CN106128886A - A kind of chopper and the vacuum interrupter for chopper - Google Patents
A kind of chopper and the vacuum interrupter for chopper Download PDFInfo
- Publication number
- CN106128886A CN106128886A CN201610512952.0A CN201610512952A CN106128886A CN 106128886 A CN106128886 A CN 106128886A CN 201610512952 A CN201610512952 A CN 201610512952A CN 106128886 A CN106128886 A CN 106128886A
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- China
- Prior art keywords
- arc
- chutes
- contact
- housing
- porcelain
- 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.)
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- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 96
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 41
- 229910045601 alloy Inorganic materials 0.000 claims description 22
- 239000000956 alloy Substances 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 22
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 235000011158 Prunus mume Nutrition 0.000 claims description 2
- 244000018795 Prunus mume Species 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- 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
Abstract
The invention discloses a kind of chopper and the vacuum interrupter for chopper, described chopper includes base, it is fixedly mounted on the shell of base front upper, it is fixedly connected on three cases above described base rear portion, inlet wire seat, wire outlet seat and the arc-chutes being fixedly mounted in each case；Arc-chutes include a porcelain shell, and porcelain shell includes arc-chutes housing, actuating housing, and is integrally attached to the connecting tube between arc-chutes housing and actuating housing sidewall, and arc-chutes housing upper end connects upper cover body, and lower end connects lower cover；Connect the upper conducting rod having through upper cover body in upper cover body, lower cover connects the lower conducting rod having through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head；On lower conducting rod, slip cap is connected to lower contact assembly；The dynamic iron core driving described lower contact assembly is installed in actuating housing.The arc-chutes of chopper of the present invention have excellent sealing property, and service life is long.
Description
Technical field
The invention belongs to field of electrical equipment, be specifically related to the structure of a kind of vacuum circuit breaker.
Background technology
The arc-chutes of existing vacuum circuit breaker typically connect at lower slide a moving conductive rod, operating mechanism and moving conductive rod it
Between with insulator connect realize linkage, by operating mechanism control moving conductive rod upper end moving contact lead with the quiet of arc-chutes top
The static contact of electric pole lower end closes or separates, thus realizes the switch closing and switch opening of chopper；In order to ensure the vacuum in arc-chutes
Degree, is also associated with metal bellows between moving conductive rod and arc-chutes bottom, and when moving conductive rod downward separating brake, corrugated tube is received
Contracting, when moving conductive rod upwards closes a floodgate, corrugated tube stretches, and during repeatedly divide-shut brake, corrugated tube easily produces strain and affects and go out
Vacuum in arc chamber, directly affects arc quenching effect.The Chinese patent of Patent No. 2009101323216 discloses a kind of great Rong
Amount vacuum circuit breaker, it improves the turn-off capacity of chopper by applying longitudinal magnetic field between electrical conductor, but its arc extinguishing
Room still have employed corrugated tube and realizes sealing, and solves the sealing problem of arc-chutes the most very well, at vacuum circuit breaker deciliter
Easily there is poor sealing and the fault that causes in the more rear arc-chutes of lock number of times.
Summary of the invention
The technical problem to be solved is: the deficiency existed for prior art, it is provided that a kind of arc-chutes good airproof performance,
Service life length breaker structure.
For realizing the purpose of the present invention, it is achieved by the following technical solutions: a kind of chopper, includes base, Gu
Dingan County is contained in the shell of base front upper, is fixedly connected on three cases above described base rear portion, is fixedly mounted on every
The inlet wire seat of individual case internal upper part, is fixedly mounted in each case the wire outlet seat at middle part, and in being arranged on case and with enter
The arc-chutes that line seat, wire outlet seat are connected；
Described inlet wire seat, wire outlet seat are connected to copper bar towards the end at chopper rear, and the rearward end of copper bar connects prunus mume (sieb.) sieb.et zucc.
Flower contact；On described case, the position of each copper bar corresponding forms the vestlet covering described copper bar；
Described arc-chutes include a porcelain shell, and described porcelain shell includes the arc-chutes housing of the tubulose of a both ends open, and one
The actuating housing of the individual upper end closed lower ending opening being positioned at immediately below arc-chutes housing, and it is integrally attached to described arc-chutes shell
Two symmetrically arranged connecting tubes between body and actuating housing sidewall；The upper and lower side of described connecting tube is circular assembling pipe
Mouthful, the mouth of pipe has been sealedly and fixedly connected capping；Bar shaped is formed between described connecting tube upper portion side wall and arc-chutes housing sidewall
Upper through hole, form the lower through-hole of bar shaped between described connecting tube lower sides and actuating housing sidewall；
Described arc-chutes housing upper end fixed seal connection has upper cover body, under described arc-chutes housing lower end fixed seal connection has
Lid；In described upper cover body, fixed seal connection has a upper conducting rod through upper cover body, fixing seal on described lower cover
Connect the lower conducting rod having through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head, described lower conducting rod
Upper slip cap is provided with lower contact assembly；
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact and is integrally attached to the socket pipe of lower contact lower end, in the middle part of described socket pipe
Position forms the first contact part, and the bottom of described socket pipe forms the second contact part, and described socket pipe is positioned at first
The position of contact part and the second contact part circumferentially offers the strip crevice being placed equidistant, each described first contact part,
Two contact part are between two adjacent strip crevices；Outside described first contact part and the second contact part are with described lower conducting rod
Wall is slidably matched electrical connection；
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth, described porcelain
Being provided with two semicircular isolation porcelain rings on ring cooperation mouth, the two ends of isolation porcelain ring are connected with extension respectively, described
It is arranged with two semicircular silicon steel blocks outside isolation porcelain ring, connects by screw is fixing between two described silicon steel blocks, described silicon
Bloom inwall form with isolate porcelain ring coordinate location porcelain ring notch；
Described arc-chutes inner walls position between described upper contact head, lower contact form respectively centring ring, under
Centring ring；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a shielding cylinder；Described porcelain
Between lower centring ring and silicon steel block, memory alloy spring is installed in shell；
Described actuating housing connection fixed above has upper Magnet, and described actuating housing inner top is installed with upper magnet yoke, described
The lower end fixed seal connection of actuating housing has lower yoke, is fixedly connected with lower magnet below described lower yoke；Described actuating housing
In between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core, set by two between described dynamic iron core and described silicon steel block
The connecting rod being placed in connecting tube is fixedly linked；
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil, and electromagnet coil constitutes one with dynamic iron core
Electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
As preferably: described electromagnet coil is electrically connected by soft wire with the controller installed in the enclosure, and soft
The part that matter wire is positioned at outside shell is helical wire form.
As preferably: described porcelain shell uses 3d to fire formation after printing technique molding blank.
As preferably: when described lower contact and described upper contact head are in "on" position, between described dynamic iron core and upper magnet yoke
There is the spacing of 0.5-2.0mm.
As preferably: described upper magnet yoke is cylinder, upper magnet yoke outer wall forms external screw thread, in described actuating housing upper
Wall forms the female thread that the external screw thread with described upper magnet yoke matches, and described female thread is that tooth is tall and big in the trapezoidal spiral shell of 3.0mm
Stricture of vagina.
As preferably: at least one described porcelain shell outer wall is provided with temperature sensor, and wire is passed through in each temperature sensor
It is electrically connected with the controller；When temperature sensor detects that temperature is higher than setting value, controller controls electromagnet coil power and produces
Life and upper Magnet magnetic field in the same direction.
As preferably: described second contact part end forms edge of turning up, described in edge end of turning up upwardly extend, often
Spliced eye is offered in edge of turning up described in individual；Described socket pipe outer cooperation in the second contact part and porcelain ring is arranged with between mouth
Memorial alloy ring, the position of described memorial alloy ring lower end each described spliced eye corresponding is connected with deformation arm, each shape
The bottom becoming arm is connected with the Plug Division coordinating grafting with described spliced eye；Two institutes it are positioned on described memorial alloy ring
State the position between deformation arm and there is a gap；Described memorial alloy ring is clamped in the extension of socket pipe outer wall and isolation porcelain ring
Between portion.
As preferably: described connecting rod lower end is fixedly connected with lower contact by screw, spiral shell is passed through in described connecting rod upper end
Nail is fixedly connected with top connection；The connector coordinating grafting with described top connection, described top connection is formed on described silicon steel block
It is fixedly connected on silicon steel block by screw；Described dynamic iron core upper end forms two and lacks with the connection of lower contact mating shapes
Mouthful, it is connected by screw is fixing between described dynamic iron core and described lower contact.
The present invention also provides for a kind of vacuum interrupter, includes a porcelain shell, and described porcelain shell includes a both ends open
The arc-chutes housing of tubulose, the actuating housing of the upper end closed lower ending opening that is positioned at immediately below arc-chutes housing, and
Two the symmetrically arranged connecting tubes being integrally attached between described arc-chutes housing and actuating housing sidewall；Described connecting tube
Upper and lower side is the circular assembling mouth of pipe, and the mouth of pipe has been sealedly and fixedly connected capping；Described connecting tube upper portion side wall and arc-chutes shell
Form the upper through hole of bar shaped between body sidewall, between described connecting tube lower sides and actuating housing sidewall, form bar shaped
Lower through-hole；
Described arc-chutes housing upper end fixed seal connection has upper cover body, under described arc-chutes housing lower end fixed seal connection has
Lid；In described upper cover body, fixed seal connection has a upper conducting rod through upper cover body, fixing seal on described lower cover
Connect the lower conducting rod having through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head, described lower conducting rod
Upper slip cap is provided with lower contact assembly；
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact and is integrally attached to the socket pipe of lower contact lower end, in the middle part of described socket pipe
Position forms the first contact part, and the bottom of described socket pipe forms the second contact part, and described socket pipe is positioned at first
The position of contact part and the second contact part circumferentially offers the strip crevice being placed equidistant, each described first contact part,
Two contact part are between two adjacent strip crevices；Outside described first contact part and the second contact part are with described lower conducting rod
Wall is slidably matched electrical connection；
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth, described porcelain
Being provided with two semicircular isolation porcelain rings on ring cooperation mouth, the two ends of isolation porcelain ring are connected with extension respectively, described
It is arranged with two semicircular silicon steel blocks outside isolation porcelain ring, connects by screw is fixing between two described silicon steel blocks, described silicon
Bloom inwall form with isolate porcelain ring coordinate location porcelain ring notch；
Described arc-chutes inner walls position between described upper contact head, lower contact form respectively centring ring, under
Centring ring；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a shielding cylinder；Described porcelain
Between lower centring ring and silicon steel block, memory alloy spring is installed in shell；
Described actuating housing connection fixed above has upper Magnet, and described actuating housing inner top is installed with upper magnet yoke, described
The lower end fixed seal connection of actuating housing has lower yoke, is fixedly connected with lower magnet below described lower yoke；Described actuating housing
In between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core, set by two between described dynamic iron core and described silicon steel block
The connecting rod being placed in connecting tube is fixedly linked；
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil, and electromagnet coil constitutes one with dynamic iron core
Electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
Compared with prior art, the invention has the beneficial effects as follows: the chopper of the present invention is vacuum circuit breaker, the present invention
Lower conducting rod in the arc-chutes of chopper is designed to fix the form being connected with lower cover, then slides in lower conducting rod upper end
A sheathed lower contact assembly, and silicon steel block is installed on lower contact assembly, silicon steel block connects a dynamic iron core by connecting rod,
Coordinated with upper Magnet, lower magnet by the electric magnet that is made up of electromagnet coil and dynamic iron core and drive the upper and lower of lower contact assembly
Mobile, thus realize divide-shut brake.
Described dynamic iron core is arranged in the actuating housing of porcelain shell, and electromagnet coil is then arranged on outside actuating housing and dynamic ferrum
The position that core is corresponding, the parts in porcelain shell make the space in porcelain shell become close to vacuum by adding thermal exhaust after having assembled
State, the upper Magnet of heat labile permanent magnet material, lower magnet are fixedly installed to the relevant position on porcelain shell.Pass through
Such mode so that need the parts producing displacement to be all integrated in arc-chutes during divide-shut brake, simplify vacuum
The structure of chopper, this eliminates the metal bellows for sealing, it can be ensured that good sealing effectiveness.
When circuit be short-circuited need separating brake time due to electric current excessive, separating brake has difficulties, and short circuit time circuit caloric value
Greatly, therefore arranging memory alloy spring in arc-chutes, when arc extinguishing indoor temperature raises, memory alloy spring produces phase transformation (root
The temperature value on border selects the memory alloy spring of phase transition temperature coupling factually), produce the trend of elongation, such permanent magnet a and electricity
Magnet driving silicon steel block moves down when realizing separating brake, and memory alloy spring produces downward thrust simultaneously, it is ensured that separating brake success.
Before separating brake, in order to make memory alloy spring extend at present between contact and upper contact head not because contact pressure mistake
Little even produce gap and cause electric arc to occur, therefore by controller control electromagnet coil produce and upper Magnet magnetic in the same direction
, temporarily overcome the thrust of memory alloy spring with the dynamic suction between iron core and upper magnet yoke of increase, until controlling during separating brake
Device controls electromagnet coil again and produces reverse with upper Magnet, carries out separating brake with lower magnet magnetic field in the same direction.
Additionally, due to described lower contact assembly, there are two groups of contact part, so can make when circuit is short-circuited and needs separating brake
Become bigger resistance, therefore in the second contact part position, memorial alloy ring is installed, raise in line short contact assembly temperature at present, note
The deformation arm recalling alloy hoop is bent outwardly so that the pressure between the second contact part and lower conducting rod reduces, and beneficially separating brake is at present
Contact assembly can slide along lower conducting rod with relatively low frictional resistance.
Obtained the temperature information outside porcelain shell by temperature sensor, can the current information that detects of combination current transformer,
Judging the working condition of arc-chutes more accurately, separating brake can be carried out timely and accurately when there is fault, it is ensured that electricity consumption sets
Standby safe operation.
Electrification device is covered by the described case of isolation material and the vestlet being integrally attached on case, strengthens safety
Property, the most described inlet wire seat, wire outlet seat be fixedly connected on case, the beneficially fixed installation of arc-chutes.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the structural representations of the present invention.
Fig. 3, Fig. 4 are the attachment structure schematic diagrams of critical piece of the present invention.
Fig. 5 is arc-chutes and the structural representation of operating mechanism part.
Fig. 6 is the sectional structure schematic diagram of arc-chutes and operating mechanism part.
Fig. 7 is the decomposition texture schematic diagram of arc-chutes and operating mechanism part.
Fig. 8 is the structural representation of porcelain shell.
Fig. 9 is the sectional structure schematic diagram of porcelain shell.
Figure 10 is lower contact assembly and the structural representation of lower conducting rod part.
Figure 11 is the structural representation of lower contact assembly.
Figure 12 is the sectional structure schematic diagram of lower contact assembly.
Figure 13 is the structural representation of memorial alloy ring.
1, base；2, shell；31, wire outlet seat；32, inlet wire seat；33, copper bar；34, Mume flower contact；
5, arc-chutes；51, lower conducting rod；52, porcelain shell；52a, arc-chutes housing；52b, connecting tube；52c, actuating housing；5201、
Lower centring ring；5202, upper centring ring；5203, the assembling mouth of pipe；5204, upper through hole；5205, lower through-hole；521, lower cover；522、
Upper cover body；523, capping；53, upper conducting rod；531, upper contact head；54, shielding cylinder；55, lower contact assembly；551, lower contact；
552, socket pipe；5521, the first contact part；5522, porcelain ring coordinates mouth；5523, the second contact part；5524, turn up edge；
5525, spliced eye；56, memory alloy spring；57, isolation porcelain ring；571, extension；58, silicon steel block；581, porcelain ring coordinates recessed
Mouthful；582, connector；59, memorial alloy ring；591, gap；592, deformation arm；593, Plug Division；7, electromagnet coil；71, on
Magnet；72, lower yoke；73, lower magnet；74, upper magnet yoke；75, dynamic iron core；751, breach is connected；76, connecting rod；761, connect under
Head；762, top connection；8, case；81, vestlet.
Detailed description of the invention
Embodiment 1
According to shown in Fig. 1 to Figure 13, the present embodiment is a kind of chopper, includes base 1, is fixedly mounted on base front upper
Shell 2, be fixedly connected on three cases 8 above described base rear portion, be fixedly mounted on the inlet wire of each case internal upper part
Seat 32, is fixedly mounted in each case the wire outlet seat 31 at middle part, and in being arranged on case and is connected with inlet wire seat, wire outlet seat
The arc-chutes 5 connect.
Described inlet wire seat, wire outlet seat are connected to copper bar 33 towards the end at chopper rear, and the rearward end of copper bar is even
It is connected to Mume flower contact 34；On described case, the position of each copper bar corresponding forms the vestlet 81 covering described copper bar.
Described arc-chutes include a porcelain shell 52, and described porcelain shell includes the arc-chutes shell of the tubulose of a both ends open
Body 52a, the actuating housing 52c of the upper end closed lower ending opening that is positioned at immediately below arc-chutes housing, and be integrally attached to
Two symmetrically arranged connecting tubes 52b between described arc-chutes housing and actuating housing sidewall；The upper and lower side of described connecting tube
For the circular assembling mouth of pipe 5203, the mouth of pipe has been sealedly and fixedly connected capping 523；Described connecting tube upper portion side wall and arc-chutes shell
Form the upper through hole 5204 of bar shaped between body sidewall, between described connecting tube lower sides and actuating housing sidewall, form bar
The lower through-hole 5205 of shape.
Described arc-chutes housing upper end fixed seal connection has upper cover body 522, described arc-chutes housing lower end fixing seal
Connect and have lower cover 521；In described upper cover body, fixed seal connection has a upper conducting rod 53 through upper cover body, described lower cover
On body, fixed seal connection has a lower conducting rod 51 through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head
531, on described lower conducting rod, slip cap is provided with lower contact assembly 55.
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact 551 and is integrally attached to the socket pipe 552 of lower contact lower end, described socket
Pipe medium position forms the first contact part 5521, and the bottom of described socket pipe forms the second contact part 5523, described set
The position being positioned at the first contact part and the second contact part in adapter circumferentially offers the strip crevice being placed equidistant, each described
First contact part, the second contact part are between two adjacent strip crevices；Described first contact part and the second contact part with
Described lower conducting rod outer wall is slidably matched electrical connection.
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth
5522, described porcelain ring cooperation mouth is provided with two semicircular isolation porcelain rings 57, the two ends of isolation porcelain ring one respectively connects
There is extension 571, be arranged with two semicircular silicon steel blocks 58 outside described isolation porcelain ring, between two described silicon steel blocks, pass through spiral shell
Nail is fixing to be connected, and described silicon steel block inwall forms and isolates porcelain ring and coordinate the porcelain ring notch 581 positioned.
Described second contact part end forms edge 5524 of turning up, described in edge end of turning up upwardly extend, Mei Gesuo
State and in edge of turning up, offer spliced eye 5525；Described socket pipe outer cooperation in the second contact part and porcelain ring is arranged with between mouth
Memorial alloy ring 59, the position of described memorial alloy ring lower end each described spliced eye corresponding is connected with deformation arm 592, often
The bottom of individual deformation arm is connected with the Plug Division 593 coordinating grafting with described spliced eye；Described memorial alloy ring is upper
Position between two described deformation arms has a gap 591；Described memorial alloy ring be clamped in socket pipe outer wall with every
Between the extension of porcelain ring.
Described arc-chutes inner walls position between described upper contact head, lower contact form centring ring respectively
5202, lower centring ring 5201；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a screen
Cover cylinder 54；In described porcelain shell, memory alloy spring 56 is installed between lower centring ring and silicon steel block.
Described actuating housing connection fixed above has upper Magnet 71, described actuating housing inner top to be installed with upper magnet yoke
74, described actuating housing lower end fixed seal connection has lower yoke 72, is fixedly connected with lower magnet 73 below described lower yoke；Institute
State between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core 75 in actuating housing, described dynamic iron core and described silicon steel block it
Between be fixedly linked by two connecting rods being arranged in connecting tube 76.
Described connecting rod lower end is fixedly connected with lower contact 761 by screw, and described connecting rod upper end is fixed by screw
Connect and have top connection 762；The connector 582 coordinating grafting with described top connection, described top connection is formed on described silicon steel block
It is fixedly connected on silicon steel block by screw；Described dynamic iron core upper end forms two and lacks with the connection of lower contact mating shapes
Mouth 751, is connected by screw is fixing between described dynamic iron core and described lower contact.
Described connecting rod reconnects joint, lower contact after loading in connecting tube, and the bore of such connecting tube can do
Must be less, it is beneficial to ensure the intensity that porcelain shell is overall.Each capping of connecting tube end is installed after connecting rod installation again.
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil 7, electromagnet coil and dynamic iron core structure
Become an electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
Described electromagnet coil is electrically connected by soft wire with the controller installed in the enclosure, and soft wire is positioned at
Part outside shell is helical wire form.
Described porcelain shell uses 3d to fire formation after printing technique molding blank.Porcelain shell structure is complex, uses 3d to print
Mode makes and can ensure preferable dimensional accuracy and uniform density, it is ensured that the bulk strength of porcelain shell after sintering.
When described lower contact and described upper contact head are in "on" position, between described dynamic iron core and upper magnet yoke, there is 0.5-
The spacing of 2.0mm.Utilize dynamic magnetic force between iron core and upper magnet yoke to applying a contact pressure between upper contact head, lower contact,
Guarantee good electric conductivity.
Described upper magnet yoke is cylinder, and upper magnet yoke outer wall forms external screw thread, and described actuating housing upper inwall forms
The female thread matched with the external screw thread of described upper magnet yoke, described female thread is that tooth is tall and big in the trapezoidal thread of 3.0mm.Upper magnet yoke
It is arranged in actuating housing and stress to be continued, therefore re-uses heat-resistant adhesive after being threaded connection and do the most fixing, it is ensured that peace
Dress firmness.
The described base rear portion rear block cover 11 being provided with a rearward openings fixed above, rear block cover offers for described
The port that insulator passes.
At least one described porcelain shell outer wall is provided with temperature sensor, and each temperature sensor is by wire and controller electricity
Connect；When temperature sensor detects that temperature is higher than setting value, controller controls electromagnet coil power and produces and upper Magnet
Magnetic field in the same direction.
The chopper of the present invention is vacuum circuit breaker, the lower conducting rod in the arc-chutes of chopper of the present invention be designed to under
Lid fixes the form of connection, and then slide a sheathed lower contact assembly in lower conducting rod upper end, and on lower contact assembly
Installing silicon steel block, silicon steel block connects a dynamic iron core by connecting rod, by the electromagnetism being made up of electromagnet coil and dynamic iron core
Ferrum coordinates with upper Magnet, lower magnet and drives moving up and down of lower contact assembly, thus realizes divide-shut brake.
Described dynamic iron core is arranged in the actuating housing of porcelain shell, and electromagnet coil is then arranged on outside actuating housing and dynamic ferrum
The position that core is corresponding, the parts in porcelain shell make the space in porcelain shell become close to vacuum by adding thermal exhaust after having assembled
State, the upper Magnet of heat labile permanent magnet material, lower magnet are fixedly installed to the relevant position on porcelain shell.Pass through
Such mode so that need the parts producing displacement to be all integrated in arc-chutes during divide-shut brake, simplify vacuum
The structure of chopper, this eliminates the metal bellows for sealing, it can be ensured that good sealing effectiveness.
When circuit be short-circuited need separating brake time due to electric current excessive, separating brake has difficulties, and short circuit time circuit caloric value
Greatly, therefore arranging memory alloy spring in arc-chutes, when arc extinguishing indoor temperature raises, memory alloy spring produces phase transformation (root
The temperature value on border selects the memory alloy spring of phase transition temperature coupling factually), produce the trend of elongation, such permanent magnet a and electricity
Magnet driving silicon steel block moves down when realizing separating brake, and memory alloy spring produces downward thrust simultaneously, it is ensured that separating brake success.
Before separating brake, in order to make memory alloy spring extend at present between contact and upper contact head not because contact pressure mistake
Little even produce gap and cause electric arc to occur, therefore by controller control electromagnet coil produce and upper Magnet magnetic in the same direction
, temporarily overcome the thrust of memory alloy spring with the dynamic suction between iron core and upper magnet yoke of increase, until controlling during separating brake
Device controls electromagnet coil again and produces reverse with upper Magnet, carries out separating brake with lower magnet magnetic field in the same direction.
Additionally, due to described lower contact assembly, there are two groups of contact part, so can make when circuit is short-circuited and needs separating brake
Become bigger resistance, therefore in the second contact part position, memorial alloy ring is installed, raise in line short contact assembly temperature at present, note
The deformation arm recalling alloy hoop is bent outwardly so that the pressure between the second contact part and lower conducting rod reduces, and beneficially separating brake is at present
Contact assembly can slide along lower conducting rod with relatively low frictional resistance.
Obtained the temperature information outside porcelain shell by temperature sensor, can the current information that detects of combination current transformer,
Judging the working condition of arc-chutes more accurately, separating brake can be carried out timely and accurately when there is fault, it is ensured that electricity consumption sets
Standby safe operation.
The operation principle of the present invention is as follows: when chopper is entered "on" position by gate-dividing state, controller is to electromagnetism iron wire
Circle energising, makes electromagnet coil produce the magnetic field reverse with lower magnet in the same direction with upper Magnet, dynamic iron core upper Magnet suction with
Moving up under the repulsion effect of lower magnet, the lower contact assembly being connected with dynamic iron core by connecting rod is moved up and makes lower contact
Guan Bi is contacted, it is achieved closing a floodgate, electromagnet coil power-off after combined floodgate, dynamic iron core relies on the magneticaction of itself and upper Magnet with upper contact head
It is maintained at settling position.If temperature sensor detects that temperature is too high or the current transformer that is electrically connected with the controller detects
When electric current is close to separating brake setting value, in order to ensure the good contact of upper contact head Yu lower contact, controller controls electromagnet coil and produces
Raw with upper Magnet magnetic field in the same direction, increase dynamic captivation between iron core and upper Magnet, thus increase upper contact head and lower contact it
Between contact pressure, reduce resistance value, it is to avoid upper contact head, lower contact are overheated.When temperature sensor detect temperature too high or
The current transformer being electrically connected with the controller detects when electric current reaches separating brake setting value, or controller receives separating brake order
Time, controller controls electromagnet coil and produces reverse with upper Magnet, and with lower magnet magnetic field in the same direction, dynamic iron core drives lower sets of contacts
Part moves down and realizes sub-switching operation.
Embodiment 2
The present embodiment is compared with Example 1, it is also proposed that improve below: at the second contact part and the lower conducting rod of lower contact assembly
Connect between bottom and have ripple contact tube, and equidistantly form opening in ripple contact tube crooked place, to increase deformation energy
Power.
Owing to contact assembly lower in embodiment 1 is slidably connected on lower conducting rod, when separating brake the first contact part, second touch
Being likely to occur electric spark due to friction between head and lower conducting rod, such contact surface there will be damage, is unfavorable for repeatedly dividing
Close a floodgate.Ripple contact tube, on the premise of inconspicuous generation resistance, plays the effect of shunting, makes the first contact part, the second contact
Electric arc is occurred without, it is ensured that the service life of arc-chutes between portion and lower conducting rod.
Embodiment 3
In conjunction with shown in Fig. 3 to Figure 13, the present embodiment is a kind of vacuum interrupter for chopper, and these arc-chutes are integrated with actuating
Mechanism, concrete structure includes a porcelain shell 52, and described porcelain shell includes the arc-chutes housing of the tubulose of a both ends open
52a, the actuating housing 52c of the upper end closed lower ending opening that is positioned at immediately below arc-chutes housing, and it is integrally attached to institute
State two symmetrically arranged connecting tubes 52b between arc-chutes housing and actuating housing sidewall；The upper and lower side of described connecting tube is
The circular assembling mouth of pipe 5203, the mouth of pipe has been sealedly and fixedly connected capping 523；Described connecting tube upper portion side wall and arc-chutes housing
Form the upper through hole 5204 of bar shaped between sidewall, between described connecting tube lower sides and actuating housing sidewall, form bar shaped
Lower through-hole 5205.
Described arc-chutes housing upper end fixed seal connection has upper cover body 522, described arc-chutes housing lower end fixing seal
Connect and have lower cover 521；In described upper cover body, fixed seal connection has a upper conducting rod 53 through upper cover body, described lower cover
On body, fixed seal connection has a lower conducting rod 51 through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head
531, on described lower conducting rod, slip cap is provided with lower contact assembly 55.
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact 551 and is integrally attached to the socket pipe 552 of lower contact lower end, described socket
Pipe medium position forms the first contact part 5521, and the bottom of described socket pipe forms the second contact part 5523, described set
The position being positioned at the first contact part and the second contact part in adapter circumferentially offers the strip crevice being placed equidistant, each described
First contact part, the second contact part are between two adjacent strip crevices；Described first contact part and the second contact part with
Described lower conducting rod outer wall is slidably matched electrical connection.
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth
5522, described porcelain ring cooperation mouth is provided with two semicircular isolation porcelain rings 57, the two ends of isolation porcelain ring one respectively connects
There is extension 571, be arranged with two semicircular silicon steel blocks 58 outside described isolation porcelain ring, between two described silicon steel blocks, pass through spiral shell
Nail is fixing to be connected, and described silicon steel block inwall forms and isolates porcelain ring and coordinate the porcelain ring notch 581 positioned.
Described second contact part end forms edge 5524 of turning up, described in edge end of turning up upwardly extend, Mei Gesuo
State and in edge of turning up, offer spliced eye 5525；Described socket pipe outer cooperation in the second contact part and porcelain ring is arranged with between mouth
Memorial alloy ring 59, the position of described memorial alloy ring lower end each described spliced eye corresponding is connected with deformation arm 592, often
The bottom of individual deformation arm is connected with the Plug Division 593 coordinating grafting with described spliced eye；Described memorial alloy ring is upper
Position between two described deformation arms has a gap 591；Described memorial alloy ring be clamped in socket pipe outer wall with every
Between the extension of porcelain ring.
Described arc-chutes inner walls position between described upper contact head, lower contact form centring ring respectively
5202, lower centring ring 5201；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a screen
Cover cylinder 54；In described porcelain shell, memory alloy spring 56 is installed between lower centring ring and silicon steel block.
Described actuating housing connection fixed above has upper Magnet 71, described actuating housing inner top to be installed with upper magnet yoke
74, described actuating housing lower end fixed seal connection has lower yoke 72, is fixedly connected with lower magnet 73 below described lower yoke；Institute
State between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core 75 in actuating housing, described dynamic iron core and described silicon steel block it
Between be fixedly linked by two connecting rods being arranged in connecting tube 76.
Described connecting rod lower end is fixedly connected with lower contact 761 by screw, and described connecting rod upper end is fixed by screw
Connect and have top connection 762；The connector 582 coordinating grafting with described top connection, described top connection is formed on described silicon steel block
It is fixedly connected on silicon steel block by screw；Described dynamic iron core upper end forms two and lacks with the connection of lower contact mating shapes
Mouth 751, is connected by screw is fixing between described dynamic iron core and described lower contact.
Described connecting rod reconnects joint, lower contact after loading in connecting tube, and the bore of such connecting tube can do
Must be less, it is beneficial to ensure the intensity that porcelain shell is overall.Each capping of connecting tube end is installed after connecting rod installation again.
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil 7, electromagnet coil and dynamic iron core structure
Become an electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
Claims (9)
1. a chopper, it is characterised in that: include base, be fixedly mounted on the shell of base front upper, fixing connection
Three cases above described base rear portion, are fixedly mounted on the inlet wire seat of each case internal upper part, are fixedly mounted on each
The wire outlet seat at middle part in case, and it is arranged on the arc-chutes that case is interior and is connected with inlet wire seat, wire outlet seat；
Described inlet wire seat, wire outlet seat are connected to copper bar towards the end at chopper rear, and the rearward end of copper bar connects prunus mume (sieb.) sieb.et zucc.
Flower contact；On described case, the position of each copper bar corresponding forms the vestlet covering described copper bar；
Described arc-chutes include a porcelain shell, and described porcelain shell includes the arc-chutes housing of the tubulose of a both ends open, and one
The actuating housing of the individual upper end closed lower ending opening being positioned at immediately below arc-chutes housing, and it is integrally attached to described arc-chutes shell
Two symmetrically arranged connecting tubes between body and actuating housing sidewall；The upper and lower side of described connecting tube is circular assembling pipe
Mouthful, the mouth of pipe has been sealedly and fixedly connected capping；Bar shaped is formed between described connecting tube upper portion side wall and arc-chutes housing sidewall
Upper through hole, form the lower through-hole of bar shaped between described connecting tube lower sides and actuating housing sidewall；
Described arc-chutes housing upper end fixed seal connection has upper cover body, under described arc-chutes housing lower end fixed seal connection has
Lid；In described upper cover body, fixed seal connection has a upper conducting rod through upper cover body, fixing seal on described lower cover
Connect the lower conducting rod having through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head, described lower conducting rod
Upper slip cap is provided with lower contact assembly；
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact and is integrally attached to the socket pipe of lower contact lower end, in the middle part of described socket pipe
Position forms the first contact part, and the bottom of described socket pipe forms the second contact part, and described socket pipe is positioned at first
The position of contact part and the second contact part circumferentially offers the strip crevice being placed equidistant, each described first contact part,
Two contact part are between two adjacent strip crevices；Outside described first contact part and the second contact part are with described lower conducting rod
Wall is slidably matched electrical connection；
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth, described porcelain
Being provided with two semicircular isolation porcelain rings on ring cooperation mouth, the two ends of isolation porcelain ring are connected with extension respectively, described
It is arranged with two semicircular silicon steel blocks outside isolation porcelain ring, connects by screw is fixing between two described silicon steel blocks, described silicon
Bloom inwall form with isolate porcelain ring coordinate location porcelain ring notch；
Described arc-chutes inner walls position between described upper contact head, lower contact form respectively centring ring, under
Centring ring；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a shielding cylinder；Described porcelain
Between lower centring ring and silicon steel block, memory alloy spring is installed in shell；
Described actuating housing connection fixed above has upper Magnet, and described actuating housing inner top is installed with upper magnet yoke, described
The lower end fixed seal connection of actuating housing has lower yoke, is fixedly connected with lower magnet below described lower yoke；Described actuating housing
In between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core, set by two between described dynamic iron core and described silicon steel block
The connecting rod being placed in connecting tube is fixedly linked；
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil, and electromagnet coil constitutes one with dynamic iron core
Electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
2. a kind of chopper as claimed in claim 1, it is characterised in that: described electromagnet coil and the control installed in the enclosure
Device processed is electrically connected by soft wire, and the part that soft wire is positioned at outside shell is helical wire form.
3. a kind of chopper as claimed in claim 1, it is characterised in that: after described porcelain shell uses 3d to print technique molding blank
Fire formation.
4. a kind of chopper as claimed in claim 1, it is characterised in that: described lower contact and described upper contact head are in combined floodgate shape
During state, between described dynamic iron core and upper magnet yoke, there is the spacing of 0.5-2.0mm.
5. a kind of chopper as claimed in claim 1, it is characterised in that: described upper magnet yoke is cylinder, and upper magnet yoke outer wall becomes
Type has external screw thread, and described actuating housing upper inwall forms the female thread that the external screw thread with described upper magnet yoke matches, described
Female thread is that tooth is tall and big in the trapezoidal thread of 3.0mm.
6. a kind of chopper as claimed in claim 1, it is characterised in that: at least one described porcelain shell outer wall is provided with temperature and passes
Sensor, each temperature sensor is electrically connected with the controller by wire；When temperature sensor detects that temperature is higher than setting value,
Controller controls electromagnet coil power and produces and upper Magnet magnetic field in the same direction.
7. a kind of chopper as claimed in claim 1, it is characterised in that: described second contact part end forms flanging
Portion, described in edge end of turning up upwardly extend, each described in turn up and offer spliced eye in edge；It is positioned at outside described socket pipe
It is arranged with memorial alloy ring, described memorial alloy ring lower end each described spliced eye corresponding between two contact part and porcelain ring cooperation mouth
Position be connected with deformation arm, the bottom of each deformation arm is connected with the grafting coordinating grafting with described spliced eye
Portion；On described memorial alloy ring, the position between two described deformation arms has a gap；Described memorial alloy ring presss from both sides
Tightly between the extension of socket pipe outer wall and isolation porcelain ring.
8. a kind of chopper as claimed in claim 1, it is characterised in that: described connecting rod lower end is fixedly connected with by screw
Lower contact, described connecting rod upper end is fixedly connected with top connection by screw；Form and described top connection on described silicon steel block
Coordinating the connector of grafting, described top connection is fixedly connected on silicon steel block by screw；Described dynamic iron core upper end forms two
The individual connection breach with lower contact mating shapes, is connected by screw is fixing between described dynamic iron core and described lower contact.
9. a vacuum interrupter, it is characterised in that: including a porcelain shell, described porcelain shell includes the pipe of a both ends open
The arc-chutes housing of shape, the actuating housing of the upper end closed lower ending opening that is positioned at immediately below arc-chutes housing, and one
Two the symmetrically arranged connecting tubes being connected between described arc-chutes housing and actuating housing sidewall；Described connecting tube upper and lower
End is the circular assembling mouth of pipe, and the mouth of pipe has been sealedly and fixedly connected capping；Described connecting tube upper portion side wall and arc-chutes housing side
Form the upper through hole of bar shaped between wall, between described connecting tube lower sides and actuating housing sidewall, form the lower logical of bar shaped
Hole；
Described arc-chutes housing upper end fixed seal connection has upper cover body, under described arc-chutes housing lower end fixed seal connection has
Lid；In described upper cover body, fixed seal connection has a upper conducting rod through upper cover body, fixing seal on described lower cover
Connect the lower conducting rod having through lower cover；Described upper conducting rod lower end is fixedly connected with upper contact head, described lower conducting rod
Upper slip cap is provided with lower contact assembly；
Described lower conducting rod is fixing with wire outlet seat to be electrically connected, and described upper conducting rod is fixing with inlet wire seat to be electrically connected；
Described lower contact assembly includes lower contact and is integrally attached to the socket pipe of lower contact lower end, in the middle part of described socket pipe
Position forms the first contact part, and the bottom of described socket pipe forms the second contact part, and described socket pipe is positioned at first
The position of contact part and the second contact part circumferentially offers the strip crevice being placed equidistant, each described first contact part,
Two contact part are between two adjacent strip crevices；Outside described first contact part and the second contact part are with described lower conducting rod
Wall is slidably matched electrical connection；
Described socket pipe outer wall position between the first contact part and the second contact part forms porcelain ring and coordinates mouth, described porcelain
Being provided with two semicircular isolation porcelain rings on ring cooperation mouth, the two ends of isolation porcelain ring are connected with extension respectively, described
It is arranged with two semicircular silicon steel blocks outside isolation porcelain ring, connects by screw is fixing between two described silicon steel blocks, described silicon
Bloom inwall form with isolate porcelain ring coordinate location porcelain ring notch；
Described arc-chutes inner walls position between described upper contact head, lower contact form respectively centring ring, under
Centring ring；In described arc-chutes housing, the position between upper centring ring, lower centring ring is provided with a shielding cylinder；Described porcelain
Between lower centring ring and silicon steel block, memory alloy spring is installed in shell；
Described actuating housing connection fixed above has upper Magnet, and described actuating housing inner top is installed with upper magnet yoke, described
The lower end fixed seal connection of actuating housing has lower yoke, is fixedly connected with lower magnet below described lower yoke；Described actuating housing
In between upper magnet yoke, lower yoke, be slidably fitted with dynamic iron core, set by two between described dynamic iron core and described silicon steel block
The connecting rod being placed in connecting tube is fixedly linked；
The position of the outer corresponding dynamic iron core of described actuating housing is provided with electromagnet coil, and electromagnet coil constitutes one with dynamic iron core
Electric magnet, and the height of electromagnet coil is less than the height of dynamic iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512952.0A CN106128886B (en) | 2016-06-28 | 2016-06-28 | A kind of breaker and the vacuum interrupter for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512952.0A CN106128886B (en) | 2016-06-28 | 2016-06-28 | A kind of breaker and the vacuum interrupter for breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN106128886A true CN106128886A (en) | 2016-11-16 |
| CN106128886B CN106128886B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627747A (en) * | 2020-06-29 | 2020-09-04 | 成都彩佳角商贸有限公司 | Vacuum circuit breaker |
| CN113675053A (en) * | 2021-07-30 | 2021-11-19 | 崔子召 | Circuit breaker for power distribution system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664155Y (en) * | 2003-07-10 | 2004-12-15 | 钟林贵 | Magnetic-coupling linked vacuum switch tube |
| US20090160588A1 (en) * | 2006-04-10 | 2009-06-25 | Mitsubishi Electric Corporation | Electromagnetic operating device for switch |
| CN204289246U (en) * | 2014-12-02 | 2015-04-22 | 沈阳工业大学 | A kind of vacuum interrupter of subsidiary operating mechanism |
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2016
- 2016-06-28 CN CN201610512952.0A patent/CN106128886B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664155Y (en) * | 2003-07-10 | 2004-12-15 | 钟林贵 | Magnetic-coupling linked vacuum switch tube |
| US20090160588A1 (en) * | 2006-04-10 | 2009-06-25 | Mitsubishi Electric Corporation | Electromagnetic operating device for switch |
| CN204289246U (en) * | 2014-12-02 | 2015-04-22 | 沈阳工业大学 | A kind of vacuum interrupter of subsidiary operating mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627747A (en) * | 2020-06-29 | 2020-09-04 | 成都彩佳角商贸有限公司 | Vacuum circuit breaker |
| CN113675053A (en) * | 2021-07-30 | 2021-11-19 | 崔子召 | Circuit breaker for power distribution system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106128886B (en) | 2018-06-26 |
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