Locomotive auxiliary converter cabinet

Abstract

The invention provides a locomotive auxiliary converter cabinet. The locomotive auxiliary converter cabinet is designed by mainly utilizing the input and output module, the auxiliary module, the charger module, the transformer, the electric reactor, the metal cabinet body, the fan module and the control module, according to the electrical compatibility of the charger module and the auxiliary module, the modules have interchangeability and identity while the independence of the modules is ensured, and the reliability of the modules is improved. Moreover, the weight of a single module is lighter, and the maintainability of the module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical design, and in particular to a locomotive auxiliary converter cabinet. Background Art

[0002] Locomotive auxiliary converters are mainly used in the traction system of rail transit vehicles. They are a subdivision of converter products, which refers to converters that can convert AC power into DC power and DC power into AC power to provide auxiliary capabilities. Auxiliary converters have the advantages of safety and reliability, high conversion efficiency, small size, and high degree of integration. They are widely used in rail transit systems such as subways, EMUs, high-speed railways, and urban rail trains.

[0003] The auxiliary inverter of a locomotive involves many components, which are more trivial than the traction inverter and the auxiliary inverter. In addition, this mode is often made into a double backup redundant circuit to ensure that one circuit can still work if one circuit fails, making the components more complicated. This requires that its maintainability must be good, and it is required to have good maintainability under the premise of ensuring electrical performance, heat dissipation performance, etc. The overall weight of the existing solution is too large to meet the requirements of lightweighting the entire vehicle.

[0004] The existing auxiliary converter cabinet adopts a scattered device installation design. The overall circuit board is placed at the top of the cabinet, and the other electrical parts are installed inside the cabinet, which makes it impossible to perform parallel installation and assembly. Due to the cabinet volume restrictions between different projects, electrical parts can be used universally, but structural parts are basically not universal. The cooling ducts of different cabinets are quite different, so there is no universal solution.

[0005] Therefore, it is necessary to optimize the device arrangement and structure to solve the problems existing in the prior art. Summary of the invention

[0006] According to the technical problems raised above, a locomotive auxiliary converter cabinet is provided. The present invention mainly utilizes input and output modules, auxiliary modules, charger modules, transformers, reactors, metal cabinets, fan modules and control modules to design a locomotive auxiliary converter cabinet. According to the electrical compatibility of the charger module and the auxiliary module, the independence of the modules is ensured, and the modules are interchangeable and identical. Moreover, the weight of a single module is also lighter, which also increases its maintainability.

[0007] The technical means adopted by the present invention are as follows:

[0008] A locomotive auxiliary converter cabinet includes: an input and output module, an auxiliary module, a charger module, a transformer, a reactor, a metal cabinet, a fan module and a control module, wherein:

[0009] The input-output module integrates the input-output structure in the locomotive auxiliary converter and is used to connect the input incoming wires and output wiring in the locomotive auxiliary converter cabinet, so that the positions of the incoming and outgoing wires of the entire electrical cabinet are consistent and centralized;

[0010] The auxiliary module is downwardly compatible with electrical cabinets of different powers and is used to convert direct current into three-phase electricity that meets the use requirements;

[0011] The charger module is backward compatible with electrical cabinets of different powers and is used to convert high voltage into low voltage electricity that meets the requirements;

[0012] The transformer is used to adjust the circuit voltage;

[0013] The reactor is used to ensure the smooth operation of the circuit, eliminate harmonics, improve the impact resistance, and reduce unnecessary resonance;

[0014] The metal cabinet is used to install and fix the input and output modules, auxiliary modules, charger modules, transformers, reactors, fan modules and control modules;

[0015] The fan module is used to dissipate heat for the locomotive auxiliary converter cabinet through air suction and wind throwing operations;

[0016] The control module is used to centrally collect the control information of each electrical component and perform overall control.

[0017] Furthermore, the modules in the locomotive auxiliary converter cabinet are connected by soft copper busbars.

[0018] Furthermore, the metal cabinet is provided with an open cabin and a duct cabin, the duct cabin is connected to the air inlet and the open cabin, the open cabin is connected to the air outlet and the duct cabin, and the fan module absorbs air from the air inlet and dissipates heat through the centrifugal fan.

[0019] Furthermore, the air duct cabin is arranged at the front end of the open cabin, the front end inside the air duct cabin solves the heat dissipation of the auxiliary module and the charger module, and the rear end is provided with a duct circulation power source-a fan. The hot air after the front end is heated does not affect the heat dissipation effect of the reactor.

[0020] Furthermore, the transformer is installed inside the open cabin.

[0021] Furthermore, the metal cabinet is provided with an input line hole and an output line hole, and the input and output lines of each module are uniformly connected through the input line hole and the output line hole.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The locomotive auxiliary converter cabinet provided by the present invention integrates electrical principles, and the components in the entire cabinet are divided into a front-end input module, an auxiliary module, a charger module, a reactor, a transformer, a rear-end output module, a control module, etc. After the more complicated components are designed on the module, it is ensured as much as possible not to stack them, and maintainability is guaranteed.

[0024] The locomotive auxiliary converter cabinet provided by the present invention modularizes the complex electrical installation, and can synchronously assemble each module at different workstations, effectively improving the assembly efficiency of the entire auxiliary cabinet. All external lines are uniformly output from the module end, including the main circuit output and the control circuit output. The centralized output facilitates the wiring and subsequent maintenance of the entire converter cabinet.

[0025] The locomotive auxiliary converter cabinet provided by the present invention has a compact overall layout structure, which reduces the external dimensions of the main circuit power unit under the same power condition, thereby reducing the external dimensions of the converter and playing a role in weight reduction. The sheet metal manufacturing of the present invention can also adopt a modular design, a unified design of the heat dissipation duct, and is compatible with the design requirements of most rail transit auxiliary cabinets. Improve design efficiency and reduce labor costs.

[0026] Based on the above reasons, the present invention can be widely promoted in the fields of mechanical design and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a structural schematic diagram of the locomotive auxiliary converter cabinet in the present invention.

[0029] Figure 2 This is a circuit diagram of the locomotive auxiliary converter cabinet before integration in the present invention.

[0030] Figure 3 It is a structural diagram of the wind turbine cabin and the open cabin in the present invention.

[0031] Figure 4 This is a structural diagram of a locomotive auxiliary converter cabinet in Example 1 of the present invention.

[0032] Figure 5 This is a structural diagram of a locomotive auxiliary converter cabinet in Example 2 of the present invention.

[0033] In the figure: 1. Input and output module; 2. Auxiliary module; 3. Charger module; 4. Transformer; 5. Reactor; 6. Metal cabinet; 7. Fan module; 8. Control module. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] like Figure 1 As shown, the present invention provides a locomotive auxiliary converter cabinet, characterized in that it includes: an input and output module 1, an auxiliary module 2, a charger module 3, a transformer 4, a reactor 5, a metal cabinet 6, a fan module 7 and a control module 8, wherein:

[0042] The input-output module 1 integrates the input-output structure in the locomotive auxiliary converter and is used to connect the input incoming line and output wiring in the locomotive auxiliary converter cabinet, so that the input and output line positions of the entire electrical cabinet are consistent and centralized; in special circumstances, the module can be divided into two different modules and distributed in corresponding positions of the electrical cabinet to facilitate the layout and wiring of the entire vehicle.

[0043] The input and output module 1 only needs 4 fixing bolts to fix to the cabinet, and the electrical connection with other modules is connected by soft copper busbar, which can effectively eliminate installation errors. This module is a flexible assembly module in this cabinet. According to the actual situation of the project, the size of the auxiliary cabinet and the input and output position of the inlet and outlet lines are determined. In other projects on the same platform, the modules can be split or integrated to meet the needs of different cabinet sizes and input and output position changes.

[0044] The auxiliary module 2 is downwardly compatible with electrical cabinets of different powers and is used to convert direct current into three-phase electricity that meets the use requirements;

[0045] The charger module 3 is downwardly compatible with electrical cabinets of different powers and is used to convert high voltage into low voltage electricity that meets the requirements;

[0046] The transformer 4 is used to adjust the circuit voltage;

[0047] The reactor 5 is used to ensure the smooth operation of the circuit, eliminate harmonics, improve the impact resistance, and reduce unnecessary resonance;

[0048] Due to different cabinet sizes and air outlet methods, the reactor 5 is not limited to being installed in an open cabin position.

[0049] The metal cabinet 6 is used to install and fix the input and output module 1, the auxiliary module 2, the charger module 3, the transformer 4, the reactor 5, the fan module 7 and the control module 8;

[0050] The fan module 7 is used to dissipate heat for the locomotive auxiliary converter cabinet by suction and wind throwing operations;

[0051] The control module 8 is used to centrally collect the control information of each electrical component and perform overall control.

[0052] The size and location of the control module 8 may vary depending on the project or requirement.

[0053] In specific implementation, as a preferred embodiment of the present invention, the modules in the locomotive auxiliary converter cabinet are connected by soft copper busbars.

[0054] In specific implementation, as a preferred embodiment of the present invention, the metal cabinet 6 is provided with an open cabin and a duct cabin, the duct cabin is connected to the air inlet and the open cabin, the open cabin is connected to the air outlet and the duct cabin, and the fan module 7 draws air from the air inlet and dissipates heat by means of a centrifugal fan.

[0055] During implementation, air is drawn in from the right air inlet, and the cold air enters the bottom air duct to dissipate heat. The fan inhales air from the bottom and throws it to the transformer compartment to dissipate heat for the transformer and reactor, and discharges hot air at the air outlet.

[0056] In specific implementation, as a preferred embodiment of the present invention, the air duct cabin is arranged at the front end of the open cabin, the front end inside the air duct cabin solves the heat dissipation of the auxiliary module 2 and the charger module 3, and the rear end is provided with a duct circulation power source-a fan, and the hot air after the front end is heated does not affect the heat dissipation effect of the reactor 5.

[0057] In specific implementation, as a preferred embodiment of the present invention, the transformer is installed inside an open cabin.

[0058] In specific implementation, as a preferred embodiment of the present invention, the metal cabinet 6 is provided with an input line hole and an output line hole, and the input and output lines of each module are uniformly connected through the input line hole and the output line hole.

[0059] During implementation, the input-output module 1, the auxiliary module 2, the charger module 3, the transformer 4, the reactor 5, the fan module 7 and the control module 8 may adopt a double-backup redundant configuration.

[0060] Example 1

[0061] like Figure 1 As shown, the present invention provides a locomotive auxiliary converter cabinet. In this embodiment, if two sets of auxiliary cabinets are combined into one and a battery is required, the specific configuration is detailed in Figure 4 This embodiment modularizes the complex electrical installation, and can simultaneously assemble each module at different workstations, effectively improving the assembly efficiency of the entire auxiliary cabinet.

[0062] Example 2

[0063] In this embodiment, if an auxiliary cabinet is required and a battery is required, the input and output positions are not on one side. For detailed configuration, see Figure 5 . All external lines are uniformly connected from the module end, including the main circuit lines and the control circuit lines. The centralized lines facilitate the wiring and subsequent maintenance of the entire converter cabinet. The overall layout is compact, and the dimensions of the main circuit power unit are reduced under the same power condition, thereby reducing the dimensions of the converter and reducing the weight. The modular design of the same platform includes not only the power module, but also the sheet metal production of the entire cabinet. The overall layout structure is consistent, and the unified design of the heat dissipation duct is compatible with the design requirements of most rail transit auxiliary cabinets. Improve design efficiency and reduce labor costs.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A locomotive auxiliary converter cabinet, characterized in that: include: Input and output module (1), auxiliary module (2), charger module (3), transformer (4), reactor (5), metal cabinet (6), fan module (7) and control module (8), wherein: The input-output module (1) integrates the input-output structure in the locomotive auxiliary converter and is used to connect the input incoming wires and output wiring in the locomotive auxiliary converter cabinet, so that the positions of the incoming and outgoing wires of the entire electrical cabinet are consistent and centralized; The auxiliary module (2) is capable of being downwardly compatible with electrical cabinets of different powers and is used to convert direct current into three-phase electricity that meets usage requirements; The charger module (3) is downwardly compatible with electrical cabinets of different powers and is used to convert high voltage into low voltage electricity that meets the requirements; The transformer (4) is used to adjust the circuit voltage; The reactor (5) is used to ensure the smooth operation of the circuit, eliminate harmonics, improve the impact resistance, and reduce unnecessary resonance; The metal cabinet (6) is used to install and fix the input and output module (1), the auxiliary module (2), the charger module (3), the transformer (4), the reactor (5), the fan module (7) and the control module (8); The fan module (7) is used to dissipate heat for the locomotive auxiliary converter cabinet through air suction and air throwing operations; The control module (8) is used to centrally collect the control information of each electrical component and perform overall control.

2. The locomotive auxiliary converter cabinet according to claim 1, characterized in that: The modules in the locomotive auxiliary converter cabinet are connected by soft copper busbars.

3. The locomotive auxiliary converter cabinet according to claim 1, characterized in that: The metal cabinet (6) is provided with an open cabin and an air duct cabin, the air duct cabin is connected to the air inlet and the open cabin, the open cabin is connected to the air outlet and the air duct cabin, and the fan module (7) absorbs air from the air inlet and then dissipates heat through the centrifugal fan.

4. The locomotive auxiliary converter cabinet according to claim 3, characterized in that: The air duct cabin is arranged at the front end of the open cabin, the front end of the air duct cabin solves the heat dissipation of the auxiliary module (2) and the charger module (3), and the rear end is provided with a duct circulation power source-a fan, so that the hot air after the front end is heated does not affect the heat dissipation effect of the reactor (5).

5. The locomotive auxiliary converter cabinet according to claim 1, characterized in that: The transformer is installed inside the open cabin.

6. The locomotive auxiliary converter cabinet according to claim 1, characterized in that: The metal cabinet (6) is provided with an input line hole and an output line hole, and the input and output lines of each module are uniformly connected through the input line hole and the output line hole.

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