CN220456842U - Positive and negative electrode switching device of collecting ring of hydraulic generator - Google Patents
Positive and negative electrode switching device of collecting ring of hydraulic generator Download PDFInfo
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- CN220456842U CN220456842U CN202322200504.5U CN202322200504U CN220456842U CN 220456842 U CN220456842 U CN 220456842U CN 202322200504 U CN202322200504 U CN 202322200504U CN 220456842 U CN220456842 U CN 220456842U
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- side copper
- copper bar
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910052802 copper Inorganic materials 0.000 claims abstract description 96
- 239000010949 copper Substances 0.000 claims abstract description 96
- 230000005284 excitation Effects 0.000 claims abstract description 35
- 239000004593 Epoxy Substances 0.000 claims abstract description 16
- 230000006872 improvement Effects 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model relates to a positive and negative pole switching device of a collecting ring of a hydraulic generator, which comprises the following components: the device comprises an epoxy bottom plate, a plurality of single-pole double-throw switches, a plurality of collector ring side copper bars and a plurality of excitation switch side copper bars; the collecting ring side copper bars and the exciting switch side copper bars are arranged on the epoxy bottom plate; the single-pole double-throw switch comprises a connecting copper bar, an operating handle and a plurality of contact bases, wherein the connecting copper bar is connected with the excitation switch side copper bar, and the plurality of contact bases are respectively connected with the collector ring side copper bars. The technical scheme provided by the utility model has the advantages of simple structure, convenience for field operation and improvement of working efficiency and safety performance.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a positive and negative electrode switching device of a collecting ring of a hydraulic generator.
Background
The collecting ring of the hydro-generator is a terminal of a rotor coil, and excited direct current is transmitted to the rotor for excitation through the contact of a carbon brush and the anode and the cathode of the collecting ring. When the hydro-generator is in power generation operation, mechanical friction and electric corrosion effect exist between the carbon brush and the collecting ring, so that the surface smoothness of the collecting ring is gradually reduced, and even groove marks appear. The abrasion on the surface of the collecting ring can increase the abrasion speed of the carbon brush, so that the carbon powder accumulation conditions of the collecting ring, the brush holder, the magnetic lead, the insulating support and other parts are serious, dust generated by abrasion of the carbon brush can cause insulation reduction of the rotor, the carbon powder has to be cleaned by stopping the machine, the utilization hours of the machine set and the running reliability of the machine set are influenced, and the safe and reliable running of the machine set is influenced. The abrasion of the negative electrode of the collector ring is usually more serious than that of the positive electrode because the exciting high current flows into the collector ring surface from the positive electrode of the collector ring and flows out from the negative electrode of the collector ring, when the current flows from the negative electrode of the collector ring to the carbon brush, the negative electrode of the collector ring is equivalent to the anode, the carbon brush is equivalent to the cathode, and metal ions on the surface of the negative electrode of the collector ring are evaporated and adsorbed on the contact surface of the metal ions and the carbon brush, so that the electrolytic corrosion phenomenon is generated.
At present, the main method for solving the problem of inconsistent abrasion of the positive electrode and the negative electrode of the collecting ring is to regularly exchange the connection of the positive electrode and the negative electrode exciting cable, thereby achieving the effect of switching the positive electrode and the negative electrode of the slip ring and leading the abrasion of the positive electrode and the negative electrode of the slip ring to be uniform. There are several difficulties in operation: when part of the power station is installed with exciting cables, the replacement of the exciting cables of the positive and negative poles is finished as the exciting cables are insufficient in length allowance; the excitation cable has high hardness, and a great deal of labor is consumed for implementing the cable exchange connection; repeatedly exchanging excitation cable wiring, and damaging the components such as the cable, the carbon brush bus ring, the bolt and the like to a certain extent; the flood period has short downtime, and does not have enough time to finish the exchange of the excitation cable connection; the existing scheme is complex in operation, low in working efficiency and low in safety.
Disclosure of Invention
The utility model provides a positive and negative pole switching device of a collecting ring of a hydraulic generator, which at least solves the technical problems of complex operation, low working efficiency and low safety in the related art.
An embodiment of a first aspect of the present utility model provides a device for switching positive and negative poles of a collecting ring of a hydraulic generator, including: the device comprises an epoxy bottom plate, a plurality of single-pole double-throw switches, a plurality of collector ring side copper bars and a plurality of excitation switch side copper bars;
the collecting ring side copper bars and the exciting switch side copper bars are arranged on the epoxy bottom plate;
the single-pole double-throw switch comprises a connecting copper bar, an operating handle and a plurality of contact bases, wherein the connecting copper bar is connected with the excitation switch side copper bar, and the plurality of contact bases are respectively connected with the collector ring side copper bars.
Preferably, the operating handle is an insulating operating handle.
Preferably, the collecting ring side copper bar and the exciting switch side copper bar are made of copper bars with the thickness of 6mm and the width of 80 mm.
Preferably, the conductive part of the single-pole double-throw switch is made of copper bars with the thickness of 6mm and the width of 80 mm.
Preferably, holes are formed in the collecting ring side copper bar and the exciting switch side copper bar, and the collecting ring side copper bar and the exciting switch side copper bar are fixed on the epoxy bottom plate through copper bar fixing bolts.
Preferably, the collecting ring side copper bars and the excitation switch side copper bars are provided with cable connection bolts.
Further, the contact seat is connected with the copper bar at the side of the collecting ring through bolts.
The technical scheme provided by the embodiment of the utility model at least has the following beneficial effects:
the utility model provides a positive and negative electrode switching device of a collecting ring of a hydro-generator, which comprises the following components: the device comprises an epoxy bottom plate, a plurality of single-pole double-throw switches, a plurality of collector ring side copper bars and a plurality of excitation switch side copper bars; the collecting ring side copper bars and the exciting switch side copper bars are arranged on the epoxy bottom plate; the single-pole double-throw switch comprises a connecting copper bar, an operating handle and a plurality of contact bases, wherein the connecting copper bar is connected with the excitation switch side copper bar, and the plurality of contact bases are respectively connected with the collector ring side copper bars. The technical scheme provided by the utility model has the advantages of simple structure, convenience for field operation and improvement of working efficiency and safety performance.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a block diagram of a collector ring anode-cathode switching device of a hydraulic generator according to an embodiment of the present utility model;
reference numerals:
the device comprises an epoxy bottom plate 1, a single-pole double-throw switch 2, a collecting ring side copper bar 3, an excitation switch side copper bar 4, a connecting copper bar 2-1, an operating handle 2-2, a contact base 2-3 and a cable connection bolt 5.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The utility model provides a positive and negative electrode switching device of a collecting ring of a hydro-generator, which comprises the following components: the device comprises an epoxy bottom plate, a plurality of single-pole double-throw switches, a plurality of collector ring side copper bars and a plurality of excitation switch side copper bars; the collecting ring side copper bars and the exciting switch side copper bars are arranged on the epoxy bottom plate; the single-pole double-throw switch comprises a connecting copper bar, an operating handle and a plurality of contact bases, wherein the connecting copper bar is connected with the excitation switch side copper bar, and the plurality of contact bases are respectively connected with the collector ring side copper bars. The technical scheme provided by the utility model has the advantages of simple structure, convenience for field operation and improvement of working efficiency and safety performance.
The following describes a collector ring anode-cathode switching device of a hydraulic generator according to an embodiment of the present utility model with reference to the accompanying drawings.
Example 1
Fig. 1 is a block diagram of a device for switching positive and negative poles of a collecting ring of a hydraulic generator according to an embodiment of the present disclosure, as shown in fig. 1, where the device includes: an epoxy bottom plate 1, a plurality of single-pole double-throw switches 2, a plurality of collector ring side copper bars 3 and a plurality of excitation switch side copper bars 4;
the collecting ring side copper bars 3 and the exciting switch side copper bars 4 are arranged on the epoxy bottom plate 1;
the single-pole double-throw switch 2 comprises a connecting copper bar 2-1, an operating handle 2-2 and a plurality of contact bases 2-3, wherein the connecting copper bar 2-1 is connected with an excitation switch side copper bar 4, and the plurality of contact bases 2-3 are respectively connected with a plurality of collector ring side copper bars 3.
The number of the plurality of single pole double throw switches 2 may be 2, the number of the plurality of collector ring side copper bars 3 may be 2, and the number of the plurality of excitation switch side copper bars 4 may be 2.
It should be noted that, in order to avoid the excitation current from being shorted at the collector ring side copper bar 3 and the excitation switch side copper bar 4 of the collector ring anode-cathode switching device of the hydraulic generator, the two single-pole double-throw switches 2 cannot be switched on the same copper bar, and the two operation handles 2-2 should point to different directions.
In the embodiment of the present disclosure, the operating handle 2-2 is an insulating operating handle.
The collector ring side copper bar 3 and the excitation switch side copper bar 4 are both made of copper bars with the thickness of 6mm and the width of 80mm, and simultaneously, the conductive part of the single-pole double-throw switch 2 is made of copper bars with the thickness of 6mm and the width of 80 mm.
In the embodiment of the disclosure, holes are formed in the collecting ring side copper bar 3 and the excitation switch side copper bar 4, and the collecting ring side copper bar 3 and the excitation switch side copper bar 4 are fixed on the epoxy bottom plate 1 through copper bar fixing bolts.
The contact base 2-3 and the collector ring side copper bar 3 are connected by bolts based on the holes.
In the embodiment of the disclosure, the collecting ring side copper bar 3 and the excitation switch side copper bar 4 are respectively provided with a cable connection bolt 5.
The cable connection bolt 5 of the collecting ring side copper bar 3 is used for connecting a collecting ring cable;
and the cable connection bolt 5 of the excitation switch side copper bar 4 is used for connecting an excitation switch side cable.
The device is described in further detail based on the above device structure, as follows:
when the collector ring positive and negative pole switching device of the hydraulic generator is used, an operator holds the insulating glove by hand, holds the operating handle 2-2 after the standby group stops, cuts one group of single-pole double-throw switches 2 from the collector ring negative pole cable side to the collector ring positive pole cable side, cuts the other group of single-pole double-throw switches 2 from the collector ring positive pole cable side to the collector ring negative pole cable side, and therefore the original collector ring negative pole cable becomes the positive pole cable and the positive pole cable becomes the negative pole cable, and the effect of the collector ring positive and negative pole switching of the hydraulic generator is achieved.
Before the device for switching the positive electrode and the negative electrode of the collecting ring of the hydraulic generator is used, a machine set is required to be checked in a stop state and cannot be switched in a charged state, so that the electric accident stop and the damage of other equipment of the generator caused by the disappearance of exciting current of the generator are prevented. After the switching is finished, the two single-pole double-throw switches 2 are checked and confirmed to be respectively connected to copper bars on different sides, so that the excitation loop is prevented from being short-circuited at the copper bars. The inspection switch is closely contacted with the contact seat, so that local overheating caused by loose connection is prevented.
In summary, according to the collector ring anode-cathode switching device of the hydraulic generator provided by the embodiment, the anode-cathode switching of the collector ring can be directly realized by switching the two groups of single-pole double-throw switches, compared with the traditional method for disassembling the cable to switch the anode of the collector ring, the labor cost is saved, the operation can be completed by a single person, the switching process is expected to only need 1 minute, and the switching time can be roughly estimated to be saved by 2 hours; because the downtime of the hydroelectric generating set in the flood season is shorter, the traditional mode can not ensure that the switching work can be completed when the set needs to be started in an emergency, a certain assessment risk exists in developing the work, and the risk of the emergency starting can be completely avoided by switching by using the anode-cathode switching device of the collecting ring of the hydroelectric generating set. In addition, when the traditional mode is used for changing the wiring positions of the positive excitation cable and the negative excitation cable, the excitation cable is required to be pulled, the alignment of the excitation cable head and the bolt hole of the carbon brush bus ring is ensured, cable damage can be caused in the operation process, when the positive electrode and negative electrode switching device of the collecting ring is used for switching, the cable is not required to be pulled, and the conditions of damage to the insulation of the cable and the like are avoided.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present utility model in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present utility model.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (7)
1. A hydro-generator collector ring positive and negative pole auto-change over device, characterized in that the device includes: the device comprises an epoxy bottom plate, a plurality of single-pole double-throw switches, a plurality of collector ring side copper bars and a plurality of excitation switch side copper bars;
the collecting ring side copper bars and the exciting switch side copper bars are arranged on the epoxy bottom plate;
the single-pole double-throw switch comprises a connecting copper bar, an operating handle and a plurality of contact bases, wherein the connecting copper bar is connected with the excitation switch side copper bar, and the plurality of contact bases are respectively connected with the collector ring side copper bars.
2. The apparatus of claim 1, wherein the operating handle is an insulated operating handle.
3. The device of claim 1, wherein the collector-side copper bars and the excitation-switch-side copper bars are made of copper bars with a thickness of 6mm and a width of 80 mm.
4. The apparatus of claim 1 wherein the conductive portion of the single pole double throw switch is made from copper bars having a thickness of 6mm and a width of 80 mm.
5. The device of claim 1, wherein holes are provided in both the slip ring side copper bar and the excitation switch side copper bar for fixing the slip ring side copper bar and the excitation switch side copper bar to the epoxy base plate by copper bar fixing bolts.
6. The device of claim 1, wherein the slip ring side copper bar and the excitation switch side copper bar are each provided with a cable tie bolt.
7. The device of claim 5, wherein the contact block is bolted to the slip ring side copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322200504.5U CN220456842U (en) | 2023-08-15 | 2023-08-15 | Positive and negative electrode switching device of collecting ring of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322200504.5U CN220456842U (en) | 2023-08-15 | 2023-08-15 | Positive and negative electrode switching device of collecting ring of hydraulic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220456842U true CN220456842U (en) | 2024-02-06 |
Family
ID=89727215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322200504.5U Active CN220456842U (en) | 2023-08-15 | 2023-08-15 | Positive and negative electrode switching device of collecting ring of hydraulic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220456842U (en) |
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2023
- 2023-08-15 CN CN202322200504.5U patent/CN220456842U/en active Active
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