CN214800376U

CN214800376U - Heat radiation structure of rail transit vehicle electrical equipment

Info

Publication number: CN214800376U
Application number: CN202022005612.3U
Authority: CN
Inventors: 秦井武; 谭英徐; 李亮; 刘其猛; 贺超
Original assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Current assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-11-19
Anticipated expiration: 2030-09-14

Abstract

The utility model provides a heat dissipation structure of rail transit vehicle electrical equipment, which comprises a main box body, and a power module, an air-cooled radiator, a reactor, a fan assembly, a first air guide assembly and a second air guide assembly which are respectively arranged in the main box body; the first air guide assembly is used for separating a first air flow channel from the main box body, the second air guide assembly is used for separating a second air flow channel from the main box body, and the reactor is positioned in the second air flow channel; the power module is fixed on the air-cooled radiator, and the air-cooled radiator is positioned in the first airflow channel; the fan assembly is located between the first airflow channel and the second airflow channel and forms cooling airflow which flows through the first airflow channel and the second airflow channel in sequence through disturbed airflow. The utility model discloses can carry out synchronous forced air cooling heat dissipation to power module and reactor, improve the utilization ratio of fan subassembly, and the overall arrangement design of being convenient for has higher space utilization.

Description

Heat radiation structure of rail transit vehicle electrical equipment

Technical Field

The embodiment of the utility model provides a relate to power electronic equipment field, more specifically say, relate to a rail transit vehicle electrical equipment's heat radiation structure.

Background

In the rail transit vehicle electrical equipment, because the rail transit vehicle electrical equipment has larger heat productivity during operation, in order to ensure the stability of operation, the rail transit vehicle electrical equipment has higher heat dissipation requirements on a power unit and magnetic components (such as a reactor, a transformer and the like).

At present, the existing rail transit vehicle electrical equipment mostly adopts a separated design, namely, a power unit and a reactor (namely, a part of magnetic components) are separately arranged in different boxes. Because the power unit and the reactor are located in different boxes, the reactor generally radiates heat in a natural cooling mode, and the power module radiates heat in a forced air cooling mode by installing a fan assembly in the corresponding box.

However, the heat dissipation effect of the heat dissipation mode of the existing rail transit vehicle electrical equipment is poor, the utilization rate of the fan assembly is low, and forced air cooling heat dissipation cannot be performed on the electric reactor at the same time. Moreover, the split design is not favorable for reducing the structure volume, and simultaneously, the structure of the electric equipment of the existing rail transit vehicle is also complicated, the space utilization rate is reduced, and the internal layout design is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a not good, the low, the structure of structure complicacy, the space utilization of fan subassembly of the radiating effect to above-mentioned current rail transit vehicle electrical equipment and influence the problem of overall arrangement design, provide a rail transit vehicle electrical equipment's heat radiation structure.

The embodiment of the utility model provides a technical scheme who solves above-mentioned technical problem provides a heat radiation structure of rail transit vehicle electrical equipment, including the main tank body, and install respectively power module, air-cooled radiator, reactor, fan subassembly, first wind-guiding subassembly and second wind-guiding subassembly in the main tank body; the first air guide assembly is used for separating a first air flow channel from the main box body, and the second air guide assembly is used for separating a second air flow channel from the main box body; the power module is fixed on the air-cooled radiator, at least one part of the air-cooled radiator is positioned in the first airflow channel, and the reactor is positioned in the second airflow channel; the fan assembly is located between the first airflow channel and the second airflow channel and forms cooling airflow which flows through the first airflow channel and the second airflow channel in sequence through disturbed airflow.

Preferably, the second air flow channel and the first air flow channel are in different directions, and the fan assembly is adjacent to the back plate of the main box body; the end of the first air flow channel, which is far away from the fan assembly, is a first end, and the opening of the first end of the first air flow channel is positioned on the front panel of the main box body.

Preferably, the fan assembly comprises a centrifugal fan, a rotating shaft of the centrifugal fan is horizontally arranged, and the first air flow channel is arranged along the axial direction of the centrifugal fan; the opening of the first end of the first air flow channel is communicated with the air inlet of the centrifugal fan, the opening of the second end of the first air flow channel is communicated with the outside of the main box body, and air outside the main box body is sucked into the first air flow channel through the centrifugal fan.

Preferably, a first end of the second airflow channel is communicated with an air outlet of the centrifugal fan, a second end of the second airflow channel is communicated with the outside of the main box body, and air in the second airflow channel is discharged out of the main box body through the centrifugal fan; the reactor is adjacent to a first end of the second airflow channel.

Preferably, the second end of the second air flow channel is located at a side and/or bottom of the main case.

Preferably, the first air flow channel comprises an air cooling section and an air guide section, the air cooling section is connected between the centrifugal fan and the air guide section, and an opening of the air guide section is positioned on the surface of the main box body;

at least one part of the air-cooled radiator is positioned in the air-cooled section, and the air-cooled section deviates from the center of an air inlet of the centrifugal fan; the cross section of the air guide section is gradually increased from the joint of the air cooling section to the surface of the main box body, and the air cooling section is positioned on the side part of the power module.

Preferably, an air filter is arranged at an opening of the air guide section, and the air filter comprises a steel wire filter screen and a filter main body overlapped with the steel wire filter screen.

Preferably, the air-cooled radiator includes a mounting portion and a fin portion, and the fin portion is inserted into the first air flow passage by passing through the first air guiding assembly; the power module is fixed on one side of the mounting part, which is far away from the fin part, and the first air flow channel is avoided through the mounting part;

the fin portion is constituted by a plurality of fins provided along the longitudinal direction of the first air flow passage, respectively.

Preferably, an opening of a second end of the second airflow channel is located on a side plate of the main box body adjacent to the front panel, an air deflector in a louver structure is arranged at an opening of the second airflow channel far away from the fan assembly, and cooling air in the second airflow channel is discharged out of the second airflow channel obliquely below through the air deflector.

Preferably, a maintenance door plate and an air outlet door plate are arranged on the side wall of the main box body, and when the maintenance door plate is detached, the air-cooled radiator is exposed out of the side wall of the main box body; when the air outlet door plate is detached, the electric reactor is exposed out of the side wall of the main box body.

The utility model discloses rail transit vehicle electrical equipment's heat radiation structure has following beneficial effect: the first air guide assembly and the second air guide assembly are arranged, the first air flow channel is separated from the main box body by the first air guide assembly, the second air flow channel is separated from the main box body by the second air guide assembly, and then the fan assembly runs in the first air flow channel and the second air flow channel to form cooling air flow, so that synchronous air cooling heat dissipation can be performed on the power module and the reactor, the heat dissipation effect is higher, meanwhile, the utilization rate of the fan assembly can be greatly improved, the practicability is higher, the overall structure is simple, and higher manufacturing cost is not needed; in addition, the installation position of the fan assembly cannot be limited, and the power module and the reactor can be installed in the main box body together, so that the layout design in the main box body is facilitated, the space utilization rate is improved, the size can be effectively reduced, and the application range is enlarged.

Drawings

Fig. 1 is a schematic structural view of a longitudinal section of a heat dissipation structure of electrical equipment of a rail transit vehicle provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a vertical projection of a heat dissipation structure of electrical equipment of a rail transit vehicle provided in an embodiment of the present invention;

fig. 3 is a schematic structural view of a transverse section of a heat dissipation structure of electrical equipment of a rail transit vehicle provided in an embodiment of the present invention;

fig. 4 is a schematic partial structural view of an air deflector according to an embodiment of the present invention;

fig. 5 is a schematic exploded view of an air filter according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a vertical projection of a partial section of an air filter according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, is a schematic structural diagram of a heat dissipation structure of a rail transit vehicle electrical apparatus provided by an embodiment of the present invention, the heat dissipation structure of the rail transit vehicle electrical apparatus can be applied to the field of power electronic apparatuses, especially in a traction converter of a rail transit vehicle (for example, a subway, a light rail, etc.).

Referring to fig. 2, the heat dissipation structure of the electrical equipment of the rail transit vehicle in the present embodiment includes a main box 1, a power module 2, an air-cooled radiator 3, a reactor 4, a fan assembly 5, a first air guide assembly 6, and a second air guide assembly 7, where the power module 2, the air-cooled radiator 3, the reactor 4, the fan assembly 5, the first air guide assembly 6, and the second air guide assembly 7 are respectively installed in the main box 1.

Specifically, the first air guiding assembly 6 divides the main box 1 into the first air flow channel 61, the power module 2 is fixed on the air-cooled radiator 3, and at least a part of the air-cooled radiator 3 (preferably, the heat dissipation part of the air-cooled radiator 3) is located in the first air flow channel 61, so that the power module 2 can be efficiently cooled and dissipated by air cooling by means of the air-cooled radiator 3 and the first air flow channel 61 without assembling the power module 2 into the first air flow channel 61.

In addition, the second air guiding assembly 7 divides the second air flow channel 71 in the main box body 1, and the reactor 4 is positioned in the second air flow channel 71, so that the reactor 4 is cooled by air through the second air flow channel 71, the heat dissipation efficiency of the reactor 4 is improved, and the use of the reactor 4 is more stable and reliable compared with a natural cooling heat dissipation mode.

Particularly, the fan assembly 5 is disposed between the first airflow channel 61 and the second airflow channel 71, and forms cooling airflow sequentially flowing through the first airflow channel 61 and the second airflow channel 71 by disturbing the airflow, so as to achieve the air-cooling and heat-dissipating functions of the first airflow channel 61 and the second airflow channel 71, and ensure that the power module 2 and the reactor 4 can be effectively cooled by air-cooling and heat-dissipating.

The heat dissipation structure of the rail transit vehicle electrical equipment is provided with the first air guide assembly 6 and the second air guide assembly 7, the first air guide assembly 6 divides the main box body 1 into the first air flow channel 61, the second air guide assembly 7 divides the main box body 1 into the second air flow channel 71, and then the fan assembly 5 runs in the first air flow channel 61 and the second air flow channel 71 to form cooling air flow; thereby can carry out synchronous forced air cooling heat dissipation to power module 2 and reactor 4, can make the radiating effect higher, still can improve fan assembly 5's utilization ratio simultaneously greatly, have higher practicality. Moreover, the heat dissipation structure is simple and reasonable in structure, convenient and fast to process, and high manufacturing cost is not needed.

In addition, because fan subassembly 5 accessible first airflow channel 61 and second airflow channel 71 communicate with the outside of main tank 1, consequently, fan subassembly 5's mounted position can not receive the restriction, and power module 2 and reactor 4 can be installed in main tank 1 together, be favorable to the overall arrangement design in main tank 1, in order to improve space utilization, and then can increase the space volume of other cavities in the main tank 1, be convenient for the dismouting operation of other electronic components, of course also can make the volume effectively reduce, thereby enlarge application scope.

The utility model discloses an in an embodiment, above-mentioned second airflow channel 71 is perpendicular with first airflow channel 61 to can make first air guide component 6, fan subassembly 5 and second air guide component 7 not arrange the setting along same direction, with the volume of reduction on single side, avoid setting up along same direction and cause the bulky and restricted the structural design of main tank 1 of this direction, and still more be favorable to the overall arrangement design in the main tank 1 like this, reduce the influence to other electronic components's the installation of arranging.

In practical applications, it is preferable that the fan module 5 is adjacent to the back plate 11 of the main box 1, and the front panel 12 of the main box 1 is provided with an opening, which is connected to the first air flow channel 61 (of course, the opening may be specifically an opening at the first end of the first air flow channel 61, and the first end of the first air flow channel 61 is an end far from the fan module 5), that is, the fan module 5 is installed close to the back plate 11 and close to the front panel 12. Of course, the installation layout of the fan assembly 5 and the first air guide assembly 6 can be specifically adjusted according to actual conditions.

As shown in connection with fig. 3, the fan assembly 5 includes a centrifugal fan 51, and the turbulent air flow is driven by the centrifugal fan 51 to form the cooling air flow in the first air flow path 61 and the second air flow path 71. The direction of the air inlet of the centrifugal fan 51 is generally perpendicular to the direction of the air outlet, so that the second air flow channel 71 and the first air flow channel 61 can be arranged perpendicularly.

The utility model discloses a further embodiment, centrifugal fan 51 is installed in main tank 1 with the mode that the pivot set up along the horizontal direction, can make first airflow channel 61 and second airflow channel 71 all set up with the mode that is in centrifugal wind channel 51's the same horizontal plane like this to can reduce the vertical ascending size of main tank 1, make the rail transit vehicle electrical equipment that uses above-mentioned heat radiation structure more be favorable to installing rail transit vehicle's bottom, avoid rail transit vehicle electrical equipment's thickness volume great and restricted its application in rail transit vehicle, the improvement practicality.

Further, the first end of the first air flow channel 61 is communicated with the air inlet of the centrifugal fan 51, and the second end of the first air flow channel 61 is communicated with the outside of the main box 1, so that air outside the main box 1 can be sucked into the first air flow channel 61 through the centrifugal fan 51 to form cooling air flow in the first air flow channel 61, heat on the air-cooled radiator 3 is transferred by the cooling air flow, and the power module 2 (heat of the power module 2 is transferred to the air-cooled radiator 3 to achieve heat dissipation and cooling) and the air-cooled radiator 3 are efficiently dissipated and cooled.

Particularly, the first air flow channel 61 is preferably arranged along the axial direction of the centrifugal fan 51, that is, the first air flow channel 61 is arranged along the direction of the air inlet of the centrifugal fan 51, so that the air outside the main box 1 can more smoothly enter the first air flow channel 61, the flowing efficiency of the cooling air flow is improved, the heat dissipation capability of the heat dissipation structure is greatly enhanced, and the heat dissipation effect is improved.

In addition, the first end of the second airflow channel 71 is communicated with the air outlet of the centrifugal fan 51, and the second end of the second airflow channel 71 is communicated with the outside of the main box 1, so that the air in the second airflow channel 71 can be discharged out of the main box 1 through the centrifugal fan 51, that is, the cooling airflow formed by the air sucked into the first airflow channel 61 is discharged out of the main box 1 through the second airflow channel 71, and the air cooling and heat dissipation of the reactor 4 are realized.

In practical applications, the cross-sectional area of the portion of the second air flow channel 71 for mounting the reactor 4 may be specifically sized according to practical situations. For example, the cross-sectional area of the portion of the second air flow channel 71 for mounting the reactor 4 is smaller than twice the cross-sectional area of the reactor 4, and the cross-sectional area of the portion of the second air flow channel 71 for mounting the reactor 4 is larger than or equal to twice the cross-sectional area of the discharge end of the fan assembly 5. Further, the reactor 4 is preferably disposed adjacent to the first end of the second airflow path 71, which effectively improves the air-cooling heat dissipation effect on the reactor 4.

Because the heat radiation structure is a one-way air duct, the fan assembly 5 can be arranged in a way of being far away from the center of the main box body 1, so that the layout in the main box body 1 is more designable. In practical applications, the length of the second air flow channel 71 is preferably not more than twice the length of the reactor 4, so that the volume of the second air guiding assembly 7 can be reduced while the heat dissipation effect on the reactor 4 is ensured, and the fan assembly 5 can be arranged close to the side plate 13 of the main box 1 where the second end of the second air flow channel 71 is located.

As shown in fig. 4, the second end of the second air flow path 71 is located at the side of the main casing 1. Specifically, the second end (i.e. the end far away from the fan assembly 5) of the second airflow channel 71 may be opened on the side plate 13 of the main box 1 adjacent to the front panel 12, which is beneficial to improving the integration of the first air guiding assembly 6, the fan assembly 5 and the second air guiding assembly 7, and improving the space utilization rate in the main box 1. Furthermore, the air deflector 14 having a louver structure is disposed at the opening of the second end of the second airflow channel 71, and the air guide port 141 of the air deflector 14 is disposed downward, so that the cooling air in the second airflow channel 71 can be discharged obliquely downward through the air deflector 14, and thus, when the cooling air is discharged to the external environment of the main box 1, other electrical devices installed outside the main box 1 are not directly blown, and the peripheral electrical devices are prevented from being affected.

In an embodiment of the present invention, the first air flow path 61 includes an air-cooling section 611 and an air guiding section 612, wherein the air-cooling section 611 is connected between the centrifugal fan 51 and the air guiding section 612, and an opening of the air guiding section 612 is located on a surface of the main casing 1. At least a part of the air-cooled radiator 3 is located in the air-cooled section 611, and the air-cooled section 611 is offset from the center of the air inlet of the centrifugal fan 51.

Specifically, the air-cooled section 611 is located above the power module 2, so that the first air guide assembly 6 can be arranged close to the back plate 11 of the main box body 1, the installation space of the power module 2 below the first air guide assembly 6 is increased, the dismounting operation of the power module 2 and the air-cooled radiator 3 is facilitated, a large vacant space between the first air guide assembly 6 and the back plate 11 of the main box body 1 is avoided, and the space utilization rate can be improved. Of course, the installation mode and the structural design of the first air guiding assembly 6 can be adjusted accordingly according to actual conditions.

In order to ensure the heat dissipation capability of the first fluid channel 61 so that the air outside the main casing 1 can enter the air-cooled section 611 more efficiently, it is preferable that the cross section of the air guiding section 612 is gradually increased from the joint with the air-cooled section 611 to the surface of the main casing 1.

With reference to fig. 5, the air filter 8 is disposed at the opening of the air guiding section 612, and the air filter 8 preferably adopts a manner that the steel wire filtering net 81 is overlapped with the filter main body 82 to realize double-layer filtering, so that not only the filtering effect can be effectively improved, but also the service life of the filter element in the filter main body 82 can be prolonged, and the steel wire filtering net 81 is used for filtering, so that the steel wire filtering net 81 can be directly detached and cleaned during maintenance, and the operation is convenient and fast. Because raise dust easily and seasonal batting appear in the environment of rail transit vehicle operation, consequently the preferred higher steel wire filter screen 81 of mesh number that uses can effectively solve the problem of raise dust and batting like this.

As shown in fig. 6, the filter body 82 may specifically adopt a centrifugal sediment filter, which includes a first filter element 821, a second filter element 822, and a third filter element 823, and the first filter element 821, the second filter element 822, and the third filter element 823 are arranged in sequence from outside (i.e., a side adjacent to the wire screen 81) to inside (i.e., a side away from the wire screen 81). Of course, the structure and filtering level of the filter body 82 can be specifically adjusted according to actual conditions.

In another embodiment of the present invention, the air-cooled heat sink 3 includes the mounting portion 31 and the fin portion 32, and the fin portion 32 is located in the first airflow channel 61, so that the heat on the fin portion 32 can be transferred away by the cooling airflow in the first airflow channel 61, thereby achieving the heat dissipation and cooling of the air-cooled heat sink 3. Specifically, the power module 2 is fixed to the side of the mounting portion 31 away from the fin portion 32, and the first air flow path 61 is avoided by the mounting portion 31, whereby the power module 2 is protected, dust is prevented from accumulating on the power module 2, and heat generated by the power module 2 can also be discharged through the air-cooled heat sink 3.

In particular, the fin portion 32 is formed of a plurality of fins each arranged along the length direction of the first air flow path 61, whereby the heat exchange area of the air-cooled heat sink 3 exposed to the first air flow path 61 can be increased to increase the heat radiation capability of the air-cooled heat sink 3. In practical applications, the cross-sectional area of the air-cooled heat sink 3 is preferably greater than two-thirds of the cross-sectional area of the main portion of the first airflow channel 61, so that the cooling airflow in the first airflow channel 61 can fully contact with the air-cooled heat sink 3, and the air-cooled heat dissipation effect is improved.

The side wall of the main box body 1 is provided with a maintenance door plate and an air outlet door plate, and when the disassembly door plate is disassembled, the air-cooled radiator 3 is exposed out of the side wall of the main box body 1, so that the air-cooled radiator 3 can be cleaned and maintained. In addition, when the air outlet door panel is detached, the reactor 4 is exposed to the side wall of the main case 1, and the reactor 4 can be cleaned and maintained. In practical application, preferably will maintain the door plant and the air outlet door plant passes through the fix with screw on the lateral wall of main tank body 1, the dismouting of being convenient for has effectively improved maintenance efficiency, has higher practicality like this in the abluent track transportation vehicles electrical equipment of needs frequent maintenance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A heat dissipation structure of rail transit vehicle electrical equipment is characterized by comprising a main box body, and a power module, an air-cooled radiator, a reactor, a fan assembly, a first air guide assembly and a second air guide assembly which are respectively arranged in the main box body; the first air guide assembly is used for separating a first air flow channel from the main box body, and the second air guide assembly is used for separating a second air flow channel from the main box body; the power module is fixed on the air-cooled radiator, at least one part of the air-cooled radiator is positioned in the first airflow channel, and the reactor is positioned in the second airflow channel; the fan assembly is positioned between the first airflow channel and the second airflow channel and forms cooling airflow which sequentially flows through the first airflow channel and the second airflow channel by disturbing the airflow; the fan assembly comprises a centrifugal fan, the first air flow channel is arranged along the axial direction of the centrifugal fan, and the first air flow channel is arranged along the direction of an air inlet of the centrifugal fan.

2. The heat dissipation structure of rail transit vehicle electrical equipment of claim 1, wherein the second air flow channel is in a different direction than the first air flow channel, and the fan assembly is adjacent to a back plate of the main box; the end of the first air flow channel, which is far away from the fan assembly, is a first end, and the opening of the first end of the first air flow channel is positioned on the front panel of the main box body.

3. The heat dissipation structure of rail transit vehicle electrical equipment according to claim 1 or 2, wherein a rotation shaft of the centrifugal fan is horizontally disposed; the opening of the first end of the first air flow channel is communicated with the air inlet of the centrifugal fan, the opening of the second end of the first air flow channel is communicated with the outside of the main box body, and air outside the main box body is sucked into the first air flow channel through the centrifugal fan.

4. The heat dissipation structure of the rail transit vehicle electrical equipment as claimed in claim 3, wherein a first end of the second air flow channel is communicated with an air outlet of the centrifugal fan, a second end of the second air flow channel is communicated with the outside of the main box body, and air in the second air flow channel is discharged out of the main box body through the centrifugal fan; the reactor is adjacent to a first end of the second airflow channel.

5. The heat dissipation structure of rail transit vehicle electrical equipment of claim 4, wherein the second end of the second airflow channel is located at a side and/or bottom of the main box.

6. The heat dissipation structure of the rail transit vehicle electrical equipment as claimed in claim 3, wherein the first air flow passage comprises an air cooling section and an air guiding section, the air cooling section is connected between the centrifugal fan and the air guiding section, and an opening of the air guiding section is located on the surface of the main box body;

7. The heat dissipation structure for electrical equipment of rail transit vehicles as claimed in claim 6, wherein an air filter is provided at the opening of the air guiding section, and the air filter includes a steel wire mesh and a filter body stacked on the steel wire mesh.

8. The heat dissipation structure for rail transit vehicle electrical equipment according to claim 1, wherein the air-cooled radiator includes a mounting portion and a fin portion, and the fin portion is inserted into the first air flow passage by passing through the first air guide assembly; the power module is fixed on one side of the mounting part, which is far away from the fin part, and the first air flow channel is avoided through the mounting part;

9. The heat dissipation structure of the rail transit vehicle electrical equipment as claimed in claim 4, wherein an opening of a second end of the second airflow channel is located on a side plate of the main box body adjacent to the front panel, and an air deflector in a louver structure is arranged at an opening of the second airflow channel away from the fan assembly, and the cooling air in the second airflow channel is discharged out of the second airflow channel obliquely and downwards through the air deflector.

10. The heat dissipation structure of electrical equipment of rail transit vehicles according to claim 9, wherein a maintenance door panel and an air outlet door panel are provided on a side wall of the main box body, and when the maintenance door panel is detached, the air-cooled radiator is exposed to the side wall of the main box body; when the air outlet door plate is detached, the electric reactor is exposed out of the side wall of the main box body.