CN119153267B - A vacuum circuit breaker - Google Patents
A vacuum circuit breaker Download PDFInfo
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- CN119153267B CN119153267B CN202411638951.1A CN202411638951A CN119153267B CN 119153267 B CN119153267 B CN 119153267B CN 202411638951 A CN202411638951 A CN 202411638951A CN 119153267 B CN119153267 B CN 119153267B
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- 230000009471 action Effects 0.000 claims abstract description 6
- 238000004146 energy storage Methods 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 10
- 241000722921 Tulipa gesneriana Species 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- 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
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- 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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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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
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to the technical field of switching equipment and provides a vacuum circuit breaker which comprises a mounting frame, a solid-sealed pole component, a mechanical interlocking component and an operating component, wherein the mechanical interlocking component comprises a linkage rotating shaft, a driving connecting rod unit connected with a shaft hub of the linkage rotating shaft and an auxiliary switching unit connected with the linkage rotating shaft, the linkage rotating shaft controls the auxiliary switching unit to conduct opening and closing actions through rotation, and the operating component comprises an electric control operating component, a safety switching component and a power-off protection component. According to the vacuum circuit breaker, the three solid sealing polar poles of the solid sealing polar pole component are mechanically interlocked through the linkage rotating shaft, the positioning plate connected with the shaft hub of the linkage rotating shaft is pushed by the manual deflector rod of the safety switch assembly, the electric control operation assembly can be started under the condition that the safety switch assembly is started, and meanwhile, the linkage rotating shaft is pushed to rotate when the normally closed electromagnet is powered off, so that the purpose of safe use is achieved.
Description
Technical Field
The invention relates to the technical field of switch equipment, in particular to a vacuum circuit breaker.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinction are both high vacuum, has the advantages of small volume, light weight, suitability for frequent operation and no maintenance for arc extinction, and is more popular in power distribution networks. The vacuum circuit breaker is an indoor distribution device in a 3-10 kV 50Hz three-phase alternating current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and substations, is particularly suitable for use places requiring oilless maintenance and frequent operation, and can be arranged in a centrally installed switchgear, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.
Most of the existing vacuum circuit breakers can perform electric switching-on and switching-off operation and manual switching-off operation, or perform manual slow switching-on under the condition of no load. However, the vacuum circuit breaker can not perform manual quick closing operation under the condition that a control power supply or a control circuit is out of control, or the vacuum circuit breaker can perform manual quick closing, but the manual quick closing does not have a free tripping function, cannot meet the function requirement of the circuit breaker for switching off and prioritizing, and once the circuit breaker is closed to a short circuit point, the override trip of the upper-stage circuit breaker can occur, so that the range of accident power failure is enlarged, and the stable work of corresponding operation parts is particularly important for ensuring the safe use of the vacuum circuit breaker in emergency.
Disclosure of Invention
Based on the above, in order to solve the problem of lower use safety performance of the vacuum circuit breaker, the invention provides a vacuum circuit breaker, which has the following specific technical scheme:
a vacuum circuit breaker, comprising:
a mounting frame;
the solid-sealed polar pole component comprises three solid-sealed polar poles which are arranged at the front end of the mounting frame in a three-phase distribution mode;
The mechanical interlocking component comprises an interlocking rotating shaft, three driving connecting rod units connected with a shaft hub of the interlocking rotating shaft and an auxiliary switch unit connected with the interlocking rotating shaft, wherein the driving connecting rod units are respectively connected with the three solid-sealed polar poles, and the interlocking rotating shaft controls the auxiliary switch unit to open and close through rotation;
the operation component is arranged on the installation frame and comprises an electric control operation component, a safety switch component and a power-off protection component;
The electric control operation assembly comprises a driving electric cylinder and a connecting rod mechanism, wherein the connecting rod mechanism is provided with a first driving part connected with the driving electric cylinder and a first connecting part connected with a linkage rotating shaft hub, the safety switch assembly comprises a manual shifting rod rotatably connected to the mounting frame and a positioning plate connected with the linkage rotating shaft hub, the manual shifting rod is provided with a shifting position, a first propping position and a second propping position propping against the positioning plate, the power-off protection assembly comprises a normally closed electromagnet provided with an electromagnetic rod and a rotating rod, and the rotating rod is provided with a first propping position propping against the electromagnetic rod and a second propping position propping against the first propping position.
According to the vacuum circuit breaker, the three solid-sealed polar poles are mechanically interlocked through the linkage rotating shaft, the positioning plate connected with the shaft hub of the linkage rotating shaft is pushed by the manual deflector rod of the safety switch assembly, the electric control operation assembly can be started only under the condition that the safety switch assembly is started, and meanwhile, the linkage rotating shaft is pushed to rotate when the normally closed electromagnet is powered off, so that the purpose of safe use is achieved.
The operation component further comprises an energy storage reset component, the energy storage reset component comprises a reset unit, an energy storage unit and an opening and closing rod connected to the linkage rotating shaft through a shaft hub, the reset unit is provided with an input part and an output part, an electromagnetic rod of the normally closed electromagnet stretches out and contacts with the input part of the energy storage reset component in a power-off state and performs energy storage action on the energy storage unit, and the energy storage unit drives the output part to push the opening and closing rod after the normally closed electromagnet is electrified.
The energy storage unit comprises a first torsion spring, a mechanical rotating shaft, an intermediate rotating shaft, a mechanical crankshaft and a mechanical spring, wherein the rotating rod is provided with a sleeve rod shaft part for sleeving the first torsion spring and a rotation limit arranged on the sleeve rod shaft part, the first top contact position forms the input part, the mechanical rotating shaft is provided with a rotation clamping position and a rotation outer arc position matched with the rotation limit, the mechanical crankshaft comprises a main journal, a connecting rod journal and a cam part concentrically connected with the main journal, the connecting rod journal is connected with the mechanical spring, the intermediate rotating shaft is provided with a first roller part matched with the rotation clamping position, a second roller part matched with the cam part and a crank arm arranged on the same circumference with the first roller part, and the first roller part and the crank arm form the output part.
The mechanical rotating shaft comprises a rotating shaft body, a rotating clamping block sleeved on the rotating shaft body, a first elastic clamping block and a second elastic clamping block rotatably connected to the rotating clamping block, wherein the second elastic clamping block forms a rotating clamping position, the energy storage unit further comprises a second torsion spring and a third torsion spring sleeved on the rotating shaft body, the second torsion spring is used for pushing the first elastic clamping block, and the third torsion spring is used for pushing the second elastic clamping block.
Further, the energy storage reset assembly further comprises a unidirectional rotation unit, wherein the unidirectional rotation unit comprises a main gear sleeved on the main journal, a pinion rotationally connected to the mounting frame, a pawl eccentrically arranged on the main gear, a ratchet wheel with a shaft hub connected to the main journal, a claw top block arranged on the mounting frame and an elastic piece for pushing the pawl into a ratchet wheel clamping groove.
The circuit breaker further comprises a control component, the power-off protection component comprises a mechanical detection switch and a mechanical electric cylinder which are arranged on the mounting frame, the rotating rod is provided with a detection position, the mechanical interlocking component further comprises a mechanical jacking block with a shaft hub connected to the linkage rotating shaft, when the circuit breaker is powered off, the electromagnetic rod of the normally closed electromagnet stretches out and jacks the second jacking position, the rotating rod rotates to enable the detection position to be close to the mechanical detection switch, when the circuit breaker is powered on, the mechanical detection switch detects the detection position and sends an electric control signal to the control component, and the control component controls the mechanical electric cylinder to jack the mechanical jacking block, so that the linkage rotating shaft rotates.
The driving connecting rod unit comprises a control block, a connecting arm and a driven arm, wherein the linkage rotating shaft is a spline shaft, the control block is connected with a spline shaft hub, one end of the connecting arm is hinged with the control block, the other end of the connecting arm is hinged with the driven arm, the driven arm is provided with a first hinge part, a second hinge part and a third hinge part which are sequentially arranged, the first hinge part is hinged with the connecting arm, the second hinge part is hinged on the mounting frame, and the third hinge part is hinged with the solid-sealed polar pole.
Further, the link mechanism comprises a first connecting block connected with the linkage rotating shaft hub, a second connecting rod hinged with the first connecting block, and a third connecting rod hinged on the mounting frame.
The solid-sealed polar pole comprises an arc extinguish chamber assembly provided with plum blossom contacts, wherein each plum blossom contact comprises an annular support, contact piece units arranged outside the annular support in a circumferential arrangement mode and an annular spring used for fixing the contact piece units to the annular support, each annular support comprises a first mounting ring supported at the upper end of each contact piece unit, a second mounting ring supported at the lower end of each contact piece unit and a connecting column connected with the corresponding first mounting ring and the corresponding second mounting ring, and the first mounting ring and the second mounting ring support are connected with the corresponding contact piece units through clamping structures respectively.
The positioning component comprises a bottom frame, a roller unit arranged on the outer side of the bottom frame and a clamping component arranged in the bottom frame, wherein the clamping component comprises a first clamping strip unit arranged at the front end of the bottom frame, a second clamping strip unit arranged at the rear end of the bottom frame and a connecting clamping strip unit for connecting the first clamping strip unit and the second clamping strip unit, the first clamping strip unit is provided with a swinging clamping strip, and the clamping part of the swinging clamping strip can be clamped in or out relative to the left side face of the bottom frame.
Drawings
The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a schematic view of a vacuum circuit breaker according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of a part of a vacuum circuit breaker according to an embodiment of the present invention;
fig. 3 is a schematic view of a part of a vacuum circuit breaker according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a first embodiment of an energy storage reset assembly according to the present invention;
FIG. 5 is a schematic diagram illustrating a first embodiment of an energy storage reset assembly according to the present invention;
FIG. 6 is a schematic view of a unidirectional rotation unit according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the rotating rod body, the second torsion spring and the third torsion spring according to an embodiment of the present invention;
FIG. 8 is a schematic view of a portion of the structure of a mounting frame and operating components according to an embodiment of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 2 at E;
FIG. 10 is an enlarged view of a portion of FIG. 3 at F;
FIG. 11 is a partial enlarged view at G in FIG. 3;
Fig. 12 is a schematic structural view of a tulip contact according to an embodiment of the present invention;
Fig. 13 is a schematic structural view of a positioning member according to an embodiment of the present invention.
Reference numerals illustrate:
1. the device comprises a mounting frame, a solid sealing pole component, a mechanical interlocking component, an operating component, a control component, a positioning component and a positioning component, wherein the mounting frame is fixedly sealed with the pole component;
21. The pole is fixedly sealed, 22, plum blossom contacts, 23, arc extinguishing chamber components;
221. 222, a contact unit;
2211. a first mounting ring; 2212, a second mounting ring, 2213, a connecting column;
31. A linkage rotating shaft; 32, a connecting rod unit, 33, an auxiliary switch unit, 34, a mechanical ejector block;
321. control block 322, connecting arm 323, driven arm;
41. An electrically controlled operating assembly; 42 parts of a safety switch assembly, 43 parts of a power-off protection assembly, 44 parts of an energy storage reset assembly, 45 parts of a reset unit, 46 parts of an energy storage unit, 47 parts of an opening and closing rod, 48 parts of a unidirectional rotation unit;
411. Driving electric cylinder 412, link mechanism 413, first connecting block 414, second link 415, third link member;
401. A first driving part, 402, a first connecting part, 403, an input part, 404, an output part;
421. 422, locating plate;
4201. 4202, a first top connection position, 4203, a second top connection position;
4301. 4302, 4303, rotation limit, 4304, detection position;
431. normally closed electromagnet 432, rotating rod 433, mechanical detection switch 434, mechanical electric cylinder;
442. First torsion spring 443, mechanical rotation shaft 444, middle rotation shaft 445, mechanical crank shaft 446, mechanical spring 447, second torsion spring 448, third torsion spring;
4431. 4432, rotating the outer arc position;
4441. 4442, the second roller part, 4443, the crank arm;
4451. 4452, connecting rod journal, 4453, cam part;
4401. the rotating rod body, 4402, a rotating clamping block, 4403, a first elastic clamping block, 4404 and a second elastic clamping block;
481. primary gear 482, secondary gear 483, pawl 484, ratchet wheel 485, claw top block 486, elastic piece;
61. The device comprises a bottom frame, a roller unit, a 63, a clamping assembly, a 64, a first clamping strip unit, a 65, a second clamping strip unit and a 66, wherein the clamping strip unit is connected;
641. And (5) swinging the clamping strip.
Detailed Description
The present invention will be described in further detail with reference to the following examples thereof in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
As shown in fig. 1, 2 and 3, a vacuum circuit breaker according to an embodiment of the present invention includes:
a mounting frame 1;
The solid-sealed polar pole component 2 comprises three solid-sealed polar poles 21, and the three solid-sealed polar poles 21 are arranged at the front end of the mounting frame 1 in a three-phase distribution mode;
The mechanical interlocking part 3 comprises a linkage rotating shaft 31, three driving connecting rod units 32 connected with the shaft hub of the linkage rotating shaft 31 and an auxiliary switch unit 33 connected with the linkage rotating shaft 31, wherein the three driving connecting rod units 32 are respectively connected with the three solid-sealed polar poles 21, and the linkage rotating shaft 31 controls the auxiliary switch unit 33 to perform opening and closing actions through rotation;
An operation member 4 provided on the mounting frame 1 and including an electrically controlled operation assembly 41, a safety switch assembly 42, and a power-off protection assembly 43;
The electric control operation assembly 41 comprises a driving electric cylinder 411 and a link mechanism 412, the link mechanism 412 is provided with a first driving part 401 connected with the driving electric cylinder 411 and a first connecting part 402 connected with a shaft hub of the linkage rotating shaft 31, the safety switch assembly 42 comprises a manual shifting lever 421 rotatably connected to the mounting frame 1 and a positioning plate 422 connected with the shaft hub of the linkage rotating shaft 31, the manual shifting lever 421 is provided with a shifting position 4201, a first propping position 4202 and a second propping position 4203 propped against the positioning plate 422, the power-off protection assembly 43 comprises a normally closed electromagnet 431 provided with an electromagnetic lever and a rotating lever 432, and the rotating lever 432 is provided with a first propping position 4301 for propping against the electromagnetic lever and a second propping position 4302 for propping against the first propping position 4202.
In the vacuum circuit breaker, the three solid-sealed polar poles 21 are mechanically interlocked through the linkage rotating shaft 31, the positioning plate 422 connected with the shaft hub of the linkage rotating shaft 31 is pushed by the manual deflector 421 of the safety switch assembly 42, so that the electric control operation assembly 41 can be started under the condition that the safety switch assembly 42 is opened, meanwhile, the linkage rotating shaft 31 is pushed to rotate by the normally closed electromagnet 431 when the power is off, the opening response speed is high, the structure is safe and reliable, and the aim of safe use is achieved.
As shown in fig. 2, 3, 4, 5 and 6, in one embodiment, the operation component 4 further includes an energy storage reset assembly 44, where the energy storage reset assembly 44 includes a reset unit 45, an energy storage unit 46, and an opening and closing rod 47 connected to the linkage rotating shaft 31 by a shaft hub, the reset unit 45 is provided with an input part 403 and an output part 404, the electromagnetic rod of the normally closed electromagnet 431 extends out and contacts with the input part 403 of the energy storage reset assembly 44 in a power-off state and performs an energy storage action on the energy storage unit 46, and after the normally closed electromagnet 431 is powered on, the energy storage unit 46 drives the output part 404 to push the opening and closing rod 47.
In one embodiment, the energy storage unit 46 includes a first torsion spring 442, a mechanical rotation shaft 443, an intermediate rotation shaft 444, a mechanical crank 445, and a mechanical spring 446, the rotation lever 432 is provided with a lever shaft portion for sleeving the first torsion spring 442, a rotation limit 4303 provided on the lever shaft portion, the first top contact position 4301 forms the input portion 403, the mechanical rotation shaft 443 is provided with a rotation lock position 4431 and a rotation outer arc position 4432 adapted to the rotation limit 4303, the mechanical crank 445 includes a main journal 4451, a link journal 4452, and a cam portion 4453 concentrically connected to the main journal 4451, the link journal 4452 is connected to the mechanical spring 446, the intermediate rotation shaft 444 is provided with a first roller portion 4441 adapted to the rotation lock position 4431, a second roller portion 4442 adapted to the cam portion 4453, and a crank arm 4443 provided on the same circumference as the first roller portion 4441, and the first roller portion 4441 forms the output portion 404.
In one embodiment, the mechanical rotating shaft 443 includes a rotating rod body 4401, a rotating clamping block 4402 sleeved on the rotating rod body 4401, a first elastic clamping block 4403, and a second elastic clamping block 4404 rotatably connected to the rotating clamping block 4402, wherein the second elastic clamping block 4404 forms a rotating clamping position 4431, the energy storage unit 46 further includes a second torsion spring 447 and a third torsion spring 448 sleeved on the rotating rod 432, the second torsion spring 447 is used for pressing the first elastic clamping block 4403, and the third torsion spring 448 is used for pressing the second elastic clamping block 4404. In this way, the second torsion spring 447 and the third torsion spring 448 generate a spring trend, and the first spring clamping block 4403 and the second spring clamping block 4404 are utilized to respectively push the rotation limit 4303 and the first roller portion 4441.
In one embodiment, the energy storage reset assembly 44 further includes a unidirectional rotation unit 48, where the unidirectional rotation unit 48 includes a main gear 481 sleeved on the main journal 4451, a sub gear 482 rotatably connected to the mounting frame 1, a pawl 483 eccentrically disposed on the main gear 481, a ratchet 484 journaled on the main journal 4451, a claw top block 485 disposed on the mounting frame 1, and an elastic member 486 for pushing the pawl 483 into a slot of the ratchet 484. When the mechanical spring 446 performs the energy storage operation, the elastic member 486 pushes one end of the pawl 483 and inserts the one end of the pawl 483 into the slot of the ratchet wheel 484, and when the mechanical spring 446 finishes the energy storage, i.e., the connecting rod journal 4452 rotates counterclockwise to the farthest distance from the fixed end of the mechanical spring 446, the pawl 483 rotates counterclockwise to the position of the pawl top piece 485, and the pawl top piece 485 pushes the other end of the pawl 483 and stops the rotation of the ratchet wheel 484.
In one embodiment, the driving of the pinion 482 is performed by a driving member (not shown), the pinion 482 is engaged with the main gear 481 to rotate clockwise, the ratchet wheel 484 rotates clockwise to drive the link journal 4452 to rotate clockwise to the farthest position away from the fixed end of the mechanical spring 446, the pawl 483 rotates just counterclockwise to the position of the pawl top block 485, and the pawl top block 485 presses the other end of the pawl 483 and disengages the other end of the pawl 483 from the slot of the ratchet wheel 484, so that the main gear 481 can not drive the main journal 4451 to rotate any more. Specifically, the driving member is a driving motor in driving connection with the pinion 482.
In one embodiment, the vacuum circuit breaker further comprises a control part 5, the power-off protection assembly 43 comprises a mechanical detection switch 433 and a mechanical electric cylinder 434 which are arranged on the mounting frame 1, the rotating rod 432 is provided with a detection position 4304, the mechanical interlocking part 3 further comprises a mechanical jacking block 34 which is connected to the linkage rotating shaft 31 in a shaft-hub mode, when the circuit breaker is powered off, the electromagnetic rod of the normally closed electromagnet 431 stretches out and jacks the second jacking position 4302, the rotating rod 432 rotates, so that the detection position 4304 is close to the mechanical detection switch 433, and when the circuit breaker is powered on, the mechanical detection switch 433 detects the detection position 4304 and sends an electric control signal to the control part 5, and the control part 5 controls the mechanical electric cylinder 434 to push the mechanical jacking block 34, so that the linkage rotating shaft 31 rotates.
As shown in fig. 2, fig. 7, fig. 9, fig. 10 and fig. 11, in one embodiment, the driving link unit 32 includes a control block 321, a connecting arm 322 and a driven arm 323, the linkage rotating shaft 31 is a spline shaft, the control block 321 is connected with a spline shaft hub, one end of the connecting arm 322 is hinged with the control block 321, the other end is hinged with the driven arm 323, the driven arm 323 is provided with a first hinge part, a second hinge part and a third hinge part which are sequentially arranged, the first hinge part is hinged with the connecting arm 322, the second hinge part is hinged on the mounting frame 1, and the third hinge part is hinged with the solid-sealed polar pole 21.
In one embodiment, the link mechanism 412 includes a first link block 413 connected to the shaft hub of the link shaft 31, a second link 414 hinged to the first link block 413, and a third link member 415 hinged to the mounting frame 1. In this way, the first connection block 413 and the second connection rod 414 are assisted by the third connection rod 415, so that the driving cylinder 411 can stably drive the first driving portion 401.
As shown in fig. 1 and 12, in one embodiment, the solid-sealed pole 21 includes an arc extinguishing chamber assembly 23 provided with tulip contacts 22, the tulip contacts 22 include an annular bracket 221, contact units 222 disposed outside the annular bracket 221 in a circumferential arrangement, and annular springs (not shown) for fixing the contact units 222 to the annular bracket 221, the annular bracket 221 includes a first mounting ring 2211 supported at an upper end of the contact units 222, a second mounting ring 2212 supported at a lower end of the contact units 222, and a connection pole 2213 connecting the first mounting ring 2211 and the second mounting ring 2212, and the first mounting ring 2211 and the second mounting ring 2212 are connected to the contact units 222 through a snap-fit structure, respectively. Thus, the annular spring is utilized to elastically close and open the contact piece unit 222, so that the contact piece unit 222 has certain inclined swinging capacity, the self-aligning effect can be achieved in the butt joint process, the adaptability and the reliability of the electric connection can be improved, and the problems that the contact connection cannot be stabilized due to the clamping caused by center deviation in the butt joint process are solved.
As shown in fig. 1 and 13, in one embodiment, the positioning member 6 is further provided at the bottom of the mounting frame 1, the positioning member 6 includes a bottom frame 61, a roller unit 62 provided outside the bottom frame 61, and a locking assembly 63 provided in the bottom frame 61, the locking assembly 63 includes a first locking bar unit 64 provided at the front end of the bottom frame 61, a second locking bar unit 65 provided at the rear end of the bottom frame 61, and a connecting locking bar unit 66 connecting the first locking bar unit 64 and the second locking bar unit 65, the first locking bar unit 64 is provided with a swing locking bar 641, and a locking portion of the swing locking bar 641 can be locked or unlocked with respect to the left side surface of the bottom frame 61. In this way, the roller unit 62 is used for conveniently moving the mounting frame 1 so as to overhaul the vacuum circuit breaker, and meanwhile, the swinging clamping strip 641 of the clamping assembly 63 is used for extending, so that the mounting frame 1 is fixedly mounted in the matched clamping strip groove, and the vacuum circuit breaker is ensured to be stably mounted in working.
In one embodiment, a mounting cavity is arranged in the mounting frame 1 and is divided into a first cavity, a second cavity and a third cavity by a partition plate, an electric control operation assembly 41 is arranged in the first cavity, a safety switch assembly 42 is arranged in the second cavity, and a power-off protection assembly 43 is arranged in the third cavity.
The specific use process is as follows:
When the auxiliary switch unit 33 is turned on, the rotating lever 432 is kept at the on position due to the torque provided by the first torsion spring 442, the rotation limit 4303 is clamped to the rotation outer arc 4432, so that the mechanical rotating shaft 443 cannot rotate, at this time, the first roller 4441 of the intermediate rotating shaft 444 is abutted against the rotation clamping 4431, and the mechanical spring 446 is in a stretched state.
When the vacuum circuit breaker is powered off, the electromagnetic rod of the normally closed electromagnet 431 extends to push against the first push contact position 4301 of the rotating rod 432, the rotating rod 432 rotates clockwise (the electromagnetic rod of the normally closed electromagnet 431 extends to enable the rotating rod 432 to rotate clockwise), the rotation limiting 4303 gives way to the rotation outer arc position 4432, the mechanical rotating shaft 443 rotates due to the torque generated by the second torsion spring 447, the rotation clamping position 4431 can rotate along with the clockwise rotation of the mechanical rotating shaft 443, and the cam part 4453 pushes against the second roller part 4442 under the elastic force of the mechanical spring 446, so that the first roller part 4441 can rotate away from the rotation clamping position 4431 to rotate clockwise and push the opening and closing rod 47, the linkage rotating shaft 31 rotates, and the auxiliary switch unit 33 is in an opening state;
When the switching-on operation is performed, an operator needs to dial the manual shifting lever 421 to make the second propping position 4203 far away from the positioning plate 422 and the first torsion spring 442 to generate a rotating elastic trend, the mechanical detection switch 433 detects the position of the detection position 4304 in the rotating lever 432, the control component 5 controls the mechanical electric cylinder 434 to push the mechanical ejecting block 34 and the linkage rotating shaft 31 to rotate, the opening and closing lever 47 pushes the crank arm 4443 to rotate clockwise, the second roller 4442 pushes the cam 4453 to rotate clockwise, the mechanical spring 446 starts to perform an energy storage action, namely, the mechanical spring is converted into a stretching state from a retracted state, and meanwhile, the first roller 4441 pushes the rotation clamping position 4431 to rotate clockwise, and when the rotation outer arc 4432 is separated from the rotation limiting 4303, the sleeve rod shaft of the rotating lever 432 rotates under the elastic force generated by the first torsion spring 442, so as to clamp the rotation outer arc 4432 to position.
When the mechanical detection switch 433 does not detect the position of the detection position 4304 in the rotating lever 432, the electronic control operation assembly 41 can perform normal opening and closing operations.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1.A vacuum circuit breaker, comprising:
a mounting frame;
the solid-sealed polar pole component comprises three solid-sealed polar poles which are arranged at the front end of the mounting frame in a three-phase distribution mode;
The mechanical interlocking component comprises an interlocking rotating shaft, three driving connecting rod units connected with a shaft hub of the interlocking rotating shaft and an auxiliary switch unit connected with the interlocking rotating shaft, wherein the driving connecting rod units are respectively connected with the three solid-sealed polar poles, and the interlocking rotating shaft controls the auxiliary switch unit to open and close through rotation;
the operation component is arranged on the installation frame and comprises an electric control operation component, a safety switch component and a power-off protection component;
the electric control operation assembly comprises a driving electric cylinder and a connecting rod mechanism, wherein the connecting rod mechanism is provided with a first driving part connected with the driving electric cylinder and a first connecting part connected with the shaft hub of the linkage rotating shaft;
The safety switch assembly comprises a manual deflector rod rotatably connected to the mounting frame and a positioning plate connected with the shaft hub of the linkage rotating shaft, wherein the manual deflector rod is provided with a deflector position, a first propping position and a second propping position propping against the positioning plate;
The power-off protection assembly comprises a normally closed electromagnet provided with an electromagnetic rod and a rotating rod, wherein the rotating rod is provided with a first top contact position for propping against the electromagnetic rod and a second top contact position for propping against the first top contact position;
The electromagnetic rod of the normally closed electromagnet stretches out and contacts with the input part of the energy storage reset assembly in a propping mode in a power-off state, and performs energy storage action on the energy storage unit;
after the normally closed electromagnet is electrified, the energy storage unit drives the output part to push the opening and closing rod;
the energy storage unit comprises a first torsion spring, a mechanical rotating shaft, an intermediate rotating shaft, a mechanical crankshaft and a mechanical spring;
The rotating rod is provided with a sleeve rod shaft part for sleeving the first torsion spring and a rotation limit arranged on the sleeve rod shaft part, and the first top contact position forms the input part;
the mechanical rotating shaft is provided with a rotating clamping position and a rotating outer arc position matched with the rotating limiting position;
The mechanical crankshaft comprises a main journal, a connecting rod journal and a cam part concentrically connected with the main journal, and the connecting rod journal is connected with the mechanical spring;
The middle rotating shaft is provided with a first roller part matched with the rotating clamping position, a second roller part matched with the cam part and a crank arm arranged on the same circumference with the first roller part, and the first roller part and the crank arm form the output part.
2. The vacuum circuit breaker according to claim 1, wherein the mechanical rotation shaft comprises a rotation shaft body, a rotation clamping block sleeved on the rotation shaft body, a first elastic clamping block, and a second elastic clamping block rotatably connected to the rotation clamping block, and the second elastic clamping block forms the rotation clamping position;
The energy storage unit further comprises a second torsion spring and a third torsion spring which are sleeved on the rotating rod;
the second torsion spring is used for snapping the first elastic clamping block, and the third torsion spring is used for snapping the second elastic clamping block.
3. The vacuum circuit breaker according to claim 1, wherein the energy storage reset assembly further comprises a unidirectional rotation unit, the unidirectional rotation unit comprises a main gear sleeved on the main journal, a pinion rotatably connected to the mounting frame, a pawl eccentrically arranged on the main gear, a ratchet wheel with a shaft hub connected to the main journal, a claw top block arranged on the mounting frame, and an elastic member pushing the pawl into a ratchet wheel clamping groove.
4. A vacuum circuit breaker according to claim 1, characterized in that the circuit breaker further comprises a control member;
the power-off protection assembly comprises a mechanical detection switch and a mechanical electric cylinder which are arranged on the mounting frame;
the rotating rod is provided with a detection position;
the mechanical interlocking part further comprises a mechanical top block with a shaft hub connected to the linkage rotating shaft;
When the circuit breaker is powered off, the electromagnetic rod of the normally closed electromagnet stretches out and props against the second propping position, and the rotating rod rotates, so that the detection position is close to the mechanical detection switch;
When the circuit breaker is electrified, the mechanical detection switch detects the detection position and sends an electric control signal to the control component, and the control component controls the mechanical electric cylinder to push the mechanical jacking block, so that the linkage rotating shaft rotates.
5. The vacuum circuit breaker according to claim 1, wherein the driving link unit includes a control block, a connecting arm, and a driven arm, the linkage rotating shaft is a spline shaft, and the control block is connected with the spline shaft hub;
one end of the connecting arm is hinged with the control block, and the other end of the connecting arm is hinged with the driven arm;
The driven arm is provided with a first hinge part, a second hinge part and a third hinge part which are sequentially arranged, the first hinge part is hinged with the connecting arm, the second hinge part is hinged on the mounting frame, and the third hinge part is hinged with the solid-sealed polar pole.
6. The vacuum circuit breaker according to claim 1, wherein the link mechanism comprises a first link block connected to the linkage shaft hub, a second link hinged to the first link block, and a third link member hinged to the mounting frame.
7. The vacuum circuit breaker of claim 1, wherein the solid-sealed pole comprises an arc chute assembly provided with tulip contacts;
The plum blossom contact comprises an annular support, contact sheet units arranged outside the annular support in a circumferential arrangement manner and an annular spring used for fixing the contact sheet units on the annular support, wherein the annular support comprises a first mounting ring supported at the upper end of the contact sheet units, a second mounting ring supported at the lower end of the contact sheet units and a connecting column connected with the first mounting ring and the second mounting ring, and the first mounting ring and the second mounting ring support are connected with the contact sheet units through clamping structures respectively.
8. The vacuum circuit breaker according to claim 1, further comprising a positioning member provided at a bottom of the mounting frame;
the positioning component comprises a bottom frame, a roller unit arranged on the outer side of the bottom frame and a clamping component arranged in the bottom frame;
The clamping assembly comprises a first clamping strip unit arranged at the front end of the bottom frame, a second clamping strip unit arranged at the rear end of the bottom frame, and a connecting clamping strip unit for connecting the first clamping strip unit and the second clamping strip unit;
The first clamping strip unit is provided with a swinging clamping strip, and the clamping part of the swinging clamping strip can be clamped in or clamped out relative to the left side surface of the bottom frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411638951.1A CN119153267B (en) | 2024-11-18 | 2024-11-18 | A vacuum circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411638951.1A CN119153267B (en) | 2024-11-18 | 2024-11-18 | A vacuum circuit breaker |
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| CN119153267A CN119153267A (en) | 2024-12-17 |
| CN119153267B true CN119153267B (en) | 2025-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411638951.1A Active CN119153267B (en) | 2024-11-18 | 2024-11-18 | A vacuum circuit breaker |
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| CN119786304B (en) * | 2024-12-31 | 2025-12-19 | 广东求精电气有限公司 | A vacuum circuit breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206331970U (en) * | 2017-01-13 | 2017-07-14 | 浙江巨力电气有限公司 | The permanent magnetic spring dual-mechanism structure of outdoor high-voltage alternating-current vacuum breaker |
| CN109411253A (en) * | 2018-11-02 | 2019-03-01 | 国网山东省电力公司平度市供电公司 | A kind of the switching control device and working method of double-bus power supply line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207082444U (en) * | 2017-08-15 | 2018-03-09 | 苏州科陆东自电气有限公司 | A kind of closing by hand device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206331970U (en) * | 2017-01-13 | 2017-07-14 | 浙江巨力电气有限公司 | The permanent magnetic spring dual-mechanism structure of outdoor high-voltage alternating-current vacuum breaker |
| CN109411253A (en) * | 2018-11-02 | 2019-03-01 | 国网山东省电力公司平度市供电公司 | A kind of the switching control device and working method of double-bus power supply line |
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| CN119153267A (en) | 2024-12-17 |
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