A kind of insulation assembly for solid insulated switchgearTechnical field
The utility model relates to field of circuit breakers, in particular to a kind of insulation assembly for solid insulated switchgear.
Background technique
Solid insulating fully enclosed looped network unit (abbreviation ring-main unit) is a kind of hermetically sealed power supply unit, all electro-mechanical partsPart and switch are hermetically sealed in an epoxy resin mechanism case, are vacuum interrupter in cabinet.Entire switching device is not by outsideEnvironment influences, it is ensured that operational reliability and Personal Safety, and realize non-maintaining.The indoor and outdoor type of ring-main unit point,Outdoor type is that indoor type ring-main unit is enclosed in the multichannel ring network power supplying units constituted in a metal shell again.
Ring-main unit is suitable for the three-phase alternating current distribution system of 12kV, 50Hz, powers for ring network power supply or terminal.Looped networkThe mountable distribution system in industrial and mining enterprises, residential quarters, school, park etc. of unit, can also be packed into close-coupled type box type transformationControl and protection in standing, for distribution transformer.So power distribution automation can be achieved in indoor, outdoor type ring-main unit.FamilyThe capital equipment of external form ring-main unit is solid insulation ring main unit, and the main component of solid insulation ring main unit machine core is solid insulationBreaker and on-load switch, and the main component of solid insulated switchgear is insulator, the side of insulator is provided with bus.
Breaker in the prior art usually only only relies on list during carrying out high voltage power transmission comprising an insulatorThe single insulating body reliability of one breaker is poor, once breaking down, will cause huge hidden danger to the safety of transmission of electricity.
Utility model content
The purpose of the utility model is to provide a kind of insulation assemblies for solid insulated switchgear, it is advantageous that, lead toBeing used cooperatively for multiple insulating units and multiple insulators is crossed, the reliability of insulated circuit breakers is improved.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of insulation assembly for solid insulated switchgear, including the insulating unit that several groups are used in combination, every group of instituteStating insulating unit includes at least two insulators being applied in combination, and the side of each insulator is provided with bus base, sameThe bus base of each insulator in the insulating unit mutually staggers setting in the vertical direction, passes through connection between each insulating unitStructure is coupled, and connection structure includes the connection component of the bus base of several coupling same level height, the connection componentQuantity it is consistent with the insulator quantity in each insulating unit.
By using above-mentioned technical proposal, breaker has multiple insulating units, and each insulating unit is with multiple exhaustedEdge body is provided with bus base on insulator, and the bus base of same level height is connected by connection component.When a certain insulatorOr its internal disconnect switch, when breaking down, insulator coupled with it remains to continue to play a role, to ensure that open circuitThe normal work of device improves the reliability of breaker.Meanwhile multiple insulators are attached by same connecting plate, are reducedWire rod dosage when multiple insulators are used in conjunction with, reduces the use cost of insulated circuit breakers.
Preferably, the bus base offers bus duct, the bottom of the bus duct far from the side of the insulatorThe mounting hole for installing bus is offered, the connection component is embedded in the bus duct.
By using above-mentioned technical proposal, by opening up for mounting hole, provide installation space for bus, convenient for bus withThe coupling of connection structure.
Preferably, offering mounting groove at left and right sides of the bus duct, the connection component is described including being mounted onCoupling plate in mounting groove, bus are mutually coupled with the coupling plate.
The bus duct of same level height is connected by the connection of coupling plate and bus by using above-mentioned technical proposalIt picks up and.By opening up for mounting groove, coupling plate is embedded in mounting groove, improves the stability of coupling plate installation.
Preferably, offering connecting hole corresponding with the mounting hole, the mounting hole and institute in the coupling plateIt states and connecting tube is installed in connecting hole, bus is mounted in the connecting tube.
By using above-mentioned technical proposal, it is mounted in connecting hole and mounting hole by connecting tube, coupling plate is mounted onIt is positioned in bus duct, further improves the stability of coupling plate installation.
Preferably, protection board is installed between the bus base of adjacent same level height, the two of the protection boardEnd offers the accommodation groove through entire protection board, and the coupling plate is installed in the accommodation groove.
By using above-mentioned technical proposal, by opening up for protection board and accommodation groove, coupling plate is mounted in accommodation groove, is protectedBackplate protects coupling plate, prevents coupling plate from directly contacting with the external world, it is therefore prevented that the impurity such as moisture, dust are to coupling plateIt corrodes, extends the service life of coupling plate.
Preferably, the protection board is made of insulating material.
It, will since protection board is made of insulating material, thus by the setting of protection board by using above-mentioned technical proposalCoupling plate is completely cut off, and is prevented personnel's accidentally touching protection board, is caused personnel by electric shock fortuitous casualty.
Preferably, the both ends of the protection board offer limiting slot, the side wall of the mounting groove is embedded in the limitIn slot.
It by using above-mentioned technical proposal, is embedded in limiting slot by mounting groove, progress is moved left and right to protection boardLimit, to improve the stability that protection board is mounted in limiting slot, further improves what protection board protected coupling plateEffect.
Preferably, the protection board at the limiting slot extends to the direction far from the installation trench bottom, one is formedMounting blocks, the outer surface of the mounting blocks are flushed with the side wall of the mounting groove.
Flush the edge of bus duct by the setting of mounting blocks by using above-mentioned technical proposal, convenient for bus ductIt is protected.
Preferably, being equipped with the fixed lid for covering the bus duct on the bus base.
Bus duct is covered, by the setting of fixed lid to the mother in bus duct by using above-mentioned technical proposalLine and exposed coupling plate are protected, meanwhile, protection board is compressed, prevents protection board from deviating from out of bus duct, the company of improvingConnect reliability of structure.
Preferably, being equipped with protection block in the most marginal mounting groove in left and right.
Mounting groove is blocked and is sealed by the setting of protection block by using above-mentioned technical proposal, to prevent outerThe moisture dust on boundary enters in bus duct from the opening of mounting groove, influences the normal work of breaker.
In conclusion the utility model has the following beneficial effects:
Breaker has multiple insulating units, and each insulating unit has multiple insulators, is provided with mother on insulatorThe bus base of line seat, same level height is connected by connection component.When a certain insulator or its internal disconnect switch hairWhen raw failure, insulator coupled with it remains to continue to play a role, to ensure that the normal work of breaker, raising is resolvedThe reliability of road device.Meanwhile multiple insulators are attached by same connecting plate, when reducing multiple insulators and being used in conjunction withWire rod dosage, reduce the use cost of insulated circuit breakers.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of insulation assembly for solid insulated switchgear；
Fig. 2 is the structural schematic diagram of insulating unit；
Fig. 3 is the scheme of installation of connection component；
Fig. 4 is the enlarged drawing in Fig. 3 at A.
In figure: 1, insulating unit；2, insulator；3, bus base；31, bus duct；32, mounting hole；33, mounting groove；4, evenBinding structure；41, connection component；5, protection board；51, accommodation groove；52, limiting slot；53, mounting blocks；6, coupling plate；61, connecting hole；7, connecting tube；8, protection block；9, fixed lid.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
With reference to attached drawing 1 and attached drawing 2, a kind of insulation assembly for solid insulated switchgear, including several groups are used in combinationInsulating unit 1, every group of insulating unit 1 includes at least two insulators 2 being applied in combination.In the present embodiment, insulating unit 1And the quantity of the insulator 2 of every group of insulating unit 1 is three.Particular number can be adjusted according to actual needs.
The side of each insulator 2 is provided with bus base 3, and the bus base 3 of each insulator 2 in same insulating unit 1 existsSetting is mutually staggered on vertical direction.In the present embodiment, in each insulating unit 1 bus base 3 of each insulator 2 from left to right according toIt is secondary to be set to top, middle part, lower part.
It is coupled between each insulating unit 1 by connection structure 4, connection structure 4 includes several coupling same level heightBus base 3 connection component 41, the quantity of connection component 41 is consistent with the quantity of each 1 interior insulation body 2 of insulating unit, this realityThe quantity for applying connection component 41 in example is three.
With reference to attached drawing 3 and attached drawing 4, connection component 41 includes protection board 5, the coupling plate 6 being mounted in protection board 5.ProtectionPlate 5 is installed between the bus base 3 of adjacent same level height, and the both ends of protection board 5 offer the appearance through entire protection board 5Slot 51 is set, coupling plate 6 is embedded in accommodation groove 51.
Bus base 3 offers the bus duct 31 of rectangle far from the side of insulator 2, and the bottom center of bus duct 31 opens upFor installing the mounting hole 32 of bus, the left and right sides of bus duct 31 offers the mounting groove 33 of rectangle, and connection component 41 is embeddedIn bus duct 31.Position corresponding with mounting hole 32 offers connecting hole 61 in coupling plate 6, in connecting hole 61 and mounting hole 32Connecting tube 7 is installed, connecting tube 7 is made of conductive metallic material, bus by with 7 phase of connecting tube couple, then pass through connecting tube 7It is coupled with 6 phase of coupling plate.
Protection board 5 is whole to be made of insulating material, and is made in the present embodiment of epoxy resin, in actual production processOther insulating materials can be used.
The both ends of protection board 5 offer the limiting slot 52 matched with the side wall of mounting groove 33, and the side wall of mounting groove 33 is embeddingIt is located in limiting slot 52.Protection board 5 at limiting slot 52 extends to the direction far from 33 bottom of mounting groove, forms a mounting blocks53.When protection board 5 is mounted in mounting groove 33, mounting groove 33 is filled by mounting blocks 53, makes the outside table of mounting blocks 53Face is flushed with the side wall of mounting groove 33.
Protection block 8 is installed in the most marginal mounting groove 33 in left and right, protects the structure one of fast structure and 5 both ends of protection boardIt causes, is provided with the limiting slot 52 matched with the side wall of mounting groove 33, protection is embedded fastly in mounting groove 33.
Fixation lid 9 for covering bus duct 31 is installed, fixed lid 9 is fastened on bus base 3, will be female on bus base 3Wire casing 31 is sealed, and is prevented extraneous moisture, dust from entering in bus duct 31, is caused to corrode to bus and coupling plate 6.
When in use, breaker has multiple insulating units 1, and each insulating unit 1 has multiple insulators 2, insulationBus base 3 is provided on body 2, the bus base 3 of same level height is connected by connection component 41.When a certain insulator 2 orWhen its internal disconnect switch breaks down, insulator 2 coupled with it remains to continue to play a role, to ensure that breakerNormal work, improve the reliability of breaker.Meanwhile multiple insulators 2 are attached by same connecting plate, are reducedWire rod dosage when multiple insulators 2 are used in conjunction with, reduces the use cost of insulated circuit breakers.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, abilityField technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, butAs long as all by the protection of Patent Law in the scope of the claims of the utility model.