CN106653411B - A method of preventing high-voltage switch contact poor contact - Google Patents
A method of preventing high-voltage switch contact poor contact Download PDFInfo
- Publication number
- CN106653411B CN106653411B CN201611122227.9A CN201611122227A CN106653411B CN 106653411 B CN106653411 B CN 106653411B CN 201611122227 A CN201611122227 A CN 201611122227A CN 106653411 B CN106653411 B CN 106653411B
- Authority
- CN
- China
- Prior art keywords
- protection band
- spring
- band
- fixing card
- protection
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention relates to a kind of method preventing high-voltage switch contact poor contact, its steps is：I with the protection band of an auspicious stainless steel for having a self-locking device；II measures width, the lateral perimeter of switch spring, and protection band is equal with the width of spring, and the length of protection band is more than the length of spring；III protection band is wrapped in spring outwards, and spring band at least uniformly makes a call to three mounting holes in the periphery of switch contact, in protection band；With riveting gun by a fixing card riveting in protection band；The fixing card is placed between two fingertips of switch and strip is blocked into spring；Protection band is locked with cord holder；Protection band is fastened on spring outwards with fixing card, strip is stuck in the both sides of protection band and spring, rivet is injected the through-hole of fixing card and the mounting hole of protection band, riveting gun tightens together rivet with fixing card and protection band with double.Originally the method for preventing high-voltage switch contact poor contact can avoid electric system high-voltage switch gear and discharge caused by contact is bad.
Description
Technical field
The present invention relates to a kind of methods preventing high-voltage switch contact poor contact.
Background technology
In recent years, applicant's generation more than ten played short trouble caused by 10KV switchgear Mume flower contact scaling loss：Seven decompressions
It stands, six let-down stations, frequency is more, well damage, and without the effect precautionary measures, this kind of accident is in the same frequency of electric system industry
Numerous generation.Existing prevention method one kind taken is to shorten the time between overhauls(TBO), and one kind is using infrared thermometry；But for the former
The live running equipment of speech can not frequent interruption maintenance, so be not suitable for most of equipment, and switching on/off handcart is pushed into after overhaul
Contact condition afterwards, which appoints so detect, causes possible hidden danger that can not eliminate；And the latter is since the position of switch contact is in cabin
Interior, infrared thermometry can not be detected effectively.In the accident case of the decompression 10KV switchgears of applicant 2015 seven, ten minutes it
Preceding infrared thermometry is still normal value, and the accident of the serious scaling loss of switch contact just occurs later.Therefore visible infrared ray thermometric is used
It cannot be satisfied in the detection of the poor contact of switch contact.Switchgear is the most key equipment of electric system, fortune
Capable safety is most important to stablizing for system, and is first class of protection thereon caused by the scaling loss short trouble of switch contact
Action, that is, directly result in large area dead electricity, and its scaling loss degree is serious, and recovery time is long, and seriously affecting influences electric system fortune
Row safety belongs to major hidden danger, and without the effect precautionary measures, becomes the difficult problems for perplexing power industry in recent years.Switchgear touches
Head only compresses fingertip with two coil springs, and there are the possibility of fingertip poor contact, and contact resistance is caused to overheat, and spring pressure becomes
It is small, cause spring to follow the string, contact resistance becomes larger, and fingertip fusing causes phase fault to cause failure.
Invention content
In order to overcome the existing method for preventing high-voltage switch contact poor contact insufficient, the present invention provides a kind of
It avoids electric system high-voltage switch gear from discharging caused by contact is bad, arcing, switch is caused to explode, busbar is short
The method for preventing high-voltage switch contact poor contact of road serious accident.
The major hidden danger of Operation of Electric Systems safety is directly affected for this, the present invention uses stainless silicon steel material
Peripheral protection band；Protection band is wrapped in spring outwards, is corresponded to uniform perforating at spring gapping interval in protection band, is installed fixing card
Son；It is locked after being accurately positioned size.
Originally the method for preventing high-voltage switch contact poor contact include the steps that it is following successively：
I uses the protection band of the periphery of stainless steel, usually 304 stainless steels.Magnetism-free stainless steel, which has, goes magnetism
Can, and do not deform, be denaturalized because of fever, performance is stablized, and disclosure satisfy that the use environment in switchgear.
There is self-locking device, self-locking device to have ball tongue, one end of ball tongue to have stopper gear master for one end of protection band
Steel ball, steel ball are mounted between ball tongue and stainless steel band, have steel band tail to be inserted into seam between the two, and steel band tail is inserted into seam and is more than
The thickness of stainless steel band is less than diameter of the steel ball.The other end of protection band is after being inserted into the steel band tail insertion seam of self-locking device, outward
One draws, and steel ball blocks stainless steel band, just stainless steel band self-locking.
II measures width, the lateral perimeter of switch spring, and protection band is equal with the width of spring, and error is ± 2mm；Protection
The length of band is more than the length of spring；It wraps in the outside of spring convenient for protection band.
III protection band is wrapped in spring outwards, and spring band corresponds to switch contact sky in the periphery of switch contact, in protection band
Gap interval at least uniformly makes a call to three mounting holes；
A riveting guns are by a fixing card riveting in protection band；
B is positioned, and between which is placed on two fingertips of switch, and the strip of fixing card is blocked spring；
C is locked to protection band using cord holder；
Protection band is fastened on spring outwards by d using fixing card, and the strips of fixing card both sides is stuck in protection band and spring
Both sides, the mounting hole of double through-holes and protection band for riveting gun injecting rivet remaining fixing card, with it is double riveting gun rivet
It tightens together with fixing card and protection band.
Using the protection band with self-locking device, it is locked to protection band using cord holder.
Switch contact is divided into A, B, C three-phase, is upper and lower two groups per being mutually divided into, each contact adds two protection bands, up and down
Totally six contacts, i.e., every face switchgear need to add the protection that 12 protection bands implement contacts and spring fastening to two groups of three-phases.
Beneficial effects of the present invention
When short trouble occurs for switch cabinet contact scaling loss, itself switch can not act, need to be by upper level protection act, Shen
The switch contact short trouble for the seven decompression 10KV branches asked someone causes incoming relay-protection action tripping, one section of busbar dead electricity it is serious
The switch contact scaling loss short trouble of consequence, six decompression 10KV branches leads to one or two switch trips of main transformer, and large area is caused to lose
The huge fluctuation of electricity and system, influences the production of applicant.Originally the method for preventing high-voltage switch contact poor contact increases
Protection band, it can be ensured that contact is good, avoids the generation of similar accident.
Description of the drawings
Fig. 1 is the outline drawing for the steel disc for making fixing card.
Fig. 2 is the front view of fixing card.
Fig. 3 is the sectional view of A-A lines along Fig. 2.
Fig. 4 is the expansion front view of protection band.
Fig. 5 is the partial sectional view of B-B lines along Fig. 4.
Fig. 6 is the schematic diagram that protection band is rolled in spring.
In above-mentioned figure
1. fixing card, 2. strips, 3. through-holes, 4. protection bands, 5. self-locking devices, 6. ball tongues, 7. stainless steel bands,
8. mounting hole, 9. steel balls, 10. steel band tails are inserted into seam, 11. switch contacts, 12. springs, 13. rivets.
Specific implementation mode
The specific implementation mode of the present invention is further illustrated with reference to embodiment and its attached drawing.For following implementation
The explanation of example helps to understand the present invention, but is not limitation of the present invention.
Embodiment
Originally prevent the embodiment of the method for high-voltage switch contact poor contact include the steps that it is following successively：
I uses the protection band 4 of the periphery of stainless steel, and the present embodiment is 304 stainless steels.Magnetism-free stainless steel, which has, to be gone
Magnetic property, and do not deform, be denaturalized because of fever, performance is stablized, and disclosure satisfy that the use environment in switchgear.
One end of protection band 4 has self-locking device 5, sees that Fig. 4 and Fig. 5, self-locking device 5 have ball tongue 6, ball tongue 6
One end there is stopper to keep off main steel ball 9, steel ball 9 is mounted between ball tongue 6 and stainless steel band 7, has steel band tail to insert between the two
Enter seam 10, steel band tail is inserted into seam 10 and is more than the thickness of stainless steel band 7 less than 9 diameter of steel ball.The other end of protection band 4 is inserted from
After the steel band tail of locking device 5 is inserted into seam 10, outside one draws, and steel ball 9 blocks stainless steel band 7, just 7 self-locking of stainless steel band.
II width for measuring switch spring is 12mm, lateral perimeter 370mm（Rated current 2500 is pacified）, protection band 4 with
The width of spring 12 is equal, and error is ± 2mm.The length of protection band 4 is more than the length of spring 12, is 600mm, compares spring peripheral
Long 230mm,；It wraps in the outside of spring 12 convenient for protection band 4.
For ease of operation, the length of protection band 4 is more than the 50% of 12 length of spring.Protection band（4）Corresponding switch contact（11）
At gapping interval.
III is fixed with clamp, is corresponded in protection band 4 and is uniformly beaten mounting hole 8 at 11 gapping interval of switch contact, uses rivet
Rifle installs fixing card 1.Protection band 4 is wrapped in 12 outside of spring, and spring 12 binds round in the periphery of switch contact 11, sees Fig. 6, protecting
Band 4 corresponds to and uniformly beats mounting hole 8 at 11 gapping interval of switch contact, and the present embodiment is four fixing cards 1, totally four mounting holes 8,
2.5 mm of diameter Ф；
The first, with riveting gun by a fixing card 1（Also serve as first fixing card）Riveting is in protection band 4.
The second, it positions, between which is placed on two fingertips of switch, and strip 2 is blocked into spring 12.
Third is locked to protection band 4 using cord holder.
4th, protection band 4 is fastened on 12 outside of spring, the strip 2 of 1 both sides of fixing card using other three fixing cards 1
It is stuck in the both sides of protection band 4 and spring 12, double 4 mounting holes of through-hole 3 and protection band for riveting gun injecting rivet 13 fixing card 1
8, riveting gun tightens together rivet 13 with other three fixing cards 1 and protection band 4 with double.
The present embodiment is with four rivets 13 and four fixing cards 1.
The shape of fixing card 1 is shown in Fig. 1, Fig. 2 and Fig. 3.The square of the overlook direction of the fixing card 1 of the present embodiment, also may be used
With with rectangle.In 1 both sides of fixing card, respectively there are one strips 2, and strip 2 is vertical with mainboard 1.1., has through-hole 3 in mainboard 1.1.
Using the protection band 4 with self-locking device 6, positioning（Between any two fingertip）After size, cord holder pair is used
Protection band 4 is locked.
Switch contact is divided into A, B, C three-phase, is upper and lower two groups per being mutually divided into, each contact adds two protection bands 4, up and down
Totally six contacts, i.e., every face switchgear need to add the protection that 12 protection bands 4 implement contacts and spring fastening to two groups of three-phases.
Claims (3)
1. a kind of method preventing high-voltage switch contact poor contact, it include the steps that it is following successively：
I uses the protection band of the periphery of stainless steel（4）, protection band（4）One end have self-locking device（5）, self-locking device（5）
There is ball tongue（6）, ball tongue（6）One end there is stopper to block steel ball（9）, steel ball（9）Mounted on ball tongue（6）With
Stainless steel band（7）Between, there is steel band tail to be inserted into seam between the two（10）, steel band tail, which is inserted into, to be stitched（10）More than stainless steel band（7）'s
Thickness is less than steel ball（9）Diameter；
II measures switch spring（12）Width, lateral perimeter, protection band（4）With spring（12）Width it is equal, error be ±
2mm；Protection band（4）Length be more than spring（12）Length；
III protection band（4）It wraps in spring（12）Outside, spring（12）Hoop is in switch contact（11）Periphery, in protection band（4）
Corresponding switch contact（11）Three mounting holes are at least uniformly made a call at gapping interval（8）；
IV with riveting gun by a fixing card（1）Riveting is in protection band（4）On；
V positioning, by the fixing card（1）It is placed between two fingertips of switch, and by the strip of fixing card（2）Block spring（12）；
VI uses cord holder to protection band（4）It is locked；
VII utilizes fixing card（1）By protection band（4）It is fastened on spring（12）Outside, fixing card（1）The strip of both sides（2）It is stuck in guarantor
Protecting band（4）And spring（12）Both sides, it is double riveting gun rivet（13）Inject remaining fixing card（1）Through-hole（3）And protection
Band（4）Mounting hole（8）, with it is double riveting gun rivet（13）With fixing card（1）And protection band（4）It tightens together.
2. the method according to claim 1 for preventing high-voltage switch contact poor contact, it is characterized in that：
The protection band（4）Material be 304 stainless steels.
3. according to any method for preventing high-voltage switch contact poor contact of claims 1 or 2, it is characterized in that：
Switch contact is divided into A, B, C three-phase, is upper and lower two groups per being mutually divided into, each contact（11）Add two protection bands（4）, on
Totally six contacts, every face switchgear need to add 12 protection bands to lower two groups of three-phases（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122227.9A CN106653411B (en) | 2016-12-08 | 2016-12-08 | A method of preventing high-voltage switch contact poor contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122227.9A CN106653411B (en) | 2016-12-08 | 2016-12-08 | A method of preventing high-voltage switch contact poor contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106653411A CN106653411A (en) | 2017-05-10 |
| CN106653411B true CN106653411B (en) | 2018-08-17 |
Family
ID=58819766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611122227.9A Active CN106653411B (en) | 2016-12-08 | 2016-12-08 | A method of preventing high-voltage switch contact poor contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106653411B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2054107U (en) * | 1989-04-21 | 1990-03-07 | 向军 | Monodirectional auto-locking positioning device |
| CN201780885U (en) * | 2009-12-02 | 2011-03-30 | 慈溪市和昌电器有限公司 | Bundled contact short-circuit preventive safety sheath |
| CN103198962A (en) * | 2013-04-01 | 2013-07-10 | 甘肃省电力公司检修公司 | Moving contact of 330kV isolating switch of converting station |
| CN203950770U (en) * | 2013-12-02 | 2014-11-19 | 国家电网公司 | Insulating enclosed type fuse fastening assembly |
| CN203950776U (en) * | 2013-12-02 | 2014-11-19 | 国家电网公司 | J type hook hole insulating enclosed type fuse fastening assembly |
-
2016
- 2016-12-08 CN CN201611122227.9A patent/CN106653411B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2054107U (en) * | 1989-04-21 | 1990-03-07 | 向军 | Monodirectional auto-locking positioning device |
| CN201780885U (en) * | 2009-12-02 | 2011-03-30 | 慈溪市和昌电器有限公司 | Bundled contact short-circuit preventive safety sheath |
| CN103198962A (en) * | 2013-04-01 | 2013-07-10 | 甘肃省电力公司检修公司 | Moving contact of 330kV isolating switch of converting station |
| CN203950770U (en) * | 2013-12-02 | 2014-11-19 | 国家电网公司 | Insulating enclosed type fuse fastening assembly |
| CN203950776U (en) * | 2013-12-02 | 2014-11-19 | 国家电网公司 | J type hook hole insulating enclosed type fuse fastening assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106653411A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2012390982B2 (en) | No-freewheeling arc lightning protection gap protecting device | |
| CN102129033B (en) | Test loop used for direct-current switch test | |
| US10381824B2 (en) | Circuit breaker with arc eliminator and power receiving/distributing equipment using same | |
| CN106992450B (en) | For the mistaken collision preventing isolating tool and partition method of voltage circuit secondary terminals | |
| CN106653411B (en) | A method of preventing high-voltage switch contact poor contact | |
| US10526826B2 (en) | Interlock device of ring main unit | |
| CN104008828B (en) | A kind of discharging gap apparatus | |
| CN105427970A (en) | Lightning protection device | |
| CN104124677A (en) | Neutral-point grounding resistance cabinet | |
| CN102486956B (en) | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow | |
| CN205452789U (en) | Lightning protection device | |
| EP3257122B1 (en) | A portable switching device to remotely operate a high voltage circuit breaker | |
| CN106356238A (en) | Isolation switch for isolating arc extinguishing cabinet | |
| CN203871732U (en) | Special-purpose ground wire for built-in switch cabinet | |
| CN109411168B (en) | Method for enabling low-voltage lightning arrester to have automatic separation function | |
| CN206194974U (en) | Penetrating cable clamp | |
| CN203119291U (en) | Water type arc extinguishing clearance protection device for middle/low voltage distribution network | |
| CN210779509U (en) | Low-voltage side switch insulation baffle plate of box-type substation | |
| CN104753031A (en) | Neutral point complete-set protection device | |
| CN218768919U (en) | Closing resistor and closing resistor string for preventing breaker closing resistor from being damaged | |
| CN2935576Y (en) | Lightning stroke protector for earth-free power source | |
| CN105186310B (en) | The mechanical interlocks of outdoor compact type intelligent substation high-tension switch cabinet | |
| KR20180108273A (en) | Gas Insulated Circuit Breaker | |
| CN213242018U (en) | Anti-creeping high-reliability cable | |
| CN209167465U (en) | The pilot system of GIS lag coefficient under VFTO and Lightning Over-voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |