CN207947210U - A kind of arc-extinguish chamber that can promote arc extinguishing efficiency - Google Patents
A kind of arc-extinguish chamber that can promote arc extinguishing efficiency Download PDFInfo
- Publication number
- CN207947210U CN207947210U CN201721419211.4U CN201721419211U CN207947210U CN 207947210 U CN207947210 U CN 207947210U CN 201721419211 U CN201721419211 U CN 201721419211U CN 207947210 U CN207947210 U CN 207947210U
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- Prior art keywords
- arc
- grid
- arc extinguishing
- static contact
- moving contact
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Abstract
The utility model provides a kind of arc-extinguish chamber that can promote arc extinguishing efficiency, including insulation crust, moving contact, static contact, tension spring, coil and arc extinguishing grid, insulation crust is rectangle frame shape, middle part is provided with the galvanic circle for moving contact and static contact, static contact is fixedly connected with the inner left wall of galvanic circle by fixed link, wound around coil on static contact, coil is towards the side of moving contact, it is provided with arc protection cover, arc protection cover is arch, moving contact is connected to by tension spring on the right side inner wall of galvanic circle, arc extinguishing grid is arranged in the joint of moving contact and static contact, arc extinguishing grid includes the upper grid group and Under The Grille group of setting symmetrical above and below, each grid group includes the grid sheet of four from left to right ladder-like arrangements of climbing.It can be the grid sheet composition of four from left to right ladder-like arrangements of climbing, vacuum arc can be separated layer by layer, promote the efficiency of arc extinguishing by the way that the arc extinguishing grid on the engagement stroke of moving contact and static contact is arranged.
Description
Technical field
The utility model belongs to arc-control device field, more particularly, to a kind of arc-extinguish chamber that can promote arc extinguishing efficiency.
Background technology
Inter-electrode arc generates in this way in vacuum：Before rows will detach, the contact pressure that originally applied on contact
Power starts to weaken, and the contact resistance between dynamic/static contact starts to increase, and due to the effect of load current, calorific value increases.In contact
Rigid moment to be separated only leans on several spikes in connection with load current is retracted to these points by intensive at this time between dynamic/static contact
On peak bridge, contact resistance increased dramatically, while current density increases severely again, and heating temperature is caused to improve rapidly, causes contact surface
Metal generates evaporation.High electric field strength can be also formed under contact distance small simultaneously, causes strong field emission,
Gap punctures, and then forms vacuum arc.Vacuum arc once being formed, just will appear current density 104A/cm2 or more the moon
Polar spot point makes the metal constantly fusing and evaporation of cathode surface regional area, to maintain vacuum arc.After arc extinction, electricity
It is spread rapidly with the metal vapors of surrounding them between pole, density rapid decrease restores high vacuum insulation shape between zero, contact
State.Vacuum interrupter is also vacuum switch tube or vacuum bubbles, is the core devices of vacuum switch.It is to be sealed in vacuum with a pair
In electrode（Contact）With other parts, by the excellent insulation of vacuum and blow-out performance, realize circuit close or disjunction,
Rapid blow-out and the vacuum device of electric current can be restrained after cutting off the power.But existing arc-extinguish chamber, there are the settings of arc extinguishing grid not
Rationally, typically isometric grid, arc extinguishing inefficient.
Utility model content
In view of this, the utility model is directed to a kind of arc-extinguish chamber that can promote arc extinguishing efficiency, setting can be passed through
Arc extinguishing grid on the engagement stroke of moving contact and static contact is the grid sheet group of four from left to right ladder-like arrangements of climbing
At can separate vacuum arc layer by layer, promote the efficiency of arc extinguishing.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of arc-extinguish chamber that can promote arc extinguishing efficiency, including insulation crust, moving contact, static contact, tension spring, coil
With arc extinguishing grid, the insulation crust is rectangle frame shape, and the middle part is provided with leading for the moving contact and the static contact
Electrical circuit, the static contact are fixedly connected with the inner left wall of the galvanic circle by fixed link, institute are wound on the static contact
Coil is stated, the coil is provided with arc protection cover towards the side of the moving contact, and the arc protection cover is arch, institute
It states moving contact to be connected on the right side inner wall of the galvanic circle by the tension spring, the moving contact and the static contact
Joint the arc extinguishing grid is set, the arc extinguishing grid includes the upper grid group and Under The Grille group of setting symmetrical above and below, often
A grid group includes the grid sheet of four from left to right ladder-like arrangements of climbing.
Further, the junction of the fixed link and the galvanic circle inner wall is provided with the first reinforcement briquetting.
Further, the junction of the tension spring and the galvanic circle inner wall, is provided with the second reinforcement block.
Further, the arc protection cover is ceramic material.
Compared with the existing technology, the arc-extinguish chamber described in the utility model that can promote arc extinguishing efficiency has the advantage that：
Insulation crust can form vaccum case, ensure that moving contact and static contact are in the environment of high vacuum, provide extinguishing
Arc extinguishing grid is provided at the engagement stroke of the vacuum condition of electric arc, moving contact and static contact, and arc extinguishing grid includes right up and down
It includes the grid sheet of four from left to right ladder-like arrangements of climbing to claim the upper grid group and Under The Grille group of setting, each grid group,
It is detached in moving contact and static contact, generates the moment of vacuum arc, grid sheet provides progressive cutting from left to right, accelerates
The contact of electric arc and solid insulation grid sheet quickly reduces arc temperature, divides elongating arc, quickly extinguishes electric arc to play
Effect, compared to the isometric grid sheet setting of tradition, the effect of the subdividing the arc of the utility model is more thorough, and segmentation effect is more
It is good.Arc protection cover can protect coil, prevent coil from receiving arc through, and bowed arc protection cover can protect completely
Firmly coil.First reinforcement block can reinforce the connection of static contact and insulation crust, the second reinforcement block can reinforce moving contact with absolutely
The connection of edge shell, elevating mechanism intensity.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is the structural schematic diagram described in the utility model embodiment.
Reference sign：
1- insulation crusts；2- moving contacts；3- static contacts；4- tension springs；5- coils；6- arc extinguishing grids；The galvanic circles 7-；
8- fixed links；9- arc protection covers；The upper grid groups of 10-；11- Under The Grille groups；12- grid sheets；The first reinforcement blocks of 13-；14- second
Reinforcement block.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more this feature.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the utility model provides a kind of arc-extinguish chamber that can promote arc extinguishing efficiency, including it is insulation crust 1, dynamic
Contact 2, static contact 3, tension spring 4, coil 5 and arc extinguishing grid 6, the insulation crust 1 are rectangle frame shape, the middle part setting
There are the galvanic circle 7 for the moving contact 2 and the static contact 3, the static contact 3 to be fixedly connected with described lead by fixed link 8
The inner left wall of electrical circuit 7, winds the coil 5 on the static contact 3, the coil 5 towards the side of the moving contact 2,
It is provided with arc protection cover 9, the arc protection cover 9 is arch, and the moving contact 2 is connected to institute by the tension spring 4
It states on the right side inner wall of galvanic circle 7, the arc extinguishing grid 6, institute is arranged in the moving contact 2 and the joint of the static contact 3
State upper grid group 10 and Under The Grille group 11 that arc extinguishing grid 6 includes setting symmetrical above and below, each grid group include four from a left side to
The grid sheet 12 of right ladder-like arrangement of climbing.
The junction of the fixed link 8 and 7 inner wall of the galvanic circle is provided with the first reinforcement briquetting 13.
The junction of the tension spring 4 and 7 inner wall of the galvanic circle is provided with the second reinforcement block 14.
The arc protection cover 9 is ceramic material.
This example：Insulation crust 1 forms vaccum case, ensures that moving contact 2 and static contact 3 are in the environment of high vacuum, carries
For extinguishing the vacuum condition of electric arc, arc extinguishing grid 6, and arc extinguishing grid 6 are provided at moving contact 2 and the engagement stroke of static contact 3
Upper grid group 10 including setting symmetrical above and below and Under The Grille group 11, each grid group include four and from left to right ladder-like climb
The grid sheet 12 of arrangement detaches in moving contact 2 and static contact 3, generates the moment of vacuum arc, grid sheet 12 provides from left to right
Progressive cutting accelerates the contact of electric arc and solid insulation grid sheet 12, quickly reduces arc temperature, and electricity is elongated in segmentation
Arc, to play the role of quickly extinguishing electric arc, the grid sheet setting isometric compared to tradition, the subdividing the arc of the utility model
Effect it is more thorough, segmentation effect is more preferable.Arc protection cover 9 can protect coil 5, prevent coil 5 from receiving arc through, arch
Arc protection cover 9, coil 5 can be protected completely.First reinforcement block 13 reinforces the connection of static contact 3 and insulation crust 1, the
Two reinforcement blocks 14 can reinforce the connection of moving contact 2 and insulation crust 1, elevating mechanism intensity.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of arc-extinguish chamber that can promote arc extinguishing efficiency, it is characterised in that：Including insulation crust, moving contact, static contact, tension
Spring, coil and arc extinguishing grid, the insulation crust are rectangle frame shape, are provided in the middle part of the insulation crust for described dynamic tactile
The galvanic circle of head and the static contact, the static contact are fixedly connected with the inner left wall of the galvanic circle by fixed link,
The coil is wound on the static contact, the coil is provided with arc protection cover, the electricity towards the side of the moving contact
Arc protective cover is arch, and the moving contact is connected to by the tension spring on the right side inner wall of the galvanic circle, described
The arc extinguishing grid is arranged in the joint of moving contact and the static contact, and the arc extinguishing grid includes the upper lattice of setting symmetrical above and below
Grid group and Under The Grille group, each grid group include the grid sheet of four from left to right ladder-like arrangements of climbing.
2. the arc-extinguish chamber according to claim 1 that arc extinguishing efficiency can be promoted, it is characterised in that：The fixed link with it is described
The junction of galvanic circle inner wall is provided with the first reinforcement briquetting.
3. the arc-extinguish chamber according to claim 1 that arc extinguishing efficiency can be promoted, it is characterised in that：The tension spring and institute
The junction for stating galvanic circle inner wall is provided with the second reinforcement block.
4. the arc-extinguish chamber according to claim 1 that arc extinguishing efficiency can be promoted, it is characterised in that：The arc protection cover is
Ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419211.4U CN207947210U (en) | 2017-10-31 | 2017-10-31 | A kind of arc-extinguish chamber that can promote arc extinguishing efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419211.4U CN207947210U (en) | 2017-10-31 | 2017-10-31 | A kind of arc-extinguish chamber that can promote arc extinguishing efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207947210U true CN207947210U (en) | 2018-10-09 |
Family
ID=63703399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721419211.4U Expired - Fee Related CN207947210U (en) | 2017-10-31 | 2017-10-31 | A kind of arc-extinguish chamber that can promote arc extinguishing efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207947210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436928A (en) * | 2021-06-25 | 2021-09-24 | 哈尔滨工业大学 | Vacuum direct current arc-extinguishing chamber with permanent magnet embedded in contact |
-
2017
- 2017-10-31 CN CN201721419211.4U patent/CN207947210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436928A (en) * | 2021-06-25 | 2021-09-24 | 哈尔滨工业大学 | Vacuum direct current arc-extinguishing chamber with permanent magnet embedded in contact |
| CN113436928B (en) * | 2021-06-25 | 2022-11-04 | 哈尔滨工业大学 | Vacuum direct-current arc extinguish chamber with permanent magnet embedded in contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181009 Termination date: 20201031 |