CN205264587U - Three -station isolation switch and cubical switchboard that has it - Google Patents

Abstract

The utility model discloses a three -station isolation switch and cubical switchboard that has it, three -station isolation switch includes: casing and switch body, inject the sealing gas room in the casing, the switch body includes grounding contact, quiet blade holder, the static contact, switch base member and switch assembly, wherein, grounding contact installs at sealing gas indoorly, quiet blade holder is installed on the casing, the static contact is installed on quiet blade holder and to be located sealing gas indoor, the switch base member is installed on the casing and is not contacted with quiet blade holder, the switch assembly is including installing switch motion mechanism and the on -off operation mechanism on the switch base member, switch motion mechanism establishes at sealing gas indoorly and by on -off operation mechanism controls in the combined floodgate position with the static contact joint, ground connection position with the grounding contact joint, and be located and switch between the separating brake position of closing a floodgate between position and the ground connection position. According to the utility model discloses a three -station isolation switch, reasonable in design, manufacture process are simple relatively, and small, light in weight, stable performance, action are reliable.

Description

Tri-station isolating switch and the switch cubicle with it

Technical field

The utility model relates to technical field of power systems, especially relates to a kind of tri-station isolating switch and has its switch cubicle.

Background technology

In correlation technique, point out, isolating switch is one of key equipment of power supply industry, Main Function in: after separating brake, set up reliable clearance for insulation, the equipment of needs maintenance or circuit and power supply separated with an obvious cut-off point, to ensure the safety of maintainer and equipment; According to operation needs, changing-over circuit; Can be used to point, little electric current in zygonema road, as the charging current of sleeve pipe, bus, connector, stub cable, the capacitance current of switch equalizing capacitance, circulation when double-bus changing-over and the exciting current of voltage transformer etc.; According to the concrete condition of different types of structure, can be used to point, the open-circuit excitation electric current of unification constant volume transformer.

Earthed switch is one of key equipment of carrying electric equipment Industry, is mainly used in the maintenance of equipment, in order to prevent sending a telegram here suddenly in maintenance process, and therefore must be by all ground connection of the two ends of repair apparatus. Be applied to the earthed switch of medium-voltage distribution cabinet, be generally output load side joint ground, in the time of our examination and repair for high-pressure power distribution cabinet load side (as: fastening bolt, dismounting cable etc.), will section breaker, the earthed switch of power distribution cabinet closes simultaneously, can preventing like this that suddenly incoming call causes can drain residual charge by electric shock accidents in addition, is conducive to maintenance safety.

The corresponding size of the isolating switch of current use and earthed switch is larger, mostly is machined piece assembling, because the precision of machining accuracy and assembling is not high, cause its reliability not high, and tri-station isolating switch volume matching used with it is comparatively bigger than normal. Also make the reliability of isolation and earthed switch poor because of factors such as insulating properties, Material texture, environments for use, thereby manufacturing cost and operation expense are increased greatly.

Utility model content

The utility model is intended at least solve one of technical problem existing in prior art. For this reason, the utility model is to propose a kind of tri-station isolating switch, and described tri-station isolating switch is small and exquisite, compact, security reliability is high.

The utility model also proposes a kind of switch cubicle with above-mentioned tri-station isolating switch.

According to tri-station isolating switch of the present utility model, comprising: housing, limits sealed air chamber in described housing, and Switch main body, described Switch main body comprises grounding contact, quiet tool rest, static contact, switch matrix and switch assembly, wherein, described grounding contact is arranged in described sealed air chamber, described quiet tool rest is arranged on described housing, described static contact is arranged on described quiet tool rest and is positioned at described sealed air chamber, described switch matrix is arranged on described housing and not and contacts with described quiet tool rest, described switch assembly comprises the switch motion mechanism and the switch operating mechanism that are arranged on described switch matrix, described switch motion mechanism is located at and in described sealed air chamber and by described switch operating mechanism, is controlled at the closing position engaging with described static contact, the ground connection position engaging with described grounding contact, and switch between the sub-gate position between described closing position and described ground connection position.

According to tri-station isolating switch of the present utility model, reasonable in design, manufacture process is relatively simple, volume is little, lightweight, stable performance, reliable in action.

In certain embodiments, described switch motion mechanism comprises the three-phase isolation switch blade being arranged side by side, described switch matrix comprises four the first insulating barriers that are arranged side by side, and between every two adjacent described the first insulating barriers, is provided with a mutually described isolating switch blade.

In certain embodiments, described four the first insulating barriers and described switch matrix one moulding by casting.

In certain embodiments, described switch matrix comprises three binding post mount pads that are arranged side by side, described switch assembly comprises and is arranged on respectively three three-phase terminal in described binding post mount pad, every mutually described binding post all with the described isolating switch blade electrical connection of corresponding phase.

In certain embodiments, the end of every mutually described binding post is equipped with the moving knife seat stretching in described sealed air chamber, and one end of every mutually described isolating switch blade is hinged with corresponding described moving knife seat.

In certain embodiments, along the direction away from described sealed air chamber, the cross-sectional area of each described binding post mount pad all reduces gradually.

In certain embodiments, each described binding post mount pad all with described switch matrix one moulding by casting, every mutually described binding post is all connected with corresponding described binding post mount pad cast.

In certain embodiments, on the surface of described switch matrix, be formed with at least annular seal groove around three described binding post mount pads.

In certain embodiments, described switch assembly comprises and the corresponding connected three-phase electrified sensor respectively of binding post described in three-phase.

In certain embodiments, every mutually described electrified sensor is all connected with described switch matrix cast.

In certain embodiments, described switch operating mechanism comprises: operation axis, and described operation axis is installed in rotation on described switch matrix; And linked component, described linked component is three and corresponding with isolating switch blade described in three-phase connected respectively, each described linked component includes interlock connecting lever and interlock pull bar, one end of described interlock connecting lever is connected with described main shaft, the other end of one end of described interlock pull bar and described interlock connecting lever is hinged, and the other end of described interlock pull bar is hinged with the described isolating switch blade of corresponding phase.

In certain embodiments, described switch matrix comprises the main shaft mount pad for described operation axis is installed, and described main shaft mount pad is connected with described switch matrix cast.

In certain embodiments, on the periphery wall of described interlock pull bar, there is anti-tracking protruding stupefied.

In certain embodiments, described static contact is three-phase, and described quiet tool rest comprises four the second insulating barriers that are arranged side by side, and between every two adjacent described the second insulating barriers, is provided with a mutually described static contact.

In certain embodiments, three described the second insulating barriers in four described the second insulating barriers are embedded with connector, and static contact is fixed on corresponding described the second insulating barrier by the described connector of correspondence respectively described in three-phase.

In certain embodiments, described tri-station isolating switch further comprises: for the ground connection tool rest of described grounding contact is installed, described ground connection tool rest is arranged on described switch matrix and with described switch matrix cast and is connected.

In certain embodiments, described quiet tool rest is provided with mounting groove, is provided with the installation crossbeam being engaged in described mounting groove in described housing, and described quiet tool rest is arranged on described installation crossbeam.

In certain embodiments, described housing is metal Stainless Steel Shell.

In certain embodiments, described switch matrix is poured with epoxy resin profiled member.

In certain embodiments, described quiet tool rest is poured with epoxy resin profiled member.

According to the switch cubicle of the utility model second aspect, comprise according to tri-station isolating switch of the present utility model.

According to switch cubicle of the present utility model, by above-mentioned tri-station isolating switch is set, thereby improve the overall performance of switch cubicle.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Brief description of the drawings

Fig. 1 is according to the profile of the tri-station isolating switch of the utility model embodiment;

Fig. 2 is the side view of the tri-station isolating switch shown in Fig. 1;

Fig. 3 is the front view of the tri-station isolating switch shown in Fig. 2;

Fig. 4 is the front view of the quiet tool rest shown in Fig. 1;

Fig. 5 is the profile of the quiet tool rest shown in Fig. 4.

Reference numeral:

Tri-station isolating switch 100; Housing 1; Crossbeam 11 is installed; Switch matrix 21; The first insulating barrier 211; Binding post mount pad 212; Main shaft mount pad 213; Form mount pad 214; Seal groove 215; Electrified sensor mount pad 216; Binding post 22; Moving knife seat 221; Isolating switch blade 231,231 ', 231 "; Interlock pull bar 232; Protruding stupefied 2321; Interlock connecting lever 233; Operation axis 234; Electrified sensor 24; Output termination 241; Quiet tool rest 25; The second insulating barrier 251; Installation base portion 252; Mounting groove 253; Installing hole 254; Nut 255; Static contact 26; Ground connection tool rest 27; Grounding contact 28; External connecting lever 200; Connection-peg 300.

Detailed description of the invention

Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish. Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

Disclosing below provides many different embodiment or example to be used for realizing different structure of the present utility model. Of the present utility model open in order to simplify, hereinafter the parts to specific examples and setting are described. Certainly, they are only example, and object does not lie in restriction the utility model. In addition, the utility model can be in different examples repeat reference numerals and/or letter. This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting. In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.

The utility model is to provide miniaturization tri-station isolating switch 100 and the switch cubicle that a kind of miniaturization, security performance are high, adopt environment-friendly materials and gas, thereby improve power supply reliability and power supply quality, realize electrical network equipment to environmental protection, high security, high reliability, miniaturization, integrated direction development, simplify electric pressure, build dual-ring network, make high voltage go deep into load center, strengthen the objects such as city web frame.

Describe according to the tri-station isolating switch 100 of a specific embodiment of the utility model below with reference to Fig. 1-Fig. 5.

With reference to Fig. 1, tri-station isolating switch 100 comprises housing 1 and Switch main body, wherein, housing 1 can be by the machine-shaping of metal stainless sheet steel, with the effect to installation and support to switch main body, in housing 1, limit sealed air chamber 101 so that Switch main body is divided into and be positioned at the inside and outside two parts of sealed air chamber 101. Wherein, Switch main body can comprise: switch matrix 21, three-phase terminal 22 (such as cable incoming-outgoing line terminals), three-phase isolation switch blade 231, three interlock pull bars 232, three interlock connecting levers 233, operation axis 234, three-phase electrified sensor 24 (such as charged demonstration sensor), quiet tool rest 25, three-phase static contact 26, three ground connection tool rests 27 and three-phase ground contact 28 etc. Here, it should be noted that, " phase " refers to the every phase in " three-phase electricity ".

With reference to Fig. 1, quiet tool rest 25 is arranged on housing 1, and switch matrix 21 is arranged on housing 1 and not and contacts with quiet tool rest 25. That is to say, switch matrix 21 and quiet tool rest 25 are Split insulating structure, i.e. two independent and mutual discontiguous insulating elements. For example, in the example of Fig. 1; switch matrix 21 is arranged on respectively on housing 1 with quiet tool rest 25; to be combined into complete tri-station isolating switch 100 by the seal casinghousing 1 of metal stainless sheet steel machine-shaping, in order to realize the safeguard protection of connection, isolation and ground connection to the electric current of flowing through. Thus, can effectively avoid switch matrix 21,25 of quiet tool rests to occur the possibility of leakage current, improve the security performance of isolation.

With reference to Fig. 1, grounding contact 28 is arranged in sealed air chamber 101, static contact 26 is arranged on quiet tool rest 25 and is positioned at sealed air chamber 101, switch assembly comprises the switch motion mechanism and the switch operating mechanism that are arranged on switch matrix 21, switch motion mechanism is located in sealed air chamber 101 and is controlled at the closing position (for example isolating switch blade 231 status in Fig. 1) engaging with static contact 26 by switch operating mechanism, the ground connection position (for example isolating switch blade 231 ＇ status in Fig. 1) engaging with grounding contact 28, and for example, switch between sub-gate position between closing position and ground connection position (isolating switch blade 23 in Fig. 1 " status).

Thus, according to the tri-station isolating switch 100 of the utility model embodiment, reasonable in design, manufacture process is relatively simple, volume is little, lightweight, stable performance, reliable in action, no matter aspect economy or in electric product application, all there is extremely strong practicality and advance, there is high electrical safety performance, be the strong guarantee of power supply reliability, be also to reduce the precondition of customer investment. In other words, according to the tri-station isolating switch 100 of the utility model embodiment, effectively solved that in correlation technique, isolating switch volume is bigger than normal, security performance is poor, extensibility is poor, installation is inconvenient, reliability is poor, manufacturing cost and the higher problem of operation expense, and use SF6 gas arc extinguishing and insulation etc. to bring the problem of severe contamination to environment.

In an embodiment of the present utility model, quiet tool rest 25 is for insulating part and can adopt poured with epoxy resin to make. Thus, the hydrophobicity of quiet tool rest 25 is good, can not cause the danger that pernicious gas and liquid are revealed, thereby can not give environment, and in servicely not affected by surrounding environment, condensation and filth etc.

As shown in Figure 1 and Figure 4, static contact 26 is three-phase, and quiet tool rest 25 comprises four the second insulating barriers 251 that are arranged side by side, and between every two adjacent the second insulating barriers 251, is provided with a phase static contact 26. For example, quiet tool rest 25 itself can water and outpour four side by side and the second insulating barrier 251 of spaced apart setting, to strengthen the second insulating barrier 251 insulating properties each other and insulating properties relatively, between every two adjacent the second insulating barriers 251, a phase static contact 26 is set. Thus, the compact conformation of tri-station isolating switch 100, small and exquisite, insulating reliability is high and functional reliability is high.

Preferably, with reference to Fig. 1, Fig. 4 and Fig. 5, three the second insulating barriers 251 in four the second insulating barriers 251 are embedded with connector, and three-phase static contact 26 is fixed on corresponding the second insulating barrier 251 by corresponding connector respectively. For example, in the example of Fig. 4 and Fig. 5, three the second insulating barriers 251 in four the second insulating barriers 251 have installation base portion 252, and each installation base portion 252 is interior can be embedded the static contact 26 of connectors (for example nut 255) for fixing corresponding phase. Thus, the simple installation of static contact 26, installation reliability is high.

For example, in a concrete example of the present utility model, quiet tool rest 25 is provided with mounting groove 253, is provided with the installation crossbeam 11 being engaged in mounting groove 253 in housing 1, and quiet tool rest 25 is arranged on to be installed on crossbeam 11. With reference to Fig. 1, Fig. 4 and Fig. 5, on diapire in housing 1, can be provided with for quiet tool rest 25 and ride the installation crossbeam 11 of establishing, on the diapire of quiet tool rest 25, be formed with to the mounting groove 253 being recessed on, on the roof of mounting groove 253, there is the installing hole 254 relative with crossbeam 11 is installed, quiet tool rest 25 can be fixed on installation crossbeam 11 by threaded fastener being passed to installing hole 254 and being threaded io installation crossbeam 11. Thus, easy for installation and connection reliability is high.

In an embodiment of the present utility model, switch matrix 21 is for insulating part and can adopt poured with epoxy resin to make. Thus, the hydrophobicity of switch matrix 21 is good, can not cause the danger that pernicious gas and liquid are revealed, thereby can not give environment, and in servicely not affected by surrounding environment, condensation and filth etc. With reference to Fig. 1-Fig. 3, switch matrix 21 itself can be cast with four the first insulating barriers 211, binding post mount pad 212, main shaft mount pad 213, form mount pad 214 and seal mounting grooves 253, and switch matrix 21 can with binding post 22, electrified sensor 24 and ground connection tool rest 27 module that pours into an integrated entity. Thus, the compact conformation of tri-station isolating switch 100, small and exquisite, reduce sealing part, insulating reliability and functional reliability are improved, and not only location and installation reliably of tri-station isolating switch 100, and in the time that tri-station isolating switch 100 moves, make reliable transmission, improve three-phase dynamic/static contact and contacted reliable uniformity.

As shown in Figure 1, switch motion mechanism comprises the three-phase isolation switch blade 231 being arranged side by side, four the first insulating barriers 211 of cast can be side by side and spaced apart setting, between every two adjacent the first insulating barriers 211, is provided with an isolating switch blade 231 being exposed to mutually in sealed air chamber 101. Thus, structure is compacter, and can effectively dwindle the distance between adjacent two the first insulating barriers 211, and each the first insulating barrier 211 distance relatively, thereby the first insulating barrier 211 insulating properties and the first insulating barrier 211 insulating properties are relatively each other improved.

Further, with reference to Fig. 1-Fig. 3, three binding post mount pads 212 are arranged side by side, and three-phase terminal 22 is arranged on respectively in three binding post mount pads 212, and every phase connection terminal 22 is all electrically connected with the isolating switch blade 231 of corresponding phase. for example, in the example of Fig. 1 and Fig. 2, binding post mount pad 212 can pour into towards the cone boss reducing gradually away from the direction cross section at switch matrix 21 centers, that is to say, along the direction away from sealed air chamber 101, the cross-sectional area of each binding post mount pad 212 reduces gradually, thereby binding post mount pad 212 is convenient to external European connection-peg 300, to ensure good insulated enclosure performance, three-phase terminal 22 is arranged on respectively in corresponding binding post mount pad 212 and is electrically connected with the isolating switch blade 231 of corresponding phase, to realize the conducting of electric current. thus, the line mode of tri-station isolating switch 100 is flexible, and isolation, ground protection port security is reliable.

Wherein, each binding post mount pad 212 all with switch matrix 21 one moulding by casting, every phase connection terminal 22 is all connected with 212 cast of corresponding binding post mount pad. Thus, the structure of tri-station isolating switch 100 is compacter, small and exquisite, functional reliability is higher. Here, be understandable that, the one side that is provided with binding post mount pad 212 of switch matrix 21 is arranged on housing 1 outside and is positioned at the cable vault of switch cubicle, thus, can convenient, flexiblely connect safely and reliably again line cable.

Particularly, the end of every phase connection terminal 22 is equipped with the moving knife seat 221 stretching in sealed air chamber 101, and one end of every isolated switch blade 231 is hinged with corresponding moving knife seat 221. With reference to Fig. 1, the moving knife seat 221 that stretches into one end in sealed air chamber 101 and can be configured to the isolating switch of corresponding phase of every phase connection terminal 22, one end of every isolated switch blade 231 is pivotably mounted on respectively on corresponding moving knife seat 221, and three-phase isolation switch blade 231 is hinged on three moving knife seats 221 correspondingly. Thus, be convenient to install isolating switch blade 231, make the structure of tri-station isolating switch 100 compacter.

Further, with reference to Fig. 3, on the surface of switch matrix 21, be formed with at least annular seal groove 215 around three binding post mount pads 212, that is to say, seal groove 215 can be cast on the side surface that watering of switch matrix 21 outpour binding post mount pad 212 and around three-phase terminal 22, for sealing joint strip is installed, such as sealing ring etc., thereby the sealing reliability of raising tri-station isolating switch 100. In addition, with reference to Fig. 1 and Fig. 3, on switch matrix 21, can pour into a mould three form mount pads 214, on three form mount pads 214, be formed with respectively an observation perforation running through, three observation perforation are relative with three-phase isolation switch blade 231, thereby user can observe to bore a hole by three and observe the operating state of three-phase isolation switch blade 231, for ensureing functional reliability and the security of isolating switch, the outer face of form mount pad 214 such as can be configured to flange face, for observation window, glass plate etc. are installed.

With reference to Fig. 1, switch assembly comprises and three-phase terminal 22 corresponding connected three-phase electrified sensor 24 respectively, that is to say, whether every phase electrified sensor 24 is connected with the binding post 22 of corresponding phase, charged thereby user can understand binding post 22 by electrified sensor 24. For example in the example depicted in fig. 1, every phase electrified sensor 24 can lay respectively at corresponding phase binding post 22 directly over, every phase electrified sensor 24 can connect with the binding post 22 of corresponding phase by the wire of welding on it, and also leaves the output termination 241 that passes switch matrix 21 in every phase electrified sensor 24. Preferably, three-phase electrified sensor 24 is all connected with 21 cast of switch matrix, in addition, for the ease of connecting band electric transducer 24, can go out electrified sensor mount pad 216 (with reference to Fig. 2) at the upper of switch matrix 21 own, so that output termination 241 passes from electrified sensor 24 mount pads 216. Thus, small-sized property, compact, reliability and few sealing of tri-station isolating switch 100 have further been improved.

See figures.1.and.2, switch operating mechanism comprises operation axis 234 and linked component, operation axis 234 is installed in rotation on switch matrix 21, linked component is three and corresponding with three-phase isolation switch blade 231 connected respectively, and each linked component is all connected to operation axis 234 and drives the isolating switch blade 231 of corresponding phase to move to be driven by operation axis 234. Wherein, each linked component includes interlock connecting lever 233 and interlock pull bar 232, one end of interlock connecting lever 233 is connected with operation axis 234, and the other end of one end of interlock pull bar 232 and interlock connecting lever 233 is hinged, and the other end of interlock pull bar 232 is hinged with the isolating switch blade 231 of corresponding phase. Thus, can realize neatly operation and the locking of three Switch of working positions of tri-station isolating switch 100.

Here, it should be noted that, isolating switch blade 231 shown in Fig. 1, isolating switch blade 231 ＇, isolating switch blade 231 " is three switching positions in certain isolated switch blade course of action, wherein, in the time that isolating switch blade moves to isolating switch blade 231 position, tri-station isolating switch 100 is in "on" position, in the time that isolating switch blade moves to isolating switch blade 231 ＇ position, tri-station isolating switch 100 is in ground state, when isolating switch blade moves to isolating switch blade 231 " when the position, tri-station isolating switch 100 is in gate-dividing state.

Preferably, on the periphery wall of interlock pull bar 232, there is anti-tracking protruding stupefied 2321, for example in the example depicted in fig. 1, on interlock pull bar 232, can be formed with multiple convex annular along its axially spaced distribution stupefied 2321, thereby play the effect of anti-tracking, to improve the functional reliability of tri-station isolating switch 100.

Preferably, switch matrix 21 comprises the main shaft mount pad 213 for fitting operation main shaft 234, and main shaft mount pad 213 is connected with 21 cast of switch matrix. Thus, small-sized property, compact, reliability and few sealing of tri-station isolating switch 100 have further been improved. For example, in the example shown in Fig. 1 and Fig. 2, main shaft mount pad 213 one end can pour into circular hole in order to bearing to be installed, the pre-buried inserts of the other end is for mounting flange end cap, operation axis 234 is pivotably mounted in main shaft mount pad 213, on operation axis 234, there are three interlock connecting levers 233, each interlock connecting lever 233 connects respectively one end of corresponding interlock pull bar 232, and the other end of each interlock pull bar 232 is hinged with the transmission pin-and-hole of the isolating switch blade 231 of corresponding phase respectively.

Thereby operation axis 234 can drive three-phase isolation switch blade 231 to switch between closing position, sub-gate position and ground connection position by three-phase interlock connecting lever 233 and three-phase interlock pull bar 232, to realize combined floodgate, the separating brake of tri-station isolating switch 100, three stations actions of ground connection. Thus, by the cooperation of switch motion mechanism and switch operating mechanism, can realize neatly operation and the locking of three Switch of working positions of tri-station isolating switch 100.

The mode of connection of the tri-station isolating switch 100 of the utility model embodiment is flexible, makes tri-station isolating switch 100 can be used as service entrance switch, also can be used as outlet switch. If employing long cable section of ingoing line, AC power A, B, the European connection-peg 300 of C threephase cable are plugged on the sub-mount pad 212 of three-phase terminal to connect three-phase terminal 22, thereby source current passes to three-phase isolation switch blade 231 by three-phase terminal 22, if now three-phase isolation switch blade 231 is in the "on" position closely engaging with three-phase static contact 26, three-phase isolation switch blade 231 will spread out of electric current three-phase static contact 26, and by static contact 26, electric current is spread out of.

If employing cable outlet, current flowing order is contrary with above-mentioned inlet wire, that is to say, if three-phase isolation switch blade 231 is in the "on" position closely engaging with three-phase static contact 26, first electric current can spread out of on three-phase isolation switch blade 231 by three-phase static contact 26, output on three-phase terminal 22 by three-phase isolation switch blade 231 again, then output on AC power A, B, the European connection-peg 300 of C threephase cable, so that three-phase current is exported by three-phase terminal 22.

Tri-station isolating switch 100 also comprises the ground connection tool rest 27 for grounding contact 28 is installed. For example, in the example shown in Fig. 1 and Fig. 2, ground connection tool rest 27 is that three and the top that can be located at side by side switch matrix 21 connect three-phase ground contact 28 for correspondence, one end of every phase grounding contact 28 is all for connecting the outer earthing bar that draws, thereby in the time that every isolated switch blade 231 engages with the grounding contact 28 of corresponding phase, tri-station isolating switch 100 can be grounded action. Preferably, ground connection tool rest 27 is arranged on switch matrix 21 and with 21 cast of switch matrix and is connected. Thus, small-sized property, compact, reliability and few sealing of tri-station isolating switch 100 have further been improved.

Particularly, drive operation axis 234 to rotate by the operating mechanism of console switch, so that three-phase isolation switch blade 231 joint corresponding to three-phase ground contact 28, particularly, the ground spring having in operating mechanism is released can, drive fast operation axis 234 by bindiny mechanism's (example is external connecting lever 200 as shown in Figure 2), operation axis 234 passes through contact pressure spring close contact by linked component driving isolation switch blade 231 and grounding contact 28, thereby can make tri-station isolating switch 100 be grounded action, and then make to overhaul in product, the miniaturization tri-station isolating switch 100 of the states such as maintenance can ensure maintainer's safety.

The key equipments for the miniaturization switch cubicle particular design of environmental protection gas according to the tri-station isolating switch 100 of the utility model embodiment, in the process of concrete application, housing 1 that can be using the inside cabinet of switch cubicle as tri-station isolating switch 100, tri-station isolating switch 100 adopts poured with epoxy resin to help insulator arrangement, because the hydrophobicity of epoxy resin is good, do not have the danger that pernicious gas and liquid are revealed, can not give environment, and tri-station isolating switch 100 surrounding environment that is not subject in service, the impacts such as condensation and filth, there is very strong technical and manufacturability. in addition, the compact conformation of tri-station isolating switch 100, volume little, can expand, round-the-clock, meet environmental requirement, easy for installation, operation expense is low, be not subject to running environment to affect, can obviously reduce electric power facility investment and defeated, feeder circuit loss. thereby, being provided with the switch cubicle of this tri-station isolating switch 100, the advantage such as have miniaturized vacuum environmental protection breaker (or on-load switch), be not affected by the external environment, is suitable for the power reguirements of city net, rural power grids etc.

In description of the present utility model, it will be appreciated that, term " on ", orientation or the position relationship of the instruction such as D score, " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic. Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ". In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.

In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description. In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example. And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination. In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this description or example and different embodiment or example.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims (21)

1. a tri-station isolating switch, is characterized in that, comprising:

Housing, limits sealed air chamber in described housing; With

Switch main body, described Switch main body comprises grounding contact, quiet tool rest, static contact, switch matrix and switch assembly, wherein, described grounding contact is arranged in described sealed air chamber, described quiet tool rest is arranged on described housing, described static contact is arranged on described quiet tool rest and is positioned at described sealed air chamber, described switch matrix is arranged on described housing and not and contacts with described quiet tool rest, described switch assembly comprises the switch motion mechanism and the switch operating mechanism that are arranged on described switch matrix, described switch motion mechanism is located at and in described sealed air chamber and by described switch operating mechanism, is controlled at the closing position engaging with described static contact, the ground connection position engaging with described grounding contact, and switch between the sub-gate position between described closing position and described ground connection position.

2. tri-station isolating switch according to claim 1, it is characterized in that, described switch motion mechanism comprises the three-phase isolation switch blade being arranged side by side, described switch matrix comprises four the first insulating barriers that are arranged side by side, and between every two adjacent described the first insulating barriers, is provided with a mutually described isolating switch blade.

3. tri-station isolating switch according to claim 2, is characterized in that, described four the first insulating barriers and described switch matrix one moulding by casting.

4. tri-station isolating switch according to claim 2, it is characterized in that, described switch matrix comprises three binding post mount pads that are arranged side by side, described switch assembly comprises and is arranged on respectively three three-phase terminal in described binding post mount pad, every mutually described binding post all with the described isolating switch blade electrical connection of corresponding phase.

5. tri-station isolating switch according to claim 4, is characterized in that, the end of every mutually described binding post is equipped with the moving knife seat stretching in described sealed air chamber, and one end of every mutually described isolating switch blade is hinged with corresponding described moving knife seat.

6. tri-station isolating switch according to claim 4, is characterized in that, along the direction away from described sealed air chamber, the cross-sectional area of each described binding post mount pad all reduces gradually.

7. tri-station isolating switch according to claim 4, is characterized in that, each described binding post mount pad all with described switch matrix one moulding by casting, every mutually described binding post is all connected with corresponding described binding post mount pad cast.

8. tri-station isolating switch according to claim 4, is characterized in that, is formed with at least annular seal groove around three described binding post mount pads on the surface of described switch matrix.

9. tri-station isolating switch according to claim 4, is characterized in that, described switch assembly comprises and the corresponding connected three-phase electrified sensor respectively of binding post described in three-phase.

10. tri-station isolating switch according to claim 9, is characterized in that, every mutually described electrified sensor is all connected with described switch matrix cast.

11. according to the tri-station isolating switch described in any one in claim 2-10, it is characterized in that, described switch operating mechanism comprises:

Operation axis, described operation axis is installed in rotation on described switch matrix; With

Linked component, described linked component is three and corresponding with isolating switch blade described in three-phase connected respectively, each described linked component includes interlock connecting lever and interlock pull bar, one end of described interlock connecting lever is connected with described main shaft, the other end of one end of described interlock pull bar and described interlock connecting lever is hinged, and the other end of described interlock pull bar is hinged with the described isolating switch blade of corresponding phase.

12. tri-station isolating switch according to claim 11, is characterized in that, described switch matrix comprises the main shaft mount pad for described operation axis is installed, and described main shaft mount pad is connected with described switch matrix cast.

13. tri-station isolating switch according to claim 11, is characterized in that, have anti-tracking protruding stupefied on the periphery wall of described interlock pull bar.

14. tri-station isolating switch according to claim 2, is characterized in that, described static contact is three-phase, and described quiet tool rest comprises four the second insulating barriers that are arranged side by side, and between every two adjacent described the second insulating barriers, are provided with a mutually described static contact.

15. tri-station isolating switch according to claim 14, it is characterized in that, three described the second insulating barriers in four described the second insulating barriers are embedded with connector, and static contact is fixed on corresponding described the second insulating barrier by the described connector of correspondence respectively described in three-phase.

16. tri-station isolating switch according to claim 1, is characterized in that, further comprise: for the ground connection tool rest of described grounding contact is installed, described ground connection tool rest is arranged on described switch matrix and with described switch matrix cast and is connected.

17. tri-station isolating switch according to claim 1, is characterized in that, described quiet tool rest is provided with mounting groove, are provided with the installation crossbeam being engaged in described mounting groove in described housing, and described quiet tool rest is arranged on described installation crossbeam.

18. tri-station isolating switch according to claim 1, is characterized in that, described housing is metal Stainless Steel Shell.

19. tri-station isolating switch according to claim 1, is characterized in that, described switch matrix is poured with epoxy resin profiled member.

20. tri-station isolating switch according to claim 1, is characterized in that, described quiet tool rest is poured with epoxy resin profiled member.

21. 1 kinds of switch cubicles, is characterized in that, comprise according to the tri-station isolating switch described in any one in claim 1-20.