CN204117927U - A kind of structure-improved of high voltage isolator - Google Patents
A kind of structure-improved of high voltage isolator Download PDFInfo
- Publication number
- CN204117927U CN204117927U CN201420411737.8U CN201420411737U CN204117927U CN 204117927 U CN204117927 U CN 204117927U CN 201420411737 U CN201420411737 U CN 201420411737U CN 204117927 U CN204117927 U CN 204117927U
- Authority
- CN
- China
- Prior art keywords
- contact
- fixed contact
- shell
- high voltage
- moving contact
- 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.)
- Expired - Fee Related
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 101700078171 KNTC1 Proteins 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The utility model discloses a kind of structure-improved of high voltage isolator, comprise the fixed contact of " U " shape and the moving contact of movable cooperation with it, fixed contact is located in shell, and moving contact can be stretched and is placed in shell and plugs at fixed contact, is provided with memory alloy spring at fixed contact between shell; After adopting said structure, its be in close state time, electric current flow through switch produce high temperature, will deformation be there is in memorial alloy, make the contact between disconnecting link tightr, increase conductive area, reduce contact resistance, reduce temperature, reduce heating, this Stability Analysis of Structures, reduces friction when moving contact and fixed contact of isolating switch is separated, improves isolating switch performance and life-span.
Description
Technical field
The present invention relates to field of electrical equipment, especially relate to a kind of high voltage isolator.
Background technology
In power switchgear field, the effect of isolating switch is indispensable.Its principles and structure is fairly simple, but due to use amount large, functional reliability requires high, and the impact run electric power safety is all larger.The main feature of disconnecting link is without arc extinguishing ability, can only divide, closing circuit when not having load current.But in deciliter process, easily there is deformation and corrosion in disconnecting link, along with service time increases, deformation and corrosion will affect the electric conductivity between disconnecting link, and fixed contact distortion during disconnecting link heating in addition, reduces with moving contact contact-making surface, its resistance increases, also can affect the electric conductivity between disconnecting link, cause isolating switch joint overheated, cause the generation of power grid accident.
Utility model content
The purpose of this utility model is, for the impact of disconnecting link deformation on electric conductivity, to propose a kind of structure-improved of high voltage isolator.
For reaching above-mentioned purpose, the structure-improved of a kind of high voltage isolator of the utility model, comprise the fixed contact of " U " shape and the moving contact of movable cooperation with it, fixed contact is located in shell, moving contact can be stretched and is placed in shell and plugs at fixed contact, it is characterized in that: between shell, be provided with memory alloy spring at fixed contact.
Described memory alloy spring is two, is erected at respectively between shell and two contact chips of fixed contact.
Described moving contact and the contact-making surface of fixed contact are provided with silver coating.
Described moving contact is circular arc spheroid, and the contact-making surface of fixed contact is the arc surface suitable with moving contact.
Adopt after said structure, its be in close state time, electric current flows through switch and produces high temperature, and memorial alloy deformation will occur, and makes the contact between disconnecting link more tight, increases conductive area, reduce contact resistance, reduce temperature, reduce heating.This Stability Analysis of Structures, reduces friction when moving contact and fixed contact of isolating switch is separated, improves isolating switch performance and life-span.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the utility model disconnecting link structural representation.
Label declaration:
1, lead movable contact rod, 2, shell, 3, fixed contact, 4, memory alloy spring, 5 moving contacts.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1 and Fig. 2, the utility model forms primarily of leading movable contact rod 1, shell 2, fixed contact 3, memory alloy spring 4 and moving contact 5.Fixed contact 3 and moving contact 5 are connected on leads in movable contact rod 1, and the movable contact rod 1 of leading connecing moving contact 5 can turn from along rotating shaft thus is docked with fixed contact 3 or departs from from fixed contact 3.For increasing the contact area of moving contact 5 and fixed contact 3, it is spherical that moving contact 5 is set to circular arc, and two contact-making surfaces of fixed contact 3 are set to corresponding arc surface.On moving contact 5 with the contact-making surface of fixed contact 3, silver-plated (not shown) is to reduce resistance.Fixed contact 3 is located in shell 2, is provided with alloy memory spring 4 between fixed contact 3 and shell 2, and this alloy memory spring 4 can only establish one, and for making better effects if, alloy memory spring 4 is located between two contacts of fixed contact 3 and shell 2 respectively.When isolating switch be in close state time, electric current flows through fixed contact 3 and produces high temperature, and memory alloy spring 4 deformation will occur, inwardly extruding fixed contact 3, and make the contact between fixed contact 3 and moving contact 5 more tight, contact area becomes large, resistance decreasing; When separating brake, fixed contact 3 temperature reduces, memory alloy spring 4 is returned to original length, two contacts of fixed contact 3 are not squeezed, moving contact 5 is easier to spin off from fixed contact 3, decrease wearing and tearing, avoid the impact of disconnecting link 3 deformation caused because of repeatedly folding, which thereby enhance isolating switch security performance.For reducing resistance silver-plated (not shown) on moving contact 5 with the contact-making surface of fixed contact 3, such contact can not affect conductivity because of corrosion, and after adopting structure of the present utility model, silver coating can not be worn very soon.
The utility model adds memory alloy spring between fixed contact and shell, isolating switch joint can be made automatically to reduce connection resistance when joint is overheated, ensure good conductivity, prevents the overheated accident caused from occurring.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent shapes or Structural Transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. the structure-improved of a high voltage isolator, comprise the fixed contact of " U " shape and the moving contact of movable cooperation with it, fixed contact is located in shell, and moving contact can be stretched and is placed in shell and plugs at fixed contact, it is characterized in that: between shell, be provided with memory alloy spring at fixed contact.
2. the structure-improved of a kind of high voltage isolator as claimed in claim 1, is characterized in that: described memory alloy spring is two, is erected at respectively between shell and two contact chips of fixed contact.
3. the structure-improved of a kind of high voltage isolator as claimed in claim 1, is characterized in that: described moving contact and the contact-making surface of fixed contact are provided with silver coating.
4. the structure-improved of a kind of high voltage isolator as claimed in claim 1, is characterized in that: described moving contact is circular arc spheroid, and the contact-making surface of fixed contact is the arc surface suitable with moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411737.8U CN204117927U (en) | 2014-07-24 | 2014-07-24 | A kind of structure-improved of high voltage isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420411737.8U CN204117927U (en) | 2014-07-24 | 2014-07-24 | A kind of structure-improved of high voltage isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117927U true CN204117927U (en) | 2015-01-21 |
Family
ID=52335215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420411737.8U Expired - Fee Related CN204117927U (en) | 2014-07-24 | 2014-07-24 | A kind of structure-improved of high voltage isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117927U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766753A (en) * | 2015-04-29 | 2015-07-08 | 苏州西脉记忆合金有限公司 | Disconnecting switch contact |
| CN105225879A (en) * | 2015-04-29 | 2016-01-06 | 苏州西脉记忆合金有限公司 | A kind of isolating switch intelligence contact |
| CN106252144A (en) * | 2016-09-20 | 2016-12-21 | 安徽机电职业技术学院 | The dynamic/static contact draw bail of electric cleaner high voltage ground switch |
| CN112038158A (en) * | 2020-07-16 | 2020-12-04 | 湖南长高高压开关集团股份公司 | Method for processing abnormal temperature rise of isolating switch and isolating switch |
-
2014
- 2014-07-24 CN CN201420411737.8U patent/CN204117927U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766753A (en) * | 2015-04-29 | 2015-07-08 | 苏州西脉记忆合金有限公司 | Disconnecting switch contact |
| CN105225879A (en) * | 2015-04-29 | 2016-01-06 | 苏州西脉记忆合金有限公司 | A kind of isolating switch intelligence contact |
| CN105225879B (en) * | 2015-04-29 | 2017-08-15 | 苏州国嘉记忆合金有限公司 | A kind of intelligent contact of disconnecting switch |
| CN106252144A (en) * | 2016-09-20 | 2016-12-21 | 安徽机电职业技术学院 | The dynamic/static contact draw bail of electric cleaner high voltage ground switch |
| CN112038158A (en) * | 2020-07-16 | 2020-12-04 | 湖南长高高压开关集团股份公司 | Method for processing abnormal temperature rise of isolating switch and isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20190724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |