A traction transformer control cabinet and a rail train

Abstract

The application discloses a traction transformer control cabinet and a rail train, and relates to the technical field of rail transit vehicles.The traction transformer control cabinet comprises a detachable shell and a control module arranged in the detachable shell; wherein the control module is used for determining the fan frequency of the fan in the cooling system of the traction transformer according to the first collection data sent by the whole vehicle controller of the rail train and the second collection data sent by the traction transformer, so as to utilize the fan frequency to perform frequency conversion control on the fan; the first collection signal comprises vehicle speed data, and the second collection signal comprises oil temperature data; through the arrangement of the traction transformer control cabinet, the control module in the traction transformer control cabinet performs frequency conversion control on the cooling fan according to the data such as the vehicle speed of the train and the oil temperature of the traction transformer, the low noise and the intelligentization of the traction transformer are realized, the noise of the rail train can be effectively reduced, and the passenger comfort is improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit vehicle technology, and in particular to a traction transformer control cabinet and a rail train. Background Technology

[0002] The traction transformer of a rail transit vehicle is installed on the train. It converts the 25kV high-voltage electricity from the overhead contact line into various low-voltage electricity required by the traction and auxiliary systems. It is a special voltage level power transformer that needs to meet the requirements of drastic changes in traction load, while suppressing harmonic currents and limiting short-circuit currents, so as to ensure the safe, stable and reliable operation of the train's electric drive system. It is the power source of the rail vehicle and the core and key component of the traction system.

[0003] In the existing technology, the traction transformer of rail trains usually adopts a cooling method of forced ventilation by cooling fans, and the cooling fans adopt a two- or four-pole switching control. For example, when the oil temperature of the traction transformer is low and the train speed is low, the cooling fan runs at a low speed (such as 25Hz); when the oil temperature is high or the train speed is high, the cooling fan runs at a high speed (such as 50Hz). When the fan runs at high speed, the noise of the whole vehicle is large.

[0004] With the rapid development of rail transit and the increasing demand for passenger comfort, how to effectively reduce the noise of rail trains and improve passenger comfort is an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a traction transformer control cabinet and a railcar to reduce the noise of the railcar and improve passenger comfort.

[0006] To solve the above-mentioned technical problems, the present invention provides a traction transformer control cabinet, comprising: a detachable housing and a control module disposed inside the detachable housing;

[0007] The control module is used to determine the fan frequency of the fan in the cooling system of the traction transformer based on the first acquired data sent by the vehicle controller of the railcar and the second acquired data sent by the traction transformer, so as to use the fan frequency to perform frequency conversion control on the fan; the first acquired signal includes vehicle speed data and the second acquired signal includes oil temperature data.

[0008] Optionally, the control module is connected to the vehicle controller via Ethernet.

[0009] Optionally, the outer side of the detachable housing is provided with an Ethernet plug, a transformer connection plug, and a control cabinet power plug;

[0010] The vehicle controller is connected to the control module via the Ethernet connector and is used to send the first acquired data to the control module via Ethernet; the traction transformer is connected to the control module via the transformer connector and is used to send the second acquired data to the control module; the railcar supplies power to the control module via the control cabinet power connector.

[0011] Optionally, the detachable outer casing includes a cabinet and a lid; wherein the lid is detachably connected to the cabinet.

[0012] Optionally, the lid is located above the cabinet, and a handle is provided on the outer side of the side wall of the cabinet.

[0013] Optionally, the traction transformer control cabinet may also include: a frequency converter module disposed inside the removable housing;

[0014] The railcar supplies power to the fan via the frequency converter module; the frequency converter module is used to adjust the power supply output to the fan according to the frequency converter control signal corresponding to the frequency of the fan, thereby realizing the frequency converter control of the fan.

[0015] Optionally, the frequency converter module is specifically used to adjust the power supply output to the fan according to the frequency converter control signal sent by the control module.

[0016] Optionally, the frequency converter module is specifically used to adjust the power supply output to the fan according to the frequency converter control signal sent by the vehicle controller.

[0017] Optionally, the outer side of the detachable housing is provided with a fan power input plug and a fan power output plug;

[0018] The railcar is connected to the frequency converter module via the fan power input plug, which supplies power to the fan through the frequency converter module; the fan is connected to the frequency converter module via the fan power output plug, which adjusts the fan speed according to the power supply output by the frequency converter module.

[0019] In addition, the present invention also provides a rail train, including: a traction transformer control cabinet as described above.

[0020] The present invention provides a traction transformer control cabinet, comprising: a detachable housing and a control module disposed inside the detachable housing; wherein, the control module is used to determine the fan frequency of the fan in the cooling system of the traction transformer based on the first acquisition data sent by the vehicle controller of the rail train and the second acquisition data sent by the traction transformer, so as to use the fan frequency to perform frequency conversion control of the fan; the first acquisition signal includes vehicle speed data, and the second acquisition signal includes oil temperature data;

[0021] As can be seen, this invention, through the setup of the traction transformer control cabinet, utilizes the control module within the cabinet to perform frequency conversion control of the cooling fan based on data such as train speed and traction transformer oil temperature. This achieves low noise and intelligent operation of the traction transformer, effectively reducing the noise of the railcar and improving passenger comfort. Furthermore, this invention also provides a railcar that possesses the same beneficial effects. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a structural block diagram of a traction transformer control cabinet provided in an embodiment of the present invention;

[0024] Figure 2 An external view of another traction transformer control cabinet provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of another traction transformer control cabinet provided in an embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please refer to Figure 1 , Figure 1This is a structural block diagram of a traction transformer control cabinet provided in an embodiment of the present invention. The traction transformer control cabinet may include: a detachable housing 10 and a control module 20 disposed inside the detachable housing 10;

[0028] The control module 20 is used to determine the fan frequency of the fan in the cooling system of the traction transformer based on the first acquisition data sent by the vehicle controller of the rail train and the second acquisition data sent by the traction transformer, so as to use the fan frequency to perform frequency conversion control of the fan; the first acquisition signal includes vehicle speed data and the second acquisition signal includes oil temperature data.

[0029] It is understood that the detachable housing 10 in this embodiment can be a detachable and openable housing of the traction transformer control cabinet (or intelligent cabinet), so that when the internal components (such as the control module 20) of the detachable housing 10 are inspected, the staff can easily open the detachable housing 10 to inspect the internal components, and close and restore the detachable housing 10 after the inspection is completed.

[0030] Specifically, the specific structure of the detachable outer shell 10 in this embodiment can be customized by the designer according to the practical scenario and user needs, such as... Figure 2 As shown, the detachable outer casing 10 may include a cabinet 11 and a cover 12; wherein, the cover 12 is detachably connected to the cabinet 11; that is, the cover 12 can serve as a detachable part of the detachable outer casing 10, and personnel can remove the cover 12 during maintenance to inspect components (such as the control module 20) inside the cabinet 11. This embodiment does not impose any limitations on the detachable outer casing 10 as long as it can be disassembled and opened.

[0031] Correspondingly, to facilitate the disassembly of the detachable outer casing 10, a handle component can also be provided on the detachable outer casing 10 in this embodiment. For example... Figure 2 As shown, when the cover 12 is located above the cabinet 11, a handle 13 can be provided on the outer side of the side wall of the cabinet so that the staff can remove the cover 12 through the handle 13.

[0032] It should be noted that in this embodiment, the control module 20 can be a control component inside the traction transformer control cabinet, such as a processor. The first acquired data in this embodiment can be data related to fan frequency changes collected and sent by the entire train's controller, such as train speed data; the second acquired data can be data related to fan frequency changes collected and sent by the traction transformer's controller, such as traction transformer oil temperature data. In this embodiment, the control module 20 can determine the fan frequency in the traction transformer's cooling system based on the first acquired data sent by the train's controller and the second acquired data sent by the traction transformer, thereby using the fan frequency to perform frequency conversion control of the fan speed.

[0033] Specifically, the method by which the control module 20 determines the fan frequency in the cooling system of the traction transformer based on the first acquired data sent by the train's vehicle controller and the second acquired data sent by the traction transformer can be set by the designer. For example, it can be implemented using a method similar to or the same as the frequency conversion control method in existing technologies. For instance, the control module 20 can calculate and determine the fan frequency based on the vehicle speed data and oil temperature data, so that the fan frequency increases with increasing oil temperature data while keeping the vehicle speed constant; and vice versa. This embodiment does not impose any limitations on the control module 20's ability to determine the fan frequency using the first and second acquired data to achieve stepless speed regulation of the fan.

[0034] Correspondingly, in this embodiment, the control module 20 inside the detachable housing 10 can be connected to the vehicle controller via Ethernet. Accordingly, as... Figure 2 As shown, the outer side of the detachable housing 10 can be equipped with an Ethernet plug 31, a transformer connection plug 32, and a control cabinet power plug 33. The vehicle controller is connected to the control module 20 via the Ethernet plug 31 to send first acquired data to the control module 20 via Ethernet. The traction transformer is connected to the control module 20 via the transformer connection plug 32 to send second acquired data to the control module 20. The railcar supplies power to the control module 20 via the control cabinet power plug 33; that is, the corresponding power supply terminal in the railcar can be connected to the control cabinet power plug 33 to supply power to the control module 20 inside the detachable housing 10.

[0035] Furthermore, the traction transformer control cabinet provided in this embodiment may also include a frequency conversion module (such as a frequency converter) disposed inside the detachable housing 10; wherein, the rail train supplies power to the fan through the frequency conversion module; the frequency conversion module is used to adjust the power supply output to the fan according to the frequency conversion control signal corresponding to the received fan frequency, thereby realizing the frequency conversion control of the fan; that is, the frequency conversion module inside the detachable housing 10 can convert the power supply from the rail train to the fan (such as a frequency converter)... Figure 3 The AC380V, 50Hz power supply shown is adjusted to the power supply corresponding to the fan frequency to power the fan, thereby realizing the frequency conversion control of the fan.

[0036] In other words, the control module 20 can use the fan frequency to perform frequency conversion control on the fan through the frequency converter module inside the traction transformer control cabinet, thereby achieving stepless speed regulation of the fan. The specific method by which the control module 20 inside the detachable housing 10 uses the fan frequency to perform frequency conversion control on the fan can be set by the designer according to the practical scenario and user needs. For example, the control module 20 can directly send the frequency conversion control signal corresponding to the fan frequency to the frequency converter module, so that the frequency converter module can adjust the power supply output to the fan according to the frequency conversion control signal sent by the control module 20. If the fan control needs to be performed by the vehicle controller, the control module 20 can send the determined fan frequency to the vehicle controller, so that the vehicle controller can send the frequency conversion control signal corresponding to the fan frequency to the frequency converter module, allowing the frequency converter module to adjust the power supply output to the fan according to the frequency conversion control signal sent by the vehicle controller.

[0037] Specifically, such as Figure 2 As shown, the outer side of the detachable housing 10 can be provided with a fan power supply input plug 34 and a fan power supply output plug 35; wherein, the rail train is connected to the frequency converter module through the fan power supply input plug 34, and is used to supply power to the fan through the frequency converter module; the fan is connected to the frequency converter module through the fan power supply output plug 35, and is used to adjust the fan speed according to the power supply output by the frequency converter module; that is, the corresponding power supply end in the rail train can be connected to the fan power supply input plug 34, and the fan is supplied with power through the frequency converter module.

[0038] Correspondingly, when the traction transformer control cabinet malfunctions, such as when the control module 20 malfunctions, the railcar can switch to a direct hard-wire connection to power the fan. Similarly, when the control module 20 malfunctions and cannot receive the frequency conversion control signal from the control module 20, the inverter module can directly connect the internal connection between the fan power input plug and the fan power output plug to switch the corresponding power supply terminal in the railcar to a direct hard-wire connection with the fan. Alternatively, when the traction transformer control cabinet malfunctions, the vehicle controller can disconnect the connection between the corresponding power supply terminal in the railcar and the fan power input plug 34, and switch the connection between the corresponding power supply terminal in the railcar and the fan to a direct hard-wire connection.

[0039] In this embodiment, the present invention utilizes the traction transformer control cabinet to control the cooling fan via frequency conversion using the control module 20 within the traction transformer control cabinet based on data such as train speed and traction transformer oil temperature. This achieves low noise and intelligent operation of the traction transformer, effectively reducing the noise of the rail train and improving passenger comfort.

[0040] Corresponding to the above embodiment of the traction transformer control cabinet, this embodiment of the invention also provides a rail train. The rail train described below and the traction transformer control cabinet described above can be referred to in correspondence.

[0041] A rail train includes a traction transformer control cabinet as provided in the above embodiments.

[0042] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the rail train disclosed in the embodiments, since it corresponds to the traction transformer control cabinet disclosed in the embodiments, the description is relatively simple; relevant parts can be found in the method section.

[0043] The foregoing has provided a detailed description of the traction transformer control cabinet and railcar provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A traction transformer control cabinet, characterized in that, include: A removable housing and a control module disposed inside the removable housing; The control module is used to determine the fan frequency of the fan in the cooling system of the traction transformer based on the first data collected by the vehicle controller of the railcar and the second data collected by the traction transformer, so as to use the fan frequency to perform frequency conversion control on the fan; the first data collected includes vehicle speed data and the second data collected includes oil temperature data. It also includes: a frequency converter module disposed inside the removable housing; The railcar supplies power to the fan via the frequency converter module; the frequency converter module is used to adjust the power supply output to the fan according to the frequency converter control signal corresponding to the fan frequency, thereby realizing the frequency converter control of the fan. The control module is connected to the vehicle controller via Ethernet; The outer side of the detachable housing is equipped with an Ethernet plug, a transformer connection plug, and a control cabinet power plug. The vehicle controller is connected to the control module via the Ethernet connector and is used to send the first acquired data to the control module via Ethernet; the traction transformer is connected to the control module via the transformer connector and is used to send the second acquired data to the control module; the railcar supplies power to the control module via the control cabinet power connector.

2. The traction transformer control cabinet according to claim 1, characterized in that, The detachable outer shell includes a cabinet and a lid; wherein the lid is detachably connected to the cabinet.

3. The traction transformer control cabinet according to claim 2, characterized in that, The lid is located on top of the cabinet, and a handle is provided on the outer side of the side wall of the cabinet.

4. The traction transformer control cabinet according to claim 1, characterized in that, The frequency converter module is specifically used to adjust the power supply output to the fan according to the frequency converter control signal sent by the control module.

5. The traction transformer control cabinet according to claim 1, characterized in that, The frequency converter module is specifically used to adjust the power supply output to the fan according to the frequency converter control signal sent by the vehicle controller.

6. The traction transformer control cabinet according to claim 1, characterized in that, The outer side of the detachable housing is provided with a fan power input plug and a fan power output plug; The railcar is connected to the frequency converter module via the fan power input plug, which supplies power to the fan through the frequency converter module; the fan is connected to the frequency converter module via the fan power output plug, which adjusts the fan speed according to the power supply output by the frequency converter module.

7. A rail train, characterized in that, include: The traction transformer control cabinet as described in any one of claims 1 to 6.

Images