CN2560086Y - Permanent magnet step positioning permanent magnetic operating mechanism - Google Patents
Permanent magnet step positioning permanent magnetic operating mechanism Download PDFInfo
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- CN2560086Y CN2560086Y CN 02223115 CN02223115U CN2560086Y CN 2560086 Y CN2560086 Y CN 2560086Y CN 02223115 CN02223115 CN 02223115 CN 02223115 U CN02223115 U CN 02223115U CN 2560086 Y CN2560086 Y CN 2560086Y
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- permanent
- permanent magnet
- yoke
- iron core
- magnetic yoke
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Abstract
The step locating permanent-magnetic operation mechanism of a permanent magnet of the utility model relates to the elements of power supply and distribution, in particular to the permanent-magnetic locating structure of an unsymmetrical permanent-magnetic operation mechanism of a high-low voltage vacuum circuit breaker. And the utility model aims at solving the problem of easy fragmentation caused by the complexity of the permanent-magnetic locating structure in the prior art. The permanent-magnetic operation mechanism comprises a cylindrical external magnetic yoke (5), an upper magnetic yoke (2) which is arranged on the upper end of the external magnetic yoke, a lower magnetic yoke (12) which is arranged at the lower end of the external magnetic yoke, a magnetic shunt block (4) which is arranged at the internal upper end of the external magnetic yoke, a close-open coil (10) which is arranged at the internal lower end of the external magnetic yoke, a permanent magnet (8) and an internal magnetic yoke (7) which are sleeved in the middle of the external magnetic yoke in sequence; a movable iron core (9) is sleeved in the close-open coil; a spring (3) and an open spring (11) are respectively connected with the upper end and the lower end of the movable iron core; an upper guide bar (1) and a lower guide bar (13) are connected respectively with the upper end and the lower end of the movable iron core; the inner circle of the external magnetic yoke is provided with internal steps (14) which is inosculated with the end parts of the permanent magnets. The utility model is suitable to be utilized with a high-low voltage vacuum circuit breaker.
Description
Technical field
The utility model relates to for the distribution device, the asymmetric permanent-magnet manipulating mechanism and the permanent magnet location structure of special high-low pressure vacuum circuit-breaker.
Background technology
The operating mechanism of existing low pressure, primary cut-out mainly adopts spring operating mechanism, along with though the technological progress spring operating mechanism is more and more exquisite, but a large amount of parts that constitute spring operating mechanism but do not reduce, the fault of circuit breaker increases with the increase of number of spare parts, and fault statistics shows that the mechanical breakdown of circuit breaker accounts for significant proportion.Along with the extensive application of NdFeb alloy permanent magnet, developed permanent-magnet manipulating mechanism (PMA).The structure of permanent-magnet manipulating mechanism can be divided into symmetric form and asymmetric, can also be divided into monostable and bistable state, shape have square and circular by the magnetic circuit form.Wherein asymmetric permanent-magnet manipulating mechanism is by outer yoke and the upper magnet yoke of upper end and the lower yoke of lower end of tubular, the magnetic shunt piece of upper end and the on/off switch coil of lower end in the outer yoke, the outer yoke middle part is the permanent magnet and the inner yoke of interior cover successively, cover is the moving iron core that is slidingly matched in the on/off switch coil, the hand that joins with moving iron core upper and lower side divides spring and tripping spring respectively, and top guide bar that links to each other with moving iron core upper and lower side and lower guide rod constitute respectively.During use lower guide rod is linked to each other with the moving contact of circuit breaker.The motion of moving iron core motion drive lower guide rod can be controlled in the opposing magnetic field that this permanent-magnet manipulating mechanism produces by the current excitation in the on/off switch coil makes circuit breaker finish branch, closing operation.Because this permanent-magnet manipulating mechanism mechanical lock buckle of the magnetic force snap close replacement spring operating mechanism of magnetic circuit, so designs simplification, failure rate is low, the reliability height.But the permanent magnet of this permanent-magnet manipulating mechanism adopts the pin location, with pin permanent magnet is positioned on the outer yoke.Because the permanent-magnet manipulating mechanism opposing magnetic field that magnet exciting coil produces when separating brake promotes permanent magnet in the axial direction, to be that the point type contact produces stress concentrated owing to pin connects again, therefore make the permanent magnet of fragility cracked easily, the fragment that cracked permanent magnet produces can be transferred to the two ends of moving iron core by magnetic, causes the damage to permanent-magnet manipulating mechanism.In addition, because permanent magnet suction is big, the installation of this location structure is comparatively complicated, is unfavorable for dismounting during debugging.
The utility model content
In view of above-mentioned, the purpose of this utility model is to provide a kind of simple in structure, permanent magnet can breakage and the permanent magnet stage locate mode permanent-magnet manipulating mechanism of easy accessibility.
The utility model is on the basis of existing permanent-magnet manipulating mechanism, and employing is provided with stage formula location structure and realizes its purpose between permanent magnet and outer yoke.
Permanent magnet stage locate mode permanent-magnet manipulating mechanism of the present utility model (referring to accompanying drawing), the outer yoke (5) and the upper magnet yoke (2) of upper end and the lower yoke (12) of lower end that comprise tubular, the magnetic shunt piece (4) of upper end and the on/off switch coil (10) of lower end in the outer yoke, the outer yoke middle part is the permanent magnet (8) and the inner yoke (7) of interior cover successively, be with moving iron core (9) in the on/off switch coil, the spring (3) and the tripping spring (11) that join respectively with moving iron core upper and lower side, top guide bar (1) that links to each other with moving iron core upper and lower side and lower guide rod (13) respectively are at the interior step (14) of the interior Zhou Youyu permanent magnet end anastomosis of outer yoke.
The upper end of above-mentioned permanent magnet (8) and interior step (14) join, the lower end with close sub-coil (10) and join.
The periphery of above-mentioned inner yoke (7) has the annular groove (15) that matches with permanent magnet (8).
The utility model compared with prior art, permanent magnet clamps between the interior step that is fixed on on/off switch coil top and outer yoke inner surface, the permanent magnet of annular is pull-in on the inner surface of outer yoke and withstands permanent magnet one end fixing with interior step.Particularly utilize the annular groove of inner yoke outer surface, be embedded in the annular groove inside portion of annular permanent magnet fixing up and down.This fixed structure all is securely fixed in the outer yoke inner yoke and permanent magnet, can not produce to move up and down.Because there is not the such shop bolt of prior art, thus the danger of permanent magnet breakage can not take place, and also mounting or dismounting are simple, can directly pack into, take out from the outer yoke lower end.
The utility model is applicable to and the supporting use of high-low pressure vacuum circuit-breaker.
Below, the utility model is further described to use embodiment and accompanying drawing thereof again.
Description of drawings
Fig. 1 is the structural representation of a kind of permanent magnet stage locate mode permanent-magnet manipulating mechanism of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
The structural representation that the permanent magnet stage locate mode permanent-magnet manipulating mechanism of Fig. 3 Fig. 1 and circuit breaker are equipped.
Embodiment
A kind of permanent magnet stage locate mode permanent-magnet manipulating mechanism of the present utility model, as shown in drawings.
The permanent-magnet manipulating mechanism of present embodiment, referring to Fig. 1,2, useful common silicon steel sheet closed assembly constitute with the integrally-built columnar outer yoke 5 of steel, useful respectively screw connects or is welded to connect in the top and bottom of outer yoke upper magnet yoke 2 and lower yoke 12, thus the upper and lower port of outer yoke sealed respectively.Magnetic shunt piece 4 with the annular of upper magnet yoke adhesive is arranged in the upper end of outer yoke inner chamber.Lower end at the centre bore of magnetic shunt piece is the underslung slide damper 6 that annular is installed with staircase structural model, and spiral spring 3 is installed in the slide damper.Fixedly mount the on/off switch coil 10 of useful coil rack coiling in the lower end of outer yoke inner chamber.The middle part of outer yoke inner chamber is right after the on/off switch coil and is set with by the synthetic columnar permanent magnet 8 of the set of permanent magnets of four circular arcs with common structure.Permanent magnet adopts rare earth permanent-magnetic material NdFeb alloy to make.The inner chamber of permanent magnet also is set with columnar inner yoke 7 with common structure.Between permanent magnet and inner yoke upper end and magnetic shunt piece lower end, leave suitable gap.The moving iron core 9 of the T-shaped cylinder step of vertical section is housed at inner yoke and on/off switch coil inner chamber.Be shaped on spring groove in moving iron core lower surface, be shaped on the spring groove of recessed annular in the upper surface of lower yoke downwards to the annular that is recessed on.Both spring groove sizes are identical, and tripping spring 11 is installed.The top guide bar that is connected with circular bar shape 1 and the lower guide rod 13 that are coaxial line at the upper and lower side of moving iron core with helicitic texture respectively.Top guide bar and lower guide rod run through the central shaft hole of upper magnet yoke and lower yoke respectively and stretch out, and are the pilot hole that moves up and down with this two axis hole.
The interior step 14 that is shaped on annular interior week in above-mentioned outer yoke, the step surface of the outside of the upper surface of permanent magnet 8 and interior step 14 joins, the lower surface with close sub-coil 10 and join, thereby step and close between the sub-coil and firmly fixing in permanent magnet is embedded in the outer yoke adhesive.
The periphery of above-mentioned inner yoke 7 is shaped on recessed annular groove 15, and annular groove width and permanent magnet axial length in the axial direction coincide, thereby the interior perimembranous of permanent magnet is embedded in the annular groove of inner yoke and firmly fixing with the permanent magnet adhesive.
This permanent-magnet manipulating mechanism by permanent magnet 8, will move iron core and be locked in closing position by outer yoke 5, lower yoke 12, moving iron core 9, inner yoke 7 formation combined floodgate magnetic circuits when closing position.Forming the separating brake magnetic circuit by permanent magnet 8, outer yoke 5, upper magnet yoke 2, moving iron core 9, inner yoke 7 when the separating brake position will move iron core and be locked in the separating brake position.Form the magnetic force snap close of magnetic circuit.
When the vacuum switch tube 16 of this permanent-magnet manipulating mechanism and circuit breaker is equipped with,, connecting lever 17, the connecting rod 18 of lower guide rod 13 through lever-type structure is connected with the moving contact 19 of circuit breaker referring to Fig. 3.
Course of action when this permanent-magnet manipulating mechanism cooperates with circuit breaker:
When circuit breaker needs separating brake, involutory switching winding 10 excitations of impressed current produce the magnetic field opposite with the combined floodgate magnetic circuit, reduce the confining force of closing position snap close, stage clip 20 energy storage in tripping spring 11 and the circuit breaker connecting rod 18 simultaneously discharge iron core 9 are moved upward, the lower end produces air gap, closing retention force reduces rapidly, and the suction that the magnetic circuit that the air gap of upper end reduces to form produces increases, make iron core 9 upwards accelerated motions, the impact of the moving iron core of buffering accumulated energy spring 3 buffering and store impact energy up to 4 adhesives of magnetic shunt piece, form closed separating brake magnetic circuit, will move iron core at separating brake position magnetic force snap close.It is descending to drive moving contact 19 by connecting rod 18 simultaneously, is separated to the specified distance of opening with fixed contact 21.
When circuit breaker need close a floodgate, involutory switching winding 10 excitations of impressed current produce enough big magnetic force moves downward iron core 9, the buffering accumulated energy spring discharges the impact energy that stores simultaneously, the upper end produces air gap, the separating brake confining force reduces rapidly, and the suction that the magnetic circuit that the air gap of lower end reduces to form produces increases, make the downward accelerated motion of iron core, to tripping spring 11 energy storage, stage clip 20 energy storage in the connecting rod are up to moving iron core and lower yoke 12 adhesives, form closed combined floodgate magnetic circuit, will move iron core at closing position magnetic force snap close.It is up to drive moving contact 19 by connecting rod 18 simultaneously, with fixed contact 21 closures.
When needs carry out manually independently separating brake dropout, this moment, moving iron core 9 was in closing position, the snap close (not shown) of permanent magnet mechanism external device (ED) to the magnetic shunt piece removed in manual control, magnetic shunt piece 4 downslides and outer yoke 5 this moment, permanent magnet 8, inner yoke 7, moving iron core 9 form one with the opposite magnetic circuit of moving iron core 9 bottom magnetic circuits, offset a part of magnetic flux, reduce closing retention force, the two energy storage of the tripping spring of energy storage at this moment and the stage clip of connecting rod 20 is greater than closing retention force, iron core 9 is moved upward, the air gap of lower end increases, the air gap of upper end reduces, the suction that the magnetic circuit that the upper end forms produces increases, make iron core 9 drive magnetic shunt pieces 4 quicken to move upward up to upper magnet yoke 2 adhesives, form closed separating brake magnetic circuit, will move iron core at separating brake position magnetic force snap close, the magnetic shunt piece is by permanent magnet mechanism external device (ED) mechanical lock buckle simultaneously, again by lower guide rod 13, connecting lever 17, it is descending that connecting rod 18 drives moving contact 19, is separated to the specified distance of opening with fixed contact 21.
Claims (3)
1, a kind of permanent magnet stage locate mode permanent-magnet manipulating mechanism, the outer yoke (5) and the upper magnet yoke (2) of upper end and the lower yoke (12) of lower end that comprise tubular, the magnetic shunt piece (4) of upper end and the on/off switch coil (10) of lower end in the outer yoke, the outer yoke middle part is the permanent magnet (8) and the inner yoke (7) of interior cover successively, be with moving iron core (9) in the on/off switch coil, the spring (3) and the tripping spring (11) that join respectively with moving iron core upper and lower side, top guide bar (1) that links to each other with moving iron core upper and lower side and lower guide rod (13) respectively is characterized in that the interior step (14) of the interior Zhou Youyu permanent magnet end anastomosis of outer yoke.
2, permanent magnet stage locate mode permanent-magnet manipulating mechanism according to claim 1 is characterized in that the upper end of said permanent magnet (8) and interior step (14) join, the lower end with close sub-coil (10) and join.
3, permanent magnet stage locate mode permanent-magnet manipulating mechanism according to claim 1 and 2 is characterized in that the periphery of said inner yoke (7) has the annular groove (15) that matches with permanent magnet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223115 CN2560086Y (en) | 2002-06-28 | 2002-06-28 | Permanent magnet step positioning permanent magnetic operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223115 CN2560086Y (en) | 2002-06-28 | 2002-06-28 | Permanent magnet step positioning permanent magnetic operating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560086Y true CN2560086Y (en) | 2003-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02223115 Expired - Fee Related CN2560086Y (en) | 2002-06-28 | 2002-06-28 | Permanent magnet step positioning permanent magnetic operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2560086Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022061B (en) * | 2007-03-20 | 2010-06-23 | 浙江正泰电器股份有限公司 | Air circuit breaker with permanent magnetic operating mechanism |
| CN101425404B (en) * | 2008-11-19 | 2012-04-25 | 郑文秀 | Permanent magnet type dual electric power conversion switch |
| CN101419871B (en) * | 2008-11-19 | 2012-08-01 | 温州大学 | Intelligent duplicate power supply conversion switch |
-
2002
- 2002-06-28 CN CN 02223115 patent/CN2560086Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022061B (en) * | 2007-03-20 | 2010-06-23 | 浙江正泰电器股份有限公司 | Air circuit breaker with permanent magnetic operating mechanism |
| CN101425404B (en) * | 2008-11-19 | 2012-04-25 | 郑文秀 | Permanent magnet type dual electric power conversion switch |
| CN101419871B (en) * | 2008-11-19 | 2012-08-01 | 温州大学 | Intelligent duplicate power supply conversion switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |