CN208922988U - Self-energy extinguishing chamber and its arc extinguishing structure - Google Patents
Self-energy extinguishing chamber and its arc extinguishing structure Download PDFInfo
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- CN208922988U CN208922988U CN201822109820.0U CN201822109820U CN208922988U CN 208922988 U CN208922988 U CN 208922988U CN 201822109820 U CN201822109820 U CN 201822109820U CN 208922988 U CN208922988 U CN 208922988U
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- contact
- valve body
- moving contact
- arc extinguishing
- arcing
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Abstract
The utility model discloses a kind of self-energy extinguishing chamber and its arc extinguishing structures, the arc extinguishing structure of self-energy extinguishing chamber includes: can be along the moving contact that its axial reciprocating moves, static contact, preceding arcing contact and the rear arcing contact being sequentially distributed along the axial direction of moving contact, the valve body that is coated at moving contact and can be moved along the axial reciprocating of moving contact；Wherein, when being in "on" position, valve body and rear arcing contact are in sealing contact, and moving contact and static contact are conductively connected；When being in gate-dividing state, valve body and moving contact separate with rear arcing contact and are respectively positioned on the rear side of rear arcing contact, have airflow channel between rear arcing contact and valve body；Moving contact is axially movably set in valve body along it, and the movement of valve body lags behind the movement of moving contact during the opening process.Expanding chamber builds pressure effect when the arc extinguishing structure of above-mentioned self-energy extinguishing chamber improves arcing, keeps expanding chamber gas stronger to the air-blowing effect of electric arc, plays facilitation to electric arc is extinguished, improves the success rate for extinguishing electric arc.
Description
Technical field
The utility model relates to electric switch arc extinguishing technical field, more specifically to a kind of self-energy extinguishing chamber and its
Arc extinguishing structure.
Background technique
It is mainly ignited electric arc using moving contact when separating brake acts currently, being opened surely in electric switch away from self-energy extinguishing chamber,
Electric arc is set to burn between the arcing contact of fracture two sides, so that heat expansion chamber gas, improves and expand indoor air pressure, utilize gas
Air-blowing when letting out scattered to the airflow channel of fracture two sides acts on current over-zero moment extinguishing electric arc, thus turn-off current.
Specifically, the front side of expanding chamber is equipped with preceding arcing contact, and the rear side of expanding chamber is equipped with rear arcing contact, when moving contact is along it
When the separating brake direction of motion is moved on rear side of rear arcing contact, occurs gap between moving contact and rear arcing contact, the airflow channel of rear side is beaten
Open, expand indoor gas let out it is scattered, the current over-zero moment extinguish electric arc.
But when gap occur between moving contact and rear arcing contact, indoor gas thermal stress during arcing is expanded
It can be let out too early from the gap scattered when increasing not to a certain extent, cause air-blowing effect insufficient, arc extinction when current over-zero
Difficulty causes the success rate for extinguishing electric arc lower.
In conclusion how to improve the success rate for extinguishing electric arc, it is a problem to be solved by those skilled in the art.
Utility model content
In view of this, promoting expanding chamber the purpose of the utility model is to provide a kind of arc extinguishing structure of self-energy extinguishing chamber and existing
Pressure effect is built during arcing, enhances arc-chutes arc blow-out ability, to improve the success rate for extinguishing electric arc.The utility model it is another
One purpose is to provide a kind of self-energy extinguishing chamber with above-mentioned arc extinguishing structure.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of arc extinguishing structure of self-energy extinguishing chamber, comprising: can be along the moving contact that its axial reciprocating moves, along the dynamic touching
The axial direction static contact, preceding arcing contact and the rear arcing contact that are sequentially distributed of head, are coated at the moving contact and can be along the dynamic touching
The mobile valve body of the axial reciprocating of head；
Wherein, when be in "on" position when, the valve body and it is described afterwards arcing contact it is in sealing contact, the moving contact with it is described
Static contact is conductively connected；
When being in gate-dividing state, the valve body and the moving contact are separated and are respectively positioned on described with the rear arcing contact
The rear side of arcing contact afterwards has airflow channel after described between arcing contact and the valve body；
The moving contact is axially movably set in the valve body along it, and the shifting of the valve body during the opening process
The dynamic movement for lagging behind the moving contact.
Preferably, during the opening process, when the indoor air pressure of expansion reaches preset pressure, the valve body starts to move.
Preferably, during the opening process, when the moving contact is when moving to preset displacement, the valve body starts to move.
Preferably, during the opening process, the movement speed of the valve body is greater than or equal to the maximum movement of the moving contact
Speed.
Preferably, the arc extinguishing structure of the self-energy extinguishing chamber further include: drive that the moving contact moves along its axis
One driving mechanism, and the second driving mechanism that the driving valve body is moved axially along the moving contact.
Preferably, it is cylindrical side that the valve body, which is used for the contact surface in sealing contact with the rear arcing contact,.
Preferably, it is frustum cone side that the valve body, which is used for the contact surface in sealing contact with the rear arcing contact,.
Preferably, the static contact is equipped with channel for gas to pass through far from one end of the preceding arcing contact, the channel
Discharge area is less than the discharge area of the airflow channel.
Preferably, the arc extinguishing structure of the self-energy extinguishing chamber further include: be set to the rear portion of the rear arcing contact and have
The protective cover of cushion performance；
When being in "on" position, the rear arcing contact is contacted by the protective cover with the valve seal.
The arc extinguishing structure of self-energy extinguishing chamber based on above-mentioned offer, the utility model additionally provide a kind of self-energy extinguishing chamber,
The self-energy extinguishing chamber includes arc extinguishing structure, which is the arc extinguishing structure of self-energy extinguishing chamber described in any of the above embodiments.
The working principle of the arc extinguishing structure of self-energy extinguishing chamber provided by the utility model: when "on" position, moving contact with it is quiet
Contact conductive connection composition current path and valve body and rear arcing contact closed gas flow channel in sealing contact；When gate-dividing state, touching is moved
Head is separated with static contact, which makes current path disconnection, and valve body is moved to the direction far from static contact opens airflow channel.Therefore,
By "on" position to gate-dividing state, need valve body and moving contact mobile to the direction far from static contact；By gate-dividing state to combined floodgate
State needs valve body and moving contact to close to the movement of the direction of static contact.
By above-mentioned working principle it is found that the arc extinguishing structure of above-mentioned self-energy extinguishing chamber is needed by "on" position to gate-dividing state
Valve body and moving contact are mobile to the direction far from static contact, since moving contact is axially movably set in valve body along it, and
The movement of valve body lags behind the movement of moving contact during the opening process, then during the opening process, moving contact first moves along its axis,
It is moved axially after valve body along moving contact, and since the valve body in "on" position and rear arcing contact are in sealing contact, then avoids expansion
Indoor gas is lost from rear arcing contact rear, provides the time to expand room pressure raising when arcing；When valve body moves back
After dynamic, unobstructed airflow channel is formd at once, and the air pressure in the region is substantially less than and expands room pressure, can make expanding chamber
With biggish flow velocity, arcing contact rear sprays and lets out scattered interior gas backward, thus there is stronger air-blowing between the electric arc arcing contact
Effect promotes the extinguishing of electric arc, improves the success rate for extinguishing electric arc.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is that the structure when arc extinguishing structure of self-energy extinguishing chamber provided by the embodiment of the utility model is in "on" position is shown
It is intended to；
Fig. 2 is that the structure when arc extinguishing structure of self-energy extinguishing chamber provided by the embodiment of the utility model is in gate-dividing state is shown
It is intended to；
Fig. 3 is in another knot when "on" position for the arc extinguishing structure of self-energy extinguishing chamber provided by the embodiment of the utility model
Structure schematic diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, the arc extinguishing structure of self-energy extinguishing chamber provided by the embodiment of the utility model, comprising: can be along it
The mobile moving contact 5 of axial reciprocating, the static contact 4 being sequentially distributed along the axial direction of moving contact 5, preceding arcing contact 3 and rear arcing contact 2,
It is coated at moving contact 5 and can be along the valve body 1 that the axial reciprocating of moving contact 5 moves；
It should be noted that preceding arcing contact 3 is located at the front side of rear arcing contact 2, rear arcing contact 2 along the axial direction of moving contact 5
In the rear side of preceding arcing contact 3.
In the arc extinguishing structure of above-mentioned self-energy extinguishing chamber, when being in "on" position, valve body 1 and rear arcing contact 2 are in sealing contact,
Moving contact 5 and static contact 4 are conductively connected；When being in gate-dividing state, valve body 1 and moving contact 5 are separated with rear arcing contact 2 and
Positioned at the rear side of rear arcing contact 2, there is airflow channel between rear arcing contact 2 and valve body 1；Moving contact 5 along it axially movably
It is set in valve body 1, and the movement of valve body 1 lags behind the movement of moving contact 5 during the opening process.
It is understood that during the opening process, valve body 1 and moving contact 5 are required to the axial movement along moving contact 5, i.e.,
And valve body 1 lags behind moving contact 5 along the axial movement of moving contact 5 and axial moving along it during the opening process.Due to 1 meeting of valve body
In hot environment, then valve body 1 is heat-resisting material；Since the needs of valve body 1 are in sealing contact with rear arcing contact 2, then valve body 1 is
Nonmetallic materials.
The working principle of the arc extinguishing structure of self-energy extinguishing chamber provided by the embodiment of the utility model: when "on" position, touching is moved
First 5 are conductively connected with static contact 4 and constitute current path and valve body 1 and rear arcing contact 2 closed gas flow channel in sealing contact；Separating brake shape
When state, moving contact 5 is separated with static contact 4, which makes current path disconnection, and valve body 1 is moved to the direction far from static contact 4 keeps air-flow logical
It opens in road.Therefore, by "on" position to gate-dividing state, need valve body 1 and moving contact 5 mobile to the direction far from static contact 4；By
Gate-dividing state needs valve body 1 and moving contact 5 to close to the movement of the direction of static contact 4 to "on" position.
By above-mentioned working principle it is found that the arc extinguishing structure of above-mentioned self-energy extinguishing chamber is needed by "on" position to gate-dividing state
Valve body 1 and moving contact 5 are mobile to the direction far from static contact 4, since moving contact 5 is axially movably set to valve body 1 along it
In, and the movement of valve body 1 lags behind the movement of moving contact 5 during the opening process, then during the opening process, moving contact 5 is first along it
It moves axially, is moved axially after valve body 1 along moving contact, and since the valve body 1 in "on" position and rear arcing contact 2 are in sealing contact,
The gas then avoided in expanding chamber 6 is lost from rear arcing contact rear, when air pressure raising provides in expanding chamber 6 when for arcing
Between；After valve body 1 moves backward, unobstructed airflow channel is formd at once, and the air pressure in the region is substantially less than expanding chamber 6
Interior air pressure, can make in expanding chamber 6 gas with biggish flow velocity backward 2 rear of arcing contact spray and let out it is scattered, thus between arcing contact
Electric arc have stronger air-blowing effect, promote the extinguishing of electric arc, improve extinguish electric arc success rate.
In order to farthest improve the probability for extinguishing electric arc, preferential selection is during the opening process when the gas in expanding chamber 6
When pressure reaches preset pressure, valve body 1 starts to move.For the specific value of preset pressure, set according to actual needs, this
Utility model embodiment does not limit this.
But the detection difficulty of the pressure in expanding chamber 6 is larger, for the ease of implementing, preferential selection during the opening process when
When moving to preset displacement of moving contact 5, valve body 1 start to move.For the specific value of preset displacement, carry out according to actual needs
Setting, the utility model embodiment do not limit this.
In actual application, preset displacement can be determined according to above-mentioned preset pressure by test methods such as emulation,
Consequently facilitating operating valve body 1 is mobile.
Pumping effect can be generated after valve body 1 is mobile during the opening process, the movement speed of valve body 1 is bigger, and pumping effect is got over
Greatly.Therefore, the preferential movement speed for selecting valve body 1 during the opening process is greater than or equal to the maximum movement speed of moving contact 5.
Mobile, the arc extinguishing structure of above-mentioned self-energy extinguishing chamber for the ease of valve body 1 and moving contact 5 further include: driving moving contact 5
The first driving mechanism moved along its axis, and the second driving mechanism that driving valve body 1 is moved axially along moving contact 5.
Above-mentioned first driving mechanism and the second driving mechanism are relatively independent, i.e. the mobile phase of the movement of valve body 1 and moving contact 5
To independence.It for the specific structure of the first driving mechanism and the second driving mechanism, is designed according to actual needs, this is practical new
Type embodiment does not limit this.
Certainly, it also may be selected using same driving mechanism driving valve body 1 and the movement of moving contact 5, specifically, the driving machine
The different components of structure drive moving contact 5 and valve body 1 mobile respectively.
Above-mentioned valve body 1 and rear arcing contact 2 are in sealing contact, to reach barrier high temperature arc extinguishing gases effect.For the ease of sealing
Contact, above-mentioned valve body 1 is used to rear arcing contact 2 contact surface in sealing contact be cylindrical side, alternatively, valve body 1 is used for and backarc
The contact surface that contact 2 connects is frustum cone side.
Certainly, valve body 1 also may be selected to be used to rear arcing contact 2 contact surface in sealing contact be other shapes, such as prism
Side etc., it is not limited to above-described embodiment.
In the arc extinguishing structure of above-mentioned self-energy extinguishing chamber, when being in "on" position, the fingertip of static contact 4 clamps moving contact 5,
To realize the conductive connection of static contact 4 Yu moving contact 5.
Further, above-mentioned static contact 4 is equipped with channel for gas to pass through far from one end of preceding arcing contact 3, and channel goes out
Open area is less than the discharge area of airflow channel.
Certainly, static contact 4 also may be selected and is not provided with channel for gas to pass through, the specific needs by practical structures design are true
It is fixed.
In order to further optimize the above technical scheme, as shown in figure 3, the arc extinguishing structure of above-mentioned self-energy extinguishing chamber further include:
It is set to the rear portion of rear arcing contact 2 and the protective cover 7 with cushion performance；When being in "on" position, rear arcing contact 2 passes through guarantor
Shield 7 and valve body 1 are in sealing contact.
Above-mentioned protective cover 7 plays the role of protection and buffering to rear arcing contact 2, to extend making for rear arcing contact 2
Use the service life.
It should be noted that above-mentioned protective cover 7 is made of nonmetallic heat-resisting material.The rear portion of arcing contact 2 afterwards, after referring to
Side of the arcing contact 2 far from preceding arcing contact 3.
The arc extinguishing structure of the self-energy extinguishing chamber provided based on the above embodiment, the utility model embodiment additionally provide one kind
Self-energy extinguishing chamber, the self-energy extinguishing chamber include arc extinguishing structure, which is self-energy extinguishing chamber described in above-described embodiment
Arc extinguishing structure.
Since the arc extinguishing structure of above-mentioned self-energy extinguishing chamber has above-mentioned technique effect, above-mentioned self-energy extinguishing chamber have it is above-mentioned from
The arc extinguishing structure of energy arc-chutes, then above-mentioned self-energy extinguishing chamber also has corresponding technical effect, and repeats no more herein.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of arc extinguishing structure of self-energy extinguishing chamber, comprising: can be along the moving contact (5) that its axial reciprocating moves, along described dynamic
Static contact (4), preceding arcing contact (3) and the rear arcing contact (2) that the axial direction of contact (5) is sequentially distributed；It is characterized by further comprising:
The valve body (1) for being coated at the moving contact (5) and can be mobile along the axial reciprocating of the moving contact (5)；
Wherein, when being in "on" position, the valve body (1) and the rear arcing contact (2) are in sealing contact, the moving contact (5)
It is conductively connected with the static contact (4)；
When being in gate-dividing state, the valve body (1) and the moving contact (5) are separated with the arcing contact (2) afterwards and equal position
The rear side of arcing contact (2) after described has airflow channel after described between arcing contact (2) and the valve body (1)；
The moving contact (5) is axially movably set in the valve body (1) along it, and the valve body during the opening process
(1) movement lags behind the movement of the moving contact (5).
2. arc extinguishing structure according to claim 1, which is characterized in that during the opening process, the air pressure in expanding chamber (6)
When reaching preset pressure, the valve body (1) starts to move.
3. arc extinguishing structure according to claim 1, which is characterized in that during the opening process, when the moving contact (5) moves to
When preset displacement, the valve body (1) starts to move.
4. arc extinguishing structure according to claim 1, which is characterized in that during the opening process, the mobile speed of the valve body (1)
Degree is greater than or equal to the maximum movement speed of the moving contact (5).
5. arc extinguishing structure according to claim 1, which is characterized in that further include: drive the moving contact (5) along its axial direction
The first mobile driving mechanism, and the second driving mechanism that the driving valve body (1) moves axially along the moving contact (5).
6. arc extinguishing structure according to claim 1, which is characterized in that the valve body (1) is used for and the rear arcing contact (2)
Contact surface in sealing contact is cylindrical side.
7. arc extinguishing structure according to claim 1, which is characterized in that the valve body (1) is used for and the rear arcing contact (2)
Contact surface in sealing contact is frustum cone side.
8. arc extinguishing structure according to claim 1, which is characterized in that the static contact (4) is far from the preceding arcing contact (3)
One end be equipped with channel for gas to pass through, the discharge area in the channel is less than the discharge area of the airflow channel.
9. arc extinguishing structure according to claim 1 to 8, which is characterized in that further include: it is set to the backarc
The rear portion of contact (2) and the protective cover (7) with cushion performance；
When being in "on" position, the rear arcing contact (2) is in sealing contact by the protective cover (7) and the valve body (1).
10. a kind of self-energy extinguishing chamber, including arc extinguishing structure, which is characterized in that the arc extinguishing structure is as appointed in claim 1-9
Arc extinguishing structure described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109820.0U CN208922988U (en) | 2018-12-14 | 2018-12-14 | Self-energy extinguishing chamber and its arc extinguishing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109820.0U CN208922988U (en) | 2018-12-14 | 2018-12-14 | Self-energy extinguishing chamber and its arc extinguishing structure |
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| Publication Number | Publication Date |
|---|---|
| CN208922988U true CN208922988U (en) | 2019-05-31 |
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ID=66712770
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822109820.0U Active CN208922988U (en) | 2018-12-14 | 2018-12-14 | Self-energy extinguishing chamber and its arc extinguishing structure |
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| CN (1) | CN208922988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002605A (en) * | 2020-08-25 | 2020-11-27 | 西安西电开关电气有限公司 | Switch device and arc extinguish chamber thereof |
| CN112331517A (en) * | 2020-11-19 | 2021-02-05 | 西安西电开关电气有限公司 | Gas arc-extinguishing chamber |
-
2018
- 2018-12-14 CN CN201822109820.0U patent/CN208922988U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002605A (en) * | 2020-08-25 | 2020-11-27 | 西安西电开关电气有限公司 | Switch device and arc extinguish chamber thereof |
| CN112002605B (en) * | 2020-08-25 | 2022-08-12 | 西安西电开关电气有限公司 | Switch device and arc extinguish chamber thereof |
| CN112331517A (en) * | 2020-11-19 | 2021-02-05 | 西安西电开关电气有限公司 | Gas arc-extinguishing chamber |
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