Stator winding connection structure, generator stator and generator
By using aluminum connection parts in wind turbines to connect to the lead wire and cable of the stator winding, the problem of high cost of existing connecting pipes is solved, and cost reduction and connection stability are improved.
Patent Information
- Application Number
- CN202420355129.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The cost of the stator winding connecting pipe in existing wind turbines is high, mainly due to the different metal materials at both ends of the connecting pipe, resulting in increased costs.
The two connecting parts made of aluminum are connected to the lead wire and cable of the stator winding, and the connection is achieved through an aluminum connecting pipe or an aluminum nose. The locking structure ensures the stability of the connection.
The cost of the stator winding connection structure is reduced, the connection problems caused by different materials are avoided, and the connection stability and reliability are improved.
Smart Images
Figure CN222721212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stator winding connection, in particular to a stator winding connection structure, a generator stator and a generator. Background Art
[0002] At present, the stator winding and cable in the wind turbine are generally made of different metal materials. The stator winding is usually connected to the cable through a straight tube type connecting pipe, wherein the material of one end of the connecting pipe is the same as the material of the stator winding of the generator, both are aluminum, and the material of the other end is the same as the material of the cable, both are copper. In addition, the cable mostly uses Category 5 conductor copper cable with a small bending radius, which makes the cost of the connecting pipe relatively high. Utility Model Content
[0003] The main purpose of the utility model is to provide a stator winding connection structure, a generator stator and a generator, aiming to solve the problem of high cost of existing connecting pipes.
[0004] To achieve the above-mentioned purpose, the utility model proposes a stator winding connection structure for a generator stator, wherein the stator winding connection structure includes two connection parts, one of which is used to connect to a lead-out wire of a stator winding, and the other is used to connect to a cable, and the material of the connection part includes aluminum.
[0005] Optionally, the stator winding connection structure comprises an aluminum connection tube;
[0006] Wherein, the two connecting parts include two ends of the aluminum connecting pipe.
[0007] Optionally, the aluminum connecting pipe is an aluminum connecting elbow.
[0008] Optionally, the bending angle of the aluminum connecting elbow is α, wherein 90°≤α≤135°.
[0009] Optionally, α=90°.
[0010] Optionally, the connecting portion is crimped to the lead wire; and / or,
[0011] The connecting portion is crimped and connected to the cable.
[0012] Optionally, the stator winding connection structure includes:
[0013] Two aluminum noses, respectively connecting the lead wire and the cable; and,
[0014] A locking structure, comprising a locking bolt and a locking nut, wherein the locking bolt cooperates with the locking nut to lock the two aluminum noses;
[0015] Wherein, the connecting portion includes the aluminum nose.
[0016] The utility model also provides a generator stator, which includes the above-mentioned stator winding connection structure, and the stator winding connection structure includes two connecting parts. Among the two connecting parts, one of the connecting parts is used to connect with the lead-out wire of the stator winding, and the other connecting part is used to connect with the cable. The material of the connecting part includes aluminum.
[0017] Optionally, the generator stator comprises a cable, and the material of the cable comprises aluminum; and / or,
[0018] The generator stator includes lead wires, and the material of the lead wires includes aluminum.
[0019] In addition, the utility model also provides a generator, which includes the above-mentioned generator stator.
[0020] In the technical solution of the utility model, two connecting parts are provided to respectively connect the lead wires of the stator winding and the cable, so that the stator winding connecting structure can connect the lead wires of the stator winding and the cable. At the same time, the connecting parts are all made of aluminum material to reduce the cost of the stator winding connecting structure, thereby solving the problem of high cost of the existing connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the main structure of an embodiment of the generator electronics provided by the utility model;
[0023] Figure 2 for Figure 1 A front view structural schematic diagram of another embodiment of the stator winding connection structure.
[0024] Description of Figure Numbers:
[0025]
[0026]
[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0031] At present, the stator winding and cable in the wind turbine are generally made of different metal materials. The stator winding is usually connected to the cable through a straight tube type connecting pipe, wherein the material of one end of the connecting pipe is the same as the material of the stator winding of the generator, both are aluminum, and the material of the other end is the same as the material of the cable, both are copper. In addition, the cable mostly uses Category 5 conductor copper cable with a small bending radius, which makes the cost of the connecting pipe relatively high.
[0032] In view of this, the utility model provides a stator winding connection structure for a generator stator, aiming to solve the problem of high cost of existing connection pipes. Figure 1 and Figure 2 This is a structural schematic diagram of the generator stator provided by the utility model.
[0033] See also Figure 1 and Figure 2 The stator winding connection structure 100 includes two connection parts 1. Among the two connection parts 1, one of the connection parts 1 is used to connect with the lead-out wire 200 of the stator winding, and the other connection part 1 is used to connect with the cable 300. The material of the connection part 1 includes aluminum.
[0034] In the technical solution of the utility model, two connecting parts 1 are provided to respectively connect the lead wire 200 of the stator winding and the cable 300, so that the stator winding connection structure 100 can connect the lead wire 200 of the stator winding and the cable 300. At the same time, the connecting parts 1 are all made of aluminum material to reduce the cost of the stator winding connection structure 100, thereby solving the problem of high cost of the existing connecting pipe.
[0035] Furthermore, there are multiple types of the stator winding connection structure 100. For example, the stator winding connection structure 100 can be a single part or a combination of multiple parts. The present invention does not limit this. Specifically, in one embodiment of the present invention, the stator winding connection structure 100 includes an aluminum connecting tube 2, wherein the two connecting parts 1 include two ends of the aluminum connecting tube 2. In this way, the lead wire 200 of the stator winding is connected to the cable 300 by directly forming the aluminum connecting tube 2. Compared with multiple parts, this can not only improve the connection strength of the stator winding connection structure 100, but also avoid subsequent assembly processes, thereby facilitating the quick connection of the lead wire 200 and the cable 300.
[0036] The aluminum connecting tube 2 has various shapes, for example, it can be a straight tube or a curved tube, etc., and the utility model does not limit this. However, due to the large axial size of the straight tube, it needs to occupy more axial space at the end of the stator, and its axial direction is generally consistent with the direction of the lead wire 200, and perpendicular to the winding direction of the cable 300, so that the cable 300 needs to be bent 90° in the limited axial space after being connected to the straight tube, which cannot meet the minimum bending radius requirement of the cable 300, resulting in a reduction in the service life of the cable 300 or damage to the cable 300. For this reason, in one embodiment of the utility model, the aluminum connecting tube 2 is an aluminum connecting curved tube. In this way, the aluminum connecting tube 2 adopts a curved tube so that the stator winding connection structure 100 can be adapted to the extension direction of the lead wire 200 and the winding direction of the cable 300, so as to reduce the bending degree of the cable 300, so that the cable 300 can meet the minimum bending radius requirement, thereby avoiding damage to the cable 300.
[0037] Furthermore, the bending angle of the aluminum connecting elbow is α, wherein 90°≤α≤135°, so as to minimize the bending degree of the cable 300, so that the stator winding connection structure 100 can meet the minimum bending radius requirement of the cable 300. It is understandable that the bending angle α of the aluminum connecting elbow can be 90°, 105° or 120°, and of course can also be any value in the above range, and the utility model does not limit this. Specifically, in this embodiment, α=90°, so that the two ends of the aluminum connecting tube 2 can be respectively consistent with the extension direction of the lead wire 200 and the winding direction of the cable 300, avoiding the bending of the cable 300, thereby helping to strengthen the connection between the stator winding connection structure 100 and the lead wire 200 and the cable 300.
[0038] In another embodiment of the present invention, please refer to Figure 2 The stator winding connection structure 100 includes two aluminum noses 3 and a locking structure 4. The two aluminum noses 3 are respectively connected to the lead-out wire 200 and the cable 300. The locking structure 4 includes a locking bolt 41 and a locking nut 42. The locking bolt 41 cooperates with the locking nut 42 to lock the two aluminum noses 3. The connection part 1 includes the aluminum nose 3. Thus, the lead-out wire 200 and the cable 300 are connected by setting the two aluminum noses 3. At the same time, the two aluminum noses 3 are connected by setting the locking bolt 41 and the locking nut 42, so that the stator winding connection structure 100 can connect the lead-out wire 200 and the cable 300. It should be noted that since the two aluminum noses 3 are connected by the locking structure 4, relative to the aluminum connecting tube 2, the locking structure 4 may be loosened when used for a long time. Therefore, after a period of time, the locking structure 4 needs to be locked to prevent the locking structure 4 from loosening.
[0039] There are many ways to connect the connecting part 1 and the lead wire 200. The connecting part 1 and the lead wire 200 can be connected by welding or screw connection, etc. The utility model does not limit this. Specifically, in this embodiment, the connecting part 1 and the lead wire 200 are crimped. Since the contact between the crimped contact and the wire is very close, it can not only effectively prevent the contact from loosening and falling off, but also greatly reduce the contact resistance. At the same time, there is no arc and spark during connection. Therefore, the crimping connection is used, which not only helps to improve the stability and reliability of the connection between the connecting part 1 and the lead wire 200, but also helps to improve the safety during operation.
[0040] There are many ways to connect the connecting part 1 and the cable 300. The connecting part 1 and the cable 300 can be connected by welding or screw connection, etc. The utility model does not limit this. Specifically, in this embodiment, the connecting part 1 and the cable 300 are crimped. Since the contact between the crimped contact and the wire is very close, it can not only effectively prevent the contact from loosening and falling off, but also greatly reduce the contact resistance. At the same time, there is no arc and spark during connection. Therefore, the crimping connection is used, which not only helps to improve the stability and reliability of the connection between the connecting part 1 and the cable 300, but also helps to improve the safety during operation.
[0041] It should be noted that the above two related technical features: "the connecting part 1 is crimped and connected to the lead wire 200" and "the connecting part 1 is crimped and connected to the cable 300" can be set either one or at the same time. Obviously, setting them at the same time will have a better effect.
[0042] In addition, to achieve the above purpose, the utility model further provides a generator stator 1000, including the above stator winding connection structure 100. It should be noted that the structure of the stator winding connection structure 100 in the generator stator 1000 can refer to the above embodiment of the stator winding connection structure 100, which will not be repeated here; since the above stator winding connection structure 100 is used in the generator stator 1000 provided by the utility model, the embodiment of the generator stator 1000 provided by the utility model includes all technical solutions of all embodiments of the above stator winding connection structure 100, and the technical effects achieved are also exactly the same, which will not be repeated here.
[0043] In some embodiments of the present invention, the generator stator 1000 includes a cable 300, and the material of the cable 300 includes aluminum. Thus, the cable 300 is made of aluminum. On the one hand, the material of the cable 300 is consistent with the material of the connecting portion 1, so as to avoid corrosion or high resistance at the connection between the connecting portion 1 and the cable 300. On the other hand, the cost of the cable 300 can be reduced, thereby helping to reduce the cost of the generator stator 1000. Of course, in other embodiments, the material of the cable 300 can also be copper, etc., and the present invention does not limit this.
[0044] In some embodiments of the present invention, the generator stator 1000 includes a lead wire 200, and the material of the lead wire 200 includes aluminum. Thus, the lead wire 200 is made of aluminum. On the one hand, the material of the lead wire 200 is consistent with the material of the connecting portion 1, so as to avoid rust or high resistance at the connection between the connecting portion 1 and the lead wire 200. On the other hand, the cost of the stator winding can be reduced, thereby helping to reduce the cost of the generator stator 1000. Of course, in other embodiments, the material of the lead wire 200 can also be copper, etc., and the present invention does not limit this.
[0045] It should be noted that the above two related technical features: "the material of the cable 300 includes aluminum" and "the material of the lead wire 200 includes aluminum" can be set either one or both, and the present utility model does not limit this.
[0046] The utility model also provides a generator, including the above-mentioned generator stator 1000. It should be noted that the structure of the generator stator 1000 in the generator can refer to the above-mentioned embodiment of the generator stator 1000, which will not be repeated here; since the above-mentioned generator stator 1000 is used in the generator provided by the utility model, the embodiment of the generator provided by the utility model includes all technical solutions of all embodiments of the above-mentioned generator stator 1000, and the technical effects achieved are also completely the same, which will not be repeated here.
[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A stator winding connection structure, used for a generator stator, characterized in that: The stator winding connection structure includes two connection parts, one of which is used to connect to the lead-out wire of the stator winding, and the other is used to connect to the cable. The material of the connection parts includes aluminum.
2. The stator winding connection structure according to claim 1, characterized in that: The stator winding connection structure includes an aluminum connection tube; Wherein, the two connecting parts include two ends of the aluminum connecting pipe.
3. The stator winding connection structure according to claim 2, characterized in that: The aluminum connecting pipe is an aluminum connecting elbow.
4. The stator winding connection structure according to claim 3, characterized in that: The bending angle of the aluminum connecting elbow is α, wherein 90°≤α≤135°.
5. The stator winding connection structure according to claim 4, characterized in that: α＝90°。 6. The stator winding connection structure according to claim 1, characterized in that: The connecting portion is crimped and connected to the lead wire; and / or, The connecting portion is crimped and connected to the cable.
7. The stator winding connection structure according to claim 1, characterized in that: The stator winding connection structure comprises: Two aluminum noses, respectively connecting the lead wire and the cable; and, A locking structure, comprising a locking bolt and a locking nut, wherein the locking bolt cooperates with the locking nut to lock the two aluminum noses; Wherein, the connecting portion includes the aluminum nose.
8. A generator stator, characterized in that: It comprises the stator winding connection structure as claimed in any one of claims 1 to 7.
9. The generator stator according to claim 8, characterized in that: The generator stator includes a cable, and the material of the cable includes aluminum; and / or, The generator stator includes lead wires, and the material of the lead wires includes aluminum.
10. A generator, characterized in that: Comprising the generator stator as claimed in claim 9.