CN220065488U - Arc extinguishing device and direct current switch - Google Patents
Arc extinguishing device and direct current switch Download PDFInfo
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- CN220065488U CN220065488U CN202320509407.1U CN202320509407U CN220065488U CN 220065488 U CN220065488 U CN 220065488U CN 202320509407 U CN202320509407 U CN 202320509407U CN 220065488 U CN220065488 U CN 220065488U
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- arc extinguishing
- arc
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- insulation
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- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 2
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides an arc extinguishing device and direct current switch, direct current switch includes arc extinguishing device, arc extinguishing device include the arc extinguishing cavity, set up the arc extinguishing structure in the arc extinguishing cavity and with the gas vent of arc extinguishing cavity intercommunication, the arc extinguishing structure includes a plurality of arc extinguishing bars piece that range upon range of setting, is equipped with the arc extinguishing passageway between every adjacent two arc extinguishing bars piece, be equipped with insulation structure between gas vent and the arc extinguishing structure, insulation structure includes a plurality of insulating bars pieces that range upon range of setting, is equipped with insulating passageway between every adjacent two insulating bars piece, insulating passageway's both ends set up relatively with gas vent and corresponding arc extinguishing passageway respectively, and insulation structure not only can prevent electric arc at arc extinguishing passageway rear end short circuit, does benefit to electric arc to elongate under magnetic blow and air blowing power influence moreover.
Description
Technical Field
The utility model relates to the field of piezoelectric devices, in particular to an arc extinguishing device and a direct current switch.
Background
With the continuous improvement of the power of new energy automobiles, the existing fuses and direct current relays can not reliably provide effective protection for high-power batteries and inverter systems, and particularly when overload or short-circuit faults occur, the generated electric arcs are easy to ablate or even damage the switching electric appliances. Although there are various ways to increase the arc extinguishing capability, the volume of the arc extinguishing device is often increased, and it is difficult to ensure that the volume of the switching device is not increased. In addition, it is also necessary to prevent charged particles generated by an arc and cooling air from entering other mechanisms, and to prevent other mechanisms from being damaged.
Disclosure of Invention
The utility model aims to overcome at least one defect in the prior art and provides an arc extinguishing device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an arc extinguishing device, includes the arc extinguishing cavity, sets up the arc extinguishing structure in the arc extinguishing cavity and with the gas vent of arc extinguishing cavity intercommunication, the arc extinguishing structure includes a plurality of arc extinguishing bars piece that range upon range of setting, is equipped with the arc extinguishing passageway between every adjacent two arc extinguishing bars piece, be equipped with insulation structure between gas vent and the arc extinguishing structure, insulation structure includes a plurality of insulating bars pieces that range upon range of setting, is equipped with insulating passageway between every adjacent two insulating bars piece, the both ends of insulating passageway set up relatively with gas vent and corresponding arc extinguishing passageway respectively.
Preferably, a plurality of insulation channels of the insulation structure are arranged in one-to-one correspondence with a plurality of arc extinguishing channels of the arc extinguishing structure.
Preferably, a filter screen is arranged between the insulating structure and the exhaust port, filter holes are formed in the filter screen, and the filter screen is perpendicular to the insulating grid.
Preferably, the arc extinguishing structure comprises two first side plates which are oppositely arranged, a plurality of arc extinguishing grid sheets are arranged between the two first side plates, and two sides of the arc extinguishing grid sheets are respectively connected with the two first side plates.
Preferably, the insulation structure comprises a second side plate, and the same sides of the plurality of insulation grid sheets are respectively connected with the second side plate.
Preferably, the thickness D1 of the arc-extinguishing gate sheet is equal to the thickness D2 of the corresponding insulating gate sheet, and the insulating gate sheets and the arc-extinguishing gate sheets are arranged in one-to-one correspondence.
Preferably, the length L1 of the arc extinguishing gate sheet is greater than the length L2 of the corresponding insulating gate sheet.
The utility model also provides a direct current switch, which comprises a contact module, wherein the contact module comprises a shell, a moving contact, a fixed contact and the arc extinguishing device, wherein the moving contact, the fixed contact and the arc extinguishing device are respectively arranged in the shell, an arc extinguishing cavity of the arc extinguishing device is formed by the shell, and the exhaust port is arranged on the shell.
Preferably, an arc striking piece is arranged in the contact module, the arc striking piece comprises a first arc striking part and a second arc striking part which are connected in sequence, the first arc striking part is matched with the static contact, and the second arc striking part is laminated with the arc extinguishing grid piece.
Preferably, the insulating structure is integrally formed with the housing.
According to the arc extinguishing device, the insulation structure is arranged between the arc extinguishing structure and the exhaust port, so that the arc can be prevented from being short-circuited at the rear end of the arc extinguishing channel through the insulation structure, the insulation channel is arranged corresponding to the arc extinguishing channel, the insulation channel can be prevented from blocking gas flow in the arc extinguishing channel, the arc at the rear end of the arc extinguishing channel can be lengthened under the influence of magnetic blowing and air blowing force, and the root of the arc is still positioned on the arc extinguishing structure, so that the arc can be further lengthened, the arc voltage is further improved, and a stronger arc extinguishing effect is realized.
In addition, be equipped with filter screen piece between insulation system and the gas vent, be equipped with the filtration pore on filter screen piece, filter screen piece with the perpendicular setting of insulating grid piece, filter screen piece is used for filtering charged particle and cooling air.
According to the direct current switch, the arc generated on the moving contact and the fixed contact is extinguished through the arc extinguishing device, so that the breaking capacity of the contact module can be improved.
Drawings
FIG. 1 is a schematic diagram of a DC switch of the present utility model;
fig. 2 is a schematic structural view of an arc extinguishing device according to the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2 in accordance with the present utility model;
fig. 4 is a side view of the arc extinguishing device of the present utility model;
fig. 5 is a schematic diagram of the cooperation of the arc extinguishing gate and the insulating gate according to the present utility model;
in the figure, 1, an arc extinguishing structure; 11. arc extinguishing grid plates; 10. arc extinguishing channel; 2. an exhaust port; 3. an insulating structure; 31. an insulating gate sheet; 30. an insulating channel; 4. a contact module; 40. a housing; 41. a moving contact; 42. a stationary contact; 43. a first arc striking part; 44. a second arc striking part; 45. a third arc striking part; 5. a filter screen; 50. a filter hole; 12. a first side plate; 32. and a second side plate.
Detailed Description
The following examples are given in connection with the accompanying drawings to further illustrate specific embodiments of the arc extinguishing device of the present utility model. The arc extinguishing device of the present utility model is not limited to the description of the following embodiments.
As shown in fig. 1-2 and 5, the arc extinguishing device of the utility model comprises an arc extinguishing cavity, an arc extinguishing structure 1 arranged in the arc extinguishing cavity and an exhaust port 2 communicated with the arc extinguishing cavity, wherein the arc extinguishing structure 1 comprises a plurality of arc extinguishing grid plates 11 which are arranged in a laminated mode, an arc extinguishing channel 10 is arranged between every two adjacent arc extinguishing grid plates 11, an insulating structure 3 is arranged between the exhaust port 2 and the arc extinguishing structure 1, the insulating structure 3 comprises a plurality of insulating grid plates 31 which are arranged in a laminated mode, and an insulating channel 30 is arranged between every two adjacent insulating grid plates 31.
Preferably, a plurality of insulating channels 30 of the insulating structure 3 are arranged in one-to-one correspondence with a plurality of arc extinguishing channels 10 of the arc extinguishing structure 1, and two ends of the insulating channels 30 are respectively arranged opposite to the exhaust port 2 and the corresponding arc extinguishing channels 10. For example, as another embodiment, only a part of the arc extinguishing passage 10 may correspond to the insulating passage 30.
According to the arc extinguishing device, the insulation structure 3 is arranged between the arc extinguishing structure 1 and the exhaust port 2, so that the arc can be prevented from being short-circuited at the rear end of the arc extinguishing channel 10 through the insulation structure 3, the insulation channel 30 is arranged corresponding to the arc extinguishing channel 10, the situation that the insulation channel 30 blocks the gas flow in the arc extinguishing channel 10 can be avoided, the arc at the rear end of the arc extinguishing channel 10 can be lengthened under the influence of magnetic blowing and air blowing force, and the root of the arc is still positioned on the arc extinguishing structure 1, so that the arc can be further lengthened, the arc voltage is further improved, and a stronger arc extinguishing effect is realized.
As shown in fig. 1-2, the utility model further provides a direct current switch, which comprises a contact module 4, wherein the contact module 4 comprises a shell 40, and a moving contact 41, a fixed contact 42 and the arc extinguishing device which are respectively arranged in the shell 40, the arc extinguishing cavity is formed by the shell 40, one side of the arc extinguishing cavity, which is close to the moving contact 41 and the fixed contact 42, is provided with an air inlet, and the air outlet 2 is arranged on the shell 40 and is communicated with the arc extinguishing cavity.
According to the direct current switch, the arc generated on the moving contact 41 and the fixed contact 42 is extinguished by the arc extinguishing device, so that the breaking capacity of the contact module 4 can be improved.
Fig. 2 and 4 show only one end of a dc switch, in which two fixed contacts 42 are provided, one fixed contact 42 is disposed at the left end of the dc switch, in which the other fixed contact 42 is disposed at the right end of the dc switch, which is not shown, two ends of the moving contact 41 are respectively matched with the two fixed contacts 42, the two ends of the moving contact 41 are respectively provided with the arc extinguishing device, and when the moving contact 41 is respectively contacted with and separated from the two fixed contacts 42, the two fixed contacts 42 can be respectively connected and disconnected with the circuit connected with the two fixed contacts 42, and the generated arc is extinguished by the arc extinguishing device.
Further, an arc striking piece is arranged in the contact module 4, the arc striking piece comprises a first arc striking part 43, a second arc striking part 44 and a third arc striking part 45 which are sequentially connected, the first arc striking part 43 is matched with the fixed contact 42, the second arc striking part 44 is arranged in a lamination manner with the arc extinguishing grid piece 11, the third arc striking part 45 is arranged in a lamination manner with the insulating grid piece 31, and the length of the third arc striking part 45 is smaller than that of the insulating grid piece 31. By extending the arc striking plate, the third arc striking portion 45 is formed on the arc striking plate and laminated with the insulating grid plate 31, so that the effect of the insulating grid plate 31 can be improved, and the arc extinguishing capability of the arc extinguishing device can be further improved.
As shown in fig. 1, a filter screen 5 is disposed between the insulating structure 3 and the air outlet 2, and a filter hole 50 is disposed on the filter screen 5, where the filter screen 5 is perpendicular to the insulating grid 31, preferably, the filter screen is made of metal, and the filter screen 5 is used for filtering charged particles and cooling air.
As shown in fig. 2, the arc extinguishing structure 1 includes two first side plates 12 disposed opposite to each other, only one first side plate 12 is shown in the figure, a plurality of arc extinguishing gate sheets 11 are disposed between the two first side plates 12, and two sides of the plurality of arc extinguishing gate sheets 11 are respectively connected to the two first side plates 12.
As shown in fig. 2-3, the insulating structure 3 includes a second side plate 32, and the same sides of the plurality of insulating gate sheets 31 are respectively connected to the second side plate 32. Preferably, the plurality of insulating grid sheets 31 and the second side plate 32 are integrally formed. Further, the first side plate 12 is integrally formed with the insulating structure. In addition, the second side plate 32 may be integrally formed with the first side plate 12, which falls within the scope of the present utility model.
As shown in fig. 5, the thickness D1 of the arc-extinguishing gate 11 is equal to the thickness D2 of the corresponding insulating gate 31, so that the insulating gate 31 and the corresponding arc-extinguishing gate 11 can be aligned, and the insulating gate 31 and the arc-extinguishing gate 11 are arranged in one-to-one correspondence. Of course, the thickness D2 of the insulating gate sheets 31 may be smaller than or equal to or slightly larger than the thickness D1 of the arc extinguishing gate sheets 11, and the number of insulating gate sheets 31 may be smaller than or more than the number of arc extinguishing gate sheets 11, which falls within the protection scope of the present utility model.
Further, the length L1 of the arc extinguishing gate 11 is greater than the length L2 of the corresponding insulating gate 31, so that not only the respective actions of the arc extinguishing gate 11 and the insulating gate 31 can be balanced sufficiently, but also the reduction of the dimension in the length direction and the increase of the lengths of the contact module 4 and the dc switch can be avoided. The length L2 of the insulating gate sheet 31 is less than one half of the length L1 of the arc extinguishing gate sheet 11.
As shown in fig. 2-3, the insulating structure 3 is integrally formed with the housing 40, and the insulating grid 31 and the second side plate 32 of the insulating structure 3 of this embodiment are integrally formed with the housing 40, respectively. It is needless to say that the second side plate 32 may not be provided at this time, and the insulating grid 31 may be directly integrally formed with the housing 40. Preferably, the housing 40 is composed of an upper cover and a lower cover, and the insulating grid 31 is respectively disposed on the upper cover and the lower cover. The insulating barrier 31 is substantially uniform with the width of the arc chute (not shown). Of course, the insulating grid 31 may be independently disposed at the rear end of the arc extinguishing grid.
The arc extinguishing bars 11 are usually steel plates, are made of conductive metal materials, and the insulating bars 31 are made of plastic materials.
It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (10)
1. The utility model provides an arc extinguishing device, includes arc extinguishing cavity, sets up arc extinguishing structure (1) in the arc extinguishing cavity and with gas vent (2) of arc extinguishing cavity intercommunication, arc extinguishing structure (1) are including a plurality of arc extinguishing bars piece (11) of range upon range of setting, are equipped with arc extinguishing passageway (10), its characterized in that between every adjacent two arc extinguishing bars piece (11): an insulation structure (3) is arranged between the exhaust port (2) and the arc extinguishing structure (1), the insulation structure (3) comprises a plurality of insulation grid sheets (31) which are arranged in a stacked mode, an insulation channel (30) is arranged between every two adjacent insulation grid sheets (31), and two ends of the insulation channel (30) are respectively arranged opposite to the exhaust port (2) and the corresponding arc extinguishing channel (10).
2. The arc extinguishing device according to claim 1, wherein: a plurality of insulation channels (30) of the insulation structure (3) are arranged in one-to-one correspondence with a plurality of arc extinguishing channels (10) of the arc extinguishing structure (1).
3. The arc extinguishing device according to claim 1, wherein: be equipped with filter screen piece (5) between insulation system (3) and gas vent (2), be equipped with filtration pore (50) on filter screen piece (5), filter screen piece (5) with insulating grid piece (31) set up perpendicularly.
4. The arc extinguishing device according to claim 1, wherein: the arc extinguishing structure (1) comprises two first side plates (12) which are oppositely arranged, a plurality of arc extinguishing grid plates (11) are arranged between the two first side plates (12), and two sides of the arc extinguishing grid plates (11) are respectively connected with the two first side plates (12).
5. The arc extinguishing device according to claim 1, wherein: the insulating structure (3) comprises a second side plate (32), and the same sides of the plurality of insulating grid sheets (31) are respectively connected with the second side plate (32).
6. The arc extinguishing device according to claim 1, wherein: the thickness D1 of the arc-extinguishing grid plates (11) is equal to the thickness D2 of the corresponding insulating grid plates (31), and the insulating grid plates (31) and the arc-extinguishing grid plates (11) are arranged in a one-to-one correspondence.
7. The arc extinguishing device according to claim 1, wherein: the length L1 of the arc extinguishing grid plate (11) is larger than the length L2 of the corresponding insulating grid plate (31).
8. A direct current switch, characterized by: the contact module (4) comprises a shell (40), and a moving contact (41), a fixed contact (42) and the arc extinguishing device as claimed in any one of claims 1 to 7 which are respectively arranged in the shell (40), wherein an arc extinguishing cavity of the arc extinguishing device is formed by the shell (40), and the exhaust port (2) is arranged on the shell (40).
9. The direct current switch of claim 8, wherein: the contact module (4) is internally provided with an arc striking sheet, the arc striking sheet comprises a first arc striking part (43) and a second arc striking part (44) which are connected in sequence, the first arc striking part (43) is matched with a fixed contact (42), and the second arc striking part (44) is laminated with the arc extinguishing grid sheet (11).
10. The direct current switch of claim 8, wherein: the insulating structure (3) and the shell (40) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509407.1U CN220065488U (en) | 2023-03-14 | 2023-03-14 | Arc extinguishing device and direct current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509407.1U CN220065488U (en) | 2023-03-14 | 2023-03-14 | Arc extinguishing device and direct current switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220065488U true CN220065488U (en) | 2023-11-21 |
Family
ID=88756925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320509407.1U Active CN220065488U (en) | 2023-03-14 | 2023-03-14 | Arc extinguishing device and direct current switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220065488U (en) |
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2023
- 2023-03-14 CN CN202320509407.1U patent/CN220065488U/en active Active
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