CN108417422B - Arc extinguishing device - Google Patents
Arc extinguishing device Download PDFInfo
- Publication number
- CN108417422B CN108417422B CN201810217987.0A CN201810217987A CN108417422B CN 108417422 B CN108417422 B CN 108417422B CN 201810217987 A CN201810217987 A CN 201810217987A CN 108417422 B CN108417422 B CN 108417422B
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- plate
- arc extinguishing
- grid
- extinguishing device
- arc
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- 238000005192 partition Methods 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 210000003934 vacuole Anatomy 0.000 description 1
Images
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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an arc extinguishing device which comprises a side plate with an opening at one side and an accommodating space inside, wherein a first grid sheet made of insulating materials is arranged in the side plate, the first grid sheet at least comprises a plurality of partition plates arranged side by side, a cavity is formed between every two adjacent partition plates, a second grid sheet made of metal materials is arranged in the cavity, and two sides of the first grid sheet are respectively connected with an arc striking plate assembly. The invention has the beneficial effects that: compared with the traditional arc extinguishing device which totally adopts ceramic grid pieces, the arc extinguishing device reduces the quality of the arc extinguishing device, reduces overvoltage, reduces cost and reduces failure rate; compared with the traditional arc extinguishing device which totally adopts metal grid pieces, the volume of the arc extinguishing device is reduced, the frequent arc extinguishing capability is improved, the advantages of the arc extinguishing device and the arc extinguishing device are achieved, the defects of the arc extinguishing device and the arc extinguishing device are overcome, the arc extinguishing device is small in volume and light in weight, and the arc extinguishing capability is greatly enhanced due to the combination of two arc extinguishing modes.
Description
Technical Field
The invention belongs to the technical field of switching devices, and particularly relates to an arc extinguishing device.
Background
When a circuit is broken, an electric arc can be generated between two contacts of a commonly used switch electric appliance with the contacts, and if the electric arc is not extinguished in time, the circuit can be subjected to faults such as delayed disconnection, contact burning loss, overvoltage breakdown and the like, so that most of the switch electric appliances are provided with arc extinguishing devices.
The conventional arc extinguishing devices are roughly classified into a long arc extinguishing device and a short arc extinguishing device according to the arc extinguishing principle. The long arc extinguishing device mainly utilizes the cooling effect and the surface recombination effect to extinguish the electric arc by the close contact of the electric arc and the insulating material. The long-arc extinguishing device is commonly made of ceramic into an arc extinguishing device with gaps, and an arc is blown into the arc extinguishing device by using a magnetic blow coil, but the ceramic has larger deformation (a large plane ceramic shape is easy to warp, and a U-shaped arc extinguishing grid plate is easy to open too large), higher defective rate and larger quality in the processing process, and the arc extinguishing device is easy to crack in the transportation and use processes; and the ceramic arc-extinguishing device has strong dissociating action and is easy to generate larger overvoltage, and the phenomenon of electric arc reignition can be generated. The short arc extinguishing device mainly divides an electric arc into a plurality of short arcs connected in series through metal grid plates, and extinguishes the electric arc by utilizing voltage drops of a cathode and an anode. The short arc extinguishing device has the advantages that due to the phenomena of resistance, magnetic hysteresis, eddy current and the like of the grid plates, the temperature of the grid plates is often high, and the arc extinguishing capability of the short arc extinguishing device is weakened when the short arc extinguishing device is frequently operated; due to the limited voltage drop between the cathode and the anode, a larger number of metal grids are required when the arc voltage is higher, and the arc extinguishing device tends to be larger in size.
Aiming at the defects of the conventional arc-extinguishing device, an arc-extinguishing device with small volume, light weight, strong arc-extinguishing capability and low cost is very necessary to be designed.
Disclosure of Invention
The invention aims to provide an arc-extinguishing device which is small in size, light in weight and strong in arc-extinguishing capability.
The technical scheme adopted by the invention is as follows: the utility model provides an arc control device, includes that one side opening, inside have the curb plate of accommodation space, be provided with grid piece one in the curb plate, grid piece one includes a plurality of baffles that set up side by side at least, adjacent two vacuole formation between the baffle, be provided with grid piece two in the cavity, the both sides of grid piece one are connected with an arc striking board subassembly respectively.
The present invention is also characterized in that,
still including set up in the guard plate of curb plate opening part.
The first grid piece further comprises a flat plate, the flat plate is attached to one side wall of the side plate, and the plurality of partition plates are vertically arranged on the flat plate.
The first grid piece further comprises a clamping groove formed in the partition plate, a limiting device matched with the clamping groove is arranged on the second grid piece, and the second grid piece is fixed in the clamping groove of the first grid piece through the limiting device.
The partition plate is in a right trapezoid shape, and the inclined edge of the partition plate and the flat plate form an included angle of 100-170 degrees.
The second grid pieces are one or two combinations of flat plates and U-shaped grids.
And the second grid sheet is U-shaped, and two sides of the connecting end at the bottom of the second grid sheet are respectively provided with a notch.
The two notches are respectively deviated to two sides of the central line of the second grid plate, and the positions of the notches are staggered.
The side plate is provided with a first limiting table for limiting the protection plate at the position of the opening, the inner wall of the side plate is further provided with a second limiting table for limiting the first grid plate, and the second limiting table is provided with a slope forming an included angle of 120-170 degrees with the inner wall of the side plate.
The striking plate assembly comprises a large striking plate and a small striking plate which are connected together through a connecting piece, and the large striking plate is attached to the side wall of the side plate.
The invention has the beneficial effects that: compared with the traditional arc extinguishing device which totally adopts ceramic grid pieces, the arc extinguishing device reduces the quality of the arc extinguishing device, reduces overvoltage, reduces cost and reduces failure rate; compared with the traditional arc extinguishing device which totally adopts metal grid pieces, the volume of the arc extinguishing device is reduced, the frequent arc extinguishing capability is improved, the advantages of the arc extinguishing device and the arc extinguishing device are achieved, the defects of the arc extinguishing device and the arc extinguishing device are overcome, the arc extinguishing device is small in volume and light in weight, and the arc extinguishing capability is greatly enhanced due to the combination of two arc extinguishing modes.
Drawings
FIG. 1 is an isometric view of the overall construction of a preferred embodiment of the invention;
FIG. 2a is a front view of the overall structure of a preferred embodiment of the present invention;
FIG. 2b is a top view of the overall structure of a preferred embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the first side plate and the first grid plate of the present invention;
FIG. 4a is a schematic perspective view of the side panel of the present invention;
FIG. 4b is a side view of FIG. 4 a;
FIG. 5a is a schematic perspective view of a first grid of the present invention;
FIG. 5b is a schematic perspective view of a first grid according to the present invention;
FIG. 5c is a side view of a first grid of the present invention;
FIG. 6a is a schematic perspective view of a second grid of the present invention;
FIG. 6b is a front view of FIG. 6 a;
FIG. 7a is a schematic perspective view of an arc striking plate assembly according to the present invention;
fig. 7b is a side view of fig. 7 a.
In the figure, 1, a side plate, 2, a first grid sheet, 3, a second grid sheet, 4, a protection plate, 5, an arc striking plate assembly, 11, a second limiting table, 12, a first limiting table, 21, a flat plate, 22, a partition plate, 23, a clamping groove, 31, a gap, 32, a limiting device, 51, a large arc striking plate, 52, a small arc striking plate and 53 are connecting pieces.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2a and 2b, the arc extinguishing device provided by the present invention includes a side plate 1, a first grid 2 made of an insulating material, a second grid 3 made of a metal material, a protection plate 4 and an arc striking plate assembly 5; the side plate 1 can be the cuboid shape with an opening on one side as shown in fig. 1, the first grid sheet 2 is connected with the inner wall of the side plate 1, the grid sheet 1 at least comprises partition plates 22 arranged at intervals, a cavity is formed between every two adjacent partition plates 22, the second grid sheet 3 is arranged in the space formed by the first grid sheet 2, the limiting device 32 at the head of the second grid sheet 3 is arranged in a clamping groove 23 of the first grid sheet 2, the protection plate 4 is arranged inside the side plate 1 and at the tops of the first grid sheet 2 and the second grid sheet 3, and the arc striking plate component 5 is arranged inside the side plate 1 and at the two ends of the first grid sheet 2 and the second grid sheet 3.
As shown in fig. 3, the first grid pieces 2 are sequentially arranged inside the side plate 1 and are adhered to the inner wall of the side plate 1 through high temperature resistant glue. A cavity is formed between every two adjacent grid pieces I2, the grid pieces II 3 are arranged in the cavity, the protection plate 4 is arranged between the grid pieces I2 and the first limiting table 12 of the side plate 1, the outer sides of the two ends of the grid pieces I2 are respectively provided with an arc striking plate assembly 5, and the arc extinguishing device can be formed by connecting the arc striking plate assemblies to mounting holes in the side plate 1 through fasteners.
As shown in fig. 4a and 4b, a second limit table 11 for limiting the first grid sheet 2 and a first limit table 12 for limiting the protection plate 4 are arranged inside the side plate 1; the second stop 11 has a slope which forms an angle with the inner wall of the side plate 1, the angle being in the range of 120-170 deg.. The two sides of the side plate 1 are provided with snap fasteners, and the four corners of the side plate 1 are provided with through holes for connection; the side plate 1 material can be one or a combination of more of SMC, DMC, PF and urea-formaldehyde plastic.
As shown in fig. 5 a-5 c, one side of the first grid 2 is a flat plate 21, which is in contact with the side plate 1, and the other side is a partition plate 22; the upper part of the grid piece I2 is provided with two clamping grooves 23; the grid piece one 2 is made of insulating materials, preferably ceramics. The grid piece I2 has small deformation in the forming process, particularly reduces the phenomenon of overlarge opening of the traditional U-shaped ceramic grid piece, and greatly reduces the phenomena of poor matching and fracture when the grid piece is arranged between two side plates. In order to reduce the initial resistance of the electric arc entering the arc extinguishing device, the notches of two adjacent grid plates need to be staggered in the traditional U-shaped ceramic grid plate assembling process, so that the production efficiency is low; the grid piece I2 is adopted, and due to the structural limitation of the side plate 1 and the grid piece I2, notches can be automatically staggered during assembly, so that assembly errors can be basically eliminated, and the production efficiency is greatly improved.
The second grid 3 can be a flat plate or U-shaped. As shown in fig. 6a and 6b, the second grid 3 is preferably U-shaped in this embodiment; the upper part of the second grid 3 is provided with a limiting device 32 matched with the clamping groove 23; the lower part of the grid II 3 is provided with two notches 31; the shape of the notch 31 can be one or a combination of a plurality of triangular shapes, semicircular shapes and arc shapes, and the triangular shape is preferred; the notches 31 are respectively deviated to two sides of the central line of the second grid plate 3, and the two notches 31 are staggered with each other; the material of the grid plate II 3 can be a copper-plated steel plate, a nickel-plated steel plate, a zinc-plated steel plate, a pure copper plate and the like. The second grid sheet 3 can prevent the condition that the multi-section electric arc of the flat grid sheet partially moves forwards and partially moves backwards in the arc extinguishing process, so that the moving speed of the electric arc can be increased; the notch 31 can form magnetic flux with distorted magnetic circuit at the lower part of the grid plate, thereby generating attraction effect on the electric arc and being more beneficial to the electric arc entering the arc extinguishing device; the notches 31 are offset and staggered in sequence during installation, so that the number of the grids initially touched by the electric arc can be reduced, and the initial resistance of the arc extinguishing device is reduced. In the traditional flat grid plate, the initial resistance is larger when the electric arc enters the arc extinguishing device in the middle of the grid plate gap, and the installation of the grid plate gap offset person needs to pay attention to the sequential staggering of the adjacent grid plates, so that the production efficiency is lower; by adopting the second grid plate 3, during actual assembly, all the second grid plates 3 are inserted into the first grid plate 2 in the same direction, the limiting device 32 is clamped into the clamping groove 23 of the first grid plate 2, and all the notches 31 of the structure of the second grid plate 3 are automatically staggered, so that the assembly error rate is reduced, and the production efficiency is improved.
As shown in fig. 7a and 7b, the arc ignition plate assembly 5 comprises a large arc ignition plate 51 and a small arc ignition plate 52 which are connected through a connecting piece 53, wherein the large arc ignition plate 51 is contacted with the inner wall of the side plate 1; the large arc ignition plate 51 and the small arc ignition plate 52 are made of metal conductive material, preferably pure copper plate.
When the arc is actually extinguished, the arc is led into the arc extinguishing device through the arc striking plate assembly 5, the arc is firstly contacted with the grid piece II 3, the grid piece II 3 divides the arc into a plurality of short arcs connected in series, and the arc is extinguished by utilizing the voltage drop of the cathode and the anode. The electric arc moves towards the direction of the protection plate 4 on the surface of the grid piece two 3, if the electric arc is not extinguished when reaching the grid piece one 2, the electric arc is in close contact with the grid piece one 2, and secondary extinguishing of the electric arc is carried out by utilizing the cooling and surface composite action of the grid piece one 2. The protection plate 4 can reduce noise generated in the arc extinguishing process, can reduce pollution to the inside of the arc extinguishing device from the outside, and reduces diffusion of contact steam into air in the contact segmenting process.
Compared with the traditional arc extinguishing device which totally adopts ceramic grid plates, the invention reduces the quality of the arc extinguishing device, reduces the overvoltage, reduces the cost and reduces the failure rate; compared with the traditional arc extinguishing device which totally adopts metal grid plates, the invention reduces the volume of the arc extinguishing device and improves the frequent arc extinguishing capability, thereby having the advantages of the arc extinguishing device and overcoming the defects of the arc extinguishing device and the arc extinguishing device.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. An arc extinguishing device is characterized by comprising a side plate (1) with an opening on one side and an accommodating space inside, wherein a first grid plate (2) is arranged in the side plate (1), the first grid plate (2) at least comprises a plurality of partition plates (22) arranged side by side, a cavity is formed between every two adjacent partition plates (22), a second grid plate (3) is arranged in the cavity, and two sides of the first grid plate (2) are respectively connected with an arc striking plate assembly (5);
the first grid sheet (2) further comprises a flat plate (21), the flat plate (21) is attached to one side wall of the side plate (1), and the plurality of partition plates (22) are vertically arranged on the flat plate (21);
the grid piece I (2) further comprises a clamping groove (23) formed in the partition plate (22), a limiting device (32) matched with the clamping groove (23) is arranged on the grid piece II (3), and the grid piece II (3) is fixed in the clamping groove (23) of the grid piece I (2) through the limiting device (32).
2. An arc extinguishing device according to claim 1, further comprising a protective plate (4) provided at the opening of the side plate (1).
3. An arc extinguishing device according to claim 1, characterized in that the partition (22) is right-angled trapezoidal, the oblique side of the partition (22) forming an angle of 100 ° to 170 ° with the plate (21).
4. An arc extinguishing apparatus according to claim 1, wherein the second grid (3) is one or a combination of a flat plate and a U-shape.
5. An arc extinguishing apparatus according to claim 1, characterized in that the second grid (3) is U-shaped, and a notch (31) is provided on each side of the connecting end of the bottom.
6. An arc extinguishing apparatus according to claim 5, characterized in that the two notches (31) are respectively offset to the two sides of the center line of the second grid (3).
7. An arc extinguishing device according to claim 1, characterized in that the side plate (1) is provided with a first limit stop (12) for limiting the protection plate (4) at the position of the opening, the inner wall of the side plate (1) is further provided with a second limit stop (11) for limiting the first grid plate (2), and the second limit stop (11) is provided with a slope forming an included angle of 120-170 degrees with the inner wall of the side plate (1).
8. An arc extinguishing apparatus according to claim 1, characterized in that the arc striking plate assembly (5) comprises a large arc striking plate (51) and a small arc striking plate (52) which are connected together by a connecting piece (53), and the large arc striking plate (51) is attached to the side wall of the side plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217987.0A CN108417422B (en) | 2018-03-12 | 2018-03-12 | Arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217987.0A CN108417422B (en) | 2018-03-12 | 2018-03-12 | Arc extinguishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108417422A CN108417422A (en) | 2018-08-17 |
| CN108417422B true CN108417422B (en) | 2020-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810217987.0A Active CN108417422B (en) | 2018-03-12 | 2018-03-12 | Arc extinguishing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108417422B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808135B (en) * | 2019-10-16 | 2021-04-09 | 广西大学 | A tandem arc extinguishing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000514596A (en) * | 1996-07-15 | 2000-10-31 | シーメンス アクチエンゲゼルシヤフト | Arc extinguishing chamber for low pressure circuit breaker |
| CN201877322U (en) * | 2010-12-10 | 2011-06-22 | 武汉长海电气科技开发有限公司 | Switch electric appliance arc extinguishing chamber |
| CN201910384U (en) * | 2010-07-20 | 2011-07-27 | 中国船舶重工集团公司第七一二研究所 | Arc extinguish chamber of direct-current quick breaker |
| CN201927507U (en) * | 2010-07-05 | 2011-08-10 | Abb股份公司 | Arc extinction slice assembly and installation switchgears with same |
| CN202373490U (en) * | 2011-12-27 | 2012-08-08 | 施耐德电器工业公司 | Arc extinguish chamber for air circuit breaker |
| CN203983210U (en) * | 2014-08-18 | 2014-12-03 | 德力西电气有限公司 | A kind of arc-control device of miniature circuit breaker |
| CN204809069U (en) * | 2015-06-12 | 2015-11-25 | 西安开天铁路电气股份有限公司 | Contactor is with ceramic labyrinth arc -extinguish chamber |
-
2018
- 2018-03-12 CN CN201810217987.0A patent/CN108417422B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000514596A (en) * | 1996-07-15 | 2000-10-31 | シーメンス アクチエンゲゼルシヤフト | Arc extinguishing chamber for low pressure circuit breaker |
| CN201927507U (en) * | 2010-07-05 | 2011-08-10 | Abb股份公司 | Arc extinction slice assembly and installation switchgears with same |
| CN201910384U (en) * | 2010-07-20 | 2011-07-27 | 中国船舶重工集团公司第七一二研究所 | Arc extinguish chamber of direct-current quick breaker |
| CN201877322U (en) * | 2010-12-10 | 2011-06-22 | 武汉长海电气科技开发有限公司 | Switch electric appliance arc extinguishing chamber |
| CN202373490U (en) * | 2011-12-27 | 2012-08-08 | 施耐德电器工业公司 | Arc extinguish chamber for air circuit breaker |
| CN203983210U (en) * | 2014-08-18 | 2014-12-03 | 德力西电气有限公司 | A kind of arc-control device of miniature circuit breaker |
| CN204809069U (en) * | 2015-06-12 | 2015-11-25 | 西安开天铁路电气股份有限公司 | Contactor is with ceramic labyrinth arc -extinguish chamber |
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| Publication number | Publication date |
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| CN108417422A (en) | 2018-08-17 |
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Denomination of invention: An arc extinguishing device Effective date of registration: 20220708 Granted publication date: 20200320 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN KAITIAN RAILWAY ELECTRICAL Co.,Ltd. Registration number: Y2022610000387 |
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Denomination of invention: An arc extinguishing device Effective date of registration: 20230109 Granted publication date: 20200320 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN KAITIAN RAILWAY ELECTRICAL Co.,Ltd. Registration number: Y2023610000028 |
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