A support structure for an exciter

Abstract

The utility model discloses a kind of support structure of exciter, including machine cover, the both ends of machine cover are respectively provided with fan cover and coupling flange;Machine cover and fan cover are oppositely buckled, form the excitation working cavity for installing exciter and radiating fan;There are hollow ventilation structure on machine cover and fan cover, when radiating fan works, generate radiating airflow in excitation working cavity;Coupling flange is used to connect generator main body, coupling flange is indirectly connected with machine cover by connecting assembly, make the distance between coupling flange and machine cover, to form partition space between generator main body and excitation working cavity. The support of the utility model separates exciter and generator main body in different cavities, and there is ventilation hole on support, and exciter can be cooled by fan.

Description

Technical Field

[0001] This utility model relates to the field of exciter technology, and in particular to a support structure for an exciter. Background Technology

[0002] In existing technology, the exciter bracket of a generator typically adopts a design where both ends of a circumferentially welded rib are flanged. One end of the bracket is connected to the end plate or end cover of the generator base via flanges and bolts, while the other end is connected to the exciter via flanges and bolts. In this structure, because the exciter and the generator body are installed in the same cavity, there is a drawback that hinders heat dissipation. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a support structure for an exciter. The support separates the exciter and the generator body into different cavities, and has ventilation holes, which can be combined with a fan to dissipate heat from the exciter.

[0004] Technical Solution: To achieve the above objectives, this utility model provides a support structure for an exciter, including a housing, with a fan cover and a connecting flange at each end of the housing; the housing and fan cover are fastened together to form an excitation working chamber for mounting the exciter and cooling fan; both the housing and fan cover have perforated ventilation structures, and when the cooling fan is working, it generates cooling airflow in the excitation working chamber; the connecting flange is used to connect the generator body, and the connecting flange is indirectly connected to the housing through a connecting assembly, so that the distance between the connecting flange and the housing is separated, thereby forming a partition space between the generator body and the excitation working chamber.

[0005] Furthermore, the shroud is provided with a plurality of air inlets, which are arranged radially along the axis of rotation of the exciter; the fan shroud is provided with a plurality of air outlets, which are arranged axially along the axis of rotation of the exciter.

[0006] Furthermore, the cover is composed of a rear cover and several circumferentially distributed side plates connected together; the rear cover is opposite to the connecting flange, and the rear cover has a shaft hole for the rotating shaft to extend out; several air outlets are provided on the side plates.

[0007] Furthermore, the connecting assembly includes a plurality of stiffening plates circumferentially distributed on the hood, with one end of each stiffening plate extending to the connecting flange.

[0008] Furthermore, several stiffening plates and several side plates are staggered, with adjacent side plates connected to the two sides of the stiffening plates respectively; at least one side plate is detachable, and the excitation working cavity is exposed after the side plate is removed.

[0009] Furthermore, at least one side panel is provided with a removable cover.

[0010] Furthermore, the fan cover consists of an annular shell and a front cover, with several air outlets provided on the front cover.

[0011] Furthermore, the machine cover and the fan cover are respectively provided with docking flanges on opposite sides, and the machine cover and the fan cover are connected to each other through the docking flanges.

[0012] Beneficial effects: The exciter support structure of this utility model consists of a machine cover, a fan cover and a connecting flange. The machine cover and the fan cover are fastened together to form an independent excitation working chamber. The exciter is located in the excitation working chamber, which keeps the exciter away from the generator body and is conducive to the heat dissipation of the exciter. There are ventilation holes on the machine cover and the fan cover. When the cooling fan is working, it generates a cooling airflow in the excitation working chamber to dissipate heat from the exciter. Attached Figure Description

[0013] Appendix Figure 1 This is a sectional view of the exciter support;

[0014] Appendix Figure 2 This is a schematic diagram of the overall structure of the exciter support;

[0015] Appendix Figure 3 This is a structural diagram of the machine cover and connecting flange. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] As attached Figures 1 to 3 The aforementioned exciter support structure includes a housing 1, with a fan cover 2 and a connecting flange 3 respectively located at both ends of the housing 1. The housing 1 and the fan cover 2 are fastened together, thereby forming an excitation working chamber 7 between the housing 1 and the fan cover 2 for mounting the exciter 4 and the cooling fan 6. (See attached image) Figure 1 As shown, a permanent magnet auxiliary exciter 5 is also provided in the excitation working chamber 7. The cover 1 covers the exciter 4 and the permanent magnet auxiliary exciter 5 respectively, while the fan cover 2 covers the cooling fan 6.

[0018] Both the housing 1 and the fan housing 2 have perforated ventilation structures. When the cooling fan 6 is working, it generates cooling airflow in the excitation working chamber 7 to cool the exciter 4 and the permanent magnet auxiliary exciter 5.

[0019] The connecting flange 3 is used to connect to the generator body. The connecting flange 3 is indirectly connected to the shroud 1 through the connecting assembly, so that the connecting flange 3 and the shroud 1 are separated by a distance, thereby forming a separation space 18 between the generator body and the excitation working chamber 7. As a result, the excitation working chamber 7 is far away from the generator body, and the heat generated by the generator body is less likely to affect the excitation working chamber 7, which is beneficial to the heat dissipation of the exciter 4 and the permanent magnet auxiliary exciter 5.

[0020] In the prior art, the exciter 4 and the generator body are usually installed in the same cavity, so the heat generated by the generator body will affect the exciter 4, which is not conducive to heat dissipation. In this invention, the exciter 4 and the generator body are located in different cavities, which can reduce the impact of the generator body on the exciter 4 and facilitate the heat dissipation of the exciter 4.

[0021] The shroud 1 has several air inlets 8 arranged radially along the shaft 10 of the exciter 4. The fan shroud 2 has several air outlets 9 arranged axially along the shaft 10 of the exciter 4. Because the air inlets 8 are arranged radially along the shaft 10, they are not opposite to the generator body and are less affected by the heat of the generator body. The gas temperature entering the excitation working chamber 7 is lower, which is more conducive to heat dissipation. The cooling fan 6 is a centrifugal fan, which is directly mounted on the shaft 10. When the exciter 4 is working, it drives the centrifugal fan to rotate. The centrifugal fan generates greater air pressure, which can promote the cooling airflow through the exciter 4 and the permanent magnet auxiliary exciter 5.

[0022] The housing 1 is composed of a rear cover 11 and several circumferentially distributed side plates 12. The rear cover 11 is opposite to the connecting flange 3, and the rear cover 11 and the connecting flange 3 are spaced apart. The rear cover 11 is provided with a shaft hole 19, which allows the rotating shaft 10 of the exciter 4 to extend out. Several air outlets 9 are correspondingly provided on the side plates 12.

[0023] The connecting assembly includes a plurality of stiffening plates 13 circumferentially distributed on the housing 1, with one end of each stiffening plate 13 extending to the connecting flange 3. The stiffening plates 13 and side plates 12 are staggered, with adjacent side plates 12 connected to opposite sides of the stiffening plate 13. At least one side plate 12 is detachable, exposing the excitation working chamber 7 after removal. (See attached...) Figure 2 and 3 In the embodiment shown, the side plates 12 on both sides of the housing 1 have a plurality of air inlets 8 distributed in a mesh pattern. The side plates 12 with air inlets 8 are fixed to the stiffener 13 by bolts. After the bolts are removed, the side plates 12 with air inlets 8 can be removed from the housing 1, thereby exposing the excitation working chamber 7, which facilitates the maintenance of the exciter 4 and the permanent magnet auxiliary exciter 5 inside the excitation working chamber 7.

[0024] At least one side panel 12 is provided with a removable cover 14. (See attached image) Figure 2 and 3 In the embodiment shown, a wiring chamber is formed on the side plate 12 at the top of the housing 1. The wiring terminals of the exciter 4 are located in the wiring chamber. A cover plate 14 is provided on the top of the wiring chamber. Removing the cover plate 14 facilitates maintenance of the wiring terminals of the exciter 4.

[0025] A lifting ring 21 is connected to the stiffening plate 13. The lifting ring 21 is located in the partition space 18 between the connecting flange 3 and the rear cover 11. The lifting ring 21 facilitates the movement of the exciter 4 support.

[0026] The fan shroud 2 consists of an annular cover 15 and a front cover 16, with several air outlets 9 disposed on the front cover 16. A conical guide plate 20 is disposed inside the annular cover 15, with the larger diameter end of the guide plate 20 close to the air outlets 9. The centrifugal fan throws airflow onto the guide plate 20, and the airflow is discharged from the air outlets 9 under the guidance of the guide plate 20.

[0027] The machine cover 1 and the fan cover 2 are respectively provided with docking flanges 17 on opposite sides. The docking flange 17 on the machine cover 1 is fixedly connected to the stiffening plate 13, and the docking flange 17 on the fan cover 2 is fixedly connected to the annular cover 15. The machine cover 1 and the fan cover 2 are connected to each other through the docking flanges 17, and the two docking flanges 17 are fixed relative to each other by bolts.

[0028] The bracket structure of this invention facilitates heat dissipation for the exciter 4. The exciter 4 and the permanent magnet auxiliary exciter 5 are located within an independent excitation working chamber 7, keeping them away from the main generator body. A cooling fan 6 is mounted on the rotating shaft 10 to further enhance heat dissipation for both the exciter 4 and the permanent magnet auxiliary exciter 5. Furthermore, the bracket structure of this invention facilitates maintenance of the exciter 4 and the permanent magnet auxiliary exciter 5. When the exciter 4 or the permanent magnet auxiliary exciter 5 malfunctions, only the side plate 12 or the cover plate 14 needs to be removed to open the excitation working chamber 7, without needing to disassemble the motor end cover, bearing assembly, or other components.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A support structure for an exciter, characterized in that: The generator includes a housing (1), with a fan cover (2) and a connecting flange (3) at each end. The housing (1) and the fan cover (2) are fastened together to form an excitation working chamber (7) for installing the exciter (4) and the cooling fan (6). Both the housing (1) and the fan cover (2) have perforated ventilation structures. When the cooling fan (6) is working, it generates a cooling airflow in the excitation working chamber (7). The connecting flange (3) is used to connect the generator body. The connecting flange (3) is indirectly connected to the housing (1) through a connecting component, so that the distance between the connecting flange (3) and the housing (1) is separated, thereby forming a separation space (18) between the generator body and the excitation working chamber (7).

2. The support structure for an exciter according to claim 1, characterized in that: The shroud (1) is provided with several air inlets (8), which are arranged radially along the shaft (10) of the exciter (4); the fan shroud (2) is provided with several air outlets (9), which are arranged axially along the shaft (10) of the exciter (4).

3. The support structure for an exciter according to claim 2, characterized in that: The cover (1) is formed by connecting a rear cover (11) and several side plates (12) distributed in a circumferential direction; the rear cover (11) is opposite to the connecting flange (3), and the rear cover (11) has a shaft hole (19) for the shaft (10) to extend out; several air outlets (9) are provided on the side plates (12).

4. The support structure for an exciter according to claim 3, characterized in that: The connecting assembly includes a plurality of stiffeners (13) circumferentially distributed on the housing (1), with one end of the stiffeners (13) extending to the connecting flange (3).

5. The support structure for an exciter according to claim 4, characterized in that: Several stiffening plates (13) and several side plates (12) are staggered, and adjacent side plates (12) are respectively connected to the two sides of the stiffening plate (13); at least one side plate (12) is detachable, and the excitation working cavity (7) is exposed after the side plate (12) is removed.

6. The support structure of an exciter according to claim 5, characterized in that: At least one side panel (12) is provided with a removable cover plate (14).

7. The support structure for an exciter according to claim 3, characterized in that: The fan cover (2) consists of an annular cover (15) and a front cover (16), with several air outlets (9) provided on the front cover (16).

8. The support structure of an exciter according to claim 7, characterized in that: The machine cover (1) and the fan cover (2) are respectively provided with docking flanges (17) on opposite sides, and the machine cover (1) and the fan cover (2) are connected to each other through the docking flanges (17).

Images