CN117393373A - Transmission device and intelligent vacuum circuit breaker using same - Google Patents
Transmission device and intelligent vacuum circuit breaker using same Download PDFInfo
- Publication number
- CN117393373A CN117393373A CN202311466522.6A CN202311466522A CN117393373A CN 117393373 A CN117393373 A CN 117393373A CN 202311466522 A CN202311466522 A CN 202311466522A CN 117393373 A CN117393373 A CN 117393373A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- section
- cavity
- transmission
- buffer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 72
- 239000000872 buffer Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000007853 buffer solution Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The transmission device comprises a buffer cylinder, wherein a cavity with one end open is formed in the buffer cylinder, buffer liquid is arranged in the cavity, the opening of the cavity is sealed through an end cover, one end of a transmission rod is arranged in the cavity, and the other end of the transmission rod penetrates through the end cover to extend out; the transmission rod consists of a first section of cylinder, a second section of cylinder, a third section of cylinder and four sections of cylinders which are sequentially connected; the section of cylinder is arranged in the buffer cylinder cavity and is provided with a pressure relief hole for buffer solution to pass through; the second section of cylinder passes through the end cover, and an over-travel spring is sleeved between the end cover and the third section of cylinder outside the second section of cylinder; a baffle is sleeved outside the three sections of cylinders; the four-section cylinder is provided with external threads, the fastening nut is in threaded connection with the four-section cylinder, and the position of the baffle plate is fixed. The intelligent vacuum circuit breaker comprises a vacuum arc-extinguishing chamber, a transmission supporting seat, a transmission device, an intelligent control device and a driving mechanism. The invention provides the transmission device with high reliability and high intelligent degree and the intelligent vacuum circuit breaker using the same.
Description
Technical Field
The invention relates to the technical field of high-voltage switch power transmission equipment, in particular to a transmission device and an intelligent vacuum circuit breaker using the same.
Background
The vacuum circuit breaker is named because the medium of the arc extinguishing chamber and the insulating medium of the contact gap after arc extinguishing are both high vacuum, has the advantages of small volume, light weight and the like, and is favored by power users due to the environmental protection along with the double-carbon problem faced by the international society.
The existing medium-voltage vacuum circuit breaker has low breaking difficulty, so that the breaking performance of general users is met, but with the extension of voltage class to 126kV and 252kV, the structure of the existing vacuum circuit breaker is difficult to meet the high-current breaking requirements of 50kA and 63 kA. The main factors causing the switching-on and switching-off problem comprise the aspects of arc-blowing magnetic field design, voltage-sharing shielding design, heat dissipation structure design, movement characteristics and the like, wherein the movement characteristics of the vacuum arc extinguishing chamber comprise switching-on and switching-off speed, switching-on and switching-off time, switching-on bounce, switching-off overshoot and the like. The conventional vacuum circuit breaker processes the mechanical characteristic problem of the circuit breaker by matching and designing the opening and closing spring, the over-travel spring and the opening and closing buffer force, but the effect is not ideal, the effect is influenced by the over-travel spring, and the actual contact movement state is difficult to accurately grasp.
Based on the existing intelligent driving technology, the invention designs a combined transmission system in a matching way, can effectively inhibit closing bounce, and improves the stability of the moving contact of the arc extinguishing chamber in opening and closing actions, thereby improving the current opening and closing performance of the circuit breaker.
Disclosure of Invention
The invention designs a transmission device and an intelligent vacuum circuit breaker using the same, which are matched with the existing intelligent driving technology, and can improve the reliability of the vacuum circuit breaker. The main invention is a compound transmission device and an intelligent driving mechanism.
In order to solve the technical problems, the invention adopts the following technical scheme: the transmission device is arranged in the intelligent vacuum circuit breaker and comprises a buffer cylinder, a cavity with one end open is arranged in the buffer cylinder, buffer liquid is arranged in the cavity, the opening of the cavity is sealed through an end cover, one end of a transmission rod is arranged in the cavity, and the other end of the transmission rod extends out through the end cover;
the transmission rod consists of a first section of cylinder, a second section of cylinder, a third section of cylinder and four sections of cylinders which are sequentially connected; the cylinder is arranged in the buffer cylinder cavity, a sealing ring is arranged on the periphery of the cylinder, the sealing ring is in contact with the inner wall of the cavity, and a pressure relief hole for buffer solution to pass through is formed in the cylinder; the diameter of the second section of cylinder is smaller than that of the first section of cylinder, the second section of cylinder passes through the end cover, and an over-travel spring is sleeved between the end cover and the third section of cylinder outside the second section of cylinder; the diameter of the three-section cylinder is smaller than that of the two-section cylinder, and a baffle is sleeved outside the three-section cylinder; the four-section cylinder is provided with external threads, the fastening nut is in threaded connection with the four-section cylinder, and the position of the baffle plate is fixed.
The outside of the baffle plate is provided with a sealing ring.
And a sealing ring is arranged on the contact surface of the end cover and the two sections of cylinders.
The outer side of the buffer cylinder is provided with a guide groove, and a guide ring is arranged in the guide groove.
The intelligent vacuum circuit breaker comprises a vacuum arc-extinguishing chamber, a transmission supporting seat, a transmission device, an intelligent control device and a driving mechanism.
The transmission supporting seat is a cylinder, three sections of cylindrical cavities are formed in the transmission supporting seat, one end of the cylindrical cavity is used for fixing the vacuum arc extinguishing chamber, a groove used for installing the conductive spring is formed in the middle of the cylindrical cavity, and the transmission device is installed in the guide inner cavity of the supporting seat at the other end of the cylindrical cavity.
The buffer cylinder of the transmission device is connected with one section of the moving contact, and the other end of the moving contact passes through the transmission supporting seat and is arranged in the vacuum arc extinguishing chamber.
The four-section cylinder of the transmission device passes through the transmission supporting seat and is connected with the intelligent control device and the driving mechanism.
The beneficial effects of the invention are as follows: compared with a conventional vacuum switch, the intelligent vacuum circuit breaker provided by the invention can effectively inhibit closing bounce, reduce contact ablation, optimize opening characteristics, and improve the opening and closing performance of the circuit breaker, in particular to the reclosing and opening capacity.
Drawings
FIG. 1 is a schematic view of the inventive structure;
FIG. 2 is a schematic diagram of a transmission configuration;
FIG. 3 is a schematic diagram of a drive rod configuration;
fig. 4 is a diagram of the operating state of the transmission.
In the figure: 1. a vacuum arc extinguishing chamber; 11. a moving contact; 2. a transmission support seat; 21. the supporting seat guides the inner cavity; 3-a compound transmission; 31-a buffer cylinder; 32-end cap; 33. a transmission rod; 331. a section of cylinder; 332. a pressure relief hole; 333. a two-section cylinder; 334. three-section cylinder, 335, four-section cylinder; 336. a seal ring; 34. a baffle; 35. a fastening nut; 36. an over travel spring; 37. a buffer; 371. a closing buffer cavity; 372. a brake separating buffer cavity; 38. a guide ring; 4. intelligent control device and driving mechanism.
Detailed Description
The following describes the invention in further detail with reference to the accompanying drawings. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
A transmission device is arranged in an intelligent vacuum circuit breaker, the transmission device 3 comprises a buffer cylinder 31, a cavity with one end open is formed in the buffer cylinder 31, buffer liquid is arranged in the cavity, the opening of the cavity is sealed through an end cover 32, one end of a transmission rod 33 is arranged in the cavity, and the other end of the transmission rod penetrates through the end cover 32 to extend out. The transmission rod 33 is formed by sequentially connecting a first section cylinder 331, a second section cylinder 333, a third section cylinder 334 and a fourth section cylinder 335; the section of cylinder 331 is arranged in the cavity of the buffer cylinder 31, a sealing ring 336 is arranged on the periphery of the section of cylinder 331, the sealing ring 336 is contacted with the inner wall of the cavity, and the section of cylinder 331 is provided with a pressure relief hole 332 for buffer solution to pass through; the diameter of the second section cylinder 333 is smaller than that of the first section cylinder 331, the second section cylinder 333 passes through the end cover 32, and an over-travel spring 36 is sleeved between the end cover 32 and the third section cylinder 334 outside the second section cylinder 333; the diameter of the three-section cylinder 334 is smaller than that of the two-section cylinder 333, and the baffle 34 is sleeved outside the three-section cylinder 334; the four-section cylinder 335 is provided with external threads, the fastening nut 35 is in threaded connection with the four-section cylinder 335, and the position of the baffle 34 is fixed. Preferably, a sealing ring 336 is mounted on the outside of the baffle 34. A sealing ring 336 is mounted on the contact surface of the end cover 32 and the two-stage cylinder 333. The outside of the buffer cylinder 31 is provided with a guide groove in which a guide ring 38 is installed.
The intelligent vacuum circuit breaker comprises a transmission device, and comprises a vacuum arc extinguishing chamber 1, a transmission supporting seat, a transmission device 3, an intelligent control device and a driving mechanism 4. The transmission supporting seat 2 is a cylinder, three sections of cylindrical cavities are formed in the transmission supporting seat, one end of the cylindrical cavity is used for fixing the vacuum arc-extinguishing chamber 1, a groove used for installing a conductive spring is formed in the middle of the cylindrical cavity, and the transmission device 3 is installed in the supporting seat guide inner cavity 21 at the other end of the cylindrical cavity. The buffer cylinder 31 of the transmission device 3 is connected with one section of the moving contact 11, and the other end of the moving contact 11 passes through the transmission supporting seat 2 and is arranged in the vacuum arc extinguishing chamber 1. The four-section cylinder 335 of the transmission device 3 passes through the transmission supporting seat 2 and is connected with the intelligent control device and the driving mechanism 4.
The specific use is as follows: the structure principle of the intelligent vacuum circuit breaker is shown in fig. 1, and the static side of the vacuum arc extinguishing chamber 1 is provided with an insulating support, so that the intelligent vacuum circuit breaker is of conventional design. The motion freedom degree of the moving end is limited by the transmission supporting seat 2, the moving contact 11 of the moving end is connected with the transmission device 3, the four-section cylinder 335 with the function of the insulation pull rod is connected to the intelligent control device and the driving mechanism 4, the intelligent control device and the driving mechanism 4 are provided with a circuit breaker motion information acquisition and output control system, and the motion characteristics and the motion counter force of the circuit breaker can be detected in real time, compared with the calibrated motion characteristics, the output current is controlled, and the motion of the circuit breaker is corrected.
Fig. 2 shows the structural principle of the transmission device 3, firstly, the transmission rods 3 of the buffer cylinders 3 are installed together, after the buffer solution 37 is injected, the end cover 32 is installed, then the over travel spring 36 is installed, then the baffle 34 is pressed tightly by the over travel spring, and the baffle is fastened with the transmission rods by the installation nuts 35, so that the assembly of the device is completed.
Fig. 3 shows the construction details of the drive rod 33, the baffle 34.
Referring to fig. 4, the specific operation principle of the circuit breaker is as follows:
during the closing action, the moving contact 11 receives the action of closing starting inertia force and precompression force of the over travel spring 36, but under the action of movement resistance of the buffer solution 37, the moving contact at the moment of starting is rigid, and when the closing contact collides, the buffer solution of the closing buffer cavity 371 slowly enters the opening buffer cavity 372 through the pressure release hole 332, at the moment, the intelligent control system of the driving mechanism controls the output of the mechanism according to the movement counter force and the travel position of the circuit breaker, so that the pressure between the moving contact and the fixed contact of the arc extinguishing chamber is smoothly transited from the mechanism supply to the over travel spring supply, and the closing bounce is restrained at the same time while the contact pressure between the contacts is ensured.
During the opening action, the mechanism drives the transmission rod 33 to rapidly act, and the buffer solution in the opening buffer cavity 372 is not released, so that the moving contact 11 synchronously enters the opening action, the buffer solution slowly flows back to the closing buffer cavity 371 through the pressure release hole 332 under the action of the over-travel spring 36 in the opening action process, meanwhile, before entering the opening position, the 32 end cover collides with the stopping device, the opening resistance is increased, and the intelligent control device controls the output of the driving mechanism according to the opening resistance and the change of the movement stroke, so that the circuit breaker slowly enters the opening position, and the opening overshoot is effectively inhibited.
In the opening and closing overshoot of the circuit breaker, due to the action of the transmission device 3, simple harmonic vibration of the moving contact caused by collision of the closing contact and release of the opening and closing overtravel spring is effectively inhibited, so that closing bounce can be effectively reduced, and opening stability is improved. Meanwhile, in the opening process, the over-travel spring is in a compressed state, so that compared with a conventional vacuum circuit breaker, the circuit breaker has shorter arcing time and more stable opening and closing performance.
Claims (8)
1. A transmission device is installed in an intelligent vacuum circuit breaker, which is characterized in that: the transmission device (3) comprises a buffer cylinder (31), a cavity with one end open is arranged in the buffer cylinder (31), buffer liquid is arranged in the cavity, the opening of the cavity is sealed through an end cover (32), one end of a transmission rod (33) is arranged in the cavity, and the other end of the transmission rod penetrates through the end cover (32) to extend out;
the transmission rod (33) is formed by sequentially connecting a first section of cylinder (331), a second section of cylinder (333) and a third section of cylinder (334), and the four sections of cylinders (335); the cylinder (331) is arranged in the cavity of the buffer cylinder (31), a sealing ring (336) is arranged on the periphery of the cylinder (331), the sealing ring (336) is contacted with the inner wall of the cavity, and a pressure relief hole (332) for buffer solution to pass through is formed in the cylinder (331); the diameter of the second section cylinder (333) is smaller than that of the first section cylinder (331), the second section cylinder (333) passes through the end cover (32), and an over-travel spring (36) is sleeved between the end cover (32) and the third section cylinder (334) outside the second section cylinder (333); the diameter of the three-section cylinder (334) is smaller than that of the two-section cylinder (333), and a baffle (34) is sleeved outside the three-section cylinder (334); the four-section cylinder (335) is provided with external threads, the fastening nut (35) is in threaded connection with the four-section cylinder (335), and the position of the baffle plate (34) is fixed.
2. A transmission according to claim 1, wherein: a sealing ring (336) is arranged on the outer side of the baffle plate (34).
3. A transmission according to claim 1, wherein: a sealing ring (336) is arranged on the contact surface of the end cover (32) and the two-section cylinder (333).
4. A transmission according to claim 1, wherein: the outside of the buffer cylinder (31) is provided with a guide groove, and a guide ring (38) is arranged in the guide groove.
5. An intelligent vacuum interrupter comprising a transmission as defined in any one of claims 1-4, wherein: comprises a vacuum arc-extinguishing chamber (1), a transmission supporting seat, a transmission device (3), an intelligent control device and a driving mechanism (4).
6. The intelligent vacuum interrupter of claim 5, wherein: the transmission supporting seat (2) is a cylinder, three sections of cylindrical cavities are machined in the transmission supporting seat, one end of the cavity is used for fixing the vacuum arc extinguishing chamber (1), a groove used for installing a conductive spring is formed in the middle of the cavity, and the transmission device (3) is installed in a supporting seat guide inner cavity (21) at the other end of the cavity.
7. The intelligent vacuum interrupter of claim 5, wherein: the buffer cylinder (31) of the transmission device (3) is connected with one section of the moving contact (11), and the other end of the moving contact (11) passes through the transmission supporting seat (2) and is arranged in the vacuum arc extinguishing chamber (1).
8. The intelligent vacuum interrupter of claim 5, wherein: the four-section cylinder (335) of the transmission device (3) passes through the transmission supporting seat (2) to be connected with the intelligent control device and the driving mechanism (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311466522.6A CN117393373A (en) | 2023-11-07 | 2023-11-07 | Transmission device and intelligent vacuum circuit breaker using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311466522.6A CN117393373A (en) | 2023-11-07 | 2023-11-07 | Transmission device and intelligent vacuum circuit breaker using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117393373A true CN117393373A (en) | 2024-01-12 |
Family
ID=89439074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311466522.6A Pending CN117393373A (en) | 2023-11-07 | 2023-11-07 | Transmission device and intelligent vacuum circuit breaker using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117393373A (en) |
-
2023
- 2023-11-07 CN CN202311466522.6A patent/CN117393373A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016058550A1 (en) | Ultra-high-speed mechanical switch | |
| US10923298B1 (en) | Compact pole unit for fast switches and circuit breakers | |
| WO2013048602A1 (en) | Vacuum switching apparatus including first and second movable contact assemblies, and vacuum electrical switching apparatus including the same | |
| CN117393373A (en) | Transmission device and intelligent vacuum circuit breaker using same | |
| CN112259409A (en) | Vacuum arc extinguish chamber, vacuum circuit breaker and switching-on and switching-off control method of vacuum circuit breaker | |
| CN114420513B (en) | Flexible quick breaker driving mechanism | |
| CN209461373U (en) | Vacuum rapid permanent-magnet gas-filling cabinet | |
| CN111968876B (en) | Household high-voltage vacuum circuit breaker | |
| CN209844393U (en) | Environment-friendly gas-insulated totally-enclosed breaker cabinet | |
| CN116936298A (en) | Direct current breaker and quick mechanical switching device in flexible direct current power grid thereof | |
| CN108321004B (en) | Pole post | |
| CN113611550A (en) | Fast mechanical switch for bearing large current | |
| CN220065545U (en) | Outdoor all-insulated circuit breaker of electrified railway | |
| CN110676696B (en) | Ultra-fast high-power vacuum switch with composite trigger gap | |
| CN218447699U (en) | Vacuum contactor for inflating cabinet | |
| CN108493036B (en) | C-GIS high-voltage alternating current breaker | |
| CN113764225B (en) | Vacuum switch device with electromagnetic repulsion disc arranged inside vacuum arc extinguish chamber | |
| CN113436941B (en) | Electromagnetic repulsion mechanism for quick switch and switching-on/off buffering method thereof | |
| CN115295355B (en) | Vacuum contactor for inflating cabinet | |
| CN216793551U (en) | Internal driving type vacuum switch pole device, vacuum switch and high-voltage vacuum switch | |
| CN220710183U (en) | Contact structure for GIS gas insulation isolating switch | |
| CN114639572B (en) | Compact electromagnetic repulsion mechanism of integrated diaphragm spring | |
| CN117410125A (en) | Novel GIS is with quick isolator device | |
| CN111799127B (en) | Direct-acting switch assembly and closed direct-acting switch device | |
| CN115841929B (en) | Column vacuum circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |