Insulated wiring device and permanent magnet synchronous all-in-one machine
By designing an insulating wiring device and using the groove structure to increase the creepage distance, the problem of leakage caused by moisture and dust on the surface of the insulating part in the prior art is solved, and the improvement of electrical performance and space utilization is achieved.
Patent Information
- Application Number
- CN202421503891.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In the prior art, due to the small creepage distance and the surface of the insulator has moisture and dust, large leakage currents are easily generated, which in turn causes problems such as carbonization or even short circuit on the surface of the insulator.
An insulated wiring device is designed, including an insulated main body, a overlapping copper bar, a first wiring nose and a second wiring nose. By opening grooves on the installation body, an insulated wiring structure and an installation structure are formed, and the creepage distance between the first wiring nose and the second wiring nose is increased to avoid leakage.
It effectively avoids leakage, improves the electrical performance of the surface of the insulator, avoids carbonization and short circuit of the surface of the insulator, and improves the space utilization rate of the permanent magnet synchronous machine.
Smart Images
Figure CN222735374U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of permanent magnet synchronous all-in-one machine, in particular to an insulating wiring device and a permanent magnet synchronous all-in-one machine. Background Art
[0002] At present, the permanent magnet synchronous machine for mining has the situation that the motor is rotating and the three-phase power of the whole machine is cut off. The motor rotor rotates, and the motor stator is a three-phase symmetrical AC winding. According to the law of electromagnetic induction, the three-phase AC winding of the stator will still induce three-phase AC, causing damage to the electrical components in the inverter. It is necessary to add an insulating wiring device between the motor terminal and the inverter device. After the whole machine is powered off, the connection with the inverter device is disconnected through the insulating device. The terminal voltage level of the insulating device is 3300V. When installing, it is necessary to consider the electrical clearance and creepage distance with the explosion-proof housing and other electrical components. Due to the poor environmental conditions in the coal mine, humid air, and more coal dust, if the electrical clearance between the exposed live parts or between them and the ground is too small, it is easy to break down and discharge. If the creepage distance is too small, the insulating parts supporting the exposed parts are themselves water-absorbent and have dust attached to the surface, which will reduce the surface resistance of the insulating parts, generate a large leakage current, and carbonize the insulating surface, eventually leading to a short circuit; and the space utilization rate is low. Utility Model Content
[0003] The technical problem solved by the utility model is how to improve the problem in the prior art that a large leakage current is easily generated due to a small creepage distance and moisture and dust on the surface of the insulating part, which in turn causes carbonization of the insulating part surface and even a short circuit.
[0004] The embodiments of the present invention can be implemented as follows:
[0005] The utility model provides an insulating wiring device, comprising:
[0006] An insulating body, on which a mounting body is disposed, wherein a groove is formed on the mounting body, and an insulating wiring structure and a mounting structure are respectively formed on both sides of the groove; a first mounting surface is formed on the mounting structure, and a second mounting surface is formed on the insulating wiring structure, and the first mounting surface and the second mounting surface are coplanar;
[0007] A lap copper busbar, arranged on the first mounting surface;
[0008] A first wiring lug is connected to an end of the overlapping copper bar away from the groove and is electrically connected to the overlapping copper bar;
[0009] A second wiring lug is detachably connected to one end of the overlapping copper bar near the groove and is electrically connected to the overlapping copper bar;
[0010] Wherein, a matching structure is provided on the second mounting surface, and when the second wiring lug is removed from the overlapping copper busbar, the second wiring lug can be detachably connected to the insulating wiring structure through the matching structure.
[0011] Optionally, there are multiple installation bodies, and in two adjacent installation bodies, two first installation surfaces are arranged at intervals.
[0012] Optionally, the heights of the plurality of mounting bodies gradually decrease in a preset direction to form a stepped structure.
[0013] Optionally, a plurality of the mounting bodies are integrally formed.
[0014] Optionally, the depth of the groove is smaller than the distance between two adjacent first mounting surfaces.
[0015] Optionally, the groove penetrates the installation body in a thickness direction of the installation body.
[0016] Optionally, in the width direction of the groove, the width of the first mounting surface is greater than the width of the second mounting surface, and the width of the second mounting surface is greater than the width of the groove.
[0017] Optionally, the matching structure is a threaded hole opened on the insulating wiring structure.
[0018] Optionally, a mounting hole is provided on the first mounting surface, and the overlapping copper busbar is assembled on the first mounting surface through the mounting hole.
[0019] A permanent magnet synchronous integrated machine comprises a frequency converter component, a motor through-wall terminal and the above-mentioned insulating wiring device, wherein one of the first wiring nose and the second wiring nose is connected to the frequency converter component, and the other is connected to the motor through-wall terminal.
[0020] The insulating wiring device and the permanent magnet synchronous all-in-one machine provided by the utility model have the following beneficial effects compared with the prior art:
[0021] When the insulating wiring device is applied to a permanent magnet synchronous all-in-one machine, the first wiring nose and the second wiring nose are respectively connected to the inverter device and the motor through-wall terminal to form a complete machine circuit. When power is required to be cut off, the second wiring nose is removed from the overlapping copper busbar and connected to the insulating wiring structure, so that the first wiring nose and the second wiring nose can be disconnected, and the circuit can be disconnected. When the second wiring nose is connected to the insulating wiring structure, since a groove is provided between the insulating wiring structure and the mounting structure, the creepage distance between the first wiring nose and the second wiring nose can be increased when the distance between the first wiring nose and the second wiring nose is increased little or not, effectively avoiding leakage, thereby improving the problem in the prior art that a large leakage current is easily generated due to the small creepage distance and moisture and dust on the surface of the insulating part, which causes carbonization or even short circuit on the surface of the insulating part. At the same time, the space in the permanent magnet synchronous all-in-one machine can be effectively utilized to improve space utilization. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 A schematic diagram of the structure of an insulated wiring device provided in an embodiment of the present application;
[0024] Figure 2 It is a schematic diagram of the partial structure of the permanent magnet synchronous all-in-one machine provided in the embodiment of the present application.
[0025] Icons: 10-permanent magnet synchronous integrated machine; 11-insulating wiring device; 12-inverter device; 13-motor wall terminal; 100-insulating body; 101-installation body; 102-groove; 110-insulating wiring structure; 111-second installation surface; 112-matching structure; 120-installation structure; 121-first installation surface; 122-installation hole; 200-lap copper busbar; 300-first wiring nose; 400-second wiring nose. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0029] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.
[0030] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0031] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0032] See also Figure 1 In the embodiment of the present application, an insulating wiring device 11 is provided, and the insulating wiring device 11 is applied to electrical equipment, such as a high-voltage permanent magnet synchronous integrated machine 10 for mining. When the electrical equipment needs to be powered off, the insulating wiring device 11 can be used to connect two wiring noses to achieve the insulation setting of the two wiring noses. In this embodiment, the insulating wiring device 11 can improve the problem in the prior art that a large leakage current is easily generated due to a small creepage distance and moisture and dust on the surface of the insulating part, thereby causing carbonization of the surface of the insulating part or even a short circuit.
[0033] In this embodiment, the insulating wiring device 11 includes an insulating body 100, a lap copper busbar 200, a first wiring nose 300 and a second wiring nose 400. The insulating body 100 is provided with a mounting body 101, a groove 102 is provided on the mounting body 101, and an insulating wiring structure 110 and a mounting structure 120 are formed on both sides of the groove 102; a first mounting surface 121 is formed on the mounting structure 120, and a second mounting surface 111 is formed on the insulating wiring structure 110, and the first mounting surface 121 and the second mounting surface 111 are coplanar. It can also be regarded as that by providing the groove 102 on the mounting body 101, the insulating wiring structure 110 and the mounting structure 120 are formed on the mounting body 101. The lap copper busbar 200 is provided on the first mounting surface 121. The first wiring nose 300 is connected to the end of the lap copper busbar 200 away from the groove 102 and is electrically connected to the lap copper busbar 200. The second wiring lug 400 is detachably connected to one end of the overlapping copper busbar 200 near the groove 102 and is electrically connected to the overlapping copper busbar 200. The first wiring lug 300 and the second wiring lug 400 can be respectively connected to two electronic parts or terminal interfaces in the electrical device, so that the electrical connection between the two electronic parts or terminal interfaces is achieved when the first wiring lug 300 and the second wiring lug 400 are both connected to the overlapping copper busbar 200. Among them, a matching structure 112 is provided on the second mounting surface 111. When the second wiring lug 400 is removed from the overlapping copper busbar 200, the second wiring lug 400 can be detachably connected to the insulating wiring structure 110 through the matching structure 112.
[0034] That is to say, when the electrical equipment needs to be powered off, the second wiring lug 400 is removed from the copper busbar 200 and connected to the insulating wiring structure 110, so that the first wiring lug 300 and the second wiring lug 400 can be disconnected and insulated, and the circuit can be disconnected. It is worth noting that the circuit can be disconnected when the second wiring lug 400 is removed from the copper busbar 200; the second wiring lug 400 is connected to the insulating wiring structure 110, so that the second wiring lug 400 can be stably placed in the electrical equipment while ensuring the circuit is disconnected, so that the second wiring lug 400 can be prevented from being lost, and no other structure or container is needed to carry the second wiring lug 400. Furthermore, when the second wiring nose 400 is connected to the insulating wiring structure 110, since a groove 102 is provided between the insulating wiring structure 110 and the mounting structure 120, the creepage distance between the first wiring nose 300 and the second wiring nose 400 can be increased when the distance between the first wiring nose 300 and the second wiring nose 400 is increased less or not increased, effectively avoiding leakage, thereby improving the problem in the prior art that a large leakage current is easily generated due to a small creepage distance and moisture and dust on the surface of the insulating part, which causes carbonization or even short circuit on the surface of the insulating part. At the same time, the space in the permanent magnet synchronous all-in-one machine 10 can be effectively utilized to improve space utilization.
[0035] Optionally, there are multiple installation bodies 101, and in two adjacent installation bodies 101, the two first installation surfaces 121 are arranged at intervals. That is to say, multiple circuits in the electrical device can be connected through the first wiring lug 300, the overlapping copper busbar 200 and the second wiring lug 400 on the installation body 101, and when any circuit needs to be disconnected, the circuit can be disconnected by removing the second wiring lug 400. The two first installation surfaces 121 are arranged at intervals to increase the creepage distance between the two adjacent overlapping copper busbars 200 to prevent leakage.
[0036] Furthermore, when multiple installation bodies 101 are provided, the removed second wiring nose 400 can be connected to the corresponding insulating wiring structure 110 to avoid installation errors when resetting the second wiring nose 400, thereby reducing the maintenance difficulty of the electrical equipment and improving the maintenance efficiency.
[0037] Furthermore, the heights of the multiple installation bodies 101 gradually decrease in a preset direction and form a stepped structure. The multiple installation bodies 101 are presented as a stepped structure, which can facilitate the operation of the second wiring lug 400 on any installation body 101, reducing the difficulty of operation. In addition, it is also convenient for the operator to intuitively view the current status of the first wiring lug 300 and the second wiring lug 400, further reducing the difficulty of operation and facilitating maintenance and inspection.
[0038] It should be understood that in other embodiments, the multiple installation bodies 101 may be arranged in other ways, such as arranging the multiple first installation surfaces 121 on the multiple installation bodies 101 in a cyclic manner of one high and one low.
[0039] In addition, in this embodiment, a plurality of installation bodies 101 are integrally formed, which can reduce the difficulty of manufacturing the insulating body 100 and realize the integration of the insulating body 100, thereby facilitating the assembly and maintenance of the insulating wiring device 11 in the electrical equipment.
[0040] In this embodiment, the depth of the groove 102 is less than the distance between two adjacent first mounting surfaces 121. On the basis of increasing the creepage distance of the first wiring lug 300 and the second wiring lug 400 by the groove 102, the depth of the groove 102 is set to be less than the distance between the two adjacent first mounting surfaces 121, so as to avoid the groove 102 extending to the top surface of another mounting body 101 and affecting the creepage distance between the first wiring lug 300 and the second wiring lug 400 on another mounting body 101. On the other hand, the strength of the insulating wiring structure 110 and the mounting structure 120 can also be ensured, and the overall strength of the insulating body 100 can be improved.
[0041] In addition, in this embodiment, the groove 102 penetrates the installation body 101 in the thickness direction of the installation body 101. It can ensure that the installation structure 120 and the insulating wiring structure 110 are spaced apart, thereby effectively improving the creepage distance between the second wiring nose 400 and the overlapping copper bus 200, and improving the problem in the prior art that due to the small creepage distance and moisture and dust on the surface of the insulating part, a large leakage current is easily generated, which causes carbonization of the surface of the insulating part or even a short circuit.
[0042] In this embodiment, in the width direction of the groove 102, the width of the first mounting surface 121 is greater than the width of the second mounting surface 111, and the width of the second mounting surface 111 is greater than the width of the groove 102. The first mounting surface 121 has a larger width, which can facilitate the installation of the overlapping copper bus 200, while the second mounting surface 111 has a smaller width, which can reduce the overall volume of the insulating body 100 and improve space utilization.
[0043] In this embodiment, the matching structure 112 is a threaded hole provided on the insulating wiring structure 110. That is, the second wiring nose 400 can be connected to the threaded hole by a bolt passing through the second wiring nose 400, so as to realize a detachable connection between the second wiring nose 400 and the insulating wiring structure 110. It should be understood that in other embodiments, the matching structure 112 can also be a buckle provided on the insulating wiring structure 110.
[0044] In this embodiment, a mounting hole 122 is provided on the first mounting surface 121, and the overlapping copper busbar 200 is assembled on the first mounting surface 121 through the mounting hole 122. Generally, the mounting hole 122 can also be set as a threaded hole.
[0045] Based on the above-mentioned insulating wiring device 11, please refer to Figure 2 In this embodiment, a permanent magnet synchronous integrated machine 10 is also provided, which includes a frequency converter device 12, a motor through-wall terminal 13 and the above-mentioned insulating wiring device 11. Among them, one of the first wiring nose 300 and the second wiring nose 400 is connected to the frequency converter device 12, and the other is connected to the motor through-wall terminal 13, thereby forming a complete machine circuit. When it is necessary to power off the complete machine circuit, the second wiring nose 400 is removed from the overlapping copper bus 200 to achieve power off of the complete machine circuit; however, the second wiring nose 400 is connected to the insulating wiring structure 110 to achieve the insulation setting of the first wiring nose 300 and the second wiring nose 400 in the permanent magnet synchronous integrated machine 10. Correspondingly, if it is necessary to conduct the complete machine circuit, the second wiring nose 400 is removed from the insulating wiring structure 110 and then connected to the overlapping copper bus 200.
[0046] In summary, when the insulating wiring device 11 is applied to the permanent magnet synchronous integrated machine 10, the first wiring nose 300 and the second wiring nose 400 are respectively connected to the inverter device 12 and the motor through-wall terminal 13 to form a complete machine circuit. When the power needs to be cut off, the second wiring nose 400 is removed from the overlapping copper bus 200 and connected to the insulating wiring structure 110, so that the first wiring nose 300 and the second wiring nose 400 can be disconnected, and the circuit can be disconnected. When the second wiring nose 400 is connected to the insulating wiring structure 110, since a groove 102 is provided between the insulating wiring structure 110 and the mounting structure 120, the creepage distance between the first wiring nose 300 and the second wiring nose 400 can be increased when the distance between the first wiring nose 300 and the second wiring nose 400 is increased less or not, effectively avoiding leakage, thereby improving the problem in the prior art that a large leakage current is easily generated due to a small creepage distance and moisture and dust on the surface of the insulating part, thereby causing carbonization of the surface of the insulating part or even a short circuit. At the same time, the space in the permanent magnet synchronous all-in-one machine 10 can be effectively utilized to improve space utilization.
[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An insulated wiring device, characterized in that: include: An insulating body, on which a mounting body is disposed, wherein a groove is formed on the mounting body, and an insulating wiring structure and a mounting structure are respectively formed on both sides of the groove; a first mounting surface is formed on the mounting structure, and a second mounting surface is formed on the insulating wiring structure, and the first mounting surface and the second mounting surface are coplanar; A lap copper busbar, arranged on the first mounting surface; A first wiring lug is connected to an end of the overlapping copper bar away from the groove and is electrically connected to the overlapping copper bar; A second wiring lug is detachably connected to one end of the overlapping copper bar near the groove and is electrically connected to the overlapping copper bar; Wherein, a matching structure is provided on the second mounting surface, and when the second wiring lug is removed from the overlapping copper busbar, the second wiring lug can be detachably connected to the insulating wiring structure through the matching structure.
2. The insulated wiring device according to claim 1, characterized in that: There are multiple installation bodies, and in two adjacent installation bodies, the two first installation surfaces are arranged at intervals.
3. The insulated wiring device according to claim 2, characterized in that: The heights of the plurality of installation bodies gradually decrease in a preset direction and form a stepped structure.
4. The insulated wiring device according to claim 2, characterized in that: The plurality of installation bodies are integrally formed.
5. The insulated wiring device according to claim 2, characterized in that: The depth of the groove is smaller than the distance between two adjacent first mounting surfaces.
6. The insulated wiring device according to claim 1, characterized in that: The groove penetrates the installation body in a thickness direction of the installation body.
7. The insulated wiring device according to claim 6, characterized in that: In the width direction of the groove, the width of the first mounting surface is greater than the width of the second mounting surface, and the width of the second mounting surface is greater than the width of the groove.
8. The insulated wiring device according to claim 1, characterized in that: The matching structure is a threaded hole opened on the insulating wiring structure.
9. The insulated wiring device according to claim 1, characterized in that: The first mounting surface is provided with a mounting hole, and the overlapping copper bus is assembled on the first mounting surface through the mounting hole.
10. A permanent magnet synchronous all-in-one machine, characterized in that: The insulating wiring device comprises a frequency converter component and a motor through-wall terminal as described in any one of claims 1 to 9, wherein one of the first wiring nose and the second wiring nose is connected to the frequency converter component, and the other is connected to the motor through-wall terminal.