Heat exchange assembly, heat sink, lubrication cooling system and wind turbine generator set

Abstract

The application relates to a heat exchange assembly, a radiator, a lubricating cooling system and a wind turbine generator set. The heat exchange assembly comprises a main pipeline and a branch pipeline group. The main pipeline comprises a first pipeline and a second pipeline which are arranged along a first direction respectively. The first pipeline is provided with an inlet. The first pipeline is provided with the second pipeline on both sides in a second direction. The second pipeline is provided with an outlet. The second direction intersects the first direction. The branch pipeline group is communicated with the first pipeline and the second pipeline. The branch pipeline group comprises a plurality of branch pipelines which are arranged along the first direction at intervals. Heat dissipation channels are formed between adjacent branch pipelines. Lubricating medium to be cooled flows into the inlet, through the plurality of branch pipelines and to the outlet, and exchanges heat with cooling medium flowing through the heat dissipation channels. The heat exchange assembly, the radiator, the lubricating cooling system and the wind turbine generator set in the application can improve the heat exchange efficiency of the heat exchange assembly, reduce the risk of over-temperature alarm of the transmission system and shutdown of the wind turbine generator set.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a heat exchange component, radiator, lubrication and cooling system and wind turbine generator set. Background Technology

[0002] The transmission system is the core of a wind turbine, and its reliability is crucial for the normal operation of the unit. Currently, wind turbines are reaching increasingly larger power ratings. With the application of high-power units, the transmission power of the transmission system is also increasing, leading to greater cooling requirements and a higher flow rate of the lubricating medium used for cooling in the transmission system.

[0003] The lubrication and cooling system, as a core component for cooling shafts and gears in a transmission system, cools the lubricating medium by introducing it into its heat exchange components. However, current heat exchange components have low heat exchange efficiency, leading to over-temperature alarms in the transmission system and shutdowns of wind turbine generators. Utility Model Content

[0004] This application provides a heat exchange component, a radiator, a lubrication and cooling system, and a wind turbine generator set, which can improve the heat exchange efficiency of the heat exchange component and reduce the risk of over-temperature alarms in the transmission system and shutdown of the wind turbine generator set.

[0005] In a first aspect, an embodiment of this application provides a heat exchange assembly, including a main pipeline and a group of branch pipelines. The main pipeline includes a first pipeline and a second pipeline extending along a first direction. The first pipeline has an inlet, and second pipelines are respectively provided on both sides of the first pipeline in a second direction. The second pipelines have outlets, and the second direction intersects the first direction. The group of branch pipelines connects the first pipeline and the second pipeline, and includes a plurality of branch pipelines spaced apart along the first direction. A heat dissipation channel is formed between adjacent branch pipelines. The lubricating medium to be cooled flows through the inlet and the plurality of branch pipelines to the outlet and exchanges heat with the cooling medium flowing through the heat dissipation channel.

[0006] According to one aspect of the embodiments of this application, the number of first pipes is N, the number of second pipes is N+1, and the first pipes and second pipes are alternately arranged along a second direction, where N is a positive integer and greater than or equal to 1.

[0007] According to one aspect of the embodiments of this application, the heat exchange assembly further includes a bypass pipeline and a bypass valve. The bypass pipeline is connected to the first pipeline and the second pipeline in a second direction. The bypass valve is disposed at the junction of the first pipeline and the bypass pipeline and is used to control the on / off state of the first pipeline and the bypass pipeline.

[0008] According to one aspect of the embodiments of this application, the bypass valve includes a pressure relief valve configured to open when the pressure value of the first pipeline is greater than a preset value, and to connect the first pipeline and the bypass pipeline.

[0009] According to one aspect of the embodiments of this application, the main pipeline includes a first end and a second end disposed opposite to each other along a first direction, with an inlet disposed at the first end and a bypass pipeline and an outlet disposed at the second end.

[0010] According to one aspect of the embodiments of this application, the heat exchange assembly further includes a heat dissipation fin group, which is disposed between two adjacent branch pipes. The heat dissipation fin group includes a plurality of heat dissipation fins, and a heat dissipation channel is formed between adjacent heat dissipation fins.

[0011] Secondly, according to the embodiments of this application, a radiator is provided, including an airflow generating device and a heat exchange component as described in the above embodiments. The airflow generating device is used to generate a cooling medium flowing through the heat dissipation channel.

[0012] According to one aspect of the embodiments of this application, the airflow generating device includes a housing, a mounting bracket, an airflow generating assembly, and a guide ring. The housing has a cavity and includes a first opening and a second opening communicating with the cavity. A heat exchange assembly is connected to the first opening. The airflow generating assembly is detachably connected to the second opening via the mounting bracket. The guide ring is disposed in the second opening and surrounds the periphery of the airflow generating assembly.

[0013] According to one aspect of the embodiments of this application, the flow guide ring includes a first flow guide ring portion, which extends from a second opening toward the heat exchange component, and the end of the first flow guide ring portion near the heat exchange component expands outward to form a transition section.

[0014] According to one aspect of the embodiments of this application, the housing includes sidewalls that enclose a cavity, and the port of the transition section at least partially abuts against the surface of the sidewalls facing the cavity.

[0015] According to one aspect of the embodiments of this application, the flow guide ring includes a second flow guide ring portion, which is detachably connected to the side of the second opening away from the heat exchange assembly. The second flow guide ring portion includes a plurality of flow guide ring segments arranged along its own circumference, and the ends of two adjacent flow guide ring segments are detachably connected.

[0016] According to one aspect of the embodiments of this application, the radiator further includes a protective mesh disposed at the second opening and detachably connected to the mounting bracket.

[0017] According to one aspect of the embodiments of this application, the airflow generating component is provided with a first mounting hole, and the protective net includes a protective net body and a bent portion. The protective net body includes a plurality of concentrically arranged rings, and the bent portion is connected to the rings and surrounds the rings to form a second mounting hole. The airflow generating device also includes a connector, which passes through the first mounting hole and the second mounting hole and connects the airflow generating component and the protective net to a mounting frame.

[0018] Thirdly, according to the embodiments of this application, a lubrication and cooling system is proposed, including a heat exchange component as in the first aspect or a radiator as in the second aspect, a pipe and a lubrication pump, wherein the pipe is connected to the inlet and outlet of the heat exchange component, the lubrication pump is connected to the pipe, and the lubrication pump is used to transport the lubricating medium to be cooled to the heat exchange component through the pipe.

[0019] Fourthly, according to the embodiments of this application, a wind turbine generator set is provided, including a transmission system and a lubrication and cooling system as described in the third aspect. The transmission system is provided with a lubrication channel for the passage of lubricating medium, and the lubrication channel is connected to the pipeline of the lubrication and cooling system.

[0020] The heat exchange assembly provided in this embodiment includes a first pipeline and second pipelines disposed on both sides of the first pipeline. The first pipeline has an inlet, and the second pipeline has an outlet. The first pipeline and the second pipeline are connected by a branch pipeline group. When the lubricating medium to be cooled is delivered to the inlet of the heat exchange assembly, the lubricating medium can be diverted from the first pipeline to the branch pipeline group on both sides, and flow along multiple branch pipelines of the branch pipeline group, exchanging heat with the cooling medium flowing through the heat dissipation channel between adjacent branch pipelines. Then, it flows out from the corresponding second pipeline to the outlet, realizing the cooling and temperature reduction of the lubricating medium. By diverting the lubricating medium from the first pipeline to the second pipelines on both sides, the flow path of the lubricating medium on one side can be reduced, thereby significantly reducing the flow resistance. The lubricating pump can pump a larger flow rate of lubricating medium into the heat exchange assembly under the same power, and the circulation number of the lubricating medium will also increase accordingly, thereby improving the heat exchange efficiency of the heat exchange medium and reducing the risk of over-temperature alarm of the transmission system and shutdown of the wind turbine generator. Attached Figure Description

[0021] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a heat exchange component according to an embodiment of this application;

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of a bypass valve provided in one embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the structure of a heat sink provided in one embodiment of this application. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the structure of a heat sink provided in one embodiment of this application. Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the structure of the housing provided in one embodiment of this application;

[0029] Figure 8 This is a cross-sectional view of the housing provided in one embodiment of this application;

[0030] Figure 9 This is a cross-sectional view of the housing provided in another embodiment of this application;

[0031] Figure 10 This is a schematic diagram of the structure of the second guide ring provided in one embodiment of this application;

[0032] Figure 11 This is an exploded view of the second guide coil portion provided in one embodiment of this application;

[0033] Figure 12 This is a schematic diagram of the structure of the airflow generating component, protective net, and mounting bracket provided in one embodiment of this application. Figure 1 ;

[0034] Figure 13 This is a schematic diagram of the structure of a protective net provided in one embodiment of this application;

[0035] Figure 14 This is a schematic diagram of the structure of the airflow generating component, protective net, and mounting bracket provided in one embodiment of this application. Figure 2 .

[0036] In the attached image:

[0037] 100-Transmission system; 200-Tower; 300-Nacelle; 400-Generator; 500-Impeller; 510-Hub; 520-Blade; 600-Lubrication and cooling system;

[0038] 10-Radiator;

[0039] 1-Heat exchange assembly; 11-Main pipeline; 111-First pipeline; 1111-Inlet; 112-Second pipeline; 1121-Outlet; 12-Branch pipeline assembly; 121-Branch pipeline; 13-Bypass pipeline; 14-Bypass valve; 141-Bypass valve core; 142-Elastic element; 143-Plug; 144-Sealing part; 15-Heat dissipation fin assembly;

[0040] 2-Airflow generator; 21-Housing; 211-First opening; 212-Second opening; 213-Side wall; 2131-Corner; 22-Mounting bracket; 23-Airflow generating assembly; 231-Motor; 232-Fan; 24-Guide ring; 241-First guide ring section; 2411-Transition section; 242-Second guide ring section; 2421-Guide ring section;

[0041] 3-Protective netting; 31-Protective netting body; 32-Radial reinforcing ribs; 33-Bending section;

[0042] X - Second direction; Y - First direction; Z - Third direction.

[0043] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0044] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0045] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the heat exchange components, radiators, lubrication and cooling systems, or wind turbine generators of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Please see Figure 1 , Figure 1 A schematic diagram of the structure of a wind turbine generator set according to one embodiment of this application is shown.

[0047] This application provides a wind turbine generator set, including a tower 200, a nacelle 300, a transmission system 100, a generator 400, and an impeller 500. The nacelle 300 is disposed above the tower 200, and the generator 400 and the transmission system 100 are disposed within the nacelle 300. The transmission system 100 includes a main shaft and a gearbox, and is used to connect to the impeller 500 and the generator 400. The impeller 500 includes blades 520 and a hub 510. When wind power acts on the blades 520, the impeller 500 drives the rotor of the generator 400 to rotate through the transmission system 100, causing the rotor to cut magnetic field lines to convert wind energy into electrical energy.

[0048] With the application of high-power wind turbine generator sets, the transmission power of the transmission system 100 is also increasing, and the heat dissipation requirements of the wind turbine generator set are also increasing. The transmission system 100 is equipped with a lubrication channel for the passage of lubricating medium. Since the lubricating medium has thermal conductivity and continuously flows and circulates in the lubrication channel, the heat in the transmission system 100 can be carried away by the lubricating medium.

[0049] The wind turbine generator set may include a lubrication and cooling system 600, which is connected to the transmission system 100. The lubricating medium in the transmission system 100 can flow through the hot side channel of the heat exchange component 1 in the lubrication and cooling system 600. The hot side channel can transfer the heat of the lubricating medium to the cold side channel of the heat exchange component 1, and then the heat is carried away by the cooling medium flowing through the cold side channel, thereby cooling the lubricating medium. This allows the temperature of the transmission system 100 to be maintained within a suitable range, ensuring the normal operation of the wind turbine generator set.

[0050] Among them, the heat exchange component 1 is a key component for cooling the transmission system 100. Its efficiency and reliability directly affect whether the transmission system 100 can operate normally and determine whether the wind turbine generator can generate electricity normally. However, in the existing heat exchange component 1, the flow resistance of the lubricating medium in the heat exchange component 1 is relatively large, resulting in low heat exchange efficiency. Especially when the external ambient temperature is low, the lubricating medium is prone to sticking in the heat exchange component 1, which affects the cooling effect of the lubricating medium and causes the transmission system 100 to trigger an over-temperature alarm, leading to the unit shutdown.

[0051] To overcome the above-mentioned defects, this application provides a new heat exchange component 1 and a radiator 10. The heat exchange component 1 can be applied to the radiator 10 and serve as a component of the radiator 10. Of course, it can also be produced or sold separately as an independent component.

[0052] Please see Figure 2 and Figure 3 , Figure 2 The present application shows a schematic diagram of the structure of the heat exchange assembly 1 provided in some embodiments. Figure 3 It shows Figure 2 Enlarged view of point A in the middle.

[0053] This application provides a heat exchange assembly 1, including a main pipeline 11 and a branch pipeline group 12. The main pipeline 11 includes a first pipeline 111 and a second pipeline 112 extending along a first direction Y. The first pipeline 111 is provided with an inlet 1111, and the second pipelines 112 are respectively provided on both sides of the first pipeline 111 in a second direction X. The second pipelines 112 are provided with outlets 1121, and the second direction X intersects the first direction Y. The branch pipeline group 12 connects the first pipeline 111 and the second pipeline 112. The branch pipeline group 12 includes a plurality of branch pipelines 121 spaced apart along the first direction Y. A heat dissipation channel is formed between adjacent branch pipelines 121. The lubricating medium to be cooled flows through the inlet 1111 and the plurality of branch pipelines 121 to the outlet 1121 and exchanges heat with the cooling medium flowing through the heat dissipation channel.

[0054] In this embodiment of the heat exchange assembly 1, the main pipeline 11 includes a first pipeline 111 and second pipelines 112 disposed on both sides of the first pipeline 111. The first pipeline 111 is provided with an inlet 1111, and the second pipeline 112 is provided with an outlet 1121. The first pipeline 111 and the second pipeline 112 are connected through a branch pipeline group 12. When the lubricating medium to be cooled is delivered to the inlet 1111 of the heat exchange assembly 1, the lubricating medium can be diverted from the first pipeline 111 to the branch pipeline group 12 on both sides, and flow along multiple branch pipelines 121 of the branch pipeline group 12, exchanging heat with the cooling medium flowing through the heat dissipation channel between adjacent branch pipelines 121, and then flowing out from the corresponding second pipeline 112 to the outlet 1121, thereby achieving cooling of the lubricating medium. Compared to the heat exchange assembly 1 which only includes a first pipe 111 and a second pipe 112, this embodiment of the application provides second pipes 112 on both sides of the first pipe 111. The lubricating medium can be diverted from the first pipe 111 to the second pipes 112 on both sides, shortening the flow path of the lubricating medium on one side, thereby significantly reducing the flow resistance. The lubricating pump can pump a larger flow rate of lubricating medium into the heat exchange assembly 1 at the same power, and the number of circulations of the lubricating medium will also increase accordingly. This can improve the heat exchange efficiency of the heat exchange medium and reduce the risk of over-temperature alarm of the transmission system 100 and shutdown of the wind turbine generator.

[0055] Furthermore, for the heat exchange component 1 in this embodiment, under the premise of the same heat dissipation requirements, the volume of the heat exchange component 1 can be reduced, thereby saving the space and cost occupied by the heat exchange component 1. At the same time, when the external ambient temperature is low, such as in winter, which leads to an increase in the viscosity of the lubricating medium, the heat exchange component 1 in this embodiment can reduce the risk of a decrease in the flow rate of the lubricating medium by reducing the flow resistance of the lubricating medium within the heat exchange component 1, ensuring the heat dissipation effect of the lubricating medium, and reducing the risk of over-temperature alarm of the transmission system 100°C and shutdown of the wind turbine generator.

[0056] Optionally, the distance between the first pipe 111 and the second pipe 112 on one side along the second direction X is the first distance, and the distance between the first pipe 111 and the second pipe 112 on the other side along the second direction X is the second distance. The first distance is equal to the second distance, so as to improve the uniformity of heat exchange on both sides.

[0057] Optionally, the first direction Y and the second direction X intersect, for example, the first direction Y is perpendicular to the second direction X. The branch pipe 121 extends along the second direction X and connects the first pipe 111 and the second pipe 112. One end of the branch pipe 121 is perpendicularly connected to the side wall of the first pipe 111, and the other end of the branch pipe 121 is perpendicularly connected to the side wall of the second pipe 112, so as to improve the smoothness of the flow of the lubricating medium between the main pipe 11 and the branch pipe 121 and reduce the flow resistance.

[0058] In some alternative embodiments, the number of first pipes 111 is N, the number of second pipes 112 is N+1, the first pipes 111 and the second pipes 112 are alternately arranged along the second direction X, and N is a positive integer greater than or equal to 1.

[0059] For example, there can be one first pipe 111 and two second pipes 112, with the two second pipes 112 disposed on both sides of the first pipe 111. Alternatively, there can be two first pipes 111 and three second pipes 112 (not shown in the figure), with the first pipes 111 and the second pipes 112 alternately disposed along the second direction X, so that each first pipe 111 has a second pipe 112 disposed on both sides along the second direction X, so that the lubricating medium delivered to each first pipe 111 can achieve bi-lateral flow.

[0060] Understandably, the number of first pipes 111 and second pipes 112 should not be excessive. When the number of first pipes 111 and second pipes 112 increases, for heat exchange components 1 of the same size and specifications (i.e., the dimensions of heat exchange components 1 along the second direction X remain unchanged), increasing the number of main pipes 11, while reducing flow resistance, also increases the proportion occupied by main pipes 11, reducing the installable length of branch pipe groups 12 and affecting the heat exchange effect. Therefore, the number of first pipes 111 and second pipes 112 can be appropriately adjusted to ensure the heat exchange efficiency of heat exchange components 1.

[0061] Compared to the configuration of heat exchange assembly 1 with one first pipe 111 and one second pipe 112, taking one first pipe 111 and two second pipes 112 as an example, the lubricating medium is diverted from the first pipe 111 to both sides, and the flow path of the single-sided branch pipe 121 is shortened to approximately 1 / 2. When the same flow rate of lubricating medium is supplied to heat exchange assembly 1, according to the principle of fluid dynamics, the resistance is proportional to the square of the flow velocity, so the flow resistance will be reduced to 1 / 4. After the flow resistance is reduced, with the same lubrication pump power, the flow rate of lubricating medium flowing through heat exchange assembly 1 per unit time increases, and the number of circulations is also increased, thereby improving the heat exchange efficiency of heat exchange assembly 1. At the same time, after the flow resistance is reduced, the lubricating medium in a viscous state can still maintain effective flow when the external ambient temperature is low, avoiding heat exchange interruption caused by poor lubricating medium flow, and fundamentally reducing the risk of over-temperature alarm in the transmission system 100.

[0062] For ease of description, the following description will use the example of heat exchange component 1 including a first pipe 111 and two second pipes 112.

[0063] Please see Figure 2 as well as Figure 4 , Figure 4 A schematic diagram of a bypass valve 14 provided in some embodiments of this application is shown.

[0064] In some alternative embodiments, the heat exchange assembly 1 further includes a bypass pipe 13 and a bypass valve 14. The bypass pipe 13 connects the first pipe 111 and the second pipe 112 along the second direction X. The bypass valve 14 is disposed at the junction of the first pipe 111 and the bypass pipe 13 and is used to control the opening and closing of the first pipe 111 and the bypass pipe 13.

[0065] The bypass line 13 is an independent circuit arranged in parallel with the branch line 121. When the bypass valve 14 is opened, the lubricating medium in the first line 111 can flow from the branch line 121 and the bypass line 13 to the second line 112 at the same time.

[0066] By installing a bypass pipe 13 and a bypass valve 14 within the heat exchange assembly 1, when the lubricating medium becomes partially blocked in the branch pipe group 12 due to low external ambient temperature or other reasons, causing overpressure in the pipes of the heat exchange assembly 1, the bypass pipe 13 can be used to reduce pressure and divert the flow. The bypass pipe 13 can also serve as an emergency channel, allowing the lubricating medium in the first pipe 111 to be diverted to the second pipe 112 via the bypass pipe 13, reducing the risk of damage to the heat exchange assembly 1 due to overpressure and improving the reliability of the heat exchange assembly 1.

[0067] Optionally, a bypass pipe 13 and a bypass valve 14 are provided between the first pipe 111 and the second pipes 112 on both sides to further improve the reliability of the heat exchange assembly 1.

[0068] Optionally, the flow resistance of the bypass line 13 is less than the flow resistance of any branch line 121. Because the bypass line 13 has lower resistance, more lubricating medium can be guided to flow preferentially through the bypass line 13 after the bypass valve 14 is opened, thereby achieving rapid pressure relief, improving the fault response speed of the heat exchange assembly 1 when overpressure occurs, and improving the reliability of the heat exchange assembly 1.

[0069] As an optional implementation, in the second direction X, the diameter of the bypass pipe 13 is larger than the diameter of the branch pipe 121, and / or the flow path of the bypass pipe 13 is smaller than the flow path of the branch pipe 121. The smaller flow path of the bypass pipe 13 compared to the branch pipe 121 can be understood as follows: when the branch pipe 121 is equipped with a baffle or elbow to increase the flow path and thus increase the flow velocity of the lubricating medium or the heat exchange area, the bypass pipe 13 may not be equipped with such a baffle or elbow, allowing the lubricating medium to flow more smoothly through the bypass pipe 13 and reducing the flow resistance of the bypass pipe 13.

[0070] In some alternative embodiments, the bypass valve 14 includes a pressure relief valve configured to open when the pressure value of the first line 111 is greater than a preset value, and to connect the first line 111 and the bypass line 13.

[0071] By including a pressure relief valve in the bypass valve 14, the pressure relief valve can be automatically opened when the pressure value of the first pipeline 111 is greater than a preset value, thereby improving the response speed and prioritizing pressure relief through the bypass pipeline 13, reducing damage to the heat exchange component 1 and improving the reliability of the heat exchange component 1.

[0072] In one optional implementation, the bypass valve 14 may include a bypass valve core 141, an elastic element 142, and a plug 143. The bypass valve core 141 is disposed at the junction of the first pipeline 111 and the bypass pipeline 13 and has a degree of freedom of movement relative to the first pipeline 111. The plug 143 is fixed in position and blocks the movement path of the bypass valve core 141. The elastic element 142 is connected between the bypass valve core 141 and the plug 143.

[0073] The heat exchange assembly 1 includes a normal state and a depressurized state. In the normal state, the pressure inside the heat exchange assembly 1 is less than a preset value. The bypass valve core 141 abuts against the first pipeline 111 and blocks the first pipeline 111 and the bypass pipeline 13. The elastic element 142 is in its original length state. In the depressurized state, the pressure inside the heat exchange assembly 1 is greater than the preset value. Under the pressure, the bypass valve core 141 moves relative to the first pipeline 111, connecting the first pipeline 111 and the bypass pipeline 13, thereby enabling rapid depressurization through the bypass pipeline 13. Furthermore, since the elastic element 142 is in an elastically deformed state in the depressurized state, after the pressure drops to the preset value after depressurization, the elastic element 142 can push the bypass valve core 141 to reset under its own elastic force, thereby switching the heat exchange assembly 1 to the normal state.

[0074] Optionally, the bypass valve 14 may also include a sealing part 144, which is disposed on at least one of the bypass valve core 141 and the first pipeline 111. Under normal conditions, the sealing part 144 abuts against the bypass valve core 141 and the first pipeline 111, thereby reducing the risk of lubricating medium flowing out of the bypass pipeline 13 under normal conditions and ensuring the cooling effect of the lubricating medium.

[0075] Optionally, the sealing part 144 may be configured as a sealing ring.

[0076] In some alternative embodiments, the main pipeline 11 includes a first end and a second end disposed opposite to each other along a first direction Y, with an inlet 1111 disposed at the first end, and a bypass pipeline 13 and an outlet 1121 disposed at the second end. That is, the inlet 1111 is disposed at the first end of the first pipeline 111, the outlet 1121 is disposed at the second end of the second pipeline 112, and the bypass pipeline 13 connects the second end of the first pipeline 111 and the second end of the second pipeline 112.

[0077] By placing the inlet 1111 and outlet 1121 at different ends of the main pipeline 11, the lubricating medium can flow through each branch pipeline 121 before exiting through the outlet 1121, thus improving the heat exchange efficiency of the heat exchange assembly 1. Furthermore, since the pressure at the inlet 1111 end may fluctuate, placing the bypass pipeline 13 at the second end reduces the risk of malfunction and allows for rapid discharge of the lubricating medium from the outlet 1121 in case of overpressure, thereby improving the reliability of the heat exchange assembly 1.

[0078] Please see Figures 2 to 4 In some optional embodiments, the heat exchange assembly 1 further includes a heat dissipation fin group 15, which is disposed between two adjacent branch pipes. The heat dissipation fin group 15 includes a plurality of heat dissipation fins, and a heat dissipation channel is formed between adjacent heat dissipation fins.

[0079] A heat dissipation fin assembly 15 is provided in the gap between any two branch pipes 121, and multiple heat dissipation fins of the heat dissipation fin assembly 15 are arranged along the extension direction of the branch pipe 121. The heat dissipation fins have the function of heat conduction. The heat of the lubricating medium can be conducted to the heat dissipation fins through the branch pipe 121. The heat dissipation fins can increase the heat exchange area. The cooling medium can flow through the heat dissipation channel between adjacent heat dissipation fins and carry away the heat.

[0080] Optionally, the heat dissipation fins can be at least one structural form, such as right-angle corrugated, sawtooth, louvered, straight, wave-shaped, perforated, or staggered sawtooth, and the specific structural form can be determined according to the heat dissipation requirements.

[0081] Please see Figures 1 to 6 , Figure 5 and Figure 6 A schematic diagram of the structure of a heat sink 10 provided in some embodiments of this application is shown.

[0082] This application embodiment also provides a radiator 10, including an airflow generating device 2 and a heat exchange component 1 as described in the above embodiment. The airflow generating device 2 is used to generate a cooling medium flowing through the heat dissipation channel.

[0083] The airflow generator 2 refers to a device that can actively generate airflow power. It does not produce gas, but rather causes gas to flow. The cooling medium can be air. By setting up the airflow generator 2, a cooling medium can be generated to flow through the heat dissipation channel, thereby carrying away the heat of the lubricating medium and achieving cooling of the lubricating medium.

[0084] For wind turbine generator sets, the radiator 10 can be installed inside the nacelle 300. For example, the radiator 10 can be mounted on the transmission system 100. The nacelle 300 can have an opening that connects to the external environment. The airflow generating device 2 of the radiator 10 is arranged corresponding to the opening so that the cooling medium after heat exchange can flow out to the external environment through the opening of the nacelle 300, reducing the impact on the internal components of the nacelle 300. Of course, the radiator 10 can also be installed outside the nacelle 300.

[0085] Since the radiator 10 in this application includes the heat exchange component 1 in the above embodiments, it can improve the heat dissipation efficiency of the radiator 10 compared with the existing radiator 10. Furthermore, under the same heat dissipation requirements, it can reduce the volume of the radiator 10, reduce the space occupied by the radiator 10, and reduce costs. Moreover, when the external ambient temperature is low, the lubricating medium in a viscous state can still maintain effective flow within the heat exchange component 1 of the radiator 10, avoiding heat exchange interruption caused by poor lubricating medium flow. This fundamentally reduces the occurrence of over-temperature alarms in the transmission system 100 and wind turbine generator shutdowns, thus reducing the impact on power generation.

[0086] Please see Figures 1 to 8 , Figure 7 The following is a schematic diagram of the structure of the housing 21 provided in some embodiments of this application. Figure 8 A cross-sectional view of the housing 21 provided in some embodiments of this application is shown.

[0087] In some alternative embodiments, the airflow generating device 2 includes a housing 21, a mounting bracket 22, an airflow generating assembly 23, and a guide ring 24. The housing 21 has a cavity and includes a first opening 211 and a second opening 212 communicating with the cavity. The heat exchange assembly 1 is connected to the first opening 211. The airflow generating assembly 23 is detachably connected to the second opening 212 via the mounting bracket 22. The guide ring 24 is disposed in the second opening 212 and surrounds the periphery of the airflow generating assembly 23.

[0088] The cavity of the housing 21, along with the design of the first opening 211 and the second opening 212, forms a directional airflow channel, reducing airflow diffusion loss. The airflow generating assembly 23 may include a negative pressure fan, which includes a motor 231 and a fan 232. The motor 231 drives the fan 232 to rotate and create a negative pressure environment, allowing the cooling medium to flow towards the heat exchange assembly 1 and be discharged from the airflow generating assembly 23 through the second opening 212 into the external environment, thus carrying away heat.

[0089] Optionally, the first opening 211 and the second opening 212 are arranged opposite each other along the third direction Z, which intersects with the first direction Y and the second direction X, thereby enabling the cooling medium to form a directional flow channel along the third direction Z and exchange heat with the lubricating medium in the heat exchange assembly 1, thereby improving the heat exchange effect.

[0090] The second opening 212 is provided with a flow guide ring 24, which surrounds the gas generating component and can form a guiding effect, making it easier for the cooling medium to flow in a directional manner, reducing airflow loss caused by turbulence, and improving airflow utilization.

[0091] Optionally, the airflow generating assembly 23 can be detachably connected to the second opening 212 via the mounting bracket 22, thereby facilitating maintenance of the airflow generating assembly 23. Detachability methods include bolt connection, snap-fit, magnetic attraction, etc.

[0092] In some alternative embodiments, the flow guide ring 24 includes a first flow guide ring portion 241, which extends from the second opening 212 toward the heat exchange assembly 1, and the end of the first flow guide ring portion 241 near the heat exchange assembly 1 expands outward to form a transition section 2411.

[0093] Based on the flow direction of the cooling medium, the first guide ring 241 can be understood as the air inlet guide ring.

[0094] The first guide ring portion 241 extends from the second opening portion 212 into the cavity of the housing 21. By expanding the first guide ring portion 241 outward near the end of the heat exchange component 1 to form a transition section 2411, the flow rate of the cooling medium generated by the negative pressure suction from the heat exchange component 1 can be increased, and the flow resistance of the cooling medium can be reduced. At the same time, the airflow can be constrained and guided as soon as it enters the cavity of the housing 21, avoiding the airflow diffusion and turbulence in the cavity and reducing the flow loss caused by turbulence.

[0095] Optionally, the first guide ring portion 241 and the housing 21 are configured as an integral structure.

[0096] Please see Figures 1 to 9 , Figure 9 Cross-sectional views of housing 21 provided in other embodiments of this application are shown. In some alternative embodiments, housing 21 includes sidewalls 213 that enclose a cavity, and the port of transition section 2411 at least partially abuts against the surface of sidewall 213 facing the cavity.

[0097] Since the first guide ring portion 241 extends outward to form a transition section 2411 near the end of the heat exchange component 1, by at least partially abutting the port of the transition section 2411 against the surface of the side wall 213 facing the cavity, the guiding effect of the cooling medium entering the housing 21 can be improved, the risk of the cooling medium spreading and becoming turbulent in the housing 21 can be reduced, the air volume utilization rate can be improved, and the airflow path can be made more stable and reliable.

[0098] Optionally, the sidewall 213 includes multiple wall portions connected end to end, with a corner 2131 formed between adjacent wall portions. The port of the transition section 2411 extends at least to the corner 2131 and abuts against the surface of the corner 2131 facing the cavity. Since turbulence is more likely to form at the corner 2131 after the cooling medium enters the housing 21, extending the port of the transition section 2411 at least to the corner 2131 allows the cooling medium entering the cavity to be more reliably guided to the second opening 212 via the transition section 2411, thereby further improving the guiding effect.

[0099] Understandably, depending on the manufacturing conditions of the housing 21 and the first guide ring portion 241, the port of the transition section 2411 can partially abut against the surface of the side wall 213 facing the cavity, or it can abut against the entire circumference of the surface of the side wall 213 facing the cavity. Furthermore, when the port of the transition section 2411 partially abuts against the surface of the side wall 213 facing the cavity, the position where the port of the transition section 2411 forms a gap with the side wall 213 can also be connected by other sealing structures or windproof structures, thus ensuring that the cooling medium entering the housing 21 can be stably and reliably guided to the second opening portion 212 through the first guide ring portion 241.

[0100] Optionally, the transition section 2411 has a rounded corner structure to improve the guiding effect on airflow.

[0101] The radius of the fillet of the transition section 2411, the inner diameter of the first guide ring 241, the size of the shell 21 along the third direction Z, and the distance between the end of the first guide ring 241 near the heat exchange component 1 and the heat exchange component 1 along the third direction Z can all be adjusted according to the structural parameters of the airflow generating component 23, so as to increase the airflow of the airflow generating component 23 from the heat exchange component 1, further reduce the flow resistance of the cooling medium, and reduce the flow loss caused by turbulence.

[0102] Please see Figures 1 to 11 , Figure 10 This is a schematic diagram of the structure of the second guide ring portion 242 provided in one embodiment of this application. Figure 11 This is an exploded view of the second guide coil portion 242 provided in one embodiment of this application.

[0103] In some alternative embodiments, the flow guide ring 24 includes a second flow guide ring portion 242, which is detachably connected to the side of the second opening 212 away from the heat exchange assembly 1. The second flow guide ring portion 242 includes a plurality of flow guide ring segments 2421 arranged along its own circumference, and the ends of two adjacent flow guide ring segments 2421 are detachably connected.

[0104] Based on the flow direction of the cooling medium, the second guide ring 242 can be understood as the outlet guide ring. The second guide ring 242 is located on the exhaust side of the negative pressure fan outside the second opening 212, and can guide the discharged high-temperature airflow in a directional manner to avoid heat backflow caused by disordered diffusion.

[0105] By including multiple guide ring segments 2421 arranged along its circumference in the second guide ring portion 242, and detachably connecting the ends of two adjacent guide ring segments 2421, i.e. setting the second guide ring portion 242 in a centrally symmetrical and detachable form, the second guide ring portion 242 can be opened circumferentially for symmetrical removal. This makes it easier to remove the second guide ring portion 242 and repair the airflow generating component 23 when the maintenance space is limited in the third direction Z. This reduces on-site maintenance time and lowers maintenance difficulty.

[0106] Optionally, the end of the guide ring segment 2421 may be provided with a connecting flange, and the second guide ring part 242 is formed by connecting the connecting flanges of two adjacent guide ring segments 2421.

[0107] Optionally, the connecting flange is located on the inner side of the guide coil section 2421 to avoid interference with other connecting structures that may be located on the outer side of the guide coil section 2421, making it easier to disassemble and assemble the guide coil section 2421.

[0108] Please see Figures 1 to 12 , Figure 12 This is a schematic diagram of the structure of the airflow generating component 23, the protective net 3, and the mounting bracket 22 provided in one embodiment of this application.

[0109] In some alternative embodiments, the radiator 10 further includes a protective mesh 3 disposed at the second opening 212 and detachably connected to the mounting bracket 22.

[0110] The protective net 3, as a safety protection component, is used to block foreign objects from entering. It can be made of metal mesh, high-strength plastic mesh, etc. Its overall outline is adapted to the second opening 212 and covers the opening area of ​​the second opening 212. Compared with welding the protective net 3 to the housing 21, this embodiment of the application detachably connects the protective net 3 to the mounting bracket 22, which can reduce the failure caused by the weld points falling off during long-term vibration and improve the reliability of the connection between the protective net 3 and the mounting bracket 22.

[0111] Alternatively, the protective net 3 can be connected to the mounting bracket 22 by bolt fastening.

[0112] Please see Figures 1 to 14 , Figure 13 This is a schematic diagram of the structure of the protective net 3 provided in one embodiment of this application. Figure 14 This is a schematic diagram of the structure of the airflow generating component 23, the protective net 3, and the mounting bracket 22 provided in one embodiment of this application.

[0113] In one optional implementation, the airflow generating component 23 is provided with a first mounting hole. The protective net 3 includes a protective net body 31 and a bending portion 33. The protective net body 31 includes multiple concentrically arranged rings. The bending portion 33 is connected to the rings and surrounds the rings to form a second mounting hole. The airflow generating device 2 also includes a connector that passes through the first and second mounting holes and connects the airflow generating component 23 and the protective net 3 to the mounting frame 22.

[0114] The protective net body 31 is composed of multiple concentrically arranged rings, such as circles. The protective net body 31 may also include radial reinforcing ribs 32, which connect the rings.

[0115] Optionally, there may be multiple radial stiffeners 32, with two of them forming a group and multiple groups in total. The two radial stiffeners 32 in each group are arranged in a 20° V-shape, thereby improving the structural rigidity of the protective net body 31, increasing its reliability and service life.

[0116] The bending part 33 can be set on the protective net body 31. The bending part 33 adopts a U-shaped bending layout to form a second mounting hole with the ring. The second mounting hole is adapted to the first mounting hole of the airflow generating component 23, so that the protective net 3 and the airflow generating component 23 can share the same mounting bolt. Thus, under the premise of meeting the IP protection level and safety standards, the resistance coefficient of the protective net 3 to the air outlet can be reduced to the maximum extent, the air volume can be increased, and the heat dissipation efficiency can be increased.

[0117] According to an embodiment of this application, a lubrication cooling system 600 is also provided, including the heat exchange component 1 in the above embodiments or the radiator 10 in the above embodiments. The lubrication cooling system 600 also includes a pipe and a lubrication pump. The pipe is connected to the inlet 1111 and the outlet 1121 of the heat exchange component 1. The lubrication pump is connected to the pipe and is used to draw the lubricating medium to be cooled and transport it to the heat exchange component 1 through the pipe.

[0118] In addition, according to the embodiments of this application, a wind turbine generator set is also provided, including a transmission system 100 and a lubrication and cooling system 600. The transmission system 100 is provided with a lubrication channel for the passage of lubricating medium, and the lubrication channel is connected to the pipe of the lubrication and cooling system 600.

[0119] The lubrication and cooling system 600 and the wind turbine generator set in this application embodiment include the heat exchange component 1 or radiator 10 in the above embodiment. Therefore, they also have high heat exchange efficiency, good cooling effect of lubricating medium, and can reduce the risk of over-temperature alarm of transmission system 100 and shutdown of wind turbine generator set, and are easy to promote and apply.

[0120] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange component, characterized in that, include: The main pipeline (11) includes a first pipeline (111) and a second pipeline (112) extending along a first direction (Y). The first pipeline (111) is provided with an inlet (1111). The second pipeline (112) is provided on both sides of the first pipeline (111) in a second direction (X). The second pipeline (112) is provided with an outlet (1121). The second direction (X) intersects with the first direction (Y). A branch pipe group (12) connects the first pipe (111) and the second pipe (112). The branch pipe group (12) includes a plurality of branch pipes (121) spaced apart along the first direction (Y). A heat dissipation channel is formed between adjacent branch pipes (121). The lubricating medium to be cooled flows through the inlet (1111) and the plurality of branch pipes (121) to the outlet (1121) and exchanges heat with the cooling medium flowing through the heat dissipation channel.

2. The heat exchange assembly according to claim 1, characterized in that, The number of the first pipe (111) is N, the number of the second pipe (112) is N+1, and the first pipe (111) and the second pipe (112) are alternately arranged along the second direction (X), where N is a positive integer and greater than or equal to 1.

3. The heat exchange assembly according to claim 1, characterized in that, The heat exchange assembly (1) further includes a bypass pipe (13) and a bypass valve (14). The bypass pipe (13) connects the first pipe (111) and the second pipe (112) along the second direction (X). The bypass valve (14) is located at the junction of the first pipe (111) and the bypass pipe (13). The bypass valve (14) is used to control the opening and closing of the first pipe (111) and the bypass pipe (13).

4. The heat exchange assembly according to claim 3, characterized in that, The bypass valve (14) includes a pressure relief valve configured to open when the pressure value of the first pipeline (111) is greater than a preset value, and to connect the first pipeline (111) and the bypass pipeline (13).

5. The heat exchange assembly according to claim 3, characterized in that, The main pipeline (11) includes a first end and a second end arranged opposite to each other along a first direction (Y), the inlet (1111) is located at the first end, and the bypass pipeline (13) and the outlet (1121) are located at the second end.

6. The heat exchange assembly according to claim 1, characterized in that, The heat exchange assembly (1) further includes a heat dissipation fin group (15), which is disposed between two adjacent branch pipes (121). The heat dissipation fin group (15) includes multiple heat dissipation fins, and the heat dissipation channel is formed between adjacent heat dissipation fins.

7. A radiator, characterized in that, It includes an airflow generating device (2) and a heat exchange assembly (1) as described in any one of claims 1 to 6, wherein the airflow generating device (2) is used to generate a cooling medium flowing through the heat dissipation channel.

8. The radiator according to claim 7, characterized in that, The airflow generating device (2) includes a housing (21), a mounting bracket (22), an airflow generating assembly (23), and a guide ring (24); The housing (21) has a cavity and includes a first opening (211) and a second opening (212) communicating with the cavity. The heat exchange assembly (1) is connected to the first opening (211). The airflow generating assembly (23) is detachably connected to the second opening (212) via a mounting bracket (22). The guide ring (24) is disposed in the second opening (212) and surrounds the periphery of the airflow generating assembly (23).

9. The radiator according to claim 8, characterized in that, The flow guide ring (24) includes a first flow guide ring portion (241), which extends from the second opening portion (212) toward the heat exchange component (1), and the first flow guide ring portion (241) extends outward near the end of the heat exchange component (1) to form a transition section (2411).

10. The radiator according to claim 9, characterized in that, The housing (21) includes a sidewall (213) that encloses the cavity, and the port of the transition section (2411) at least partially abuts against the surface of the sidewall (213) facing the cavity.

11. The radiator according to claim 8, characterized in that, The flow guide ring (24) includes a second flow guide ring portion (242), which is detachably connected to the side of the second opening (212) away from the heat exchange assembly (1). The second flow guide ring portion (242) includes a plurality of flow guide ring segments (2421) arranged along its circumference, and the ends of two adjacent flow guide ring segments (2421) are detachably connected.

12. The radiator according to claim 10, characterized in that, The radiator (10) also includes a protective net (3), which is disposed at the second opening (212) and detachably connected to the mounting bracket (22).

13. The radiator according to claim 12, characterized in that, The airflow generating component (23) is provided with a first mounting hole. The protective net (3) includes a protective net body (31) and a bending part (33). The protective net body (31) includes a plurality of concentrically arranged rings. The bending part (33) is connected to the rings and surrounds the rings to form a second mounting hole. The airflow generating device (2) further includes a connector, which passes through the first mounting hole and the second mounting hole and connects the airflow generating component (23) and the protective net (3) to the mounting frame (22).

14. A lubrication and cooling system, characterized in that, include: The heat exchange assembly (1) as described in any one of claims 1 to 6 or the radiator (10) as described in any one of claims 7 to 12; The pipe is connected to the heat exchange assembly (1); A lubrication pump, connected to the pipeline, is used to deliver the lubricating medium to be cooled to the heat exchange assembly (1) through the pipeline.

15. A wind turbine generator set, characterized in that, It includes a transmission system (100) and a lubrication and cooling system (600) as described in claim 14, wherein the transmission system (100) is provided with a lubrication channel for the passage of a lubricating medium, and the lubrication channel is connected to the lubrication and cooling system (600).

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