Slot excitation rotor slot bottom insulation paper installation structure

Abstract

The utility model discloses a slot excitation rotor slot bottom insulation paper installation structure comprising an iron core, a plurality of slots are arranged on the iron core, insulation paper is plugged in the slots, and the upper end and the lower end of the iron core are connected with insulation end plates; the diameter of the insulating end plate is not greater than that of the iron core; the number of the through grooves is the same as that of the slots, and the through grooves are communicated with each other. The inner wall of the through groove is matched with the inner wall of the slot; a through hole is formed in the iron core; connecting grooves communicated with the through holes are formed in the two insulating end plates; an insulating plug-in is plugged between the through hole and the connecting groove; the two insulating end plates are fixedly connected with the upper end and the lower end of the iron core through the connecting grooves. According to the utility model, groove bottom insulation is improved, folded edges of insulation paper extending out of the end faces of the iron core are cancelled, and insulation end plates are added on the two end faces of the iron core, so that the winding height is reduced and copper wire consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of excitation rotors, in particular to a slot excitation rotor slot bottom insulation paper installation structure. Background Art

[0002] The slot bottom insulation of the existing exciter rotor uses insulating paper to insulate the winding and the iron core. To ensure overall insulation, the insulating paper on both ends of the iron core is folded and has a higher size, which will cause the winding end size to be higher and cause waste of enameled wire. Utility Model Content

[0003] The utility model aims to solve the problems in the prior art and proposes a slot excitation rotor slot bottom insulation paper installation structure.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A slot-excited rotor slot bottom insulation paper installation structure includes an iron core, an upper row of which is provided with a plurality of slots, insulating paper is inserted into the slots, and insulating end plates are connected to the upper and lower ends of the iron core; the diameter of the insulating end plates is not larger than the diameter of the iron core; the upper row of the insulating end plates is provided with through slots that are the same in number as the slots and are connected; and the inner walls of the through slots match the inner walls of the slots; the iron core is provided with a through hole; two of the insulating end plates are provided with connecting grooves that are connected to the through hole; an insulating plug is inserted between the through hole and the connecting groove; and the two insulating end plates are fixedly connected to the upper and lower ends of the iron core through the connecting groove.

[0006] Preferably, the length of the insulating paper is higher than the height of the iron core; both upper and lower ends of the insulating paper are provided with protrusions to the outside of the iron core; and the height of the insulating paper is not greater than the maximum length between the two insulating end plates.

[0007] Preferably, the insulating end plate is annular; and a connecting block is connected to the inner side of the insulating end plate; the connecting groove is provided on the connecting block; and the insulating end plate is fixedly connected to the iron core via the connecting block.

[0008] Preferably, a limiting groove is provided on the inner side of the iron core; the iron core is connected to the outside through the limiting groove.

[0009] Compared with the prior art, the present invention provides a slot excitation rotor slot bottom insulation paper installation structure, which has the following beneficial effects:

[0010] The slot excitation rotor slot bottom insulation paper installation structure improves the slot bottom insulation, eliminates the folded edges of the insulation paper extending out of the core end faces, adds insulating end plates on both end faces of the core, reduces the winding height, and reduces copper wire consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a partial structural diagram of the utility model.

[0013] In the figure: 10, iron core; 11, slot; 12, insulating paper; 13, through hole; 14, limit groove; 21, insulating end plate; 22, through groove; 23, connecting groove; 24, insulating plug; 25, connecting block. DETAILED DESCRIPTION

[0014] The following will refer to Figure 1-2 , the specific implementation method of the insulating paper installation structure at the bottom of the slot of the middle slot excitation rotor of the utility model is introduced, including an iron core 10, wherein the upper row of the iron core 10 is provided with a plurality of slots 11, and insulating paper 12 is inserted in the slots 11, wherein the insulating paper 12 has no folded edges; the upper and lower ends of the iron core 10 are connected with insulating end plates 21; the diameter of the insulating end plates 21 is not larger than the diameter of the iron core 10; the upper row of the insulating end plates 21 is provided with through slots 22 that are the same in number as the slots 11 and are connected; and the inner walls of the through slots 22 match the inner walls of the slots 11; the iron core 10 is provided with a through hole 13; the two insulating end plates 21 are provided with connecting grooves 23 that are connected to the through hole 13; an insulating plug-in 24 is inserted between the through hole 13 and the connecting groove 23; the two insulating end plates 21 are fixedly connected to the upper and lower ends of the iron core 10 through the connecting groove 24.

[0015] To prevent the length of the insulating paper 12 from being too high, the length of the insulating paper 12 is higher than the height of the iron core 10; the upper and lower ends of the insulating paper 12 are provided with protrusions to the outside of the iron core 10; and the height of the insulating paper 12 is not greater than the maximum length between the two insulating end plates 21, thereby reducing the overall height.

[0016] The insulating end plate 21 is in a circular shape; and a connecting block 26 is connected to the inner side of the insulating end plate 21; the connecting groove 23 is provided on the connecting block 25; the insulating end plate 21 is fixedly connected to the iron core 10 through the connecting block 25, without changing the structure of the iron core 10, and facilitating the installation and fixation of the insulating end plate 21.

[0017] A limiting groove 14 is provided inside the iron core 10 ; the iron core 10 is connected to the outside through the limiting groove 14 .

[0018] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slot excitation rotor slot bottom insulation paper installation structure, comprising an iron core (10), wherein the iron core (10) is provided with a plurality of slots (11) in an upper row, and insulating paper (12) is inserted into the slots (11), characterized in that: The upper and lower ends of the iron core (10) are both connected with insulating end plates (21); the diameter of the insulating end plates (21) is not larger than the diameter of the iron core (10); the upper row of the insulating end plates (21) is provided with through slots (22) the same in number as and in communication with the slots (11); and the inner walls of the through slots (22) match the inner walls of the slots (11); the iron core (10) is provided with a through hole (13); the two insulating end plates (21) are provided with connecting slots (23) in communication with the through hole (13); an insulating plug-in (24) is inserted between the through hole (13) and the connecting slot (23); the two insulating end plates (21) are fixedly connected to the upper and lower ends of the iron core (10) through the connecting slots (23).

2. The slot excitation rotor slot bottom insulation paper installation structure according to claim 1, characterized in that: The length of the insulating paper (12) is higher than the height of the iron core (10); both upper and lower ends of the insulating paper (12) are provided with protrusions to the outside of the iron core (10); and the height of the insulating paper (12) is not greater than the maximum length between the two insulating end plates (21).

3. The slot excitation rotor slot bottom insulation paper installation structure according to claim 1, characterized in that: The insulating end plate (21) is annular; a connecting block (25) is connected to the inner side of the insulating end plate (21); the connecting groove (23) is provided on the connecting block (25); and the insulating end plate (21) is fixedly connected to the iron core (10) via the connecting block (25).

4. The slot excitation rotor slot bottom insulation paper installation structure according to claim 1, characterized in that: A limiting groove (14) is provided on the inner side of the iron core (10); the iron core (10) is connected to the outside through the limiting groove (14).

Images