A connection structure for stator windings connected in parallel to the terminal block conductor busbar

Abstract

This utility model belongs to the field of wind turbine technology and discloses a connection structure from a stator winding parallel ring to a junction box conductor busbar. It includes: a housing; a stator winding disposed within the housing; a parallel ring assembly mounted on the stator winding; and a junction box disposed on one side of the housing. The connection structure includes: a first conductor busbar assembly, the inner end of which is electrically connected to the parallel ring assembly; a second conductor busbar assembly, electrically connected to the outer end of the first conductor busbar assembly; and a third conductor busbar assembly, one end electrically connected to the second conductor busbar assembly and the other end connected to the junction box. This utility model connects the stator winding parallel ring to the junction box conductor busbar through multiple sequentially connected conductor busbars, resulting in a more stable structure, a more rational spatial layout, reduced overall weight of the wind turbine, lower equipment cost, effectively reduced risk, ensured reliable generator operation, and reduced after-sales maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine technology, and in particular relates to a connection structure of the stator winding in a wind turbine connected in parallel to the conductive busbar of the junction box. Background Technology

[0002] With the rapid development of the wind power industry, the power output of wind turbines is constantly increasing. The connection structure of the stator winding parallel loop to the junction box conductor busbar is a core component of the generator, and its stability is of paramount importance. If a fault occurs, the generator will be unable to operate, increasing after-sales maintenance costs.

[0003] The current connection structure between the stator winding parallel loop and the junction box busbar involves direct cable connection between the parallel loop and the busbar. This structure has significant drawbacks for high-power generators. High-power generators have very high current-carrying capacity requirements for cables, but the cables that meet these requirements are large in size, heavy in weight, prone to sagging, inconvenient to fix, and require a large number of cables, making them difficult to arrange in confined space and costly.

[0004] In view of this, the present invention improves the connection structure of the stator winding in parallel to the terminal box conductor busbar, thus overcoming the problems mentioned above.

[0005] The purpose is to provide a simple, easy-to-fix, lightweight and low-cost connection structure for connecting the stator windings in parallel to the terminal block conductors, which can ensure reliable motor operation and reduce after-sales maintenance costs. Utility Model Content

[0006] To address the problems in the related technologies, this application provides a connection structure for the stator winding to the terminal block in parallel. The structure is simple, easy to fix, lightweight and low in cost, which can ensure the reliable operation of the motor and reduce after-sales maintenance costs, thereby solving the defects mentioned in the background technology.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a connection structure for a stator winding parallel ring to a junction box conductor busbar, comprising: a housing; a stator winding disposed within the housing; a parallel ring assembly mounted on the stator winding; and a junction box disposed on one side of the housing. The connection structure includes: a first conductor busbar assembly, the inner end of which is electrically connected to the parallel ring assembly; a second conductor busbar assembly, electrically connected to the outer end of the first conductor busbar assembly; and a third conductor busbar assembly, one end of which is electrically connected to the second conductor busbar assembly, and the other end of which is connected to the junction box.

[0008] In a further design, the first busbar assembly includes multiple sequentially arranged lead-out busbars; the parallel ring assembly includes multiple parallel rings, each corresponding one-to-one with a lead-out busbar.

[0009] In a further design, the second conductive bus assembly includes multiple sequentially arranged connecting conductive buses, each corresponding one-to-one with the lead-out conductive bus.

[0010] In a further design, the third conductive bus assembly includes multiple sequentially arranged junction box conductive buses, with each connecting conductive bus corresponding to a junction box conductive bus.

[0011] In a further design, the parallel ring is connected to the lead-out conductive busbar, the connecting conductive busbar is connected to the lead-out conductive busbar, and the connecting conductive busbar is connected to the junction box conductive busbar via a movable connecting component.

[0012] In a further design, the movable connection assembly includes a bolt and a nut that mate with each other; the bolt is fitted with a washer and a spring washer.

[0013] In a further design, one end of the lead-out conductive busbar and one end of the connecting conductive busbar are respectively provided with multiple grooves; the other end of the connecting conductive busbar and one end of the junction box conductive busbar are provided with multiple oblique strips; the oblique strips and the grooves are designed to correspond one-to-one.

[0014] Compared with existing technologies, the beneficial effects of this patented technology, which adopts the above technical solution, are as follows: The stator winding parallel ring to junction box conductive busbar connection structure of this utility model connects the stator winding parallel ring to the junction box conductive busbar through multiple sequentially connected conductive busbars. The structure is more stable, the spatial layout is more reasonable, the overall weight of the wind turbine is reduced, the equipment cost is lower, the risk can be effectively reduced, the reliable operation of the generator can be guaranteed, and the after-sales maintenance cost can be reduced. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0016] Figure 1 This is a partial structural schematic diagram of the parallel ring assembly and the first conductive busbar assembly in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the second and third conductive busbar assemblies inside the junction box in this embodiment of the present invention.

[0018] Figure 3This is a schematic diagram of the overall structure from one angle of an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the overall structure from another angle of an embodiment of the present invention.

[0020] In the diagram: 1. Parallel ring assembly; 2. Second conductor bus assembly; 3. Third conductor bus assembly; 4. First conductor bus assembly; 5. Movable connection assembly; 6. Junction box; 7. Stator winding; 8. Housing; 9. Mounting plate. Detailed Implementation

[0021] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0022] Example like Figure 1-4 As shown, a connection structure from the stator winding parallel ring to the junction box conductor bus includes a wind turbine housing 8, a stator winding 7 inside the housing 8, a parallel ring assembly 1 mounted on the stator winding 7, and the stator winding 7 and the parallel ring assembly 1 electrically connected. The housing 8 is provided with multiple mounting plates 9 to facilitate the installation of the generator in a suitable location.

[0023] —The housing 8 is installed and fixed by four foot holes at the bottom, and number 9 is a lifting rod used to lift the motor.

[0024] Junction box 6 is located on one side of the housing 8. Junction box 6 enables the generator to output power.

[0025] The connection structure includes a first conductive busbar assembly 4, a second conductive busbar assembly 2, and a third conductive busbar assembly 3 sequentially connected between the parallel ring assembly 1 and the junction box 6. The inner end of the first conductive busbar assembly 4 is electrically connected to the parallel ring assembly 1. The first conductive busbar assembly 4 includes multiple sequentially arranged lead-out conductive busbars. The parallel ring assembly 1 includes multiple parallel rings, each corresponding to a lead-out conductive busbar.

[0026] The second conductive busbar assembly 2 is electrically connected to the outer end of the first conductive busbar assembly 4. The second conductive busbar assembly 2 includes multiple sequentially arranged connecting conductive busbars, with each connecting conductive busbar corresponding to a lead-out conductive busbar.

[0027] The third conductive busbar assembly 3 is electrically connected at one end to the second conductive busbar assembly 2 and at the other end to the junction box 6. The third conductive busbar assembly 3 includes multiple conductive busbars of the junction box 6 arranged in sequence, with each conductive busbar corresponding to one of the conductive busbars of the junction box 6.

[0028] The above sequential connection enables modular production and manufacturing, reducing costs and significantly improving the conductivity of the busbars. Compared to cables, the weight is greatly reduced, and modular production also reduces costs.

[0029] The parallel ring and the lead-out conductive busbar, the connecting conductive busbar and the lead-out conductive busbar, and the connecting conductive busbar and the conductive busbar of the junction box 6 are connected together by a movable connecting assembly 5. The movable connecting assembly 5 includes a mating bolt and nut, and the bolt is fitted with a washer and a spring washer.

[0030] The use of bolts and nuts is flexible and convenient, allows for a reasonable spatial layout, and makes the structure more stable.

[0031] Multiple grooves are provided at one end of the lead-out conductive busbar and the other end connecting to the conductive busbar. Multiple diagonal strips are provided at the other end connecting to the conductive busbar and at one end of the conductive busbar in the junction box. The diagonal strips and grooves are designed to correspond one-to-one. During installation, the conductive busbar has a certain weight, and misalignment may occur during the connection process. To address this, grooves and diagonal strips are designed on the conductive busbar to achieve quick and reliable connection, preventing misalignment.

[0032] The connection principle of the connection structure is as follows: First, the lead-out conductive bus is welded to the parallel ring of the stator winding 7. Then, the connecting conductive bus is fixed to the lead-out conductive bus using bolts, washers, spring washers and nuts. Finally, the connecting conductive bus is connected to the conductive bus of the junction box 6 using bolts, washers, spring washers and nuts, and finally connected to the junction box 6.

[0033] The stator winding parallel ring to junction box conductive busbar connection structure of this utility model connects the stator winding parallel ring to the junction box conductive busbar through multiple sequentially connected conductive busbars. The structure is more stable, the spatial layout is more reasonable, the overall weight of the wind turbine is reduced, the equipment cost is lower, the risk can be effectively reduced, the reliable operation of the generator can be guaranteed, and the after-sales maintenance cost can be reduced.

[0034] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not covered by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0035] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A connection structure for a stator winding connected in parallel to a terminal block conductor busbar, comprising: Casing (8); A stator winding (7) is disposed inside the housing (8); a parallel ring assembly (1) is installed on the stator winding (7); Junction box (6) is located on one side of the housing (8); The characteristic feature is that the connection structure includes: The first conductive bus assembly (4) has its inner end electrically connected to the parallel ring assembly (1); The second conductive bus assembly (2) is electrically connected to the outer end of the first conductive bus assembly (4); The third conductive bus assembly (3) is electrically connected at one end to the second conductive bus assembly (2) and at the other end to the junction box (6).

2. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 1, characterized in that, The first conductive bus assembly (4) includes a plurality of sequentially arranged lead-out conductive buses; the parallel ring assembly (1) includes a plurality of parallel rings, each parallel ring corresponding to one of the lead-out conductive buses.

3. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 2, characterized in that, The second conductive bus assembly (2) includes a plurality of sequentially arranged connecting conductive buses, each of which corresponds one-to-one with the lead-out conductive bus.

4. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 3, characterized in that, The third conductive bus assembly (3) includes multiple sequentially arranged junction box (6) conductive buses, and the connecting conductive buses correspond one-to-one with the junction box (6) conductive buses.

5. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 4, characterized in that, The parallel ring is connected to the lead-out conductive busbar, the connecting conductive busbar is connected to the lead-out conductive busbar, and the connecting conductive busbar is connected to the conductive busbar of the junction box (6) via a movable connecting component (5).

6. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 5, characterized in that, The movable connection assembly (5) includes a bolt and a nut that cooperate with each other; the bolt is fitted with a washer and a spring washer.

7. The connection structure of the stator winding parallel loop to the terminal box conductor busbar according to claim 6, characterized in that, One end of the lead-out conductive busbar and one end of the connecting conductive busbar are respectively provided with multiple grooves; the other end of the connecting conductive busbar and one end of the conductive busbar of the junction box (6) are provided with multiple oblique strips; the oblique strips and the grooves are designed to correspond one-to-one.

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