Control cabinet group of wind generating set

Abstract

The utility model relates to a control cabinet group of a wind generating set. The control cabinet group comprises a plurality of heat dissipation pieces. The heat dissipation pieces comprise the first heat dissipation piece, the second heat dissipation piece, the third heat dissipation piece and the fourth heat dissipation piece. And the first heat dissipation piece is arranged on a third side plate, deviating from the PLC control cabinet, of the grid-connected control cabinet. The second heat dissipation piece is arranged on the first side plate. The first heat dissipation piece and the second heat dissipation piece are consistent in height. The third heat dissipation piece is arranged on the first side plate, and the third heat dissipation piece is arranged below the second heat dissipation piece. The first heat dissipation piece, the second heat dissipation piece and the third heat dissipation piece are used for forming first circulating heat dissipation airflow between the grid-connected control cabinet and the PLC control cabinet. And the fourth heat dissipation piece is arranged on the front plate of the frequency conversion control cabinet. An air inlet is formed in a back plate of the frequency conversion control cabinet. And the fourth heat dissipation piece and the air inlet are used for forming a second circulating heat dissipation airflow in the frequency conversion control cabinet. According to the control cabinet group, the heat dissipation efficiency of the control cabinet group can be effectively improved through the heat dissipation pieces.

Description

Technical Field

[0001] This disclosure relates to the field of heat dissipation technology for wind turbine generator control cabinets, specifically, to a control cabinet assembly for a wind turbine generator. Background Technology

[0002] With the continuous development of wind power generation technology and the increasing capacity of individual wind turbine units, the heat generated inside the control cabinet of wind turbine units has increased significantly, and traditional heat dissipation methods are no longer sufficient to meet the requirements for efficient heat dissipation. As the core control component of wind turbine units, the heat dissipation performance of the control cabinet directly affects the stability and service life of the entire system. Utility Model Content

[0003] The purpose of this disclosure is to provide a control cabinet assembly for a wind turbine generator set to effectively improve the heat dissipation efficiency of the control cabinet assembly, thereby at least partially solving the related technical problems.

[0004] To achieve the above objectives, this disclosure provides a control cabinet assembly for a wind turbine generator set, including a grid-connected control cabinet, a frequency converter control cabinet, and a PLC control cabinet arranged between the grid-connected control cabinet and the frequency converter control cabinet. The grid-connected control cabinet and the PLC control cabinet share a first side panel, and the frequency converter control cabinet and the PLC control cabinet share a second side panel. The wind turbine generator set control cabinet assembly further includes:

[0005] Multiple heat sinks, including a first heat sink, a second heat sink, a third heat sink, and a fourth heat sink;

[0006] The first heat sink is placed on the third side panel of the grid-connected control cabinet away from the PLC control cabinet;

[0007] The second heat sink is placed on the first side plate, and the first heat sink and the second heat sink are at the same height;

[0008] The third heat sink is placed on the first side plate and is located below the second heat sink;

[0009] The first heat sink, the second heat sink, and the third heat sink are used to form a first circulating heat dissipation airflow between the grid-connected control cabinet and the PLC control cabinet, and an air outlet is provided on the third side plate.

[0010] The fourth heat sink is located on the front panel of the frequency converter control cabinet, and an air inlet is provided on the back panel of the frequency converter control cabinet. The fourth heat sink and the air inlet are used to form a second circulating heat dissipation airflow in the frequency converter control cabinet.

[0011] Optionally, the plurality of heat dissipation components further includes a fifth heat dissipation component, which is disposed on the front panel of the frequency converter control cabinet, and the vertical projections of the fourth heat dissipation component and the fifth heat dissipation component on the back panel are respectively located on both sides of the air inlet.

[0012] Optionally, the air inlet is arranged adjacent to the second side panel, the front panel includes two side-by-side switch doors, and the fourth heat sink and the fifth heat sink are disposed on one of the switch doors adjacent to the second side panel and are arranged diagonally along the switch door.

[0013] Optionally, the plurality of heat dissipation components further includes a sixth heat dissipation component, which is placed on the bottom plate of the frequency converter control cabinet and is able to form a third circulating heat dissipation airflow within the frequency converter control cabinet. The airflow direction of the second circulating heat dissipation airflow and the airflow direction of the third circulating heat dissipation airflow intersect each other.

[0014] Optionally, the number of the sixth heat sink is two, arranged side by side, and the two sixth heat sinks are arranged adjacent to the second side plate.

[0015] Optionally, a filter screen is also provided at the air inlet.

[0016] Optionally, the control cabinet assembly further includes a first flow guiding structure, which includes a first flow guiding plate and a first connecting plate connected to the first flow guiding plate. The first flow guiding plate is connected to the third side plate through the first connecting plate.

[0017] Optionally, the control cabinet assembly further includes a second airflow guiding structure, which includes a second airflow guiding plate and a second connecting plate connected to the second airflow guiding plate. The second airflow guiding plate is connected to the air inlet via the second connecting plate.

[0018] Optionally, the heat sink includes a water-cooled plate and a fan connected to one side of the water-cooled plate.

[0019] Optionally, the water-cooled plate is provided with a connecting lug having a mounting hole, the mounting hole being for a connector to pass through to connect the heat sink to the first side plate, or the second side plate, or the third side plate, or the front plate of the frequency converter control cabinet, or the bottom plate of the frequency converter control cabinet.

[0020] The aforementioned technical solution, namely the control cabinet assembly of the wind turbine generator set, effectively and reliably cools the grid-connected control cabinet, PLC control cabinet, and frequency converter control cabinet through the first, second, and third heat sinks and the second circulating heat sink formed by the fourth heat sink and the air inlet, ensuring the reliable operation of the equipment within each cabinet. This disclosed technical solution utilizes computational fluid dynamics simulation technology to further analyze the airflow within the cabinet. Compared to related technologies that merely install fans on the back panel of each cabinet to achieve heat dissipation, this avoids the problem of a relatively unidirectional airflow and low heat dissipation efficiency caused by this method.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. Attached Figure Description

[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0023] Figure 1 This is a structural schematic diagram of a control cabinet assembly provided according to an embodiment of this disclosure;

[0024] Figure 2 This is a structural schematic diagram of a frequency converter control cabinet provided according to an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of the structure of a heat sink provided according to an embodiment of the present disclosure.

[0026] Explanation of reference numerals in the attached figures

[0027] 100. Control cabinet assembly;

[0028] 1. Grid-connected control cabinet;

[0029] 2. PLC control cabinet;

[0030] 3. Variable frequency control cabinet; 31. Air inlet; 32. Front panel; 321. Door switch; 33. Base plate; 34. Filter screen; 35. Back panel;

[0031] 4. First side panel;

[0032] 5. Second side panel;

[0033] 6. Heat sink; 61. First heat sink; 62. Second heat sink; 63. Third heat sink; 64. Fourth heat sink; 65. Fifth heat sink; 66. Sixth heat sink; 67. Water cooling plate; 68. Fan; 69. Connecting lug; 691. Mounting hole;

[0034] 7. First flow guiding structure; 71. First connecting plate; 72. First flow guiding plate;

[0035] 8. Second flow guide structure; 81. Second connecting plate; 82. Second flow guide plate;

[0036] 9. Third side panel. Detailed Implementation

[0037] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0038] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer contours of the corresponding components; furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another.

[0039] The inventors discovered through research that a wind turbine generator control cabinet assembly can include a grid-connected control cabinet, a frequency converter control cabinet, and a PLC control cabinet arranged sequentially between the grid-connected control cabinet and the frequency converter control cabinet. Since the PLC control cabinet houses numerous devices such as air switches, power supplies, PLCs, relays, terminal blocks, cable trays, signal isolators, power distributors, and safety barriers, it can be considered the core component of the entire wind turbine generator control cabinet assembly. For reasons of ease and rationality in wiring, many devices within the PLC control cabinet are not limited to the back panel of the control cabinet; they may even occupy part of the side panel adjacent to the frequency converter control cabinet. To ensure that some devices within the PLC control cabinet can be reliably placed on the side panel, the PLC control cabinet and the frequency converter control cabinet are usually arranged independently to ensure sufficient installation space on the side panel. Based on this, a fan can be installed on the back panel of each control cabinet to achieve the purpose of heat dissipation. However, this heat dissipation method results in a relatively unidirectional airflow direction inside the control cabinet, which cannot achieve reliable circulation and rapid heat dissipation, thus leading to a relatively low heat dissipation efficiency of the entire wind turbine control cabinet group.

[0040] To solve the above-mentioned technical problems, according to an embodiment of this disclosure, such as... Figure 1As shown, a control cabinet assembly 100 for a wind turbine generator set is provided. The control cabinet assembly 100 may include a grid-connected control cabinet 1, a frequency converter control cabinet 3, and a PLC control cabinet 2 arranged between the grid-connected control cabinet 1 and the frequency converter control cabinet 3. The grid-connected control cabinet 1 and the PLC control cabinet 2 share a first side panel 4. The frequency converter control cabinet 3 and the PLC control cabinet 2 share a second side panel 5. The control cabinet assembly 100 may also include multiple heat sinks 6. The multiple heat sinks 6 include a first heat sink 61, a second heat sink 62, a third heat sink 63, and a fourth heat sink 64. The first heat sink 61 is placed on the third side panel 9 of the grid-connected control cabinet 1, away from the PLC control cabinet 2. The second heat sink 62 is placed on the first side panel 4. The first heat sink 61 and the second heat sink 62 are at the same height. The third heat sink 63 is placed on the first side panel 4, and the third heat sink 63 is positioned below the second heat sink 62. The first heat sink 61, the second heat sink 62, and the third heat sink 63 are used to form a first circulating cooling airflow A between the grid-connected control cabinet 1 and the PLC control cabinet 2. An air outlet (not shown in the figure) is provided on the third side plate 9. It should be noted that the air outlet on the third side plate 9 can be constructed as an air outlet grille on the side plate of the grid-connected control cabinet 1. Of course, it is understood that the air outlet can also be other suitable structures, and no limitation is made here. Those skilled in the art can design according to actual conditions. A fourth heat sink 64 is provided on the front plate 32 of the frequency converter control cabinet 3. An air inlet 31 is provided on the back plate 35 of the frequency converter control cabinet 3. The fourth heat sink 64 and the air inlet 31 are used to form a second circulating cooling airflow B within the frequency converter control cabinet 3.

[0041] In the technical solution of this disclosure, the first circulating cooling airflow A formed by the first heat sink 61, the second heat sink 62, and the third heat sink 63, and the second circulating cooling airflow B formed by the fourth heat sink 64 and the air inlet 31, can effectively and reliably dissipate heat from the grid-connected control cabinet 1, the PLC control cabinet 2, and the frequency converter control cabinet 3, thereby ensuring the reliable operation of the equipment inside each cabinet. In the technical solution of this disclosure, computational fluid dynamics simulation technology is used to further analyze the airflow within the cabinet. Compared to related technologies that only install fans 68 on the back panel 35 of each cabinet to achieve cabinet heat dissipation, this avoids the problem of relatively unidirectional airflow and low heat dissipation efficiency caused by this type of heat dissipation method. Specifically, when the heat sink 6 includes a fan 68, the first heat sink 61 can blow air into the grid-connected control cabinet 1, the second heat sink 62 can further blow air into the PLC control cabinet 2, and the third heat sink 63 can further blow air from the PLC control cabinet 2 into the grid-connected control cabinet 1, thus forming the aforementioned first circulating cooling airflow A. The fourth heat sink 64 can blow air into the frequency converter control cabinet 3 through the air inlet 31 to form a second circulating heat dissipation airflow B.

[0042] In some embodiments, as Figure 1 and Figure 2 As shown, the multiple heat sinks 6 may also include a fifth heat sink 65. The fifth heat sink 65 is disposed on the front panel 32 of the frequency converter control cabinet 3. The vertical projections of the fourth heat sink 64 and the fifth heat sink 65 on the back panel 35 are located on both sides of the air inlet 31. Based on the second circulating cooling airflow B formed by the fourth heat sink 64 and the air inlet 31, the fifth heat sink 65 added to the front panel 32 of the frequency converter control cabinet 3 can cooperate with the fourth heat sink 64 to increase the flow speed of the second circulating cooling airflow B, and further improve the heat dissipation efficiency of the frequency converter control cabinet 3. Specifically, when the heat sink 6 includes a fan 68, the fourth heat sink 64 and the fifth heat sink 65 can blow air into the frequency converter control cabinet 3 through the air inlet 31 to jointly form the second circulating cooling airflow B.

[0043] In some embodiments, as Figure 1 and Figure 2 As shown, the air inlet 31 is arranged adjacent to the second side panel 5. The front panel 32 includes two side-by-side switch doors 321. The fourth heat sink 64 and the fifth heat sink 65 are arranged on the switch door 321 adjacent to the second side panel 5 and are spaced diagonally along the switch door 321. It should be noted that, for the sake of convenient and reasonable wiring, many devices in the PLC control cabinet 2 are not limited to the back panel 35 of the PLC control cabinet 2. Sometimes, they also need to occupy part of the side panel adjacent to the frequency converter control cabinet 3, i.e., the second side panel 5 in this disclosure. Based on this, the arrangement in this embodiment allows the second circulating cooling airflow B formed by the fourth heat sink 64, the fifth heat sink 65, and the air inlet 31 to effectively dissipate heat from the frequency converter control cabinet 3 itself. Furthermore, the second circulating cooling airflow B is closer to the second side panel 5, which can dissipate heat from some of the devices in the PLC control cabinet 2 installed on the second side panel 5, thus improving the rationality of the heat sink arrangement.

[0044] In some embodiments, as Figure 1 and Figure 2 As shown, the multiple heat sinks 6 may also include a sixth heat sink 66. The sixth heat sink 66 is placed on the base plate 33 of the frequency converter control cabinet 3 and can form a third circulating cooling airflow C within the frequency converter control cabinet 3. The airflow direction of the second circulating cooling airflow B and the airflow direction of the third circulating cooling airflow C intersect each other. The third circulating cooling airflow C and the fourth circulating cooling airflow can form a surrounding three-dimensional circulating cooling airflow within the frequency converter control cabinet 3, further improving the heat dissipation efficiency within the frequency converter cabinet.

[0045] In some embodiments, as Figure 1 and Figure 2As shown, there are two sixth heat sinks 66 arranged side by side. These two sixth heat sinks 66 are adjacent to the second side plate 5. The two sixth heat sinks 66 arranged on the base plate 33 can improve heat dissipation efficiency by cooperating with the second circulating cooling airflow B, and also avoid the problem of low heat dissipation efficiency in the part of the frequency converter control cabinet 3 that is away from the second side plate 5 due to both the second circulating cooling airflow B and the third circulating cooling airflow C being close to the second side plate 5. The third circulating cooling airflow C can compensate for the heat dissipation efficiency of the frequency converter control cabinet 3, reliably ensuring its own heat dissipation efficiency.

[0046] In some embodiments, as Figure 1 and Figure 2 As shown, a filter screen 34 can also be installed at the air inlet 31. The filter screen 34 can prevent impurities from entering the frequency converter control cabinet 3 through the air inlet 31 during the heat dissipation process, thereby avoiding the impact of impurities on the normal operation of various devices inside the frequency converter control cabinet 3. The filter screen 34 improves the protection of the frequency converter control cabinet 3 itself during the heat dissipation process.

[0047] In some embodiments, as Figure 1 As shown, the control cabinet assembly 100 also includes a first airflow guiding structure 7. The first airflow guiding structure 7 includes a first airflow guiding plate 72 and a first connecting plate 71 connected to the first airflow guiding plate 72. The first airflow guiding plate 72 is connected to the third side plate 9 via the first connecting plate 71. The first airflow guiding structure 7 allows airflow to flow along a preset path into the grid-connected control cabinet 1 and the PLC control cabinet 2, avoiding airflow turbulence and improving airflow efficiency. Furthermore, the first airflow guiding plate 72 can reduce airflow resistance during flow, improving heat dissipation efficiency. The first airflow guiding plate 72 also protects the first heat sink 61 and the third side plate 9 of the grid-connected control cabinet 1, reducing the impact and corrosion of the equipment by airflow.

[0048] In some embodiments, the control cabinet assembly 100 further includes a second airflow guiding structure 8. The second airflow guiding structure 8 includes a second airflow guiding plate 82 and a second connecting plate 81 connected to the second airflow guiding plate 82. The second airflow guiding plate 82 is connected to the air inlet 31 via the second connecting plate 81. The second airflow guiding structure 8 allows airflow to flow into the frequency converter control cabinet 3 along a preset path, avoiding airflow turbulence and improving airflow efficiency. Additionally, the second airflow guiding plate 82 can reduce airflow resistance during flow, improving heat dissipation efficiency. The second airflow guiding plate 82 also protects the filter 34 at the air inlet 31 and the back plate 35 of the frequency converter control cabinet 3, reducing the impact and corrosion of the equipment by airflow.

[0049] In some embodiments, as Figure 3As shown, the heat sink 6 may include a water-cooled plate 67 and a fan 68 connected to one side of the water-cooled plate 67. Through the cooperation of the fan 68 and the water-cooled plate 67, heat dissipation efficiency can be further improved. Specifically, the fan 68 can blow cold air into the corresponding cabinet during operation, absorbing the heat emitted by the equipment inside the cabinet, thereby achieving the purpose of heat dissipation.

[0050] In some embodiments, as Figure 2 As shown, the water-cooled plate 67 is provided with a connecting lug 69 having a mounting hole 691. The mounting hole 691 is used for a connector to pass through to connect the heat sink 6 to the first side plate 4, or the second side plate 5, or the third side plate 9, or the front plate 32 of the frequency converter control cabinet 3, or the bottom plate 33 of the frequency converter control cabinet 3. For example, the fastener can be a bolt, screw, or other suitable component, which is not limited here. Those skilled in the art can design and adjust it according to the actual situation. The heat sink 6 is installed by the cooperation of the fastener and the connecting lug 69. This assembly method is relatively simple, convenient, and reliable. In addition, it also facilitates later replacement and maintenance.

[0051] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0053] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A control cabinet assembly for a wind turbine generator set, characterized in that, The control cabinet assembly includes a grid-connected control cabinet, a frequency converter control cabinet, and a PLC control cabinet arranged between the grid-connected control cabinet and the frequency converter control cabinet. The grid-connected control cabinet and the PLC control cabinet share a first side panel, and the frequency converter control cabinet and the PLC control cabinet share a second side panel. The control cabinet assembly further includes: Multiple heat sinks, including a first heat sink, a second heat sink, a third heat sink, and a fourth heat sink; The first heat sink is placed on the third side panel of the grid-connected control cabinet away from the PLC control cabinet; The second heat sink is placed on the first side plate, and the first heat sink and the second heat sink are at the same height; The third heat sink is placed on the first side plate and is located below the second heat sink; The first heat sink, the second heat sink, and the third heat sink are used to form a first circulating heat dissipation airflow between the grid-connected control cabinet and the PLC control cabinet, and an air outlet is provided on the third side plate. The fourth heat sink is located on the front panel of the frequency converter control cabinet, and an air inlet is provided on the back panel of the frequency converter control cabinet. The fourth heat sink and the air inlet are used to form a second circulating heat dissipation airflow in the frequency converter control cabinet.

2. The control cabinet assembly for a wind turbine generator set according to claim 1, characterized in that, The plurality of heat dissipation components also includes a fifth heat dissipation component, which is disposed on the front panel of the frequency converter control cabinet. The vertical projections of the fourth heat dissipation component and the fifth heat dissipation component on the back panel are respectively located on both sides of the air inlet.

3. The control cabinet assembly for a wind turbine generator set according to claim 2, characterized in that, The air inlet is arranged adjacent to the second side panel. The front panel includes two side-by-side switch doors. The fourth heat sink and the fifth heat sink are disposed on one of the switch doors adjacent to the second side panel and are arranged diagonally along the switch door.

4. The control cabinet assembly for a wind turbine generator set according to claim 1, characterized in that, The plurality of heat dissipation components also includes a sixth heat dissipation component, which is placed on the bottom plate of the frequency converter control cabinet and is able to form a third circulating heat dissipation airflow in the frequency converter control cabinet. The airflow direction of the second circulating heat dissipation airflow and the airflow direction of the third circulating heat dissipation airflow intersect each other.

5. The control cabinet assembly for a wind turbine generator set according to claim 4, characterized in that, The number of sixth heat sinks is two, arranged side by side, and the two sixth heat sinks are arranged adjacent to the second side plate.

6. The control cabinet assembly for a wind turbine generator set according to any one of claims 1-5, characterized in that, A filter screen is also installed at the air inlet.

7. The control cabinet assembly for a wind turbine generator set according to any one of claims 1-5, characterized in that, The control cabinet assembly further includes a first flow guiding structure, which includes a first flow guiding plate and a first connecting plate connected to the first flow guiding plate. The first flow guiding plate is connected to the third side plate through the first connecting plate.

8. The control cabinet assembly for a wind turbine generator set according to any one of claims 1-5, characterized in that, The control cabinet assembly also includes a second airflow guiding structure, which includes a second airflow guiding plate and a second connecting plate connected to the second airflow guiding plate. The second airflow guiding plate is connected to the air inlet via the second connecting plate.

9. The control cabinet assembly for a wind turbine generator set according to any one of claims 1-5, characterized in that, The heat dissipation component includes a water-cooled plate and a fan connected to one side of the water-cooled plate.

10. The control cabinet assembly for a wind turbine generator set according to claim 9, characterized in that, The water-cooled plate is provided with connecting lugs having mounting holes, which are used for connecting parts to pass through to connect the heat sink to the first side plate, or the second side plate, or the third side plate, or the front plate of the frequency converter control cabinet, or the bottom plate of the frequency converter control cabinet.

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