CN105762009A - Vacuum arc-extinguishing chamber and manufacture method therefor - Google Patents
Vacuum arc-extinguishing chamber and manufacture method therefor Download PDFInfo
- Publication number
- CN105762009A CN105762009A CN201610223877.6A CN201610223877A CN105762009A CN 105762009 A CN105762009 A CN 105762009A CN 201610223877 A CN201610223877 A CN 201610223877A CN 105762009 A CN105762009 A CN 105762009A
- Authority
- CN
- China
- Prior art keywords
- vacuum interrupter
- manufacture method
- graphene layer
- graphene
- vacuum arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
Abstract
The invention discloses a vacuum explosion chamber and a manufacture method therefor. A graphene layer is covered on a surface of an electric conduction loop circuit of the vacuum arc-extinguishing chamber. According to the vacuum arc-extinguishing chamber, the graphene layer is covered on surfaces of all parts of the electric conduction loop circuit; good heat conductivity, electric conductivity and heat dissipating performance of the graphene layer is used to lower electric resistance of the electric conduction loop circuit; heat produced by the electric conduction loop circuit is transmitted outward, the heat conductivity and the heat dissipating performance of the electric conduction loop circuit are improved, a temperature rise can be effectively lowered when a large rated current flows through the vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber is suitable for all current grades, and the temperature rise can be reduced by 3-10 DEG C.
Description
Technical field
The invention belongs to vacuum interrupter field, be specifically related to a kind of vacuum interrupter with good ascending effect of lowering the temperature and manufacture method thereof.
Background technology
Vacuum interrupter is the core component of vacuum switch, and it mainly includes insulation crust, galvanic circle and shielding harness, and wherein, galvanic circle is made up of dynamic and static electrode, and dynamic and static electrode is made up of corresponding conducting rod and the contact being fixedly installed on conducting rod.The inside of vacuum interrupter is a vacuum cavity, can produce heat when galvanic circle is by electric current.When rated current is bigger, the temperature rise of vacuum interrupter is just relatively larger, and conference is crossed in temperature rise affects the fatigue strength of the parts such as corrugated tube, reduces the service life of vacuum interrupter.
Domestic existing many researcheres reduce temperature rise by the structural design of vacuum interrupter, as CN2413373Y discloses a kind of low-voltage vacuum arc-extinguishing chamber, it is by making integral mechanism by static conductive rod and fixed contact pedestal, overcome the contact resistance that static conductive rod and fixed contact pedestal produce in junction, improve capacity of heat transmission；CN203812799U discloses a kind of vacuum interrupter and electrode thereof and structure of contact terminal, it adopts the outer composite contact cup structure of composition that is nested inside and outside interior horizontal magnetic contact cup and outer vertical magnetic contact cup, make the electric current when dynamic and static contact is connected can pass through inside and outside two contact cups to tap simultaneously, add the cross-sectional area of current path, reduce vacuum interrupter galvanic circle resistance and temperature rise.
In prior art, it is possible to from aspect reduction temperature rises such as vacuum interrupter galvanic circle material, structural designs, but its restricted application, reduce the limited efficiency of temperature rise and be difficult to continue.
Summary of the invention
It is an object of the invention to provide a kind of vacuum interrupter, thus solving in prior art, the vacuum interrupter temperature rise bigger for rated current is relatively big, and existing technique reduces the problem that temperature rise is not enough.
Second purpose of the present invention is to provide the manufacture method of above-mentioned vacuum interrupter.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of vacuum interrupter, the surface, galvanic circle of vacuum interrupter is covered and is had graphene layer.
Described galvanic circle includes static conductive rod and the moving conductive rod of electrical connection.
The thickness of graphene layer is 1 μm～500 μm.Control graphene layer within the scope of this, not affecting on the basis of other performances of vacuum interrupter, can effectively reduce temperature rise.
Vacuum interrupter provided by the invention, each parts surface in galvanic circle covers graphene layer, utilize heat conductivity, electric conductivity and thermal diffusivity that graphene layer is good, reduce galvanic circle resistance, the heat that galvanic circle produces outwards is transmitted, improve heat conductivity and the thermal diffusivity of galvanic circle, temperature rise when effectively reducing big rated current by vacuum interrupter.
A kind of manufacture method of above-mentioned vacuum interrupter, including: each parts surface in galvanic circle prepares graphene layer, is assembled into vacuum interrupter,.Preferably, static conductive rod, moving conductive rod surface can prepare graphene layer, be assembled into vacuum interrupter.
The method that can adopt spraying, brushing or dip-coating prepares graphene layer.When adopting spraying coating process, in vacuum interrupter galvanic circle, each parts surface sprays a layer graphene, dries or dries at 50 DEG C～300 DEG C.When adopting brush coating process, in vacuum interrupter galvanic circle, each parts surface brushes a layer graphene, dries or dries at 50 DEG C～300 DEG C.When adopting dipping process, each for vacuum interrupter galvanic circle parts are immersed in Graphene slurry, take out, dry or dry at 50 DEG C～300 DEG C.
Graphene slurry used by spraying, brushing or dip-coating can adopt commercial goods.Preferably, the mass percent of Graphene slurry consists of: solvent 70%～95%, Graphene 4.5%～27%, dispersant 0.5%～3%.Be uniformly dispersed to obtain Graphene slurry by each component under high-speed dispersion equipment.
Described solvent is water, ethanol or acetone, and dispersant is dimethylformamide (DMF) or N-Methyl pyrrolidone (NMP).
The thickness of prepared graphene layer is 1～500 μm.
The each component materials in galvanic circle that this manufacture method is suitable for can be copper or aluminum.
The manufacture method of vacuum interrupter provided by the invention, by preparing graphene layer at each parts surface in the galvanic circle of vacuum interrupter, effectively reduce the temperature rise of big specified current vacuum arc-chutes, the method is applicable to the vacuum interrupter of all current classes, and the actual temperature rise value that reduces reaches 3～10 DEG C；This manufacturing approach craft is simple, applied widely, reduces temperature rise effect significantly lasting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the galvanic circle part of vacuum interrupter of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
The vacuum interrupter of the present embodiment, mainly include insulation crust, galvanic circle and shielding harness, assembly relation between them is same as the prior art, wherein, the structural representation of galvanic circle part is as shown in Figure 1, including dynamic and static electrode, moving electrode is made up of moving conductive rod 1 and the contact unit being fixedly installed on moving conductive rod, electrostatic agent is made up of static conductive rod 2 and the contact unit being fixedly installed on static conductive rod, the surface of moving conductive rod 1 and static conductive rod 2 is covered graphene layer 3, and the thickness of graphene layer is 1 μm.
The manufacture method of the vacuum interrupter of the present embodiment, including: adopt spraying method, on the surface of static conductive rod, moving conductive rod, spray a layer graphene, after room temperature is dried, be assembled into vacuum interrupter；The mass percent of spraying Graphene slurry used consists of: water 95%, Graphene 4.5%, DMF0.5%.
Embodiment 2
The vacuum interrupter of the present embodiment, structure is identical with embodiment 1, and the thickness differing only in graphene layer is 50 μm.
The manufacture method of the vacuum interrupter of the present embodiment, including: adopt brushing mode, on the surface of static conductive rod, moving conductive rod, brush a layer graphene, after room temperature is dried, be assembled into vacuum interrupter；The mass percent brushing Graphene slurry used consists of: ethanol 88.5%, Graphene 10%, DMF1.5%.
Embodiment 3
The vacuum interrupter of the present embodiment, structure is identical with embodiment 1, and the thickness differing only in graphene layer is 100 μm.
The manufacture method of the vacuum interrupter of the present embodiment, including: adopt dip coating manner, static conductive rod, moving conductive rod are immersed in Graphene slurry, after drying in 50 DEG C, is assembled into vacuum interrupter；Used by dip-coating, the mass percent of Graphene slurry consists of: water 80%, Graphene 18%, NMP2%.
Embodiment 4
The vacuum interrupter of the present embodiment, structure is identical with embodiment 1, and the thickness differing only in graphene layer is 200 μm.
The manufacture method of the vacuum interrupter of the present embodiment, including: adopt spraying method, at surface spraying one layer graphene of static conductive rod, moving conductive rod, after drying in 300 DEG C, be assembled into vacuum interrupter；The mass percent of spraying Graphene slurry used consists of: acetone 70%, Graphene 27%, DMF3%.
Embodiment 5
The vacuum interrupter of the present embodiment, structure is identical with embodiment 1, and the thickness differing only in graphene layer is 300 μm.
The manufacture method of the vacuum interrupter of the present embodiment is identical with embodiment 4.
Embodiment 6
The vacuum interrupter of the present embodiment, structure is identical with embodiment 1, and the thickness differing only in graphene layer is 500 μm.
The manufacture method of the vacuum interrupter of the present embodiment is identical with embodiment 4.
Test example
This test example carries out temperature rise test to the vacuum interrupter of embodiment 1～6, detection method carries out according to the regulation of " GB/T11022-2011 common specifications for high-voltage switchgear and controlgear standards ", detection electric current is 2000A, the vacuum extinction cell structure of comparative example is substantially the same manner as Example 1, being distinctive in that surface, galvanic circle is without graphene layer, testing result is as shown in table 1.
The temperature rise test testing result of table 1 vacuum interrupter
| Sequence number | Vacuum interrupter temperature rise, DEG C | Temperature rise decreasing value, DEG C |
| Comparative example | 42 | 0 |
| Embodiment 1 | 39 | 3 |
| Embodiment 2 | 37 | 5 |
| Embodiment 3 | 35 | 7 |
| Embodiment 4 | 34 | 8 |
| Embodiment 5 | 33 | 9 |
| Embodiment 6 | 32 | 10 |
By the result of the test of table 1, the vacuum interrupter of the present invention effect can reduce temperature rise 3～10 DEG C under 2000A electric current, thus ensureing vacuum interrupter stable performance, extends the service life of vacuum interrupter.
Claims (7)
1. a vacuum interrupter, it is characterised in that the surface, galvanic circle of vacuum interrupter is covered and had graphene layer.
2. vacuum interrupter as claimed in claim 1, it is characterised in that described galvanic circle includes static conductive rod and the moving conductive rod of electrical connection.
3. vacuum interrupter as claimed in claim 1 or 2, it is characterised in that the thickness of graphene layer is 1 μm～500 μm.
4. the manufacture method of a vacuum interrupter as claimed in claim 1, it is characterised in that each parts surface in galvanic circle prepares graphene layer, is assembled into vacuum interrupter,.
5. the manufacture method of vacuum interrupter as claimed in claim 4, it is characterised in that adopt the method for spraying, brushing or dip-coating to prepare graphene layer.
6. the manufacture method of vacuum interrupter as claimed in claim 5, it is characterised in that the mass percent of the Graphene slurry used by spraying, brushing or dip-coating consists of: solvent 70%～95%, Graphene 4.5%～27%, dispersant 0.5%～3%.
7. the manufacture method of vacuum interrupter as claimed in claim 6, it is characterised in that solvent is water, ethanol or acetone, and dispersant is dimethylformamide or N-Methyl pyrrolidone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223877.6A CN105762009A (en) | 2016-04-08 | 2016-04-08 | Vacuum arc-extinguishing chamber and manufacture method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223877.6A CN105762009A (en) | 2016-04-08 | 2016-04-08 | Vacuum arc-extinguishing chamber and manufacture method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105762009A true CN105762009A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610223877.6A Pending CN105762009A (en) | 2016-04-08 | 2016-04-08 | Vacuum arc-extinguishing chamber and manufacture method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644745A (en) * | 2017-11-05 | 2018-01-30 | 西安晶海中德铁路电气有限公司 | A kind of shunting conductive protection device of break stacked switch |
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| CN204966382U (en) * | 2015-10-14 | 2016-01-13 | 湖北大禹汉光真空电器有限公司 | Vacuum arc extinguishing chamber |
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2016
- 2016-04-08 CN CN201610223877.6A patent/CN105762009A/en active Pending
Patent Citations (11)
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| DE102012211475A1 (en) * | 2012-07-03 | 2014-01-09 | Siemens Aktiengesellschaft | Vacuum switching tube, has contact system for switching and/or disrupting current guided over tube and comprising fixed and movable contacts, and conductor element for electrical connection with contacts and arranged in hollow body |
| CN103725046A (en) * | 2012-10-12 | 2014-04-16 | 东丽先端材料研究开发（中国）有限公司 | Graphene dispersion liquid and preparation method thereof |
| CN203562277U (en) * | 2013-10-11 | 2014-04-23 | 广东明路电力电子有限公司 | Reactor with graphene coatings |
| CN104163928A (en) * | 2014-08-25 | 2014-11-26 | 鸿纳（东莞）新材料科技有限公司 | Conductive heat-conductive graphene slurry and coating |
| CN204289233U (en) * | 2014-10-15 | 2015-04-22 | 中国西电电气股份有限公司 | High-pressure vacuum breaker |
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| CN107644745A (en) * | 2017-11-05 | 2018-01-30 | 西安晶海中德铁路电气有限公司 | A kind of shunting conductive protection device of break stacked switch |
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Application publication date: 20160713 |