Insulation structure of spliced stator of medium-voltage motor

Abstract

The utility model discloses an insulation structure of a spliced stator of a medium-voltage motor, which comprises a stator core, two sides of the stator core are respectively provided with a tooth groove part which is used for enameling a round copper wire winding to form a coil, two ends of the stator core are respectively pasted with an insulation end plate through an insulation glue layer, the inner surface of each tooth groove part is pasted with a tooth groove insulation plate, and the insulation end plates are pasted with insulation glue layers. Spacing insulating plates are arranged between the enamelled round copper wires and are used for insulating the motor stator; the tooth groove insulating plate is bent upwards to wrap the enameled round copper wire and the tooth groove part; splicing tenons are arranged on one sides of the stator iron cores and the insulating end plates, and corresponding splicing mortises are arranged on the other sides of the stator iron cores and the insulating end plates and used for circle splicing of the stator iron cores. According to the utility model, the motor product has the advantages of simple structure, high safety, space saving, weight reduction, motor power density improvement and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor production technical field especially relates to a middle voltage motor block formula stator's insulation structure. BACKGROUND

[0002] Motor industry rated voltage generally involves low voltage motor, high voltage motor, low voltage motor involves rated voltage generally is 380V, 415V, 690V, high voltage motor involves rated motor generally is 3000V, 6000V, the utility model relates to motor rated voltage is 1140V, the utility model is called middle voltage motor

[0003] Low voltage motor adopts insulation structure for composite material + low voltage insulating paint, and the insulation end part has no limit, high voltage motor adopts insulation structure for mica material + high voltage insulating paint, and the insulation end part has no limit.

[0004] The middle voltage motor rated voltage of the utility model relates to 1140V, and the voltage withstanding to ground (interphase) is 1520V higher than ordinary 380V rated voltage motor, and the turn-to-turn voltage withstanding is 2128V higher than ordinary 380V rated voltage motor, so a kind of high voltage withstanding and the insulation structure with limited end motor axial space need to be researched. SUMMARY

[0005] To solve the problem that the above existing low voltage and high voltage electrode insulation end part has no limit, the utility model provides a kind of middle voltage motor block formula stator's insulation structure.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of middle voltage motor block formula stator's insulation structure, including stator core, the stator core both sides are provided with tooth slot part, for enameled round copper wire winding to form coil, the stator core both ends are pasted with insulation end plate by insulation glue layer, tooth slot insulation board is pasted in tooth slot part inner surface, and interval insulation board is provided between enameled round copper wire, for the insulation of motor stator;The tooth slot insulation board is bent upwards to wrap enameled round copper wire and tooth slot part;The stator core and the side of insulation end plate are provided with spliced tenon, and the other side is provided with corresponding spliced mortise, for the splicing circle of multiple stator cores.

[0008] Preferably, the outer side of the tooth slot insulation board near the spliced tenon side is provided with slot insulation board, for the slot insulation after the splicing circle of multiple stator cores.

[0009] Preferably, the edge of the insulation end plate is all chamfered, for preventing electrical sharp end discharge.

[0010] Compared with the prior art, the motor product has the advantages of simple structure, high safety, space saving, weight reduction, improved motor power density and the like. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a three-dimensional structure schematic view of the stator core end part after the insulating end plate is pasted in the embodiment of the utility model;

[0012] Figure 2 It is a three-dimensional structure schematic view of the tooth slot part of the stator core after the tooth slot insulating plate is assembled in the embodiment of the utility model;

[0013] Figure 3 It is a three-dimensional structure schematic view of the tooth slot part of the stator core after the tooth slot part of the stator core is wound with the enameled round copper wire and the enameled round copper wire is provided with the interval insulating plate in the embodiment of the utility model;

[0014] Figure 4 It is Figure 3 It is a schematic view of the interval insulating plate setting position in the embodiment of the utility model;

[0015] Figure 5 It is a three-dimensional structure schematic view of the embodiment after being assembled in the embodiment of the utility model;

[0016] Figure 6 It is a whole shape schematic view after being spliced in the embodiment of the utility model.

[0017] In the drawing: 1, stator core, 101, tooth slot part, 2, insulating end plate, 3, insulating adhesive layer, 4, splicing tenon, 5, splicing mortise, 6, tooth slot insulating plate, 7, enameled round copper wire, 8, interval insulating plate, 9, slot interval insulating plate. DETAILED DESCRIPTION

[0018] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal" and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0020] For example, Figures 1-6As shown, the utility model embodiment includes stator core 1, stator core 1 both sides are provided with tooth slot part 101, is used for the winding of enameled round copper wire 7 to form coil, the both ends of stator core 1 are pasted with insulating end plate 2 through insulating adhesive layer 3, tooth slot part 101 inner surface is pasted with tooth slot insulating plate 6, and enameled round copper wire 7 between is provided with interval insulating plate 8, is used for the insulation of motor stator;Tooth slot insulating plate 6 is bent upwards and wraps enameled round copper wire 7 and tooth slot part 101;Stator core 1 and the one side of insulating end plate 2 are provided with spliced tenon 4, the other side is provided with corresponding spliced mortise 5, is used for the round splicing of multiple stator cores 1.

[0021] As Figure 1 Shown, first according to the size of stator core 1 tooth slot part 101, the cross-sectional dimension of both ends insulating end plate 2 is designed, and according to the motor withstand voltage and heat resistance requirement, the tackiness of insulating adhesive layer 3 is selected, and according to the motor withstand voltage and winding end size space, the height dimension of both ends insulating end plate 2 is designed, then two insulating end plates are pasted on the both ends of stator core 1 through insulating adhesive layer 3, and in order to prevent electrical sharp end discharge, the two ends insulating end plate 2 that are pasted are rounded.

[0022] As Figure 2 Shown, tooth slot insulating plate 6 is arranged in tooth slot part 101, and then as Figure 3 And 4 Shown, after winding a circle enameled round copper wire 7, interval insulating plate 2 is installed, and then winding another circle enameled round copper wire 7, then as Figure 5 Shown, tooth slot insulating plate 6 is bent upwards, so that it wraps tooth slot part 101, and the outside of tooth slot insulating plate 6 close to spliced tenon 4 side is provided with slot insulating plate 9, is used for the slot insulation after the round splicing of multiple stator cores 1, so that as Figure 6 Shown, after the round splicing of multiple stator cores 1, high withstand voltage and the insulating effect of limited end motor axial space can be achieved.

[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An insulation structure of a medium voltage motor segmental stator, comprising a stator core, both sides of the stator core are provided with tooth slot parts for forming coils by enameled round copper wire windings, characterized in that: The stator core is pasted with insulating end plates through insulating adhesive layers at both ends, the inner surface of the tooth slot part is pasted with a tooth slot insulating plate, and a spacing insulating plate is arranged between the enameled round copper wires for the insulation of the motor stator; the tooth slot insulating plate is bent upwards to wrap the enameled round copper wires and the tooth slot part; the stator core and the insulating end plate are provided with a splicing tenon on one side and a corresponding splicing mortise on the other side for the splicing of multiple stator cores.

2. An insulation structure for a segmental stator of a medium voltage electrical machine according to claim 1, characterized in that: The outer side of the tooth slot insulating plate near the splicing tenon is provided with a slot spacing insulating plate for the slot spacing insulation after the splicing of multiple stator cores.

3. An insulation structure for a segmental stator of a medium voltage electrical machine according to claim 1 or 2, characterized in that: The edges of the insulating end plate are chamfered for preventing electrical sharp-end discharge.

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