Current output type power supply device for rail transit operation and maintenance

Abstract

The utility model provides a current output type power supply device for rail transit operation and maintenance. The current output type power supply device comprises a carrying unit, and a control box and a power module which are detachably connected with the carrying unit, the number of the power modules is multiple, the adjacent power modules are stacked, and the carrying unit is provided with plug connectors used for fixing the power modules. The current output type power supply device for rail transit operation and maintenance has the beneficial effects that the control box and the power unit are integrated on the carrying unit to form a direct current output power supply device so as to meet actual use requirements.

Description

Technical Field

[0001] The utility model belongs to the field of power supply devices, and in particular relates to a current output type power supply device used for rail transportation operation and maintenance. Background Art

[0002] The ultra-large DC current output power supply device is a large current generating device specially designed for DC switchgear in urban rail transit power supply systems. The device is mainly used in the functional detection and test projects of DC1500V and DC750V DC switches and protection devices. Because these DC switchgears operate under large current or even ultra-large current conditions for a long time, the detection and test of these DC switchgears requires a power supply device that can output large current. Utility Model Content

[0003] In view of this, the present invention aims to provide a current output type power supply device for rail transit operation and maintenance to meet the actual use requirements in the background technology.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A current output type power supply device for rail transit operation and maintenance, comprising a carrier unit and a control box and a power module detachably connected to the carrier unit;

[0006] A plurality of power modules are provided, and adjacent power modules are stacked and arranged, and a plug-in component for fixing the power modules is provided on the carrier unit.

[0007] Furthermore, a limiting structure is arranged between adjacent power modules, and the limiting structure includes a limiting groove located on the upper surface of the power module and a limiting protrusion located on the lower surface of the power module.

[0008] Furthermore, the connector includes a plug-in column arranged on the carrier unit, a corresponding plug-in hole is arranged on the power module, and a side tightening block is arranged on the power module, and the plug-in column located in the plug-in hole is fixed by the side tightening block.

[0009] Furthermore, a carrying handle is provided on the side of the housing of the power module, and the carrying handle comprises a hollow aluminum tube.

[0010] Furthermore, an upper pallet and a lower pallet are provided on the carrier unit, the control box is placed on the upper pallet, and the power module is placed on the lower pallet;

[0011] A fixing plate for fixing the control box is arranged at the upper supporting plate, and limiting grooves corresponding to the limiting protrusions are arranged on the upper supporting plate and the lower supporting plate.

[0012] Furthermore, the control box is provided with:

[0013] Control power module: The control power module uses an AC power socket to connect to AC220V, and converts AC220V into DC24V through the control power module to provide power for the control box module and each power module control circuit;

[0014] Power supply interface, the power supply interface is an AC380V inlet, the air switch is an AC380V power switch, the AC380V power supply is connected to the three-phase rectifier bridge after passing through the air switch to rectify into a DC power supply, which serves as the power supply for each power module;

[0015] Soft start control module, the DC power supply passes through the soft start control module and is connected to each power module through a high-current aviation plug.

[0016] Further, in the power module, a first high current aviation socket, a second high current aviation socket and a signal aviation socket are included;

[0017] Use the first high-current aviation socket and the second high-current aviation socket to connect the positive high-current aviation plug and the negative high-current aviation plug of the control box respectively;

[0018] Use the signal aviation socket to connect the control signal output end of the control box.

[0019] Furthermore, in the power module,

[0020] A busbar socket is provided, and the busbar socket is connected to the first high-current aviation socket and the second high-current aviation socket;

[0021] An electrolytic capacitor circuit board is provided, which is connected in parallel to the busbar copper bar and is used to store DC power filtering and energy;

[0022] An embedded control circuit board is provided, which drives a high-speed power switch IGBT module, processes input and output voltage and current of the power module, monitors and feeds back the operating status of the power module to the control box module;

[0023] A Hall sensor is provided to detect the output current value of the IGBT module, thereby protecting the IGBT module;

[0024] A high-power high-frequency transformer is provided to transmit the AC power energy after the IGBT module is inverted.

[0025] A high-power rectifier diode is provided, which is used to rectify the AC power output by the high-power high-frequency transformer into a DC low-voltage high-current power output for supplying the DC switch equipment;

[0026] A large current Hall sensor is provided to detect the large current value output by the power module, and the value is processed as an input signal of the embedded control circuit board.

[0027] Compared with the prior art, the current output type power supply device for rail transit operation and maintenance described in the utility model has the following beneficial effects:

[0028] The utility model discloses a current output power supply device for rail transit operation and maintenance, which integrates a control box and a power unit on a carrier unit to form a direct current output power supply device to meet actual use requirements.

[0029] The current output type power supply device for rail transit operation and maintenance described in the utility model can be flexibly used for testing the working characteristics such as the large current tripping characteristics of the DC switch and the characteristics of the protection device during the operation and maintenance of the urban rail transit power supply system, so as to improve the utilization rate of the traction power supply equipment, keep the urban rail transit power supply system in a good operating state at all times, and improve the operation and maintenance level;

[0030] At the same time, the device can be used to detect the working performance of DC switchgear and protective devices during the operation and maintenance of urban rail transit power supply systems, such as the calibration of high-current tripping settings of DC switches and switch action time testing, etc., to timely expose safety hazards of urban rail transit power supply systems and perform maintenance, improve the utilization rate of traction power supply equipment, and reduce or even avoid the occurrence of faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the first angle of an overall current output type power supply device for rail transit operation and maintenance according to an embodiment of the utility model;

[0033] Figure 2 This is a second angle schematic diagram of the entire current output type power supply device for rail transit operation and maintenance according to an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the carrier unit according to an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the upper support plate portion of the carrier unit according to an embodiment of the utility model;

[0036] Figure 5 This is a schematic diagram of the control box structure according to an embodiment of the utility model;

[0037] Figure 6 This is a schematic diagram of the internal structure of the control box according to an embodiment of the utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the power module according to an embodiment of the utility model;

[0039] Figure 8 This is a schematic diagram of the internal structure of the power module according to an embodiment of the utility model;

[0040] Fig. 9 This is a schematic diagram of the connection of the various components of the entire device described in the embodiment of the utility model.

[0041] Description of reference numerals:

[0042] 1-Carrying unit; 11-Plug-in column; 12-Upper pallet; 121-Fixed plate; 13-Lower pallet; 2-Control box; 21-AC power socket; 22-Power supply interface; 23-Air switch; 24-High current aviation plug; 3-Power module; 31-Limiting groove; 33-Plug-in hole; 34-Side tightening block; 35-Carrying handle; 36-Output copper busbar; 37-Fan module; 38-Signal aviation socket; 39-High current aviation socket. DETAILED DESCRIPTION

[0043] 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.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0045] The whole device is mainly composed of power modules, control box and trolley (i.e., transport unit). The control box module is placed on the tray on the top of the trolley and fixed to the steel pipe on the top of the trolley frame by two hand screws. Four power modules are stacked on the trolley. Each power module is fixed to the vertical square tube of the trolley by hand screws (M10) on the left and right sides. This fixing method can prevent the module from moving forward and backward. In addition, each module has a groove on the top cover and a convex groove on the bottom cover. This design can play a role in precise positioning when placing the module, and can also prevent the module from moving left and right. The hollow aluminum tubes on the left and right sides of the power module are convenient for the transportation of the module.

[0046] The main function of the control box module is to send control signals to each power module, detect the working status of the module, and read the voltage, current and other data of the module input and output; the control box module sends control instructions and data through 4 12-core aviation sockets; through the integrated machine with a touch screen, it displays the operating status and output results of the power module; the status indicator light indicates the fault, normal and ready status of the device; the control button is used to send control instructions such as start, reset and emergency stop to the power module; the AC power socket 21 connects AC220V to the control power module, and the control power module converts AC220V into DC24V to provide power for the control box module and each power module control circuit; the power supply interface 22 is an AC380V inlet, and the air switch 23 is an AC380V power switch; A After passing through the air switch 23, the C380V power supply is connected to the three-phase rectifier bridge to rectify into a DC power supply as the power supply for each power module; in order to reduce the current required when the power supply is turned on, a soft start control module is designed, wherein the soft start control module can adopt the existing technology and can be composed of a high-power resistor RXG24-100R / 200W and a high-voltage DC relay NVR6V-200D / 750-12-CH5; because a large-capacity electrolytic capacitor is connected in parallel to the DC bus, in order to reduce the instantaneous current value of the device starting, the high-power resistor is connected in series to the DC bus; the system voltage sampling circuit collects the DC bus voltage greater than DC500V, and sends a control signal for the high-voltage DC relay coil to close, the high-voltage DC relay contacts are connected to the DC bus, and the high-power resistor is short-circuited;

[0047] The DC power supply is connected to each power module through the high-current aviation plug 24 after passing through the soft start control module; the input-output signal conversion circuit board is responsible for converting the control signal input by the control button into a suitable control signal and sending it to the power module, and converting the status signal sent by the power module into an indicator light signal; the communication management module is responsible for the communication between the integrated machine, the power module and the input-output signal conversion circuit board;

[0048] The function of the power module is to accept the control instructions of the control box module and output the output high current value set by the user on the integrated machine; the high current aviation socket 39 is the positive and negative poles of the power module power supply. The two sockets of the high current aviation socket 39 are respectively connected to the positive pole of the DC power supply of the control box module and the positive pole of the DC power supply of the adjacent power module, providing power supply for the adjacent power module; similarly, the two sockets of the high current aviation socket 39 are respectively connected to the negative pole of the DC power supply of the control box module and the negative pole of the DC power supply of the adjacent power module. The signal aviation socket 38 is the control signal access terminal of the power module, and the control signal comes from the aviation socket of the control box module; there are 6 fan modules 37 on the left and right sides of the power module, which play a role in cooling the power module; the output copper busbar 36 is the high current positive and negative output terminals of the power module, which can carry a short-term output current of 5000A; in order to facilitate the transportation and handling of the power module, hollow aluminum tubes 35 are designed on the left and right sides of the power module;

[0049] The power DC power supply is connected to the busbar copper bar inside the power module through a high-current aviation socket; the electrolytic capacitor circuit board is connected in parallel to the busbar copper bar to store DC power filtering and energy; the embedded control circuit board is used to drive the high-speed power switch IGBT module, process the input and output voltage and current of the power module, monitor and feedback the power module operation status to the integrated machine of the control box module; the Hall sensor is used to detect the output current value of the IGBT module to protect the IGBT module; the high-power high-frequency transformer is used to transmit the AC power energy after the IGBT module is inverted; the high-power rectifier diode is used to rectify the AC power output of the high-power high-frequency transformer into a DC low-voltage and high-current power output for supplying DC switching equipment; the high-current Hall sensor is used to detect the high current value output by the power module, and the value is processed as the input signal of the embedded control circuit board.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model 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 by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A current output type power supply device for rail transit operation and maintenance, characterized in that: It includes a carrier unit and a control box and a power module detachably connected to the carrier unit; A plurality of power modules are provided, and adjacent power modules are stacked and arranged, and a plug-in component for fixing the power modules is provided on the carrier unit.

2. A current output type power supply device for rail transit operation and maintenance according to claim 1, characterized in that: A limiting structure is arranged between adjacent power modules, and the limiting structure comprises a limiting groove located on the upper surface of the power module and a limiting protrusion located on the lower surface of the power module.

3. The current output type power supply device for rail transit operation and maintenance according to claim 1, characterized in that: The plug-in component comprises a plug-in column arranged on the carrier unit, a corresponding plug-in hole is arranged on the power module, and a side tightening block is arranged on the power module, and the plug-in column located in the plug-in hole is fixed by the side tightening block.

4. The current output type power supply device for rail transit operation and maintenance according to claim 1, characterized in that: A carrying handle is arranged on the side of the housing of the power module, and the carrying handle comprises a hollow aluminum tube.

5. The current output type power supply device for rail transit operation and maintenance according to claim 2, characterized in that: An upper pallet and a lower pallet are provided on the carrier unit, the control box is placed on the upper pallet, and the power module is placed on the lower pallet; A fixing plate for fixing the control box is arranged on the upper supporting plate.

6. A current output type power supply device for rail transit operation and maintenance according to claim 5, characterized in that: The upper supporting plate and the lower supporting plate are provided with limiting grooves corresponding to the limiting protrusions.

7. A current output type power supply device for rail transit operation and maintenance according to claim 1, characterized in that: The control box is equipped with: Control power module: The control power module uses an AC power socket to connect to AC220V, and converts AC220V into DC24V through the control power module to provide power for the control box module and each power module control circuit; Power supply interface, the power supply interface is an AC380V inlet, the air switch is an AC380V power switch, the AC380V power supply is connected to the three-phase rectifier bridge after passing through the air switch to rectify into a DC power supply, which serves as the power supply for each power module; The DC power supply passes through the soft start control module and is connected to each power module through a high-current aviation plug.

8. The current output type power supply device for rail transit operation and maintenance according to claim 1, characterized in that: In the power module, there are a first high current aviation socket, a second high current aviation socket and a signal aviation socket; Use the first high-current aviation socket and the second high-current aviation socket to connect the positive high-current aviation plug and the negative high-current aviation plug of the control box respectively; Use the signal aviation socket to connect the control signal output end of the control box.

9. A current output type power supply device for rail transit operation and maintenance according to claim 8, characterized in that: In the power module, A busbar socket is provided, and the busbar socket is connected to the first high-current aviation socket and the second high-current aviation socket; An electrolytic capacitor circuit board is provided, which is connected in parallel to the busbar copper bar and is used to store DC power filtering and energy; An embedded control circuit board is provided, and a high-speed power switch IGBT module is driven by the embedded control circuit board; A Hall sensor is provided to detect the output current value of the IGBT module by using the Hall sensor; A high-power high-frequency transformer is provided to transmit the AC power energy after the IGBT module is inverted. A high-power rectifier diode is provided, which is used to rectify the AC power output by the high-power high-frequency transformer into a DC low-voltage high-current power output for supplying the DC switch equipment; A large current Hall sensor is provided to detect the large current value output by the power module.

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