CN112582205A - Reinforcing rib capable of enhancing switching-on and switching-off magnetic field - Google Patents
Reinforcing rib capable of enhancing switching-on and switching-off magnetic field Download PDFInfo
- Publication number
- CN112582205A CN112582205A CN202011572025.0A CN202011572025A CN112582205A CN 112582205 A CN112582205 A CN 112582205A CN 202011572025 A CN202011572025 A CN 202011572025A CN 112582205 A CN112582205 A CN 112582205A
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- Prior art keywords
- reinforcing rib
- magnetic field
- switching
- enhancing
- reinforcing
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- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 57
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 22
- 239000000696 magnetic material Substances 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 description 14
- 230000007935 neutral effect Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a reinforcing rib capable of enhancing a switching-off magnetic field. The invention comprises a reinforcing rib made of soft magnetic material; the reinforcing ribs are provided with through grooves. The invention has the advantages of enhancing the breaking magnetic field, improving the breaking capacity of the vacuum arc-extinguishing chamber and further realizing the miniaturization of the vacuum arc-extinguishing chamber.
Description
Technical Field
The invention relates to the technical field of vacuum arc-extinguishing chambers, in particular to a reinforcing rib capable of enhancing a switching-off magnetic field.
Background
A vacuum arc-extinguishing chamber, also known as a vacuum switch tube, is a core component of a medium-high voltage power switch, and has the main functions of rapidly extinguishing arc and inhibiting current after a medium-high voltage circuit is cut off a power supply through excellent vacuum insulation in the vacuum arc-extinguishing chamber, so that accidents and accidents are avoided. The development history of the vacuum arc-extinguishing chamber is essentially the development history of contact materials, arc-extinguishing chamber structures, manufacturing processes and the like.
At present, the vacuum arc-extinguishing chamber is developing to low resistance, miniaturization, large capacity and the like, and the continuous optimization and improvement of the electrode structure of the vacuum arc-extinguishing chamber is also a very important aspect.
Disclosure of Invention
The invention aims to provide a reinforcing rib capable of enhancing a breaking magnetic field. The invention has the advantages of enhancing the breaking magnetic field, improving the breaking capacity of the vacuum arc-extinguishing chamber and further realizing the miniaturization of the vacuum arc-extinguishing chamber.
The invention adopts the following technical scheme to realize the purpose of the invention:
a reinforcing rib capable of enhancing a switching-off magnetic field comprises a reinforcing rib made of soft magnetic materials; the reinforcing ribs are provided with through grooves.
In the reinforcing rib capable of enhancing the switching-off magnetic field, the upper end surface and the lower end surface of the reinforcing rib are respectively provided with a groove.
In the reinforcing rib capable of enhancing the switching-off magnetic field, the grooves on the upper end surface and the lower end surface of the reinforcing rib are arranged in a staggered manner.
In the reinforcing rib capable of enhancing the switching-off magnetic field, 8-36 grooves are formed in the upper end surface or the lower end surface of the reinforcing rib.
In the above-described reinforcing rib capable of enhancing the off-state magnetic field, the outer shape of the reinforcing rib is formed in a C-shape.
In the aforementioned reinforcing bar capable of enhancing the breaking magnetic field, the soft magnetic material is electrical pure iron.
Compared with the prior art, the invention has the following beneficial effects:
1. the electrode is provided with the reinforcing ribs made of soft magnetic materials such as electrician pure iron, and the reinforcing ribs can generate an induction magnetic field under the action of the switching-off current when the electrode is switched off, so that the effects of enhancing the switching-off magnetic field and improving the switching-off capacity of the vacuum arc-extinguishing chamber are achieved.
2. When the reinforcing rib is used for the cup-shaped longitudinal magnetic electrode system, compared with the traditional cup-shaped longitudinal magnetic electrode, the breaking magnetic field can be increased by 10-30%, which means that the electrode with the same size can break larger current after being provided with the reinforcing rib structure, so that the miniaturization of the arc extinguish chamber can be further realized.
In summary, the following steps: the invention has the advantages of enhancing the breaking magnetic field, improving the breaking capacity of the vacuum arc-extinguishing chamber and further realizing the miniaturization of the vacuum arc-extinguishing chamber.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of the structure of an electrode;
fig. 4 is a schematic view of a structure of a vacuum interrupter to which the present invention is applied;
FIG. 5 is a schematic diagram of a conventional stiffener contact system;
FIG. 6 is a schematic diagram of the novel stiffener contact system;
FIG. 7 is a cloud of induced magnetic fields at the neutral plane of a conventional stiffener contact system;
FIG. 8 is a cloud of the neutral plane induced magnetic field of the novel stiffener contact system;
FIG. 9 is a graph of the peak induced magnetic field in a straight line on the neutral plane of a conventional stiffener contact system;
figure 10 is a graph of the peak induced magnetic field in a line on the neutral plane of the novel stiffener contact system.
Reference numerals: 1-reinforcing rib and 2-through groove; 3-a groove; 4-moving electrode; 5-a static electrode; 6-electrode structure; 7-a coil; 8-a contact; 9-a housing; 10-moving end cap; 11-stationary end cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Examples are given. A strengthening rib capable of enhancing a switching-off magnetic field is structurally shown in figures 1-4 and comprises a strengthening rib 1 made of soft magnetic materials; and the reinforcing ribs 1 are provided with through grooves 2.
And grooves 3 are formed in the upper end surface and the lower end surface of the reinforcing rib 1.
The grooves 3 on the upper end surface and the lower end surface of the reinforcing rib 1 are arranged in a staggered mode.
The upper end surface or the lower end surface of the reinforcing rib 1 is provided with 8-36 grooves 3. The number of the grooves 3 of the reinforcing rib 1 is mainly limited by the size of the inner diameter and the outer diameter of the reinforcing rib 1, and the reinforcing effect of the grooves 3 with too few magnetic fields is limited; too many settings are of little significance and the cost is increased. The structural size and the grooving number of the specific reinforcing rib 1 can be optimized by computer software simulation to obtain the best result.
The shape of the reinforcing rib 1 is C-shaped.
The soft magnetic material is electrician pure iron.
The reinforcing rib is suitable for an electrode mechanism 6 of a vacuum arc-extinguishing chamber, and as shown in figure 4, after the reinforcing rib is used, the vacuum arc-extinguishing chamber comprises a shell 9, one end of the shell 9 is connected with a movable end cover 10, and the other end of the shell is connected with a static end cover 11; the moving end cover 10 is internally provided with a moving electrode 4; a static electrode 5 is arranged in the static end cover 11; the adjacent end of the moving electrode 4 and the static electrode 3 is provided with an electrode structure 6, the electrode structure 6 comprises a coil 7, the coil 7 is connected with a contact 8, and a reinforcing rib 1 is arranged between the coil 7 and the contact 8.
The working principle of the invention is as follows: the reinforcing rib 1 is processed by soft magnetic materials such as electrician pure iron, and the annular reinforcing rib 1 is divided into a C-shaped structure by the through groove 2, so that the reinforcing rib 1 becomes an electromagnet, and the opening part divided by the through groove 2 becomes two poles of the electromagnet. The moving electrode 4 and the static electrode 5 in this embodiment are cup-shaped longitudinal magnetic electrodes, the reinforcing rib 1 mainly plays a supporting role therein, and when the electrodes cut off the current, the reinforcing rib 1 can generate an induction magnetic field under the action of the cut-off current, so that the reinforcing rib 1 can play a role in enhancing the cut-off magnetic field and improving the cut-off capability of the vacuum arc-extinguishing chamber in the vacuum arc-extinguishing chamber.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof should be equivalent or changed within the scope of the present invention.
Examples of the experiments.
The recording and results of the partial experimental process analyzed by ansys software for the comparison of the contact system with 74mm diameter of the new reinforcing rib and the contact with the common reinforcing rib are as follows:
FIG. 5 is a diagram of a conventional stiffener contact system;
FIG. 6 is a diagrammatic view of a novel stiffener contact system; the total number of the grooves of the reinforcing ribs is 24, and 14 grooves are arranged on one surface of the reinforcing rib;
FIG. 7 is a cloud of induced magnetic fields at the neutral plane of a conventional stiffener contact system;
FIG. 8 is a cloud of the neutral plane induced magnetic field of the novel stiffener contact system;
FIG. 9 is a graph of the peak induced magnetic field in a straight line on the neutral plane of a conventional stiffener contact system;
figure 10 is a graph of the peak induced magnetic field in a line on the neutral plane of the novel stiffener contact system;
as can be seen from the graphs of fig. 9 and 10, the induced magnetic field strength of the conventional stiffener contact system is about 0.146, while the induced magnetic field strength of the novel stiffener contact system is about 0.168. In the experiment, the induction magnetic field intensity can be enhanced by about 15% after the novel reinforcing rib structure is adopted.
Claims (6)
1. The utility model provides a can strengthen strengthening rib that cuts off magnetic field which characterized in that: comprises a reinforcing rib (1) made of soft magnetic material; the reinforcing ribs (1) are provided with through grooves (2).
2. A reinforcing bar capable of enhancing a switching-off magnetic field according to claim 1, wherein: and grooves (3) are formed in the upper end surface and the lower end surface of the reinforcing rib (1).
3. A reinforcing bar capable of enhancing a switching-off magnetic field according to claim 2, wherein: the grooves (3) on the upper end face and the lower end face of the reinforcing rib (1) are arranged in a staggered mode.
4. A reinforcing bar capable of enhancing a switching-off magnetic field according to claim 2, wherein: the upper end surface or the lower end surface of the reinforcing rib (1) is provided with 8-36 grooves (3).
5. A reinforcing bar capable of enhancing a switching-off magnetic field according to claim 1, wherein: the shape of the reinforcing rib (1) is C-shaped.
6. A reinforcing bar capable of enhancing a switching-off magnetic field according to claim 1, wherein: the soft magnetic material is electrician pure iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011572025.0A CN112582205A (en) | 2020-12-27 | 2020-12-27 | Reinforcing rib capable of enhancing switching-on and switching-off magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011572025.0A CN112582205A (en) | 2020-12-27 | 2020-12-27 | Reinforcing rib capable of enhancing switching-on and switching-off magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112582205A true CN112582205A (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011572025.0A Pending CN112582205A (en) | 2020-12-27 | 2020-12-27 | Reinforcing rib capable of enhancing switching-on and switching-off magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112582205A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
| DE102006024247A1 (en) * | 2006-05-23 | 2007-11-29 | Denso Corp., Kariya | Antenna coil for communication module, has flat coil body whose thickness is in coil body axial direction, where coil carrier construction unit is arranged between substrate and coil body, which is carried on substrate surface |
| US20080290068A1 (en) * | 2007-05-22 | 2008-11-27 | Schneider Electric Industries Sas | Arc chute and circuit breaker equipped with one such arc chute |
| CN202178204U (en) * | 2011-08-02 | 2012-03-28 | 厦门市聚力电力设备有限公司 | Contact device for vacuum switch |
| CN103551575A (en) * | 2013-10-31 | 2014-02-05 | 福达合金材料股份有限公司 | Preparation method of soft magnetic electrical contact material with self-arc-quenching characteristic and product obtained by same |
| CN204303665U (en) * | 2014-12-09 | 2015-04-29 | 陕西宝光真空电器股份有限公司 | Magnetism gathering rings structure in vacuum interrupter |
| CN107342186A (en) * | 2017-07-20 | 2017-11-10 | 中国电力科学研究院 | A kind of adjustable rotary magnetic field vacuum interrupter |
| CN208271718U (en) * | 2018-06-26 | 2018-12-21 | 北流市柯顺电子有限公司 | A kind of mutual inductor reducing magnetic interference |
| CN214624867U (en) * | 2020-12-27 | 2021-11-05 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Reinforcing rib capable of enhancing switching-on and switching-off magnetic field |
-
2020
- 2020-12-27 CN CN202011572025.0A patent/CN112582205A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
| DE102006024247A1 (en) * | 2006-05-23 | 2007-11-29 | Denso Corp., Kariya | Antenna coil for communication module, has flat coil body whose thickness is in coil body axial direction, where coil carrier construction unit is arranged between substrate and coil body, which is carried on substrate surface |
| US20080290068A1 (en) * | 2007-05-22 | 2008-11-27 | Schneider Electric Industries Sas | Arc chute and circuit breaker equipped with one such arc chute |
| CN202178204U (en) * | 2011-08-02 | 2012-03-28 | 厦门市聚力电力设备有限公司 | Contact device for vacuum switch |
| CN103551575A (en) * | 2013-10-31 | 2014-02-05 | 福达合金材料股份有限公司 | Preparation method of soft magnetic electrical contact material with self-arc-quenching characteristic and product obtained by same |
| CN204303665U (en) * | 2014-12-09 | 2015-04-29 | 陕西宝光真空电器股份有限公司 | Magnetism gathering rings structure in vacuum interrupter |
| CN107342186A (en) * | 2017-07-20 | 2017-11-10 | 中国电力科学研究院 | A kind of adjustable rotary magnetic field vacuum interrupter |
| CN208271718U (en) * | 2018-06-26 | 2018-12-21 | 北流市柯顺电子有限公司 | A kind of mutual inductor reducing magnetic interference |
| CN214624867U (en) * | 2020-12-27 | 2021-11-05 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Reinforcing rib capable of enhancing switching-on and switching-off magnetic field |
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