CN218451083U

CN218451083U - Cooling device for converter cabinet of motor train unit

Info

Publication number: CN218451083U
Application number: CN202222857994.1U
Authority: CN
Inventors: 谭志雄; 欧军晖; 吴凯; 王先海; 苏义刚
Original assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-02-03
Anticipated expiration: 2032-10-28

Abstract

The utility model relates to a cooling device for EMUs converter cabinet, including connecting the heat exchanger on the EMUs converter, and connect power component on the heat exchanger. The liquid inlet of the heat exchanger is connected with the cooling liquid outlet of the converter through a first pipeline, the liquid outlet of the heat exchanger is connected with the cooling liquid inlet of the converter through a second pipeline, the heat exchanger and the power element are connected with the second pipeline through a third pipeline, so that the heat exchanger, the power element and the converter can be arranged separately from one another, and the heat exchanger and the power element can be installed in the converter cabinet body.

Description

Cooling device for converter cabinet of motor train unit

Technical Field

The utility model relates to a cooling device for EMUs converter cabinet.

Background

The converter is one of common devices in the motor train unit, is generally arranged in a special converter cabinet and is installed in the motor train unit through the converter cabinet. The current transformer and the reactor connected to the current transformer can generate a large amount of heat in the long-time working process, so that the temperature of the current transformer is increased, and the use of the current transformer is influenced. Therefore, in the actual use process, an operator generally needs to connect a cooling device to the converter cabinet to reduce the temperature of the converter.

Existing cooling devices are generally of unitary construction and are mounted within a separate housing. The box body is independently arranged on the outer side of the converter cabinet and is communicated with the converter cabinet through an air duct. The box body and the air duct are large in size, so that a large space needs to be occupied, and the space around the converter cabinet is small. The cooling device is therefore difficult to install and maintain, limiting the use of the cooling device.

Meanwhile, the existing device can only cool down the converter or the reactor independently, and cannot cool down and dissipate the converter and the reactor simultaneously, so that the cooling effect is not ideal and the adaptation is poor. The energy utilization rate is low.

SUMMERY OF THE UTILITY MODEL

To the technical problem as above, the utility model aims at providing a split type cooling device for EMUs converter cabinet. The utility model discloses a cooling device for EMUs converter cabinet, each region at the converter cabinet is installed to the dispersible formula, and space utilization improves the space utilization in small, broken bits space in the make full use of converter, reduces the converter cabinet volume. Meanwhile, the cooling device can improve the energy utilization rate and can cool and radiate multiple parts such as the converter cabinet, the reactor and the like.

According to the utility model discloses, a cooling device for EMUs converter cabinet is provided, including connecting the heat exchanger on the EMUs converter, and connect power component on the heat exchanger.

The liquid inlet of the heat exchanger is connected with the cooling liquid outlet of the converter through a first pipeline, the liquid outlet of the heat exchanger is connected with the cooling liquid inlet of the converter through a second pipeline, and the heat exchanger and the power element are connected with the second pipeline through a third pipeline, so that the heat exchanger, the power element and the converter can be arranged separately from one another, and the heat exchanger and the power element can be installed in the converter cabinet body.

In a preferred embodiment, an air inlet and an air outlet which are communicated with the outside are respectively arranged on the inner walls of the converter cabinets on the upper side and the lower side of the heat exchanger, and a negative pressure generating device is further arranged on one side of the heat exchanger close to the air outlet and can generate negative pressure so as to form air-cooled airflow which flows through the heat exchanger between the air inlet and the air outlet.

In a preferred embodiment, the heat exchanger and the negative pressure generating device are arranged in series with a reactor in the converter cabinet, respectively, and are arranged upstream and downstream of the reactor, respectively, so that the air-cooled airflow can flow through the reactor.

In a preferred embodiment, end covers are further disposed on the air inlet and the air outlet, respectively, and the end covers are configured to slide relative to the air inlet and the air outlet, so as to adjust the sizes of the air inlet and the air outlet.

In a preferred embodiment, an expansion tank capable of communicating with the heat exchanger is further connected to the heat exchanger.

In a preferred embodiment, the expansion tank is connected to the heat exchanger by welding, so that the expansion tank and the heat exchanger can be formed into a whole, the volume of the expansion tank is reduced, and the maintainability of the expansion tank is improved.

In a preferred embodiment, a controller is further arranged in the expansion water tank, and the controller is arranged to cut off the communication between the expansion water tank and the heat exchanger and communicate the expansion water tank with the heat exchanger when the liquid level of the expansion water tank is higher than a certain threshold value.

In a preferred embodiment, the liquid level sensor is a float-type liquid level sensor, and the float-type liquid level sensor is arranged in the expansion tank along the horizontal direction. The floating rod type liquid level sensor can greatly reduce the required installation space compared with a vertically installed floating rod type liquid level sensor, and can monitor any liquid level by adjusting the installation height according to the requirement.

In a preferred embodiment, a quick-release screen is further arranged on the air inlet. The screen cloth is provided with quick assembly disassembly structure, can simplify the dismouting step, reduces and washs the maintenance time.

In a preferred embodiment, a filter is further provided between the heat exchanger and the first pipeline, the filter being provided in a filter structure. Compared with the traditional filter tube type filter, the filter disc type filter can effectively improve the performance of the fan at the same wind speed, simultaneously reduce the noise of the system and reduce the energy consumption.

Drawings

The present invention will be described with reference to the accompanying drawings.

Fig. 1 shows a schematic view of a cooling device for a converter cabinet of a motor train unit according to an embodiment of the present invention.

Fig. 2 is a schematic view of a heat exchanger of the cooling device for the converter cabinet of the motor train unit shown in fig. 1.

Fig. 3 is a schematic diagram of a controller of the cooling device for the converter cabinet of the motor train unit shown in fig. 1.

In the present application, the drawings are schematic, merely illustrative of the principles of the invention, and are not drawn to scale.

Detailed Description

Fig. 1 shows a schematic view of a cooling device 100 for a converter cabinet of a motor train unit according to an embodiment of the present invention. As shown in fig. 1, the cooling device 100 for the converter cabinet of the motor train unit comprises a heat exchanger 20 connected to the converter 10 of the motor train unit, wherein the heat exchanger 20 may be a finned water heat exchanger, for example. A power unit 30 is connected to the heat exchanger 20, and the power unit 30 may be, for example, a stepless water pump. The power element 30 can provide power, so that the high-temperature fluid in the converter 10 can flow through the heat exchanger 20, and then flows back to the converter 10 after being cooled by the heat exchanger 20, thereby realizing cooling of the converter 10.

As shown in fig. 1, the converter 10 is installed in a converter cabinet 11. The inlet 22 of the heat exchanger 20 is connected to the coolant outlet 12 of the converter 10 via a first line 25. At the same time, the drain 24 of the heat exchanger 20 is connected to the cooling fluid inlet 14 of the converter via a second line 26. Thus, the operator can adjust the distance between the heat exchanger 20 and the converter 10 by adjusting the lengths of the first line 25 and the second line 26, and can install the heat exchanger 20 in the empty space 12 in the converter cabinet 11.

Similarly, a third line 35 is also provided on the power element 30, and the power element 30 is connected to the second line 26 through the third line 35. Thus, the operator can also adjust the relative position between the power element 30 and the heat exchanger 20 by adjusting the third line 35, thereby installing the power element 30 in the vacant space within the converter cabinet 11.

In summary, the split connection of the heat exchanger 20 and the power element 30 can be freely adjusted by the first line 25, the second line 26 and the third line 35. Compare in current independent cooling device of connection in converter cabinet 11 outsidely, the utility model discloses a cooling device 100 for EMUs converter cabinet can be installed in converter cabinet 11 completely to make full use of converter cabinet 11 interior vacant space reaches the effect of practicing thrift installation space.

As shown in fig. 1, an air inlet 16 and an air outlet 18 for communicating with the outside are respectively provided on the inner walls of the converter cabinet 11 at the upper side and the lower side of the heat exchanger 20. Meanwhile, a negative pressure generating device 40 is arranged on one side of the heat exchanger close to the air outlet 18. The negative pressure generating device 40 may be a fan, for example.

Thus, the negative pressure generating device 40 can generate a lower negative pressure near the exhaust outlet 18 than at the intake opening 16, so as to form an air-cooled airflow passing through the heat exchanger 20 between the intake opening 16 and the exhaust outlet 18. The air-cooled airflow helps to further reduce the temperature of the heat exchanger 20 and the inverter 10, thereby improving the cooling effect.

In a preferred embodiment, the heat exchanger 20 and the negative pressure generating device 40 are arranged in series with the reactor 17 in the converter cabinet 11, and are arranged upstream and downstream of the reactor 17, respectively. With this arrangement, the air-cooled airflow can flow through the reactor 17 while flowing through the heat exchanger 20, and thus a cooling effect can be exerted on the reactor 17.

Compare in current connection at 11 outside independent cooling device of converter cabinet, the utility model discloses a cooling device 100 for EMUs converter cabinet can place converter cabinet 11 in with the runner of forced air cooling air current in to need not the independent wind channel that is linked together at the outside setting of converter cabinet 11 and cooling device. By this arrangement, the installation space required for the cooling device 100 can be further saved.

In a preferred embodiment, end caps (not shown) are further provided on the intake vent 16 and the exhaust vent 18, respectively, and the end caps are configured to be slidable with respect to the intake vent 16 and the exhaust vent 18, thereby adjusting the sizes of the intake vent 16 and the exhaust vent 18. It is easy to understand that, by adjusting the sizes of the air inlet 16 and the air outlet 18, the flow speed and the flow rate of the air-cooled airflow in the converter cabinet 11 can be freely increased or decreased, so as to adjust the cooling effect of the air-cooled airflow according to the actual temperature on site.

Further, a screen (not shown) is disposed on the air inlet 16. The screen can prevent solid particles or other impurities in the air from entering the converter cabinet 11 when the air enters the converter cabinet 11, so that the devices such as the heat exchanger 20 in the converter cabinet 11 are prevented from being polluted or damaged.

Similarly, a filter 251 is also provided between the heat exchanger 20 and the first line 25. The filter 251 can block solid impurities in the heat exchanger 20 from entering the current transformer 10, so that the risk of blockage failure of the current transformer 10 can be reduced. Preferably, the filter 251 is provided in a filter structure. The filter 251 of this structure is composed of a plurality of filter sheets, which not only has high filtering efficiency, but also helps to reduce the resistance of the filter. The experiment at scene shows, compare in current tubular filter, the utility model discloses a filter 251's filtration efficiency has improved about 6%, and the windage reduces about 50% to can greatly improve the fan performance, reduce the system noise, and can reduce energy resource consumption.

As shown in fig. 1, an expansion tank 50 is connected to the heat exchanger 20. The expansion tank 50 can communicate with the heat exchanger 20. Thus, when the liquid in the heat exchanger 20 increases in temperature to increase its volume, a part of the liquid can flow into the expansion tank 50, so that the pressure in the heat exchanger 20 can be kept stable, and the coolant can be normally circulated.

Fig. 2 is a schematic diagram of the heat exchanger 20 of the cooling device 100 for a converter cabinet of a motor train unit shown in fig. 1. As shown in fig. 2, the expansion tank 50 is connected to the heat exchanger 20 by welding, so as to be integrated with the heat exchanger 20.

Since the expansion tank 50 only provides a function of adjusting the pressure, it can be provided in a small size, and thus the volume of the heat exchanger 20 is not significantly increased when the expansion tank 50 and the heat exchanger 20 are integrated, and thus the installation of the heat exchanger 20 is not greatly affected. The expansion tank 50 and the heat exchanger 20 are directly integrated, so that the use of a connection line can be reduced, and the volume of the cooling apparatus 100 can be further reduced.

In a preferred embodiment, a controller 60 is further disposed in the expansion tank 50, and the controller 60 is configured to block the communication between the expansion tank 50 and the heat exchanger 20 and communicate the expansion tank 50 with the heat exchanger 20 when the liquid level in the expansion tank 50 is higher than a certain threshold value.

Fig. 3 is a schematic diagram of the controller 60 of the cooling device 100 for the converter cabinet of the motor train unit shown in fig. 1. As shown in fig. 3, the controller 60 is provided as a float level sensor 62. Compared with the existing liquid level sensor, the installation space required by the floating rod type liquid level sensor 62 is smaller, and the installation of the cooling device 100 in the converter cabinet is more facilitated.

As shown in FIG. 3, a channel 63 is defined in the float level sensor 62 for fluid communication. The expansion tank 50 is communicated with the heat exchanger 20 through the passage 63.

Meanwhile, a rotating shaft is provided at an axially middle portion of the float level sensor 62, so that a lower portion 64 of the float level sensor 62 adjacent to the heat exchanger 20 can rotate relative to an upper portion 65 adjacent to the expansion tank 50.

As shown in fig. 3, the float level sensor 62 is provided so as to be arranged in the horizontal direction. Thus, when the liquid level in the heat exchanger 20 is lower than the upper portion 65 adjacent to the expansion tank 50, the lower portion 64 can rotate relative to the upper portion 65 in a direction adjacent to the liquid level in the heat exchanger 20 by gravity until the lower portion 64 contacts the liquid level in the heat exchanger 20.

When the liquid level in the heat exchanger 20 rises, the lower portion 64 will rotate horizontally by the buoyancy of the liquid level until the liquid level in the heat exchanger 20 is level with the height of the upper portion 65. At this time, the upper part 65 and the lower part 64 of the float level sensor 62 are restored to the horizontal state.

As shown in fig. 3, a float valve 66 is also disposed in the passage 63 of the float level sensor 62. The float valve 66 is capable of shutting off the passage 63 when the lower portion 64 of the float level sensor 62 is in the full state, thereby shutting off communication between the heat exchanger 20 and the expansion tank 50. And keeps the passage 63 open when the lower portion 64 of the float-type level sensor 62 is restored to the horizontal state, thereby putting the heat exchanger 20 and the expansion tank 50 in communication.

Accordingly, the operator can control the liquid level when the heat exchanger 20 communicates with the expansion tank 50 by adjusting the mounting height of the upper portion 65 of the floating rod type liquid level sensor 62, thereby achieving accurate control.

It should be noted that the control principle of the float valve 66 is well known to those skilled in the art, and a detailed description thereof will be omitted.

The following briefly describes the operation of the cooling device 100 for a converter cabinet of a motor train unit according to the present invention.

The utility model discloses a cooling device 100 for EMUs converter cabinet is used for realizing the cooling to converter 10 and reactor 17 simultaneously. During the operation of the cooling device 100, the high-temperature liquid in the converter 10 flows into the heat exchanger 20 through the first pipeline 25, and is cooled in the heat exchanger 20, and then flows back into the converter 10 through the second pipeline 26, so that the cooling of the converter 10 is achieved.

At the same time, the power element 30 can generate an air-cooled airflow that flows through the converter 10 and the reactor 17 at the same time, thereby further cooling the converter 10 and the reactor 17.

During the installation of the cooling device 100, an operator can adjust the positions of the components by adjusting the lengths of the first pipeline 25, the second pipeline 26 and the third pipeline 35, so that the whole cooling device 100 can be installed in the converter cabinet 11, and the purpose of saving the installation space is achieved.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention in any way. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling device (100) for a converter cabinet of a motor train unit, comprising:

a heat exchanger (20) connected to a converter (10) of the motor train unit, and a power element (30) connected to the heat exchanger,

the liquid inlet of the heat exchanger is connected with the cooling liquid outlet of the converter through a first pipeline (25), the liquid outlet of the heat exchanger is connected with the cooling liquid inlet of the converter through a second pipeline (26), and the heat exchanger and the power element are connected with the second pipeline through a third pipeline (35), so that the heat exchanger, the power element and the converter can be arranged separately from each other, and the heat exchanger and the power element can be installed in the cabinet body of the converter cabinet.

2. The cooling device for the converter cabinet of the motor train unit according to claim 1, wherein an air inlet (16) and an air outlet (18) which are communicated with the outside are respectively arranged on the inner walls of the converter cabinet on the upper side and the lower side of the heat exchanger, and a negative pressure generating device is further arranged on one side of the heat exchanger close to the air outlet and can generate negative pressure so as to form air-cooled airflow flowing through the heat exchanger between the air inlet and the air outlet.

3. The cooling device for a converter cabinet of a motor train unit according to claim 2, wherein the heat exchanger and the negative pressure generating device are arranged in series with a reactor (17) in the converter cabinet respectively and are arranged upstream and downstream of the reactor respectively, so that the air-cooled airflow can flow through the reactor.

4. The cooling device for the converter cabinet of the motor train unit according to claim 3, wherein end covers are further disposed on the air inlet and the air outlet, respectively, and the end covers are configured to slide relative to the air inlet and the air outlet, so as to adjust the sizes of the air inlet and the air outlet.

5. The cooling device for a converter cabinet of a motor train unit according to any one of claims 1 to 4, wherein an expansion tank (50) capable of communicating with the heat exchanger is further connected to the heat exchanger.

6. The cooling device for a converter cabinet of a motor train unit according to claim 5, wherein the expansion tank is connected to the heat exchanger by welding so as to be integrally formed with the heat exchanger.

7. The cooling device for a converter cabinet of a motor train unit according to claim 6, wherein a controller (60) is further arranged in the expansion water tank, and the controller is configured to cut off the communication between the expansion water tank and the heat exchanger and communicate the expansion water tank with the heat exchanger when the liquid level of the expansion water tank is higher than a certain threshold value.

8. The cooling device for a converter cabinet of a motor train unit according to claim 7, wherein the liquid level sensor is a floating rod type liquid level sensor, and the floating rod type liquid level sensor is horizontally arranged in the heat exchanger.

9. The cooling device for the converter cabinet of the motor train unit according to any one of claims 2 to 4, wherein a screen is further arranged on the air inlet.

10. The cooling device for a converter cabinet of a motor train unit according to any one of claims 1 to 4, wherein a filter is further arranged between the heat exchanger and the first pipeline, and the filter is arranged in a filter structure.