clamping rings are connected with each other through a fixing bolt 8, the hoop diameters of the first clamping ring 6 and the second clamping ring 7 can be adjusted by loosening or fastening the fixing bolt 8, and the device is suitable for welding stator bus ring joints with various pipe diameters.
The working principle of the whole device is as follows:
1. according to the position of the on-site confluence ring joint, the position of the sliding rod 4 on the adjusting rod 2 is adjusted, and after the adjustment is finished, the limiting bolt 5 is screwed to fix the position;
2. the first retaining ring 6 and the second retaining ring 7 are respectively used for hooping two bus ring joints to be welded, and the bus ring joints are always kept at certain pressure in the butt welding process through the clamping force generated by the clamp 1;
3. welding personnel welds the collector ring joint, need not to press from both sides tight adjustment to the collector ring joint again among the welding process, and welding personnel alone can accomplish stator collector ring joint and press from both sides tightly and welding operation, and work efficiency is higher and welding quality is good.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (4)
1. The utility model provides a tight isolated plant of large-scale hydroelectric generator stator collecting ring welding clamp, includes pincers clamp (1), adjusts pole (2) and buckle, its characterized in that: one of the jaws of the pliers-shaped clamp (1) is connected with the first retaining ring (6), the other jaw of the pliers-shaped clamp (1) is welded and fixed with the adjusting rod (2), a sliding rod (4) is arranged on the adjusting rod (2), one end of the sliding rod (4) is connected with the adjusting rod (2) in a sliding mode, and the other end of the sliding rod (4) is connected with the second retaining ring (7).
2. The special welding and clamping device for the stator bus ring of the large hydroelectric generator according to claim 1, wherein: spacing hole (3) have evenly been seted up on adjusting pole (2), adjust pole (2) and run through and make slide bar (4) slide on adjusting pole (2) from the middle part of slide bar (4), spacing bolt (5) run through behind slide bar (4) with spacing hole (3) threaded connection, adjust the position between pole (2) and slide bar (4) through spacing hole (3) and spacing bolt (5) fixed each other.
3. The special welding and clamping device for the stator bus ring of the large hydroelectric generator according to claim 1, wherein: the first retaining ring (6) is connected with the jaw of the clamp (1), and the second retaining ring (7) is connected with the sliding rod (4) through a movable bolt (9).
4. The special welding and clamping device for the stator bus ring of the large hydroelectric generator according to claim 1, wherein: the first retaining ring (6) and the second retaining ring (7) are formed by two semicircular retaining rings, the collector ring copper pipe (10) is respectively clamped in the first retaining ring (6) and the second retaining ring (7) during working, and the retaining rings are mutually connected through a fixing bolt (8) and the distance between the retaining rings is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175015.3U CN215588224U (en) | 2021-05-28 | 2021-05-28 | Special device for welding and clamping stator collector ring of large hydroelectric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175015.3U CN215588224U (en) | 2021-05-28 | 2021-05-28 | Special device for welding and clamping stator collector ring of large hydroelectric generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215588224U true CN215588224U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121175015.3U Active CN215588224U (en) | 2021-05-28 | 2021-05-28 | Special device for welding and clamping stator collector ring of large hydroelectric generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215588224U (en) |
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2021
- 2021-05-28 CN CN202121175015.3U patent/CN215588224U/en active Active
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