CN203850196U - Solid-insulation fully sealed three-station isolating switch - Google Patents
Solid-insulation fully sealed three-station isolating switch Download PDFInfo
- Publication number
- CN203850196U CN203850196U CN201420143408.XU CN201420143408U CN203850196U CN 203850196 U CN203850196 U CN 203850196U CN 201420143408 U CN201420143408 U CN 201420143408U CN 203850196 U CN203850196 U CN 203850196U
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- isolation
- insulation
- isolating switch
- isolating
- contact seat
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Abstract
A solid-insulation fully sealed three-station isolating switch settles the problems of power failure line segment electrification of a main loop caused by fracture breakdown or flashover existing in false fracture of an existing isolating switch. The solid-insulation fully sealed three-station isolating switch comprises the components of: an insulating arc-isolating cover, an insulating connected wire outlet base plate, an isolating stationary contact base and an isolating movable contact base. The solid-insulation fully sealed three-station isolating switch is technologically characterized in that: an upper sealing gasket and a lower sealing gasket are respectively assembled at the jointing parts between the insulating arc-isolating cover and the insulating connected wire outlet base plate that are jointed together through butt-jointing; a metal shielding ground plate is clamped between the sealing gaskets which are jointed through butt-jointing, thereby realizing full sealing; the isolating stationary contact base is fixedly mounted at the upper end in the insulating arc-isolating cover; the isolating movable contact base is fixedly mounted on the insulating connected wire outlet base plate with a wire outlet cone; the side wall of the insulating arc-isolating cover is provided with an upper observation window and a lower observation window; and the wire outlet end of the insulating connected wire outlet base plate is connected with the wire outlet cone through an equal-voltage induction shielding ring. The solid-insulation fully sealed three-station isolating switch has advantages of: reasonable structure design, high dielectric strength and visible isolation fracture. A true isolating switch facture without false facture is realized. Safety and reliability in isolation are remarkably improved.
Description
Technical field
The utility model relates to a kind of insulated switch unit for solid insulation cabinet, and particularly a kind of solution isolating switch that is applicable to solid insulation cabinet in three-phase alternating current electrical network exists the solid insulated full-sealed tri-station isolating switch of false fracture problem.
Background technology
At present, the solid insulation cabinet in the three-phase alternating current electrical network of domestic production, according to pertinent literature report, aspect isolating switch fracture, large multi-product still adopts traditional air-insulated isolating switch, earthed switch.As " a kind of sealing full-vacuum switching device " that publication No. is CN102360986A, it adopts vacuum interrupter chamber as isolation ground connection galvanic circle.The shortcoming of this device is without visual fracture, and current domestic vacuum on-line monitoring technique also do not pass a test, once vacuum interrupter chamber gas leakage will jeopardize operating personnel's life.If publication No. is " solid isolated vacuum ring main unit " that CN102664363A records, the structure of employing is that standard electric cable end, standard silicone rubbers dry type bus are arranged on the vacuum switch unit in cabinet by screw; Standard electric cable end, standard silicone rubbers dry type bus are arranged on respectively on the cable plug and bus plug of pole.Three station vacuum arc extinguish chambers that adopt, himself have combined floodgate, separating brake isolation, ground connection totally three service positions, have simplified the structure of switch; Because all electrified bodies are all poured into a mould or are arranged in epoxy resin, can not be subject to the impact of external environment condition on the electric property of ring main unit, reduced equipment maintenance, extended useful life.But owing to adopting vacuum interrupter to do isolating switch, its fracture is invisible, once there is mechanical breakdown or vacuum interrupter gas leakage, will jeopardizes personal safety, and not meet standard-required.Its vacuum interrupter horizontal positioned, porcelain shell is subject to Lateral Force, easily break, and operation insulator fairlead frictional resistance is large.There is blow-by or poorly sealed problem in circuit breaker inlet wire.As notification number be CN202230967U " indoor high-voltage vacuum circuit breaker, isolation and earthed switch combined electrical apparatus ", disclosed complex structure, in practical operation, center is difficult to control, and isolating switch is simple air insulation, there is no solid insulation, do not possess rapid closing function, do not there is the ability that closes short circuit current.
It is that CN203367118U and publication No. are " three station isolation grounding switchs " of CN 103325606A that the applicant once goes out a kind of notification number for the Design of Problems of above-mentioned existence, existing solid insulation three station isolation grounding switchs have been solved preferably without visual fracture, without closing short circuit current ability, without sealing or the problem such as poorly sealed.But what adopt because of this isolating switch fracture is the version of " false fracture ", exactly the static contact seat of fracture two ends, moving contact seat is arranged on same insulating part.When switch is during in gate-dividing state, insulation property between dynamic and static touch base are determined along face creepage distance jointly by the air between dynamic and static touch base, insulating part, this just need to carry out analysis of electric field and optimization to this fracture, adopts technical measures to make electric field even, reduces work field intensity.Because this isolation fracture exists the edge flashing factor of insulating part, so greatly increased the probability that fracture punctures.The isolation fracture of this structure punctures or flashover will make the power failure line segment of major loop charged, likely increases the probability of casualties.And with the impact of environment, insulating material aging, this leakage current along face can increase, insulation property can decline, and product reliability is exerted an influence.For this reason, solving the problem of solid insulation ring main unit isolating switch " false fracture ", is the key problem in technology that improves its isolation features security reliability.
Utility model content
The purpose of this utility model is to provide a kind of solid insulated full-sealed tri-station isolating switch, solved that fracture that existing tri-station isolating switch " false fracture " exists punctures or flashover will make the power failure line segment of major loop charged, increase the problems such as probability that fracture punctures, its reasonable in design, dielectric strength is high, isolation fracture is visible, realizes the isolating switch fracture of real not existing " false fracture ", significantly improves the security reliability of isolation.
The technical scheme that the utility model adopts is: this solid insulated full-sealed tri-station isolating switch comprises insulation arc insulating cover, insulation disjunctor outlet base plate, have and close, the isolation static contact seat of separating brake isolation and ground connection effect and isolation moving contact seat, its technical essential is: utilize in the seal groove of joint of described insulation arc insulating cover that bolted is docking together and insulation disjunctor outlet base plate, be assembled with respectively, lower seal pad, between the sealing gasket of two docking, clamp the metallic shield ground plate that metallic plate is made, realize the hermetically sealed of metallic shield ground connection between two insulators, isolation static contact seat is packed in the upper end in the insulation arc insulating cover of isolation, isolation moving contact seat is packed on the insulation disjunctor outlet base plate with outlet cone of isolation, at insulation arc insulating cover sidewall, over against the Jing Daochu that isolates static contact seat, observation window is set, in moving knife and lower earthing junction over against isolation moving contact seat, lower observation window is set, the leading-out terminal of insulation disjunctor outlet base plate answers shading ring to connect outlet cone by having the equal pressure sensitivity of condenser type electrified sensor function.
Described insulation arc insulating cover outer surface metallizing bonding layer.
The Pressure gauge of Real-Time Monitoring internal pressure is set on described insulation arc insulating cover.
Advantage and the good effect that the utlity model has are: due to of the present utility model, utilize in bolted the insulation arc insulating cover being docking together and the disjunctor outlet base plate that insulate, isolation static contact seat is packed in the upper end in the insulation arc insulating cover of isolation, isolation moving contact seat is packed on the insulation disjunctor outlet base plate with outlet cone of isolation, the quiet cutter of the moving knife of isolation moving contact seat and isolation static contact seat is contained in respectively on two insulators, and make between the sealing gasket in the seal groove of two joints, clamp the metallic shield ground plate that metallic plate is made, thereby realize the hermetically sealed of metallic shield ground connection between two insulators, so its reasonable in design, dielectric strength is high.Utilize metallic shield ground plate to introduce insulator from insulator exterior along its surrounding inner, the insulator of the insulator of isolation static contact seat and isolation moving contact seat is played to the effect of metal ground connection isolation, the creepage distance of electric-conductor of the isolation moving contact seat on isolation static contact seat on arc insulating cover and insulation disjunctor outlet base plate of making to insulate all meets 240mm, and air insulation distance all meets 125mm.Once the fracture that has open position between isolation static contact seat and isolation moving contact seat, there is the edge flashing factor of insulator, all can be first by the direct ground connection of metallic shield ground plate.Insulation arranges the Pressure gauge of Real-Time Monitoring internal pressure on arc insulating cover, has prevented because external environment condition penetrates into the inner wet gas of insulator, produces condensation etc. and affects built-in electrical insulation.In addition, at insulation arc insulating cover sidewall, over against the Jing Daochu that isolates static contact seat, observation window is set, in moving knife and lower earthing junction over against isolation moving contact seat, lower observation window is set, isolation fracture is visible, can observe clearly whether isolation knife closes a floodgate accurately and ground connection puts in place, realize the isolating switch fracture of real not existing " false fracture ", significantly improve the security reliability of isolation.Therefore, the utility model has solved that fracture that existing tri-station isolating switch " false fracture " exists punctures or flashover will make the power failure line segment of major loop charged, increases the problems such as probability that fracture punctures.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is the plan front view of Fig. 1;
Fig. 3 is the planar side view of Fig. 1.
Sequence number explanation in figure: on 1 insulation arc insulating cover, 2, sealing gasket, 3 metallic shield ground plates, 4 lower seal pads, 5 isolation static contact seats, 6 isolation moving contact seats, 7 insulation disjunctor outlet base plates, 8 times earthings, 9 equal pressure sensitivity are answered observation window, 12 times observation windows in shading ring, 10 outlet cones, 11.
Embodiment
According to Fig. 1～3, describe concrete structure of the present utility model and the course of work in detail.This solid insulated full-sealed tri-station isolating switch comprises the arc insulating cover 1 that insulate, insulation disjunctor outlet base plate 7, has the isolation static contact seat 5 of the isolation of splitting or integrating lock and ground connection effect and isolates the parts such as moving contact seat 6.The arc insulating cover 1 that wherein insulate utilizes bolted to be docking together with insulation disjunctor outlet base plate 7.Be equipped with on the insulator of insulation arc insulating cover 1 of isolation static contact seat 5, from charged isolation static contact seat 5 conducting positions by insulator, along the surface creepage distance of insulator, meet more than the 240mm stipulating in national standard along face creepage distance.Be equipped with on the insulator with insulation disjunctor outlet base plate 7 of isolation moving contact seat 6, from isolation moving contact seat electric-conductor position by insulator, along the surface creepage distance of insulator, meet more than the 240mm stipulating in national standard along face creepage distance.Isolation static contact seat 5 and isolation moving contact seat 6 two insulators independently, in the position that meets creepage distance 240mm as joint.In the seal groove of the two joint, be assembled with respectively upper and lower sealing gasket 2,4, between the upper and lower sealing gasket 2,4 of two docking, clamp the metallic shield ground plate 3 that metallic plate is made.It is inner that metallic shield ground plate 3 is introduced insulator from insulator exterior along its surrounding, isolation static contact seat 5 insulators and isolation moving contact seat 6 insulators are played to the effect that metal ground connection is isolated, creepage distance to the electric-conductor of the isolation moving contact seat 6 on the isolation static contact seat 5 on insulation arc insulating cover 1 and insulation disjunctor outlet base plate 7 all meets 240mm, and air insulation distance all meets 125mm.Pass through so the upper and lower sealing gasket 2,4 of joint and two insulator bolted of metallic shield ground plate 3, thereby between the insulation arc insulating cover 1 achieving a butt joint and two insulators of insulation disjunctor outlet base plate 7, metallic shield ground connection is hermetically sealed.Because the isolation static contact seat 5 of isolating switch is packed in the upper end in the insulation arc insulating cover 1 of isolation, isolation moving contact seat 6 is packed on the insulation disjunctor outlet base plate 7 with outlet cone 10 of isolation, institute so that the moving knife of isolation moving contact seat 6 and the quiet cutter of isolating static contact seat 5 be contained in respectively on two insulators.At insulation arc insulating cover 1 sidewall, over against the Jing Daochu that isolates static contact seat 5, observation window 11 is set, in moving knife and lower earthing 8 junctions over against isolation moving contact seat 6, lower observation window 12 is set, observation window seals by O-ring seal, can observe clearly whether isolation knife closes a floodgate accurately and ground connection puts in place.The leading-out terminal of insulation disjunctor outlet base plate 7 answers shading ring 9 to connect outlet cone 10 by having the equal pressure sensitivity of condenser type electrified sensor function, whether chargedly can detect line end.Insulation arc insulating cover 1 outer surface adopts electrode spray zinc technology metallizing bonding layer.Accomplish surface metallation of insulator ground connection, prevent that human body from touching the danger that electric shock occurs.
Because it has realized the hermetically sealed of metallic shield ground connection between the insulation arc insulating cover 1 of docking and two insulators of insulation disjunctor outlet base plate 7, therefore once the fracture that has open position between isolation static contact seat 5 and isolation moving contact seat 6, there is the edge flashing factor of insulator, all can be first by the direct ground connection of metallic shield ground plate 3.Therefore, can never make the aging of insulating material with the impact of environment, this leakage current along face increases, decreasing insulating, and puncture isolation fracture or flashover makes the power failure line segment of major loop charged, the phenomenon that increases casualties probability occurs.By the above-mentioned structural design of having optimized, just there is not false fracture, accomplished real isolating switch fracture, fundamentally solved the problem of isolating switch solid insulated full-sealed isolating switch fracture.
Insulation arranges the Pressure gauge (not shown) of Real-Time Monitoring internal pressure on arc insulating cover 1, and internal pressurization is filled the pressure 0.04MPA that purifies air, and has prevented because external environment condition penetrates into the inner wet gas of insulator, produces condensation etc. and affects built-in electrical insulation.
Claims (3)
1. a solid insulated full-sealed tri-station isolating switch, comprise insulation arc insulating cover, insulation disjunctor outlet base plate, isolation static contact seat and the isolation moving contact seat with the isolation of splitting or integrating lock and ground connection effect, it is characterized in that: utilize in the seal groove of joint of described insulation arc insulating cover that bolted is docking together and insulation disjunctor outlet base plate, be assembled with respectively upper and lower sealing gasket, between the sealing gasket of two docking, clamp the metallic shield ground plate that metallic plate is made, realize the hermetically sealed of metallic shield ground connection between two insulators; Isolation static contact seat is packed in the upper end in the insulation arc insulating cover of isolation, isolation moving contact seat is packed on the insulation disjunctor outlet base plate with outlet cone of isolation, at insulation arc insulating cover sidewall, over against the Jing Daochu that isolates static contact seat, observation window is set, in moving knife and lower earthing junction over against isolation moving contact seat, lower observation window is set, the leading-out terminal of insulation disjunctor outlet base plate answers shading ring to connect outlet cone by having the equal pressure sensitivity of condenser type electrified sensor function.
2. solid insulated full-sealed tri-station isolating switch according to claim 1, is characterized in that: described insulation arc insulating cover outer surface metallizing bonding layer.
3. solid insulated full-sealed tri-station isolating switch according to claim 1, is characterized in that: the Pressure gauge that Real-Time Monitoring internal pressure is set on described insulation arc insulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143408.XU CN203850196U (en) | 2014-03-28 | 2014-03-28 | Solid-insulation fully sealed three-station isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143408.XU CN203850196U (en) | 2014-03-28 | 2014-03-28 | Solid-insulation fully sealed three-station isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850196U true CN203850196U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420143408.XU Withdrawn - After Issue CN203850196U (en) | 2014-03-28 | 2014-03-28 | Solid-insulation fully sealed three-station isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850196U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839727A (en) * | 2014-03-28 | 2014-06-04 | 杨明 | Solid insulation full-sealed three-position disconnecting switch |
| CN104701755A (en) * | 2015-03-25 | 2015-06-10 | 厦门顾德益电器有限公司 | Solid insulating cabinet with observing barrel |
| CN106486913A (en) * | 2015-08-31 | 2017-03-08 | 河北电力装备有限公司 | A kind of environmental protection gas-insulated ring network cabinet |
-
2014
- 2014-03-28 CN CN201420143408.XU patent/CN203850196U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839727A (en) * | 2014-03-28 | 2014-06-04 | 杨明 | Solid insulation full-sealed three-position disconnecting switch |
| CN103839727B (en) * | 2014-03-28 | 2015-08-05 | 杨明 | Solid insulated full-sealed tri-station isolating switch |
| CN104701755A (en) * | 2015-03-25 | 2015-06-10 | 厦门顾德益电器有限公司 | Solid insulating cabinet with observing barrel |
| CN104701755B (en) * | 2015-03-25 | 2017-02-22 | 厦门顾德益电器有限公司 | Solid insulating cabinet with observing barrel |
| CN106486913A (en) * | 2015-08-31 | 2017-03-08 | 河北电力装备有限公司 | A kind of environmental protection gas-insulated ring network cabinet |
| CN106486913B (en) * | 2015-08-31 | 2018-05-01 | 河北电力装备有限公司 | A kind of environmental protection gas-insulated ring network cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140924 Effective date of abandoning: 20150805 |
|
| RGAV | Abandon patent right to avoid regrant |