CN116938000A

CN116938000A - Traction converter

Info

Publication number: CN116938000A
Application number: CN202210357085.3A
Authority: CN
Inventors: 范荣辉; 康子剑; 李华; 邹白苏; 陈侃; 李玉鹏; 付建辉; 余仁忠
Original assignee: Zhuzhou CRRC Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2023-10-24

Abstract

The application provides a traction converter, which comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are arranged in a cabinet body of the traction converter along left and right side by side; a cooling device is arranged above the cabinet body; the cooling device comprises a first cavity, a cooling device and a second cavity, wherein a cooling pipeline for cooling medium circulation is arranged in the first cavity, a heat exchange end at one end of the cooling pipeline extends into the cooling device, an air channel is arranged in the second cavity, and the cooling device is provided with a fan corresponding to the heat exchange end and an air channel opening of the air channel. Based on the technical scheme of the application, the main transformer and auxiliary transformer power supply units are integrated, an auxiliary converter and an auxiliary filter cabinet are not required to be additionally arranged, the integration level of an electric system is improved, under the condition of no hanging cabinet, all components on the traction side and all components on the auxiliary transformer side except for the magnetic element can be conveniently maintained and replaced, the traction converter integrates a cooling device, and the integration level of the traction converter is improved.

Description

Traction converter

Technical Field

The application relates to the technical field of hybrid locomotives, in particular to a traction converter.

Background

The use of the hybrid power technology can improve the use efficiency of energy sources, reduce the energy consumption of products and realize energy conservation and emission reduction;

however, compared with a common internal combustion power shunting locomotive, the power storage battery in the hybrid power shunting locomotive occupies a larger space, the traction converter in the locomotive is limited in installation area, and the common traction converter is difficult to be suitable for a novel hybrid power shunting locomotive.

Disclosure of Invention

Aiming at the problems in the prior art, the application provides the traction converter, which integrates a main transformer power supply unit and an auxiliary transformer power supply unit, does not need to be additionally provided with an auxiliary converter and an auxiliary filter cabinet, is also integrated with a cooling device, adopts a cooling mode of combining air cooling and water cooling, ensures the stability of the traction converter, and improves the integration level of the traction converter; the modules in the traction part adopt water cooling for heat dissipation, and the auxiliary part adopts air cooling for heat dissipation, so that the cooling efficiency is improved.

The traction converter comprises a first cavity and a second cavity which are arranged side by side along the left and right in a cabinet body of the traction converter; a cooling device is arranged above the cabinet body;

the cooling device comprises a first cavity, a cooling device and a second cavity, wherein a cooling pipeline for cooling medium circulation is arranged in the first cavity, a heat exchange end at one end of the cooling pipeline extends into the cooling device, an air channel is arranged in the second cavity, and the cooling device is provided with a fan corresponding to the heat exchange end and an air channel opening of the air channel.

In one embodiment, the first cavity is divided into two first sub-cavities and two second sub-cavities which are adjacent left and right, and a converter module is arranged in the first sub-cavities and the second sub-cavities and comprises a traction inversion module, a DCDC module and an auxiliary inversion module.

In an embodiment, the first sub-cavity and the second sub-cavity are divided into two first installation cavities in the front-rear direction, and in this embodiment, because the converter modules are more, the first sub-cavity and the second sub-cavity are divided into two first installation cavities in the front-rear direction, so that the converter modules are convenient to install respectively, and meanwhile, the independent maintenance, the maintenance and the replacement operation of any converter module can be performed at the later stage conveniently.

In one embodiment, the converter modules are all fixed in the first installation cavity through the installation plate, guide rails corresponding to the bottoms of the installation plates are arranged on the cavity walls of the first installation cavity, and according to the embodiment, when the converter modules are installed, replaced or maintained, operators can conveniently move the converter modules through the guide rails and the installation plate, so that the safety of the converter modules and the operators in the operation process is guaranteed.

In an embodiment, the second cavity is divided into adjacent third sub-cavity, fourth sub-cavity and fifth sub-cavity in the fore-and-aft direction, the wind channel shaping in the fourth sub-cavity, install transformer module and reactor module in the fourth sub-cavity, through this embodiment, divide into three sub-cavity with the second cavity on the one hand, the categorised setting installation of the functional part of being convenient for, on the other hand transformer module and reactor module that sets up in the fourth sub-cavity can assist traction inversion module and assist inversion module's work, stabilizes its during operation's voltage.

In one embodiment, the second cavity is divided into the third sub-cavity, the fourth sub-cavity and the fifth sub-cavity in the front-back direction through the front partition plate and the rear partition plate of the air duct, and the second cavity is divided by the front partition plate and the rear partition plate of the air duct through the embodiment, so that the temperature of the transformer module and the reactor module in the fourth sub-cavity is higher during operation, the transformer module and the reactor module are directly arranged in the air duct, cooling air is directly obtained, and the cooling effect is good.

In an embodiment, the functional components in the third sub-cavity and the fifth sub-cavity are respectively installed on the front partition board and the rear partition board, and the functional components comprise an auxiliary functional module and a wiring module.

In one embodiment, the cooling pipeline includes a plurality of branch pipelines which are located in the first cavity and are connected with the heat exchange end in parallel, the positions of the branch pipelines correspond to the positions of the converter modules, and through the embodiment, the cooling medium in the cooling pipeline circulates in each branch pipeline and the heat exchange end, the cooling medium in the branch pipeline cools each corresponding converter module, and the cooling medium after heat absorption cools the converter modules in the heat exchange end through a fan of the cooling device.

In one embodiment, the cabinet body is a rectangular frame structure formed by a plurality of beam bodies, the first sub-cavity, the second sub-cavity, the third sub-cavity, the fourth sub-cavity and the fifth sub-cavity are all provided with corresponding cabinet doors, and the cabinet doors and the cabinet body form a closed structure, so that on one hand, the functional module in any sub-cavity of the cabinet body can be disassembled or maintained without hanging the cabinet; on the other hand, the novel waterproof and dustproof cabinet can prevent water and dust, keep the environment in the cabinet clean, and improve the service life and the working stability of each functional module in the cabinet.

In an embodiment, the first cavity with the bottom of second cavity all is provided with the wiring board of fixing on the cabinet body, through this embodiment, the functional part in the first cavity of being convenient for and the second cavity is wired for the internal wiring of cabinet is reasonable, and the later stage staff of being convenient for maintains.

The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present application can be achieved.

Compared with the prior art, the traction converter provided by the application has at least the following beneficial effects:

(1) The traction converter integrates a main transformer and an auxiliary transformer power supply unit, does not need to be additionally provided with an auxiliary converter and an auxiliary filter cabinet, and is beneficial to improving the integration level of an electrical system.

(2) The maintenance mode of two sides is adopted, and under the condition of no hanging cabinet, each functional part in the cabinet body can be conveniently maintained and replaced.

(3) The integrated cooling device of the traction converter improves the integration level of the traction converter.

(4) The fan of cooling device cools down first cavity and second cavity simultaneously, and adopts water-cooling and forced air cooling's cooling mode simultaneously, further improves cooling device's integrated level and cooling efficiency.

Drawings

The application will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic diagram of the traction converter according to an embodiment of the application;

fig. 2 shows a schematic diagram of the traction converter according to an embodiment of the application;

fig. 3 shows a schematic diagram of the traction converter according to an embodiment of the application;

fig. 4 shows a schematic diagram of the traction converter according to an embodiment of the application;

in the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

the intelligent power supply system comprises a 1-cabinet body, a 2-cooling device, a 3-air deflector, a 4-cabinet door, a 5-auxiliary inversion module, a 6-supporting capacitor module, a 7-traction inversion module, an 8-rectifying module unit, a 9-DCDC module, a 10-charging resistor module, an 11-discharging module, a 12-contactor module, a 13-charger module, a 14-excitation driving module, a 15-capacitor unit, a 16-transformer module and a 17-reactor module.

Detailed Description

The application will be further described with reference to the accompanying drawings.

The application provides a traction converter, which comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are arranged in a cabinet body of the traction converter along left and right sides; a cooling device is arranged above the cabinet body;

the cooling device comprises a first cavity, a cooling pipeline for cooling medium circulation is arranged in the first cavity, a heat exchange end at one end of the cooling pipeline extends into the cooling device, an air channel is arranged in the second cavity, and the cooling device is provided with a fan corresponding to the heat exchange end and an air channel opening of the air channel.

Specifically, as shown in fig. 1, the cooling device 2 is arranged above the cabinet body 1, a cooling pipeline is arranged in the first cavity, an air pipe is arranged in the second cavity, and the heat exchange end of the cooling pipeline and the air channel opening of the air pipe correspond to a fan in the cooling device 2; the traction converter integrates the cooling device 2 into a whole, so that the integration level of the traction converter is improved, the fan of the cooling device 2 cools the first cavity and the second cavity simultaneously, and the cooling mode of water cooling and air cooling is adopted simultaneously, so that the integration level and the cooling efficiency of the cooling device 2 are improved.

In one embodiment, as shown in fig. 1, an arc-shaped air deflector 3 is further arranged between the cooling device 2 and the second cavity, and the cooling air pumped by the fan in the cooling device 2 is sent into the second cavity.

In one embodiment, the first cavity is divided into two first sub-cavities and two second sub-cavities which are adjacent left and right, and the first sub-cavities and the second sub-cavities are internally provided with converter modules, and the converter modules comprise traction inversion modules and auxiliary inversion modules 5.

Specifically, as shown in fig. 2, the first cavity is divided into two first sub-cavities and two second sub-cavities which are adjacent left and right, the traction inversion module 7 is installed in the first cavity, the auxiliary inversion module 5 is installed in the second cavity, and the tops of the first sub-cavities and the second sub-cavities are divided into spaces for installing the DCDC module, so that the converter modules are convenient to install respectively, and meanwhile, independent maintenance, maintenance and replacement operation of any converter module can be carried out at the later stage conveniently.

In one embodiment, as shown in fig. 2 and fig. 4, the first sub-cavity and the second sub-cavity are divided into two first installation cavities in the front-rear direction, and the number of the traction inversion modules 7 and the auxiliary inversion modules 5 is large, so that the first sub-cavity and the second sub-cavity are divided into two first installation cavities in the front-rear direction, and the traction inversion modules 7 and the auxiliary inversion modules 5 are respectively installed, so that the cabinet body is higher in compactness, and on the other hand, independent maintenance, maintenance and replacement operations are conveniently performed on any converter module on the front side and the rear side.

Specifically, as shown in fig. 4, the second sub-cavity on one side of the first cavity is provided with an auxiliary inversion module 5 and a supporting capacitor module 6 from top to bottom respectively; the first subchamber is provided with a traction inversion module 7 and a rectification module unit 8 from top to bottom respectively.

Further, as shown in fig. 2, a DCDC module 9, a traction inversion module 7 and a charging resistor module 10 are respectively arranged in the first subcavity at the other side of the first cavity from top to bottom; the second subchamber is provided with a DCDC module 9, an auxiliary inversion module 5 and a pre-charging and discharging module 11 from top to bottom respectively.

In one embodiment, the converter modules are all fixed in the first installation cavity through the installation plate, guide rails corresponding to the bottoms of the installation plates are arranged on the cavity walls of the first installation cavity, and when the converter modules are installed, replaced or maintained, operators can conveniently move the converter modules through the guide rails and the installation plates, so that the safety of the converter modules and the operators in the operation process is guaranteed.

In one embodiment, the second cavity is divided into a third sub cavity, a fourth sub cavity and a fifth sub cavity which are adjacent in the front-back direction, the air duct is formed in the fourth sub cavity, the transformer module and the reactor module are arranged in the fourth sub cavity, the second cavity is divided into three sub cavities on one hand, the functional components are convenient to install in a classified arrangement mode, and the transformer module and the reactor module arranged in the fourth sub cavity can assist the DCDC module and assist the inversion module to work so as to stabilize the voltage of the DC module and the inversion module during working.

Specifically, as shown in fig. 2 and 4, the cabinet where the second cavity is located is divided into three adjacent third, fourth and fifth sub-cavities in the front-rear direction, the fourth sub-cavity being used for mounting the transformer module 16 and the reactor module 17.

It should be noted that, the second cavity divides third sub-cavity, fourth sub-cavity and fifth sub-cavity in the fore-and-aft direction through the front baffle and the back baffle of wind channel, on the one hand, utilize the front baffle and the back baffle of wind channel to divide the second cavity, on the other hand, the transformer module and the reactor module during operation that are located the fourth sub-cavity are higher in temperature, with it direct setting in the wind channel, directly obtain the cooling of cooling air, the cooling effect is good.

In one embodiment, the functional modules in the third sub-cavity and the fifth sub-cavity are respectively installed on the front partition board and the rear partition board, and the functional modules comprise an auxiliary inversion module and a wiring module.

Specifically, as shown in fig. 4, the third sub-cavity of the second cavity is divided into an upper part and a lower part, the upper part comprises a contactor module 12, a charger module 13 and an excitation driving module 14, and the lower part comprises a wiring module and the contactor module 12; as shown in fig. 2, the fifth sub-cavity of the second cavity comprises, from top to bottom, a contactor module 12 and a capacitor module 15.

In one embodiment, the cooling pipeline comprises a plurality of branch pipelines which are positioned in the first cavity and are connected with the heat exchange end in parallel, the positions of the branch pipelines correspond to the positions of the converter modules, the cooling medium in the cooling pipeline circulates in each branch pipeline and the heat exchange end, the cooling medium in the branch pipeline cools each corresponding converter module, and the cooling medium after heat absorption cools the converter modules in the heat exchange end through a fan of the cooling device.

In one embodiment, as shown in fig. 1 and fig. 2, the cabinet body 1 is a rectangular frame structure formed by a plurality of beams, the first sub-cavity, the second sub-cavity, the third sub-cavity, the fourth sub-cavity and the fifth sub-cavity are all provided with corresponding cabinet doors 4, and the cabinet doors and the cabinet body form a closed structure, so that on one hand, the functional module in any sub-cavity of the cabinet body can be disassembled or maintained without hanging the cabinet; on the other hand, the novel waterproof and dustproof cabinet can prevent water and dust, keep the environment in the cabinet clean, and improve the service life and the working stability of each functional module in the cabinet.

In one embodiment, the bottoms of the first cavity and the second cavity are provided with wiring boards fixed on the cabinet body 1, so that functional components in the first cavity and the second cavity are convenient to wire, wiring in the cabinet body is reasonable, and later-stage staff is convenient to maintain.

Specifically, main generator input terminal, brake resistance and traction motor binding post all are connected with the wiring board in the first cavity, and auxiliary change output wiring all is connected with the wiring board in the second cavity.

In one embodiment, the main pipeline is also provided with a temperature sensor and a pressure sensor, the water temperature and the water pressure in the main pipeline are detected in real time, and when the high pressure or high temperature condition occurs, the power of the converter is reduced in time, so that the safety of the converter is ensured.

In one embodiment, door interlocking mechanisms are also arranged between the cabinet doors 4, and the cabinet doors 4 can be opened only when the locomotive is out of operation.

In one embodiment, the fixed discharge resistor is bolted to the water-cooled radiator.

In one embodiment, the charging resistor module 10 is fixed on the epoxy cloth plate through nuts to form a resistor assembly, so that wiring and disassembly are convenient.

In the description of the present application, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

Although the application herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present application as defined by the appended claims. It should be understood that the different dependent claims and the features herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other embodiments.

Claims

1. The traction converter is characterized by comprising a first cavity and a second cavity which are arranged side by side along the left and right in a cabinet body of the traction converter; a cooling device is arranged above the cabinet body;

2. The traction converter of claim 1, wherein the first cavity is divided into two first subchambers and two second subchambers which are adjacent left and right, and wherein a converter module is arranged in the first subchamber and the second subchamber, and the converter module comprises a traction inversion module, a DCDC module and an auxiliary inversion module.

3. The traction converter of claim 2, wherein the first subchamber and the second subchamber each divide into two first mounting chambers in a fore-aft direction.

4. A traction converter according to claim 3, wherein the converter modules are each secured within the first mounting chamber by a mounting plate, and the walls of the first mounting chamber are provided with guide tracks corresponding to the bottoms of the mounting plates.

5. The traction converter of claim 2, wherein the second cavity is divided into a third sub-cavity, a fourth sub-cavity and a fifth sub-cavity adjacent to each other in a front-rear direction, the air duct being formed in the fourth sub-cavity, and the fourth sub-cavity having the transformer module and the reactor module mounted therein.

6. The traction converter of claim 5, wherein the second cavity is divided into the third, fourth, and fifth subchambers in a fore-aft direction by a front baffle and a rear baffle of the air duct.

7. The traction converter of claim 6, wherein functional components within the third and fifth subchambers are mounted to the front and rear baffles, respectively, the functional components including auxiliary functional modules and wiring modules.

8. The traction converter of claim 2, wherein the cooling circuit includes a plurality of branch circuits positioned within the first cavity and connected in parallel with the heat exchange end, the branch circuits positioned to correspond to the position of each of the converter modules.

9. The traction converter of claim 5, wherein the cabinet is a rectangular frame structure formed by a plurality of beams, and the first subcavities, the second subcavities, the third subcavities, the fourth subcavities and the fifth subcavities are all provided with corresponding cabinet doors, and the cabinet doors and the cabinet are formed into a closed structure.

10. The traction converter of claim 1, wherein the bottoms of the first and second cavities are each provided with a terminal block secured to the cabinet.