CN111816500B - Arc extinguishing device of vacuum circuit breaker - Google Patents
Arc extinguishing device of vacuum circuit breaker Download PDFInfo
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- CN111816500B CN111816500B CN202010944044.5A CN202010944044A CN111816500B CN 111816500 B CN111816500 B CN 111816500B CN 202010944044 A CN202010944044 A CN 202010944044A CN 111816500 B CN111816500 B CN 111816500B
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- 230000003068 static effect Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 36
- 238000005192 partition Methods 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 claims 2
- 238000003756 stirring Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 230000009471 action Effects 0.000 description 10
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an arc extinguishing device of a vacuum circuit breaker, which comprises an arc extinguishing chamber, wherein one side of the arc extinguishing chamber is provided with a static contact through a static conducting rod, the other side of the arc extinguishing chamber is provided with a moving contact through a moving conducting rod, and a corrugated sleeve is sleeved on the moving conducting rod in the arc extinguishing chamber; being close to in the arc extinguish chamber the moving contact with the junction of static contact is provided with the arc extinguishing subassembly, the arc extinguishing subassembly is including setting up direction annular on the arc extinguish chamber, the direction annular centers on the girth setting of arc extinguish chamber, install the division board in the direction annular, be provided with the promotion subassembly in the direction annular, the promotion subassembly with move the conducting rod transmission and connect, provide the arc extinguishing effect for the separating brake of sound contact through the arc extinguishing subassembly that sets up between moving contact and static contact and mainly lean on vacuum interrupter to carry out the arc extinguishing and cause the technical problem that arc extinguishing speed is slow, the contact easily damages for solving among the prior art.
Description
Technical Field
The invention relates to the technical field of vacuum circuit breakers, in particular to an arc extinguishing device of a vacuum circuit breaker.
Background
With the technical level of domestic vacuum arc-extinguishing chambers and vacuum circuit breakers becoming mature day by day, the output of the vacuum circuit breakers in China is greatly increased every year, and compared with SF6 circuit breakers, the vacuum circuit breaker has the greatest advantage of no risk of gas leakage and no environmental pollution. Meanwhile, the arc extinguishing device has the advantages of good arc extinguishing performance, long electrical service life, high operation reliability and the like. Therefore, the vacuum circuit breaker is widely applied to various manufacturers and users in various industries due to excellent performance.
Vacuum circuit breakers mainly comprise three major parts: vacuum arc-extinguishing chamber, electromagnetism or spring operating mechanism, support and other parts, the movable contact of vacuum circuit breaker must pass through the drive of operating mechanism and can combine or separate with the stationary contact.
When the moving contact and the static contact are switched off under the action of the operating mechanism, electric arcs are generated between the contacts, steam is volatilized from the surfaces of the contacts at high temperature, a magnetic field is generated when current passes through the contacts due to the fact that the contacts are designed to be in a special shape, and the electric arcs rapidly move along the tangential direction of the surfaces of the contacts under the action of the magnetic field. The metal vapor and charged particles in the arc combustion process are diffused in the vacuum arc extinguishing chamber and condensed and adsorbed.
However, the vacuum circuit breaker in the prior art mainly depends on a vacuum arc-extinguishing chamber to extinguish arc, the structure in the vacuum arc-extinguishing chamber is simple, the arc-extinguishing speed is low, the contacts are easy to damage, and particulate matters generated in the opening process of the moving and fixed contacts are precipitated on the end faces of the moving and fixed contacts, so that the stability of the electrical connection of the moving and fixed contacts after the moving and fixed contacts are switched on is influenced.
Disclosure of Invention
The invention aims to provide an arc extinguishing device of a vacuum circuit breaker, which provides arc extinguishing action for the opening of a moving contact and a fixed contact through an arc extinguishing component arranged between the moving contact and the fixed contact so as to solve the technical problems of low arc extinguishing speed and easy damage of the contacts of the vacuum circuit breaker in the prior art due to the fact that the vacuum circuit breaker mainly relies on a vacuum arc extinguishing chamber to extinguish arc.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
an arc extinguishing device of a vacuum circuit breaker comprises an arc extinguishing chamber, wherein one side of the arc extinguishing chamber is provided with a static contact through a static conducting rod, the other side of the arc extinguishing chamber is provided with a moving contact through a moving conducting rod, and a corrugated sleeve is sleeved on the moving conducting rod in the arc extinguishing chamber;
an arc extinguishing assembly is arranged in the arc extinguishing chamber and close to the joint of the movable contact and the fixed contact, the arc extinguishing assembly comprises a guide ring groove arranged on the arc extinguishing chamber, the guide ring groove is arranged around the perimeter of the arc extinguishing chamber, a partition plate is arranged in the guide ring groove, a pushing assembly is arranged in the guide ring groove, the pushing assembly is in transmission connection with the movable conducting rod, and the pushing assembly pushes the partition plate to move towards the direction close to the joint of the movable contact and the fixed contact;
the partition plate comprises a plurality of superposed partition blades, a rotating ring is rotatably mounted in the guide ring groove, a fixing ring is arranged in the guide ring groove, the plurality of partition blades are mutually superposed between the rotating ring and the fixing ring, a plurality of positioning holes are uniformly distributed on the rotating ring around the side line of the rotating ring, one end of each partition blade is connected with the fixing ring, and the other end of each partition blade is provided with a positioning column which is embedded in the positioning hole;
the separation blade is to the crooked strip arc structure of direction ring groove direction, along with the swivel becket drives the separation blade rotates, keep away from of separation blade the one end of direction ring groove is to being close to move is pressed from both sides tightly to the moving contact direction, the swivel becket is kept away from the eccentric power post that is provided with on a side end face of separating the blade, be provided with on the swivel becket with the reset post that the power post symmetry set up, the power post with the post that resets respectively with the promotion subassembly is connected, the promotion subassembly promotes the power post rotates and makes it makes to be close to separate the blade the moving contact direction presss from both sides tightly rotates, the promotion subassembly promotes the post that resets rotates and makes it to keep away from the separation blade the moving contact direction rotates.
As a preferable scheme of the present invention, a plurality of the separation blades are stacked one on another, the separation blades are arc-shaped, one end of each of the separation blades, which is connected to the fixing ring, is provided with a large head end, one end of each of the separation blades, which is connected to the rotating ring, is provided with a small head end, a guide groove is provided near the large head end, a moving guide post embedded in the guide groove is provided on each of the adjacent separation blades, the guide groove is provided along a moving track of the moving guide post, the guide groove extends from the inside of the guide ring groove in a direction away from the guide ring groove, and the depth of the guide groove decreases progressively from one end near the guide ring groove to one end away from the guide ring groove.
As a preferred embodiment of the present invention, a plurality of guide grooves are disposed on a side end surface of the separation blade close to the fixed contact and the movable contact, and a side end surface of the separation blade having the guide grooves is in frictional contact with the fixed contact and the movable contact.
As a preferred scheme of the present invention, the pushing assembly includes a moving arc groove disposed in the guide ring groove and close to one side end surface of the power column for embedding the power column, a power spring connected to the power column is disposed in the moving arc groove, and a positioning assembly of the power column is disposed on the arc extinguish chamber and close to the moving arc groove;
the reset device is characterized in that a reset arc groove used for embedding the reset column is arranged on one side end face, close to the reset column, in the guide ring groove, a traction rope connected with the reset column is arranged in the reset arc groove, the other end of the traction rope is connected with a winding gear close to the movable conducting rod through penetrating through the reset arc groove, and a rack connected with the winding gear in a meshed mode is arranged on the movable conducting rod.
As a preferable scheme of the present invention, the positioning assembly includes a fixed displacement groove disposed on an inner wall of the arc extinguish chamber and close to the movable arc groove, a positioning groove is penetratingly connected between the fixed displacement groove and the movable arc groove, a movable guide rod is installed in the fixed displacement groove, a telescopic positioning post is disposed on an end surface of the movable guide rod close to the positioning groove, the telescopic positioning post penetrates through the positioning groove and extends into the movable arc groove to contact with the power post, one end of the movable guide rod, which is far away from the fixed displacement groove, extends into the arc extinguish chamber and is rotatably connected with a traction rod, the other end of the traction rod is connected with a driving gear disposed close to the movable conductive rod, and the movable conductive rod is engaged with the driving gear.
As a preferred scheme of the present invention, the movable guide rod is provided with an insertion groove, the telescopic positioning column includes a cylinder installed in the insertion groove, a compression spring for pushing the cylinder to move to the outside of the insertion groove is disposed in the insertion groove, and one end of the power column near the positioning groove is connected to an extension rod for blocking the positioning groove.
As a preferred scheme of the invention, the movable conducting rod extends out of the arc extinguishing chamber and drives the driving gear meshed with the movable conducting rod to rotate in the forward direction, the traction rod is rotatably connected with the driving gear, an elastic piece for pushing the driving gear to move towards the direction of the traction rod is arranged on a rotating shaft of the driving gear, a right-angle toggle block is arranged on the end surface of one side of the driving gear, which is close to the traction rod, and a wedge-shaped groove corresponding to the right-angle toggle block is arranged on the end surface of one side of the traction rod, which is close to the right-angle toggle block;
the wedge groove is an inclined groove, the depth of the wedge groove is increased progressively along the forward rotation direction of the driving gear, a resistance groove channel is arranged on the inclined surface of the wedge groove, the inclined surface end of the right-angle poking block corresponds to the inclined surface end of the wedge groove, and a tooth surface corresponding to the resistance groove channel is arranged on the inclined surface end of the right-angle poking block.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the arc extinguishing component arranged between the moving contact and the static contact provides an arc extinguishing effect for the opening of the moving contact and the static contact, the pushing component pushes the partition plate arranged in the guide ring groove on the arc extinguishing chamber to move to the opening gap between the moving contact and the static contact, and the moving contact and the static contact after opening are separated by the partition plate, so that the problem of attraction after the moving contact and the static contact are opened is avoided, and the safety performance of the opening of the contact is ensured;
(2) the separation plate is formed by superposing and combining a plurality of separation blades, the separation blades rotate to approach to the connection part of the moving contact and the static contact under the thrust action of the rotating ring, an electric arc between the moving contact and the static contact can be separated into small sections through the separation plate formed by superposing the plurality of separation blades, so that the arc extinguishing effect during the opening of the moving contact and the static contact is effectively improved, and the separation blades rotate to approach to the connection part of the moving contact and the static contact so as to play a role in cleaning particulate matters adsorbed on the end faces of the moving contact and the static contact, so that the electric connection stability after the moving contact and the static contact are closed is.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic view of an overall structure of an arc extinguishing apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic view of a stacked structure of the partition boards according to the embodiment of the present invention;
FIG. 3 is a schematic view of a divider vane according to an embodiment of the present invention;
FIG. 4 is a schematic view of a rotating ring according to an embodiment of the present invention;
FIG. 5 is a schematic bottom view of a pushing assembly according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of A in FIG. 1 according to an embodiment of the present invention;
fig. 7 is a schematic top view of the driving gear according to the embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-an arc extinguishing chamber; 2, static contact; 3-moving contact; 4-a guide ring groove; 5-a partition plate; 6-a pushing assembly; 7-moving the conductive rod;
51-a separator blade; 52-a rotating ring; 53-a fixed ring; 54-positioning holes; 55-a positioning column; 56-power column; 57-reset column; 58-an extension rod;
511-big head end; 512-small head end; 513-a guide groove; 514-moving the guide post;
61-moving the arc groove; 62-a power spring; 63-a positioning assembly; 64-a reset arc groove; 65-a hauling rope; 66-wind gear;
631-a positioning moving groove; 632-positioning grooves; 633-moving the guide bar; 634-telescoping positioning posts; 635-tow bar; 636-a drive gear;
6341-insert groove; 6342-column; 6343-compression spring;
6361-right angle block; 6362-wedge groove; 6363-resistance channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides an arc extinguishing device of a vacuum circuit breaker, which comprises an arc extinguishing chamber 1, wherein one side of the arc extinguishing chamber 1 is provided with a static contact 2 through a static conductive rod, the other side of the arc extinguishing chamber 1 is provided with a moving contact 3 through a moving conductive rod 7, a corrugated sleeve is sleeved on the moving conductive rod 7 in the arc extinguishing chamber 1, an arc extinguishing component is arranged in the arc extinguishing chamber 1 and close to the connection part of the moving contact 3 and the static contact 2, the arc extinguishing component comprises a guide ring groove 4 arranged on the arc extinguishing chamber 1, the guide ring groove 4 is arranged around the perimeter of the arc extinguishing chamber 1, a partition plate 5 is arranged in the guide ring groove 4, a pushing component 6 is arranged in the guide ring groove 4, the pushing component 6 is in transmission connection with the moving conductive rod 7.
The pushing component 6 pushes the partition plate 5 arranged in the guide ring groove 4 on the arc extinguish chamber 1 to move towards the opening gap between the moving contact and the static contact, electric arcs between the moving contact and the static contact can be separated into small sections through the partition plate 5, the arc extinguishing effect during opening of the moving contact and the static contact is effectively improved, the moving contact and the static contact after opening are separated through the partition plate 5, the problem of attraction after opening of the moving contact and the static contact is avoided, and the safety performance of opening of the contact is guaranteed.
As shown in fig. 2, 3, 4 and 5, the partition plate 5 of the present invention includes a plurality of stacked partition blades 51, a rotating ring 52 is rotatably installed in the guide ring groove 4, a fixing ring 53 is disposed in the guide ring groove 4, the plurality of partition blades 51 are stacked between the rotating ring 52 and the fixing ring 53, a plurality of positioning holes 54 are uniformly distributed on the rotating ring 52 around a side line of the rotating ring 52, one end of each partition blade 51 is connected to the fixing ring 53, a positioning column 55 is disposed at the other end of each partition blade 51, and the positioning column 55 is embedded in the positioning hole 54.
Wherein, the separation blade 51 is the strip arc structure of bending to direction ring groove 4 direction, along with the rotating ring 52 drives separation blade 51 and rotates, the one end of keeping away from direction ring groove 4 of separation blade 51 is to being close to the tight removal of moving contact 3 direction clamp, the eccentric power post 56 that is provided with on the rotating ring 52 one side terminal surface of keeping away from separation blade 51, be provided with on the rotating ring 52 with the post 57 that resets of power post 56 symmetry setting, power post 56 and reset post 57 are connected with pushing assembly 6 respectively, pushing assembly 6 promotes the rotation of power post 56 and makes separation blade 51 to being close to the tight rotation of moving contact 3 direction clamp, pushing assembly 6 promotes reset post 57 and rotates and makes separation blade 51 to keeping away from moving contact 3 direction and rotate.
In the brake opening process, the movable conducting rod 7 drives the pushing component 6 to move, so that the pushing component 6 drives the power column 56 to generate position deviation, the power column 56 drives the rotating ring 52 to rotate positively, in the process of rotating the rotating ring 52, the positioning holes 54 arranged on the rotating ring 52 ensure stable connection with the positioning columns 55 on the separating blades 51, the number of the positioning holes 54 corresponds to the number of the separating blades 51 one by one, the positioning holes 54 on the rotating ring 52 are connected with the positioning columns 55 on the separating blades 51 one by one, during the forward rotation of the rotary ring 52, the position of the positioning hole 54 is changed, so that the partitioning blades 51 are drawn to move by the positioning hole 54, so that the plurality of separation blades are clamped and rotated towards the direction close to the movable contact 3 under the action of the rotating ring 52, therefore, the moving contact and the static contact are separated, and the problem of attraction after the moving contact and the static contact are separated is solved.
As shown in fig. 1, 5 and 6, the pushing assembly 6 of the present invention includes a moving arc groove 61 for embedding the power column 56, which is disposed in the guide ring groove 4 near one side end surface of the power column 56, a power spring 62 connected to the power column 56 is disposed in the moving arc groove 61, and a positioning assembly 63 for the power column 56 is disposed on the arc extinguish chamber 1 near the moving arc groove 61; before the rotating ring 52 rotates in the forward direction, the power column 56 is fixed in the moving arc groove 61 through the positioning assembly 63, and the power spring 62 is kept in a compressed state, during the forward rotation of the rotating ring 52, firstly the positioning assembly 63 releases the power column 56, and then the power spring 62 pushes the power column 56 to move along the moving arc groove 61, so that the forward rotation of the rotating ring 52 is realized.
The positioning assembly 63 of the present invention includes a fixed displacement groove 631 disposed on an inner wall of the arc extinguish chamber 1 near the moving arc groove 61, a positioning groove 632 is penetratingly connected between the fixed displacement groove 631 and the moving arc groove 61, a moving guide rod 633 is installed in the fixed displacement groove 631, a telescopic positioning post 634 is disposed on an end surface of the moving guide rod 633 near the positioning groove 632, the telescopic positioning post 634 penetrates the positioning groove 632 and extends into the moving arc groove 61 to contact with the power post 56, one end of the moving guide rod 633 far from the fixed displacement groove 631 extends into the arc extinguish chamber 1 and is rotatably connected with a traction rod 635, the other end of the traction rod 635 is connected with a driving gear 636 disposed near the moving conductive rod 7, and the moving conductive rod 7 is engaged.
In the process that the movable conducting rod 7 moves towards the outer side of the arc extinguish chamber 1, the rack arranged close to the driving gear 636 by the movable conducting rod 7 drives the driving gear 636 to rotate, the traction rod 635 connected with the driving gear 636 is driven to rotate by the rotation of the driving gear 636, the other end of the traction rod 635 drives the movable guide rod 633 to move towards the arc extinguish chamber 1, meanwhile, the telescopic positioning column 634 arranged on the movable guide rod 633 contracts towards the direction of the movable guide rod 633, the telescopic positioning column 634 contracts into the positioning moving groove 631 along the positioning groove 632, so that the power column 56 limited by the telescopic positioning column 634 is loosened, the power column 56 moves under the action of the power spring 62 in the moving arc groove 61, so as to drive the rotating ring 52 to rotate, so as to drive one end of a plurality of separating blades 51 connected with the rotating ring 52 to rotate by the forward rotation of the rotating ring 52, so, thereby improving the arc extinguishing effect during opening of the moving and static contacts through the plurality of separating blades 51.
The movable guide rod 633 is provided with an embedded groove 6341, the telescopic positioning column 634 comprises a column 6342 installed in the embedded groove 6341, a compression spring 6343 which pushes the column 6342 to move towards the outside of the embedded groove 6341 is arranged in the embedded groove 6341, one end of the power column 56 close to the positioning groove 632 is connected with an extension rod 58 used for blocking the positioning groove 632, in the forward rotation process of the rotating ring 52, the extension rod 58 is pulled to move by the power column 56, so that the port of the positioning groove 632 is sealed, and the main body 6342 of the telescopic positioning column 634 is prevented from extending into the movable arc groove 61 under the action force of the compression spring 6343.
Since the retractable positioning post 634 of the present invention includes the post 6342 and the compression spring 6343 for pushing the post 6342 to move along the insertion groove 6341, when the moving guide rod 633 moves towards the arc extinguish chamber 1 under the action of the pulling rod 635, the post 6342 is separated from the moving arc groove 61 to move towards the positioning moving groove 631 under the pressure of the inner wall of the positioning groove 632 and the elastic force of the compression spring 6343, thereby facilitating the rotation of the rotating ring 52.
As shown in fig. 7, in addition, the movable conducting rod 7 extends out of the arc extinguish chamber 1 and drives the driving gear 636 engaged with the arc extinguish chamber to rotate in the forward direction, the pulling rod 635 is rotatably connected with the driving gear 636, an elastic member for pushing the driving gear 636 to move towards the pulling rod 635 is arranged on a rotating shaft of the driving gear 636, a right-angle toggle block 6361 is installed on one end face of the driving gear 636 close to the pulling rod 635, and a wedge-shaped groove 6362 corresponding to the right-angle toggle block 6361 is arranged on one end face of the pulling rod 635 close to the right-angle toggle block 6361.
The wedge-shaped groove 6362 is an inclined groove, the depth of the wedge-shaped groove 6362 increases progressively along the forward rotation direction of the drive gear 636, a resistance groove 6363 is arranged on the inclined surface of the wedge-shaped groove 6362, the inclined surface end of the right-angle toggle block 6361 corresponds to the inclined surface end of the wedge-shaped groove 6362, and a tooth surface corresponding to the resistance groove 6363 is arranged on the inclined surface end of the right-angle toggle block 6361.
In the process that the movable conducting rod 7 extends out of the arc extinguish chamber 1 and drives the driving gear 636 to rotate in the forward direction, in the process that the driving gear 636 rotates, the right-angle poking block 6361 on the driving gear 636 is embedded in the wedge-shaped groove 6362 on the traction rod 635, the right-angle edge of the wedge-shaped groove 6362 corresponds to the right-angle poking block 6361, the right-angle edge of the right-angle poking block 6361 pulls the right-angle edge of the wedge-shaped groove 6362 to move in the process that the driving gear 636 rotates, and therefore the traction rod 635 drives the moving guide rod 633 to move in the arc extinguish chamber.
In the process that the movable conducting rod 7 moves into the arc extinguish chamber 1 and drives the driving gear 636 to rotate reversely, after the movable guide rod 633 moves and is positioned along the positioning moving groove 631, the movable conducting rod 7 continues to drive the driving gear 636 to rotate, in order to avoid the movable guide rod 633 from obstructing the rotation of the driving gear 636, for this reason, in the process that the driving gear 636 rotates, the inclined plane of the right-angle shifting block 6361 moves along the inclined plane groove of the wedge groove 6362 and gradually departs from the embedding range of the wedge groove 6362, and the elastic member arranged on the rotating shaft of the driving gear 636 is pressed, after the right-angle shifting block 6361 on the driving gear 636 is in fit connection with the wedge groove 6362 again, the right-angle shifting block 6361 is fixedly embedded in the wedge groove 6362 through the action of the elastic member, so that the traction rod 635 is driven by.
As shown in fig. 1, 5 and 6, a restoring arc groove 64 for embedding the restoring column 57 is provided at one end surface of the guide ring groove 4 adjacent to the restoring column 57, a pulling rope 65 connected to the restoring column 57 is provided in the restoring arc groove 64, the other end of the pulling rope 65 is connected to a winding gear 66 provided adjacent to the movable conductive rod 7 by penetrating through the restoring arc groove 64, and a rack engaged with the winding gear 66 is provided on the movable conductive rod 7.
In the process that the movable conducting rod 7 extends out of the arc extinguish chamber 1 and drives the driving gear 636 to rotate in the forward direction, the winding gear 66 rotates along with the movable conducting rod 7, and the traction rope 65 wound on the winding gear 66 is in a loose state so as to facilitate the rotation of the rotating ring 52; in the process that the movable conducting rod 7 moves into the arc extinguish chamber 1 and drives the driving gear 636 to rotate reversely, the draw bar 635 drives the movable guide rod 633 to be inserted into the fixed displacement groove 631, the telescopic positioning column 634 on the movable guide rod 633 is inserted into the positioning groove 632, a limiting effect is provided through the extension rod 58 connected with the power column, the movable conducting rod 7 drives the winding gear 66 meshed with the movable conducting rod to rotate, the drawing rope 65 is gradually wound on the winding gear 66, the drawing rope 65 is gradually tensioned and drives the resetting column 57 connected with the wire to generate position deviation, the rotating ring 52 is driven by the resetting column 57 to return to the original state, and meanwhile, the power column 56 is driven to return to the original state, so that the telescopic positioning column 634 is inserted into the movable arc groove 61 along the positioning groove 632 to fix the position of the power column 56, and the next movement of the power column 56 is facilitated.
As shown in fig. 2 and 3, a plurality of separating blades 51 of the present invention are stacked one on another, the separating blades 51 are arc-shaped, one end of the separating blade 51 connected with the fixing ring 53 is provided with a large head end 511, one end of the separating blade 51 connected with the rotating ring 52 is provided with a small head end 512, a guide groove 513 is arranged near the large head end 511, a moving guide post 514 embedded in the guide groove 513 is arranged on the adjacent separating blade 51, the guide groove 513 is arranged along the moving track of the moving guide post 514, the guide groove 513 extends from the inside of the guide ring groove 4 to the direction far away from the guide ring groove 4, and the depth of the guide groove 513 decreases progressively from the end near the guide ring groove 4 to the end far away from the guide ring groove.
Therefore, in the process that the separation blade 51 is close to the connection position of the moving contact and the static contact under the action force of the rotating ring 52, the moving guide pillar 514 on the separation blade 51 moves along the guide groove 513 on the adjacent separation blade 51, and the gap between the adjacent separation blade 51 and the vertical falling of the moving contact and the static contact is gradually increased through the guide groove 513 with the gradually decreased groove depth, so that in the process of separating the moving contact and the static contact, the electric arc between the moving contact and the static contact is separated into small sections through the separation plate 5, the arc extinguishing effect during separating the moving contact and the static contact is effectively improved, and the arc extinguishing efficiency is improved.
In addition, a plurality of guide grooves are formed in the side end face of the separation blade 51 close to the fixed contact 2 and the movable contact 3, and the side end face of the separation blade 51 with the guide grooves is in friction contact with the fixed contact 2 and the movable contact 3, so that when the separation blade 51 rotates to be close to the fixed contact or rotates to be far away from the fixed contact, dust condensed on the surface of the fixed contact and the movable contact is scraped through the separation blade 51, and the stability of conductive connection of the fixed contact and the movable contact is improved.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (7)
1. An arc control device of a vacuum circuit breaker, characterized in that: the arc extinguishing chamber comprises an arc extinguishing chamber (1), wherein one side of the arc extinguishing chamber (1) is provided with a static contact (2) through a static conducting rod, the other side of the arc extinguishing chamber (1) is provided with a moving contact (3) through a moving conducting rod (7), and the moving conducting rod (7) in the arc extinguishing chamber (1) is sleeved with a corrugated sleeve;
an arc extinguishing component is arranged in the arc extinguishing chamber (1) and close to the joint of the movable contact (3) and the static contact (2), the arc extinguishing component comprises a guide ring groove (4) arranged on the arc extinguishing chamber (1), the guide ring groove (4) is arranged around the circumference of the arc extinguishing chamber (1), a partition plate (5) is arranged in the guide ring groove (4), a pushing component (6) is arranged in the guide ring groove (4), the pushing component (6) is in transmission connection with the movable conducting rod (7), and the pushing component (6) pushes the partition plate (5) to move towards the direction close to the joint of the movable contact (3) and the static contact (2);
the partition plate (5) comprises a plurality of superposed partition blades (51), a rotating ring (52) is rotatably mounted in the guide ring groove (4), a fixing ring (53) is arranged in the guide ring groove (4), the plurality of partition blades (51) are mutually superposed and arranged between the rotating ring (52) and the fixing ring (53), a plurality of positioning holes (54) are uniformly distributed on the rotating ring (52) around the sideline of the rotating ring (52), one end of each partition blade (51) is connected with the fixing ring (53), the other end of each partition blade (51) is provided with a positioning column (55), and the positioning column (55) is embedded in the positioning hole (54);
separate blade (51) be to the crooked strip arc structure of direction annular (4) direction, along with rotating ring (52) drive separate blade (51) rotate, separating keeping away from of blade (51) the one end of direction annular (4) is to being close to moving contact (3) direction clamping movement, rotating ring (52) are kept away from on a side end face of separating blade (51) eccentric power post (56) that is provided with, be provided with on rotating ring (52) with reset post (57) that power post (56) symmetry set up, power post (56) with reset post (57) respectively with it is connected to promote subassembly (6), it promotes subassembly (6) power post (56) rotate makes to separate blade (51) are to being close to moving contact (3) direction clamping rotation, it promotes subassembly (6) promote reset post (57) rotate makes to separate blade (51) to keeping away from the power post (51) are to being close to moving contact (4) direction clamping rotation The contact (3) rotates in the direction.
2. An arc extinguishing apparatus of a vacuum circuit breaker according to claim 1, wherein: a plurality of the separating blades (51) are arranged in a stacked manner, the separating blades (51) are arc-shaped, one end of the separation blade (51) connected with the fixed ring (53) is provided with a big head end (511), a small head end (512) is arranged at one end of the separation blade (51) connected with the rotating ring (52), a guide groove (513) is arranged near the large head end (511), a moving guide post (514) embedded in the guide groove (513) is arranged on the adjacent separation blade (51), the guide groove (513) is arranged to follow the moving track of the moving guide column (514), the guide groove (513) extends from the inside of the guide ring groove (4) to the direction far away from the guide ring groove (4), and the depth of the guide groove (513) is gradually decreased from one end close to the guide ring groove (4) to one end far away from the guide ring groove (4).
3. An arc extinguishing apparatus of a vacuum circuit breaker according to claim 1, wherein: a plurality of guide grooves are formed in the side end face of the separating blade (51) close to the static contact (2) and the moving contact (3), and the side end face of the separating blade (51) with the guide grooves is in friction contact with the static contact (2) and the moving contact (3).
4. An arc extinguishing apparatus of a vacuum circuit breaker according to claim 1, wherein: the pushing assembly (6) comprises a moving arc groove (61) which is arranged in the guide ring groove (4) and close to one side end face of the power column (56) and used for embedding the power column (56), a power spring (62) connected with the power column (56) is arranged in the moving arc groove (61), and a positioning assembly (63) of the power column (56) is arranged on the arc extinguish chamber (1) close to the moving arc groove (61);
be close to in direction annular (4) one side terminal surface of reset post (57) is provided with and is used for reset post (57) inlays the dress and resets arc groove (64), it connects to be provided with in reset arc groove (64) haulage rope (65) of reset post (57), the other end of haulage rope (65) is through running through reset arc groove (64) are connected with and are close to move winding gear (66) that conducting rod (7) set up, move be provided with on conducting rod (7) with around the rack that winding gear (66) meshing is connected.
5. The arc extinguishing apparatus of the vacuum circuit breaker according to claim 4, wherein: positioning element (63) include be close to on explosion chamber (1) inner wall remove definite displacement groove (631) that arc groove (61) set up, decide displacement groove (631) with through connection has constant head tank (632) between removal arc groove (61), install removal guide arm (633) in definite displacement groove (631), removal guide arm (633) are close to a side end face of constant head tank (632) is provided with flexible reference column (634), flexible reference column (634) run through constant head tank (632) extend to remove in arc groove (61) with power post (56) contact, remove guide arm (633) and keep away from the one end of definite displacement groove (631) extends to in explosion chamber (1) and swivelling joint has traction lever (635), the other end of traction lever (635) is connected with and is close to drive gear (636) that dynamic lever (7) set up, the movable conducting rod (7) is meshed and connected with the driving gear (636).
6. An arc extinguishing apparatus of a vacuum circuit breaker according to claim 5, wherein: be provided with on removal guide arm (633) and inlay groove (6341), flexible reference column (634) is including installing column (6342) in inlaying the inslot (6341), be provided with the promotion in inlaying inslot (6341) column (6342) to inlay compression spring (6343) that the inslot (6341) outside removed, power post (56) are close to the one end of constant head tank (632) is connected with and is used for blockking up extension rod (58) of constant head tank (632).
7. An arc extinguishing apparatus of a vacuum circuit breaker according to claim 6, wherein: the movable conducting rod (7) extends out of the arc extinguish chamber (1) and drives the driving gear (636) in meshed connection with the arc extinguish chamber to rotate in the forward direction, the traction rod (635) is rotationally connected with the driving gear (636), an elastic piece for pushing the driving gear (636) to move towards the direction of the traction rod (635) is arranged on a rotating shaft of the driving gear (636), a right-angle toggle block (6361) is installed on one side end face, close to the traction rod (635), of the driving gear (636), and a wedge-shaped groove (6362) corresponding to the right-angle toggle block (6361) is formed in one side end face, close to the right-angle toggle block (6361), of the traction rod (635);
wedge groove (6362) is the inclined plane groove, just the groove depth of wedge groove (6362) is followed drive gear (636) forward direction of rotation increases progressively be provided with resistance channel (6363) on the inclined plane of wedge groove (6362), the inclined plane end of right angle stirring piece (6361) with the inclined plane end of wedge groove (6362) is corresponding, and be provided with on the inclined plane end of right angle stirring piece (6361) with the corresponding flank of tooth of resistance channel (6363).
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| CN202010944044.5A CN111816500B (en) | 2020-09-10 | 2020-09-10 | Arc extinguishing device of vacuum circuit breaker |
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| CN202010944044.5A CN111816500B (en) | 2020-09-10 | 2020-09-10 | Arc extinguishing device of vacuum circuit breaker |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555260A (en) * | 2021-08-20 | 2021-10-26 | 广东电网有限责任公司 | Arc extinguishing and breaking device |
| CN113985076B (en) * | 2021-10-26 | 2024-01-30 | 西安高压电器研究院股份有限公司 | Arc extinguishing chamber variable-spacing device |
| CN114284895B (en) * | 2022-01-11 | 2024-06-07 | 华科电工工程股份有限公司 | High-voltage switch cabinet with intelligent voice interaction control system |
| CN115881469B (en) * | 2022-12-26 | 2023-07-21 | 浙江阿海珐配电自动化有限公司 | High-voltage AC vacuum circuit breaker |
| CN117133587B (en) * | 2023-10-27 | 2024-01-26 | 河南溪亭电力设备有限公司 | Circuit breaker |
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