CN202602447U - Connection device for electric machine, and electric machine - Google Patents

Abstract

The invention relates to the more compact design of the connection box of an electric machine. To this end, a connection device is proposed, having a first bus bar (1) for the direct connection of a first winding of the electric machine and a second bus bar (1) for the direct connection of a second winding of the electric machine. The two bus bars (1) are arranged close to each other such that an electrically isolating link (6) is necessarily removably fastened between the two bus bars (1) at a specified operating voltage in order to prevent a flashover and/or to maintain a specified creepage path. If necessary, the isolating link can be replaced by a switch connection. A very compact and variable connection device is thus available.

Description

Be used for an electromechanical termination and a motor machine

Technical field

The utility model relates to a kind of termination that is used for a motor machine (motor), comprises first bus and second bus that is used for directly being connected this electromechanical one second winding that is used for directly connecting this electromechanical one first winding.Such termination is set in place in the terminal box on the motor machine shell usually.That is the effect of said termination is that outer lead and motor machine winding are coupled together.

Background technology

Often there is the ordered motor machine of customer requirement to have at least two winding systems of electrical isolation each other.From electromechanical order before the terminal equipment of packing into, client decision not whether the winding that segments to some extent on electrical of this employings still adopt the winding of electrical parallel connection.For example, on decision is adopted electrically to some extent the client of the winding of segmentation be the possibility of each sub-winding of whole winding being controlled separately when hoping to be retained in the control change device.In the prior art, have only and two different terminal boxes are set and when ordering, just clearly specify its execution mode could realize this two kinds of schemes.

Dispose on the conventional electric machinery that connects bus in its stator terminal box, exist according to the difference of wire laying mode to connect the different possibilities that these connect buses, just be connected to the scheme of electrical network.For example, can let every winding leads all from terminal box, stretch out.As replacement scheme, also can be provided with one and for example have six Y-connections that connect bus (link U1, V1, W1, U3, V3, W3) or three connection buses (link U1+U3, V1+V3, W1+W3).Just must clearly stipulate corresponding execution mode during order.Scheme after confirming can't be changed.

Summary of the invention

In view of this, the purpose of the utility model provides a kind of compact as far as possible and can satisfy the terminal box of client's needs flexibly.

The utility model is a kind of electromechanical termination that is used in order to the solution of reaching above-mentioned purpose, and this termination comprises:

-one first bus that is used for directly connecting said electromechanical one first winding, and

-one second bus that is used for directly connecting said electromechanical one second winding, wherein,

-said two buses are disposed proximate each other; So that be necessary between said two buses (1), to install removably the isolator (6) of the insulating effect that electrifies, thus under a regulation operating voltage, prevent flashover and/or keep one the regulation creepage distance.

Can advantageously make the mutual as much as possible disposed proximate of said bus through the utility model, wherein, be provided with an isolator that plays insulating effect between the said bus, can change this isolator into an electric-conductor when needing.In this way, just can work independently by independent each winding that bus contacted or each winding system or through Y-connection work.Like this, the user just can decide its working method in its sole discretion again when being about to the actuating motor tool.

Said two buses preferably all have strip structure and mutual coaxial arrangement.Particularly a terminal box that is used for a plurality of winding systems, above-mentioned measure comes into plain view the structure of each link or each bus.

In the case, specific can said isolator being arranged on the end face of each bus in said two buses.At this moment, said isolator is between said two buses on the immediate each other position.

In addition, said isolator also can be directly with being threaded on each bus in said two buses.The user can realize voluntarily safely and reliably that such spiral connects.

According to a kind of special execution mode, said isolator has one and is looped around groove on this isolator to increase creepage distance.So just can be provided with said each bus more approaching.

According to another execution mode; Said isolator is installed between these two buses by a fixture; Said fixture is arranged on an intercell connector between said two buses with certain mode after removing said isolator, thereby makes these two bus conductions link to each other.Said fixture can be installed isolator can set up electric connection again, is multi-functional formula device therefore.

Said fixture is specific can to comprise two or four screws, also can comprise the screw more than four according to circumstances, can said isolator or said intercell connector directly be screwed on these two buses by these screws.This mode helps the user equally and easily and reliably carries out attended operation.

On said two buses, can advantageously a plurality of electric conductors be installed along a prescribed direction, wherein, said two buses are with respect to this prescribed direction tilt distribution.Thereby this being in tilted layout helps conserve space usually and makes on the whole eletric mechanical structure compact more.

According to a kind of specific embodiments, said motor machine can have a shell, and this shell has a terminal box, and above-mentioned termination is installed in this terminal box.Specific, said terminal box can be cube, and all lead to outside cable and all pass an independent side of this terminal box, and wherein, the angle between said bus and this side is between 20 ° to 70 °, particularly between 35 ° to 55 °.Adopt this arrangement can make terminal box very compact, can be parallel, do not have and connect inlet wire across, and need not each is connected busbar arrangement in a plurality of planes.

Description of drawings

Hereinafter will be elaborated to the utility model by accompanying drawing, wherein:

Fig. 1 comprises the termination of several isolators for the utility model;

Fig. 2 comprises the termination of several intercell connectors for the utility model;

Fig. 3 is the perspective view of an isolator;

Fig. 4 is the perspective view of an intercell connector; And

Fig. 5 is the perspective view of the utility model terminal box.

Embodiment

The embodiment that hereinafter will be introduced in detail is the preferred implementation of the utility model.

Termination shown in Figure 1 can be used for six winding systems.Each corresponding single bus (hereinafter referred " bus " 1) of each winding system.Be equipped with four winding inlet wires 2 on each bus, only show wherein two winding inlet wires on each bus 1 among the figure.These winding inlet wires 2 are screwed on the corresponding bus 1 by a cable lug respectively.In addition, the boring that these winding inlet wires 2 also all pass on the base plate 3 gets into motor machine inside, stretches to corresponding windings.Bus 1 is fixed on the base plate 3 by insulator 4.The top of each bus 1 respectively is connected with four cable lugs 5, and these cable lugs have been pointed out the direction from outside inlet wire.That is electromechanical user connects inlet wire with cable lug 5.

In layout shown in Figure 1, per two bus 1 coaxial continuous layouts that are strip.The end face of two buses arranging is in pairs by this way pressed close to each other, if this moment entirely without foundation gas insulate, just flashover might take place.For this reason, the utility model is provided with an isolator 6 between these two so contiguous buses 1.Isolator 6 makes its machinery link to each other when these two buses 1 are electrically insulated.Wherein, isolator 6 is screwed on the end that these two buses 1 are arranged opposite to each other through screw 7.In the present embodiment, two buses 1 that are provided with in pairs are coaxial arrangement, but they also can parallelly be staggeredly arranged or become a particular angular arrangement.At this moment, isolator 6 also need be done corresponding adjustment.But this isolator must be installed on each bus on that position near another bus in principle.

Termination shown in Figure 1 has six single buses 1, and promptly three buses are right.These three buses are to all adopting linear design, and just its bus 1 is coaxial orientation.Be equipped with an isolator 6 between two buses of every pair of bus.Each bus is to parallel.In addition, these buses are in tilted layout to the side with respect to rectangular base plate 3.Angle between this side of bus pair and base plate 3 is preferably about 45 °.Particularly between 35 ° to 55 °, but also can be between 20 ° to 70 °.Be in tilted layout through right this of bus and can make all inlet wires that lead to these buses insert and can not intersect from a side according to the indicated direction of cable lug 5.

Termination shown in Figure 2 is identical with Fig. 1.Unique difference is that isolator 6 has changed intercell connector 8 into.In the case, thereby each other in an electrically conductive linking to each other of two winding systems on two buses 1 constitute a holonomic system, Fig. 2 also shows the neutral point 9 of drawing from these windings.

Fig. 3 is the perspective view of a winding system isolator 6.In this embodiment, said isolator has four borings 10, with regard to available screw 7 this isolator is screwed on the bus 1 whereby.What play the insulator effect on the isolator 6 mainly is a cube 12.This cube has the groove 11 that is looped around on this cube, and this groove extends in a plane, and after isolator 6 installed, the plane at this groove place was perpendicular to the common axis line of each bus 1 of bus centering.In other execution modes of isolator 6, the design that groove 11 is adopted makes the plane at its place perpendicular to the beeline between bus.Can the creepage distance between two buses be adjusted to prescribed level in this way.The both sides that the geometry of isolator 6 also is included in the plane, groove 11 place that is looped around on this isolator are formed on two cube protuberances 13 on the cube insulator 12, respectively are provided with two borings 10 on each protuberance.Boring 10 all is parallel to the plane at groove 11 places that are looped around on the isolator 6.

Fig. 4 is the enlarged drawing of an intercell connector 8, and this intercell connector is as shown in Figure 2 to be used as two electric connection parts between the bus.Intercell connector 8 be cube and with the boring 10 corresponding positions of isolator 6 on have the boring 14 that several can supply screw 7 to screw in equally.Specific, certain embodiments are adopted in boring 14, make screw 7 be screwed into the flush of its head of back and intercell connector 8 or are embedded in wherein.Because above-mentioned geometry just can change isolator 6 into intercell connector 8 so when needed easily.Only need take off these four screws during replacing earlier, tighten again more afterwards.Wherein, the bus 1 among Fig. 2 is designed to, and need not to take off cable lug 5 from respective bus bars 1 when changing isolator 6 with intercell connector 8.

Intercell connector 8 is made of copper usually, 6 general ambroins that adopt of isolator.To this, the plastics that a kind of glass fiber strengthens are suitable especially.But isolator 6 also can be processed by a kind of pottery.

Fig. 5 is the perspective view after whole terminal box is removed lid.Termination shown in Figure 1 has been shown in this terminal box.Wherein, the bus 1 of arbitrary linear generatrice centering is given electric insulation by isolator 6.From this figure, can also find out, each isolator 6 all use be threaded in respective bus bars right in Fig. 5, be positioned at below the surface of that bus 1, the surface of isolator 6 then with in this figure, be positioned at above the flush of that bus 1.That is, be reference with base plate 3, the bus 1 that is positioned at the top among the figure is a little more than the bus 1 that is positioned at the below.Help like this in terminal box 15, connecting up.

Can also find out that from Fig. 5 all inlet wires all can pass an independent sidewall 16 of cube terminal box 15.For this reason, on sidewall 16, be provided with a large amount of borings, all be furnished with terminal screw 17 so that corresponding inlet wire is given mechanical fixation in these borings.As shown in Figure 1, bus 1 or corresponding bus are in tilted layout to the side with respect to rectangular base plate 3, and in the case, these buses or bus are to also being in tilted layout with respect to the sidewall that is provided with inlet wire 16, and this has just realized a kind of very compact terminal box.In addition, be used for providing the isolator 6 of effective electric insulation can also further improve this compactedness to the bus 1 of disposed proximate each other.

Through the intercell connector 8 that adopts winding system isolator 6 (being used to provide the electric clearance and the creepage distance of necessity) or use according to circumstances, can advantageously said terminal box be embodied as a kind of independent basic specification as electrical fitting.Can connect or insulation processing each bus on the spot as required.Based on this high degree of flexibility, can when being about to the actuating motor tool, determine again to connect still six connection buses (terminal to all windings, U1, V1, W1, U3, V3, W3) of bus (U1+U3, V1+V3, W1+W3) for it is provided with three.

Specific, through on terminal box, the measures such as layout that are geometry of winding system isolator 6, electrical fitting 8 and terminal strip or bus 1 being combined, can realize a kind of highly compact type terminal box.Can also reduce element diversity whereby, in addition, this basic structure of said terminal strip can be reduced to installation cost minimum, and need not to carry out terminal switching or prolong the multiply wiring (for example U1+U3 or U1, U3.。。)。The great advantage that bus is in tilted layout is the structure height that can reduce terminal box, needn't adopt stacked installation because each bus can roughly be in same plane.

Claims (11)

1. one kind is used for an electromechanical termination, comprising:

First bus (1) that is used for directly connecting said electromechanical first winding, and

Second bus (1) that is used for directly connecting said electromechanical second winding is characterized in that,

Said two buses (1) are disposed proximate each other; So that be necessary between said two buses (1), to install removably the isolator (6) of the insulating effect that electrifies, thus under a regulation operating voltage, prevent flashover and/or keep one the regulation creepage distance.

2. termination according to claim 1 is characterized in that, each bus in said two buses (1) all has a strip structure, said two mutual coaxial arrangement of bus.

3. termination according to claim 2 is characterized in that, said isolator (6) is arranged on the end face of each bus in said two buses (1).

4. termination according to claim 1 is characterized in that, said isolator (6) is directly with being threaded on each bus in said two buses.

5. termination according to claim 1 is characterized in that, said isolator (6) has one and is looped around groove (11) on this isolator to increase said creepage distance.

6. termination according to claim 1; It is characterized in that; Said isolator (6) is installed between said two buses via a fixture (7); Said fixture is arranged on an intercell connector (8) between said two buses (1) with certain mode after removing said isolator (6), makes said two buses (1) each other in an electrically conductive continuous.

7. termination according to claim 6 is characterized in that, said fixture (7) comprises two or four screws, can said isolator (6) or said intercell connector (8) directly be screwed on said two buses (1) by said screw.

8. termination according to claim 1 is characterized in that, on said two buses (1), can a plurality of electric conductors be installed along a prescribed direction, and said two buses are with respect to said prescribed direction tilt distribution.

9. a motor machine is characterized in that, comprises a shell, and said shell has a terminal box (15), and the described termination of one of aforesaid right requirement is installed in the said terminal box.

10. motor machine according to claim 9; It is characterized in that; Said terminal box (15) is cube, and all lead to outside cable and all pass an independent side (16) of said terminal box, and the angle between said bus (1) and the said side is between 20 ° to 70 °.

11. motor machine according to claim 10 is characterized in that, the angle between said bus (1) and the said side is between 35 ° to 55 °.

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