CN114628176A - High-pressure direct current contactor arc extinguishing system - Google Patents
High-pressure direct current contactor arc extinguishing system Download PDFInfo
- Publication number
- CN114628176A CN114628176A CN202210270882.8A CN202210270882A CN114628176A CN 114628176 A CN114628176 A CN 114628176A CN 202210270882 A CN202210270882 A CN 202210270882A CN 114628176 A CN114628176 A CN 114628176A
- Authority
- CN
- China
- Prior art keywords
- contact
- permanent magnet
- rack
- sides
- extinguishing system
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 238000010891 electric arc Methods 0.000 claims abstract description 19
- 230000005291 magnetic effect Effects 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000000670 limiting effect Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract description 19
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 24
- 238000000034 method Methods 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to the technical field of direct current contactors, in particular to an arc extinguishing system of a high-pressure direct current contactor, which comprises a static contact, a moving contact, a first permanent magnet, a second permanent magnet, a metal grid and a rotary driver, wherein the static contact is provided with a first current end, a second current end, a first contact and a second contact, the first current end is electrically connected with the first contact, the second current end is electrically connected with the second contact, the moving contact is provided with a third contact and a fourth contact, the third contact is electrically connected with the fourth contact, the metal grid is arranged on the first contact, the third contact and one side of a break opening of the second contact and one side of a break opening of the fourth contact, the first permanent magnet and the second permanent magnet are respectively arranged at the bottoms of the third contact and the fourth contact, the rotary driver is arranged at the bottom of the moving contact, the first permanent magnet and the second permanent magnet which are rotated by the rotary driver can rapidly pull an electric arc to diffuse to the metal grid, thereby rapidly and stably extinguishing the arc.
Description
Technical Field
The invention relates to the technical field of direct current contactors, in particular to an arc extinguishing system of a high-pressure direct current contactor.
Background
The dc contactor is a contactor used in a dc circuit, and is mainly used for controlling a dc circuit (a main circuit, a control circuit, an excitation circuit, and the like). The dc contactor needs to frequently switch a large load current, so it must have a strong arc extinguishing capability, and a flexible contact system and a reliable electromagnetic system.
In the field of new energy application, for example, a pure electric vehicle generally adopts a high-voltage direct-current contactor to be responsible for switching on and off a power battery system, and can switch off the high-voltage battery system when an accident occurs. The electric contact can have discharge phenomenon and produce electric arc in the process from switch-on to disconnection, the production of electric arc can delay the disconnection of circuit, higher electric arc energy can burn the electric contact even, causes the electric contact to melt and weld, and because present direct current contactor all adopts sealed form, can lead to the explosion that catches fire of switching apparatus under the severe condition.
Chinese patent CN201110057695.3 discloses an arc extinguishing system of a non-polar dc contactor, which comprises a moving contact, a static contact, a first permanent magnet, a second permanent magnet and a third permanent magnet; the second permanent magnet is arranged between the first contact and the second contact, the first permanent magnet is arranged on the outer side of the first contact, the third permanent magnet is arranged on the outer side of the second contact, the first permanent magnet, the first contact, the third contact, the second permanent magnet, the second contact, the fourth contact and the third permanent magnet are arranged at intervals, and the adjacent magnetic poles of the first permanent magnet, the second permanent magnet and the third permanent magnet are opposite in polarity. According to the invention, when the electric arc generated between the first contact and the third contact is pulled to one side by the magnetic field formed by the first permanent magnet and the second permanent magnet, the electric arc generated between the second contact and the fourth contact of the moving contact is pulled to the opposite side by the magnetic field formed by the third permanent magnet and the second permanent magnet, so that the arc spraying directions of the electric arcs generated by the two moving contacts are completely opposite.
The arc quenching system cannot rapidly pull the arc away from the side.
Disclosure of Invention
In view of the above, it is necessary to provide an arc extinguishing system for a high-voltage dc contactor in order to solve the problems in the prior art.
In order to solve the problems of the prior art, the invention adopts the technical scheme that:
an arc extinguishing system of a high-pressure direct current contactor comprises a static contact, a moving contact, a first permanent magnet, a second permanent magnet, a metal grid and a rotary driver, wherein the static contact is provided with a first current end, a second current end, a first contact and a second contact, the first current end is electrically connected with the first contact, the second current end is electrically connected with the second contact, the moving contact is provided with a third contact and a fourth contact, the third contact and the fourth contact are electrically connected, when the contactor is attracted, the first contact and the third contact are electrically closed, the second contact and the fourth contact are electrically closed, when the contactor is disconnected, the first contact and the third contact are electrically disconnected, the second contact and the fourth contact are electrically disconnected, the metal grid is arranged at the first contact and the third contact along the horizontal direction and at one side of a disconnection opening of the second contact and the fourth contact, the first permanent magnet and the second permanent magnet are respectively arranged at the bottoms of the third contact and the fourth contact and rotate around the shaft in the horizontal direction, the rotary driver is arranged at the bottom of the moving contact and is provided with an execution part for guiding the two horizontal shafts to rotate, and when the execution part drives the horizontal shafts to rotate, the magnetic fields of the first permanent magnet and the second permanent magnet rotate and pull the electric arc to diffuse to the metal grid sheet.
Preferably, the metal grid sheet is arranged on the back side of the broken openings of the first contact, the third contact and the second contact and the fourth contact along the horizontal direction, and the executing part drives the shafts in the two horizontal directions to reversely rotate towards the outside.
Preferably, the metal grid sheet is arranged on the opposite sides of the breaking openings of the first contact, the third contact and the second contact and the fourth contact along the horizontal direction, and the executing part drives the two horizontal shafts to rotate inwards in the opposite directions.
Preferably, the rotary actuator includes the arrangement frame, first rack, first driven shaft, first integral key shaft and first gear, the moving contact sets up in the arrangement frame along vertical direction, first rack sets up the both sides at the moving contact, first rack extends along vertical direction, the both sides of first rack are provided with first tooth limit and second tooth limit respectively, first driven shaft and first integral key shaft rotate the both sides that set up at first rack with the axial and along the horizontal direction, the coaxial setting of first gear is at the both ends of first driven shaft, the first integral key shaft of both sides runs through the central point of first permanent magnet and second permanent magnet respectively and rather than fixed connection, first tooth limit and second tooth limit mesh with the first driven shaft of both sides respectively, first driven shaft and first gear engagement.
Preferably, during the downward movement of the movable contact, the angular velocity of the first spline shaft is greater than the angular velocity of the first driven shaft.
Preferably, the rotary driver comprises a placement frame, a second rack, a second driven shaft, a second spline shaft, a second gear and a synchronous belt, the moving contact is arranged in the placement frame along the vertical direction, the second rack is arranged on two sides of the moving contact, the second rack extends along the vertical direction, a third tooth edge and a fourth tooth edge are respectively arranged on two sides of the second rack, the second driven shaft and the second spline shaft rotate in the same axial direction and along the horizontal direction and are arranged on two sides of the second rack, the second gear is coaxially arranged at two ends of the second driven shaft, the second spline shafts on two sides respectively penetrate through the central positions of the first permanent magnet and the second permanent magnet and are fixedly connected with the first permanent magnet and the second permanent magnet, the third tooth edge and the fourth tooth edge are respectively meshed with the second gears on two sides, and the second driven shaft and the second spline shaft are connected through the synchronous belt in a synchronous transmission manner.
Preferably, during the downward movement of the movable contact, the angular velocity of the second spline shaft is greater than the angular velocity of the second driven shaft.
Preferably, both sides of the moving contact are provided with connecting lugs extending downwards, and the first rack is fixedly connected with the connecting lugs.
Preferably, both sides of the moving contact are provided with connecting lugs extending downwards, and the second rack is fixedly connected with the connecting lugs.
Preferably, a limit groove extending in the vertical direction is formed in the placing frame, and the first rack is in sliding fit with the limit groove in the vertical direction.
Compared with the prior art, the beneficial effect of this application is:
1. according to the high-voltage arc eliminating device, the first permanent magnet and the second permanent magnet which are rotated by the rotary driver can rapidly pull an arc to diffuse to the metal grid sheet when the static contact and the moving contact are disconnected, so that the high-voltage arc is rapidly and stably eliminated;
2. according to the first embodiment of the application, the metal grid plates are arranged on the back sides of the broken openings of the first contact, the third contact and the second contact and the fourth contact along the horizontal direction, so that the rotating first permanent magnet and the rotating second permanent magnet can pull the electric arc to diffuse to the back sides of the third contact and the fourth contact, and the metal grid plates are used for segmenting and extinguishing the electric arc;
3. in the second embodiment of the application, the metal grid plates are arranged on the opposite sides of the opening of the first contact, the third contact and the second contact and the fourth contact along the horizontal direction, so that the rotating first permanent magnet and the rotating second permanent magnet can pull the arc to diffuse to the opposite sides of the third contact and the fourth contact, and the arc is segmented and extinguished by the metal grid plates;
4. according to the device, the first racks are arranged on two sides of the moving contact, and meanwhile, through the transmission of the first spline shaft and the first gear, the first permanent magnet and the second permanent magnet at the bottoms of the third contact and the fourth contact can reversely rotate towards the outside, so that a rotating magnetic field can rapidly pull electric arcs to diffuse towards the metal grid sheet on the outside;
5. in the process that the moving contact moves downwards, the angular velocity of the first spline shaft is greater than that of the first driven shaft, so that the transmission ratio of the first spline shaft is increased;
6. according to the device, the second racks are arranged on two sides of the moving contact, and meanwhile, the first permanent magnet and the second permanent magnet at the bottoms of the third contact and the fourth contact can reversely rotate towards the inner side through the transmission of the second driven shaft, the second spline shaft, the second gear and the synchronous belt, so that the rotating magnetic field can fast draw the electric arc to diffuse towards the metal grid sheet on the inner side;
7. in the process that the moving contact moves downwards, the angular speed of the second spline shaft is larger than that of the second driven shaft, so that the transmission ratio of the moving contact is increased;
8. the technical problem that this application wants to solve is how first rack installs the both sides at the moving contact. Therefore, the connecting lugs extending downwards are arranged on the two sides of the moving contact, so that the first rack can be fixedly connected with the connecting lugs, and the first rack and the moving contact are connected;
9. the connecting lugs extending downwards are arranged on the two sides of the moving contact, so that the second rack can be fixedly connected with the connecting lugs to connect the second rack and the moving contact;
10. this application is through setting up the spacing groove that extends along vertical direction in the arrangement frame to make first rack and spacing groove along vertical direction sliding fit, rotate with this first permanent magnet of stable drive and second permanent magnet.
Drawings
Fig. 1 is a schematic magnetic circuit diagram of a first embodiment of the arc extinguishing system of the present application;
FIG. 2 is a schematic magnetic circuit diagram of a second embodiment of the arc extinguishing system of the present application;
fig. 3 is a perspective view of a first embodiment of the arc extinguishing system of the present application;
fig. 4 is a perspective view of the internal structure of a first embodiment of the arc extinguishing system of the present application;
fig. 5 is a partial perspective view of the internal structure of the first embodiment of the arc extinguishing system of the present application;
fig. 6 is an exploded perspective view of a first embodiment of the arc extinguishing system of the present application;
fig. 7 is a perspective view of the internal structure of a second embodiment of the arc extinguishing system of the present application;
fig. 8 is a partial perspective view of the internal structure of a second embodiment of the arc extinguishing system of the present application;
fig. 9 is a perspective view of the movable contact of the present application;
fig. 10 is a perspective view of the placement frame of the present application.
The reference numbers in the figures are:
1-a static contact; 1 a-a first current terminal; 1 b-a second current terminal; 1 c-a first contact; 1 d-a second contact; 2-moving contact; 2 a-a third contact; 2 b-a fourth contact; 2 c-engaging lugs; 3-a first permanent magnet; 4-a second permanent magnet; 5-a metal grid sheet; 6 a-a placement frame; 6a 1-limiting groove; 6 b-a first rack; 6b1 — first tooth edge; 6b 2-second tooth flank; 6 c-first driven shaft; 6 d-first spline shaft; 6 e-a first gear; 6 f-second rack; 6f 1-third land; 6f 2-fourth tooth flank; 6 g-a second driven shaft; 6 h-a second spline shaft; 6 i-second gear; 6 j-synchronous belt; 7-a housing; 7 a-a placement chamber; 8-electromagnetic push rod.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1-10, the present application provides:
an arc extinguishing system of a high-pressure direct-current contactor comprises a static contact 1, a moving contact 2, a first permanent magnet 3, a second permanent magnet 4, a metal grid 5 and a rotary driver, wherein the static contact 1 is provided with a first current end 1a, a second current end 1b, a first contact 1c and a second contact 1d, the first current end 1a is electrically connected with the first contact 1c, the second current end 1b is electrically connected with the second contact 1d, the moving contact 2 is provided with a third contact 2a and a fourth contact 2b, the third contact 2a is electrically connected with the fourth contact 2b, when the contactor is attracted, the first contact 1c is electrically closed with the third contact 2a, the second contact 1d is electrically closed with the fourth contact 2b, when the contactor is disconnected, the first contact 1c is electrically disconnected with the third contact 2a, the second contact 1d is electrically disconnected with the fourth contact 2b, the metal grid 5 is horizontally arranged on the first contact 1c and the third contact 2a, and one side of the opening of the second contact 1d and the fourth contact 2b, the first permanent magnet 3 and the second permanent magnet 4 are respectively arranged at the bottom of the third contact 2a and the fourth contact 2b and rotate around a shaft in the horizontal direction, the rotary driver is arranged at the bottom of the moving contact 2, the rotary driver is provided with an execution part for guiding the two shafts in the horizontal direction to rotate, and when the execution part drives the shafts in the horizontal direction to rotate, the magnetic fields of the first permanent magnet 3 and the second permanent magnet 4 rotate and pull the electric arc to diffuse towards the metal grid 5.
Based on the above embodiments, the technical problem to be solved by the present application is how to rapidly and stably extinguish the high voltage arc. Therefore, the first permanent magnet 3 and the second permanent magnet 4 which are rotated by the rotary driver can rapidly pull the electric arc to diffuse to the metal grid sheet 5 when the static contact 1 and the moving contact 2 are disconnected, so that the high-voltage electric arc can be rapidly and stably eliminated;
the arc is elongated into the metal grid 5 by the rotating magnetic field, the metal grid 5 is cut into a plurality of short arcs by the photoelectric beard, so that the initial dielectric strength of the arc gap is improved, and meanwhile, the metal grid 5 (such as a copper grid, a ferromagnetic grid, ceramics and the like) has the functions of enhancing cooling and surface recombination. Breaking a large current (such as a rated current);
when the static contact 1 and the moving contact 2 are closed, the first current end 1a and the first contact 1c are electrically closed, the first contact 1c and the third contact 2a are electrically closed, the fourth contact 2b and the second contact 1d are electrically closed, and the second contact 1d and the second current end 1b are electrically connected, so that current can flow in from the first current end 1a and flow out from the second current end 1 b;
when the static contact 1 and the moving contact 2 are disconnected, two executing parts of the rotary driver can drive the first permanent magnet 3 and the second permanent magnet 4 to rotate, the first permanent magnet 3 and the second permanent magnet 4 can rotate around a shaft in the horizontal direction, and the first permanent magnet 3 and the second permanent magnet 4 are respectively arranged at the bottoms of the third contact 2a and the fourth contact 2b, so that when the shaft in the horizontal direction rotates, the first permanent magnet 3 and the second permanent magnet 4 can rotate, a magnetic field rotates, an electric arc between the static contact 1 and the first permanent magnet 3 is pulled to one side of the metal grid piece 5 under the action of the magnetic field, and the electric arc is segmented by the metal grid piece 5 to extinguish the arc;
the arc extinguishing system further comprises a machine shell 7 and an electromagnetic push rod 8, a mounting cavity 7a for mounting the static contact 1, the moving contact 2, the first permanent magnet 3, the second permanent magnet 4, the metal grid 5 and the rotary driver is arranged in the machine shell 7, the electromagnetic push rod 8 is arranged at the bottom of the mounting cavity 7a, the moving contact 2 is connected with an actuating rod of the electromagnetic push rod 8, the static contact 1 and the moving contact 2 are electrically closed when the electromagnetic push rod 8 is in a power-off state, and the static contact 1 and the moving contact 2 are electrically disconnected when the electromagnetic push rod 8 is in a power-on state.
As shown in fig. 1, further:
the metal grid 5 is arranged on the back side of the disconnection openings of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b along the horizontal direction, and the execution part drives the two horizontal axes to rotate towards the outer side in the opposite directions.
Based on the above-mentioned embodiments, the technical problem that the present application intends to solve is how to rotate the first permanent magnet 3 and the second permanent magnet 4 by the rotary driver to extinguish the arc. For this reason, as a first embodiment of the present application, the present application arranges the metal grid 5 on the back side of the opening of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b along the horizontal direction, when the rotary driver is started, the actuating part of the rotary driver can drive the two horizontal axial directions to rotate towards the outside in the opposite directions, so that the rotating first permanent magnet 3 and the rotating second permanent magnet 4 can draw the arc to diffuse towards the back side of the third contact 2a and the fourth contact 2b, and the metal grid 5 can segment and extinguish the arc.
As shown in fig. 2, further:
the metal grid 5 is arranged on the opposite sides of the opening of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b along the horizontal direction, and the execution part drives the two horizontal shafts to reversely rotate towards the inner side.
Based on the above-mentioned embodiments, the technical problem that the present application intends to solve is how to rotate the first permanent magnet 3 and the second permanent magnet 4 by the rotary driver to extinguish the arc. For this reason, as a second embodiment of the present application, the present application arranges the metal grid 5 on the opposite sides of the opening of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b along the horizontal direction, when the rotary driver is started, the actuating part of the rotary driver can drive the two horizontal axes to rotate reversely to the inner side, so that the rotating first permanent magnet 3 and the second permanent magnet 4 can draw the arc to spread to the opposite sides of the third contact 2a and the fourth contact 2b, thereby the metal grid 5 can segment and extinguish the arc;
in the process, the electric arcs on the two sides enter the two sides of the metal grid sheet and are guided by the magnetic field to be mutually counteracted.
As shown in fig. 4, 5 and 6, further:
the rotary driver comprises a placing frame 6a and a first rack 6b, the movable contact 2 is arranged in the placing frame 6a along the vertical direction, the first rack 6b is arranged on two sides of the movable contact 2, the first rack 6b extends along the vertical direction, two sides of the first rack 6b are respectively provided with a first tooth edge 6b1 and a second tooth edge 6b2, the first driven shaft 6c and the first spline shaft 6d are coaxially arranged on two sides of the first rack 6b along the horizontal direction, the first gear 6e is coaxially arranged on two ends of the first driven shaft 6c, the first spline shafts 6d on two sides respectively penetrate through the central positions of the first permanent magnet 3 and the second permanent magnet 4 and are fixedly connected with the first permanent magnet 3 and the second permanent magnet 4, the first tooth edge 6b1 and the second tooth edge 6b2 are respectively meshed with the first driven shafts 6c on two sides, and the first driven shaft 6c is meshed with the first gear 6 e.
Based on the above embodiments, the technical problem that the present application intends to solve is how to drive the first permanent magnet 3 and the second permanent magnet 4 to reversely rotate outward when the static contact 1 and the moving contact 2 are disconnected. Therefore, the first racks 6b are arranged on two sides of the moving contact 2, and the first spline shaft 6d and the first gear 6e are used for transmission, so that the first permanent magnet 3 and the second permanent magnet 4 at the bottoms of the third contact 2a and the fourth contact 2b can reversely rotate outwards, and a rotating magnetic field can rapidly pull the electric arc to diffuse towards the metal grid 5 on the outer side;
specifically, when the movable contact 2 moves downwards, the first rack 6b moves downwards, and the first tooth edge 6b1 and the second tooth edge 6b2 are respectively engaged with the first gears 6e on two sides, so that the first gears 6e on two sides can drive the two first driven shafts 6c to rotate inwards in the direction of the placing frame 6a, the first spline shafts 6d on two sides penetrate through the second permanent magnet 4 and the metal grid 5 along the horizontal direction, and the first spline shafts 6d on two sides are also engaged with the first gears 6e on two sides, so that the first driven shafts 6c on two sides can rotate outwards in the opposite direction, and further the first permanent magnets 3 and the second permanent magnets 4 on two sides can pull the electric arc outwards.
As shown in fig. 5, further:
in the process that the movable contact 2 moves downwards, the angular velocity of the first spline shaft 6d is greater than that of the first driven shaft 6 c.
Based on the above-described embodiments, the technical problem that the present application intends to solve is how to increase the magnetic field rotation angle of the first permanent magnet 3 and the second permanent magnet 4. For this reason, in the process of moving the movable contact 2 downward, the angular velocity of the first spline shaft 6d is greater than that of the first driven shaft 6c, and then when the first gear 6e rotates by a certain angle, the first driven shaft 6c can rotate for multiple circles, and the transmission ratio can be increased by increasing the diameter of the first gear 6e or decreasing the diameter of the first spline shaft 6 d.
As shown in fig. 7 and 8, further:
the rotary driver comprises a placing frame 6a, a second rack 6f and a second driven shaft 6g, the moving contact 2 is arranged in the placing frame 6a along the vertical direction, the second rack 6f is arranged on two sides of the moving contact 2, the second rack 6f extends along the vertical direction, two sides of the second rack 6f are respectively provided with a third toothed edge 6f1 and a fourth toothed edge 6f2, the second driven shaft 6g and the second toothed shaft 6h are coaxially arranged on two sides of the second rack 6f along the horizontal direction, the second gear 6i is coaxially arranged at two ends of the second driven shaft 6g, the second toothed shafts 6h on two sides respectively penetrate through the central positions of the first permanent magnet 3 and the second permanent magnet 4 and are fixedly connected with the first toothed edge 6f1 and the fourth toothed edge 6f2 are respectively meshed with the second gears 6i on two sides, and the second driven shaft 6g and the second toothed shaft 6h are connected with the synchronous belts 6j in a synchronous transmission mode.
Based on the above embodiments, the technical problem that the present application intends to solve is how to drive the first permanent magnet 3 and the second permanent magnet 4 to reversely rotate inward by the rotary driver when the static contact 1 and the movable contact 2 are disconnected. Therefore, the second racks 6f are arranged on two sides of the moving contact 2, and meanwhile, the first permanent magnet 3 and the second permanent magnet 4 at the bottoms of the third contact 2a and the fourth contact 2b can reversely rotate inwards through the transmission of the second driven shaft 6g, the second spline shaft 6h, the second gear 6i and the synchronous belt 6j, so that the rotating magnetic field can quickly draw the electric arc to diffuse towards the metal grid sheet 5 on the inner side;
specifically, when the static contact 1 and the moving contact 2 are disconnected, the second rack 6f moves downward, the third tooth edge 6f1 and the third tooth edge 6f1 and the inner arcs of the second gears 6i on the two sides make the second driven shafts 6g on the two sides rotate to the inner side in the reverse direction, and the second driven shafts 6g and the second spline shafts 6h are synchronously driven by the synchronous belt 6j, so that the second spline shafts 6h on the two sides can rotate to the inner side in the reverse direction, the first permanent magnets 3 and the second permanent magnets 4 are driven to rotate to the inner side in the reverse direction, and the arc is further pulled to diffuse towards the metal grid 5 on the inner side.
As shown in fig. 8, further:
in the process that the moving contact 2 moves downwards, the angular velocity of the second spline shaft 6h is greater than that of the second driven shaft 6 g.
Based on the above-described embodiments, the technical problem that the present application intends to solve is how to increase the magnetic field rotation angle of the first permanent magnet 3 and the second permanent magnet 4. For this reason, this application is through making moving contact 2 move the in-process downwards, and the angular velocity of second spline shaft 6h is greater than the angular velocity of second driven shaft 6g, and then when second driven shaft 6g is rotating certain angle, second spline shaft 6h can rotate many weeks, and the accessible increases the diameter of second driven shaft 6g, perhaps reduces the diameter of second spline shaft 6h to this increases its drive ratio.
As shown in fig. 9, further:
two sides of the moving contact 2 are provided with connecting lugs 2c extending downwards, and the first rack 6b is fixedly connected with the connecting lugs 2 c.
Based on the above embodiments, the technical problem to be solved by the present application is how to mount the first rack 6b on both sides of the movable contact 2. For this reason, this application is through being provided with downwardly extending's engaging lug 2c in the both sides of moving contact 2 for first rack 6b can with engaging lug 2c fixed connection, with this connection first rack 6b and moving contact 2.
As shown in fig. 9, further:
two sides of the moving contact 2 are provided with connecting lugs 2c extending downwards, and the second rack 6f is fixedly connected with the connecting lugs 2 c.
Based on the above embodiments, the technical problem to be solved by the present application is how to install the second rack 6f on both sides of the movable contact 2. For this reason, this application is through being provided with downwardly extending engaging lug 2c in the both sides of moving contact 2 for second rack 6f can with engaging lug 2c fixed connection, with this connection second rack 6f and moving contact 2.
As shown in fig. 10, further:
a limiting groove 6a1 extending in the vertical direction is arranged in the placing frame 6a, and the first rack 6b is in sliding fit with the limiting groove 6a1 in the vertical direction.
Based on the above-described embodiment, the technical problem that the present application intends to solve is how to stably lift the first rack 6b in the placement frame 6 a. For this reason, the present application stably drives the first permanent magnet 3 and the second permanent magnet 4 to rotate by providing the stopper groove 6a1 extending in the vertical direction in the rack 6a and slidably fitting the first rack 6b with the stopper groove 6a1 in the vertical direction.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An arc extinguishing system of a high-pressure direct-current contactor comprises a fixed contact (1) and a movable contact (2), wherein the fixed contact (1) is provided with a first current end (1a), a second current end (1b), a first contact (1c) and a second contact (1d), the first current end (1a) is electrically connected with the first contact (1c), the second current end (1b) is electrically connected with the second contact (1d), the movable contact (2) is provided with a third contact (2a) and a fourth contact (2b), the third contact (2a) is electrically connected with the fourth contact (2b), when the contactor is absorbed, the first contact (1c) is electrically closed with the third contact (2a), the second contact (1d) is electrically closed with the fourth contact (2b), when the contactor is disconnected, the first contact (1c) is electrically disconnected with the third contact (2a), and the second contact (1d) is electrically disconnected with the fourth contact (2b), the device is characterized by further comprising a first permanent magnet (3), a second permanent magnet (4), a metal grid piece (5) and a rotary driver, wherein the metal grid piece (5) is arranged on one side of a broken opening of the first contact (1c) and the third contact (2a) in the horizontal direction, the second contact (1d) and the fourth contact (2b) are arranged on one side of the broken opening, the first permanent magnet (3) and the second permanent magnet (4) are respectively arranged at the bottoms of the third contact (2a) and the fourth contact (2b) and rotate around a shaft in the horizontal direction, the rotary driver is arranged at the bottom of the movable contact (2), the rotary driver is provided with an execution part for guiding the shafts in the two horizontal directions to rotate, and when the execution part drives the shaft in the horizontal direction to rotate, the magnetic fields of the first permanent magnet (3) and the second permanent magnet (4) rotate and pull the electric arc to diffuse towards the metal grid piece (5).
2. The arc extinguishing system of the high-voltage direct-current contactor according to claim 1, characterized in that the metal grid (5) is horizontally arranged at the back side of the open ends of the first contact (1c) and the third contact (2a) and the second contact (1d) and the fourth contact (2b), and the executing part drives the two horizontally axially opposite outward rotation.
3. An arc extinguishing system for a high-voltage direct-current contactor according to claim 1, characterized in that the metal grid (5) is arranged on the opposite side of the opening of the first contact (1c) and the third contact (2a), and the second contact (1d) and the fourth contact (2b) along the horizontal direction, and the actuator drives the two horizontal shafts to rotate towards the inner side in the opposite direction.
4. The high-pressure direct-current contactor arc extinguishing system according to claim 2, wherein the rotary driver comprises a mounting frame (6a), a first rack (6b), a first driven shaft (6c), a first spline shaft (6d) and a first gear (6e), the movable contact (2) is arranged in the mounting frame (6a) along a vertical direction, the first rack (6b) is arranged on two sides of the movable contact (2), the first rack (6b) extends along the vertical direction, a first tooth edge (6b1) and a second tooth edge (6b2) are respectively arranged on two sides of the first rack (6b), the first driven shaft (6c) and the first spline shaft (6d) are coaxially arranged on two sides of the first rack (6b) along a horizontal direction, the first gear (6e) is coaxially arranged on two ends of the spline shaft of the first driven shaft (6c), and the first spline shafts (6d) on two sides respectively penetrate through the center positions of the first permanent magnet (3) and the second permanent magnet (4) And is fixedly connected with the first driven shaft, the first tooth edge (6b1) and the second tooth edge (6b2) are respectively meshed with the first driven shafts (6c) at two sides, and the first driven shafts (6c) are meshed with the first gear (6 e).
5. An arc extinguishing system of a high-pressure direct-current contactor according to claim 4, characterized in that during the downward movement of the movable contact (2), the angular velocity of the first spline shaft (6d) is greater than the angular velocity of the first driven shaft (6 c).
6. The arc extinguishing system of the high-pressure direct-current contactor according to claim 3, wherein the rotary driver comprises a placing frame (6a), a second rack (6f), a second driven shaft (6g), a second spline shaft (6h), a second gear (6i) and a synchronous belt (6j), the movable contact (2) is arranged in the placing frame (6a) along the vertical direction, the second rack (6f) is arranged on two sides of the movable contact (2), the second rack (6f) extends along the vertical direction, a third toothed edge (6f1) and a fourth toothed edge (6f2) are respectively arranged on two sides of the second rack (6f), the second driven shaft (6g) and the second spline shaft (6h) are coaxially arranged on two sides of the second rack (6f) and rotate along the horizontal direction, the second gear (6i) is coaxially arranged on two ends of the second driven shaft (6g), the second spline shafts (6h) on the two sides respectively penetrate through the central positions of the first permanent magnet (3) and the second permanent magnet (4) and are fixedly connected with the first permanent magnet and the second permanent magnet, the third tooth edge (6f1) and the fourth tooth edge (6f2) are respectively meshed with the second gears (6i) on the two sides, and the second driven shaft (6g) and the second spline shafts (6h) are connected through synchronous belts (6j) in a synchronous transmission mode.
7. An arc extinguishing system of a high-pressure direct current contactor according to claim 6, characterized in that the angular velocity of the second spline shaft (6h) is greater than the angular velocity of the second driven shaft (6g) during the downward movement of the movable contact (2).
8. An arc extinguishing system of a high-voltage direct-current contactor according to claim 4 or 5, characterized in that the moving contact (2) is provided with downwardly extending connecting lugs (2c) at two sides, and the first rack (6b) is fixedly connected with the connecting lugs (2 c).
9. An arc extinguishing system of a high-voltage direct-current contactor according to claim 4 or 5, characterized in that the moving contact (2) is provided with downwardly extending connecting lugs (2c) at both sides, and the second rack (6f) is fixedly connected with the connecting lugs (2 c).
10. An arc extinguishing system for a high-voltage direct-current contactor according to claim 4 or 5, characterized in that a limiting groove (6a1) extending in the vertical direction is arranged in the mounting rack (6a), and the first rack (6b) is in sliding fit with the limiting groove (6a1) in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270882.8A CN114628176B (en) | 2022-03-18 | 2022-03-18 | Arc extinguishing system of high-pressure direct-current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270882.8A CN114628176B (en) | 2022-03-18 | 2022-03-18 | Arc extinguishing system of high-pressure direct-current contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114628176A true CN114628176A (en) | 2022-06-14 |
| CN114628176B CN114628176B (en) | 2023-12-08 |
Family
ID=81902012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210270882.8A Active CN114628176B (en) | 2022-03-18 | 2022-03-18 | Arc extinguishing system of high-pressure direct-current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114628176B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN102592910A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Small-current magnetic blast arc quenching device for DC (direct current) circuit breaker on basis of permanent magnetic circuit conversion method |
| US20120280772A1 (en) * | 2010-02-26 | 2012-11-08 | Mitsubishi Electric Corporation | Electric current switching apparatus |
| CN106597267A (en) * | 2016-11-15 | 2017-04-26 | 西安交通大学 | Uniform magnetic field generation and control system and method for vacuum arc experiment |
| CN206564205U (en) * | 2017-04-01 | 2017-10-17 | 蚌埠市双环电子集团股份有限公司 | A kind of D.C. contactor is non-to wait wall thickness arc extinguishing storehouse |
| CN209343975U (en) * | 2019-01-25 | 2019-09-03 | 浙江奔一电气有限公司 | A kind of moving contact component for rotary switch |
| CN212783154U (en) * | 2020-09-30 | 2021-03-23 | 浙江奔一电气有限公司 | Arc extinguishing structure of rotary isolating switch |
-
2022
- 2022-03-18 CN CN202210270882.8A patent/CN114628176B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120280772A1 (en) * | 2010-02-26 | 2012-11-08 | Mitsubishi Electric Corporation | Electric current switching apparatus |
| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN102592910A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Small-current magnetic blast arc quenching device for DC (direct current) circuit breaker on basis of permanent magnetic circuit conversion method |
| CN106597267A (en) * | 2016-11-15 | 2017-04-26 | 西安交通大学 | Uniform magnetic field generation and control system and method for vacuum arc experiment |
| CN206564205U (en) * | 2017-04-01 | 2017-10-17 | 蚌埠市双环电子集团股份有限公司 | A kind of D.C. contactor is non-to wait wall thickness arc extinguishing storehouse |
| CN209343975U (en) * | 2019-01-25 | 2019-09-03 | 浙江奔一电气有限公司 | A kind of moving contact component for rotary switch |
| CN212783154U (en) * | 2020-09-30 | 2021-03-23 | 浙江奔一电气有限公司 | Arc extinguishing structure of rotary isolating switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114628176B (en) | 2023-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0801798B1 (en) | Sealed relay device | |
| JP6884923B2 (en) | Electrical contact system | |
| US11361914B2 (en) | Electrical contactor system | |
| US9484169B2 (en) | Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts | |
| CN114628176A (en) | High-pressure direct current contactor arc extinguishing system | |
| CN104517785B (en) | A kind of permanent magnetic drive breaker | |
| CN214848359U (en) | Combined circuit breaker operating mechanism for ultra-fast opening | |
| CN113257641B (en) | Ultra-fast opening circuit breaker adopting combined operating mechanism | |
| CN214848360U (en) | Ultra-fast opening circuit breaker adopting combined operating mechanism | |
| CN113257640B (en) | Duplex circuit breaker | |
| EP3631829B1 (en) | Electrical contact system | |
| CN213815895U (en) | Arc control device and circuit breaker | |
| CN110676114A (en) | Be used for automatic circuit breaker of distribution network | |
| CN113257644B (en) | Combined circuit breaker operating mechanism for ultra-fast opening | |
| CN113782393B (en) | Follow-up permanent magnetic field arc extinguishing mechanism in double-breakpoint direct-acting contactor | |
| CN219958906U (en) | Novel circuit breaker with contact conducting structure | |
| CN216902700U (en) | Magnetic system holding structure of switch | |
| CN114582644A (en) | Arc control device and circuit breaker | |
| CN203250655U (en) | Isolation reversing switch | |
| CN220290696U (en) | Vacuum interrupter and vacuum circuit breaker of 40.5KV | |
| CN214068633U (en) | Arc extinguishing device, switch and lightning arrester | |
| CN219350124U (en) | Circuit breaker structure with high breaking capacity | |
| TWI677894B (en) | Relay capable of withstanding high voltage and large current | |
| CN104485265B (en) | A kind of permanent magnetic drive breaker | |
| KR20240010021A (en) | Automotive contactors, vehicle charging and power distribution systems, charging piles, and vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |