CN213937571U - Generator lead wire connecting piece, generator stator and generator - Google Patents
Generator lead wire connecting piece, generator stator and generator Download PDFInfo
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- CN213937571U CN213937571U CN202022963499.XU CN202022963499U CN213937571U CN 213937571 U CN213937571 U CN 213937571U CN 202022963499 U CN202022963499 U CN 202022963499U CN 213937571 U CN213937571 U CN 213937571U
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Abstract
An embodiment of the utility model provides a generator lead-out wire connecting piece, generator stator and generator relates to power generation facility technical field, and generator lead-out wire connecting piece includes adapter, the material of adapter one end and the stator winding of generator are same kind of metal material, and the material of the other end and the material of cable are same kind of metal material, adapter's one end be suitable for with stator winding connects, the other end be suitable for with cable junction, so that stator winding with the cable switches on, but contactless. The embodiment of the utility model provides a generator lead-out wire connecting piece makes stator winding and cable switch on through using crossover sub to connect stator winding and cable, nevertheless contactless, avoids the stator winding and the cable lug connection of different metal materials to appear electrochemical corrosion, and then increases resistance, has improved connected mode's reliability, has improved the security of electrical apparatus.
Description
Technical Field
The utility model relates to a power generation facility technical field especially relates to a generator lead-out wire connecting piece, generator stator and generator.
Background
The double-fed wind driven generator is a wind driven generator which is widely applied at present and consists of a wound asynchronous generator with a stator winding directly connected with a fixed-frequency three-phase power grid and a bidirectional voltage source converter arranged on the stator winding. The double-fed wind driven generator is a wound-rotor induction generator, is a core component of a variable-speed constant-frequency wind driven generator set, and is also one of key components of localization of the wind driven generator set.
Stator windings of a traditional double-fed wind driven generator are all made of copper, and the density of the copper is higher than that of aluminum, so that the copper is heavy; and the price of copper is greatly floated, and the cost is also higher. In order to improve the product competitiveness and reduce the cost and the weight, the method is imperative. Therefore, the aluminum stator winding can be used as a first choice for replacing the copper stator winding, although the cost is reduced to a certain extent by using the aluminum stator winding, in practical use, the connection part of the aluminum stator winding and a cable is easy to rust, the resistance is large, and the safety of an electric appliance is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a generator lead-out wire connecting piece, generator stator and generator for corrosion and the great problem of resistance appear easily in the junction of the stator winding of solving different metal materials among the prior art and cable.
The embodiment of the utility model provides a generator lead-out wire connecting piece, include:
the material of crossover sub one end and the material of the stator winding of generator are same metal material, and the material of the other end and the material of cable are same metal material, crossover sub's one end be suitable for with stator winding is connected, the other end be suitable for with cable junction, so that stator winding with the cable switches on, but contactless.
According to the utility model discloses a generator lead-out wire connecting piece of embodiment, the material of crossover sub one end with stator winding's material is metallic aluminum, the material of the crossover sub other end with the material of cable is metallic copper.
According to the utility model discloses a generator lead-out wire connecting piece of embodiment, crossover sub is the tubular structure, crossover sub's an pot head establish and the crimping in stator winding, another pot head establish and the crimping in the cable.
According to the utility model discloses a generator lead-out wire connecting piece of embodiment, the internal diameter of crossover sub one end with stator winding's external diameter looks adaptation, the internal diameter of the crossover sub other end with the external diameter looks adaptation of cable, the internal diameter of crossover sub one end is greater than the internal diameter of the other end.
According to the utility model discloses a generator lead-out wire connecting piece of embodiment still includes:
the insulating piece covers the outer surface of the conversion joint.
According to the utility model discloses generator lead-out wire connecting piece of an embodiment, the insulating part is mica tape or insulating cover.
According to the utility model discloses a generator lead-out wire connecting piece, the outer peripheral face interval at crossover sub both ends is provided with a plurality of recesses, the recess is suitable for crossover sub receives radial inside shrink after the extrusion, so that crossover sub's internal surface respectively with stator winding, and cable in close contact with.
According to the utility model discloses a generator lead-out wire connecting piece, crossover sub's internal surface interval is provided with a plurality of annular protruding, the annular protruding be suitable for the crossover sub receives to imbed after the extrusion stator winding with the cable.
The embodiment of the utility model provides a still provide a generator stator, generator stator includes the stator main part, still includes as above generator lead-out wire connecting piece.
An embodiment of the utility model provides a still provides a generator, the generator includes generator rotor and casing, still includes as above generator stator, generator rotor rotationally set up in generator stator, generator stator set up in the casing.
The embodiment of the utility model provides a generator lead-out wire connecting piece makes stator winding and cable switch on through using crossover sub to connect stator winding and cable, nevertheless contactless, avoids the stator winding and the cable lug connection of different metal materials to appear electrochemical corrosion, and then increases resistance, has improved connected mode's reliability, has improved the security of electrical apparatus.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a generator outgoing line connecting piece according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a generator stator according to an embodiment of the present invention.
Reference numerals:
100. copper-aluminum adapter joints; 200. an aluminum stator winding; 300. a copper cable; 400. a stator body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes the generator outgoing line connecting piece, the generator stator and the generator according to the embodiment of the present invention with reference to fig. 1 to 2.
Fig. 1 illustrates the utility model discloses a structure schematic diagram of generator lead-out wire connecting piece, as shown in fig. 1, generator lead-out wire connecting piece includes adapter, and the material of adapter one end and the material of the stator winding of generator are same kind of metal material, and the material of the other end and the material of cable are same kind of metal material, and adapter's one end is suitable for and is connected with stator winding, and the other end is suitable for and cable junction to make stator winding and cable switch on, nevertheless contactless. The stator winding and the cable are connected through the adapter, so that the stator winding is conducted with the cable but not contacted with the cable, electrochemical corrosion caused by direct connection of the stator winding and the cable made of different metal materials is avoided, resistance is increased, reliability of a connection mode is improved, and safety of an electric appliance is improved.
According to the utility model discloses an embodiment, generator lead-out wire connecting piece includes the crossover sub, and the material of crossover sub one end and stator winding's material are metallic aluminum in this embodiment, and the material of the crossover sub other end and the material of cable are metallic copper. In this embodiment, the material of one end of the adapter is aluminum metal, and the material of the other end is copper metal, so we will refer to the adapter as the cu-al adapter 100, the stator winding as the aluminum stator winding 200, and the cable as the copper cable 300. The copper-aluminum adapter 100 is a tubular structure, one end of the copper-aluminum adapter 100 is made of metal aluminum, the other end of the copper-aluminum adapter 100 is made of metal copper, one end of the copper-aluminum adapter 100 is suitable for being connected with an aluminum stator winding 200 of the generator, and the other end of the copper-aluminum adapter 100 is suitable for being connected with a copper cable 300, so that the aluminum stator winding 200 is conducted with the copper cable 300 but is not in contact with the copper cable. Because the material of one end of the copper-aluminum adapter 100 is metal aluminum, one end of the copper-aluminum adapter 100 is connected with the aluminum stator winding 200 of the generator to be the same metal material for contact, the other end of the copper-aluminum adapter 100 is connected with the copper cable 300 to be the same metal material for contact, the potential difference between the two is much smaller than that when devices made of different metal materials are in contact, and the electrochemical corrosion problem of the aluminum stator winding 200 at the connecting position can be effectively prevented.
According to the embodiment of the present invention, one end of the copper-aluminum adapter 100 is disposed and crimped on the aluminum stator winding 200, and the other end is disposed and crimped on the copper cable 300. Because the hardness of the metal aluminum and the metal copper is small and the metal aluminum and the metal copper have certain ductility, after the copper-aluminum adapter 100 is sleeved on the aluminum stator winding 200 and the copper cable 300, the copper-aluminum adapter 100 is stamped by using a stamping tool, the copper-aluminum adapter 100 deforms, and the aluminum stator winding 200 and the copper cable 300 are clamped tightly, so that the conduction of the aluminum stator winding 200 and the copper cable 300 is realized. Compared with a mode of soldering connection, the mode of adopting crimping is simple and convenient to operate and has higher working efficiency.
It should be noted that, since the length of the copper-aluminum adapter 100 is fixed, in order to prevent the end of the aluminum stator winding 200 from contacting the end of the copper cable 300 inside the copper-aluminum adapter 100, the length of the aluminum stator winding 200 and the copper cable 300 entering the copper-aluminum adapter 100 needs to be strictly controlled during connection, so as to ensure that the aluminum stator winding 200 and the copper cable 300 are spaced by a certain distance, and the specific length of the spaced distance is an optimal value reasonably selected according to the resistance value and the distance. Because the inside of the motor is provided with a plurality of stator windings, a plurality of copper-aluminum conversion joints 100 are also needed, and the specific number of the copper-aluminum conversion joints 100 is determined according to the number of the stator windings. After the aluminum stator winding 200 and the copper cable 300 are connected through the copper-aluminum conversion joint 100, the joint of the aluminum stator winding 200 is clamped by using a measuring terminal of a direct current resistance tester, three positions are measured respectively, the reading value is averaged, and the calculated resistance value is compared with the actual measured resistance value, so that whether the connection is qualified or not is determined.
According to the utility model discloses an embodiment, the internal diameter of copper aluminium adapter 100 one end and the external diameter looks adaptation of aluminium system stator winding 200, the internal diameter of the copper aluminium adapter 100 other end and the external diameter looks adaptation of copper cable 300, the internal diameter of copper aluminium adapter 100 one end is greater than the internal diameter of the other end. Since the conductivity of the aluminum is 60% of that of the copper (only copper for electrician), after the copper stator winding is replaced with the aluminum stator winding 200, in order to ensure the same conductivity before and after the change of the type of the stator winding, the diameter of the aluminum stator winding 200 needs to be increased, and thus the inner diameter of one end of the copper-aluminum conversion joint 100 needs to be larger than that of the other end to match the size of the aluminum stator winding 200.
In one embodiment, the generator lead wire connector further comprises an insulator, and the insulator is coated on the outer surface of the copper-aluminum adapter 100. The insulating member is used for insulating the copper-aluminum adapter 100, and in this embodiment, the insulating member is a mica tape wound on the outer surface of the copper-aluminum adapter 100 to coat the copper-aluminum adapter 100 and prevent electric leakage. Of course, the insulating member is not limited thereto, and may be an insulating sleeve or other members having the same function. When the copper-aluminum adapter 100 is connected with the aluminum stator winding 200 and the copper cable 300, in order to ensure that the copper-aluminum adapter 100 is in good contact with the aluminum stator winding 200 and the copper cable 300, respectively, the insulating paint on the outer surfaces of the aluminum stator winding 200 and the copper cable 300 needs to be removed, so that in order to improve the safety of an electric appliance, the length of the insulating part needs to be greater than that of the copper-aluminum adapter 100, so as to ensure that the two ends of the insulating part can coat the aluminum stator winding 200 and the copper cable 300, from which the insulating paint is removed, and prevent electric leakage or short circuit.
According to the utility model discloses an embodiment, the outer peripheral face interval at copper aluminium adapter 100 both ends is provided with a plurality of recesses, and the recess is suitable for and radially inwards contracts after copper aluminium adapter 100 receives the extrusion to make copper aluminium adapter 100's internal surface respectively with aluminium system stator winding 200, and copper cable 300 in close contact with. After the copper-aluminum adapter 100 is provided with the groove, the wall thickness of the groove is smaller than that of the groove, when the copper-aluminum adapter 100 is stamped by using a stamping tool, the groove is aligned to be extruded, and the copper-aluminum adapter 100 is easily extruded and deformed due to the fact that the wall thickness of the groove is thin, so that the aluminum stator winding 200 and the copper cable 300 are clamped tightly. In order to improve the structural strength of the joint of the copper-aluminum adapter 100 and the aluminum stator winding 200 and the copper cable 300, a plurality of annular protrusions are arranged on the inner surface of the copper-aluminum adapter 100 at intervals, and the annular protrusions are suitable for being embedded into the aluminum stator winding 200 and the copper cable 300 after the copper-aluminum adapter 100 is extruded so as to increase the friction force between the copper-aluminum adapter 100 and the aluminum stator winding 200 and the copper cable 300, so that the copper-aluminum adapter 100 cannot be separated from the aluminum stator winding 200 or the copper cable 300 even under higher pressure.
According to the utility model discloses an embodiment, a pot head of copper aluminium crossover sub 100 is established and is pressed in aluminium system stator winding 200, and another pot head is established and tin soldering is connected in copper cable 300. One end of the copper-aluminum conversion joint 100 is in contact with the aluminum stator winding 200, and the contact is between metal aluminum and metal aluminum, so that electrochemical corrosion cannot occur in a dry or wet environment. The contact between the other end of the copper-aluminum adapter 100 and the copper cable 300 is the contact between the metal copper and the metal copper, which does not cause electrochemical corrosion in a dry environment, but does cause corrosion in a high-temperature and humid environment, so that the other end of the copper-aluminum adapter 100 is sleeved and soldered to the copper cable 300, thereby preventing moisture and air from entering the copper cable 300 to cause electrochemical corrosion.
Fig. 2 illustrates a schematic structural diagram of a generator stator of the present invention, as shown in fig. 2, the present invention further provides a generator stator, which includes a stator body 400, and a generator outgoing line connector according to any of the above embodiments.
The utility model also provides a generator, the generator includes generator rotor and casing, still includes above-mentioned embodiment generator stator, generator rotor rotationally sets up in generator stator, generator stator sets up in the casing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A generator lead wire connection member, comprising:
the material of crossover sub one end and the material of the stator winding of generator are same metal material, and the material of the other end and the material of cable are same metal material, crossover sub's one end be suitable for with stator winding is connected, the other end be suitable for with cable junction, so that stator winding with the cable switches on, but contactless.
2. The generator outgoing line connecting piece according to claim 1, wherein a material of one end of the crossover joint and a material of the stator winding are both metallic aluminum, and a material of the other end of the crossover joint and a material of the cable are both metallic copper.
3. The generator lead-out wire connecting piece according to claim 2, wherein the crossover joint is of a tubular structure, one end of the crossover joint is sleeved and crimped on the stator winding, and the other end of the crossover joint is sleeved and crimped on the cable.
4. The generator outlet connection of claim 3, wherein an inner diameter of one end of the crossover fitting is adapted to an outer diameter of the stator winding, an inner diameter of the other end of the crossover fitting is adapted to an outer diameter of the cable, and the inner diameter of one end of the crossover fitting is larger than the inner diameter of the other end of the crossover fitting.
5. The generator outlet connection piece of any one of claims 1 to 4, further comprising:
the insulating piece covers the outer surface of the conversion joint.
6. The generator lead wire connection member according to claim 5, wherein the insulation member is a mica tape or an insulation sleeve.
7. The generator outlet connection member according to any one of claims 1 to 4, wherein a plurality of grooves are provided at intervals on the outer circumferential surfaces of both ends of the crossover joint, the grooves being adapted to be contracted radially inward after the crossover joint is compressed, so that the inner surface of the crossover joint is in close contact with the stator winding and the cable, respectively.
8. The generator outlet connection according to any one of claims 1 to 4, wherein the inner surface of the crossover joint is provided at intervals with a plurality of annular protrusions adapted to embed the stator windings and the cable after the crossover joint is compressed.
9. A generator stator comprising a stator body, characterized by further comprising a generator outlet connection member as claimed in any one of claims 1 to 8.
10. A generator comprising a generator rotor and a housing, and further comprising the generator stator of claim 9, the generator rotor rotatably disposed within the generator stator, the generator stator disposed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963499.XU CN213937571U (en) | 2020-12-09 | 2020-12-09 | Generator lead wire connecting piece, generator stator and generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963499.XU CN213937571U (en) | 2020-12-09 | 2020-12-09 | Generator lead wire connecting piece, generator stator and generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213937571U true CN213937571U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022963499.XU Active CN213937571U (en) | 2020-12-09 | 2020-12-09 | Generator lead wire connecting piece, generator stator and generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213937571U (en) |
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2020
- 2020-12-09 CN CN202022963499.XU patent/CN213937571U/en active Active
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