Laminated busbar of mining flame-proof frequency converter
By adopting a stacked busbar structure in mining inverters, the problems of increased space and circuit confusion caused by cable connections are solved, efficient integration and stable connection of devices are achieved, and the safety and stability of the equipment are improved.
Patent Information
- Application Number
- CN202422930843.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing mining inverters, cables are directly connected to each module, which increases the internal space of the equipment and makes the connection circuit confusing, which easily generates miscellaneous inductance.
The stacked busbar structure is adopted, and the inverter unit, capacitor and rectifier unit are integrated through a detachable busbar connection method to form an inverted "T" shape layout, which reduces the use of cables and improves the integration and stability of device assembly.
It effectively saves the internal space of the inverter, avoids miscellaneous inductance, and improves the safety and stability of the equipment.
Smart Images
Figure CN223451355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mine frequency converter, especially relates to a mine flameproof frequency converter's layering busbar. BACKGROUND
[0002] The main power circuit of the mine frequency converter is: cable input - rectifier unit - capacitor - inverter unit - cable output, and the number of involved devices is more and needs to occupy a certain space in the frequency conversion equipment. 2 -90mm 2 Thus, the bending radius of the cable is increased, and the internal space is increased.
[0003] Therefore, the direct connection of each module by the cable not only increases the internal space of the equipment, but also causes the connection circuit to be disordered and easily lead to the problem of miscellaneous inductance. SUMMARY
[0004] The utility model discloses a mine flameproof frequency converter's layering busbar, which solves the problem of the direct connection of each module by the cable in the prior art, which not only increases the internal space of the equipment, but also causes the connection circuit to be disordered and easily lead to the problem of miscellaneous inductance.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] A mine flameproof frequency converter's layering busbar includes at least one first busbar and at least one second busbar, one side of the first busbar is vertically connected with a first inverter busbar, one side of the second busbar is vertically connected with a second inverter busbar, the first inverter busbar and the second inverter busbar are integrated with an inverter unit, the first busbar and the second busbar are integrated with a plurality of capacitors, adjacent first busbars and second busbars are detachably connected with a first lap joint busbar, one of the first busbars is connected with a second lap joint busbar, the second lap joint busbar is installed with a rectifier busbar, the rectifier busbar, the first inverter busbar and the second inverter busbar are located in the same plane, the rectifier busbar is integrated with a rectifier unit, the first inverter busbar and the second inverter busbar are provided with power cable output connection points, and the rectifier busbar is integrated with a power cable input connection point.
[0007] Preferably, the second lap busbar comprises a first horizontal plate and a first vertical plate, a second horizontal plate and a second vertical plate, and a third horizontal plate and a third vertical plate, which are integrally bent, and the first horizontal plate, the second horizontal plate and the third horizontal plate are fixed in layers; the first horizontal plate, the second horizontal plate and the third horizontal plate are each provided with a first lap portion for connecting the first busbar; and the first vertical plate, the second vertical plate and the third vertical plate are each provided with a second lap portion for connecting the rectifier busbar.
[0008] Preferably, the first busbar comprises a first mounting plate, and a plurality of third lap portions and a plurality of fourth lap portions are formed on both sides of the first mounting plate by bending; and a plurality of fifth lap portions are formed on the first mounting plate by bending, and the fifth lap portions are arranged perpendicularly to the third lap portions and the fourth lap portions.
[0009] Preferably, the second busbar comprises a second mounting plate, a plurality of sixth lap portions are formed on the side surface of the second mounting plate by bending, and a plurality of seventh lap portions are formed on the second mounting plate by bending, and the seventh lap portions are arranged perpendicularly to the sixth lap portions.
[0010] Preferably, the first lap busbar connects adjacent third lap portions or adjacent third lap portions and sixth lap portions.
[0011] Preferably, the fifth lap portions and the seventh lap portions are connected with a third lap busbar, and the third lap busbar connects the first inverter busbar or the second inverter busbar.
[0012] Preferably, the third lap busbar comprises three first connecting plates connected to the first inverter busbar or the second inverter busbar and arranged in layers, and an eighth lap portion is formed on the first connecting plate by bending, and the eighth lap portion connects the fifth lap portion or the seventh lap portion.
[0013] Preferably, the first lap busbar comprises three second connecting plates arranged in layers, and a ninth lap portion is formed on both sides of the second connecting plate by bending.
[0014] Beneficial effects:
[0015] The first lap busbar is detachable, and the adjacent first busbar and second busbar are connected by the first lap busbar, so that the first busbar and the second busbar can be connected or detached according to the working conditions, and when an independent inverter unit is needed to work, the first busbar and the second busbar can be quickly detached, and when the first busbar and the second busbar are conductively connected, the multiple inverter units can work synchronously.
[0016] The busbar is used as the connection basis between the power cable input connection point and the power cable output connection point, and the overall structure is arranged in a T-shaped arrangement structure by arranging the busbar structure, so that the minimum space in the frequency converter can be occupied for arrangement.
[0017] Not only improve the whole frequency converter internal device assembly integration, also avoid the number of internal cable too much miscellaneous inductance, stability and safety are improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is structural schematic view of the embodiment of the utility model;
[0019] Figure 2 It is structural schematic view of the first lapped busbar in the embodiment of the utility model;
[0020] Figure 3 It is structural schematic view of the second lapped busbar in the embodiment of the utility model;
[0021] Figure 4 It is structural schematic view of the third lapped busbar in the embodiment of the utility model;
[0022] Figure 5 It is structural schematic view of the first busbar in the embodiment of the utility model;
[0023] Figure 6 It is structural schematic view of the second busbar in the embodiment of the utility model;
[0024] In Figures 1 to 6 In the embodiment of the utility model, the corresponding relationship of component name or line with drawing number is as follows:
[0025] The first busbar 1, first mounting plate 101, third lapped portion 102, fourth lapped portion 103, fifth lapped portion 104, second busbar 2, second mounting plate 21, sixth lapped portion 22, seventh lapped portion 23, first inverter busbar 3, second inverter busbar 4, inverter unit 5, capacitor 6, first lapped busbar 7, second connecting plate 71, ninth lapped portion 72, second lapped busbar 8, first horizontal plate 81, first vertical plate 82, second horizontal plate 83, second vertical plate 84, third horizontal plate 85, third vertical plate 86, first lapped portion 87, second lapped portion 88, rectifier busbar 9, rectifier unit 10, power cable output connection point 11, power cable input connection point 12, third lapped busbar 13, first connecting plate 131, eighth lapped portion 132. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0027] Referring to Figures 1-6As shown, in an embodiment of the present invention, a stacked busbar for a mining explosion-proof inverter is proposed. It is used to integrate and electrically connect the rectifier unit 10, the inverter unit 5, and the capacitor 6 within the inverter. The purpose is to improve the integration level and reduce the internal space occupied. Some of the circuit principles involved are mature technologies. This embodiment mainly protects the integrated assembly structure of each component. Specifically, it includes at least one first busbar 1 and at least one second busbar 2. A first inverter busbar 3 is vertically connected to one side of the first busbar 1, and a second inverter busbar 4 is vertically connected to one side of the second busbar 2. The first inverter busbar 3 and the second inverter busbar 4 are both integrated with the inverter unit 5. The first busbar 1 and the second busbar 2 are both integrated with multiple capacitors 6. By connecting the corresponding first busbar 1 to the first inverter busbar 3 and the corresponding second busbar 2 to the second inverter busbar 4, the capacitors 6 and the inverter units 5 are electrically connected and arranged in a vertical state, forming unit groups. Each unit group includes a capacitor 6 and an inverter unit 5, which can be independently electrically connected.
[0028] In order to adapt to single-channel or multi-channel use, a first overlapping busbar 7 is detachably connected between the adjacent first busbar 1 and the second busbar 2. The detachable connection method can adjust the conduction line according to the operating conditions to form various forms such as single-channel inverter, two-channel inverter...six-channel inverter, etc.
[0029] Specifically, a second lap busbar 8 is connected to one of the first busbars 1, and a rectifier busbar 9 is installed on the second lap busbar 8. The rectifier busbar 9 is located on the same plane as the first inverter busbar 3 and the second inverter busbar 4, and a rectifier unit 10 is integrated on the rectifier busbar 9. The second lap busbar 8 realizes a conductive connection between the rectifier busbar 9 and the first busbar 1, and the rectifier busbar 9 is located on the same plane as the first inverter busbar 3 and the second inverter busbar 4 after installation, so that the overall stacked busbar has an inverted "T" shape, which can effectively save installation space and adapt to the installation position in the inverter. The internal conductive connection does not use cables, avoiding the situation where the bending of cables increases the occupied space, and at the same time avoids the situation where messy cables cause miscellaneous inductance.
[0030] Specifically, a power cable output connection point 11 is provided on the first inverter busbar 3 and the second inverter busbar 4, and a power cable input connection point 12 is integrated on the rectifier busbar 9; that is, it is only necessary to make power cable input and output connections at the connection points corresponding to the inverter, and no cables are required to be laid inside.
[0031] Specifically, the second lap busbar 8 comprises a first horizontal plate 81 and a first vertical plate 82 which are integrally bent, a second horizontal plate 83 and a second vertical plate 84 which are integrally bent, and a third horizontal plate 85 and a third vertical plate 86 which are integrally bent, the first horizontal plate 81, the second horizontal plate 83 and the third horizontal plate 85 are fixed in layers, wherein the first horizontal plate 81, the second horizontal plate 83 and the third horizontal plate 85 are each provided with a first lap portion 87 for connecting the first busbar 1; the first vertical plate 82, the second vertical plate 84 and the third vertical plate 86 are each provided with a second lap portion 88 for connecting the rectifier busbar 9. By fixing in layers and bending in the connecting direction, the second lap busbar 8 is in a T-shaped structure as a whole, which facilitates the connection from the side of the first busbar 1 to ensure that the rectifier busbar 9 is in the same plane as the first inverter busbar 3 and the second inverter busbar 4, and has good bearing strength.
[0032] The first busbar 1 comprises a first mounting plate 101, and a plurality of third lap portions 102 and a plurality of fourth lap portions 103 are formed on both sides of the first mounting plate 101 by bending, and a plurality of fifth lap portions 104 are formed on the first mounting plate 101 by bending, and the fifth lap portions 104 are arranged perpendicularly to the third lap portions 102 and the fourth lap portions 103; so that the first busbar 1 can be expanded and connected on both sides, and the fifth lap portions 104 are used for mounting and connecting the inverter part.
[0033] The second busbar 2 comprises a second mounting plate 21, and a plurality of sixth lap portions 22 are formed on the side of the second mounting plate 21 by bending, and a plurality of seventh lap portions 23 are formed on the second mounting plate 21 by bending, and the seventh lap portions 23 are arranged perpendicularly to the sixth lap portions 22, the second busbar 2 is generally placed in the last position and does not need to be expanded, and the structure of the extended non-connection side also avoids space occupation, so the independent second busbar 2 is designed as the last one in the multi-way inverter working condition.
[0034] Specifically, the first lap busbar 7 is used for connecting adjacent first busbars 1 or adjacent first busbars 1 and second busbars 2, so that the first lap busbar 7 is connected to adjacent third lap portions 102 or adjacent third lap portions 102 and sixth lap portions 22 during connection.
[0035] In order to ensure that the first busbar 1 and the second busbar 2 are stably connected with the corresponding first inverter busbar 3 and the second inverter busbar 4 and have a supporting effect, a third lap busbar 13 is connected on the fifth lap portion 104 and the seventh lap portion 23, and the third lap busbar 13 is connected with the first inverter busbar 3 or the second inverter busbar 4. Specifically, the third lap busbar 13 includes three first connecting plates 131 connected with the first inverter busbar 3 or the second inverter busbar 4 and arranged in a stack, and an eighth lap portion 132 is formed on the first connecting plate 131 by bending, and the eighth lap portion 132 is connected with the fifth lap portion 104 or the seventh lap portion 23; the overall structure has a bearing property and ensures the stability of the conductive connection.
[0036] Specifically, the first lap busbar 7 includes three second connecting plates 71 arranged in a stack, and ninth lap portions 72 are formed on both sides of the second connecting plate 71 by bending, and the first lap busbar 7 realizes the connection of adjacent two first busbars 1 or adjacent first busbar 1 and second busbar 2, respectively, and needs to be connected through the ninth lap portions 72 on both sides and simultaneously connected at multiple positions.
[0037] The improved stack busbar structure of the embodiment becomes a unit module, and the overall structure has good bearing strength and conductive connection stability, and can be assembled and then assembled into a frequency converter as a whole.
[0038] It should be noted that the corresponding connection positions are connected by bolts, screws and the like to ensure the stability after connection, and the conductive material is preferably copper.
[0039] In the utility model, unless another definite provision and limitation, the terms "mounting", "connecting", "connecting", "fixing" and the like terms should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0040] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0041] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be construed as limiting the scope of the claims.
Claims
1. A laminated busbar for a mine flameproof inverter, characterized by: The invention comprises at least one first busbar (1) and at least one second busbar (2), wherein one side of the first busbar (1) is vertically connected to a first inverter busbar (3), and one side of the second busbar (2) is vertically connected to a second inverter busbar (4), and the first inverter busbar (3) and the second inverter busbar (4) are both integrated with an inverter unit (5), and the first busbar (1) and the second busbar (2) are both integrated with a plurality of capacitors (6); A first overlapping busbar (7) is detachably connected between the adjacent first busbar (1) and second busbar (2); A second lap busbar (8) is connected to one of the first busbars (1), a rectifier busbar (9) is mounted on the second lap busbar (8), and the rectifier busbar (9) and the first inverter busbar (3) and the second inverter busbar (4) are located in the same plane; A rectifier unit (10) is integrated on the rectifier busbar (9); The first inverter busbar (3) and the second inverter busbar (4) are both provided with a power cable output connection point (11), and the rectifier busbar (9) is integrated with a power cable input connection point (12).
2. The laminated busbar of a mine flameproof inverter according to claim 1, characterized in that: The second overlapping busbar (8) comprises a first transverse plate (81) and a first vertical plate (82) that are bent integrally, a second transverse plate (83) and a second vertical plate (84) that are bent integrally, and a third transverse plate (85) and a third vertical plate (86) that are bent integrally, wherein the first transverse plate (81), the second transverse plate (83) and the third transverse plate (85) are stacked and fixedly connected; The first transverse plate (81), the second transverse plate (83) and the third transverse plate (85) are each provided with a first overlap portion (87) for connecting to the first busbar (1); the first vertical plate (82), the second vertical plate (84) and the third vertical plate (86) are each provided with a second overlap portion (88) for connecting to the rectifier busbar (9).
3. The laminated busbar of a mine flameproof inverter according to claim 2, characterized in that: The first busbar (1) comprises a first mounting plate (101), and two sides of the first mounting plate (101) are respectively bent to form a plurality of third overlapping portions (102) and a plurality of fourth overlapping portions (103); A plurality of fifth overlapping portions (104) are formed by bending on the first mounting plate (101), and the fifth overlapping portions (104) are arranged vertically to the third overlapping portions (102) and the fourth overlapping portions (103).
4. The laminated busbar of a mine flameproof inverter according to claim 3, characterized in that: The second busbar (2) comprises a second mounting plate (21), a side surface of the second mounting plate (21) is bent to form a plurality of sixth overlapping portions (22), and a plurality of seventh overlapping portions (23) are bent to form on the second mounting plate (21), and the seventh overlapping portions (23) are arranged perpendicular to the sixth overlapping portions (22).
5. The laminated busbar of a mine flameproof inverter according to claim 4, characterized in that: The first overlapping busbar (7) connects adjacent third overlapping portions (102) or adjacent third overlapping portions (102) and sixth overlapping portions (22).
6. The laminated busbar of a mine flameproof inverter according to claim 4, characterized in that: A third lap busbar (13) is connected to the fifth lap joint (104) and the seventh lap joint (23), and the third lap busbar (13) is connected to the first inverter busbar (3) or the second inverter busbar (4).
7. The laminated busbar of a mine flameproof inverter according to claim 6, characterized in that: The third lap busbar (13) comprises three first connecting plates (131) connected to the first inverter busbar (3) or the second inverter busbar (4) and arranged in a stacked manner, an eighth lap portion (132) being bent and formed on the first connecting plate (131), and the eighth lap portion (132) being connected to the fifth lap portion (104) or the seventh lap portion (23).
8. The laminated busbar of a mine flameproof inverter according to any one of claims 1 to 7, characterized in that: The first overlapping busbar (7) comprises three second connecting plates (71) arranged in a stacked manner, and both sides of the second connecting plates (71) are bent to form a ninth overlapping portion (72).