Heat dissipation device for wind generating set
By using partitions and refrigeration mechanisms to form internal circulation in the wind turbine set, the problems of uneven temperature distribution and dust entry are solved, uniform heat dissipation and dust prevention effects are achieved, and the working performance of the generator set is improved.
Patent Information
- Application Number
- CN202422057681.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The heat dissipation methods of existing wind turbines have problems such as uneven temperature distribution and the entry of external dust and impurities, which affect the normal operation of the generator set.
The partitions are used to separate the inner space of the chassis into a cooling channel and installation space, and the circulating fan and refrigeration mechanism form an internal circulation. The cooling airflow at the refrigeration end dissipates heat evenly to prevent external impurities from entering.
It realizes uniform heat dissipation of the generator set, avoids the entry of external dust, and improves the working stability and efficiency of the generator set.
Smart Images
Figure CN223062587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat dissipation devices, and particularly relates to a heat dissipation device for a wind power generation unit. Background Art
[0002] With the development of technology, how to rationally and effectively utilize energy has become an urgent problem to be solved in today's society. Among them, wind energy, as a clean energy, is mostly used for wind power generation, mainly applied to wind turbines. During operation, the fan blades of the generator are rotated by wind energy, and then the rotating shaft of the generator set is driven to rotate, so that the generator set works to generate electricity, that is, the wind energy is converted into electrical energy through the wind power generation unit for use and storage.
[0003] Among them, the generator set is generally encapsulated in a chassis. When the generator set is working daily, it will generate a lot of heat. If these heats are not dissipated from the chassis in time, it is very easy to damage the generator set and is not conducive to the normal use of the generator set.
[0004] The traditional heat dissipation method is air-cooled heat dissipation, which is realized by setting heat dissipation fins on the chassis and / or installing a heat dissipation fan on the chassis. The disadvantage of this heat dissipation method is that when the heat dissipation fan works, it will bring external dust and other impurities into the chassis together, thus affecting the operation of the generator set.
[0005] In addition, in related technologies, there are also some generator sets that use water-cooled (mainly using water-cooled coils for cooling) methods for heat dissipation. Although this method will not introduce external dust into the chassis, the area where it is installed in the chassis is fixed. In this way, the temperature closer to the water-cooled coil is lower, while the temperature far from the water-cooled coil is still relatively high, so it is easy to cause uneven temperature distribution in the chassis, which is also not conducive to the operation of the generator set. Content of the Utility Model
[0006] In order to solve at least one technical problem mentioned in the background art, the purpose of the utility model is to provide a heat dissipation device for a wind power generation unit.
[0007] To achieve the above purpose, the utility model provides the following technical solutions:
[0008] A heat dissipation device for a wind power generation unit, which is used to be installed on the chassis of the power generation unit. The heat dissipation device includes a partition member and a refrigeration mechanism. The internal space of the chassis is partitioned by the partition member to form a cooling channel and an installation space for installing the power generation unit. The cooling channel includes an air inlet side and an air outlet side. The air inlet side includes a circulation fan for introducing the air flow in the installation space into the cooling channel. The air flow in the cooling channel flows back into the installation space through the air outlet side. The refrigeration mechanism is hermetically installed on the chassis. The refrigeration mechanism includes a refrigeration end, and at least a part of the refrigeration end is in the cooling channel and is located between the air inlet side and the air outlet side.
[0009] Compared with the prior art, the advantages of adopting this solution are as follows:
[0010] In this solution, by arranging the refrigeration end of the refrigeration mechanism in the cooling channel and setting a circulation fan, in this way, the circulation fan can work to extract the air flow to circulate between the installation space and the cooling channel. When the air flow passes through the refrigeration end, it will be cooled by the refrigeration end to form cold air, and the cold air flows back into the installation space through the air outlet side, so as to cool and dissipate the heat of the power generation unit in the installation space.
[0011] This solution is equivalent to using cold air to dissipate the heat of the power generation unit. Compared with the traditional water-cooled heat dissipation, the cold air, that is, the air flow, can be dispersed in each area of the installation space, so that the power generation unit in the installation space can be evenly cooled and dissipated.
[0012] In addition, although this solution uses the air-cooled method for heat dissipation, the air flow circulates internally inside the chassis and does not introduce the air flow outside the chassis into the chassis. In this way, it can prevent foreign dust and other impurities from being brought into the chassis.
[0013] In summary, this solution can not only evenly dissipate the heat of the power generation unit, but also prevent foreign dust and other impurities from entering the chassis and affecting the operation of the power generation unit.
[0014] Optionally, the refrigeration mechanism is a water-cooled mechanism, including a heat exchange tube that can circulate a refrigerant, and at least a part of the heat exchange tube is in the cooling channel; and / or the refrigeration mechanism is an air-conditioning system, and the evaporator of the air-conditioning system is in the cooling channel.
[0015] Optionally, the heat exchange tube is in a serpentine tube structure.
[0016] Optionally, the refrigeration mechanism includes one or more thermoelectric coolers installed on the side wall of the chassis. The thermoelectric cooler includes a refrigerating surface and a heat dissipating surface. The refrigerating surface of the thermoelectric cooler faces the cooling channel, and the heat dissipating surface is outside the chassis.
[0017] Optionally, an installation opening for the thermoelectric cooler is provided on the side wall of the chassis; the refrigeration mechanism further includes a first heat conducting plate, which is installed on the chassis and covers the installation opening, and the heat dissipation surface of the thermoelectric cooler is attached to the first heat conducting plate; and / or the refrigeration mechanism further includes a second heat conducting plate; the second heat conducting plate is located in the cooling channel and is attached to the refrigerating surface of the thermoelectric cooler.
[0018] Optionally, a first heat dissipation fin group is provided on the side wall of the first heat conducting plate away from the thermoelectric cooler; and / or a second heat dissipation fin group is provided on the side wall of the second heat conducting plate away from the thermoelectric cooler.
[0019] Optionally, the refrigeration mechanism further includes a heat insulation plate, a through opening for the thermoelectric cooler to be embedded is provided on the heat insulation plate, the heat insulation plate is arranged between the first heat conducting plate and the second heat conducting plate, and the first heat conducting plate and the second heat conducting plate are detachably connected.
[0020] Optionally, the first heat conducting plate and the second heat conducting plate are connected by a bolt and nut assembly.
[0021] Optionally, the partition member includes a partition plate and a uniform air distribution plate, the partition plate and the uniform air distribution plate enclose the cooling channel and the installation space in the chassis, the circulation fan is installed on the partition plate, and the uniform air distribution plate is located on the side away from the rotating shaft of the generator set.
[0022] Optionally, a plurality of support blocks are provided in the chassis, and the generator set is lifted by a certain height through the support blocks.
[0023] Other advantages and effects of the present utility model are specifically explained in the specific implementation manner and the attached drawings section. Description of the Drawings
[0024] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;
[0025] Figure 2 It is a schematic structural diagram of Embodiment 3 of the present utility model;
[0026] Figure 3 It is an exploded view of the refrigeration mechanism in Embodiment 3 of the present utility model. Specific Embodiment
[0027] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.
[0028] In the following description, terms indicating orientation or positional relationships such as "inner", "outer", "upper", "lower", "left", "right", etc. are only for the convenience of describing embodiments and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0029] A wind turbine is mainly a generator that uses wind energy to generate electricity. It mainly includes a chassis, a generator set, and fan blades. The generator set is installed inside the chassis, and the fan blades are outside the chassis and fixed to the rotating shaft of the generator set. During operation, natural wind blows the fan blades to rotate, thereby driving the rotating shaft to rotate, and then driving the generator set to generate electricity.
[0030] The present utility model provides a heat dissipation device for a wind turbine generator set (hereinafter referred to as the heat dissipation device) to be installed on the chassis of the generator set in order to solve the technical problem of how to uniformly dissipate heat from the generator set without introducing external impurities into the chassis during heat dissipation and affecting the generator set.
[0031] The heat dissipation device includes a partition member and a refrigeration mechanism. The internal space of the chassis is partitioned by the partition member to form a cooling channel and an installation space for installing the generator set. The cooling channel includes an air inlet side and an air outlet side. The air inlet side includes a circulation fan for introducing the air flow in the installation space into the cooling channel, and the air flow in the cooling channel flows back into the installation space through the air outlet side. The refrigeration mechanism is hermetically installed on the chassis. The refrigeration mechanism includes a refrigeration end, and at least part of the refrigeration end is in the cooling channel and is located between the air inlet side and the air outlet side.
[0032] Embodiment 1
[0033] As shown in Figure 1, the partition member includes a partition plate 31 and a wind equalizing plate 32. The partition plate 31 and the wind equalizing plate 32 enclose the cooling channel 12 and the installation space 11 inside the chassis 1. For example:
[0034] The partition plate 31 is horizontally installed in the upper part inside the chassis 1, and the wind equalizing plate 32 is vertically fixed in the chassis 1 and fixed or abutted against one end of the partition plate 31 away from the rotating shaft 21. Thus, the partition plate 31 and the wind equalizing plate 32 as a whole form an L-shaped plate structure. In this way, the inner side of the partition plate 31 and the inner side of the wind equalizing plate 32 enclose the installation space 11 inside the chassis 1, and the outer side of the partition plate 31 and the outer side of the wind equalizing plate 32 enclose an L-shaped cooling channel 12 inside the chassis 1.
[0035] Among them, the installation space 11 mainly serves as the installation area for the generator set 2, and the cooling channel 12 is the air flow passage.
[0036] In some embodiments, the intake end of the cooling channel 12 is formed by the circulation fan 4. For example, the circulation fan 4 is installed on one side of the partition 31 close to the rotating shaft 21, with its air inlet end facing the installation space 11 and its air outlet end facing the cooling channel 12. Thus, under the action of the circulation fan 4, the air flow in the installation space 11 can be introduced into the cooling channel 12.
[0037] The air outlet side is formed by the air distribution plate 32. The air distribution plate 32 refers to a plate body with ventilation holes evenly distributed on its surface. During operation, the air flow in the cooling channel 12, under the action of the circulation fan 4, flows back into the installation space 11 through the ventilation holes on the air distribution plate 32, so as to achieve an internal air circulation between the installation space 11 and the cooling channel 12.
[0038] The reason for using the air distribution plate 32 as the air outlet side is that through the air distribution plate 32, the air flow output from the cooling channel 12 can be evenly introduced into the installation space 11.
[0039] The refrigeration mechanism is mainly used to cool the air flow passing through the cooling channel 12, and it has a refrigeration end, that is, the part that performs refrigeration during operation.
[0040] At least part of the refrigeration end is located in the cooling channel 12 and is between the intake side and the air outlet side. In short, at least part of the refrigeration end is on the air flow path in the cooling channel 12. Thus, when the air flow flows in the cooling channel 12, when the air flow passes through the refrigeration end, it will be cooled by the refrigeration end to form cold air. The cold air flows back into the installation space 11 through the air distribution plate 32 to air-cool the generator set 2 in the installation space 11, and then the circulation fan 4 re-introduces the air flow in the installation space 11 into the cooling channel 12 for cooling again. In this way, a reciprocating cycle is formed to establish an internal air circulation path in the chassis 1 to circulate and refrigerate the generator set 2.
[0041] In this embodiment, the generator set 2 is cooled by cold air. Compared with the traditional water-cooling cooling method, its advantage is that the cold air can be dispersed in each area of the installation space 11, so that the generator set 2 in the installation space 11 can be evenly cooled.
[0042] In addition, although this embodiment uses air-cooling for heat dissipation, the air flow circulates internally within the chassis 1 and does not introduce the air flow outside the chassis 1 into the chassis 1. Thus, it can prevent foreign dust and other impurities from being brought into the chassis 1.
[0043] In this way, it can not only evenly dissipate heat from the generator set 2, but also prevent foreign dust and other impurities from entering the chassis 1 and affecting the operation of the generator set 2.
[0044] In addition, in order to increase the heat dissipation range of the generator set 2, in some embodiments, a plurality of support blocks 6 are arranged at intervals in the chassis 1. The generator set 2 is fixedly installed on the support blocks 6, and the generator set 2 is lifted by a certain height through the support blocks 6. In this way, a channel for air flow is formed at the bottom of the generator set 2, so that cold air can cool the entire outer periphery of the generator set 2 by air cooling.
[0045] In some embodiments, the refrigeration mechanism is a water cooling mechanism, using coolant or cold water as the refrigerant. It includes a heat exchange tube 54. During operation, the refrigerant enters the heat exchange tube 54 from the liquid inlet end of the heat exchange tube 54 and returns from the liquid outlet end at the other end of the heat exchange tube 54. In this way, the cycle repeats, so that there is always a circulating refrigerant in the heat exchange tube 54. The refrigerant exchanges heat with the air outside the heat exchange tube 54 through the heat exchange tube 54 to achieve the purpose of cooling.
[0046] Specifically in this embodiment, at least a part of the heat exchange tube 54 is located in the cooling channel 12. In some embodiments, in order to increase the flow path of the refrigerant, the heat exchange tube 54 adopts a serpentine tube structure.
[0047] Embodiment 2
[0048] On the basis of Embodiment 1, this embodiment provides another heat dissipation device for the wind turbine generator set 2. The difference between this embodiment and Embodiment 1 lies in that their refrigeration mechanisms are different. In this embodiment, the refrigeration mechanism adopts an air conditioning system.
[0049] The air conditioning system has been widely applied and described in existing air conditioners. Therefore, no further elaboration will be made here. It mainly uses the evaporator as the refrigeration end for refrigeration. Specifically in this embodiment, the evaporator (not shown in the figure) of the air conditioning system is installed in the cooling channel 12.
[0050] Embodiment 3
[0051] Combined Figure 2 and Figure 3 As shown, on the basis of Embodiment 1, this embodiment provides another heat dissipation device for the wind turbine generator set 2. The difference between this embodiment and Embodiment 1 lies in that their refrigeration mechanisms are different. In this embodiment, the refrigeration mechanism uses a thermoelectric cooler 50 for refrigeration.
[0052] The thermoelectric cooler 50, as a common refrigeration component, has been widely applied and described in the prior art. It generally includes two working surfaces on opposite sides. During operation, one working surface is used for refrigeration as the refrigerating surface, and the other working surface is used for heat dissipation as the heat dissipating surface (generally also called the heating surface or the heat generating surface).
[0053] The thermoelectric cooler 50 can switch the two working surfaces according to the different directions of the current passing through.
[0054] In this embodiment, the refrigeration mechanism includes one or more thermoelectric coolers 50 mounted on the side wall of the chassis 1. For example, in this embodiment, a case of using 6 thermoelectric coolers 50 is shown.
[0055] Among them, the refrigerating surface of each thermoelectric cooler 50 faces the cooling channel 12, and the heat dissipation surface is located outside the chassis 1. In this way, when the air flow flows through the refrigerating surface in the cooling channel 12, it will be cooled to form cold air for subsequent air cooling of the generator set 2.
[0056] In order to enable the refrigerating surface of the thermoelectric cooler 50 to act on the cooling channel 12, in some embodiments, an installation opening for the thermoelectric cooler 50 to pass through is provided on the upper side wall of the chassis 1.
[0057] In order to improve the heat dissipation efficiency of the heat dissipation surface of the thermoelectric cooler 50, in some embodiments, the refrigeration mechanism further includes a first heat conducting plate 51. The first heat conducting plate 51 is installed on the top wall of the chassis 1 and covers the installation opening. In some embodiments, the first heat conducting plate 51 can be installed on the chassis 1 by means of bolts.
[0058] Among them, the heat dissipation surface of the thermoelectric cooler 50 is in contact with the first heat conducting plate 51. In this way, the heat generated by the heat dissipation surface can be transferred to the first heat conducting plate 51 and dissipated by the first heat conducting plate 51. In addition, the first heat conducting plate 51 can also block the installation opening to ensure the sealing of the inside of the chassis 1 and prevent external dust and impurities from entering the chassis 1 through the installation opening.
[0059] In addition, in order to improve the heat dissipation effect of the first heat conducting plate 51, a first heat dissipation fin group 511 is provided on the side wall of the first heat conducting plate 51 away from the thermoelectric cooler 50; among them, the first heat dissipation fin group 511 and the first heat conducting plate 51 are of an integral structure. For example, the first heat conducting plate 51 can be made of copper, aluminum or other heat-conducting plates.
[0060] Similarly, in order to increase the heat exchange area between the refrigerating surface of the thermoelectric cooler 50 and the air flow in the cooling channel 12, in this embodiment, the refrigeration mechanism further includes a second heat conducting plate 52. The second heat conducting plate 52 is located in the cooling channel 12 and is in contact with the refrigerating surface of the thermoelectric cooler 50.
[0061] In this way, the refrigerating surface exchanges heat with the air flow in the cooling channel 12 through the second heat conducting plate 52 to achieve air flow cooling.
[0062] In order to improve the heat exchange efficiency between the second heat conducting plate 52 and the airflow in the cooling channel 12, in this embodiment, a second heat dissipation fin group 521 is provided on the side wall of the second heat conducting plate 52 away from the side of the semiconductor refrigeration chip 50, wherein the second heat dissipation fin group 521 and the second heat conducting plate 52 are of an integral structure.
[0063] In some embodiments, the first heat conducting plate 51 and / or the second heat conducting plate 52 can be made of copper, aluminum or other heat-conducting plates.
[0064] In order to install the semiconductor refrigeration chip 50 and prevent excessive heat exchange between the first heat conducting plate 51 and the second heat conducting plate 52, in this embodiment, as Figure 3 shown, the refrigeration mechanism further includes a heat insulation plate 53, and the heat insulation plate 53 refers to a plate with heat insulation performance. For example, rock wool board, foam board and other plates can be used.
[0065] As Figure 3 shown, a through hole 531 for embedding the semiconductor refrigeration chip 50 is formed on the heat insulation plate 53. The size and shape of the through hole 531 are adapted to those of the semiconductor refrigeration chip 50, and the number of the through holes 531 is the same as that of the semiconductor refrigeration chips 50 and they correspond one by one.
[0066] The heat insulation plate 53 is arranged between the first heat conducting plate 51 and the second heat conducting plate 52, and the first heat conducting plate 51 and the second heat conducting plate 52 are detachably connected. For example, the first heat conducting plate 51 and the second heat conducting plate 52 are connected by a bolt and nut assembly.
[0067] At this time, the first heat conducting plate 51 and the second heat conducting plate 52 are locked by bolts and nuts, so that the heat insulation plate 53 is clamped between the first heat conducting plate 51 and the second heat conducting plate 52. At the same time, the semiconductor refrigeration chip 50 is also clamped between the first heat conducting plate 51 and the second heat conducting plate 52, realizing the installation of the semiconductor refrigeration chip 50.
[0068] It should be noted that in this embodiment, the size of the installation opening is sufficient for the second heat conducting plate 52 and the heat insulation plate 53 to pass through vertically.
[0069] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.
Claims
1. A heat dissipation device for a wind turbine generator set, which is used to be installed on the chassis of the generator set, and is characterized in that, The heat dissipation device includes a partition member and a refrigeration mechanism. The internal space of the chassis is partitioned by the partition member to form a cooling channel and an installation space for installing a generator set. The cooling channel includes an air inlet side and an air outlet side. The air inlet side includes a circulation fan for introducing the air flow in the installation space into the cooling channel. The air flow in the cooling channel flows back into the installation space through the air outlet side. The refrigeration mechanism is hermetically installed on the chassis. The refrigeration mechanism includes a refrigeration end, and at least part of the refrigeration end is located in the cooling channel and between the air inlet side and the air outlet side.
2. The heat dissipation device for a wind turbine generator set according to claim 1, wherein The refrigeration mechanism is a water-cooling mechanism, including a heat exchange tube capable of circulating a refrigerant, and at least part of the heat exchange tube is located in the cooling channel; and / or the refrigeration mechanism is an air-conditioning system, and the evaporator of the air-conditioning system is located in the cooling channel.
3. The heat dissipation device for a wind turbine according to claim 2, characterized in that, The heat exchange tube is in a serpentine tube structure.
4. A heat dissipation device for a wind power generation unit according to claim 1, characterized in that, The refrigeration mechanism includes one or more thermoelectric coolers installed on the side wall of the chassis. The thermoelectric cooler includes a refrigerating surface and a heat dissipating surface. The refrigerating surface of the thermoelectric cooler faces the cooling channel, and the heat dissipating surface is located outside the chassis.
5. A heat dissipation device for a wind power generation unit according to claim 4, characterized in that, An installation opening for the thermoelectric cooler to pass through is formed on the side wall of the chassis; the refrigeration mechanism further includes a first heat conducting plate, the first heat conducting plate is installed on the chassis and covers the installation opening, and the heat dissipating surface of the thermoelectric cooler is attached to the first heat conducting plate; and / or the refrigeration mechanism further includes a second heat conducting plate; the second heat conducting plate is located in the cooling channel and is attached to the refrigerating surface of the thermoelectric cooler.
6. The heat dissipation device for a wind turbine generator according to claim 5, wherein, A first heat dissipation fin group is provided on the side wall of the first heat conducting plate away from the thermoelectric cooler; and / or a second heat dissipation fin group is provided on the side wall of the second heat conducting plate away from the thermoelectric cooler.
7. The heat dissipation device for a wind turbine according to claim 5, characterized in that, The refrigeration mechanism further includes a heat insulation plate. A through opening for the thermoelectric cooler to be embedded is formed on the heat insulation plate. The heat insulation plate is arranged between the first heat conducting plate and the second heat conducting plate, and the first heat conducting plate and the second heat conducting plate are detachably connected.
8. The heat dissipation device for a wind turbine according to claim 7, characterized in that, The first heat conducting plate and the second heat conducting plate are connected by a bolt and nut assembly.
9. The heat dissipation device for a wind turbine according to claim 1, characterized in that, The partition member includes a partition board and an air distribution board. The partition board and the air distribution board enclose the cooling channel and the installation space in the chassis. The circulation fan is installed on the partition board, and the air distribution board is located on one side away from the rotating shaft of the generator set.
10. A heat dissipation device for a wind turbine according to claim 1, characterized in that, A plurality of support blocks are provided in the chassis, and the generator set is lifted by a certain height through the support blocks.