An end plate ( 1, 11 ) for a stator ( 31 ) wound with a cable in a rotating electric machine, the plate ( 1, 11 ) being provided with axially running winding slots ( 2 ) corresponding to the stator ( 31 ) and axially running apertures ( 19, 21, 22, 26 ) for cooling tubes corresponding to the stator
An end plate ( 1, 11 ) for a stator ( 31 ) wound with a cable in a rotating electric machine, the plate ( 1, 11 ) being provided with axially running winding slots ( 2 ) corresponding to the stator ( 31 ) and axially running apertures ( 19, 21, 22, 26 ) for cooling tubes corresponding to the stator ( 31 ), and that the plate ( 1, 11 ) is provided with at least one bending member ( 20, 23, 27 ) pre-shaped in the plate ( 1, 11 ) for cooling tubes ( 33 ) insertable into the cooling-tube apertures ( 19, 21, 22, 26 ) and also a procedure for supporting and protecting a cooling tube in a first axially running aperture at its exit from a stator in a rotating electric machine, whereby an end plate provided with bending members is applied at the end of the stator, the cooling tube being bent around the bending member before continuing, either by being fitted in a second axially running aperture in the stator or for extension out of the stator.
대표청구항▼
1. An end plate for a stator of a rotating electric machine wound with a cable, comprising:axially running winding slots corresponding to winding slots in the stator;axially running apertures configured to receive a cooling tube; andat least one bending member pre-shaped in the end plate and configu
1. An end plate for a stator of a rotating electric machine wound with a cable, comprising:axially running winding slots corresponding to winding slots in the stator;axially running apertures configured to receive a cooling tube; andat least one bending member pre-shaped in the end plate and configured to direct the cooling tube into the apertures, whereinthe axially running winding slots are configured as a radial chain slot having at least one slot, each of the at least one slots having a round shape corresponding to a cross section of the cable, andthe axially running apertures are configured to provide cooling to at least stator teeth forming the winding slots. 2. An end plate as claimed in claim 1, wherein the end plate is radially divided into sectors, each sector corresponding to one or more slot divisions. 3. An end plate as claimed in claim 1, wherein the end plate comprises a laminated material. 4. An end plate as claimed in claim 1, wherein the end plate has an axial thickness t such that t>F r , F r being an external diameter of the cooling tubes. 5. An end plate as claimed in claim 1, wherein the end plate has casting channels for receiving a sealing member, at an exit of each winding slot from the end plate. 6. An end plate as claimed in claim 1, wherein the cable comprises a high-voltage cable. 7. An end plate as claimed in claim 1, wherein the end plate is dimensioned for receiving a high-voltage cable having a diameter of about 20 mm to about 250 mm and a conducting area of about 40 mm 2 to about 3000 mm 2 . 8. An end plate as claimed in claim 1, wherein the cable comprises a conductive core and an electric field confining insulating covering surrounding the core. 9. An end plate as claimed in claim 1, wherein the bending member is bent in at least one step of 90°. 10. An end plate as claimed in claim 9, wherein the cooling tube has an outlet and the end plate has at least one inlet slit for the outlet of the cooling tube. 11. An end plate as claimed in claim 10, wherein the end plate has attachment holes for insertion of a casting device. 12. An end plate as claimed in claims 11 , having at least one turn around slot therein, and wherein the casting device is shaped to seal at least one of the turn-around slits of the end plate and includes a nipple for pressing a casting compound therein. 13. An end plate as claimed in claim 9, wherein the end plate has a turn-around slit for at least one bending member. 14. An end plate as claimed in claim 1, wherein the winding is flexible and comprises an electrically conducting core surrounded by an inner semiconducting layer, an insulating layer surrounding the inner semiconducting layer formed of solid material, and an outer semiconducting layer surrounding the insulating layer, said layers being adhered to each other. 15. An end plate as claimed in claim 14, wherein a material of the inner semiconducting layer, a material of the insulating layer, and a material of the outer semiconducting layer each having an elasticity and a coefficient of thermal expansion such that a change in volume in the layers caused by temperature fluctuations during operation is absorbed by the elasticity of the materials so that the layers retain their adhesion to each other at the temperature fluctuations occurring during operation. 16. An end plate as claimed in claim 14, wherein a material of the inner semiconducting layer, a material of the insulating layer, and a material of the outer-semiconducting layer each having an E-modulus less than about 500 MPa. 17. An end plate as claimed in claim 14, wherein the coefficients of thermal expansion for the materials in said layers are substantially the same. 18. An end plate as claimed in claim 14, wherein an adhesion between the layers is of at least a same magnitude as a strength of a weakest one of a material of the inner semiconducting layer, a material of the insulating layer, and a material of the outer semiconducting layer. 19. An end plate as claimed in claim 14, wherein each of the semiconducting layers comprises an equipotential surface. 20. An end plate as claimed in claim 14, wherein a material of the inner semiconducting layer, a material of the insulating layer, and a material of the outer semiconducting layer each having an E-modulus less than about 200 MPa. 21. A procedure for supporting and protecting a cooling tube in a first axially running aperture at its exit from a stator in a rotating electric machine, comprising the steps of applying an end plate provided with bending members at the end of the stator, bending the cooling tube around the bending member before continuing, by at least one of being fitted in a second axially running aperture in the stator and for extension out of the stator, whereinthe end plate includes axially running winding slots corresponding to winding slots in the stator and configured as radial chain slots having at least one slot, each of the at least one slots having a round shape corresponding to a cross section of a cable winding, andthe first axially running aperture and the second axially running aperture are configured to provide cooling to at least stator teeth forming the winding slots. 22. A rotating electric machine, comprising:a stator having stator slots, each stator slot including a plurality of winding slots formed by stator teeth running axially, the plurality of winding slots being arranged radially along the stator slot;a winding of a high-voltage cable drawn through the winding slots; andan end plate includinga plurality of winding slots running axially and corresponding to the plurality of winding slots,a plurality of apertures running axially and configured to receive a cooling tube, andat least one bending member pre-shaped in the end plate and configured to direct the cooling tube into the plurality of apertures, whereinthe plurality of apertures are configured to provide cooling to at least the stator teeth.
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