Bus groove transmission device and multi-layer bus groove electric connection method
Technical field
The invention relates to a kind of power supply unit, particularly about a kind of bus groove transmission device that is used to transmit electric power.
Background technology
Develop rapidly along with the city, skyscraper is more and more, the building power load sharply increases thereupon, and original electric wire is because its capacity is little, branch is inconvenient, be not easy to reason such as boundling management, and is progressively big by capacity, branch convenient, boundling manages easily that bus duct replaces.
But bus duct also exists some shortcomings, such as, if insulation of the jockey between the bus duct and sealing effectiveness are bad, will bring the electric leakage accident, cause casualties or breaking out of fire.And the heat dissipation problem of bus duct also is a hang-up that all the time perplexs the bus duct research staff, in case the high temperature that the connection busbar in the bus duct produces can not in time leave, just is easy to take place potential safety hazard.Simultaneously, for the temperature in the bus duct is measured and monitored, must lay special detection and control circuitry in addition, this should increase extra cost can make whole circuit seem more messy again.
Aspect connection, a kind of bus duct plug-in type active joint that is disclosed for No. 95207020 as Chinese patent, it is by side plate, insulating barrier, electric-conductor, insulating case, the high strength insulated bolt, disk spring, pressing plate, clamp nut, connecting screw rod, insulating sleeve, dog screw and handle are formed, wherein, biside plate central authorities have the high strength insulated bolt, have row's electric-conductor on the bolt, be separated by by insulating case between each electric-conductor, each electric-conductor central authorities also has a dividing plate, the edge of biside plate is linked to each other by dog screw by connecting screw rod, have insulating sleeve and handle on the connecting screw rod, the electric-conductor of bus duct and bus adopt two-sided overlap joint.But this joint had not only carried out being electrically connected but also having carried out mechanical connection, can not be applied to only need to carry out the occasion of mechanical connection, so its adaptability is not strong, and this joint can not effectively be connected and sealed two sections bus ducts that link to each other.
Aspect heat radiation, a kind of heat radiating type bus duct that is disclosed for No. 01258395 as Chinese patent, wherein, insulate by dielectric film between the copper bar, the two sides of copper bar are by insulated support and side plate insulation, dielectric film is equipped with shell outward, and shell is fixed by screw and side plate, the heat sink strip of oriented outer lug on shell and/or the side plate.But the heat sink strip of this bus duct is complex-shaped, manufactures cumbersomely, and this heat sink strip structure is set on the shell is unfavorable for interconnecting between the bus duct.
Aspect detection and control circuitry, the bus duct of a kind of closed band control warning wire casing that is disclosed for No. 99236769 as Chinese patent, comprise cover plate, cross-over block, conducting copper, bolt, liner plate, wherein: also comprise side plate, side plate is " Ω " type, side plate connects with cover plate for sealing, side plate and liner plate form one can the installation and control line wire casing.But, this bus duct structure need be provided with the wire casing that special side plate forms the installing control line, increased cost, and, the side plate that this patent adopted must just be fixed together with bus duct when assembling, therefore, after being attached on the building, arranges in wire casing again bus duct that control line is just relatively more difficult.
And, electric connection mode between two adjacent multi-layer bus grooves of the prior art is that each electric conductor with every group of electric conductor of respective layer carries out correspondence respectively and is electrically connected, but, such connected mode is linked to be the electric conductor that is used to carry in-phase current in each group on different aspects transmission line is independent separately, when the resistance of these transmission lines there are differences, will cause the electric current on the less transmission line of in transmission of electricity process resistance excessive, thereby be easy to make less that layer electric conductor of resistance to burn out or must quit work automatically because temperature is too high.Therefore, this connected mode of the prior art makes the maximum current of whole piece bus duct generally can only be about 2000 amperes, and along with the continuous increase of need for electricity, the bearing capacity of this bus duct can not satisfy the demands.
Therefore, provide a kind of simple in structure, attachment security reliable, can conveniently lay and reserve circuit, the bus groove transmission device that can carry bigger electric current and electrically connected method and become the problem that industry need solve.
Summary of the invention
The technical problem that the present invention will solve provides a kind of multi-layer bus groove electric connection method that makes the bigger electric current of bus duct carrying.
Another technical problem that the present invention will solve provide a kind of carry bigger electric current, can conveniently lay and reserve circuit, easy to connect and reliable sealing bus groove transmission device.
On the one hand, the invention provides a kind of multi-layer bus groove electric connection method, be used between the first adjacent multi-layer bus groove and second multi-layer bus groove, setting up and be electrically connected, first multi-layer bus groove and second multi-layer bus groove all comprise the ground floor electric conductor group and the second layer electric conductor group of mutually insulated at least, ground floor electric conductor group and second layer electric conductor group comprise the A phase electric conductor of mutually insulated respectively at least, B phase electric conductor and C phase electric conductor, this method comprises: with all A of first multi-layer bus groove and second multi-layer bus groove mutually electric conductor set up electrical connection together, with all B of first multi-layer bus groove and second multi-layer bus groove mutually electric conductor set up electrical connection together, with all C of first multi-layer bus groove and second multi-layer bus groove mutually electric conductor set up electrical connection together.
Particularly, by one or more conducting connecting parts with the abutting end of two multi-layer bus grooves be used to carry the whole corresponding electric conductor of in-phase current to set up electrical connection together.Preferably by one or a pair of connection busbar with the abutting end of two multi-layer bus grooves be used to carry the whole corresponding electric conductor of in-phase current to set up electrical connection simultaneously.
On the other hand, the invention provides a kind of bus groove transmission device, comprise at least two bus ducts, each bus duct comprises a pair of cover plate and at least two pairs of side plates, layering is equiped with two-layer at least electric conductor group in the space that a pair of cover plate and at least two pairs of side plates impale, every layer of electric conductor group comprises the electric conductor of at least three mutually insulateds, it is characterized in that bus groove transmission device comprises that all electric conductors that are used for the conveying in-phase current of each layer electric conductor group of two bus ducts set up the connection busbar of electrical connection simultaneously.
Wherein, each electric conductor be respectively equipped with connector portions, bus groove transmission device comprises more than two pairs or two pairs at the electrically connecting position of two bus ducts and connects busbar, one or one are with upper insulation plate and a plurality of insulating fixing piece, thereby two the correspondence of bus duct be used to carry the connector portions of totally four or four above electric conductors of in-phase current to be folded in simultaneously to form between the wherein a pair of connection busbar to be electrically connected, every pair of connection busbar is insulated the plate insulation isolates, and the connector portions insulation that insulating fixing piece will connect busbar and insulation board and electric conductor is fixed together.Every group of electric conductor group comprises four or four above electric conductors, wherein every group of electric conductor group correspondence is arranged between every pair of side plate, the electric conductor groups are to be stratified and set between a pair of cover plate more than two groups or two groups, two adjacent groups electric conductor group is isolated by a keyset, and at least one cover plate forms the observing and controlling wire casing in a side that deviates from the electric conductor group.As preferred mode, adopt three groups of electric conductor groups, promptly bus duct is three layers a bus duct, every group of electric conductor comprises five electric conductors, respectively A phase, B phase, C phase, zero line, the ground wire in the corresponding alternating current.With three A of three A phase electric conductors of three layers of electric conductor group of upper, middle and lower of a bus duct wherein and three layers of electric conductor group of upper, middle and lower of another bus duct mutually electric conductor the connector portions of totally six A phase electric conductors all be folded in to form simultaneously between a pair of connection busbar and be electrically connected, in like manner the connector portions with other each phases forms electrical connection respectively, and connects employing insulation board isolation between the busbar at every pair.
Preferably, a pair of cover plate is equipped with the observing and controlling wire casing, and the observing and controlling wire casing is equipped with the groove lid.Cover plate comprises a body, the observing and controlling wire casing is that the both sides of the edge by body extend upward pair of sidewalls and form, on the both sides cell wall of observing and controlling wire casing fin is set, groove covers corresponding fin a pair of card base is set, and groove covers by detachably being installed on the observing and controlling wire casing card base and cooperating of fin.
Particularly, further be provided with two or two above fin in a side that deviates from the electric conductor group at least one side plate.The fin that in the fin at least one pair of is adjacent extends the fixing flange relatively.Preferred scheme is that pair of side plates is equipped with at least two pairs of fin, and forms four fixing flanges.Fix flange and be formed on the whole piece fin, perhaps be formed on the two ends of fin, the middle part that the fixing flange is formed on fin is between the top, and the fixing flange is parallel to side plate.Bus duct further comprises the bus duct connector, the junction that is used for two bus ducts that correspondence is electrically connected seals and fixedlys connected, this bus duct connector comprises a pair of connection cover plate and a pair of connection side plate, a pair of connection cover plate and a pair of connection side plate correspondence are arranged in the cover plate and the side plate position of bus duct, and the sealing of the junction of two bus ducts impaled, the two ends that connect side plate cave inward respectively and form a buckle slot, install at least one card hook part in the buckle slot respectively, one end of card hook part is slidingly installed with in buckle slot, the other end of card hook part extends and forms one to the side plate of bus duct and is used for connecting the stiff end that side plate is fixed in the side plate of bus duct, and stiff end is fixed in by securing member on the fixing flange of side plate of bus duct.
Alternatively, can adopt a connection busbar between the electric conductor connector portions of the in-phase current of two bus ducts, to set up electrical connection.
Selectively, connecting cover plate also can be to be directly fixed on two bus ducts.
Bus duct of the present invention can be concentration bus duct, air type bus duct, high-performance bus duct, fire resistant busbar, water proof type bus duct, air supplementary insulation type bus duct or high pressure universal enclosed bus groove.
The invention has the beneficial effects as follows: being used in the electric conductor group more than two groups or two groups of a bus duct carries the connector portions of two or more electric conductors of in-phase current to carry the connector portions of two or more electric conductors of in-phase current to set up electrical connection simultaneously by a pair of connection busbar with corresponding being used to of electric conductor group more than two groups or two groups of another bus duct, make bus groove transmission device of the present invention when transmission of electricity, the electric current of homophase can carry each electric conductor circuit of this phase current to flow in all being used for relatively uniformly, effectively avoided the electric current on a certain electric conductor circuit excessive, thereby can guarantee the safety and stability of work, and make the maximum current that bus groove transmission device can carry bring up to 6000 amperes; The observing and controlling wire casing structure on the cover board is set and is equipped with dismountable groove lid, can lay detection and control circuitry or other reservation circuits easily, lay detection and control circuitry and can in the installing bus duct, carry out also can carrying out afterwards easily; This observing and controlling wire casing structure of the present invention is simple, and is one-body molded with cover plate, can reduce manufacturing cost; When adopting fin to effectively reduce the bus duct heat radiation, also on fin, be provided for the fixing flanged structure of fixedly connected side plate, realized a structure multiple use; Bus duct connector and bus duct structure are mutual corresponding fully with the sealing of the bus duct place of mutually combining, and the bus duct connector is member independently, go for various types of bus ducts; Adopt card hook part slidably to be located in the buckle slot, both simplified the installation process of bus duct connector, help regulating easily the position of bus duct connector again according to the needs of assembling.
Below in conjunction with drawings and Examples, further specify the present invention, but the present invention is not limited to these embodiment, any on essence spirit of the present invention improvement or substitute, still belong to scope required for protection in claims of the present invention.
Description of drawings
Fig. 1 is the schematic perspective view of individual layer bus duct of the present invention.
Fig. 2 is the partial enlarged drawing of individual layer bus duct of the present invention.
Fig. 3 be individual layer bus duct of the present invention cross-sectional view.
Fig. 4 is the schematic diagram of double-deck bus duct of the present invention.
Fig. 5 is the schematic diagram of three layers of bus duct of the present invention.
Fig. 6 is the perspective exploded view of individual layer bus groove transmission device user mode of the present invention.
Fig. 7 is the perspective exploded view of three layers of bus groove transmission device user mode of the present invention.
Fig. 8 is the schematic diagram after connection busbar and insulation board and the connector portions secure bond.
Embodiment
Embodiment 1
Please refer to Fig. 1 to Fig. 3, bus groove transmission device of the present invention, comprise a plurality of concentration bus ducts in the present embodiment, here be that example is introduced with individual layer bus duct simple in structure earlier, wherein bus duct is used to install the electric conductor 10 of one group of mutually insulated, such as conducting copper, this group electric conductor 10 comprises four conducting coppers in the present embodiment.This bus duct comprises a pair of cover plate 20 and pair of side plates 30, and electric conductor group 10 is installed in the space that a pair of cover plate 20 and pair of side plates 30 impale.
A pair of cover plate 20 is the shape of symmetry, here be introduced with one of them, cover plate 20 is roughly the U type, comprise a body 22, thereby extend upward pair of sidewalls 24 by the both sides of the edge of body 22 and form an observing and controlling wire casing 26, be used for laying therein detection and control circuitry, such as the bus duct temperature sensor scheme, on the two side 24 of observing and controlling wire casing 26 fin 244 is set, observing and controlling wire casing 26 adopts 28 sealings of groove lid, groove covers 28 corresponding fins 244 a pair of card base 284 is set, and groove lid 28 is by detachably being installed on the observing and controlling wire casing 26 card base 284 and cooperating of fin 244.Wherein, body 22 is offered connecting hole 223 and is used for carrying out fixed combination with side plate 30 in the bottom land position of observing and controlling wire casing 26.
Pair of side plates 30 is the shape of symmetry, here be introduced with one of them, side plate 30 is roughly the U type, the edge of side plate 30 extends a pair of stator 32 to the direction that deviates from electric conductor group 10, fixing hole 323 is set on the stator 32, securing member (figure does not show) such as bolt, passes connecting hole 223 and with fixing hole 323 cover plate 20 and side plate 30 is tightened together.Wherein, side plate 30 is provided with six fin 33, the relative respectively fixing flange 333 that extends of fin 33 that the top is adjacent with two couple of below deviating from the side surface of electric conductor group 10 to extend.
Please refer to Fig. 6, when reality is used, a plurality of bus ducts need be coupled together from beginning to end and form a transmission line, leak electricity for fear of the joint between adjacent two bus ducts, also need to adopt the bus duct connector, be used for junction with adjacent two bus ducts and seal and fixedly connected, this bus duct connector comprises a pair of connection cover plate 40, a pair of connection side plate 50, eight card hook parts 60, eight fixed code seats 70 and four sealing blocks 80.
A pair of connection side plate 50 is the shape of symmetry, here be introduced with one of them, connect side plate 50 and comprise a body 52, edge, the front and back symmetry of body 52 is extended a pair of cooperation ancient piece of jade, round, flat and with a hole in its centre 56 that is sealed and matched with side plate 30 of being used for, cooperate the end of an ancient piece of jade, round, flat and with a hole in its centre 56 to be bent to form a bearing 566 respectively, on the side of bearing 566 contiguous bus ducts, be provided with sealing strip 90.Rear and front end at side plate 30 is not provided with fin 33, reserves smooth surface so that the bearing 566 of connection side plate and the surface of side plate 30 are sealed and matched.The last lower limb symmetry of body 52 is extended and a pair ofly is used for and is connected the connecting wall 58 that cover plate 40 is tightly connected, and wherein, the cooperation ancient piece of jade, round, flat and with a hole in its centre 56 at two ends extends to the outer surface of the side plate 30 of adjacent two bus ducts respectively.
The rear and front end that connects the body 52 of side plate 50 caves inward respectively and forms a buckle slot 525, buckle slot 525 comprises groove chamber, notch and button limit 5255, install two card hook parts 60 in each buckle slot 525 respectively, one end of card hook part 60 is provided with a hook portion 62, and card hook part 60 is hooked on the button limit 5255 of buckle slot 525 and can slides along button limit 5255 by its hook portion 62.The middle part of card hook part 60 is bent into L shaped shape, the part before the bending smooth the surface of body 52, the part after the bending smooth cooperate the surface of an ancient piece of jade, round, flat and with a hole in its centre 56.The other end of card hook part 60 extends and forms a stiff end 66 that is provided with connecting hole to side plate 30 directions of bus duct.
Fixed code seat 70 is a box-shaped, it is provided with fixing hole, and fixed code seat 70 is installed in the space between the fin 33, and by fixing flange 333 blocks of fin 33, it can not dropped out in the space between the fin 33, and can slide along the space between the fin 33.Securing member passes the connecting hole of stiff end 66 and the fixing hole of fixed code seat 70, and card hook part 60 is fixedly attached on the fixed code seat 70, is fixed on the side plate 30 thereby will connect side plate 50.Because fixed code seat 70 can slide along the space between the fin 33, and card hook part 60 can be adjusted according to the assembling needs so connect the fixed position of side plate 30 easily along 5255 slips of button limit.
The middle part that connects cover plate 40 forms a cell body 44, the edge that connects cover plate 40 forms fixed edge 46, cell body 44 is used for the sidewall 24 of the cover plate 20 of ccontaining bus duct, therefore the groove insied width of cell body 44 approximates the distance between the outer wall of sidewall 24, so that make the sealing that connects between cover plate 40 and the cover plate 20.Connecting cover plate 40 is fixedly attached on the connecting wall 58 that connects side plate 50 by its fixed edge 46.And fixed edge 46 is provided with sealing strip 90, to realize connecting cover plate 40 and the sealing that is connected between the side plate 50.
Sealing block 80 is individually fixed in the cover plate 20 observing and controlling wire casings 26 of described bus duct, the size of sealing block 80 is consistent with the shape of observing and controlling wire casing 26, and sealing block 80 is provided with ladder connecting hole 88, when securing member penetrated this ladder connecting hole 88, the head captured of securing member was in this ladder connecting hole 88.In the present embodiment, adopt same securing member that sealing block 80, cover plate 20 and side plate 30 are tightened together.Therefore, when connection cover plate 40 covers cover plate 20, sealing block 80 will connect the cell body 44 of cover plate 40 and the observing and controlling wire casing 26 of cover plate 20 effectively seals.
Please refer to Fig. 4 and Fig. 5, the bus duct of bus groove transmission device of the present invention adopts sandwich construction.Wherein, electric conductor group 10 comprises two-layer or three layers, and side plate 30 comprises two pairs or three pairs, and wherein every layer of electric conductor group 10 correspondence are arranged between every pair of side plate 30.Adjacent two layers electric conductor group 10 is to be stratified and set between a pair of cover plate 20, and preferably the vertical center line direction layering along a pair of cover plate 20 is provided with.And adjacent two layers electric conductor group 10 is isolated by a keyset 100, and the stator 32 of adjacent two pairs of side plates 30 is fixed on the keyset 100 by securing member respectively.At this moment, the body 52 of the connection side plate 50 of bus duct jockey can be widened about 1 times or 2 times between two connecting walls 58, then the length of Dui Ying buckle slot 525 also prolongs about 1 times or 2 times, and card hook part 60 quantity that are provided with of sliding in the buckle slot 525 also increase about 1 times or 2 times, therefore, this bus duct jockey can be used for connecting this multi-layer bus groove.
Please refer to Fig. 7 and Fig. 8, as a kind of preferred implementation, bus duct adopts three-decker, just be divided into and be upper, middle and lower-ranking electric conductor group 10, wherein every layer of electric conductor group 10 comprises A phase electric conductor, B phase electric conductor, C phase electric conductor, zero line electric conductor, the ground wire electric conductor of five mutually insulateds.A phase, B phase, C phase, zero line, ground wire in the corresponding alternating current of difference.The two ends of each electric conductor are respectively equipped with and are used for the connector portions 15 that is electrically connected with other adjacent bus ducts, and bus groove transmission device is provided with five pairs at the electrically connecting position of two bus ducts and connects busbars 210, five insulation boards 220 and a plurality of insulating fixing piece 230.
What lay respectively at outermost that electric conductor conveying in the upper, middle and lower-ranking electric conductor group 10 of each bus duct is in-phase current, and in like manner, remaining electric conductor of each group also is to being applied to carry in-phase current according to sequence of positions.
In order to form a transmission line, need will be adjacent a plurality of multi-layer bus grooves head and the tail between correspondingly set up electrical connection, here so that wherein two the first adjacent multi-layer bus grooves and second multi-layer bus groove are that example is introduced.Thereby totally six electric conductors that the connector portions 15 of totally six electric conductors on two multi-layer bus groove correspondence positions is folded between the wherein a pair of connection busbar 210 simultaneously with two bus ducts are electrically connected simultaneously.Six connector portions 15 that wherein a pair of connection busbar 210 and folder thereof are established and adjacent another are to being insulated plate 220 isolation of insulating between other six connector portions 15 that are connected busbar 210 and folder thereof and establish.Wherein, insulating fixing piece 230 can adopt insulated bolt, connector portions 15, connect busbar 210 and insulation board 220 equal correspondences are offered through hole, insulated bolt passes connector portions 15 that these through holes will connect busbar 210 and insulation board 220 and electric conductor and insulate and be fixed together.
Certainly, the bus duct of bus groove transmission device of the present invention can adopt two-layer or more multi-layered structure, can comprise one or an above electric conductor in every layer of electric conductor group 10, and the quantity that then connects busbar 210 and insulation board 220 is also corresponding with it.
Embodiment 2
As another embodiment of the invention, bus groove transmission device of the present invention can adopt the bus duct of other types, such as air type bus duct, high-performance bus duct, fire resistant busbar, water proof type bus duct, air supplementary insulation type bus duct, high pressure universal enclosed bus groove etc.
Cover plate 20, side plate 30, connection cover plate 40, connection side plate 50 all can adopt asymmetric shape, such as, can only there be the side plate 30 of a side to be provided with fin 33 structures, can only there be the cover plate 20 of a side to be provided with observing and controlling wire casing 26 structures.
Can adopt at least one card hook part 60 is set in each buckle slot 525, card hook part 60 can adopt other modes to be directly fixed on the side plate 30, such as buckle, riveted joint, welding etc.
Groove lid 28 can pivot and be connected on the observing and controlling wire casing 26, perhaps slidably installs on observing and controlling wire casing 26.
The material of cover plate 20, side plate 30, connection cover plate 40, connection side plate 50, card hook part 60 etc. can be selected metal or metal alloy for use, such as aluminium alloy, also can select highstrenghtpiston or this area other materials commonly used for use.
Electric conductor group 10 can adopt more than three groups, and promptly bus duct can adopt more than three layers, the electric conductor in every group of electric conductor group also can for three, more than four or five.
Connecting busbar 210 can be replaced by other conducting connecting part, such as, earlier with two multi-layer bus grooves be used to carry all electric conductors of in-phase current to connect respectively with two conducting connecting parts, again two conducting connecting parts are electrically connected, wherein, conducting connecting part can be tabular, also can be other transformable shapes, also can adopt flexible conducting connecting part simultaneously.