CN202473625U - Isolating switch contact device capable of reducing contact resistance - Google Patents
Isolating switch contact device capable of reducing contact resistance Download PDFInfo
- Publication number
- CN202473625U CN202473625U CN2012200966352U CN201220096635U CN202473625U CN 202473625 U CN202473625 U CN 202473625U CN 2012200966352 U CN2012200966352 U CN 2012200966352U CN 201220096635 U CN201220096635 U CN 201220096635U CN 202473625 U CN202473625 U CN 202473625U
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- China
- Prior art keywords
- graphite block
- contact
- groove
- fixed contact
- isolating switch
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- Expired - Fee Related
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Abstract
The utility model relates to the field of power supply equipment, in particular to an isolating switch. An isolating switch contact device capable of reducing contact resistance comprises a static contact and a movable contact and further comprises a graphite block, wherein a recess is formed on the upper side of the static contact; the graphite block is positioned in the recess; and the graphite block is detachably connected with the bottom of the recess. The length of the graphite block is equal to that of the bottom of the recess; and the width of the graphite block is equal to that of the bottom of the recess. As the technical scheme is adopted, the isolating switch contact device capable of reducing the contact resistance, provided by the utility model, has the advantages of simple structure as well as convenience and rapidness for mounting; a gap between the static contact and the movable contact can be effectively reduced, the contact area between the static contact and the movable contact can be increased and the resistance at the connecting part of the static contact and the movable contact can be reduced, so that an effect of reducing the heating temperature of the static contact is achieved, excessive damage of the static contact is avoided and the service life of the static contact is prolonged.
Description
Technical field
The utility model relates to the power supply unit field, is specifically related to a kind of isolating switch.
Background technology
The fast development of electric utility makes a large amount of electric equipments drop in the electrical network, and the load of electrical network is high for a long time.Wherein SSBII (AM)-525 type isolating switch is a kind of common electrical network electrical equipment; At present the isolating switch of this model is often used in some mechanisms of alternating current-direct current transformer station, but because the sharp increase of urban power consumption now, and the current capacity of whole alternating current-direct current transformer station is high for a long time; Directly caused the isolating switch of this model to be in the full load condition for a long time; In case the slit between fixed contact and the moving contact is excessive, both contacts area are too small, can directly increase the resistance of moving contact and fixed contact junction; To such an extent as to serious phenomenon such as regular appearance heating of fixed contact and wearing and tearing; This makes when reduce sharply the useful life of this model isolator, along with the continuous increase of isolating switch maintenance number of times, except the economic benefit of mechanism of alternating current-direct current transformer station is brought the massive losses; Also badly influence the whole security and stability of electric power system, people's personal safety is existed great potential safety hazard.
The utility model content
The purpose of the utility model is to provide a kind of switch touching head unit that reduces contact resistance value, solves above technical problem.
The technical problem that the utility model solved can adopt following technical scheme to realize:
A kind of switch touching head unit that reduces contact resistance value comprises a fixed contact, a moving contact, and said fixed contact upside is provided with a groove; It is characterized in that; Also comprise a graphite block, said graphite block is positioned at said groove, and said graphite block and said groove bottom land removably connect;
The length of said graphite block equals the length of said bottom portion of groove, and the width of said graphite block equals the width of said bottom portion of groove.
After said graphite block in the utility model is pressed in the groove of said fixed contact; Can reduce the slit between said moving contact and the said fixed contact; Strengthen the contact-making surface between said fixed contact and the said moving contact; Thereby reduced the contact resistance of said fixed contact, reached the purpose that reduces electric energy ground loss, extenuated fixed contact heating and loss.
Said graphite block is provided with two screws, and said groove bottom land is provided with two screws, and the screwhole diameter of said graphite block equals the screwhole diameter of said groove bottom land, and said graphite block removably connects through two bolts and said groove bottom land.
Said graphite block is provided with a depression, and said bottom portion of groove is provided with a convexity, and when said graphite block was connected with said fixed contact, said convexity buckled in the said depression, prevents that effectively said graphite block from moving in the groove of said fixed contact.
Beneficial effect: owing to adopt technique scheme, the utility model is simple in structure, and it is convenient to install; Can effectively reduce the slit between fixed contact and the moving contact; Increase contact area between the two, reduce junction resistance, thereby reach the effect that reduces the fixed contact heating temp; Avoid many degree damages of fixed contact, prolong its useful life.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the end view of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, Fig. 2, a kind of switch touching head unit that reduces contact resistance value comprises a fixed contact 2, a moving contact 1; Also comprise a graphite block 3; Fixed contact 2 upsides are provided with a groove, and graphite block 3 is positioned at groove, and graphite block 3 removably connects with the groove bottom land; The length of graphite block 3 equals the length of bottom portion of groove, and the width of graphite block 3 equals the width of bottom portion of groove.The utility model is after graphite block 3 is pressed in the groove of fixed contact 2; Can reduce the slit between moving contact 1 and the fixed contact 2; Strengthen the contact-making surface between fixed contact 2 and the moving contact 1; Thereby reduced the contact resistance of fixed contact 2, reached the purpose that reduces electric energy ground loss, extenuated fixed contact 2 heatings and loss.
Graphite is the mineral of heatproof, and excellent conductivity, quality are soft partially, when the width of graphite block 3 equals the width of bottom portion of groove; Can graphite block be clamp-oned in the groove, make to fit tightly between graphite block 3 and the bottom portion of groove, and make the bottom of fixed contact 2 slightly outwards strutted by the graphite block extruding; The top of fixed contact 2 comes closer; Can effectively increase the transverse pressure of 2 pairs of moving contacts 1 of fixed contact, make between fixed contact 2 and the moving contact 1 be connected more firm, difficult drop-off.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (3)
1. the switch touching head unit that can reduce contact resistance value comprises a fixed contact, a moving contact, it is characterized in that; Also comprise a graphite block; Said fixed contact upside is provided with a groove, and said graphite block is positioned at said groove, and said graphite block and said groove bottom land removably connect;
The length of said graphite block equals the length of said bottom portion of groove, and the width of said graphite block equals the width of said bottom portion of groove.
2. a kind of switch touching head unit that reduces contact resistance value according to claim 1; It is characterized in that: said graphite block is provided with two screws; Said groove bottom land is provided with two screws; The screwhole diameter of said graphite block equals the screwhole diameter of said groove bottom land, and said graphite block removably connects through two bolts and said groove bottom land.
3. a kind of switch touching head unit that reduces contact resistance value according to claim 2, it is characterized in that: said graphite block is provided with a depression, and said bottom portion of groove is provided with a convexity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200966352U CN202473625U (en) | 2012-03-15 | 2012-03-15 | Isolating switch contact device capable of reducing contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200966352U CN202473625U (en) | 2012-03-15 | 2012-03-15 | Isolating switch contact device capable of reducing contact resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473625U true CN202473625U (en) | 2012-10-03 |
Family
ID=46921768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200966352U Expired - Fee Related CN202473625U (en) | 2012-03-15 | 2012-03-15 | Isolating switch contact device capable of reducing contact resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701037A (en) * | 2013-12-04 | 2015-06-10 | 山东联合化工股份有限公司 | Highly reliable conducting plugging contact |
-
2012
- 2012-03-15 CN CN2012200966352U patent/CN202473625U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701037A (en) * | 2013-12-04 | 2015-06-10 | 山东联合化工股份有限公司 | Highly reliable conducting plugging contact |
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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: 20121003 Termination date: 20200315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |