CN2916908Y

CN2916908Y - Vacuum switch with upper and lower isolating structures

Info

Publication number: CN2916908Y
Application number: CN 200620104716
Authority: CN
Inventors: 朱佩龙
Original assignee: TIANAN (GROUP) CO Ltd NINGBO CITY
Current assignee: TIANAN (GROUP) CO Ltd NINGBO CITY
Priority date: 2006-06-12
Filing date: 2006-06-12
Publication date: 2007-06-27
Anticipated expiration: 2016-06-12

Abstract

A vacuum switch with upper and lower isolation is provided, which comprises a mechanism case and a bottom support. A three-phase insulation sleeve is positioned on the horizontal bottom support via the wall passing through method; three storage cavities are divided in each phase of the insulation sleeve and are provided respectively with an upper and lower isolation switches and a vacuum arc extinguish chamber for breaker; a three-phase upper and lower switch is respectively supported by an upper horizontal insulation rod and a lower horizontal insulation rod; the upper and lower isolating switches can be connected or isolated by operating an isolating operation main axle via a transmission mechanism I; the vacuum arc extinguish chamber can be switched on and off by operating the breaker operating main axle via a transmission mechanism II. The utility model, which integrates the upper and lower isolation switches and the vacuum arc extinguish chamber for the breaker and realizes the connection or isolation of the upper and lower isolation switches with one isolating operation main axle, has the advantages of simple and compact structure and little parts and components, which helps to reduce the cost and improve the reliability. During the application, the combined switch occupies no space, which brings much facility for pulling out, repairing and replacing the breaker.

Description

The vacuum switch that band is isolated up and down

Technical field

The utility model relates to a kind of High-Voltage Electrical Appliances technology, especially is with the vacuum switch of isolating up and down.

Background technology

Air-insulated Medium Voltage Switchgear type is divided two kinds, and a kind of is fixed, is called for short stationary cabinet, and another kind is a withdraw-type, is called for short the handcart cabinet.The press fit cabinet generally is at circuit breaker two independently isolating switches to be installed respectively into and out of the line both sides at present fixed, be formed by connecting with lead again, isolating switch and circuit breaker all are independent design, or by the different manufacturers supply, because two isolating switches will take very large space, make the middle press fit cabinet that is assembled into by isolating switch and circuit breaker long-pending bigger, and circuit breaker can't extract maintenance, replacing separately out, XGN2, KGN6 etc. are typically arranged in the market.China Patent No. 02256445,4 are called " a kind of novel high-voltage circuit-breaker one isolating switch combined electrical apparatus ", the technical scheme that discloses is that isolating switch and circuit breaker are combined into one, on the three-phase, on the following isolating switch, on following isolation switch carries out, following straight path operation realizes with last, following fixed contact is isolated or conducting, this has reduced to take up room to a certain extent, dwindled volume, but also have following defective: 1. its underframe is installed for vertical, on the three-phase, following isolating switch and breaker vacuum arc control device are directly installed on the underframe, structure is not compact, and is still influential to the volume of cupboard; 2. the upper and lower isolation switch of the upper and lower isolating switch of three-phase is driven by separately insulation axle respectively, has 6 and thoroughly does away with the edge axles, and operated respectively by 2 isolator operation axles, makes the transmission mechanism complexity, and parts are many.

Summary of the invention

Technical problem to be solved in the utility model be to overcome the defective of prior art and provide a kind of structure simpler, compacter, take up room littler when cabinet uses and can extract the vacuum switch that band that circuit breaker keeps in repair, changes is isolated up and down separately out joining.

Technical problem of the present utility model solves by following technical proposals: the vacuum switch that a kind of band is isolated up and down, and it comprises mechanism case and underframe; The last isolating switch that constitutes three-phase is made up of upper static contact that is installed in insulating base and last isolation switch, following isolating switch is made up of following fixed contact that is installed in down insulating base and following isolation switch, realizes that upper and lower isolating switch is isolated or the upper and lower isolation switch of three-phase of conducting is controlled contact conducting or the isolation that the upper and lower relatively fixed contact of transmission mechanism I carries out upper and lower straight path motion by the isolated operation main shaft; Controlling transmission mechanism II with the breaker vacuum arc control device of upper and lower isolating switch combination by the breaker operator main shaft realizes dividing, closing a floodgate; The every fixed contact of isolation switch by last transition touch base and last conductive plate and vacuum interrupter of going up mutually electrically contacts, the moving contact of vacuum interrupter by be flexible coupling, lower conducting plate and following transition touch base electrically contact with following isolation switch; It is characterized in that:

A, described underframe are that level is installed, and are fixing the three phase isolated sleeve pipe on it, and every three cavity volumes, three cavity volumes are provided with the last isolating switch of combination, following isolating switch and breaker vacuum arc control device respectively in every phase insulating sleeve;

Isolation switch is gone up insulation cross bar support and fixing by one on b, the described three-phase, and isolation switch is by a following insulation cross bar support and fixing under the three-phase.

Described transmission mechanism I comprises the chain wheel pair that is symmetricly set on isolated operation main shaft two ends, the output sprocket shaft is provided with synchronous rotating gear with it, this gear and a pair of rack-plate engagement of operation in opposite directions, the upper and lower end of a pair of rack-plate fixes with last insulation cross bar and following insulation cross bar respectively, and makes locking phase to operation under the guiding mechanism guiding.

Described guiding mechanism comprises a pair roller that is fixed on the rack-plate of both sides, and this roller slides and is fitted in the gathering sill of underframe side plate and mechanism case interior plate.

Described transmission mechanism II comprises the connecting lever that is connected on the breaker operator main shaft, this connecting lever with in establish excess of stroke spring insulated tension pole, fairlead, connecting lever, guide post be hinged and connected step by step, guide post is connected with moving contact.

The utility model compared with prior art, the base plate of level installation and the three phase isolated sleeve pipe that wall-penetrating type is installed have been adopted, every phase insulating sleeve has three cavity volumes, in each cavity volume aggregate erection upper and lower isolating switch and breaker vacuum arc control device, make the three integrated, simultaneously, isolation switch and following isolation switch are only supported respectively by upward insulate a cross bar and a following insulation cross bar on the three-phase, and make upper and lower isolating switch finish conducting or isolation simultaneously by an isolated operation main shaft.Advantage of the present utility model is to make structure simpler, compacter, parts reduce, help reducing cost, improve reliability, be combined in when using in the switch cubicle, the volume that more seems is little, it is little to take up room, when circuit breaker is in isolation at upper and lower isolating switch, can independently extract out as drawer and repair or replace, distinguish bus-bar room, breaker chamber, three functional units in cable vault and need not complicated connection bus.

Description of drawings

Fig. 1 is the utility model perspective view (having hidden upper and lower insulating base and upper and lower fixed contact).

Fig. 2 is the utility model gate-dividing state cutaway view (only showing a phase).

Fig. 3 is the upper and lower isolating switch "on" position of the utility model cutaway view (only shows a phase and comprise transmission mechanism II).

Fig. 4 is the utility model three-dimensional structure diagram (only shows a phase and comprise transmission mechanism I).

Fig. 5 is applied to the switch cubicle layout for the utility model.

Embodiment

Embodiment is described in detail the utility model again below in conjunction with accompanying drawing.

Shown in Fig. 1～5, the vacuum switch that band is isolated up and down, it comprises mechanism case 8 and the underframe 1 that fixes, and establishes two power sources in the mechanism case, drives isolated operation main shaft 32 and breaker operator main shaft 18 respectively.Underframe 1 is level to be installed, and the side plate of its end and mechanism case interior plate are perpendicular and be fixed with one.Fixing the three phase isolated sleeve pipe 5 that wall-penetrating type is installed on the underframe, every three cavity volumes, three cavity volumes are provided with the last isolating switch of combination, following isolating switch and breaker vacuum arc control device 16 respectively in every phase insulating sleeve.

Last isolating switch is made up of the upper static contact 12 and the last isolation switch 7 that are installed on the insulating base 11; Following isolating switch is made up of the following fixed contact 27 and the following isolation switch 10 that are installed in down in the insulating base 28.Realize upper and lower isolating switch conducting or isolate controlling, drive the upper and lower relatively fixed contact of the upper and lower isolation switch of three-phase through transmission mechanism I and carry out upper and lower straight path motion and contact conducting or isolation by an isolated operation main shaft 32.Isolation switch 7 is gone up insulation cross bar 6 supports and fixing by one on the three-phase; Isolation switch 10 is by following insulation cross bar 9 supports and fixing under the three-phase.

Form by fixed contact 15 and moving contact 23 with the breaker vacuum arc control device 16 of upper and lower isolating switch combination, drive, drive branch, the combined floodgate of dynamic and static contact through transmission mechanism II by breaker operator main shaft 18.

Every last isolation switch 7 of going up isolating switch mutually electrically contacts all the time by last transition touch base 13 and last conductive plate 14 fixed contact 15 with vacuum interrupter, the moving contact 23 of vacuum interrupter by be flexible coupling 25, lower conducting plate 26 and following transition touch base 29 electrically contact with following isolation switch 10 all the time.

Described transmission mechanism I as shown in Figure 4, comprise the chain wheel pair of forming by sprocket wheel and chain 31 that is symmetricly set on isolated operation main shaft 32 two ends, on the output sprocket shaft, be provided with synchronous rotating gear 30 with it, this gear is a pair of rack-plate 2 engagement of guiding with the guiding mechanism with operation in opposite directions, on a pair of rack-plate, the lower end fixes with last insulation cross bar 6 and following insulation cross bar 9 ends respectively, the operation in opposite directions of a pair of rack-plate drives upward insulate cross bar and following insulation cross bar locking phase to operation, and then drive to go up isolation switch and following isolation switch and insert upper static contact and following fixed contact respectively and conducting, otherwise isolation.Described guiding mechanism comprises a pair roller 4 that is fixed on the both sides rack-plate 2, and this roller slides in the gathering sill 3 that is fitted in underframe side plate and mechanism case interior plate and leads along the gathering sill slippage.

Described transmission mechanism II as shown in Figure 2, comprise the connecting lever 17 of solid welding on breaker operator main shaft 18, this connecting lever with in establish excess of stroke spring 20 insulated tension pole 19, fairlead 21, connecting lever 22, guide post 24 be hinged and connected step by step, guide post is connected with moving contact 23.

When switching circuit needs conducting to close a floodgate, drive the isolated operation main shaft by the mechanism case internally-powered earlier, the upper and lower isolation switch of upper and lower isolating switch is inserted in the upper and lower fixed contact.As shown in Figure 3, isolating switch is in the combined floodgate conducting state, at this moment, when the breaker vacuum arc extinguishing closes a floodgate, electric current by upper static contact 12, go up isolation switch 7, go up transition touch base 13, go up conductive plate 14, fixed contact 15, moving contact 23, be flexible coupling 25, lower conducting plate 26, down transition touch base 29, down isolation switch 10, fixed contact 27 forms the circuit output current down.

When switching circuit need be isolated separating brake, reversible control isolated operation main shaft made upper and lower isolation switch break away from upper and lower fixed contact, and circuit promptly is in the isolation gate-dividing state, as shown in Figure 2.

When the utility model is applied to switch cubicle, naturally form three functional areas in upper, middle and lower: bus-bar room 33, breaker chamber 34, cable vault 35, as shown in Figure 5, simplified the connection bus of each functional unit greatly, behind upper and lower isolating switch separating brake, whole circuit breaker can be extracted maintenance out, change.

Claims

1, a kind of band vacuum switch of isolating up and down, it comprises mechanism case (8) and underframe (1); The last isolating switch that constitutes three-phase is made up of upper static contact that is installed in insulating base (11) (12) and last isolation switch (7), following isolating switch is made up of following fixed contact (27) that is installed in down insulating base (28) and following isolation switch (10), realizes that upper and lower isolating switch is isolated or the upper and lower isolation switch of three-phase of conducting is controlled contact conducting or the isolation that the upper and lower relatively fixed contact of transmission mechanism I carries out upper and lower straight path motion by isolated operation main shaft (32); Controlling transmission mechanism II with the breaker vacuum arc control device (16) of upper and lower isolating switch combination by breaker operator main shaft (18) realizes dividing, closing a floodgate; Every isolation switch (7) of going up mutually electrically contacts by last transition touch base (13) and last conductive plate (14) fixed contact (15) with vacuum interrupter, and the moving contact of vacuum interrupter (23) electrically contacts by be flexible coupling (25), lower conducting plate (26) and following transition touch base (29) and following isolation switch (10); It is characterized in that:

A, described underframe (1) are installed for level, are fixing three phase isolated sleeve pipe (5) on it, and every three cavity volumes, three cavity volumes are provided with the last isolating switch of combination, following isolating switch and breaker vacuum arc control device respectively in every phase insulating sleeve;

Isolation switch (7) is gone up insulation cross bar (6) support and fixing by one on b, the described three-phase, and isolation switch under the three-phase (10) is supported by a following insulation cross bar (9) and be fixing.

2, the band according to claim 1 vacuum switch of isolating up and down, it is characterized in that described transmission mechanism I comprises the chain wheel pair (31) that is symmetricly set on isolated operation main shaft (32) two ends, the output sprocket shaft is provided with synchronous rotating gear (30) with it, this gear meshes with a pair of rack-plate (2) of operation in opposite directions, the upper and lower end of a pair of rack-plate (2) fixes with last insulation cross bar (6) and following insulation cross bar (9) respectively, and makes locking phase to operation under the guiding mechanism guiding.

3, the band according to claim 2 vacuum switch of isolating up and down, it is characterized in that described guiding mechanism comprises a pair roller (4) that is fixed on the both sides rack-plate (2), this roller slides and is fitted in the gathering sill (3) of underframe side plate and mechanism case interior plate.

4, the band according to claim 1 vacuum switch of isolating up and down, it is characterized in that described transmission mechanism II comprises the connecting lever (17) that is connected on the breaker operator main shaft (18), this connecting lever with in establish excess of stroke spring (20) the anti-bar of insulation (19), fairlead (21), connecting lever (22), guide post (24) be hinged and connected step by step, guide post (24) is connected with moving contact (23).