Wind turbine generator system

Abstract

The application provides a wind turbine generator set, comprising a first cabin, a second cabin, a component to be heated, a heating component, a communication passage, a first air valve and a heat storage device. The component to be heated is arranged in the first cabin; the heating component is arranged in the second cabin; the communication passage communicates the first cabin and the second cabin; the first air valve is configured to transport air in the second cabin to the first cabin; the heat storage device communicates with the first cabin and the second cabin; and the heat storage device is used for storing heat from the second cabin and supplying heat to the first cabin. In this way, the heating of the component to be heated can be realized without additional heating devices (such as heating furnaces, heating pipes and the like), which is conducive to improving the heating efficiency of the component to be heated, improving the starting speed of the wind turbine generator set, and further improving the power generation efficiency of the wind turbine generator set.

Description

Technical Field

[0001] This application relates to the field of power generation technology, specifically to a wind turbine generator set. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. The reliability and power generation efficiency of a wind turbine directly affect the economic benefits of a wind power project.

[0003] The working environment of wind turbines is complex and variable. In winter, the temperature inside the nacelle of a wind turbine is usually low (such as below -10°C), which may cause the generator set to fail to start normally, thus reducing the power generation efficiency of the wind turbine. Utility Model Content

[0004] This application provides a wind turbine generator set to solve the problem of how to start the generator set in a low-temperature environment.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] This application provides a wind turbine generator set, comprising: a first compartment, a second compartment, a component to be heated, a heating component, a connecting passage, a first air valve, and a heat storage device. The component to be heated is disposed in the first compartment; the heating component is disposed in the second compartment; the connecting passage connects the first compartment and the second compartment; the first air valve is configured to deliver air from the second compartment to the first compartment; the heat storage device is connected to both the first and second compartments; the heat storage device is used to store heat from the second compartment and to supply heat to the first compartment.

[0007] In some possible implementations, the components to be heated include a gearbox and / or an electrical cabinet.

[0008] In some possible implementations, the connecting passage has multiple air outlets; each air outlet is connected to the first compartment; there are multiple components to be heated, and each component to be heated corresponds to one of the multiple air outlets, with each air outlet facing the corresponding component to be heated.

[0009] In some possible implementations, the wind turbine generator set also includes: multiple second air valves, each corresponding to a multiple air outlet, with each second air valve located at the corresponding air outlet.

[0010] In some possible implementations, the connecting passage has an air inlet; the air inlet is connected to the second compartment; and a first air valve is located at the air inlet.

[0011] In some possible implementations, the wind turbine also includes a third air valve; the second compartment has an exhaust port, and the third air valve is located at the exhaust port.

[0012] In some possible implementations, the heat-generating component includes a transformer.

[0013] In some possible implementations, the thermal storage device is a solid bed; the solid bed contains solid thermal storage material.

[0014] In some possible implementations, solid thermal storage materials include one or more of the following: gravel, pebbles, ceramic balls, refractory bricks, concrete, and magnesia bricks.

[0015] In some possible implementations, the thermal storage device is located in the first compartment; or, the thermal storage device is located in the second compartment; or, the thermal storage device is located outside the first compartment and outside the second compartment.

[0016] The wind turbine generator set provided in this application has the following beneficial effects:

[0017] The wind turbine generator set provided in this application, on the one hand, establishes a connecting passage between the first and second compartments and uses a first air valve to transfer heat generated by the heating components in the second compartment to the first compartment to heat the components to be heated, thereby increasing the temperature of the components to be heated. In this way, heating of the components to be heated can be achieved without installing additional heating devices (such as heating furnaces, heating pipes, etc.). On the other hand, the wind turbine generator set can also store excess heat energy in the second compartment through a heat storage device and supply heat to the first compartment when heat is needed, thereby heating of the components to be heated.

[0018] Both of these settings help improve the heating efficiency of the components to be heated, increase the start-up speed of the wind turbine generator, and thus improve the power generation efficiency of the wind turbine generator. Attached Figure Description

[0019] Figure 1 A schematic diagram of a wind turbine generator set provided for some embodiments of this application.

[0020] Figure 2 for Figure 1 A top view of a wind turbine generator set.

[0021] Figure 3 A flowchart of a thermal control method for a wind turbine generator set provided for some embodiments of this application.

[0022] Explanation of reference numerals in the attached figures

[0023] Wind turbine generator set 1;

[0024] First compartment 10; Second compartment 20; Discharge port 21; Component to be heated 30; Gearbox 31; Electrical cabinet 32; Heating component 40; Transformer 41; Connecting passage 50; Air outlet 51; Air inlet 52; First air valve 60; Heat storage device 70; Second air valve 80; Third air valve 90. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0026] In this application, the accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features.

[0027] Unless otherwise stated, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0028] In the description of this application, it should be understood 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In the description of this application, "several" means one or more, unless otherwise explicitly specified.

[0029] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this application.

[0030] In the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "linking," "fixing," "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of 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] In the description of this application, unless otherwise expressly defined, the terms "above," "over," "on top of," "below," "below," "under," or "below" for "first feature over second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "below," and "over" for "first feature over second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature over second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0032] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. The reliability and power generation efficiency of a wind turbine directly affect the economic benefits of a wind power project.

[0033] The working environment of wind turbines is complex and variable. In winter, the temperature inside the nacelle of a wind turbine is usually low (such as below -10°C), which may cause the generator set to fail to start normally, thus reducing the power generation efficiency of the wind turbine.

[0034] To address the aforementioned problems, some embodiments of this application provide a wind turbine generator set. On one hand, by establishing a connecting passage between a first compartment and a second compartment, and utilizing a first air valve to transfer heat generated by heating components in the second compartment to the first compartment, the generator set heats the components to be heated, thereby increasing their temperature. This allows for heating of the components without the need for additional heating devices (such as furnaces or heating pipes). On the other hand, the wind turbine generator set can also store excess heat energy in the second compartment using a heat storage device, and supply heat to the first compartment when heat is needed, thus heating the components to be heated.

[0035] Both of these settings help improve the heating efficiency of the components to be heated, increase the start-up speed of the wind turbine generator, and thus improve the power generation efficiency of the wind turbine generator.

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0037] Please see Figure 1 , Figure 1 Schematic diagram of the structure of wind turbine generator set 1 provided for some embodiments of this application; Figure 2 for Figure 1 A top view of the wind turbine generator set 1. The wind turbine generator set 1 includes: a first compartment 10, a second compartment 20, a component to be heated 30, a heating component 40, a connecting passage 50, and a first air valve 60.

[0038] The component to be heated 30 is disposed in the first compartment 10, the heating component 40 is disposed in the second compartment 20, and the connecting passage 50 connects the first compartment 10 and the second compartment 20. The first air valve 60 is configured to supply air from the second compartment 20 to the first compartment 10.

[0039] It is understandable that when the wind turbine generator set 1 starts up in low-temperature winter conditions, the temperature inside the first compartment 10 may be lower than the starting temperature (i.e., operating temperature, such as above 10°C) required for the components to be heated 30 (e.g., gearbox 31 and / or electrical cabinet 32). Therefore, it is necessary to heat the components to be heated 30 to improve their starting speed. In this case, a heating component 40 (e.g., transformer 41) is installed in the second compartment 20. The starting temperature required for the heating component 40 (e.g., above -30°C) is usually lower than the starting temperature required for the components to be heated 30, and the heating component 40 generates a large amount of heat during operation. Therefore, by connecting the first compartment 10 and the second compartment 20 through the connecting passage 50 and using the first air valve 60 to transport air from the second compartment 20 to the first compartment 10, the temperature of the first compartment 10 can be increased, thereby improving the starting speed of the components to be heated 30 and thus improving the power generation efficiency of the wind turbine generator set 1.

[0040] In some embodiments, such as Figure 1 and Figure 2 As shown, the wind turbine generator set 1 also includes a heat storage device 70, which is connected to the first compartment 10 and the second compartment 20. The heat storage device 70 is used to store heat from the second compartment 20 and to supply heat to the first compartment 10.

[0041] Understandably, the heat generated by the heating component 40 during operation can lead to excessively high temperatures in the second compartment 20. In this case, if there is no component 30 to be heated in the first compartment 10 (i.e., the components in the first compartment 10 have reached the required start-up temperature), the heat storage device 70 can store the excess heat generated by the heating component 40 to prevent the temperature of the heating component 40 from exceeding the upper limit of its operating temperature range (i.e., overheating). Furthermore, when there is a component 30 to be heated in the first compartment 10, and the heat generated by the heating component 40 is relatively low, the heat storage device 70 can also supply heat to the first compartment 10 to increase its temperature, thereby improving the start-up speed of the component 30 to be heated and ultimately increasing the power generation efficiency of the wind turbine generator set 1.

[0042] In some embodiments, the heat storage device 70 is disposed in the first compartment 10, thereby reducing heat loss during the process of the heat storage device 70 supplying heat to the second compartment 20.

[0043] In some embodiments, the heat storage device 70 is disposed in the second compartment 20, thereby reducing heat loss during the process of the second compartment 20 supplying heat to the heat storage device 70.

[0044] In some embodiments, the thermal storage device 70 is located outside the first compartment 10 and outside the second compartment 20, thus avoiding occupying space inside the first compartment 10 and the second compartment 20. For example, see... Figure 1 and Figure 2 The heat storage device 70 is located between the first compartment 10 and the second compartment 20, and is connected to both the first compartment 10 and the second compartment 20. In this way, without occupying the space inside the first compartment 10 and the second compartment 20, the heat transfer distance between the heat storage device 70 and the first compartment 10, as well as the heat transfer distance between the heat storage device 70 and the second compartment 20, can be shortened.

[0045] In some embodiments, such as Figure 1 and Figure 2 As shown, the connecting passage 50 has multiple air outlets 51; each air outlet 51 is connected to the first compartment 10; there are multiple components 30 to be heated, and each component 30 corresponds one-to-one with a single air outlet 51, with each air outlet 51 facing the corresponding component 30 to be heated. In this way, the heating effect of the components 30 to be heated can be effectively improved, and the start-up speed of the components 30 to be heated can be further increased.

[0046] For example, the multiple components to be heated 30 include a gearbox 31 and an electrical cabinet 32, and the multiple air outlets 51 include a first air outlet 51a and a second air outlet 51b. The first air outlet 51a faces the gearbox 31, and the second air outlet 51b faces the electrical cabinet 32. In this way, heat can be supplied to the gearbox 31 and the electrical cabinet 32 ​​in a targeted manner, which is beneficial to improving the start-up speed of the gearbox 31 and the electrical cabinet 32.

[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, the wind turbine generator set 1 also includes a plurality of second air valves 80, each corresponding to a plurality of air outlets 51, with each second air valve 80 located at its corresponding air outlet 51. This improves the airflow transport efficiency of the connecting passage 50, thereby increasing the heating efficiency of the component to be heated 30.

[0048] In some embodiments, each of the plurality of second air valves 80 can be independently controlled. For example, the second air valve 80 can be in an open or closed state. When the second air valve 80 is in the open state, the corresponding air outlet 51 of the second air valve 80 is open, and air in the second chamber 20 can enter the first chamber 10 through the connecting passage 50 and specifically supply heat to the corresponding heating component 30. When the second air valve 80 is in the closed state, the second air valve 80 blocks the corresponding air outlet 51.

[0049] It is understandable that different components 30 require different starting temperatures. Therefore, by controlling the opening and closing state of each second air valve 80, multiple components 30 can be heated more precisely, which helps to improve the heating efficiency of the components 30 and thus improve the power generation efficiency of the wind turbine generator set 1.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the connecting passage 50 has an air inlet 52; the air inlet 52 is connected to the second compartment 20; and a first air valve 60 is located at the air inlet 52. Thus, the first air valve 60 is closer to the heat source, which helps improve heating efficiency.

[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the wind turbine generator set 1 also includes a third air valve 90, and the second compartment 20 has an exhaust port 21, with the third air valve 90 located at the exhaust port 21.

[0052] Understandably, when the heating component 40 overheats, the temperature inside the second compartment 20 becomes too high, requiring the hot air to be expelled. In this situation, if the component 30 to be heated is present in the first compartment 10, hot air can be delivered to the second compartment 20 by opening the first air valve 60 and the second air valve 80. If the component 30 to be heated is not present in the first compartment 10, and the heat storage device 70 is not full (i.e., the temperature of the heat storage material in the heat storage device 70 is lower than the overheating temperature of the heating component 40), hot air can be delivered to the heat storage device 70. If the component 30 to be heated is not present in the first compartment 10, and the heat storage device 70 is full (i.e., the temperature of the heat storage material in the heat storage device 70 is higher than or equal to the overheating temperature of the heating component 40), hot air can be discharged into the atmosphere through the third air valve 90. This reduces the possibility of the heating component 40 being damaged or shutting down due to overheating, thereby improving the stability and reliability of the wind turbine generator set 1.

[0053] In some embodiments, the heat storage device 70 is a solid bed; the solid bed contains a solid heat storage material. For example, the solid heat storage material includes one or more of gravel, pebbles, ceramic balls, refractory bricks, concrete, and magnesia bricks.

[0054] It should be noted that a solid bed is a device that uses hot air to raise the temperature of a solid thermal storage material in order to store thermal energy. Solid bed technology is mature, inexpensive, and can efficiently utilize medium- and low-temperature hot air (e.g., hot air between 20°C and 60°C).

[0055] It is understandable that when the temperature of the solid heat storage material is lower than the overheating temperature of the heating element 40, the heat storage device 70 is not full; when the temperature of the solid heat storage material is higher than or equal to the overheating temperature of the heating element 40, the heat storage device 70 is full.

[0056] Please see Figure 3 , Figure 3 A flowchart illustrating a thermal control method for a wind turbine generator set provided in some embodiments of this application. The thermal control method for the wind turbine generator set 1 includes steps S1 to S9.

[0057] In step S1, it is determined whether the heating element 40 is overheating; if yes, step S2 is executed; if no, step S5 is executed.

[0058] It is understandable that when the heating component 40 overheats, the temperature inside the second compartment 20 becomes too high. In this case, to prevent the heating component 40 from being damaged or shut down due to high temperature, it is necessary to exhaust the hot air to reduce the temperature of the heating component 40.

[0059] In some embodiments, the over-temperature is greater than or equal to 40°C and less than or equal to 55°C. For example, the over-temperature is 40°C, 45°C, 50°C, or 55°C.

[0060] In step S2, it is determined whether the component to be heated 30 has reached the working temperature. If yes, step S3 is executed; otherwise, step S8 is executed.

[0061] In some embodiments, the operating temperature of the component to be heated 30 is greater than or equal to 10°C and less than or equal to 40°C. For example, the operating temperature of the component to be heated 30 is 10°C, 20°C, 30°C or 40°C.

[0062] In step S3, it is determined whether the thermal storage device is full. If yes, step S4 is executed; otherwise, step S9 is executed.

[0063] In step S4, the third air valve 90 is opened to exhaust heat to the outside.

[0064] For example, when the heating element 40 overheats, the element to be heated 30 has reached its operating temperature, and the heat storage device 70 is full, the third air valve 90 can be opened to release the hot air in the second compartment 20 into the atmosphere.

[0065] In step S5, it is determined whether the component to be heated 30 has reached the working temperature. If yes, step S6 is executed; otherwise, step S7 is executed.

[0066] It should be noted that some embodiments of this application do not restrict the execution order of steps S1 and S2, or steps S1 and S5. In some embodiments, the execution order of steps S1 and S2 can be interchanged, and in other embodiments, the execution order of steps S1 and S5 can also be interchanged.

[0067] In step S6, the wind turbine generator set 1 continues to operate.

[0068] For example, when the heating component 40 is not overheated, but the component to be heated 30 has reached the operating temperature, the wind turbine generator set 1 does not need to perform any operation. In this case, the wind turbine generator set 1 can maintain normal operation.

[0069] In step S7, the second compartment 20 and the heat storage device 70 together supply heat to the first compartment 10.

[0070] For example, when the heating element 40 is not overheated and the element to be heated 30 has not reached its operating temperature, the second compartment 20 and the heat storage device 70 can simultaneously supply heat to the first compartment 10. It is understood that because the heating element 40 is not overheated, the air temperature inside the second compartment 20 is relatively low (e.g., below the overheating temperature). In this case, the heat storage device 70 can simultaneously supply heat to the first compartment 10 to improve the heating efficiency of the element to be heated 30.

[0071] In step S8, the first air valve 60 is opened, and the second compartment 20 supplies heat to the first compartment 10.

[0072] For example, when the heating element 40 overheats and the element to be heated 30 has not reached its operating temperature, the first air valve 60 can be opened to allow the second compartment 20 to supply heat to the first compartment 10.

[0073] In step S9, the second compartment 20 supplies heat to the thermal storage device 70.

[0074] For example, when the heating element 40 overheats, the element to be heated 30 has reached its operating temperature, and the heat storage device 70 is not full, the second compartment 20 supplies heat to the heat storage device 70.

[0075] It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0076] It is understood that the various implementation methods described in this application can be implemented individually or in combination, and the embodiments of this application are not limited in this respect.

[0077] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the aforementioned method implementations, and will not be repeated here.

[0078] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wind turbine generator set, characterized in that, include: First compartment; Second compartment; The component to be heated is disposed in the first compartment; A heating element, wherein the heating element is disposed within the second compartment; A connecting passageway connecting the first compartment and the second compartment; A first air valve, configured to supply air from the second compartment to the first compartment; A heat storage device, which is connected to the first compartment and the second compartment; the heat storage device is used to: store heat from the second compartment and supply heat to the first compartment.

2. The wind turbine generator set according to claim 1, characterized in that, The components to be heated include a gearbox and / or an electrical cabinet.

3. The wind turbine generator set according to claim 1, characterized in that, The connecting passage has multiple air outlets; each air outlet is connected to the first compartment; There are multiple components to be heated, and each of the multiple components to be heated corresponds to one of the multiple air outlets, with each air outlet facing the corresponding component to be heated.

4. The wind turbine generator set according to claim 3, characterized in that, The wind turbine generator set further includes: a plurality of second air valves, each of which corresponds to a plurality of air outlets, and each second air valve is located at the corresponding air outlet.

5. The wind turbine generator set according to claim 1, characterized in that, The connecting passage has an air inlet; the air inlet is connected to the second compartment; the first air valve is located at the air inlet.

6. The wind turbine generator set according to claim 1, characterized in that, The wind turbine generator set also includes a third air valve; The second compartment has an exhaust port, and the third air valve is located at the exhaust port.

7. The wind turbine generator set according to claim 1, characterized in that, The heating component includes a transformer.

8. The wind turbine generator set according to claim 1, characterized in that, The heat storage device is a solid bed; the solid bed contains solid heat storage material.

9. The wind turbine generator set according to claim 1, characterized in that, The heat storage device is located in the first compartment; or... The heat storage device is located in the second compartment; or... The thermal storage device is located outside the first compartment and outside the second compartment.

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