CN210015817U - Anti-interference vacuum circuit breaker - Google Patents
Anti-interference vacuum circuit breaker Download PDFInfo
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- CN210015817U CN210015817U CN201921299396.9U CN201921299396U CN210015817U CN 210015817 U CN210015817 U CN 210015817U CN 201921299396 U CN201921299396 U CN 201921299396U CN 210015817 U CN210015817 U CN 210015817U
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Abstract
The utility model provides an anti-interference vacuum circuit breaker, which comprises a box body, a pole post, a transmission mechanism, a switch, a closing coil, an opening coil, a driving rod, a permanent magnet and a movable iron core, wherein the box body comprises a pole post chamber, a transmission chamber and a coil chamber, the lower end of the pole post chamber is provided with a through hole, the pole post is fixedly arranged on the through hole, a connecting rod of the pole post extends downwards from the lower end of the pole post to the transmission chamber, the transmission mechanism is arranged in the transmission chamber, one end of the transmission mechanism is connected with the driving rod, the other end of the transmission mechanism is connected with the connecting rod, the coil chamber is sequentially provided with the closing coil, the permanent magnet and the opening coil, the upper end of the opening coil is provided with a through hole, the driving rod extends upwards through the through hole, the movable iron core is arranged on the upper, the switch is arranged at the front end of the box body. The transmission mechanism, the pole and the coil are respectively provided with independent spaces, so that mutual interference among all parts is prevented.
Description
Technical Field
The utility model relates to a vacuum circuit breaker field especially relates to an jam-proof vacuum circuit breaker.
Background
With the rapid increase of electricity consumption in China, the transmission line and transmission grade of a power grid are further improved in recent years, so that the demand of breaker equipment is rapidly increased, and the requirements on stable operation and environmental protection of the breaker are also improved.
Vacuum circuit breaker closes big voltage of heavy current with miniature structure, consequently by the wide application in transformer or distribution equipment, vacuum circuit breaker is when the separating brake, produces electric arc between the contact, and the contact surface volatilizees metal ion steam under high temperature, produces magnetic field when the electric current passes through, and electric arc is along contact surface tangential direction fast movement under this magnetic field effect, the partial metal steam that condenses on the metal cylinder, and electric arc is just extinguished at nature zero crossing, is the high vacuum state between the explosion chamber contact this moment, consequently calls for vacuum circuit breaker. The metal vapor is easily affected by an external magnetic field in the arc extinguishing process, so that an electromagnetic interference resistant vacuum circuit breaker is needed.
Disclosure of Invention
In order to solve the above technical problems, an electromagnetic interference preventing vacuum circuit breaker is provided.
The utility model provides an jam-proof vacuum circuit breaker, includes box, utmost point post, drive mechanism, switch, closing coil, separating brake coil, actuating lever, permanent magnet, moves the iron core, the box includes utmost point post room, transmission room and coil room, utmost point post room lower extreme is equipped with the through-hole, utmost point post fixed mounting is on the through-hole, the connecting rod of utmost point post extends to the transmission room downwards from utmost point post lower extreme, drive mechanism installs in the transmission room, drive mechanism one end is connected with the actuating lever, the other end is connected with the connecting rod, the coil room is established transmission room front side top, coil room lower extreme is equipped with closing coil, and closing coil upper end is equipped with the permanent magnet, and the permanent magnet upper end is equipped with separating brake coil, separating brake coil upper end is equipped with the through-hole that runs through separating brake coil, permanent magnet, closing coil and coil room lower extreme, The upper side of the driving rod is provided with a movable iron core, the switch comprises a closing switch and an opening switch, the closing switch is connected with the closing coil, the opening switch is connected with the opening coil, and the switch is installed at the front end of the box body.
Preferably, drive mechanism includes base, axis of rotation, first pivoted arm, second transmission arm, the transmission room lower extreme is equipped with two at least bases, be equipped with the axis of rotation between the base, but swivelling joint between base and the axis of rotation, first pivoted arm one end and axis of rotation fixed connection, the other end with connecting rod swivelling joint, second pivoted arm one end and axis of rotation fixed connection, the other end and actuating lever swivelling joint, first pivoted arm is located the different sides of axis of rotation with the second pivoted arm.
Preferably, the second rotating arm and the first rotating arm are bent upwards, and the rotating shaft is rotatably connected with the base through a floating ball bearing.
Preferably, the second swivel arm is longer than the first swivel arm.
Preferably, a first linear bearing is arranged at the upper end of the opening coil, a second linear bearing is arranged at the lower end of the coil chamber, and the driving rod is nested in the first linear bearing and the second linear bearing.
Preferably, an annular gasket is arranged between the pole and the through hole of the pole chamber.
Preferably, the front end and the rear end of the box body are respectively provided with a cover plate.
Preferably, a return spring is arranged in the switch.
Preferably, a gap is formed between the movable iron core and the permanent magnet.
Preferably, the box body further comprises an electrical chamber, and the switch is mounted at the front end of the electrical chamber.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the utility model provides a vacuum circuit breaker, drive mechanism, utmost point post, coil (closing coil and separating brake coil) respectively are equipped with an independent space, prevent mutual interference between each part, and closing coil and separating brake coil in the coil chamber produce stronger magnetic field at the during operation, and the baffle between coil chamber and utmost point post room and the coil chamber links to each other with utmost point post room after the drive chamber, prevents that the coil magnetic field from causing the interference to utmost point post; 2. the pole is arranged in an independent space, only the contact is exposed, and the interference of an external electromagnetic field on an arc extinguish chamber arranged on the pole is further prevented; 3. linear bearings are respectively arranged on the upper side and the lower side of the driving rod, so that the friction force in the movement of the driving rod is reduced; 4. gaps are reserved between the movable iron core and the closing coil, between the opening coil and the permanent magnet, and the resistance of the driving rod in the motion process is reduced; 5. the length of the second transmission arm is longer than that of the first transmission arm, the opening and closing speed is accelerated by the lever effect, and the current fluctuation in the opening and closing process is reduced; 6. the rotating shaft is connected with the base through the floating ball bearing, and the bearing capacity of the rotating shaft is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the pole chamber of the present invention;
FIG. 3 is a closing coil stripping view;
fig. 4 is a schematic diagram of the transmission mechanism.
In the drawings, the reference numbers: 1-box, 11-transmission chamber, 12-electric chamber, 13-coil chamber, 14-pole chamber, 2-pole, 22-connecting rod, 23-annular gasket, 3-switch, 4-opening coil, 41-first linear bearing, 5-permanent magnet, 51-movable iron core, 6-closing coil, 61-second linear bearing, 7-base, 71-rotating shaft, 72-second transmission arm, 73-first transmission arm, 74-driving rod, 75-floating ball bearing.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model provides an anti-interference vacuum circuit breaker, as shown in fig. 1 and 2, including box 1, utmost point post 2, drive mechanism, switch 3, closing coil 6 and separating brake coil 4, its characterized in that still includes actuating lever 74, permanent magnet 5, moves iron core 51, and box 1 includes utmost point post room 14, transmission room 11 and coil room 13, and utmost point post room 14 lower extreme is equipped with the through-hole, and utmost point post 2 fixed mounting is in on the through-hole, connecting rod 22 extends to transmission room 11 from utmost point post 2 lower extreme downwardly extending, drive mechanism installs in transmission room 11, drive mechanism one end is connected with actuating lever 74, the other end is connected with connecting rod 22, and coil room 13 establishes transmission room 11 front side top, coil room 13 lower extreme are equipped with closing coil 6, and closing coil 6 upper end is equipped with permanent magnet 5, and permanent magnet 5 upper end is equipped with separating brake coil 4, and separating brake coil 4 upper ends are equipped with and run through separating brake, Permanent magnet 5, closing coil 6 and the through-hole of coil chamber 13 lower extreme, actuating lever 74 upwards extend and pass coil chamber lower extreme 13, closing coil 6, permanent magnet 5 and separating brake coil 4 in proper order, actuating lever 74 upside is equipped with movable iron core 51, and switch 3 includes closing switch and separating brake switch, closing switch is connected with closing coil 6, separating brake switch is connected with separating brake coil, the switch mounting is at the box front end. The transmission mechanism, the pole 2 and the coils (the closing coil 6 and the opening coil 4) are respectively provided with an independent space to prevent mutual interference among all the components, the closing coil 6 and the opening coil 4 in the coil chamber 13 generate a strong magnetic field during working, and the partition board between the coil chamber 13 and the pole chamber 22 and the coil chamber 13 are connected with the pole chamber 14 after passing through the transmission chamber 11 to prevent the coil magnetic field from causing interference on the pole 2.
The transmission mechanism comprises a base 7, a rotating shaft 71, a first transmission arm 73 and a second transmission arm 72, wherein the lower end of the transmission chamber 11 is provided with two bases 7, the rotating shaft 71 is arranged between the bases 7, the bases 7 and the rotating shaft 71 are rotatably connected, one end of the first transmission arm 73 is fixedly connected with the rotating shaft 71, the other end of the first transmission arm is rotatably connected with the connecting rod 22, one end of the second transmission arm 72 is fixedly connected with the rotating shaft 71, the other end of the second transmission arm is rotatably connected with the driving rod 74, and the first transmission arm 73 and the second transmission arm 72 are positioned on different sides of the rotating shaft 71. When the closing switch is started, the closing coil 6 is electrified to generate a longitudinal induction magnetic field, the movable iron core 51 is pulled to the closing coil, the movable iron core 51 drives the driving rod 74 to move downwards, so that the first driving arm 73 moves downwards, the second driving arm 72 moves upwards under the lever action of rotation, so that the connecting rod 22 moves upwards, the connecting rod 22 pushes the movable contact in the pole to move upwards to play a closing role, and after the closing coil is powered off, the permanent magnet 5 sucks the movable iron core 51 through a transverse magnetic field to enable the movable iron core 51 to keep a position and not to shake easily; when the opening switch is started, the opening coil is electrified to generate a longitudinal induction magnetic field, the movable iron core 51 moves towards the opening coil and drives the driving rod 74 to move upwards, the pole connecting rod 22 moves downwards through the transmission mechanism, so that contacts in the pole are separated, and after the opening coil is powered off, the permanent magnet 5 sucks the movable iron core 51 through a transverse magnetic field to enable the movable iron core 51 to keep in position and not to shake easily. As shown in fig. 4, the outer ends of the first transmission arm 73 and the second transmission arm 72 are preferably bent upward and arc-shaped, so that the two transmission arms are prevented from extruding the rotation shaft 71 simultaneously during the movement of the transmission arms, the applicability is improved, the transmission mechanism is more stable, a floating ball bearing 75 can be arranged between the rotation shaft 71 and the base 7, the outer ring of the floating ball bearing 75 is fixed to the base, and the rotation shaft is nested on the inner ring of the floating ball bearing 75, so that the pressure bearing capacity of the rotation shaft 71 is improved. The number of the bases 7 can be two or more, and the plurality of the bases 7 is beneficial to improving the support of the rotating shaft. The length of the second transmission arm 72 is longer than that of the first transmission arm 73, and the movement speed of the connecting rod at the outer end of the second transmission arm 72 is accelerated through the lever effect, so that the opening and closing speed is accelerated, and the current fluctuation time during opening and closing is shortened.
As shown in fig. 3, the upper end of the opening coil is provided with a first linear bearing 41, the lower end of the coil chamber can also be provided with a second linear bearing 61, and the driving rod 74 is nested in the inner rings of the two linear bearings, so as to avoid the driving rod from shaking and reduce the friction force of the driving rod moving up and down. Meanwhile, a certain gap is formed between the movable iron core 51 and the side wall of the through hole, so that the movable iron core 51 is prevented from being scraped to the side wall in the movement process, and the friction force is reduced.
The front end and the rear end of the box body 1 are respectively provided with a cover plate, so that the box body is closed, and only the contact of the pole is exposed after the pole chamber 14 is closed, thereby preventing an external electromagnetic field from interfering an arc extinguish chamber arranged on the pole 2; an annular gasket 23 is arranged between the pole 2 and the through hole of the pole chamber 14, so that the pole is prevented from being scratched, and meanwhile, the shock absorption effect is achieved. The front end of the box body 1 is also provided with an electrical room 12, the electrical room 12 is positioned on the left side of the coil room 13, the switch 3 is installed at the front end of the electrical room 12, and the electrical room 12 is used for installing other accessory components, so that wiring, installation and maintenance are facilitated. A return spring is further arranged in the switch 3, and after the switch 3 is pressed down and loosened, the return spring enables the switch 3 to return, so that power supply to the coil for a long time is avoided, and the applicability is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an jam-proof vacuum circuit breaker, includes box, utmost point post, drive mechanism, switch, combined floodgate coil and separating brake coil, its characterized in that still includes actuating lever, permanent magnet, moves the iron core, the box includes utmost point post room, transmission room and coil room, utmost point post room lower extreme is equipped with the through-hole, utmost point post fixed mounting is on the through-hole, the connecting rod of utmost point post extends to the transmission room downwards from utmost point post lower extreme, drive mechanism installs at the transmission room, drive mechanism one end is connected with the actuating lever, the other end is connected with the connecting rod, the coil room is established transmission room front side top, coil room lower extreme is equipped with combined floodgate coil, and combined floodgate coil upper end is equipped with the permanent magnet, and the permanent magnet upper end is equipped with separating brake coil, separating brake coil upper end is equipped with the through-hole that runs through separating brake coil, permanent magnet, combined, The upper side of the driving rod is provided with a movable iron core, the switch comprises a closing switch and an opening switch, the closing switch is connected with the closing coil, the opening switch is connected with the opening coil, and the switch is installed at the front end of the box body.
2. The interference-proof vacuum circuit breaker according to claim 1, wherein the transmission mechanism comprises a base, a rotation shaft, a first rotation arm, and a second transmission arm, the transmission chamber has at least two bases at a lower end thereof, the rotation shaft is disposed between the bases, the bases are rotatably connected to the rotation shaft, the first rotation arm has one end fixedly connected to the rotation shaft and the other end rotatably connected to the connection rod, the second rotation arm has one end fixedly connected to the rotation shaft and the other end rotatably connected to the driving rod, and the first rotation arm and the second rotation arm are located at different sides of the rotation shaft.
3. The interference-proof vacuum circuit breaker according to claim 2, wherein the second rotary arm and the first rotary arm are bent upward, and the rotary shaft is rotatably connected to the base by a ball bearing.
4. The tamper-proof vacuum circuit breaker according to claim 2, characterized in that the second swivel arm is longer than the first swivel arm.
5. The interference-proof vacuum circuit breaker according to claim 1, wherein the opening coil is provided at an upper end thereof with a first linear bearing, the coil chamber is provided at a lower end thereof with a second linear bearing, and the driving rod is nested in the first linear bearing and the second linear bearing.
6. The tamper-proof vacuum circuit breaker according to claim 1, wherein an annular gasket is provided between the pole and the pole chamber through hole.
7. The interference-proof vacuum circuit breaker according to claim 1, wherein said case is provided at front and rear ends thereof with cover plates, respectively.
8. The tamper-proof vacuum circuit breaker according to any of claims 1 to 7, wherein a return spring is provided in the switch.
9. The tamper-proof vacuum circuit breaker according to any of claims 1-7, wherein there is a gap between the moving core and the permanent magnet.
10. The tamper-proof vacuum circuit breaker according to any one of claims 1 to 7, wherein the housing further comprises an electrical chamber, and the switch is mounted at a front end of the electrical chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299396.9U CN210015817U (en) | 2019-08-12 | 2019-08-12 | Anti-interference vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921299396.9U CN210015817U (en) | 2019-08-12 | 2019-08-12 | Anti-interference vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210015817U true CN210015817U (en) | 2020-02-04 |
Family
ID=69320001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921299396.9U Active CN210015817U (en) | 2019-08-12 | 2019-08-12 | Anti-interference vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210015817U (en) |
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2019
- 2019-08-12 CN CN201921299396.9U patent/CN210015817U/en active Active
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