High-voltage wire holder assembly, traction converter comprising high-voltage wire holder assembly and urban rail vehicle comprising high-voltage wire holder assembly

Abstract

The utility model discloses a high-voltage wire holder assembly and a traction converter and an urban rail vehicle comprising the same, the high-voltage wire holder assembly comprises a first mounting seat and a second mounting seat which are arranged perpendicular to each other, the first mounting seat and the second mounting seat are both provided with a plurality of insulators, each insulator is provided with a three-phase alternating current side copper bar used for mounting a wiring terminal, and the three-phase alternating current side copper bar is provided with a plurality of three-phase alternating current side copper bars. The plurality of wiring terminals are used for realizing high-voltage cable connection and are positioned on the same side of the first mounting seat or the second mounting seat; when the wiring terminal is assembled on the three-phase alternating current side copper bar, the insulator is located between the first mounting base and the three-phase alternating current side copper bar and between the second mounting base and the three-phase alternating current side copper bar, so that the first mounting base and the second mounting base are prevented from being conducted with the three-phase alternating current side copper bar. The wire holder has the characteristics of compact structure, small size, high stability, convenience in assembly and disassembly and the like, and solves the problems that the wire holder occupies too large space and is difficult to disassemble in the limited space of the urban rail traction converter powered by four three-phase alternating current motors under the condition of meeting safety.

Description

Technical Field

[0001] This utility model relates to the field of rail transit equipment technology, specifically to a high-voltage terminal block assembly and a traction converter and urban rail vehicle containing the same. Background Technology

[0002] With the rapid development of urban rail transit equipment, urban rail traction converters are also being optimized for smaller size and weight. As the core converter module, it bears the heavy responsibility of powering four three-phase AC motors, and the terminal block on the AC output side, as an important component connecting the converter module and the motor, is of paramount importance in terms of safety and reliability.

[0003] The terminal block on the AC output side is responsible for transmitting power to four three-phase AC motors, requiring twelve channels for connecting high-voltage cables. Current sensors are also needed to monitor the current in these channels and prevent overcurrent. The limited internal space of the urban rail traction converter and the numerous components in the terminal block, coupled with the cumbersome disassembly process, place stringent requirements on its structural layout. Therefore, a high-voltage terminal block assembly is urgently needed to address these issues. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned problems in the prior art by providing a high-voltage terminal block assembly with a compact structure, high stability and small size, as well as a traction converter and urban rail vehicle containing the assembly.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A high-voltage terminal block assembly includes a first mounting base and a second mounting base arranged perpendicularly to each other. Each of the first and second mounting bases has multiple insulators, and each insulator has a three-phase AC side copper busbar for mounting terminals to achieve high-voltage cable connection. All terminals are located on the same side of the first or second mounting base. When the terminals are mounted on the three-phase AC side copper busbar, the insulators are positioned between the first and second mounting bases and the three-phase AC side copper busbar, and between the second mounting base and the three-phase AC side copper busbar, to prevent the first and second mounting bases from conducting with the three-phase AC side copper busbar.

[0007] As a further improvement of this utility model, both the first mounting base and the second mounting base are provided with multiple current sensors, which are used to detect current values.

[0008] As a further improvement of this utility model, the three-phase AC side copper busbar on the first mounting base includes a first U-phase copper busbar, a second U-phase copper busbar, a first W-phase copper busbar, a second W-phase copper busbar, a third U-phase copper busbar, and a fourth U-phase copper busbar arranged in sequence; wherein, the first U-phase copper busbar, the second U-phase copper busbar, the third U-phase copper busbar, and the fourth U-phase copper busbar are all connected to the current sensor.

[0009] As a further improvement of this utility model, the three-phase AC side copper busbar on the second mounting base includes a third W-phase copper busbar, a first V-phase copper busbar, a second V-phase copper busbar, a third V-phase copper busbar, a fourth V-phase copper busbar, and a fourth W-phase copper busbar arranged in sequence; wherein, the first V-phase copper busbar, the second V-phase copper busbar, the third V-phase copper busbar, and the fourth V-phase copper busbar are all connected to the current sensor.

[0010] As a further improvement of this utility model, the first mounting base, the second mounting base, and the three-phase AC side copper busbar are all provided with through holes for mounting insulators. Both ends of the insulator are provided with threaded holes. One end of the insulator is connected to the first mounting base or the second mounting base through a third mounting bolt, and the other end of the insulator is connected to the three-phase AC side copper busbar through a second mounting bolt.

[0011] As a further improvement of this utility model, each end of the first mounting base and the second mounting base is provided with two through holes for the first mounting bolts.

[0012] As a further improvement of this utility model, both the first mounting base and the second mounting base are provided with threaded holes for mounting current sensors, and the two sides of the current sensor are respectively fixed on the first mounting base or the second mounting base by mounting screws.

[0013] As a further improvement of this utility model, both ends of the three-phase AC side copper busbar are drilled with through holes for installing wiring terminals.

[0014] As a general technical concept, this utility model also provides a traction converter, including the above-mentioned high-voltage terminal block assembly.

[0015] As a general technical concept, this utility model also provides an urban rail vehicle, including four three-phase AC motors and the aforementioned traction converter.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model discloses a high-voltage terminal block assembly and a traction converter and urban rail vehicle containing it. The main structure of the high-voltage terminal block assembly is formed by a first mounting base and a second mounting base arranged perpendicularly to each other. Furthermore, multiple insulators are provided on both the first and second mounting bases, and each insulator is provided with a three-phase AC side copper busbar for mounting terminals. Multiple terminals are located on the same side of the first or second mounting base, reducing the overall installation space of the high-voltage terminal block assembly and improving the convenience of high-voltage cable connection. When the terminals are assembled on the three-phase AC side copper busbar, the insulators are located between the first mounting base and the three-phase AC side copper busbar, and between the second mounting base and the three-phase AC side copper busbar, providing physical insulation and preventing the first and second mounting bases from conducting with the three-phase AC side copper busbar, effectively ensuring the safety of the terminal block assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural principle of the high-voltage terminal block assembly in a specific embodiment of this utility model;

[0019] Figure 2 This is a front view schematic diagram of the high-voltage terminal block assembly in a specific embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the left-side structure of the high-voltage terminal block assembly in a specific embodiment of this utility model;

[0021] Legend: 1. First mounting base; 2. Second mounting base; 3. Insulator; 4. Current sensor; 5. Three-phase AC copper busbar; 6. First mounting bolt; 7. Second mounting bolt; 8. Mounting screw; 9. Third mounting bolt; 511. Phase U-phase copper busbar 1; 512. Phase U-phase copper busbar 2; 513. Phase W-phase copper busbar 1; 514. Phase W-phase copper busbar 2; 515. Phase U-phase copper busbar 3; 516. Phase U-phase copper busbar 4; 521. Phase W-phase copper busbar 3; 522. Phase V-phase copper busbar 1; 523. Phase V-phase copper busbar 2; 524. Phase V-phase copper busbar 3; 525. Phase V-phase copper busbar 4; 526. Phase W-phase copper busbar 4. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Example

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the high-voltage terminal block assembly of this utility model includes a first mounting base 1 and a second mounting base 2 arranged perpendicularly to each other. Each mounting base 1 and the second mounting base 2 is provided with six insulators 3, and each insulator 3 is provided with a three-phase AC side copper busbar 5 for mounting terminals to achieve high-voltage cable connection. The three-phase AC side copper busbar 5 uses irregularly shaped copper busbars, which are staggered, so that multiple terminals are located on the same side of the first mounting base 1 or the second mounting base 2. When the terminals are assembled on the three-phase AC side copper busbar 5, the insulators 3 are located between the first mounting base 1 and the three-phase AC side copper busbar 5, and between the second mounting base 2 and the three-phase AC side copper busbar 5, to prevent the first mounting base 1 and the second mounting base 2 from conducting with the three-phase AC side copper busbar 5.

[0027] In this embodiment, the main structure of the high-voltage terminal block assembly is formed by a first mounting base 1 and a second mounting base 2 arranged perpendicularly to each other. Furthermore, multiple insulators 3 are provided on both the first mounting base 1 and the second mounting base 2, and each insulator 3 is equipped with a three-phase AC side copper busbar 5 for mounting terminals. All terminals are located on the same side of the first mounting base 1 or the second mounting base 2, reducing the overall installation space of the high-voltage terminal block assembly and improving the convenience of high-voltage cable connection. When the terminals are assembled onto the three-phase AC side copper busbar 5, the insulators 3 are located between the first mounting base 1 and the three-phase AC side copper busbar 5, and between the second mounting base 2 and the three-phase AC side copper busbar 5, providing physical insulation and preventing conduction between the first mounting base 1 and the second mounting base 2 and the three-phase AC side copper busbar 5, effectively ensuring the safety of the terminal block assembly.

[0028] like Figure 2 As shown, both the first mounting base 1 and the second mounting base 2 are equipped with multiple current sensors 4, which are used to detect current values.

[0029] like Figure 1 As shown, the three-phase AC side copper busbar 5 on the first mounting base 1 includes a first U-phase copper busbar 511, a second U-phase copper busbar 512, a first W-phase copper busbar 513, a second W-phase copper busbar 514, a third U-phase copper busbar 515, and a fourth U-phase copper busbar 516 arranged sequentially. The first U-phase copper busbar 511, the second U-phase copper busbar 512, the third U-phase copper busbar 515, and the fourth U-phase copper busbar 516 are all connected to the current sensor 4 to realize U-phase current detection.

[0030] like Figure 1 As shown, the three-phase AC side copper busbar 5 on the second mounting base 2 includes a third W-phase copper busbar 521, a first V-phase copper busbar 522, a second V-phase copper busbar 523, a third V-phase copper busbar 524, a fourth V-phase copper busbar 525, and a fourth W-phase copper busbar 526 arranged sequentially. The first V-phase copper busbar 522, the second V-phase copper busbar 523, the third V-phase copper busbar 524, and the fourth V-phase copper busbar 525 are all connected to the current sensor 4 to achieve V-phase current detection. The high-voltage terminal assembly of this embodiment can simultaneously meet the wiring requirements of twelve high-voltage cables.

[0031] In this embodiment, the first mounting base 1, the second mounting base 2, and the three-phase AC side copper busbar 5 are all provided with through holes for mounting the insulator 3. Both ends of the insulator 3 are provided with threaded holes. One end of the insulator 3 is connected to the first mounting base 1 or the second mounting base 2 through the third mounting bolt 9, and the other end of the insulator 3 is connected to the three-phase AC side copper busbar 5 through the second mounting bolt 7. Thus, the connection and fixation of the mounting base, the insulator 3, and the three-phase AC side copper busbar 5 are realized.

[0032] like Figure 2As shown in this embodiment, both ends of the first mounting base 1 and the second mounting base 2 are respectively provided with two through holes for the first mounting bolts 6. The first mounting base 1 and the second mounting base 2 together form the main structure of the high-voltage terminal block assembly. There is no connection between the two. The high-voltage terminal block assembly is installed on the traction converter through the first mounting bolts 6 at both ends of the first mounting base 1 and the second mounting base 2.

[0033] In this embodiment, both the first mounting base 1 and the second mounting base 2 are provided with threaded holes for mounting the current sensor 4. The current sensor 4 is fixed to the first mounting base 1 or the second mounting base 2 on both sides by mounting screws 8. The first U-phase copper busbar 511, the second U-phase copper busbar 512, the third U-phase copper busbar 515, the fourth U-phase copper busbar 516, the first V-phase copper busbar 522, the second V-phase copper busbar 523, the third V-phase copper busbar 524, and the fourth V-phase copper busbar 525 are all inserted into the current sensor 4 to achieve real-time detection of the U and V phase currents. Mounting the current sensor 4 on two separate mounting bases reduces the axial installation space and better adapts to the internal space of the traction converter.

[0034] In this embodiment, both ends of the three-phase AC side copper busbar 5 are drilled with through holes for installing wiring terminals.

[0035] In this embodiment, a traction converter is also provided, including the high-voltage terminal block assembly described above.

[0036] In this embodiment, an urban rail vehicle is also provided, including four three-phase AC motors and the aforementioned traction converter. The high-voltage terminal block assembly can be perfectly adapted inside the corresponding traction converter, enabling the output current of the converter module to be transmitted to the four three-phase AC motors.

[0037] In this embodiment, the high-voltage terminal block assembly, located on the AC output side of the traction converter, serves as a crucial component connecting the converter module and the motor. While ensuring its safety and reliability, the installation space of the high-voltage terminal block assembly is reduced, and a current sensor 4 is installed for current monitoring. This results in a simple structure and low cost. Simultaneously, by employing an irregularly shaped and staggered installation method for the three-phase AC side copper busbars 5, the difficulty of disassembling and installing the three-phase AC side copper busbars 5 is reduced. Within the existing structural dimensions, the reduced installation space of the high-voltage terminal block assembly facilitates the miniaturization of the converter module and the arrangement of components. This solves the problem of the mismatch between the volume of the three-phase AC side high-voltage terminal block assembly and the space of the traction converter in existing urban rail transit technology, providing a simple, feasible, and low-cost design solution for the miniaturization of integrated converter modules.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high-voltage terminal assembly, characterized by The high-voltage terminal block assembly comprises a first mounting seat (1) and a second mounting seat (2) arranged perpendicularly to each other, a plurality of insulators (3) are arranged on the first mounting seat (1) and the second mounting seat (2), a three-phase alternating current side copper bar (5) for mounting a terminal is arranged on each insulator (3) to realize high-voltage cable connection, and a plurality of terminals are arranged on the same side of the first mounting seat (1) or the second mounting seat (2); when the terminal is assembled on the three-phase alternating current side copper bar (5), the insulator (3) is arranged between the first mounting seat (1) and the three-phase alternating current side copper bar (5) and between the second mounting seat (2) and the three-phase alternating current side copper bar (5) to prevent the first mounting seat (1) and the second mounting seat (2) from being in conduction with the three-phase alternating current side copper bar (5).

2. The high-voltage terminal assembly of claim 1, wherein A plurality of current sensors (4) are arranged on the first mounting seat (1) and the second mounting seat (2), and the current sensors (4) are used for detecting current values.

3. The high-voltage terminal assembly of claim 2, wherein, The three-phase alternating current side copper bar (5) on the first mounting seat (1) comprises a first U-phase copper bar (511), a second U-phase copper bar (512), a first W-phase copper bar (513), a second W-phase copper bar (514), a third U-phase copper bar (515) and a fourth U-phase copper bar (516) arranged in sequence; wherein the first U-phase copper bar (511), the second U-phase copper bar (512), the third U-phase copper bar (515) and the fourth U-phase copper bar (516) are connected with the current sensor (4).

4. The high-voltage terminal assembly of claim 3, wherein, The three-phase alternating current side copper bar (5) on the second mounting seat (2) comprises a third W-phase copper bar (521), a first V-phase copper bar (522), a second V-phase copper bar (523), a third V-phase copper bar (524), a fourth V-phase copper bar (525) and a fourth W-phase copper bar (526) arranged in sequence; wherein the first V-phase copper bar (522), the second V-phase copper bar (523), the third V-phase copper bar (524) and the fourth V-phase copper bar (525) are connected with the current sensor (4).

5. The high-voltage terminal assembly of any one of claims 1 to 4, wherein, The first mounting seat (1), the second mounting seat (2) and the three-phase alternating current side copper bar (5) are all provided with through holes for mounting the insulator (3), both ends of the insulator (3) are provided with threaded holes, one end of the insulator (3) is connected with the first mounting seat (1) or the second mounting seat (2) through a third mounting bolt (9), and the other end of the insulator (3) is connected with the three-phase alternating current side copper bar (5) through a second mounting bolt (7).

6. The high-voltage terminal assembly of any one of claims 1 to 4, wherein, Both ends of the first mounting seat (1) and the second mounting seat (2) are respectively provided with through holes of two first mounting bolts (6).

7. The high-voltage terminal assembly of any one of claims 2 to 4, wherein, The first mounting seat (1) and the second mounting seat (2) are both provided with threaded holes for mounting the current sensor (4), and the current sensor (4) is fixed on the first mounting seat (1) or the second mounting seat (2) through mounting screws (8) on both sides of the current sensor (4).

8. The high-voltage terminal assembly of any one of claims 1 to 4, wherein, Both ends of the three-phase alternating current side copper bar (5) are punched with through holes for mounting the terminal.

9. A traction converter, characterized in that The high-voltage terminal block assembly comprises any one of claims 1 to 8.

10. A city vehicle, characterized by The traction converter comprises four three-phase alternating current motors and the high-voltage terminal block assembly of claim 9.

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