High-power three-phase annular transformer capable of dissipating heat by means of motor water jacket cooling

Abstract

The utility model discloses a high-power three-phase toroidal transformer capable of cooling and dissipating heat by means of a motor water jacket, and relates to the technical field of three-phase toroidal transformers. A motor rotating shaft is arranged in the middle of the motor protection shell, and a cooling water channel is formed in the inner side of the edge of the motor protection shell; a transformer shell is arranged on the inner side of the right end of the motor protection shell, an inner ring is arranged on the inner side of the transformer shell, a dovetail groove is formed in the inner side of the outer end of the inner ring, a winding yoke is arranged on the inner side of the dovetail groove, a main coil is arranged on the outer side of the winding yoke, and a secondary coil is arranged on the outer side of the main coil. The technical problems that a single transformer is large in size, no independent transformer placing position exists in an application site, after the transformer is integrated with a motor and a frequency converter system, the system is large in size, most systems do not have installation space for transformation, and meanwhile a conventional transformer is poor in heat dissipation condition and does not have sufficient heat exchange conditions are solved.

Description

Technical Field

[0001] This utility model relates to the field of three-phase toroidal transformer technology, specifically to a high-power three-phase toroidal transformer that utilizes a motor water jacket for heat dissipation. Background Technology

[0002] Three-phase transformers are a common type of power distribution device. Three-phase toroidal transformers are one type of three-phase transformer, consisting of first, second, and third toroidal transformers, used to transform the first, second, and third phase voltages of the three-phase voltage.

[0003] Compared to existing three-phase toroidal transformers, conventional transformers have the following drawbacks: they are large in size, there is no space to place them at the application site, and after integration with motor and frequency converter systems, the system size is large, and there is no installation space for most system modifications. At the same time, conventional transformers have poor heat dissipation and lack sufficient heat exchange conditions. Utility Model Content

[0004] The purpose of this utility model is to provide a high-power three-phase toroidal transformer that uses a water jacket for heat dissipation of the motor, and to solve the following technical problems: the single transformer is large in size, there is no place to put the transformer separately at the application site, and after integration with the motor and frequency converter system, the system size is large, and there is no installation space for most system modifications. At the same time, conventional transformers have poor heat dissipation conditions and lack sufficient heat exchange conditions.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A high-power three-phase toroidal transformer that utilizes a water jacket cooling system for the motor, and a protective casing for the motor.

[0007] The motor protective housing has a motor shaft in the middle and a cooling water channel on the inner side of the edge of the motor protective housing.

[0008] A transformer housing is provided on the inner side of the right end of the motor protective housing. An inner ring is provided on the inner side of the transformer housing. A dovetail groove is provided on the inner side of the outer end of the inner ring. A winding yoke is provided on the inner side of the dovetail groove. A main coil is provided on the outer side of the winding yoke. A secondary coil is provided on the outer side of the main coil.

[0009] As a further embodiment of this utility model: a motor mounting base plate is fixedly installed at the lower end of the motor protective shell, and reserved limiting holes and slots are equidistantly distributed on the inner side of the motor mounting base plate. A water outlet is provided on the upper front side of the motor protective shell, and a water inlet is provided on the lower front side of the motor protective shell.

[0010] As a further embodiment of this utility model: a motor rotor is provided on the outer side of the middle part of the motor shaft, and a motor stator connected to the motor protective housing is provided on the outer side of the motor rotor.

[0011] As a further embodiment of this utility model: a front cover is provided at the left end of the motor protective housing, a fastening bolt is provided at the connection between the front cover and the motor protective housing, and a front bearing block connected to the motor shaft is provided on the inner side of the front cover.

[0012] As a further embodiment of this utility model: the right end of the motor shaft is provided with a rear end cover that is connected to the motor protective housing by fastening bolts, and the inner side of the rear end cover is provided with a rear bearing block that is connected to the motor shaft.

[0013] As a further embodiment of this utility model: the winding yoke is connected to the inner ring by a snap-fit ​​method through a dovetail groove, and the winding yoke is arranged in three equal parts about the center point of the inner ring.

[0014] As a further embodiment of this utility model: the main coil and the secondary coil are wound sequentially around the outside of the winding yoke.

[0015] The beneficial effects of this utility model are:

[0016] 1. The integrated design of transformer and motor is realized, achieving the effects of compact structure, small size, light weight and low cost. The motor water-cooled shell is used for heat dissipation, making the heat dissipation conditions better than those of conventional transformers. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0019] Figure 2 This is a front view cross-sectional structural diagram of the connection between the winding yoke and the main coil of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the connection between the winding yoke and the secondary coil of this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the connection between the inner ring and the winding yoke of this utility model;

[0022] Figure 5 This is an exploded structural diagram of the connection between the inner ring and the winding yoke of this utility model;

[0023] Figure 6 This is an exploded structural diagram of the connection between the winding yoke and the main coil of this utility model.

[0024] In the diagram: 1. Motor protective housing; 2. Motor mounting base plate; 3. Motor shaft; 4. Motor rotor; 5. Motor stator; 6. Front cover; 7. Front bearing block; 8. Rear cover; 9. Rear bearing block; 10. Cooling water channel; 11. Water outlet; 12. Water inlet; 13. Transformer housing; 14. Inner ring; 15. Dovetail groove; 16. Winding yoke; 17. Main coil; 18. Secondary coil. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 2-6 As shown, this utility model is a high-power three-phase toroidal transformer that utilizes a water jacket for heat dissipation in a motor. Specifically, it features a compact structure, small size, light weight, and low cost. It includes a transformer housing 13 located on the inner right side of the motor protective housing 1, an inner ring 14 located on the inner side of the transformer housing 13, a dovetail groove 15 located on the inner side of the outer end of the inner ring 14, a winding yoke 16 located on the inner side of the dovetail groove 15, a main coil 17 located on the outer side of the winding yoke 16, and a secondary coil 18 located on the outer side of the main coil 17.

[0028] In this embodiment, preferably, the winding yoke 16 is connected to the inner ring 14 by a snap-fit ​​method through the dovetail groove 15, and the winding yoke 16 is arranged in three equal parts about the center point of the inner ring 14; the main coil 17 and the secondary coil 18 are wound sequentially on the outside of the winding yoke 16.

[0029] In summary, the main coil 17 and the secondary coil 18 are first wound sequentially around the outside of the winding yoke 16, with the secondary coil 18 located outside the main coil 17. Since there is no large gap between the main coil 17 and the secondary coil 18, and after winding, the structure is filled with insulating material with good thermal conductivity, making the structure more compact and more conducive to water cooling. Then, the winding yoke 16 is engaged with the inner ring 14 through the dovetail groove 15, which secures the two together. Winding the main coil 17 and the secondary coil 18 first can avoid the problem of complex and difficult winding.

[0030] Example 2

[0031] Reference Figure 1 , Figure 2 and Figure 6The image shows the second embodiment of this utility model, which uses a water-cooled motor housing to dissipate heat, making the heat dissipation conditions better than those of a conventional transformer. It includes a motor protective housing 1; a motor shaft 3 is provided in the middle of the motor protective housing 1, and a cooling water channel 10 is provided on the inner side of the edge of the motor protective housing 1.

[0032] In this embodiment, preferably, a motor mounting base plate 2 is fixedly installed at the lower end of the motor protective housing 1. The inner side of the motor mounting base plate 2 is provided with reserved limiting holes and slots at equal intervals. A water outlet 11 is provided on the upper front side of the motor protective housing 1, and a water inlet 12 is provided on the lower front side of the motor protective housing 1. A motor rotor 4 is provided on the outer side of the middle part of the motor shaft 3, and a motor stator 5 connected to the motor protective housing 1 is provided on the outer side of the motor rotor 4. A front end cover 6 is provided on the left end of the motor protective housing 1, and a fastening bolt is provided at the connection between the front end cover 6 and the motor protective housing 1. A front bearing block 7 connected to the motor shaft 3 is provided on the inner side of the front end cover 6. A rear end cover 8 connected to the motor protective housing 1 by fastening bolts is provided on the right end of the motor shaft 3, and a rear bearing block 9 connected to the motor shaft 3 is provided on the inner side of the rear end cover 8.

[0033] In summary, after the inner ring 14 and the winding yoke 16 are connected and installed, they are secured by the transformer housing 13 and encapsulated with epoxy material with good thermal conductivity. This improves the overall strength of the transformer, enhances the heat conduction path, facilitates water jacket cooling, and fixes the outer periphery of the transformer housing 13 within the motor protective shell 1, ensuring reliable installation and good contact with the motor protective shell 1, thus increasing thermal conductivity. Meanwhile, the motor protective shell 1 is explosion-proof and can be used in locations with explosion-proof requirements. The transformer housing 13, placed within the motor protective shell 1, does not require additional explosion-proof treatment.

[0034] Example 3

[0035] This embodiment is obtained by combining Embodiment 1 and Embodiment 2.

[0036] The above-mentioned modular installation method solves the problem of winding difficulties. Unlike conventional transformers that use oriented silicon steel sheets, this solution uses non-oriented silicon steel sheets, which have small differences in magnetic properties in all directions. Furthermore, the water cooling of the motor enhances the heat dissipation effect.

[0037] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-power three-phase toroidal transformer that utilizes a water jacket for heat dissipation from a motor, characterized in that, include; Motor protective housing (1); The motor protective housing (1) is provided with a motor shaft (3) in the middle, and a cooling water channel (10) is provided on the inner side of the edge of the motor protective housing (1); A transformer housing (13) is provided on the inner side of the right end of the motor protective housing (1). An inner ring (14) is provided on the inner side of the transformer housing (13). A dovetail groove (15) is provided on the inner side of the outer end of the inner ring (14). A winding yoke (16) is provided on the inner side of the dovetail groove (15). A main coil (17) is provided on the outer side of the winding yoke (16). A secondary coil (18) is provided on the outer side of the main coil (17).

2. A high-power three-phase toroidal transformer with water jacket cooling for heat dissipation via a motor, as described in claim 1, is characterized in that... The lower end of the motor protective housing (1) is fixedly installed with a motor mounting base plate (2). The inner side of the motor mounting base plate (2) is provided with reserved limiting holes and slots at equal intervals. The upper front end of the motor protective housing (1) is provided with a water outlet (11), and the lower front end of the motor protective housing (1) is provided with a water inlet (12).

3. A high-power three-phase toroidal transformer with heat dissipation via a water jacket cooling system for a motor, as described in claim 1, is characterized in that... A motor rotor (4) is provided on the outer side of the middle part of the motor shaft (3), and a motor stator (5) connected to the motor protective shell (1) is provided on the outer side of the motor rotor (4).

4. A high-power three-phase toroidal transformer with heat dissipation via a water jacket cooling system for a motor, as described in claim 2, is characterized in that... The left end of the motor protective housing (1) is provided with a front cover (6), and a fastening bolt is provided at the connection between the front cover (6) and the motor protective housing (1). The inner side of the front cover (6) is provided with a front bearing block (7) connected to the motor shaft (3).

5. A high-power three-phase toroidal transformer with heat dissipation via a water jacket cooling system for a motor, as described in claim 4, is characterized in that... The right end of the motor shaft (3) is provided with a rear end cover (8) connected to the motor protective housing (1) by fastening bolts, and the inner side of the rear end cover (8) is provided with a rear bearing block (9) connected to the motor shaft (3).

6. A high-power three-phase toroidal transformer with water jacket cooling for heat dissipation via a motor, as described in claim 1, is characterized in that... The winding yoke (16) is connected to the inner ring (14) by a snap-fit ​​method through the dovetail groove (15), and the winding yoke (16) is arranged in three equal parts about the center point of the inner ring (14).

7. A high-power three-phase toroidal transformer with heat dissipation via a water jacket cooling system for a motor, as described in claim 1, is characterized in that... The main coil (17) and the secondary coil (18) are wound sequentially around the outside of the winding yoke (16).

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