CN114628176B - Arc extinguishing system of high-pressure direct-current contactor - Google Patents
Arc extinguishing system of high-pressure direct-current contactor Download PDFInfo
- Publication number
- CN114628176B CN114628176B CN202210270882.8A CN202210270882A CN114628176B CN 114628176 B CN114628176 B CN 114628176B CN 202210270882 A CN202210270882 A CN 202210270882A CN 114628176 B CN114628176 B CN 114628176B
- Authority
- CN
- China
- Prior art keywords
- contact
- permanent magnet
- sides
- rack
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 238000010891 electric arc Methods 0.000 claims description 19
- 230000005291 magnetic effect Effects 0.000 claims description 17
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 6
- 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 22
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity 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
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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 application relates to the technical field of direct current contactors, in particular to a high-pressure direct current contactor arc extinguishing system which comprises a fixed contact, a moving contact, a first permanent magnet, a second permanent magnet, a metal grid sheet and a rotary driver.
Description
Technical Field
The application 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 exciting circuit, etc.). The dc contactor needs to frequently switch on and off a large load current, so that it must have a strong arc extinguishing capability, and also has 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 unexpected occurs. The electric contact has discharge phenomenon and generates electric arc in the process from on to off, the generation of the electric arc can delay the on-off of a circuit, the electric contact can be burnt even by higher electric arc energy, so that the electric contact is welded, and the current direct current contactor adopts a sealing mode, so that the ignition and explosion of a switching electric appliance can be caused under serious conditions.
Chinese patent CN201110057695.3 discloses an arc extinguishing system of a non-polar dc contactor, the system comprising a moving contact, a fixed contact, a first permanent magnet, a second permanent magnet and a third permanent magnet; the middle of the first contact and the second contact is provided with a second permanent magnet, the outer side of the first contact is provided with a first permanent magnet, the outer side of the second contact is provided with a third 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 in a space, and the adjacent magnetic poles of the first permanent magnet, the second permanent magnet and the third permanent magnet are opposite in polarity. When the magnetic field formed by the first permanent magnet and the second permanent magnet pulls the arc generated between the first contact and the third contact to one side, the magnetic field formed by the third permanent magnet and the second permanent magnet pulls the arc generated between the second contact and the fourth contact of the moving contact to the opposite side, so that the arc spraying directions of the arcs generated by the two moving contacts are completely opposite.
The arc extinguishing system cannot rapidly pull the arc to the opposite side.
Disclosure of Invention
Based on this, it is necessary to provide a high-voltage dc contactor arc extinguishing system in view of the prior art.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the utility model provides a high pressure direct current contactor arc extinguishing system, includes static contact, moving contact, first permanent magnet, second permanent magnet, metal bars piece and rotary actuator, the static contact has first current end, second current end, first contact and second contact, and first current end and first contact electricity are connected, and second current end and second contact electricity are connected, the moving contact has third contact and fourth contact, and third contact and fourth contact electric connection, when the contactor is inhaled, first contact and third contact electric closure, second contact and fourth contact electric closure, when the contactor is disconnected, first contact and third contact electric disconnection, second contact and fourth contact electric disconnection, and the metal bars piece sets up in first contact and third contact along the horizontal direction to and the one side of the break-off mouth of second contact and fourth contact, and first permanent magnet and second permanent magnet set up respectively in the bottom of third contact and fourth contact and rotate with the axle around the horizontal direction, rotary actuator sets up in the bottom of moving contact, and rotary actuator has the permanent magnet that carries out the axial execution horizontal direction of two horizontal direction of guide axle parts of rotation, and the permanent magnet carries out the axial extension of first permanent magnet when the rotation of horizontal direction, and the rotary actuator carries out the axial extension of the metal bars piece.
Preferably, the metal grid sheet is arranged on the back sides of the broken openings of the first contact and the third contact and the second contact and the fourth contact along the horizontal direction, and the executing part drives the shafts of the two horizontal directions to reversely rotate outwards.
Preferably, the metal grid plate is arranged on opposite sides of the broken openings of the first contact and 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 inner side.
Preferably, the rotary driver comprises an arranging frame, a first rack, a first driven shaft, a first spline shaft and a first gear, wherein the moving contact is arranged in the arranging frame along the vertical direction, the first rack is arranged on two sides of the moving contact, the first rack extends along the vertical direction, two sides of the first rack are respectively provided with a first tooth edge and a second tooth edge, the first driven shaft and the first spline shaft are coaxially arranged on two sides of the first rack in a rotating manner along the horizontal direction, the first gear is coaxially arranged at two ends of the first driven shaft, the first spline shafts on the two sides penetrate through the central positions of the first permanent magnet and the second permanent magnet respectively and are fixedly connected with the first permanent magnet, the first tooth edges and the second tooth edges are meshed with the first gears on the two sides respectively, and the first spline shaft is meshed with the first gear.
Preferably, in the process of downward movement of the moving contact, the angular speed of the first spline shaft is greater than the angular speed of the first driven shaft.
Preferably, the rotary driver comprises an arrangement frame, a second rack, a second driven shaft, a second spline shaft, a second gear and a synchronous belt, wherein the moving contact is arranged in the arrangement 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 are coaxially arranged on two sides of the second rack in a rotating manner along the horizontal direction, the second gear is coaxially arranged at two ends of the second driven shaft, the second spline shafts on two sides penetrate through the central positions of the first permanent magnet and the second permanent magnet respectively and are fixedly connected with the central positions of the first permanent magnet, the third tooth edge and the fourth tooth edge are meshed with the second gear on two sides respectively, and the second driven shaft and the second spline shaft are synchronously connected through the synchronous belt.
Preferably, in the downward movement process of the moving contact, the angular speed of the second spline shaft is greater than the angular speed of the second driven shaft.
Preferably, the two sides of the moving contact are provided with connecting lugs extending downwards, and the first rack is fixedly connected with the connecting lugs.
Preferably, the two 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 limiting groove extending along the vertical direction is formed in the mounting frame, and the first rack is in sliding fit with the limiting groove along the vertical direction.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, through the first permanent magnet and the second permanent magnet which are rotated by the rotary driver, when the fixed contact and the movable contact are disconnected, the rotating first permanent magnet and the rotating second permanent magnet can rapidly pull an electric arc to diffuse to the metal grid plate, so that the high-voltage electric 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 and the third contact and the second contact and the fourth contact along the horizontal direction, so that the rotating first permanent magnet and the second permanent magnet can draw an electric arc to diffuse to the back sides of the third contact and the fourth contact, and the metal grid plates segment and extinguish the electric arc;
3. according to the second embodiment of the application, the metal grid plates are arranged on the opposite sides of the broken openings of the first contact and the third contact and the second contact and the fourth contact along the horizontal direction, so that the rotating first permanent magnet and the second permanent magnet can draw an electric arc to diffuse to the opposite sides of the third contact and the fourth contact, and the metal grid plates segment and extinguish the electric arc;
4. the first racks are arranged on two sides of the moving contact, and simultaneously, the first racks are driven by the first spline shaft and the first gear, and the first permanent magnet and the second permanent magnet at the bottoms of the third contact and the fourth contact can reversely rotate outwards, so that a rotating magnetic field rapidly pulls an electric arc to spread on a metal grid plate outwards;
5. according to the application, in the downward moving process of the moving contact, the angular speed of the first spline shaft is greater than that of the first driven shaft, so that the transmission ratio of the moving contact is increased;
6. the second racks are arranged on two sides of the moving contact, and meanwhile, the second driven shaft, the second spline shaft, the second gear and the synchronous belt are used for transmission, so that the first permanent magnet and the second permanent magnet at the bottoms of the third contact and the fourth contact can reversely rotate inwards, and further, a rotating magnetic field can quickly pull an electric arc to diffuse to the metal grid sheet at the inner side;
7. according to the application, in the downward moving process of the moving contact, the angular speed of the second spline shaft is greater than that of the second driven shaft, so that the transmission ratio of the moving contact is increased;
8. the application aims to solve the technical problem of how to install the first racks on two sides of 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. according to the application, 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, and the second rack and the moving contact are connected;
10. according to the application, the limiting groove extending along the vertical direction is arranged in the placement frame, and the first rack is in sliding fit with the limiting groove along the vertical direction, so that the first permanent magnet and the second permanent magnet are stably driven to rotate.
Drawings
Fig. 1 is a schematic magnetic circuit diagram of a first embodiment of an 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 an internal structure of a first embodiment of the arc extinguishing system of the present application;
fig. 5 is a partial perspective view of an internal structure of a 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 an internal structure of a second embodiment of the arc extinguishing system of the present application;
fig. 8 is a partial perspective view of an internal structure of a second embodiment of the arc extinguishing system of the present application;
fig. 9 is a perspective view of a moving contact of the present application;
fig. 10 is a perspective view of the mounting rack of the present application.
The reference numerals in the figures are:
1-a fixed contact; 1 a-a first current terminal; 1 b-a second current terminal; 1 c-a first contact; 1 d-a second contact; 2-a moving contact; 2 a-a third contact; 2 b-fourth contacts; 2 c-connecting lugs; 3-a first permanent magnet; 4-a second permanent magnet; 5-metal grid plates; 6 a-placing a frame; 6 b-a first rack; 6b 1-a first tooth edge; 6b 2-a second tooth edge; 6 c-a first driven shaft; 6 d-a first spline shaft; 6 e-a first gear; 6 f-a second rack; 6f 1-third tooth edge; 6f 2-fourth tooth edge; 6 g-a second driven shaft; 6 h-a second spline shaft; 6 i-a second gear; 6 j-synchronous belt; 7-a shell; 7 a-a placement cavity; 8-electromagnetic push rod.
Detailed Description
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
As shown in fig. 1-10, the present application provides:
the high-pressure direct current contactor arc extinguishing system 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 and the fourth contact 2b are electrically connected, when the contactor is in suction, the first contact 1c is electrically closed with the third contact 2a, the second contact 1d is electrically closed with the fourth contact 2b, and when the contactor is in disconnection, the first contact 1c and the third contact 2a are electrically disconnected, the second contact 1d and the fourth contact 2b are electrically disconnected, the metal grid 5 is arranged on one side of the disconnected 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, the first permanent magnet 3 and the second permanent magnet 4 are respectively arranged at the bottom of the third contact 2a and the bottom of the fourth contact 2b and rotate around the axis along the horizontal direction, the rotary driver is arranged at the bottom of the movable contact 2 and is provided with an executing part for guiding the rotation of the axes along the two horizontal directions, and when the executing part drives the axis along the horizontal direction to rotate, the magnetic fields of the first permanent magnet 3 and the second permanent magnet 4 rotate and draw the electric arc to diffuse to the metal grid 5.
Based on the above embodiments, the technical problem to be solved by the present application is how to quickly and stably eliminate high-voltage arc. Therefore, when the fixed contact 1 and the movable contact 2 are disconnected, the first permanent magnet 3 and the second permanent magnet 4 rotated by the rotary driver can rapidly pull the electric arc to spread to the metal grid 5, so that the high-voltage electric arc is rapidly and stably eliminated;
the arc is elongated into the metal grid 5 by the rotating magnetic field, the metal grid 5 is a multi-segment short arc of the photoelectric Hu Qiege, so that the initial dielectric strength of the arc gap is improved, and meanwhile, the metal grid 5 (such as copper grid, ferromagnetic grid, ceramic and the like) has the effect of enhancing cooling and surface recombination. Breaking large current (such as rated current);
when the fixed contact 1 and the movable 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 fixed contact 1 and the movable contact 2 are disconnected, the two execution 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 the horizontal axis, 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 horizontal axis rotates, the first permanent magnet 3 and the second permanent magnet 4 can rotate, thereby rotating a magnetic field, and an electric arc between the fixed contact 1 and the first permanent magnet 3 is pulled to one side of the metal grid 5 under the action of the magnetic field, and the metal grid 5 is used for sectioning the electric arc;
the arc extinguishing system further comprises a shell 7 and an electromagnetic push rod 8, wherein a placing cavity 7a for placing the fixed 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 shell 7, the electromagnetic push rod 8 is arranged at the bottom of the placing cavity 7a, the moving contact 2 is connected with an actuating rod of the electromagnetic push rod 8, the fixed contact 1 and the moving contact 2 are electrically closed in an electromagnetic push rod 8 outage state, and the fixed contact 1 and the moving contact 2 are electrically disconnected in an electromagnetic push rod 8 outage state.
As shown in fig. 1, further:
the metal grid 5 is arranged on the back side of the broken 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 executing part drives the two shafts in the horizontal direction to reversely rotate outwards.
Based on the above embodiment, the technical problem to be solved by the present application is how the rotary driver rotates the first permanent magnet 3 and the second permanent magnet 4 to extinguish arc. For this reason, as a first embodiment of the present application, the present application is configured such that the metal grid 5 is disposed on the opposite sides of the open ends of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b in the horizontal direction, and when the rotary actuator is started, the actuator can rotate the axes of the two horizontal directions to the outside in the opposite directions, and further the rotating first permanent magnet 3 and 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 arc is segmented and extinguished by the metal grid 5.
As shown in fig. 2, further:
the metal grid 5 is arranged on the opposite sides of the broken 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 executing part drives the two shafts in the horizontal direction to reversely rotate towards the inner side.
Based on the above embodiment, the technical problem to be solved by the present application is how the rotary driver rotates the first permanent magnet 3 and the second permanent magnet 4 to extinguish arc. For this reason, as a second embodiment of the present application, the present application is configured such that the metal grid 5 is disposed on the opposite sides of the broken openings of the first contact 1c and the third contact 2a, and the second contact 1d and the fourth contact 2b in the horizontal direction, and when the rotary actuator is started, the actuator thereof can drive the axes of the two horizontal directions to rotate reversely to the inside, thereby enabling the rotating first permanent magnet 3 and second permanent magnet 4 to pull the arc to spread to the opposite sides of the third contact 2a and the fourth contact 2b, and thus the arc is segmented and extinguished by the metal grid 5;
in this process, the arcs on both sides enter both sides of the metal grid sheet and are guided by the magnetic field to cancel each other out.
As shown in fig. 4, 5 and 6, further:
the rotary driver comprises a placement frame 6a, a first rack 6b, a first driven shaft 6c, a first spline shaft 6d and a first gear 6e, wherein the movable contact 2 is arranged in the placement 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, the two sides of the first rack 6b are respectively provided with a first toothed edge 6b1 and a second toothed edge 6b2, the first driven shaft 6c and the first spline shaft 6d are coaxially arranged on two sides of the first rack 6b in a rotating manner along the horizontal direction, the first gear 6e is coaxially arranged at two ends of the first driven shaft 6c, the first spline shafts 6d on two sides penetrate through the central positions of the first permanent magnet 3 and the second permanent magnet 4 respectively and are fixedly connected with the first permanent magnet, the first toothed edge 6b1 and the second toothed edge 6b2 are meshed with the first gear 6e on two sides respectively, and the first spline shaft 6d is meshed with the first gear 6 e.
Based on the above embodiment, the technical problem to be solved by the present application is how to drive the first permanent magnet 3 and the second permanent magnet 4 to rotate reversely and outwards when the fixed contact 1 and the moving contact 2 are disconnected by the rotary driver. Therefore, the first racks 6b are arranged on two sides of the movable contact 2, and simultaneously, the first racks are driven by the first spline shaft 6d and the first gear 6e, and 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, so that a rotating magnetic field rapidly pulls an electric arc to spread on the outwards metal grid 5;
specifically, when the moving contact 2 moves downward, the first rack 6b moves downward, and the first toothed edge 6b1 and the second toothed edge 6b2 are respectively meshed 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 placement frame 6a, the first spline shafts 6d on two sides penetrate through the second permanent magnets 4 and the metal grid 5 in the horizontal direction, and meanwhile, the first spline shafts 6d on two sides are meshed with the first gears 6e on two sides, so that the first driven shafts 6c on two sides can rotate outwards reversely, and the first permanent magnets 3 and the second permanent magnets 4 on two sides can draw electric arcs outwards.
As shown in fig. 5, further:
in the downward movement of the moving contact 2, the angular velocity of the first spline shaft 6d is greater than the angular velocity of the first driven shaft 6 c.
Based on the above-described embodiments, the technical problem to be solved by the present application 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 present application, by making the angular velocity of the first spline shaft 6d larger than the angular velocity of the first driven shaft 6c during the downward movement of the movable contact 2, and thus when the first gear 6e rotates by a certain angle, the first driven shaft 6c can rotate for a plurality of turns, 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 placement 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, wherein the moving contact 2 is arranged in the placement 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, a third tooth edge 6f1 and a fourth tooth 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 in a rotating manner 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 two sides penetrate through the central positions of the first permanent magnet 3 and the second permanent magnet 4 respectively and are fixedly connected with the second gear 6i on two sides, the third tooth edge 6f1 and the fourth tooth edge 6f2 are respectively meshed with the second gear 6i on two sides, and the second driven shaft 6g and the second spline shaft 6h are synchronously connected through the synchronous belt 6 j.
Based on the above embodiment, the technical problem to be solved by the present application is how to drive the first permanent magnet 3 and the second permanent magnet 4 to rotate reversely and inwards when the fixed contact 1 and the moving contact 2 are disconnected by the rotary driver. Therefore, the application is arranged at two sides of the movable contact 2 through the second racks 6f, and simultaneously, 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 pull the electric arc to diffuse to the metal grid 5 at the inner side;
specifically, when the fixed contact 1 and the moving contact 2 are disconnected, the second rack 6f moves downwards, and the third tooth edge 6f1 are in inner arc with the second gears 6i on two sides, so that the second driven shafts 6g on two sides rotate inwards in opposite directions, and the second driven shafts 6g and the second spline shafts 6h are synchronously driven through the synchronous belt 6j, so that the second spline shafts 6h on two sides can rotate inwards in opposite directions, thereby driving the first permanent magnets 3 and the second permanent magnets 4 to rotate inwards in opposite directions, and further pulling the electric arcs to spread to the metal grid 5 on the inner sides.
As shown in fig. 8, further:
in the downward movement process of the moving contact 2, the angular speed of the second spline shaft 6h is greater than the angular speed of the second driven shaft 6 g.
Based on the above-described embodiments, the technical problem to be solved by the present application is how to increase the magnetic field rotation angle of the first permanent magnet 3 and the second permanent magnet 4. Therefore, in the process of downwards moving the movable contact 2, the angular speed of the second spline shaft 6h is larger than the angular speed of the second driven shaft 6g, so that when the second driven shaft 6g rotates for a certain angle, the second spline shaft 6h can rotate for a plurality of circles, and the transmission ratio of the movable contact can be increased by increasing the diameter of the second driven shaft 6g or reducing the diameter of the second spline shaft 6 h.
As shown in fig. 9, further:
the two sides of the moving contact 2 are provided with connecting lugs 2c which extend downwards, and the first racks 6b are fixedly connected with the connecting lugs 2 c.
Based on the above embodiment, the technical problem to be solved by the present application is how the first racks 6b are mounted on both sides of the moving contact 2. For this purpose, the application enables the first rack 6b to be fixedly connected with the connecting lug 2c by arranging the connecting lugs 2c extending downwards at the two sides of the moving contact 2, thereby connecting the first rack 6b with the moving contact 2.
As shown in fig. 9, further:
the two sides of the moving contact 2 are provided with connecting lugs 2c which extend downwards, and the second racks 6f are fixedly connected with the connecting lugs 2 c.
Based on the above embodiment, the technical problem to be solved by the present application is how the second racks 6f are mounted on both sides of the moving contact 2. For this purpose, the application enables the second rack 6f to be fixedly connected with the connecting lug 2c by arranging the connecting lugs 2c extending downwards at the two sides of the moving contact 2, thereby connecting the second rack 6f with the moving contact 2.
As shown in fig. 10, further:
a limiting groove extending along the vertical direction is formed in the placement frame 6a, and the first rack 6b is in sliding fit with the limiting groove along the vertical direction.
Based on the above embodiment, the technical problem to be solved by the present application is how the first rack 6b is stably lifted in the setting frame 6 a. For this purpose, the first permanent magnet 3 and the second permanent magnet 4 are stably driven to rotate by arranging a limit groove extending in the vertical direction in the placement frame 6a and enabling the first rack 6b to be in sliding fit with the limit groove in the vertical direction.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A high-pressure direct current contactor arc extinguishing system comprises a static contact (1) and a moving contact (2), wherein the static contact (1) is provided with a first current end (1 a), a second current end (1 b), a first contact (1 c) and a second contact (1 d), the first current end (1 a) is electrically connected with the first contact (1 c), the second current end (1 b) is electrically connected with the second contact (1 d), the moving contact (2) is provided with a third contact (2 a) and a fourth contact (2 b), the third contact (2 a) is electrically connected with the fourth contact (2 b), the first contact (1 c) is electrically closed with the third contact (2 a), the second contact (1 d) is electrically opened with the fourth contact (2 b) when the contactor is opened, the first contact (1 c) and the third contact (2 a) are electrically opened, the second contact (1 d) and the fourth contact (2 b) are electrically opened, and the high-pressure direct current contactor arc extinguishing system is characterized in that the high-pressure direct current contactor arc extinguishing system also comprises a permanent magnet, a first permanent magnet (3), a second permanent magnet (5) and a third contact (5) are horizontally arranged on one side of the first contact (2 a) and a fourth contact (2 b), the first permanent magnet (3) and the second permanent magnet (4) are respectively arranged at the bottoms of the third contact (2 a) and the fourth contact (2 b) and rotate around the axis in the horizontal direction, the rotary driver is arranged at the bottom of the moving contact (2) and is provided with an executing part for guiding the axes in the two horizontal directions to rotate, and when the executing part drives the axis in the horizontal direction to rotate, the magnetic fields of the first permanent magnet (3) and the second permanent magnet (4) rotate and draw the electric arc to diffuse to the metal grid sheet (5).
2. A high-voltage direct-current contactor arc extinguishing system according to claim 1, characterized in that the metal grid (5) is arranged on the opposite sides of the breaking openings of the first contact (1 c) and the third contact (2 a), and the second contact (1 d) and the fourth contact (2 b) along the horizontal direction, and the executing part drives the shafts in the two horizontal directions to rotate outwards in the opposite directions.
3. A high-voltage direct-current contactor arc extinguishing system according to claim 1, characterized in that the metal grid (5) is arranged on opposite sides of the opening of the first contact (1 c) and the third contact (2 a), and the second contact (1 d) and the fourth contact (2 b) in the horizontal direction, and the actuator drives the two shafts in the horizontal direction to rotate inwards in opposite directions.
4. The high-pressure direct current contactor arc extinguishing system according to claim 2, wherein the rotary driver comprises a placement frame (6 a), a first rack (6 b), a first driven shaft (6 c), a first spline shaft (6 d) and a first gear (6 e), the moving contact (2) is arranged in the placement frame (6 a) along the vertical direction, the first rack (6 b) is arranged at two sides of the moving contact (2), the first rack (6 b) extends along the vertical direction, two sides of the first rack (6 b) are respectively provided with a first tooth edge (6 b 1) and a second tooth edge (6 b 2), the first driven shaft (6 c) and the first spline shaft (6 d) are coaxially arranged at two sides of the first rack (6 b) along the horizontal direction in a rotating manner, the first gear (6 e) is coaxially arranged at two ends of the first driven shaft (6 c), the first spline shaft (6 d) at two sides respectively penetrates through the center positions of the first permanent magnet (3) and the second permanent magnet (4) and is fixedly connected with the first tooth edge (6 b) and the second tooth edge (6 b 2), and the first gear (6 e) is meshed with the first gear (6 e) at two sides of the first spline shaft (6 b) respectively.
5. The high-pressure direct-current contactor arc extinguishing system according to claim 4, characterized in that the angular velocity of the first spline shaft (6 d) is greater than the angular velocity of the first driven shaft (6 c) during the downward movement of the moving contact (2).
6. The high-pressure direct current contactor arc extinguishing system according to claim 3, wherein the rotary driver comprises a placement frame (6 a), a second rack (6 f), a second driven shaft (6 g), a second spline shaft (6 h), a second gear (6 i) and a synchronous belt (6 j), the moving contact (2) is arranged in the placement frame (6 a) along the vertical direction, the second rack (6 f) is arranged at two sides of the moving contact (2), the second rack (6 f) extends along the vertical direction, two sides of the second rack (6 f) are respectively provided with a third tooth edge (6 f 1) and a fourth tooth edge (6 f 2), the second driven shaft (6 g) and the second spline shaft (6 h) are coaxially arranged at two sides of the second rack (6 f) along the horizontal direction in a rotating mode, the second gear (6 i) is coaxially arranged at two ends of the second driven shaft (6 g), the second spline shafts (6 h) at two sides penetrate through center positions of the first permanent magnet (3) and the second permanent magnet (4) respectively and are fixedly connected with the third tooth edge (6 f 1) and the fourth tooth edge (6 f 2) respectively, and the second spline shaft (6 i) is fixedly connected with the second spline shaft (6 f) at two sides of the second spline shaft (6 f) through the third tooth edge and the second spline shaft (6 f) respectively.
7. The high-pressure direct-current contactor arc extinguishing system according to claim 6, characterized in that the angular velocity of the second spline shaft (6 h) is greater than the angular velocity of the second driven shaft (6 g) during the downward movement of the moving contact (2).
8. The arc extinguishing system of a high-voltage direct current contactor according to claim 4 or 5, characterized in that the two sides of the moving contact (2) are provided with connecting lugs (2 c) extending downwards, and the first rack (6 b) is fixedly connected with the connecting lugs (2 c).
9. The arc extinguishing system of a high-voltage direct current contactor according to claim 4 or 5, characterized in that the two sides of the moving contact (2) are provided with connecting lugs (2 c) extending downwards, and the second rack (6 f) is fixedly connected with the connecting lugs (2 c).
10. The arc extinguishing system of the high-voltage direct current contactor according to claim 4 or 5, wherein a limiting groove extending along the vertical direction is arranged in the placement frame (6 a), and the first rack (6 b) is in sliding fit with the limiting groove along 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 CN114628176A (en) | 2022-06-14 |
| CN114628176B true 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 (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8902026B2 (en) * | 2010-02-26 | 2014-12-02 | Mitsubishi Electric Corporation | Electric current switching apparatus |
-
2022
- 2022-03-18 CN CN202210270882.8A patent/CN114628176B/en active Active
Patent Citations (6)
| 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 |
| 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 |
|---|---|
| CN114628176A (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114628176B (en) | Arc extinguishing system of high-pressure direct-current contactor | |
| CN102983017A (en) | Three-position switch | |
| CN103050320A (en) | Miniaturized large-current handcart-type vacuum circuit breaker | |
| CN109119293B (en) | Direct current contactor contact system and direct current contactor | |
| CN110277272A (en) | A kind of synchronous shaft assembly and breaker | |
| CN207425733U (en) | A kind of motor drives bridging contact on-load switch | |
| CN202948872U (en) | Vacuum circuit breaker | |
| CN214848359U (en) | Combined circuit breaker operating mechanism for ultra-fast opening | |
| CN102693876A (en) | Direct-current high-voltage relay | |
| CN108417436A (en) | A kind of driving device of high-tension Vacuum switch | |
| CN210272170U (en) | Auxiliary arc extinguishing device for 800kV external grounding switch | |
| CN113097006A (en) | Vacuum arc-extinguishing chamber structure based on radial multi-pole orientation magnetic field regulation and control | |
| CN204257560U (en) | A kind of permanent magnetic drive circuit breaker | |
| CN204441200U (en) | A kind of new construction motor drives relay | |
| CN213815895U (en) | Arc control device and circuit breaker | |
| CN207038428U (en) | It is a kind of to rotate the electrode structure cut-off | |
| CN104485265B (en) | A kind of permanent magnetic drive breaker | |
| CN216902700U (en) | Magnetic system holding structure of switch | |
| CN201749825U (en) | Motor type high-power relay | |
| CN220290696U (en) | Vacuum interrupter and vacuum circuit breaker of 40.5KV | |
| CN110544597A (en) | auxiliary arc extinguishing device for 800kV external grounding switch and use method | |
| CN219958906U (en) | Novel circuit breaker with contact conducting structure | |
| CN219350124U (en) | Circuit breaker structure with high breaking capacity | |
| CN107086150A (en) | It is a kind of to rotate the electrode structure cut-off | |
| CN113782393B (en) | Follow-up permanent magnetic field arc extinguishing mechanism in double-breakpoint direct-acting contactor |
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 |