Thermal management device, generator and wind turbine generator system

Abstract

The application relates to the technical field of wind power equipment, in particular to a heat management device, a generator and a wind turbine generator set. The heat management device comprises a ring-shaped shell, the ring-shaped shell comprises an inner shell and an outer shell which are distributed along the radial direction of the ring-shaped shell, and a closed containing cavity is formed between the inner shell and the outer shell; a partition plate assembly is arranged in the containing cavity, the partition plate assembly comprises a plurality of first partition plates, each first partition plate extends along the circumferential direction of the ring-shaped shell, and the first partition plates are arranged at intervals along the axial direction of the ring-shaped shell, so that the containing cavity is divided into a plurality of heat exchange channels which extend along the circumferential direction, each heat exchange channel is provided with a first inlet and a first outlet; and a pipeline assembly is connected to the ring-shaped shell and communicates with the containing cavity, the pipeline assembly comprises a first pipeline and a second pipeline, the first pipeline communicates with the first inlet, and the second pipeline communicates with the first outlet. The heat management device provided by the application can reduce the flow resistance and improve the heat dissipation effect.

Description

Technical Field

[0001] This application relates to the field of wind power equipment technology, and in particular to a thermal management device, a generator, and a wind turbine generator set. Background Technology

[0002] Wind turbine generators mainly consist of components such as generators, towers, blades, and nacelles. Among these, the generator, as the core of energy conversion, generates a large amount of heat during operation due to electromagnetic induction and mechanical friction. If this heat cannot be dissipated in time, the generator temperature will rise, which will not only increase the risk of generator failure but also affect power generation efficiency and the overall operational stability of the unit.

[0003] In related technologies, a surround-type thermal management device is usually installed on the outside of the core heat-generating components of the generator, and heat is dissipated by introducing coolant into the flow channels inside the thermal management device.

[0004] However, the aforementioned thermal management devices suffer from high flow resistance and poor heat dissipation. Therefore, a new thermal management device is urgently needed. Utility Model Content

[0005] This application provides a thermal management device, a generator, and a wind turbine generator set. The thermal management device can reduce flow resistance and improve heat dissipation.

[0006] To achieve the above objectives, the technical solution of this application is as follows: In a first aspect, this application provides a thermal management device, comprising: an annular shell, the annular shell including an inner shell and an outer shell distributed radially therefrom, with a closed receiving cavity formed between the inner shell and the outer shell; a partition assembly disposed in the receiving cavity, the partition assembly including a plurality of first partitions, each first partition extending circumferentially along the annular shell, the first partitions being spaced apart axially along the annular shell to divide the receiving cavity into a plurality of circumferentially extending heat exchange channels, each heat exchange channel having a first inlet and a first outlet; and a pipeline assembly connected to the annular shell and communicating with the receiving cavity, the pipeline assembly including a first pipeline and a second pipeline, the first pipeline communicating with the first inlet and the second pipeline communicating with the first outlet.

[0007] In one possible implementation, the thermal management device provided in this application has the same flow rate along the axial direction in each heat exchange channel.

[0008] In one possible implementation, the thermal management device provided in this application has each first partition as an arc-shaped plate extending at a predetermined angle in the circumferential direction, and multiple first partitions are uniformly arranged in the axial direction, with equal spacing between each pair of adjacent first partitions.

[0009] In one possible implementation, the thermal management device provided in this application has an axially extending connecting channel provided in the housing cavity, and a first pipeline is connected to at least two first inlets through a connecting channel; and / or, a second pipeline is connected to at least two first outlets through a connecting channel.

[0010] In one possible implementation, the thermal management device provided in this application has a first pipeline and a second pipeline that are axially spaced apart and staggered.

[0011] In one possible implementation, the thermal management device provided in this application has an annular housing with a first end and a second end opposite to each other in the axial direction. A first pipe is disposed closer to the first end relative to the second pipe. In the axial direction, the distance between the first pipe and the first end is d1, the distance between the first pipe and the second pipe is d2, and the distance between the second pipe and the second end is d3, where d1=d2=d3.

[0012] In one possible implementation, the thermal management device provided in this application has a circumferential perimeter of L1 in the outer casing, a minimum distance of L2 between the first pipe and the first partition, wherein 0.01×L1≤L2≤0.1×L1; and a minimum distance of L3 between the second pipe and the first partition, wherein 0.01×L1≤L3≤0.1×L1.

[0013] In one possible implementation, the thermal management device provided in this application has a first pipeline and a second pipeline that can divide the annular shell into a first sub-shell and a second sub-shell in the circumferential direction of the annular shell, wherein the extension angle of the first sub-shell in the circumferential direction is equal to the extension angle of the second sub-shell in the circumferential direction.

[0014] In one possible implementation, the thermal management device provided in this application has a first pipe and a second pipe arranged adjacent to each other in the circumferential direction of an annular housing, and in the circumferential direction, a second partition extending axially between the first pipe and the second pipe is provided.

[0015] In one possible implementation, the thermal management device provided in this application further includes a first support member in the piping assembly. The first support member is connected to the annular housing and is fixedly connected to the first pipe and the second pipe, respectively, to support the first pipe and the second pipe.

[0016] In one possible implementation, the thermal management device provided in this application further includes a drain assembly connected to the outer casing. A drain channel extending axially is provided inside the housing cavity. The drain channel is located at the lowest point of the housing cavity in the direction of gravity. Each heat exchange channel is interconnected in the area where the drain channel is located. One end of the drain assembly connected to the outer casing is located in the area where the drain channel is located. The drain assembly is able to discharge the dirt collected in the drain channel.

[0017] In one possible implementation, the thermal management device provided in this application includes a drain pipe and a second support component. The drain pipe is equipped with a valve body that can control the opening and closing of the drain pipe. The second support component is connected to the outer casing and fixedly connected to the drain pipe to support the drain pipe.

[0018] In one possible implementation, the thermal management device provided in this application has a first partition extending in the circumferential direction along at least one of a straight line trajectory, a broken line trajectory, or a curved trajectory; and / or, the first partition is provided with a third partition extending in the axial direction for a predetermined length.

[0019] In one possible implementation, the thermal management device provided in this application further includes an exhaust valve, which is disposed in one of the housing and the piping assembly, and the exhaust valve is disposed near the highest point relative to the lowest point of the housing or the piping assembly in the direction of gravity.

[0020] Secondly, this application provides a generator, including: a generator body, including a rotor and a stator coaxially arranged and rotatably coupled; and the aforementioned thermal management device, wherein the thermal management device is disposed on the stator.

[0021] Thirdly, this application provides a wind turbine generator set, including the aforementioned thermal management device or the aforementioned generator.

[0022] The thermal management device, generator, and wind turbine generator set provided in this application include an annular shell, a baffle assembly, and a piping assembly. The annular shell comprises an inner shell and an outer shell distributed radially, which together enclose a closed cavity to provide space for the flow of heat exchange medium and heat exchange. The baffle assembly is disposed within the cavity and includes multiple first baffles extending circumferentially along the annular shell and spaced axially along the annular shell to divide the cavity into multiple heat exchange channels. The first and second pipes of the piping assembly are respectively connected to the first inlet and first outlet of the heat exchange channels to supply heat exchange medium to the channels and discharge the heat exchange medium after heat exchange. By providing multiple circumferentially extending and axially spaced heat exchange channels, the heat exchange medium can achieve stable flow within multiple parallel heat exchange channels, reducing the flow rate and velocity of the heat exchange medium in a single heat exchange channel, shortening the length of a single heat exchange channel, and thus reducing the flow resistance of the heat exchange medium. At the same time, by shortening the length of a single heat exchange channel, the temperature rise of the heat exchange medium within the heat exchange channel can be reduced, thereby improving the heat exchange effect. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the thermal management device provided in the embodiments of this application; Figure 2 A partial structural diagram of the thermal management device provided in the embodiments of this application. Figure 1 ; Figure 3 for Figure 2 Another perspective illustration; Figure 4 This is a schematic diagram of the velocity streamlines inside the thermal management device provided in the embodiments of this application; Figure 5 for Figure 2 Another perspective illustration; Figure 6 A side view of a thermal management device provided in an embodiment of this application; Figure 7 A side view of a thermal management device provided in another embodiment of this application; Figure 8 A partial structural diagram of the thermal management device provided in the embodiments of this application. Figure 2 ; Figure 9 for Figure 8 Another perspective illustration; Figure 10 for Figure 9 A magnified view of a section at point A in the middle; Figure 11 This is a schematic diagram of the structure of the first partition provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures: 100 - Annular shell; 100a - First sub-shell; 100b - Second sub-shell; 110 - Inner shell; 120 - Outer shell; 130 - First end; 140 - Second end; 210 - First partition; 220 - Heat exchange passage; 221 - First inlet; 222 - First outlet; 230 - Second partition; 240 - Third partition; 300 - Piping assembly; 310 - First piping; 320 - Second piping; 330 - First support component; 410 - Connection channel; 420 - Sewage discharge channel; 500 - Sewage discharge assembly; 510 - Sewage discharge pipe; 511 - Valve body; 520 - Second support component; 600 - Exhaust valve; X - radial; Y - circumferential; Z - axial.

[0026] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the preferred embodiments of this application will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0029] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] The generator and wind turbine generator set provided in this application embodiment can ensure long-term reliable operation of the generator and wind turbine generator set by adopting the thermal management device provided in this application embodiment.

[0032] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] See Figures 1 to 3 This application provides a thermal management device, including an annular housing 100, a partition assembly, and a piping assembly 300. The annular housing 100 includes an inner housing 110 and an outer housing 120 distributed radially X, with a closed receiving cavity formed between the inner housing 110 and the outer housing 120. The partition assembly is disposed in the receiving cavity and includes a plurality of first partitions 210, each extending circumferentially Y along the annular housing 100, and the first partitions 210 are spaced apart axially Z along the annular housing 100 to divide the receiving cavity into a plurality of heat exchange channels 220 extending circumferentially Y, each heat exchange channel 220 having a first inlet 221 and a first outlet 222. The piping assembly 300 is connected to the annular housing 100 and communicates with the receiving cavity. The piping assembly 300 includes a first pipe 310 and a second pipe 320. The first pipe 310 is connected to the first inlet 221, and the second pipe 320 is connected to the first outlet 222.

[0034] The thermal management device provided in this application embodiment can cool and dissipate heat from the heat exchange equipment. In some embodiments, the thermal management device provided in this application embodiment can be used to maintain and raise the temperature of the heat exchange equipment. The following description uses the example of the thermal management device cooling and dissipating heat from the heat exchange equipment.

[0035] Optionally, the annular shell 100 may include an inner shell 110 and an outer shell 120. The diameter of the inner shell 110 is smaller than that of the outer shell 120. The inner shell 110 and the outer shell 120 are coaxially arranged and both are annular. In specific implementation, the axial direction Z of the inner shell 110 and the outer shell 120 is aligned with the axis of the heat exchange equipment (such as a generator) to facilitate circumferential heat exchange. The outer peripheral wall of the inner shell 110 and the inner peripheral wall of the outer shell 120 cooperate with each other to form a closed receiving cavity. The receiving cavity is an annular chamber with a preset length along the axial direction Z of the annular shell 100 and a preset spacing along the radial direction X. This not only provides a stable flow space for the heat exchange medium and avoids leakage of the heat exchange medium, but also, through the characteristics of the annular chamber, allows the heat exchange medium to fully contact the circumferential Y-surface of the equipment to be cooled during the flow process.

[0036] Optionally, the annular shell 100 can be made of a metal material with good thermal conductivity, which can not only ensure structural strength, but also help heat transfer between the annular shell 100 and the heat exchange medium to improve the heat exchange effect.

[0037] It should be noted that the annular housing 100 of the thermal management device provided in this application embodiment can be an independent structural component; when applied to a generator, the inner housing 110 and the outer housing 120 can also be the inner cylinder and outer cylinder of the generator base, respectively.

[0038] In a specific implementation, the partition assembly can be disposed within the receiving cavity. The partition assembly may include multiple first partitions 210, for example, three, four, five, etc. Each first partition 210 extends circumferentially Y along the annular shell 100, and the first partitions 210 are arranged at intervals along the axial direction Z of the annular shell 100, so that a heat exchange channel 220 is formed between every two adjacent first partitions 210, thereby dividing the receiving cavity into multiple heat exchange channels 220. Thus, by setting multiple first partitions 210, each heat exchange channel 220 has relative independence. The heat exchange channel 220 may be provided with a first inlet 221 and a first outlet 222. The positions of the first inlet 221 and the first outlet 222 can be set according to the structure of the annular shell 100 and the connection requirements of the pipeline assembly 300, as long as the heat exchange medium can smoothly enter and flow out of the heat exchange channel 220.

[0039] It is understood that the piping assembly 300 can be connected to the annular housing 100 and communicate with the receiving cavity. The piping assembly 300 may include a first pipe 310 and a second pipe 320. The first pipe 310 communicates with the first inlet 221, and the second pipe 320 communicates with the first outlet 222. In specific implementation, the first pipe 310 can be configured as one or more, and the second pipe 320 can also be configured as one or more. That is, the first pipe 310 and the second pipe 320 can form a one-to-many correspondence with multiple heat exchange channels 220, or the first pipe 310 and the second pipe 320 can be configured to correspond one-to-one with each heat exchange channel 220. The other end of the first pipe 310 can be connected to an external heat exchange medium supply system (such as a storage tank, a transfer pump, etc.) to provide sufficient heat exchange medium for the heat exchange channel 220. Meanwhile, to facilitate the adjustment of the heat exchange medium supply, a control component (such as a flow regulating valve) can be installed on the first pipeline 310. This control component allows for flexible adjustment of the heat exchange medium flow rate entering the heat exchange channel 220 based on the heat generation status of the equipment to be heat-exchanged, thereby achieving dynamic control of the heat exchange efficiency. The second pipeline 320 is used to collect the heat exchange medium after heat exchange within each heat exchange channel 220. The end of the second pipeline 320 furthest from the annular shell 100 can be connected to an external media processing system (such as a cooling device or a recovery device) to guide the heat-absorbing heat exchange medium outside the annular shell 100 for cooling or recovery.

[0040] In actual operation, the heat exchange medium can be supplied by an external system through the first pipeline 310 to the first inlet 221 of each heat exchange channel 220, and then enter the corresponding heat exchange channel 220 to flow along the circumferential Y direction. Since the multiple heat exchange channels 220 are connected in parallel and uniformly arranged along the axial Z direction, the heat exchange medium can achieve stable and uniform flow within the multiple parallel heat exchange channels 220. Compared with the traditional single long flow channel structure, the parallel arrangement of multiple heat exchange channels 220 in this embodiment can distribute the total heat exchange medium flow rate to each heat exchange channel 220, thereby reducing the heat exchange medium flow rate and velocity in a single heat exchange channel 220. At the same time, the design of the first baffles 210 being spaced apart along the axial Z direction shortens the extension length of a single heat exchange channel 220 along the circumferential Y direction compared with the traditional single long flow channel structure. The shortening of the heat exchange channel 220 length and the reduction of the heat exchange medium flow velocity can jointly reduce the flow resistance encountered by the heat exchange medium during the flow process, reduce the energy loss during the heat exchange medium transportation process, and reduce the power requirements of equipment such as the delivery pump. Furthermore, due to the shortened length of a single heat exchange channel 220, the residence time of the heat exchange medium within the heat exchange channel 220 is correspondingly reduced, which can effectively reduce the temperature rise of the heat exchange medium within the heat exchange channel 220 and improve the problem of subsequent heat exchange capacity reduction caused by excessive temperature rise of the heat exchange medium. This ensures that each heat exchange channel 220 can maintain a high heat exchange efficiency, thereby effectively improving the heat exchange effect of the thermal management device and providing a reliable guarantee for the stable operation of generators and wind turbine generator sets.

[0041] See Figure 2 and Figure 3 In some embodiments, the flow rate of each heat exchange channel 220 along the axial direction Z is the same.

[0042] In practice, multiple first baffles 210 can be arranged at equal intervals along the axial Z of the annular shell 100. This ensures that the area of ​​the flow cross-section corresponding to the axial Z length of each heat exchange channel 220 is the same, resulting in the same flow rate along the axial Z of each heat exchange channel 220. This reduces the difference in flow resistance within each heat exchange channel 220 and improves the uniformity of the heat exchange medium flow within each heat exchange channel 220. This arrangement can balance the heat exchange load of each heat exchange channel 220, ensuring the stability of the overall heat exchange effect of the thermal management device.

[0043] See Figure 2 and Figure 3 In some embodiments, each first partition 210 is an arc-shaped plate extending at a predetermined angle along the circumferential direction Y, and a plurality of first partitions 210 are uniformly arranged in the axial direction Z, with equal spacing between each pair of adjacent first partitions 210.

[0044] The curvature of the first partition 210 can match the curvature of the outer peripheral wall of the inner shell 110 and the inner peripheral wall of the outer shell 120 of the annular shell 100, allowing the first partition 210 to fit snugly against the inner shell 110 and the outer shell 120. This design ensures the sealing performance between the first partition 210 and the annular shell 100, and ensures the relative independence between adjacent heat exchange channels 220, thereby guaranteeing the stability of the flow state of the heat exchange medium within each heat exchange channel 220.

[0045] Each of the first baffles 210 is arranged at the same spacing along the axial Z direction, which helps to improve the uniformity of the heat exchange medium distribution in each heat exchange channel, reduce the flow deviation caused by the difference in the size of the heat exchange channel, improve the heat exchange balance at different positions in the annular shell 100, and thus optimize the heat exchange effect.

[0046] See Figure 3 In some embodiments, a connecting channel 410 extending along the Z-axis is provided in the receiving cavity, and the first pipeline 310 is connected to at least two first inlets 221 through a connecting channel 410.

[0047] It is understood that the first partition 210 extends at a predetermined angle in the circumferential Y direction, such as 180° or 270°, meaning that the first partition 210 can be configured as a non-closed annular plate. Therefore, at least two heat exchange channels 220 can have a connection point in the axial Z direction, i.e., a connecting channel 410 is formed in the axial Z direction. The connecting channel 410 can also be connected to the first pipeline 310, allowing the heat exchange medium transported by the first pipeline 310 to first enter the connecting channel 410, and then be distributed to the corresponding first inlet 221 through the connecting channel 410.

[0048] In specific implementation, the heat exchange channels 220 can be three, four, five, etc. Optionally, on the side where each first inlet 221 is located, the connecting channel 410 can be set as one or more. For example, along the axial direction Z, the connecting channel 410 can be set as two isolated from each other, and each connecting channel 410 can be set to connect two heat exchange channels 220. Thus, two first pipes 310 can be set, with each first pipe 310 corresponding to a connecting channel 410; or, multiple heat exchange channels 220 can be connected through a single connecting channel 410, thus requiring only one first pipe 310. By setting the connecting channel 410, multiple heat exchange channels 220 can be centrally connected to the first pipe 310, thereby reducing the number of first pipes 310 and simplifying the overall layout of the pipe assembly 300.

[0049] In some alternative embodiments, the second conduit 320 is connected to at least two first outlets 222 via a connection channel 410.

[0050] It should be noted that at least two first outlets 222 can also be connected through connecting channel 410. Thus, one end of connecting channel 410 can be connected to the second pipeline 320, and the other end can be connected to the first outlet 222 of at least two heat exchange channels 220 at the same time. This allows the heat exchange medium that has undergone heat exchange in each heat exchange channel 220 to flow from its respective first outlet 222 into connecting channel 410, and then be collected and discharged into the second pipeline 320 through connecting channel 410.

[0051] Optionally, on the side where the first outlet 222 is located, at least two heat exchange channels 220 can be connected by a connecting channel 410, i.e., along the axial direction Z, the connecting channels 410 can be configured as two isolated channels, and each connecting channel 410 can be configured to connect at least two heat exchange channels 220. Thus, two second pipes 320 can be configured, with each second pipe 320 corresponding to a connecting channel 410. Alternatively, multiple heat exchange channels 220 can be connected through a single connecting channel 410, thus requiring only one second pipe 320. Therefore, the connecting channel 410 achieves centralized connection between multiple heat exchange channels 220 and the second pipe 320, reducing the number of second pipes 320 and simplifying the overall layout of the piping assembly 300.

[0052] See Figure 3 In some embodiments, the first conduit 310 and the second conduit 320 are spaced apart and staggered in the axial Z direction.

[0053] The fact that the first pipe 310 and the second pipe 320 are spaced apart in the axial direction Z of the annular housing 100 can be understood as having a predetermined distance between them in the axial direction Z. The staggered arrangement can be understood as the first pipe 310 and the second pipe 320 being located at different positions in the circumferential direction Y of the annular housing 100.

[0054] This configuration optimizes the distribution and collection of the heat exchange medium within each heat exchange channel 220, ensuring that each heat exchange channel 220 can fully participate in heat exchange, thereby improving heat dissipation efficiency. In other words, if the first pipe 310 and the second pipe 320 are too close in the axial Z direction, or if they are aligned in the circumferential Y direction, the heat exchange medium entering a single heat exchange channel 220 from the first pipe 310 and exiting through the second pipe 320 will be difficult to distribute to other heat exchange channels 220. This can result in some heat exchange channels 220 forming localized heat exchange blind zones due to insufficient flow of the heat exchange medium, reducing overall heat exchange efficiency.

[0055] See Figure 3In some embodiments, the annular housing 100 has a first end 130 and a second end 140 opposite each other in the axial direction Z. The first conduit 310 is disposed close to the first end 130 relative to the second conduit 320. In the axial direction Z, the distance between the first conduit 310 and the first end 130 is d1, the distance between the first conduit 310 and the second conduit 320 is d2, and the distance between the second conduit 320 and the second end 140 is d3, where d1=d2=d3.

[0056] When the first pipeline 310 and the second pipeline 320 are each configured as one, the heat exchange medium transported by the first pipeline 310 can be evenly distributed along the axial direction Z of the annular shell 100 to each heat exchange channel 220 through the above configuration. This avoids the heat exchange medium from flowing to some heat exchange channels 220 in a concentrated manner, resulting in excessive flow and insufficient flow in some heat exchange channels 220. At the same time, the second pipeline 320 can evenly collect the heat exchange medium that has completed heat exchange from each heat exchange channel 220. This improves the uniformity of the flow of heat exchange medium in each heat exchange channel 220, and further improves the overall heat exchange uniformity and efficiency of the thermal management device.

[0057] in, Figure 4 This is a schematic diagram of the velocity streamline, used to illustrate the velocity distribution and flow trajectory of the heat exchange medium within the annular shell 100.

[0058] For example, see Figure 4 When six heat exchange channels 220 are set, the first pipe 310 can be correspondingly set with the first partition 210 between the second and third heat exchange channels 220 in the circumferential Y direction, and the second pipe 320 can be correspondingly set with the first partition 210 between the fourth and fifth heat exchange channels 220 in the circumferential Y direction. In this way, the low-temperature heat exchange medium transported by the first pipe 310 can be evenly distributed to each heat exchange channel 220, avoiding the heat exchange medium from flowing in a single direction, which would cause some heat exchange channels 220 to have excessive flow and some heat exchange channels 220 to have insufficient flow. At the same time, the second pipe 320 can evenly collect the high-temperature heat exchange medium, so that the inflow and outflow of the heat exchange medium in each heat exchange channel 220 are kept in a balanced state, optimizing the distribution and collection effect of the heat exchange medium in each heat exchange channel 220, ensuring that each heat exchange channel 220 can fully participate in heat exchange, thereby improving heat dissipation efficiency.

[0059] In some embodiments, along the circumferential direction Y, the perimeter of the outer shell 120 is L1, the minimum distance between the first pipe 310 and the first partition 210 is L2, wherein 0.01×L1≤L2≤0.1×L1; the minimum distance between the second pipe 320 and the first partition 210 is L3, wherein 0.01×L1≤L3≤0.1×L1.

[0060] Wherein, along the circumferential Y direction, the minimum distance between the first pipe 310 and the first partition 210 can be understood as the minimum distance between the center of the port of the first pipe 310 that connects to the receiving cavity and the end of the first partition 210, and the minimum distance between the second pipe 320 and the first partition 210 can be understood as the minimum distance between the center of the port of the second pipe 320 that connects to the receiving cavity and the end of the first partition 210.

[0061] For example, L2 = 0.02 × L1, L2 = 0.03 × L1, L2 = 0.05 × L1, L2 = 0.07 × L1, etc.; L3 = 0.02 × L1, L3 = 0.04 × L1, L3 = 0.05 × L1, L3 = 0.06 × L1, etc.

[0062] Understandably, if the minimum spacing is too large, an excessively wide connecting channel 410 will be formed between the first pipe 310 and the first baffle 210, making it difficult for the heat exchange medium to diffuse quickly and evenly after flowing out, easily leading to flow imbalance in each heat exchange channel 220. If the minimum spacing is too small, the connecting channel 410 will be too narrow, hindering the flow of the heat exchange medium, thus affecting the uniformity of heat exchange medium dispersion and increasing flow resistance. Furthermore, if the minimum spacing is too large, an excessively wide connecting channel 410 will be formed between the second pipe 320 and the first baffle 210, making it difficult for the heat exchange medium to collect quickly and orderly after heat exchange; if the minimum spacing is too small, the connecting channel 410 will be too narrow, hindering the discharge of the heat exchange medium after heat exchange, causing the heat exchange medium to accumulate in the channel.

[0063] In specific implementation, the minimum distance L2 between the first pipeline 310 and the first partition 210 can be equal to or unequal to the minimum distance L3 between the second pipeline 320 and the first partition 210. This application embodiment does not impose any restrictions on this.

[0064] See Figure 6 In some embodiments, the first conduit 310 and the second conduit 320 can divide the annular housing 100 into a first sub-housing 100a and a second sub-housing 100b in the circumferential Y direction, wherein the extension angle of the first sub-housing 100a in the circumferential Y direction is equal to the extension angle of the second sub-housing 100b in the circumferential Y direction.

[0065] In other words, the extension angle of the first sub-shell 100a in the circumferential Y direction and the extension angle of the second sub-shell 100b in the circumferential Y direction can both be 180°. Furthermore, the distance between the first pipe 310 and the first end 130 is d1, the distance between the first pipe 310 and the second pipe 320 is d2, and the distance between the second pipe 320 and the second end 140 is d3. In practice, d1, d2, and d3 can be set to be equal to each other.

[0066] In practice, after the heat exchange medium enters the receiving cavity through the first pipe 310, it is distributed within the heat exchange channels 220 corresponding to the first sub-shell 100a and the second sub-shell 100b in the connecting channel 410, flowing circumferentially to both sides along a semi-circular path. Since the first sub-shell 100a and the second sub-shell 100b have the same circumferential Y-angle, the flow resistance and path length of the heat exchange medium within the heat exchange channels 220 on both sides remain balanced. After heat exchange, the heat exchange medium, having completed its exchange, can collect in the connecting channel 410 and be discharged through the second pipe 320. This ensures that each heat exchange channel 220 has a uniform flow rate of heat exchange medium, guaranteeing that all regions of the annular shell 100 in the circumferential Y direction fully participate in heat exchange, thereby improving the overall heat exchange uniformity and efficiency of the thermal management device. Furthermore, by having the first sub-shell 100a extend at an angle of 180° in the circumferential Y direction and the second sub-shell 100b extend at an angle of 180° in the circumferential Y direction, the flow resistance of the heat exchange medium during the circumferential flow process can be reduced, thereby reducing operating energy consumption.

[0067] See Figure 3 and Figure 7 In other embodiments, the first conduit 310 and the second conduit 320 are arranged adjacent to each other in the circumferential Y direction of the annular housing 100, and in the circumferential Y direction, there is a second partition 230 extending in the axial Z direction between the first conduit 310 and the second conduit 320.

[0068] By setting the second baffle 230, the first pipe 310 and the second pipe 320 can be separated in the circumferential Y direction, thereby preventing the heat exchange medium flowing into the first inlet 221 from mixing with the heat exchange medium flowing out of the first outlet 222, thus providing constraint for the directional flow of the heat exchange medium.

[0069] In practice, when the heat exchange medium enters the heat exchange channel 220 within the annular shell 100 from the first pipe 310, the second baffle 230 guides the heat exchange medium through the first inlet 221 into each heat exchange channel 220 for heat exchange, effectively preventing disorderly diffusion of the heat exchange medium. After the heat exchange medium completes heat exchange, it is collected at the first outlet 222 and flows into the connecting channel 410. Through the separation effect of the second baffle 230, it can prevent the heat exchange medium that has completed heat exchange from mixing with the heat exchange medium that has just entered the annular shell 100, ensuring that each heat exchange channel 220 obtains a stable flow rate and direction of heat exchange medium, thereby improving the orderliness and efficiency of heat exchange. Furthermore, by arranging the first pipe 310 and the second pipe 320 adjacent to each other in the circumferential Y direction of the annular housing 100, the installation areas of the first pipe 310 and the second pipe 320 can be more concentrated in the circumferential Y direction, thereby reducing the risk of interference between the first pipe 310 and the second pipe 320 and other components, and simplifying the docking layout between the first pipe 310 and the second pipe 320 and the external heat exchange medium conveying pipeline.

[0070] See Figure 2 In some embodiments, the piping assembly 300 further includes a first support member 330, which is connected to the annular housing 100 and fixedly connected to the first pipe 310 and the second pipe 320 respectively to support the first pipe 310 and the second pipe 320.

[0071] Optionally, the first support member 330 may include a support plate, support column, etc. The first support member 330 can be firmly connected to the wall of the annular shell 100 by means of welding, bolting, etc., so as to form a reliable support base on the annular shell 100. At the same time, the first support member 330 is fixed to the first pipe 310 and the second pipe 320 by means of welding, snap-fit ​​fasteners, etc., so that the first pipe 310 and the second pipe 320 can be stably supported by the first support member 330, effectively preventing the first pipe 310 and the second pipe 320 from shifting position or vibrating due to their own weight, the impact force of the heat exchange medium flow, etc., thereby enhancing the structural stability of the connection between the pipe assembly 300 and the annular shell 100.

[0072] See Figure 5 In some embodiments, a drain assembly 500 connected to the outer casing 120 is also included. A drain channel 420 extending along the Z-axis is provided in the receiving cavity. The drain channel 420 is located at the lowest point of the receiving cavity in the direction of gravity. Each heat exchange channel 220 is connected to each other in the area where the drain channel 420 is located. One end of the drain assembly 500 connected to the outer casing 120 is located in the area where the drain channel 420 is located. The drain assembly 500 can discharge the dirt collected in the drain channel 420.

[0073] It is understood that a drain channel 420 extending along the Z-axis is provided within the housing cavity, and the drain channel 420 is located at the lowest point of the housing cavity in the direction of gravity. Therefore, impurities, deposits, and other contaminants carried in the heat exchange medium will naturally settle and collect in the drain channel 420 under gravity. Simultaneously, each heat exchange channel 220 is interconnected in the area where the drain channel 420 is located, allowing contaminants in each heat exchange channel 220 to enter the drain channel 420 through this interconnected area, preventing contaminants from accumulating and clogging in a single heat exchange channel 220, and ensuring that all heat exchange channels 220 remain unobstructed. Furthermore, the end of the drain assembly 500 connected to the outer shell 120 is located in the area where the drain channel 420 is located. When cleaning is required, the drain assembly 500 can discharge the contaminants collected in the drain channel 420 to the outside of the annular shell 100, thereby achieving cleaning and maintenance of the housing cavity and each heat exchange channel 220, ensuring long-term stable heat exchange operation of the thermal management device.

[0074] In practice, the axial direction Z of the annular housing 100 can have a predetermined angle with the horizontal plane. That is, the annular housing 100 can be set at an appropriate angle. Thus, the sewage discharge assembly 500 can be connected to the lowest point in the inclined direction of the annular housing 100. This allows the sewage to be discharged to the outside of the annular housing 100 more efficiently under the action of gravity.

[0075] It should also be noted that when the second pipe 320 is located at the lowest point of the annular shell 100 in the direction of gravity, there is no need to install a drain assembly 500. That is, the second pipe 320 itself can serve to drain the contaminants in the heat exchange channel 220. This simplifies the structure of the thermal management device, reduces the number of parts and processing and assembly steps, and lowers production and subsequent maintenance costs. Furthermore, when the second pipe 320 is located at the lowest point of the annular shell 100 in the direction of gravity, the corresponding connecting channel 410 of the second pipe 320 can serve as the drain channel 420.

[0076] In some alternative embodiments, the first conduit 310 and the second conduit 320 may be located at any position on the annular housing 100 in the circumferential Y direction.

[0077] See Figures 8 to 10 In some embodiments, the sewage discharge assembly 500 includes a sewage discharge pipe 510 and a second support member 520. The sewage discharge pipe 510 is provided with a valve body 511, which can control the opening and closing of the sewage discharge pipe 510. The second support member 520 is connected to the outer casing 120 and is fixedly connected to the sewage discharge pipe 510 to support the sewage discharge pipe 510.

[0078] Optionally, the valve body 511 can be manually operated or automatically controlled, and can be at least one of a ball valve or a gate valve. Under normal operating conditions, the valve body 511 can be in the closed state, effectively preventing the heat exchange medium in the containment cavity from leaking through the drain pipe 510, thus ensuring the pressure stability of the thermal management device. When it is necessary to clean the contaminants in the containment cavity, the valve body 511 can be in the open state, allowing the contaminants collected in the drain channel 420 to be discharged through the drain pipe 510.

[0079] Optionally, the second support member 520 may include a support plate, support column, etc. The second support member 520 can be firmly connected to the outer wall of the outer shell 120 by welding, bolting, or other methods to form a reliable support base. The fixed connection between the second support member 520 and the sewage pipe 510 can be achieved by using snap-fit ​​fasteners or welding to realize a stable connection between the sewage pipe 510 and the annular shell 100, thereby improving the overall structural stability of the sewage discharge assembly 500.

[0080] See Figure 11In some embodiments, the first partition 210 extends along at least one of a straight line trajectory, a broken line trajectory, and a curved trajectory in the circumferential Y direction.

[0081] In some other embodiments, a third partition 240 extending a predetermined length along the axial direction Z is provided on the first partition 210.

[0082] It should be noted that when the first partition 210 extends along a straight trajectory in the circumferential Y direction, the structure of the first partition 210 is simple and easy to process, and it can form a regular heat exchange channel 220. When the first partition 210 extends along a broken trajectory in the circumferential Y direction, the heat exchange path of the heat exchange channel 220 in the circumferential Y direction can be adjusted by the bend, and local eddies or turbulence can be formed at the bend, so that the internal mixing of the heat exchange medium is more complete, which helps to improve the heat exchange effect. When the first partition 210 extends along a curved trajectory in the circumferential Y direction, it can guide the heat exchange medium to flow along the curved path, enhance the disturbance to strengthen the heat exchange.

[0083] It should also be noted that by setting the third baffle 240, when the heat exchange medium flows in the heat exchange channel 220, the local flow disturbance will be generated due to the obstruction and guidance of the third baffle 240, which makes the heat transfer inside the heat exchange medium faster and increases the contact frequency between the heat exchange medium and the wall of the annular shell 100, thereby effectively enhancing the heat exchange efficiency in the heat exchange channel 220.

[0084] In specific implementation, the first partition 210 can be configured to extend along a straight line trajectory, or it can be configured to extend along a broken line trajectory or a curved trajectory. Alternatively, a third partition 240 can be added to the first partition 210 at the same time. That is to say, the first partition 210 can be set independently, or it can be set in combination with the third partition 240. This application embodiment does not impose any limitations on this.

[0085] See Figure 11 In some embodiments, an exhaust valve 600 is also included, which is disposed on one of the housing 120 and the piping assembly 300, and the exhaust valve 600 is disposed near the highest point of the housing 120 or the piping assembly 300 in the direction of gravity at the lowest point.

[0086] Since gases are generally less dense, during operation of the thermal management device, any gases present inside will naturally converge towards the highest point in the direction of gravity. By installing the exhaust valve 600, these gases can be efficiently discharged. The exhaust valve 600 ensures that gases inside the annular shell 100 are discharged in a timely manner, preventing gas blockage from hindering the flow of the heat exchange medium and allowing the heat exchange medium to fully fill each heat exchange channel 220, thereby improving heat exchange efficiency.

[0087] Based on the above embodiments, this application provides a generator, which may include a generator body and a thermal management device provided in any of the above embodiments. The generator body may include a rotor and a stator coaxially arranged and rotatably coupled, and the thermal management device may be disposed on the stator. By employing the thermal management device provided in this application, the heat generated during stator operation can be efficiently removed, maintaining a stable working environment between the rotor and stator, reducing the adverse effects of high temperature on the generator's internal structure, thereby ensuring long-term stable power output and improving power generation efficiency.

[0088] Based on the above embodiments, this application provides a wind turbine generator set. A wind turbine generator set typically includes a tower, a nacelle, a generator, and a rotor. The tower is connected to the wind turbine foundation, the nacelle is located at the top of the tower, and the generator is located within the nacelle. In some examples, the generator may be at least partially located outside the nacelle; conversely, in some examples, the generator may be at least partially located inside the nacelle. The rotor includes a hub and multiple blades connected to the hub. When wind power acts on the blades, it drives the entire rotor to rotate, further driving the generator to work and convert wind energy into electrical energy.

[0089] By using the thermal management device or the generator provided in the embodiments of this application, the heat generated during the operation of the generator can be efficiently removed, ensuring the high efficiency of wind energy to electricity conversion, thereby reducing the frequency of shutdown maintenance caused by overheating, reducing long-term operation and maintenance costs, and improving the operational reliability and power generation efficiency of the wind turbine generator set.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A thermal management device, characterized in that, include: An annular shell (100) includes an inner shell (110) and an outer shell (120) distributed along its own radial direction (X), and a closed receiving cavity is formed between the inner shell (110) and the outer shell (120); A partition assembly is disposed in the receiving cavity. The partition assembly includes a plurality of first partitions (210), each of the first partitions (210) extending circumferentially (Y) along the annular housing (100). The first partitions (210) are spaced apart axially (Z) along the annular housing (100) to divide the receiving cavity into a plurality of heat exchange channels (220) extending circumferentially (Y). Each heat exchange channel (220) has a first inlet (221) and a first outlet (222). A piping assembly (300) is connected to the annular housing (100) and communicates with the receiving cavity. The piping assembly (300) includes a first pipe (310) and a second pipe (320). The first pipe (310) is communicated with the first inlet (221), and the second pipe (320) is communicated with the first outlet (222).

2. The thermal management device according to claim 1, characterized in that, The flow rate of each heat exchange channel (220) along the axial direction (Z) is the same.

3. The thermal management device according to claim 1, characterized in that, Each of the first partitions (210) is an arc-shaped plate extending at a predetermined angle along the circumferential direction (Y), and a plurality of the first partitions (210) are uniformly arranged in the axial direction (Z), with equal spacing between each pair of adjacent first partitions (210).

4. The thermal management device according to claim 1, characterized in that, The cavity is provided with a connecting channel (410) extending along the axial direction (Z), the first pipeline (310) is connected to at least two first inlets (221) through one of the connecting channels (410); and / or, the second pipeline (320) is connected to at least two first outlets (222) through one of the connecting channels (410).

5. The thermal management device according to claim 1, characterized in that, The first conduit (310) and the second conduit (320) are spaced apart and staggered in the axial direction (Z).

6. The thermal management device according to claim 5, characterized in that, The annular housing (100) has a first end (130) and a second end (140) opposite each other in the axial direction (Z). The first pipe (310) is disposed close to the first end (130) relative to the second pipe (320). In the axial direction (Z), the distance between the first pipe (310) and the first end (130) is d1, the distance between the first pipe (310) and the second pipe (320) is d2, and the distance between the second pipe (320) and the second end (140) is d3, where d1=d2=d3. And / or, along the circumferential direction (Y), the perimeter of the outer casing (120) is L1, the minimum distance between the first pipe (310) and the first partition (210) is L2, wherein 0.01×L1≤L2≤0.1×L1; the minimum distance between the second pipe (320) and the first partition (210) is L3, wherein 0.01×L1≤L3≤0.1×L1.

7. The thermal management device according to claim 6, characterized in that, The first conduit (310) and the second conduit (320) are capable of dividing the annular housing (100) into a first sub-shell (100a) and a second sub-shell (100b) in the circumferential direction (Y), wherein the extension angle of the first sub-shell (100a) in the circumferential direction (Y) is equal to the extension angle of the second sub-shell (100b) in the circumferential direction (Y).

8. The thermal management device according to claim 6, characterized in that, The first pipe (310) and the second pipe (320) are arranged adjacent to each other in the circumferential (Y) direction of the annular housing (100), and in the circumferential (Y) direction, there is a second partition (230) extending along the axial (Z) direction between the first pipe (310) and the second pipe (320).

9. The thermal management device according to claim 5, characterized in that, The pipeline assembly (300) further includes a first support member (330), which is connected to the annular housing (100) and fixedly connected to the first pipeline (310) and the second pipeline (320) respectively to support the first pipeline (310) and the second pipeline (320).

10. The thermal management device according to claim 1, characterized in that, It also includes a drain assembly (500) connected to the outer shell (120), and a drain channel (420) extending along the axial direction (Z) is provided in the cavity. The drain channel (420) is located at the lowest point of the cavity in the direction of gravity. Each heat exchange channel (220) is connected to each other in the area where the drain channel (420) is located. One end of the drain assembly (500) connected to the outer shell (120) is located in the area where the drain channel (420) is located. The drain assembly (500) can discharge the dirt collected in the drain channel (420).

11. The thermal management device according to claim 10, characterized in that, The sewage discharge assembly (500) includes a sewage discharge pipe (510) and a second support member (520). The sewage discharge pipe (510) is provided with a valve body (511), which can control the opening and closing of the sewage discharge pipe (510). The second support member (520) is connected to the outer shell (120) and fixedly connected to the drain pipe (510) to support the drain pipe (510).

12. The thermal management device according to any one of claims 1 to 11, characterized in that, The first partition (210) extends along at least one of a straight line trajectory, a broken line trajectory, and a curved trajectory in the circumferential direction (Y); And / or, the first partition (210) is provided with a third partition (240) extending a predetermined length along the axial direction (Z).

13. The thermal management device according to any one of claims 1 to 11, characterized in that, It also includes an exhaust valve (600) disposed on one of the housing (120) and the piping assembly (300), and the exhaust valve (600) is disposed near the highest point of the housing (120) or the piping assembly (300) in the direction of gravity.

14. A generator, characterized in that, include: The main power generation unit includes a rotor and a stator that are coaxially mounted and rotate in conjunction with each other; The thermal management device as described in any one of claims 1 to 13, wherein the thermal management device is disposed on the stator.

15. A wind turbine generator set, characterized in that, It includes the thermal management device as described in any one of claims 1 to 13 or the generator as described in claim 14.

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