CN102368445B - Three-working-position isolation switch - Google Patents
Three-working-position isolation switch Download PDFInfo
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- CN102368445B CN102368445B CN 201110355187 CN201110355187A CN102368445B CN 102368445 B CN102368445 B CN 102368445B CN 201110355187 CN201110355187 CN 201110355187 CN 201110355187 A CN201110355187 A CN 201110355187A CN 102368445 B CN102368445 B CN 102368445B
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Abstract
The invention provides a three-working-position isolation switch. An isolation switch static contact and a grounding switch static contact are provided at two ends in a three-phase together box body. A moving contact is positioned at a middle position between the isolation switch static contact and the grounding switch static contact. An operation mechanism controls the moving contact to move between the isolation switch static contact and the grounding switch static contact and controls two ends of the moving contact to contact the isolation switch static contact or the grounding switch static contact individually respectively. The isolation switch static contact is provided with an arc ignition structure inside. According to the invention, functions of the isolation switch and the grounding switch are combined as one body, operation and electric interlocking are simplified, a volume is greatly reduced, the arc ignition structure can prevent arc burning from damaging electric appliance, and the three-working-position isolation switch has the advantages of simple structure, compactness, a small volume, safety, reliability, good stability, low cost and a long service life.
Description
Technical field
The invention belongs to a kind of tri-station isolating switch.
Background technology
Traditional isolating switch, earthed switch structure are divided and are arranged, the machinery between isolating switch and earthed switch and electrical interlocks complex structure, and in the H-GIS combined electrical apparatus, shared volume is large.Excessive isolating switch and the volume of earthed switch, not only be unfavorable for installation and the use of H-GIS combined electrical apparatus, also makes the poor stability of H-GIS combined electrical apparatus, and volume is large, affects its normal use.On the other hand, for guaranteeing the good contact of high power switch two contacts, usually in fixed contact, establish the watchband-shaped contactor of several ring-types, but the electric arc that two contacts of high power switch produce while separating often burns watchband-shaped contactor, causes the switch infringement to scrap.
Summary of the invention
The objective of the invention is to design a kind of tri-station isolating switch, the function of isolating switch and earthed switch can be integrated, simplify the operation and electrical interlocks, reduced volume significantly, but the arc-striking structure arc protection burns infringement electrical equipment, also has simple in structure, compact volume is little, safe and reliable, good stability, cost hangs down the advantage with long service life.
For this reason, the present invention mainly is comprised of static contact isolation switch and static contact of grounding switch.In the three-phase combined type housing, the limit, two ends is respectively static contact isolation switch and static contact of grounding switch, moving contact is positioned at the centre position of static contact isolation switch and static contact of grounding switch, operating mechanism is controlled moving contact and is moved and control the moving contact two ends contact static contact isolation switch or static contact of grounding switch separately respectively between static contact isolation switch and static contact of grounding switch, is provided with arc-striking structure in static contact isolation switch.Described operating mechanism is positioned at support bar and lower conductor upper end, by guide groove, gear and tooth bar, formed, the moving contact cunning fits in guide groove, guide groove is fixed on support bar and lower conductor upper end, the moving contact lower end is provided with the tooth bar with the gear toe joint, gear shaft is located in guide groove, and gear is by the rack drives moving contact.Described gear middle part is provided with the dwang that driven gear rotates, and dwang is driven by manual insulating bar, or drives by controlling machinery.Described moving contact is provided with copper-tungsten section with a corresponding end of static contact isolation switch, and the moving contact lower end is provided with the tooth bar with the gear toe joint, and the moving contact middle part is provided with the jack road for the head insertion of Self-help contact terminal with the Self-help contact terminal corresponding end.The Self-help contact terminal that described arc-striking structure is middle part in static contact isolation switch.The head of described Self-help contact terminal is provided with copper-tungsten section, and the head of Self-help contact terminal is spheroidal.Described Self-help contact terminal top end face flushes with the outer face of the static contact isolation switch at place.Described arc-striking structure is comprised of arc striking component, spring, stopper slot, guide ring and banking pin, the arc striking component cunning fits in static contact isolation switch, arc striking component is open circles barrel shape body, be provided with spring between diapire in the openend of arc striking component and static contact isolation switch, vertically be provided with stopper slot on the lateral wall of arc striking component, be provided with an end in stopper slot and be fixed on the banking pin on the static contact isolation switch inwall, the openend that banking pin is controlled arc striking component holds parallel with the outer face of static contact isolation switch with the other end of arc striking component with diapire in static contact isolation switch.Described guide ring is positioned at the front and back ends of the watchband-shaped contactor on the static contact isolation switch inwall.The said structure design has realized purpose of the present invention.
The present invention can be integrated the function of isolating switch and earthed switch, simplify the operation and electrical interlocks, reduced volume significantly, the present invention can make the volume-diminished of H-GIS combined electrical apparatus nearly 65%, and arc-striking structure can effectively prevent that electric arc from burning infringement electrical equipment, also has simple in structure, compact volume is little, safe and reliable, good stability, cost hangs down the advantage with long service life.
The accompanying drawing explanation
Fig. 1 is moving contact of the present invention and static contact isolation switch structural representation while joining.
Fig. 2 is moving contact disengaged position structural representation of the present invention.
Fig. 3 is moving contact of the present invention and static contact of grounding switch structural representation while joining.
Fig. 4 is moving contact structure schematic diagram of the present invention.
Fig. 5 is the present invention with the static contact isolation switch of the Self-help contact terminal moving contact structure schematic diagram that joins.
The local structure for amplifying schematic diagram that Fig. 6 is Fig. 5.
Fig. 7 is Self-help contact terminal structural representation of the present invention.
Fig. 8 is another example structure schematic diagram of arc-striking structure of the present invention.
The separation process structural representation that Fig. 9 is Fig. 8 state.
Structural representation after the separation that Figure 10 is Fig. 8 state.
Embodiment
As shown in Figures 1 to 10, a kind of tri-station isolating switch, mainly be comprised of static contact isolation switch 8 and static contact of grounding switch 7.Be respectively static contact isolation switch and static contact of grounding switch on limit, the interior two ends of three-phase combined type housing 2.Moving contact 3 is positioned at the centre position of static contact isolation switch and static contact of grounding switch.Operating mechanism is controlled moving contact and is moved and control the moving contact two ends contact separately respectively static contact isolation switch or static contact of grounding switch between static contact isolation switch and static contact of grounding switch.Be provided with arc-striking structure in static contact isolation switch.
As shown in Figure 1 to Figure 3, described operating mechanism is positioned at support bar 11 and lower conductor 4 upper ends, guide groove 9, gear 6 and tooth bar 10, consists of.The moving contact cunning fits in guide groove, and guide groove is fixed on support bar and lower conductor upper end.The moving contact lower end is provided with the tooth bar with the gear toe joint, and gear shaft is located in guide groove, and gear is by the rack drives moving contact.Support bar and lower conductor upper end are structure as a whole, and support bar and lower conductor lower end are fixed on the three-phase combined type housing of bottom, and the three-phase combined type housing is that insulating material is made.Described gear middle part is provided with the dwang 5 that driven gear rotates, and dwang is driven by manual insulating bar, or drives by controlling machinery.Controlling machinery can be the motor that controlled by remote control.The upper end of upper conductor 1 upper end and its support bar is fixed on the three-phase combined type housing on top, and its support bar and upper conductor lower end are structure as a whole and fixing static contact isolation switch.
Figure 1 shows that the normal operating conditions of the present invention when moving contact and static contact isolation switch join, is the switch closing position.Moving contact and static contact of grounding switch disconnect, and moving contact and static contact isolation switch are connected.Electric current flows to lower conductor by upper conductor by static contact isolation switch.Now moving contact, by gear drive, can move to centre position.Position shown in Fig. 2 is the moving contact centre position, and moving contact and static contact isolation switch disconnect, and moving contact and static contact of grounding switch also disconnect simultaneously.Now moving contact can move to any any end to static contact isolation switch or static contact of grounding switch.The position of moving contact shown in Fig. 3 is maintenance of the present invention position, is the disconnected gate position of switch.Moving contact and static contact isolation switch disconnect, and moving contact and static contact of grounding switch are connected, and effectively protect maintainer's safety.Now moving contact can move to centre position.
As shown in Figure 4, described moving contact is provided with copper-tungsten section 14 with a corresponding end of static contact isolation switch, the moving contact lower end is provided with the tooth bar with the gear toe joint, and the moving contact middle part is provided with the jack road 13 for the head insertion of Self-help contact terminal with the Self-help contact terminal corresponding end.
Obviously, when moving contact separates with static contact isolation switch, it is lonely that two separation units can produce electricity, and the electric arc of generation often burns watchband-shaped contactor, causes the switch infringement to scrap.Arc-striking structure of the present invention can effectively overcome above-mentioned defect.
As shown in Figures 5 to 7, the Self-help contact terminal 12 that described arc-striking structure is middle part in static contact isolation switch.The head of described Self-help contact terminal is provided with copper-tungsten section, and the head of Self-help contact terminal is spheroidal.Described Self-help contact terminal top end face flushes with the outer face of the static contact isolation switch at place, and the bottom face of Self-help contact terminal is fixed on diapire middle part in static contact isolation switch.
During separation, moving contact first separates with the watchband-shaped contactor in the static contact isolation switch port, Self-help contact terminal finally separates with moving contact, and the electric arc produced like this will, in the burning of the copper-tungsten position of Self-help contact terminal and moving contact, can be avoided the lonely ablation watchband-shaped contactor of electricity and the moving contact that produce.
Described arc-striking structure can be also: as shown in Fig. 8 to Figure 10, described arc-striking structure is comprised of arc striking component 16, spring 17, stopper slot 18, guide ring 21,22 and banking pin 19.The arc striking component cunning fits in static contact isolation switch, and arc striking component is open circles barrel shape body, in the openend of arc striking component and static contact isolation switch, between diapire, is provided with spring.Vertically be provided with stopper slot on the lateral wall of arc striking component, be provided with an end in stopper slot and be fixed on the banking pin on the static contact isolation switch inwall.The openend that banking pin is controlled arc striking component holds parallel with the outer face of static contact isolation switch with the other end of arc striking component with diapire in static contact isolation switch.Described guide ring is positioned at the front and back ends of the watchband-shaped contactor 15 on the static contact isolation switch inwall.Guide ring can lead and doublely prevent that arc striking component from injuring watchband-shaped contactor and static contact isolation switch inwall in moving process.
Fig. 8 is the local enlarged diagram of Fig. 1, is moving contact and the static contact isolation switch normal operating conditions of the present invention while joining, and is the switch closing position.Now spring is compressed, and arc striking component compresses with the moving contact end face under spring action.Fig. 9 is in the separating brake motion of moving contact and static contact isolation switch, when moving contact and watchband-shaped contactor disengaging, arc striking component just enters with watchband-shaped contactor the state contacted, and electric current now flows to arc striking component again to moving contact from static contact isolation switch by watchband-shaped contactor, has realized the transfer of electric current.Figure 10 shows proceeding along with the separating brake motion of moving contact and static contact isolation switch; while flushing with the outer face of static contact isolation switch to the arc striking component end face; in stopper slot under the effect of banking pin; the arc striking component stop motion; and moving contact continuation separating brake motion (to the moving contact centre position) separates with arc striking component, produce electric arc, electric arc draws in arc striking component and moving contact end; electric arc can not contact watchband-shaped contactor, and watchband-shaped contactor has been played to protective effect.
In a word, the of the present invention function of isolating switch and earthed switch can being integrated, simplify the operation and electrical interlocks, reduced volume significantly, but the arc-striking structure arc protection burns infringement electrical equipment, also has simple in structure, compact volume is little, safe and reliable, good stability, cost hangs down the advantage with long service life.
Claims (5)
1. a tri-station isolating switch, mainly by static contact isolation switch and static contact of grounding switch, formed, it is characterized in that: in the three-phase combined type housing, the limit, two ends is respectively static contact isolation switch and static contact of grounding switch, moving contact is positioned at the centre position of static contact isolation switch and static contact of grounding switch, operating mechanism is controlled moving contact and is moved and control the moving contact two ends contact static contact isolation switch or static contact of grounding switch separately respectively between static contact isolation switch and static contact of grounding switch, is provided with arc-striking structure in static contact isolation switch;
Described operating mechanism is positioned at support bar and lower conductor upper end, by guide groove, gear and tooth bar, formed, the moving contact cunning fits in guide groove, guide groove is fixed on support bar and lower conductor upper end, the moving contact lower end is provided with the tooth bar with the gear toe joint, gear shaft is located in guide groove, and gear is by the rack drives moving contact;
The Self-help contact terminal that described arc-striking structure is middle part in static contact isolation switch, described moving contact is provided with copper-tungsten section with a corresponding end of static contact isolation switch, the moving contact lower end is provided with the tooth bar with the gear toe joint, and the moving contact middle part is provided with the jack road for the head insertion of Self-help contact terminal with the Self-help contact terminal corresponding end;
Or described arc-striking structure is comprised of arc striking component, spring, stopper slot, guide ring and banking pin, the arc striking component cunning fits in static contact isolation switch, arc striking component is open circles barrel shape body, be provided with spring between diapire in the openend of arc striking component and static contact isolation switch, vertically be provided with stopper slot on the lateral wall of arc striking component, be provided with an end in stopper slot and be fixed on the banking pin on the static contact isolation switch inwall, the openend that banking pin is controlled arc striking component holds parallel with the outer face of static contact isolation switch with the other end of arc striking component with diapire in static contact isolation switch.
2. by tri-station isolating switch claimed in claim 1, it is characterized in that: described gear middle part is provided with the dwang that driven gear rotates, and dwang is driven by manual insulating bar, or drives by controlling machinery.
3. by tri-station isolating switch claimed in claim 1, it is characterized in that: the head of described Self-help contact terminal is provided with copper-tungsten section, and the head of Self-help contact terminal is spheroidal.
4. by tri-station isolating switch claimed in claim 1, it is characterized in that: described Self-help contact terminal top end face flushes with the outer face of the static contact isolation switch at place.
5. by tri-station isolating switch claimed in claim 1, it is characterized in that: described guide ring is positioned at the front and back ends of the watchband-shaped contactor on the static contact isolation switch inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110355187 CN102368445B (en) | 2011-11-11 | 2011-11-11 | Three-working-position isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110355187 CN102368445B (en) | 2011-11-11 | 2011-11-11 | Three-working-position isolation switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102368445A CN102368445A (en) | 2012-03-07 |
| CN102368445B true CN102368445B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110355187 Active CN102368445B (en) | 2011-11-11 | 2011-11-11 | Three-working-position isolation switch |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236370B (en) * | 2013-04-19 | 2015-03-04 | 镇江维依埃电工研究所有限公司 | Four-connecting-rod and three-workstation isolating switch |
| CN103489681B (en) * | 2013-10-10 | 2015-07-15 | 益和电气集团股份有限公司 | Contact terminal assembling tool for three-position switch |
| CN106611675A (en) * | 2015-10-27 | 2017-05-03 | 上海思源高压开关有限公司 | Compact three-position isolated earthing switch |
| CN106847579A (en) * | 2017-02-28 | 2017-06-13 | 山东达驰高压开关有限公司 | A kind of 252kV three-stations |
| CN109119280B (en) * | 2017-06-23 | 2021-10-29 | 河南平芝高压开关有限公司 | Isolation grounding switch and GIS equipment using same |
| CN109148204B (en) * | 2017-06-27 | 2022-06-21 | 河南平芝高压开关有限公司 | Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof |
| CN109346368A (en) * | 2018-11-28 | 2019-02-15 | 许继（厦门）智能电力设备股份有限公司 | A kind of structure of contact terminal of guillotine type disconnecting switch |
| CN114429879B (en) * | 2021-12-16 | 2024-03-22 | 河南平高电气股份有限公司 | Isolation static contact and three-station isolation grounding switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896491Y (en) * | 2006-05-23 | 2007-05-02 | 西安西开高压电气股份有限公司 | Composite module of three-work-position isolation switch and earthing switch |
| CN200990482Y (en) * | 2006-09-29 | 2007-12-12 | 希捷爱斯（上海）电气有限公司 | Direct acting three-station switch |
| CN201294194Y (en) * | 2008-10-23 | 2009-08-19 | 河南森源电气股份有限公司 | Arc initiating device of high voltage isolating switch |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | Self-elastic contact |
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2011
- 2011-11-11 CN CN 201110355187 patent/CN102368445B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896491Y (en) * | 2006-05-23 | 2007-05-02 | 西安西开高压电气股份有限公司 | Composite module of three-work-position isolation switch and earthing switch |
| CN200990482Y (en) * | 2006-09-29 | 2007-12-12 | 希捷爱斯（上海）电气有限公司 | Direct acting three-station switch |
| CN201294194Y (en) * | 2008-10-23 | 2009-08-19 | 河南森源电气股份有限公司 | Arc initiating device of high voltage isolating switch |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | Self-elastic contact |
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| CN102368445A (en) | 2012-03-07 |
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