CN107809034B - Magnetic blowout type high-voltage electric connector - Google Patents
Magnetic blowout type high-voltage electric connector Download PDFInfo
- Publication number
- CN107809034B CN107809034B CN201711224463.6A CN201711224463A CN107809034B CN 107809034 B CN107809034 B CN 107809034B CN 201711224463 A CN201711224463 A CN 201711224463A CN 107809034 B CN107809034 B CN 107809034B
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- terminal
- magnets
- annular
- halbach array
- magnet
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- 238000010791 quenching Methods 0.000 claims abstract description 10
- 230000000171 quenching effect Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 7
- 230000005415 magnetization Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a magnetic quenching type high-voltage electric connector, which comprises a first terminal and a second terminal which form a contact pair, wherein a plurality of magnets are arranged around the contact pair, the magnets form an annular halbach array structure, the first terminal is arranged in a first terminal shell of the electric connector, the second terminal is arranged in a second terminal shell of the electric connector, the magnets are inlaid in the second terminal shell and form the annular halbach array structure, and the top of the second terminal is positioned in a circular ring of the annular halbach array structure. The invention provides a magnetic quenching device constructed by utilizing a halbach array mode. The halbach array structure is arranged around the contact pair terminal of the high-voltage electric connector, so that the field intensity of a magnetization area is extremely high and uniform, a magnetic field blind area does not exist, a uniformly distributed magnetic field with uniform intensity exists in an electric arc area, and the problem of slow arc extinguishing speed caused by nonuniform magnetic field due to the fact that only two pairs of magnets are used in the prior art is solved.
Description
Technical Field
The present disclosure relates to high voltage connectors, and particularly to a magnetic blowout type high voltage connector.
Background
The greatest risk is the damage of the arc to the connector when plugging in and out the hvdc connector. When the male and female terminals of the connector are close but not in contact (i.e., the air gap between the male and female terminals is small), if the high-voltage direct current is not turned off in advance at this time, a large voltage difference exists between the male and female terminals, resulting in ionization of air near the gap, forming a current flowing through the air gap and generating an arc. When the air gap is too large, the ionized air density is insufficient and the arc extinguishes. The generation of an arc easily causes the male and female terminals of the connector to burn or even fuse together.
The most direct method for solving the arc is to shut off the power supply of the power supply end before plugging the high-voltage direct current connector. But this practice is too dependent on the correct action of the operator and is risky. Therefore, many high-voltage direct current connectors with foolproof function or hot plug function are designed.
Magnetic quenching is a method capable of accelerating the quenching of an electric arc. When an arc is generated, current flows through the air gap between the male terminal and the corresponding terminal of the female terminal of the connector. If there is an externally applied magnetic field, the current in the flow deviates. The offset of the current path is equivalent to the increase of the gap between the male base terminal and the corresponding terminal of the female base, and the extinction of the arc is accelerated.
In a conventional two-terminal dc high voltage connector, there are only live and ground wires. Only one live wire is provided, and the ground wire is used for connecting the ground wires of the power supply end and the power receiving end, so that an electric arc only occurs between the live wire terminals of the male seat and the female seat. The existing high-voltage electrical connectors such as CN103094733a and CN103326177a mainly solve the problem of electric arc between the male and female socket live terminals.
In the hvdc system, the distance between the power supply and the receiving device may be far, so there is a potential (voltage) difference between the ground of the power supply and the ground of the receiving device. Only the two-terminal dc high voltage electrical connectors of the live and ground wires will have current flowing on the ground wire. To solve this problem, another common dc-to-ac connector is to use a separate ground, i.e. separate ground wire. The high-voltage direct current of the power supply end enters the equipment of the power receiving end through the positive terminal of the connector and then returns to the power supply end through the negative terminal of the connector. Meanwhile, the ground wire of the power supply end and the ground wire of the power receiving end are connected through the connector. In this case, the hvdc connector would have three contacts. The positive terminal enables a power supply end power supply to input high-voltage direct current to power receiving end equipment; the negative terminal returns the high-voltage direct current of the power receiving end equipment to the power supply end power supply; the ground terminal is used for connecting the power supply end power supply and the ground of the power receiving end equipment. In other words, when the three-terminal high voltage dc connector is hot plugged, both the positive and negative terminals will flow high voltage dc and generate an arc.
As shown in fig. 6, in the conventional three-terminal hvth connector, an arc is generated at the positive and negative terminals (positive terminal 1, negative terminal 2, positive terminal current direction 11, negative terminal current direction 21, magnetic field direction 3, current offset direction 4). With magnetic blow-out, the direction of arc movement must be such that the farther apart the two arcs are, the better. Since there is an angle of 110 degrees between the positive and negative terminals, the direction 3 of the magnetic field must be as shown in the figure so that the direction of movement of the arcs will be the farther the two arcs are from each other. If the practices of CN103094733a and CN103326177a are adopted, there are the following disadvantages: (1) The placement positions of the two pairs of magnets are limited by the shape of the male seat, and the mutual interference between the two pairs of magnets cannot be avoided. (2) It is difficult to have a uniformly distributed and uniform strength magnetic field in the arc area, and the substantial effect of these drawbacks is to slow down the extinguishing speed.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a magnetic blowout type high voltage electrical connector is provided, including a first terminal and a second terminal constituting a contact pair, a plurality of magnets are disposed around the contact pair, and the plurality of magnets constitute a halbach array structure.
Preferably, a plurality of the magnets form an annular halbach array structure.
Preferably, the first terminal is disposed in a first terminal housing of the electrical connector, the second terminal is disposed in a second terminal housing of the electrical connector, the plurality of magnets are embedded in the second terminal housing and form an annular halbach array structure, and a top of the second terminal is located in a circle of the annular halbach array structure.
Preferably, a plurality of the magnets form a linear halbach array structure.
Preferably, the first terminal is disposed in a first terminal housing of the electrical connector, the second terminal is disposed in a second terminal housing of the electrical connector, and the plurality of magnets are embedded in the second terminal housing and form a linear halbach array structure, and the linear halbach array structure is located at two sides of the second terminal.
Preferably, the first terminal and the second terminal are each any one of a circular terminal, a square terminal, a hexagonal terminal, a rectangular terminal, a triangular terminal, and a trapezoidal terminal.
Preferably, the magnet is any object that can generate magnetic force.
Preferably, any one of neodymium iron boron magnet, ferrite and magnetic steel is adopted.
Preferably, the plurality of magnets are connected within the second terminal housing by a ring magnet mount; the annular magnet fixing piece is internally provided with a plurality of slidable upper clamping pieces and lower clamping pieces, and the upper clamping pieces and the lower clamping pieces are matched with each other to clamp and fix the magnet.
Preferably, the upper clamping piece and the lower clamping piece are slidably connected with the annular magnet fixing piece in the following manner: an annular sliding rail is arranged in the annular magnet fixing piece, and sliding blocks matched with the annular sliding rail are arranged on the upper clamping piece and the lower clamping piece; limiting blocks are arranged on two sides of the upper clamping piece or the lower clamping piece on the sliding rail; grooves are formed in the upper clamping piece and the lower clamping piece, and the upper portion and the lower portion of the magnet are embedded in the grooves.
The invention at least comprises the following beneficial effects: the invention provides a magnetic quenching device constructed by utilizing a halbach array mode. The halbach is a special multi-block magnet placement mode, through the special placement mode, magnetic fields in the magnet rings can be distributed differently in different places and can be directed towards a certain direction (or directions), the halbach array structure is arranged around the terminals through the contact pairs of the high-voltage electric connector, no magnetic leakage exists, the field intensity of a magnetization area is extremely high and uniform, no magnetic field blind area exists, the arranged halbach array enables magnetic fields which are distributed uniformly and have the same intensity in an electric arc area, and the problem that the arc extinguishing speed is slow due to the fact that the magnetic fields are uneven due to the fact that only two pairs of magnets are used in the prior art is solved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
FIG. 1 is a schematic diagram of one configuration of the magnetic quenching type high voltage electrical connector;
fig. 2 is a schematic diagram of a front structure of the annular halbach array structure;
fig. 3 is a schematic top view of the circular halbach array structure;
FIG. 4 is a schematic diagram of another structure of the magnetic quenching type high-voltage electric connector;
FIG. 5 is a schematic structural view of the upper clip member;
fig. 6 is a schematic structural diagram of the three-terminal hvth connector in the related art.
The specific embodiment is as follows:
the present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Fig. 1 to 5 show a magnetic quenching type high-voltage electrical connector of the present invention, which includes a first terminal 5 and a second terminal 6 constituting a contact pair, a plurality of magnets 7 are provided around the contact pair, and a halbach array structure is constituted by a plurality of the magnets 7.
In the technical scheme, the halbach array structure is arranged around the contact pair terminals of the high-voltage electric connector, so that when the first terminal and the second terminal are inserted, the air ionization path between the first terminal and the second terminal is lengthened due to the action of the Lorentz force, and the electric arc loses the ignition condition and delays ignition; the first terminal and the second terminal are inserted into each other without generating arc or generating arc only in a very short time; when the first terminal and the second terminal are separated, the arc generated between the first terminal and the second terminal is rapidly prolonged due to the action of Lorentz force, so that the ignited arc is rapidly cooled and extinguished; and through setting up halbach array, make have evenly distributed and intensity unanimous magnetic field in the electric arc region, overcome the problem that the mutual interference between two pairs of magnet causes the magnetic field inhomogeneous and the arc extinguishing speed is slow among the prior art.
In the above technical solution, as shown in fig. 1 to 3, a plurality of magnets 7 form an annular halbach array structure, the first terminal 5 is disposed in the first terminal housing 51 of the electrical connector, the second terminal 6 is disposed in the second terminal housing 61 of the electrical connector, a plurality of magnets 7 are inlaid in the second terminal housing 61 and form an annular halbach array structure, and the top of the second terminal 6 is located in a circle of the annular halbach array structure formed by the plurality of magnets 7. By means of the mode, magnetic fields in the ring can be distributed differently in different places, the magnetic field direction can face to a certain direction (or a plurality of directions), and the ring-shaped halbach array is arranged, so that the magnetic fields which are distributed uniformly and have the same strength in an arc area are formed, and the problems of nonuniform magnetic field and slow arc extinguishing speed caused by mutual interference between two pairs of magnets in the prior art are solved.
In the above technical solution, as shown in fig. 4, a plurality of magnets form a linear halbach array structure, the first terminal 5 is disposed in a first terminal 51 housing of the electrical connector, the second terminal 6 is disposed in a second terminal housing 61 of the electrical connector, a plurality of magnets 7 are inlaid in the second terminal housing 61 and form a linear halbach array structure, the linear halbach array structure is located at two sides of the second terminal 6, and by setting the linear halbach array, a magnetic field with uniform distribution and uniform intensity is formed in an arc area, so that the problem of slow arc extinguishing speed caused by nonuniform magnetic field due to only two pairs of magnets in the prior art is solved.
In the above technical solution, the first terminal 5 and the second terminal 6 are each any one of a circular terminal, a square terminal, a hexagonal terminal, a rectangular terminal, a triangular terminal, and a trapezoidal terminal.
In the above technical solution, the magnet is any object that can generate magnetic force.
In the above technical scheme, the magnet is any one of neodymium iron boron magnet, ferrite and magnetic steel, and in this way, a uniform and extremely high magnetic field area can be formed.
In the above-described technical solution, the plurality of magnets 7 are connected inside the second terminal housing 61 by the annular magnet fixing member 8; the annular magnet fixing piece 8 is internally provided with a plurality of slidable upper clamping pieces 81 and lower clamping pieces 82, the upper clamping pieces 81 and the lower clamping pieces 82 are mutually matched to clamp and fix the magnet 7, in this way, the upper clamping pieces 81 and the lower clamping pieces 82 which are slidable can be adjusted according to different terminal structures, how many magnets are embedded in the upper clamping pieces 81 and the lower clamping pieces 82 are adjusted to be connected to the connector, the magnetic field directions on the two terminals are adjusted, and the more far away an arc generated on the terminals is, the easier the arc is extinguished.
In the above technical solution, as shown in fig. 2 to 3, the slidable connection manner of the upper clamping member 81 and the lower clamping member 82 with the ring magnet fixing member 8 is as follows: an annular sliding rail (not shown) is arranged in the annular magnet fixing piece 8, and sliding blocks (not shown) matched with the annular sliding rail are arranged on the upper clamping piece 81 and the lower clamping piece 82; limiting blocks 83 are arranged on two sides of the upper clamping piece 81 or the lower clamping piece 82 on the sliding rail, in this way, the sliding of the upper clamping piece 81 and the lower clamping piece 82 can be more flexible, and the upper clamping piece 81 and the lower clamping piece 82 with the determined sliding positions can be fixed through the limiting blocks 83.
In the above technical solution, as shown in fig. 5, the upper clamping member 81 and the lower clamping member 82 are respectively provided with a groove 84, and the upper portion and the lower portion of the magnet 7 are embedded in the grooves 84, so that the fixing of the magnet 7 is more stable.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. The application, modification and variation of the magnetic quenching type high voltage electrical connector of the present invention will be apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (3)
1. The magnetic quenching type high-voltage electric connector comprises a first terminal and a second terminal which form a contact pair, and is characterized in that a plurality of magnets are arranged around the contact pair, and the magnets form a halbach array structure;
a plurality of magnets form an annular halbach array structure;
the first terminal is arranged in a first terminal shell of the electric connector, the second terminal is arranged in a second terminal shell of the electric connector, the plurality of magnets are embedded in the second terminal shell and form an annular halbach array structure, and the top of the second terminal is positioned in a circle of the annular halbach array structure;
the plurality of magnets are connected in the second terminal housing by a ring magnet mount; the annular magnet fixing piece is internally provided with a plurality of upper clamping pieces and lower clamping pieces which can slide, and the upper clamping pieces and the lower clamping pieces are matched with each other to clamp and fix the magnet;
the upper clamping piece, the lower clamping piece and the annular magnet fixing piece are slidably connected in the following manner: an annular sliding rail is arranged in the annular magnet fixing piece, and sliding blocks matched with the annular sliding rail are arranged on the upper clamping piece and the lower clamping piece; limiting blocks are arranged on two sides of the upper clamping piece or the lower clamping piece on the sliding rail; grooves are formed in the upper clamping piece and the lower clamping piece, and the upper part and the lower part of the magnet are embedded in the grooves;
the first terminal and the second terminal are any one of a round terminal, a square terminal, a hexagonal terminal, a rectangular terminal, a triangular terminal and a trapezoid terminal.
2. The magnetic blowout type high voltage electrical connector of claim 1 wherein the magnet is any object that can create a magnetic force.
3. The magnetic blowout type high voltage electrical connector of claim 2, wherein the magnet is any one of neodymium-iron-boron magnet, ferrite, and magnetic steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224463.6A CN107809034B (en) | 2017-11-29 | 2017-11-29 | Magnetic blowout type high-voltage electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224463.6A CN107809034B (en) | 2017-11-29 | 2017-11-29 | Magnetic blowout type high-voltage electric connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107809034A CN107809034A (en) | 2018-03-16 |
| CN107809034B true CN107809034B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711224463.6A Active CN107809034B (en) | 2017-11-29 | 2017-11-29 | Magnetic blowout type high-voltage electric connector |
Country Status (1)
| Country | Link |
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| CN (1) | CN107809034B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675036A (en) * | 2021-09-15 | 2021-11-19 | 天津工业大学 | Vacuum arc-extinguishing chamber contact structure with embedded Halbach array permanent magnet ring |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200187813Y1 (en) * | 1999-12-01 | 2000-07-15 | 김준호 | Solenoid valae |
| CN203103563U (en) * | 2013-02-04 | 2013-07-31 | 四川华丰企业集团有限公司 | High-voltage electric connector adopting magnetic quenching |
| CN103326177A (en) * | 2013-06-03 | 2013-09-25 | 四川永贵科技有限公司 | Magnetic quenching type high voltage electric connector |
| CN104167893A (en) * | 2013-05-17 | 2014-11-26 | 胡宪文 | Axial direction magnetic flux type electric generator |
| CN104303248A (en) * | 2012-04-26 | 2015-01-21 | 株式会社东芝 | Operation mechanism and power switch device provided with same |
| CN207490193U (en) * | 2017-11-29 | 2018-06-12 | 绵阳旭立辰科技有限公司 | Magnetic quenching formula high-voltage electric connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080121515A1 (en) * | 2006-11-27 | 2008-05-29 | Seagate Technology Llc | Magnetron sputtering utilizing halbach magnet arrays |
-
2017
- 2017-11-29 CN CN201711224463.6A patent/CN107809034B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200187813Y1 (en) * | 1999-12-01 | 2000-07-15 | 김준호 | Solenoid valae |
| CN104303248A (en) * | 2012-04-26 | 2015-01-21 | 株式会社东芝 | Operation mechanism and power switch device provided with same |
| CN203103563U (en) * | 2013-02-04 | 2013-07-31 | 四川华丰企业集团有限公司 | High-voltage electric connector adopting magnetic quenching |
| CN104167893A (en) * | 2013-05-17 | 2014-11-26 | 胡宪文 | Axial direction magnetic flux type electric generator |
| CN103326177A (en) * | 2013-06-03 | 2013-09-25 | 四川永贵科技有限公司 | Magnetic quenching type high voltage electric connector |
| CN207490193U (en) * | 2017-11-29 | 2018-06-12 | 绵阳旭立辰科技有限公司 | Magnetic quenching formula high-voltage electric connector |
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| Publication number | Publication date |
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| CN107809034A (en) | 2018-03-16 |
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Effective date of registration: 20231030 Address after: No. 9 Mian Silk Road, Shitang Town, Fucheng District, Dongguan City, Guangdong Province, 523000 Applicant after: Xulichen New Energy (Dongguan) Co.,Ltd. Address before: 621000 No. 9, Mianjuan Road, Shitang Town, Fucheng District, Mianyang City, Sichuan Province Applicant before: MIANYANG FOREVER STAR TECHNOLOGY CO.,LTD. |
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