CN116580945A - Transformer on-load tap changer capable of preventing gear shifting breakdown - Google Patents
Transformer on-load tap changer capable of preventing gear shifting breakdown Download PDFInfo
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- CN116580945A CN116580945A CN202310671949.3A CN202310671949A CN116580945A CN 116580945 A CN116580945 A CN 116580945A CN 202310671949 A CN202310671949 A CN 202310671949A CN 116580945 A CN116580945 A CN 116580945A
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- tap changer
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- support shaft
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- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000010079 rubber tapping Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
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- 238000000034 method Methods 0.000 abstract description 16
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The invention discloses a transformer on-load tap changer capable of preventing gear shifting breakdown, and relates to the technical field of transformer equipment. The on-load tap changer for the transformer capable of preventing gear shifting breakdown comprises a tap selector and a sealing oil chamber arranged on the top surface of the tap selector, wherein a change-over switch body is arranged in the sealing oil chamber, a driving mechanism is arranged on the top surface of the inner wall of the sealing oil chamber, a connecting mechanism is arranged on the bottom surface of the driving mechanism, and an on-load detection mechanism is arranged on the bottom surface of the connecting mechanism. According to the invention, the even plate rotates in the insulating oil, so that the liquid state in the insulating oil can be driven to flow more uniformly, meanwhile, the even plate is acted by centrifugal force in the rotation process, if a part of free carbon particles and oil dirt can be accumulated on the outer side surface of the even plate, the overall weight of the even plate is increased, and at the moment, an alarm is used for alarming and prompting, so that the insulating oil in the sealed oil chamber is timely reminded to be deteriorated.
Description
Technical Field
The invention relates to the technical field of transformer equipment, in particular to a transformer on-load tap changer capable of preventing gear shifting breakdown.
Background
An on-load tap changer refers to a device that can operate in a transformer excited or loaded state to change the tap of a transformer, thereby regulating the output voltage of the transformer. The basic principle of the on-load tap-changer is that after a plurality of taps are led out from a high-voltage winding of a transformer, one tap is switched to another tap under the condition of not interrupting load current, so as to change the effective turns, namely the voltage ratio of the transformer, thereby realizing the purpose of voltage regulation.
The on-load tap changer must make a transition with a resistor during the tap change process to limit the circulating current during the transition. A resistive combined on-load tap-changer is commonly used. In actual operation, the structure of the resistance current-limiting on-load tap changer can be divided into three parts, namely a change-over switch, a tap selector and an operating mechanism. The tap selector is a part that turns on in advance the taps to be changed immediately adjacent in the tapping order and bears the continuous load. The diverter switch and tap selector, both commonly referred to as switch bodies, are typically mounted within the tank of the transformer. When the load current is switched by the switch, an arc is generated, so that the oil quality in the oil chamber is deteriorated, and once the oil quality in the oil chamber enters the transformer body, the chromatographic analysis of the oil in the transformer, namely the fault judgment in the transformer, is seriously affected.
The transformer oil is the most basic insulating material of the tapping switch, is used as an insulating and arc extinguishing medium, and has the functions of cooling, lubrication and corrosion resistance. In the tap switch, the insulating oil in the switch oil chamber is decomposed by the arc, and gas such as free carbon, hydrogen, acetylene and the like and oil dirt are separated out, and the gas is generally discharged from the insulating oil, but a part of free carbon particles and oil dirt are mixed in the insulating oil, and a part of free carbon particles and oil dirt are accumulated on the surface of an insulating member of the switch. In addition, a small amount of metal particles sputtered off after melting the contact material remain on the surface of the insulator. The build up of these deposits increases leakage current, reduces insulation resistance, and eventually causes oil to discharge along the insulation surface, damaging the switch.
The existing on-load tap-changer should pay close attention to the oil level of the tap-changer oil storage cabinet in operation, when the oil level of the transformer oil storage cabinet is abnormally increased or decreased, whether oil leaks in the oil chamber of the change-over switch should be checked, and an oil sample needs to be taken from the transformer regularly.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the on-load tap-changer of the transformer for preventing gear shifting breakdown, which solves the problems that the oil quality in an oil chamber is deteriorated and the tap-changer is failed due to the fact that the oil quality is deteriorated when the switch generates an electric arc when switching load current.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a transformer on-load tap changer that prevent shifting breakdown, includes the tapping selector and installs the sealed grease chamber at tapping selector top surface, the internally mounted of sealed grease chamber has the change over switch body, the inner wall top surface mounting of sealed grease chamber has actuating mechanism, actuating mechanism's bottom surface mounting has coupling mechanism, coupling mechanism's bottom surface mounting has on-load detection mechanism, on-load detection mechanism is used for detecting whether the insulating oil in the sealed grease chamber goes bad, coupling mechanism is used for being connected on-load detection mechanism to actuating mechanism, actuating mechanism is used for adjusting on-load detection mechanism's position thereby improves detection accuracy.
As a preferable mode of the present invention, the driving mechanism includes a fixed assembly mounted on a top end surface of an inner wall of the sealed oil chamber and a driving assembly mounted inside the fixed assembly.
As a preferable technical scheme of the invention, the fixed assembly comprises a fixed shell and a driving motor, wherein the fixed shell is arranged on the top surface of the inner wall of the sealed oil chamber, the driving motor is arranged on the top end of the inner wall of the fixed shell, and in the working process of the on-load tap-changer, the driving motor is connected into a circuit, and a driving support shaft is to be driven to rotate through the driving motor.
As a preferable technical scheme of the invention, the driving assembly comprises a connecting support shaft and a magnet ring, wherein the driving support shaft is arranged on the outer side surface of the output end of the driving motor, two connecting support shafts are arranged on the outer side surface of the driving support shaft, the magnet ring is arranged on the outer side surface of the driving support shaft, a connecting groove is formed in the bottom end surface of the fixed shell, and the connecting support shafts are driven to synchronously rotate through the driving support shafts, so that the magnet ring is driven to rotate in the fixed shell.
As a preferable technical scheme of the invention, the connecting mechanism comprises a connecting component and a limiting component, wherein the connecting component is arranged at the inner wall of the connecting groove, and the limiting component is arranged on the outer side surface of the connecting component.
As a preferred technical scheme of the invention, the connecting component comprises a movable supporting shaft and a limiting supporting shaft, wherein the top end surface of the movable supporting shaft is movably arranged at the inner wall of the connecting groove, a plurality of limiting supporting shafts are uniformly distributed on the outer side surface of the movable supporting shaft, a plurality of magnetic attraction rings are jointly arranged on the tail end surfaces of the limiting supporting shafts, the bottom end surface of a fixed shell outside the connecting groove is provided with the limiting groove, and the magnetic attraction rings are movably arranged at the inner wall of the limiting groove.
As a preferable technical scheme of the invention, the limiting component comprises an extension fulcrum and an extension connecting plate, wherein the extension fulcrum is arranged on the bottom end surface of the movable fulcrum, and a plurality of extension connecting plates are uniformly distributed on the outer side surface of the extension fulcrum.
As a preferable technical scheme of the invention, the on-load detection mechanism comprises an on-load component and a detection component, wherein the on-load component is arranged on the outer side surface of the expansion connecting plate, and the detection component is arranged on the outer side surface of the on-load component.
As a preferable technical scheme of the invention, the on-load assembly comprises a connecting spring and a uniform plate, the tail end surface of the expansion connecting plate is provided with an extension groove, the uniform plate is movably arranged at the inner wall of the extension groove, the connecting spring is arranged between one end surface of the uniform plate and the inner wall of the extension groove, and the movable supporting shaft drives the expansion connecting plate to synchronously rotate in the rotating process of the movable supporting shaft, so that the uniform plate can rotate in insulating oil, not only can drive liquid flow in the insulating oil to make the insulating oil more uniform, but also can be subjected to centrifugal force in the rotating process, and the connecting spring is stretched.
As a preferable technical scheme of the invention, the detection assembly comprises a position blocking plate and a moving contact, wherein the position blocking plate is arranged on the outer side surface of the uniform plate, the moving contact is arranged on one side surface of the position blocking plate, the fixed contact is arranged on the inner wall of the extension groove, the moving contact is movably contacted with the fixed contact, the alarm is arranged on the outer side surface of the sealed oil chamber, the centrifugal force born by the uniform plate is increased, the connecting spring is enabled to continuously stretch, the moving contact and the fixed contact are driven to be contacted with each other, the fixed contact is electrically connected to the power supply battery, the moving contact is electrically connected to the alarm, the alarm is used for alarming prompt, and timely reminding that insulating oil in the sealed oil chamber is deteriorated at the moment, timely treatment is carried out, and breakdown of the tapping switch caused by untimely maintenance is avoided.
Advantageous effects
The invention has the following beneficial effects:
(1) The transformer on-load tapping switch capable of preventing gear shifting breakdown drives the magnetic attraction ring to synchronously rotate in the limiting groove under the action of magnetic attraction force through the rotation of the undetermined driving support shaft of the driving motor, so that the driving motor is completely separated from insulating oil under the effect of ensuring stable rotation of the movable support shaft, and the working state of the driving motor is ensured to be stable.
(2) The transformer on-load tap changer that this shift breakdown is prevented to running through the even board in insulating oil internal rotation, can enough drive the liquid flow in the insulating oil for insulating oil is more even, and even board receives centrifugal force effect at the rotation in-process simultaneously, if some free carbon particle and oil scale can pile up on the outside surface of even board, leads to even board bulk weight to increase, carries out the suggestion of reporting to the police through the alarm this moment, in time reminds sealed oil chamber internal insulating oil to go bad this moment, in time handles, avoids because overhaul untimely, leads to tap changer to appear breaking down.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
FIG. 1 is a schematic view of the overall external structure of the present invention;
FIG. 2 is a schematic diagram of the overall internal structure of the present invention;
FIG. 3 is a schematic view of the external structure of the fixing housing of the present invention;
FIG. 4 is a schematic view showing the internal structure of the fixing housing of the present invention;
FIG. 5 is a schematic view of the exterior structure of the expansion joint plate of the present invention;
FIG. 6 is an enlarged schematic view of the portion A of FIG. 5 according to the present invention.
In the figure, 1, a tapping selector; 2. sealing the oil chamber; 3. a change-over switch body; 4. a fixed housing; 5. a driving motor; 6. driving the support shaft; 7. a connecting support shaft; 8. a magnet ring; 9. a connecting groove; 10. limiting the support shaft; 11. a magnetic ring; 12. a limit groove; 13. extending the support shaft; 14. an expansion connection board; 15. an extension groove; 16. a uniformity plate; 17. a connecting spring; 18. a bit blocking plate; 19. a moving contact; 20. a fixed contact; 21. an alarm; 22. a movable support shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 6, the embodiment of the present invention provides a technical solution: the utility model provides a transformer on-load tap changer that anti-gear-shifting broke down, including tapping selector 1 and install the sealed oil chamber 2 at tapping selector 1 top surface, sealed oil chamber 2's internally mounted has change over switch body 3, sealed oil chamber 2's inner wall top surface mounting has actuating mechanism, actuating mechanism's bottom surface mounting has coupling mechanism, coupling mechanism's bottom surface mounting has on-load detection mechanism, on-load detection mechanism is used for detecting whether the insulating oil in the sealed oil chamber 2 goes bad, coupling mechanism is used for being connected on-load detection mechanism to actuating mechanism, actuating mechanism is used for adjusting on-load detection mechanism's position thereby improves the detection accuracy.
Specifically, the driving mechanism comprises a fixing component and a driving component, the fixing component is arranged on the top end surface of the inner wall of the sealed oil chamber 2, and the driving component is arranged in the fixing component.
Further, the fixed assembly comprises a fixed shell 4 and a driving motor 5, the fixed shell 4 is arranged on the top surface of the inner wall of the sealed oil chamber 2, the driving motor 5 is arranged on the top of the inner wall of the fixed shell 4, and the driving motor 5 is connected into a circuit in the working process of the on-load tap-changer.
Further, the driving assembly comprises a connecting support shaft 7 and a magnet ring 8, the driving support shaft 6 is arranged on the outer side surface of the output end of the driving motor 5, the two connecting support shafts 7 are arranged on the outer side surface of the driving support shaft 6, the magnet ring 8 is arranged on the outer side surface of the driving support shaft 6, a connecting groove 9 is formed in the bottom end surface of the fixed shell 4, the driving support shaft 6 is pending to rotate through the driving motor 5, the connecting support shaft 7 is driven to synchronously rotate through the driving support shaft 6, and therefore the magnet ring 8 is driven to rotate in the fixed shell 4.
Further, the connecting mechanism comprises a connecting component and a limiting component, the connecting component is arranged at the inner wall of the connecting groove 9, and the limiting component is arranged on the outer side surface of the connecting component.
Further, the connecting component comprises a movable supporting shaft 22 and a limiting supporting shaft 10, the top surface of the movable supporting shaft 22 is movably arranged at the inner wall of the connecting groove 9, a plurality of limiting supporting shafts 10 are uniformly distributed on the outer side surface of the movable supporting shaft 22, and the tail end surfaces of the limiting supporting shafts 10 are jointly provided with a magnetic attraction ring 11, and the magnetic attraction ring 11 is driven to synchronously rotate in the limiting groove 12 under the action of magnetic attraction force due to the fact that the magnetic polarities of the corresponding surfaces of the magnetic attraction ring 8 and the magnetic attraction ring 11 are opposite;
the limiting groove 12 is formed in the bottom end surface of the fixed shell 4 outside the connecting groove 9, the magnetic attraction ring 11 is movably mounted on the inner wall of the limiting groove 12, and the driving motor 5 is completely separated from insulating oil under the effect of guaranteeing stable rotation of the movable support shaft 22, so that the working state of the driving motor 5 is stable.
Further, the limiting assembly comprises an extension support shaft 13 and extension connection plates 14, the extension support shaft 13 is arranged on the bottom end surface of the movable support shaft 22, a plurality of extension connection plates 14 are uniformly distributed on the outer side surface of the extension support shaft 13, and the extension connection plates 14 are driven to synchronously rotate in the rotation process of the movable support shaft 22, so that the uniform plate 16 rotates in insulating oil.
Further, the on-load detection mechanism includes an on-load component and a detection component, the on-load component is mounted on the outer side surface of the expansion connection board 14, and the detection component is mounted on the outer side surface of the on-load component.
Further, the on-load assembly comprises a connecting spring 17 and a uniform plate 16, the tail end surface of the expansion connecting plate 14 is provided with an extension groove 15, the uniform plate 16 is movably installed on the inner wall of the extension groove 15, the connecting spring 17 is installed between one end surface of the uniform plate 16 and the inner wall of the extension groove 15, the uniform plate 16 can drive liquid flow in insulating oil, so that the insulating oil is more uniform, meanwhile, the uniform plate 16 receives centrifugal force in the rotating process, if the insulating oil in the sealed oil chamber 2 is decomposed due to the action of an electric arc, free carbon, hydrogen, acetylene and other gases and oil scales are separated out, at the moment, a part of free carbon particles and oil scales can be accumulated on the outer side surface of the uniform plate 16, the integral weight of the uniform plate 16 is increased, and the centrifugal force of the uniform plate 16 is increased at the moment.
Further, the detection assembly comprises a bit blocking plate 18 and a moving contact 19, the bit blocking plate 18 is arranged on the outer side surface of the uniform plate 16, the moving contact 19 is arranged on one side surface of the bit blocking plate 18, a fixed contact 20 is arranged at the inner wall of the extension groove 15, the moving contact 19 is movably contacted with the fixed contact 20, an alarm 21 is arranged on the outer side surface of the sealing oil chamber 2, the connecting spring 17 is stretched continuously to drive the moving contact 19 to be contacted with the fixed contact 20, the fixed contact 20 is electrically connected to the power supply battery, the moving contact 19 is electrically connected to the alarm 21, alarm prompt is carried out through the alarm 21, the insulation oil in the sealing oil chamber 2 is timely reminded of being degenerated at the moment, the processing is timely, and breakdown of the tapping switch caused by untimely maintenance is avoided.
When the on-load tap-changer is used (in working), in the working process of the on-load tap-changer, the driving motor 5 is connected with a circuit, the driving fulcrum 6 is undetermined to rotate through the driving motor 5, and the connecting fulcrum 7 is driven to synchronously rotate through the driving fulcrum 6, so that the magnet ring 8 is driven to rotate in the fixed shell 4;
because the magnetism carried by the corresponding surfaces of the magnet ring 8 and the magnet ring 11 is opposite, the magnet ring 11 is driven to synchronously rotate in the limit groove 12 under the action of magnetic attraction force, so that the movable support shaft 22 is driven to synchronously rotate in the connecting groove 9, the driving motor 5 is completely separated from insulating oil under the effect of ensuring the stable rotation of the movable support shaft 22, and the stability of the working state of the driving motor 5 is ensured;
the movable support shaft 22 drives the expansion connecting plate 14 to synchronously rotate in the rotating process, so that the uniform plate 16 rotates in insulating oil, the liquid state in the insulating oil can be driven to flow more uniformly, meanwhile, the uniform plate 16 is acted by centrifugal force in the rotating process, so that the connecting spring 17 is stretched, and the movable contact 19 and the fixed contact 20 are not contacted with each other at the moment;
if the insulating oil in the sealed oil chamber 2 is decomposed due to the action of the electric arc, and gases such as free carbon, hydrogen and acetylene and oil dirt are separated out, at the moment, a part of free carbon particles and oil dirt can be accumulated on the outer side surface of the uniform plate 16, so that the overall weight of the uniform plate 16 is increased, at the moment, the centrifugal force born by the uniform plate 16 is increased, the connecting spring 17 is enabled to stretch continuously, the moving contact 19 and the fixed contact 20 are driven to contact each other, the fixed contact 20 is electrically connected to a power supply battery, the moving contact 19 is electrically connected to the alarm 21, the alarm prompt is carried out through the alarm 21, and the situation that the insulating oil in the sealed oil chamber 2 is deteriorated at the moment is timely reminded to be timely treated, so that breakdown of a tapping switch is avoided due to untimely maintenance is avoided.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The utility model provides a prevent transformer on-load tap changer that gear shift broke down, includes tapping selector (1) and installs sealed grease chamber (2) at tapping selector (1) top surface, its characterized in that: the automatic detection device is characterized in that a change-over switch body (3) is arranged in the sealed oil chamber (2), an alarm (21) is arranged on the outer side surface of the sealed oil chamber (2), a driving mechanism is arranged on the top surface of the inner wall of the sealed oil chamber (2), a connecting mechanism is arranged on the bottom surface of the driving mechanism, a load detection mechanism is arranged on the bottom surface of the connecting mechanism, the load detection mechanism is used for detecting whether insulating oil in the sealed oil chamber (2) is deteriorated, the connecting mechanism is used for connecting the load detection mechanism to the driving mechanism, and the driving mechanism is used for adjusting the position of the load detection mechanism so as to improve the detection accuracy.
2. The on-load tap changer of claim 1, wherein the on-load tap changer is configured to prevent a tap change breakdown, the on-load tap changer comprising: the driving mechanism comprises a fixing component and a driving component, wherein the fixing component is arranged on the top surface of the inner wall of the sealing oil chamber (2), and the driving component is arranged in the fixing component.
3. The on-load tap changer of claim 2, wherein the tap changer is configured to prevent a tap change breakdown, wherein: the fixed assembly comprises a fixed shell (4) and a driving motor (5), wherein the fixed shell (4) is arranged on the top surface of the inner wall of the sealed oil chamber (2), and the driving motor (5) is arranged on the top of the inner wall of the fixed shell (4).
4. A transformer on-load tap changer of claim 3, wherein: the driving assembly comprises a connecting support shaft (7) and a magnet ring (8), wherein the driving support shaft (6) is arranged on the outer side surface of the output end of the driving motor (5), two connecting support shafts (7) are arranged on the outer side surface of the driving support shaft (6), the magnet ring (8) is arranged on the outer side surface of the driving support shaft (6), and a connecting groove (9) is formed in the bottom end surface of the fixed shell (4).
5. The tap changer of claim 4, wherein the tap changer comprises: the connecting mechanism comprises a connecting component and a limiting component, wherein the connecting component is arranged at the inner wall of the connecting groove (9), and the limiting component is arranged on the outer side surface of the connecting component.
6. The tap changer of claim 5, wherein the tap changer comprises: the connecting assembly comprises a movable support shaft (22) and a limiting support shaft (10), wherein the top end surface of the movable support shaft (22) is movably arranged at the inner wall of a connecting groove (9), a plurality of limiting support shafts (10) are uniformly distributed on the outer side surface of the movable support shaft (22), a plurality of magnetic attraction rings (11) are jointly arranged on the tail end surfaces of the limiting support shafts (10), limiting grooves (12) are formed in the bottom end surface of a fixed shell (4) on the outer side of the connecting groove (9), and the magnetic attraction rings (11) are movably arranged at the inner wall of the limiting grooves (12).
7. The tap changer of claim 5, wherein the tap changer comprises: the limiting assembly comprises an extending support shaft (13) and an extending connecting plate (14), wherein the extending support shaft (13) is arranged on the bottom end surface of the movable support shaft (22), and a plurality of extending connecting plates (14) are uniformly distributed on the outer side surface of the extending support shaft (13).
8. The tap changer of claim 7, wherein the tap changer comprises: the on-load detection mechanism comprises an on-load component and a detection component, wherein the on-load component is arranged on the outer side surface of the expansion connecting plate (14), and the detection component is arranged on the outer side surface of the on-load component.
9. The tap changer of claim 8, wherein the tap changer is configured to prevent a tap breakdown by shifting, the tap changer comprising: the on-load assembly comprises a connecting spring (17) and a uniform plate (16), an extension groove (15) is formed in the tail end surface of the extension connecting plate (14), the uniform plate (16) is movably mounted at the inner wall of the extension groove (15), and the connecting spring (17) is mounted between one end surface of the uniform plate (16) and the inner wall of the extension groove (15).
10. The tap changer of claim 9, wherein the tap changer is configured to prevent a tap breakdown by shifting the tap changer, wherein: the detection assembly comprises a blocking plate (18) and a moving contact (19), the blocking plate (18) is arranged on the outer side surface of the uniform plate (16), the moving contact (19) is arranged on one side surface of the blocking plate (18), a fixed contact (20) is arranged on the inner wall of the extension groove (15), and the moving contact (19) is in movable contact with the fixed contact (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671949.3A CN116580945A (en) | 2023-06-08 | 2023-06-08 | Transformer on-load tap changer capable of preventing gear shifting breakdown |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310671949.3A CN116580945A (en) | 2023-06-08 | 2023-06-08 | Transformer on-load tap changer capable of preventing gear shifting breakdown |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117577466A (en) * | 2024-01-17 | 2024-02-20 | 上海交通大学 | Extra-high voltage transformer on-load tap-changer switching core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117577466A (en) * | 2024-01-17 | 2024-02-20 | 上海交通大学 | Extra-high voltage transformer on-load tap-changer switching core |
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