Wind power generation device for blade deicing

Abstract

The invention provides a wind power generation device for blade deicing. The wind power generation device for blade deicing comprises a tower drum, a wind power generation device and a wind power generation device, the machine body is arranged on the tower drum; the power generation assembly comprises a power generation unit and a plurality of blades, the power generation unit is arranged in the machine body, and the blades are rotatably arranged on the machine body; the heating assembly comprises a battery and a heating piece, the battery is arranged in the machine body, the heating piece is arranged on the blades, and the battery is electrically connected with the heating piece; the protection assembly comprises a conductive part, a detection part and a control part, the conductive part is arranged on the blade, one end of the conductive part is connected with the heating part, the other end of the conductive part is grounded, the detection part is arranged on the conductive part, the control part is arranged in the machine body, and the detection part is in signal connection with the control part. Through the technical scheme provided by the invention, the problems that the electric heating deicing system is damaged and the blade is on fire due to the fact that the electromagnetic property of the blade is changed when an electric heating film is laid in the related technology and the lightning stroke risk is increased can be solved.

Description

[0001] This application claims priority to one of the following patent applications:

[0002] 1. The priority right of the patent application submitted to the State Intellectual Property Office of China on November 20, 2024, with application number 202411666227.X and invention name “Wind power generation device for blade deicing”. Technical Field

[0003] The present invention relates to the technical field of deicing of generator blades, and in particular to a wind power generation device for deicing blades. Background Art

[0004] Anti-icing technology has attracted attention in many fields. As wind turbines are exposed to the natural environment for a long time, they are greatly affected by the environment and climate. Blade icing is the most important factor affecting the safety and power generation of the unit. Blade icing will cause the blade airfoil to change, affecting the output of the unit. In severe cases, it will cause the unit to shut down and produce a large power curve deviation, resulting in power loss, and will affect the balance of the impeller, resulting in uneven load on the blades and transmission components, affecting the service life and operation safety of the unit. Therefore, it is necessary to remove the ice attached to the blades.

[0005] In the related art, an electric heating deicing system is added to the blade. Specifically, a point heating film is laid on the outer surface of the blade. By energizing the electric heating film, the temperature of the electric heating film is increased to heat and remove the ice attached to the blade. However, laying the electric heating film in the related art will change the electromagnetic characteristics of the blade and increase the risk of lightning strike, which will damage the electric heating deicing system and cause the blade to catch fire. Summary of the invention

[0006] The present invention provides a wind power generation device for blade deicing to solve the problem in the related art that laying an electric heating film will change the electromagnetic properties of the blades and increase the risk of lightning strikes, thereby causing damage to the electric thermal deicing system and causing blade fire.

[0007] The present invention provides a wind power generation device for deicing blades, the wind power generation device for deicing blades comprises: a tower, arranged vertically; a machine body, arranged at the upper end of the tower; a power generation component, comprising a power generation unit and a plurality of blades, the power generation unit is arranged in the machine body, the plurality of blades are connected to the power generation unit, and the plurality of blades can be rotatably arranged on the machine body to control the power generation unit to realize wind power generation; a heating component, comprising a battery and a heating element, the battery is arranged in the machine body, the heating element is arranged on the outer surface of the blade, the battery is electrically connected to the heating element to control the working state of the heating element; a protection component, comprising a conductive element, a detection element and a control element, the conductive element is arranged on the blade, one end of the conductive element is connected to the heating element, and the other end of the conductive element is grounded, the detection element is arranged on the conductive element to detect the current on the conductive element, the control element is arranged in the machine body, the detection element is connected to the control element signal, and the control element controls the blade to run or stop according to the current signal detected by the detection element.

[0008] Furthermore, the detection component includes a detection host and a detection probe, the detection probe is sleeved on the conductive component, and the detection probe is connected to the outer wall of the blade, the detection probe is signal-connected to the detection host, and the detection host is signal-connected to the control component.

[0009] Furthermore, the conductive part includes a guide bar, which is arranged at the trailing edge of the blade, the first end of the guide bar extends toward the first end of the blade, the second end of the guide bar extends toward the second end of the blade, the first end of the blade extends in a direction away from the body, the second end of the blade is connected to the power generation unit, and the detection probe is mounted on the second end of the guide bar.

[0010] Furthermore, the guide strip includes a first guide segment and multiple second guide segments, the extension direction of the first guide segment is the same as the length extension direction of the blade, the first ends of the multiple second guide segments are all connected to the first guide segment, the multiple second guide segments are spaced apart along the length direction of the first guide segment, the second ends of the multiple second guide segments all extend toward the leading edge position of the blade, and the detection probe is mounted on the second end of the first guide segment.

[0011] Furthermore, the wind power generation device for blade deicing also includes a grounding wire, a first end of the grounding wire is connected to the first end of the blade, and a second end of the grounding wire is passed through the body and connected to the tower.

[0012] Furthermore, the blade includes a blade body and a conductive segment, the conductive segment is arranged on the first end of the blade body, the second end of the blade body is connected to the power generation unit, the first end of the grounding wire is connected to the conductive segment, and the first end of the first guide segment is connected to the conductive segment.

[0013] Furthermore, the detection probe is a Rogowski coil.

[0014] Furthermore, the Rogowski coil is bonded to the outer side wall of the blade.

[0015] Further, the heating element comprises an electric heating film.

[0016] Furthermore, the electric heating film includes an electric heating layer, an insulating layer and a power supply electrode. The insulating layer is arranged on the outer surface of the blade, the electric heating layer is arranged on the insulating layer, and the power supply electrode is electrically connected to the electric heating layer and the battery respectively to energize the electric heating layer.

[0017] According to the technical solution of the present invention, a wind power generation device for blade deicing includes a tower, a machine body, a power generation assembly, a heating assembly, and a protective assembly. The tower is arranged vertically, the machine body is arranged at the upper end of the tower, the power generation unit of the power generation assembly is arranged in the machine body, and multiple blades are connected to the power generation unit, and multiple blades are rotatably arranged on the machine body, so that the rotation of the blades can control the power generation unit to generate wind power, and then the wind energy can be converted into electrical energy through the multiple blades and the power generation unit. When the multiple blades rotate on the machine body, they will be affected by the low temperature, and then ice will adhere to the blades. The heating element of the heating assembly is arranged on the outer surface of the blade, and the battery can be electrically connected to the heating element, so that the heating element can be controlled to work, so that the temperature of the heating element rises and the ice attached to the blade can be removed. Since batteries and heating elements are arranged on the blades, the heating elements will change the electromagnetic properties of the blades when working, increasing the risk of lightning strikes. In order to avoid damage to the heating components and blades, a conductive element is arranged on the blades, one end of the conductive element is connected to the heating element, and the other end of the conductive element is grounded. In this way, the current or induced current on the heating element and the blades can be grounded through the conductive element, thus avoiding damage to the blades and the heating element. In order to facilitate the detection of the current size on the heating element and the conductive element, a detection element is arranged on the conductive element, and the detection element can detect the current on the conductive element. In this way, the circuit signal detected by the detection element can be transmitted to the control element, and the control element can control the blade to run or stop according to the current signal detected by the detection element. Specifically, if the detection component detects the presence of current on the conductive component, the current signal of the detection component is transmitted to the control component, and the control component controls the blades to stop. If the detection component detects that there is no current or induced current on the conductive component, the blades are controlled to operate. In a thunderstorm environment, if the detection component does not detect the current signal of the conductive component, the conductive component may be damaged, resulting in the inability to ground the current on the heating component through the conductive component. As a result, the detection component and the control component can also detect the working condition of the conductive component, thereby improving the structural reliability of the wind power generation device used for blade de-icing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a blade provided according to an embodiment of the present invention is shown;

[0020] Figure 2 A schematic structural diagram of a wind power generation device for blade deicing provided according to an embodiment of the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Power generation components; 11. Blades;

[0023] 20. Protection component; 21. Conductive member; 211. Guide strip; 2111. First guide section; 2112. Second guide section; 22. Detection member; 221. Detection host; 222. Detection probe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a wind power generation device for blade deicing, the wind power generation device for blade deicing includes a tower, a machine body, a power generation component 10, a heating component and a protection component 20, the tower is arranged vertically, the machine body is arranged at the upper end of the tower, the power generation component 10 includes a power generation unit and a plurality of blades 11, the power generation unit is arranged in the machine body, the plurality of blades 11 are connected to the power generation unit, and the plurality of blades 11 are rotatably arranged on the machine body to control the power generation unit to realize wind power generation, the heating component includes a battery and a heating element, the battery is arranged in the machine body The heating element is arranged on the outer surface of the blade 11, the battery is electrically connected to the heating element to control the working state of the heating element, the protection component 20 includes a conductive element 21, a detection element 22 and a control element, the conductive element 21 is arranged on the blade 11, one end of the conductive element 21 is connected to the heating element, and the other end of the conductive element 21 is grounded, the detection element 22 is arranged on the conductive element 21 to detect the current on the conductive element 21, the control element is arranged in the body, the detection element 22 is connected to the control element signal, and the control element controls the blade 11 to run or stop according to the current signal detected by the detection element 22.

[0026] The wind power generation device for blade deicing provided by the present embodiment is applied. The wind power generation device for blade deicing includes a tower, a machine body, a power generation assembly 10, a heating assembly and a protection assembly 20. The tower is arranged vertically, the machine body is arranged at the upper end of the tower, the power generation unit of the power generation assembly 10 is arranged in the machine body, and the plurality of blades 11 are connected to the power generation unit, and the plurality of blades 11 are rotatably arranged on the machine body, so that the rotation of the blades 11 can control the power generation unit to generate wind power, and thus the wind energy can be converted into electrical energy through the plurality of blades 11 and the power generation unit. When the plurality of blades 11 rotate on the machine body, they will be affected by the low temperature, and then ice will adhere to the blades 11. The heating element of the heating assembly is arranged on the outer surface of the blade 11, and the battery can be electrically connected to the heating element, so that the heating element can be controlled to work, so that the temperature of the heating element rises and the ice attached to the blade 11 can be removed. Since a battery and a heater are arranged on the blade 11, the heater will change the electromagnetic characteristics of the blade 11 when working, increasing the risk of lightning strike. In order to avoid damage to the heating component and the blade 11, a conductive member 21 is arranged on the blade 11, one end of the conductive member 21 is connected to the heater, and the other end of the conductive member 21 is grounded. In this way, the current or induced current on the heater and the blade 11 can be grounded through the conductive member 21, thus avoiding damage to the blade 11 and the heater. In order to facilitate the detection of the current size on the heater and the conductive member 21, a detection member 22 is arranged on the conductive member 21. The detection member 22 can detect the current on the conductive member 21, so that the circuit signal detected by the detection member 22 can be transmitted to the control member, and the control member can control the blade 11 to run or stop according to the current signal detected by the detection member 22. Specifically, if the detection component 22 detects that there is current on the conductive component 21, the current signal of the detection component 22 is transmitted to the control component, and the control component controls the blade 11 to stop. If the detection component 22 detects that there is no current or induced current on the conductive component 21, the blade 11 is controlled to operate. In a thunderstorm environment, the detection component 22 does not detect the current signal of the conductive component 21, and the conductive component 21 may be damaged, resulting in the inability to ground the current on the heating component through the conductive component 21. As a result, the detection component 22 and the control component can also detect the working condition of the conductive component 21, thereby improving the structural reliability of the wind power generation device used for blade deicing.

[0027] like Figure 2As shown, the detection member 22 includes a detection host 221 and a detection probe 222, the detection probe 222 is sleeved on the conductive member 21, and the detection probe 222 is connected to the outer wall of the blade 11, the detection probe 222 is connected to the detection host 221 by signal, and the detection host 221 is connected to the control member by signal. With the above structure, by setting the detection host 221 in the body, the detection probe 222 is sleeved on the conductive member 21, and the detection probe 222 is connected to the outer wall of the blade 11, it is convenient to fix the detection probe 222 on the blade 11, the detection probe 222 is connected to the detection host 221 by signal, and then the detection probe 222 can detect the current on the conductive member 21, and because the detection host 221 is connected to the control member by signal, the control member can control the blade 11 to run or stop according to the current signal on the detection host 221.

[0028] like Figure 1 As shown, the conductive member 21 includes a guide bar 211, which is arranged at the trailing edge of the blade 11, the first end of the guide bar 211 extends in the direction of the first end of the blade 11, the second end of the guide bar 211 extends in the direction of the second end of the blade 11, the first end of the blade 11 extends in the direction away from the body, the second end of the blade 11 is connected to the power generation unit, and the detection probe 222 is sleeved on the second end of the guide bar 211. With the above structure, the guide bar 211 is arranged at the trailing edge of the blade 11, and the first end of the guide bar 211 extends in the direction of the first end of the blade 11, and the second end of the guide bar 211 extends in the direction of the second end of the blade 11, so that the contact area between the guide bar 211 and the blade 11 can be increased, so that the resistance of the guide bar 211 can be reduced, so that the blade 11 can be grounded. And the detection probe 222 is sleeved on the second end of the guide bar 211, which can improve the detection effect of the detection probe 222 and ensure that whether the guide bar 211 is damaged can be detected.

[0029] like Figure 1As shown, the guide strip 211 includes a first guide segment 2111 and a plurality of second guide segments 2112. The extension direction of the first guide segment 2111 is the same as the length extension direction of the blade 11. The first ends of the plurality of second guide segments 2112 are all connected to the first guide segment 2111. The plurality of second guide segments 2112 are spaced apart along the length direction of the first guide segment 2111. The second ends of the plurality of second guide segments 2112 all extend toward the direction of the leading edge position of the blade 11. The detection probe 222 is sleeved on the second end of the first guide segment 2111. By adopting the above structure, the extension direction of the first guide segment 2111 is the same as the length extension direction of the blade 11, the first ends of the multiple second guide segments 2112 are connected to the first guide segment 2111, and the multiple second guide segments 2112 are arranged at intervals along the length direction of the first guide segment 2111, and the second ends of the multiple second guide segments 2112 extend toward the leading edge position of the blade 11. In this way, the first guide segment 2111 and the multiple second guide segments 2112 can be used to increase the contact area between the guide bar 211 and the heating element, and the resistance of the guide bar 211 can be reduced to ensure that the induced current on the heating element is grounded through the guide bar 211, thereby avoiding damage to the heating element.

[0030] In this embodiment, the wind power generation device for blade deicing further includes a grounding wire, a first end of which is connected to a first end of the blade 11, and a second end of which is passed through the machine body and connected to the tower. With the above structure, the first end of the grounding wire is connected to the first end of the blade 11, and the second end of the grounding wire is passed through the machine body and connected to the tower, so that the blade 11 can be grounded easily, thereby protecting the blade 11.

[0031] In this embodiment, the blade 11 includes a blade body and a conductive segment, the conductive segment is arranged on the first end of the blade body, the second end of the blade body is connected to the power generation unit, the first end of the grounding wire is connected to the conductive segment, and the first end of the first guide segment 2111 is connected to the conductive segment. With the above structure, the conductive segment is arranged on the first end of the blade body, and the second end of the blade body is connected to the power generation unit, so that the blade body can be grounded through the conductive segment while the blade body is rotating, so that the structural reliability of the blade 11 can be ensured.

[0032] In this embodiment, the detection probe 222 is a Rogowski coil. By setting the Rogowski coil to be sleeved on the conductive member 21, it is convenient to detect the current on the conductive member 21, thereby ensuring the accuracy of the detection structure.

[0033] In this embodiment, the Rogowski coil is bonded to the outer wall of the blade 11. With the above structure, the Rogowski coil is bonded to the outer wall of the blade 11, so that the Rogowski coil is easily connected and fixed to the blade 11, and the Rogowski coil can be easily removed from the blade 11.

[0034] In this embodiment, the heating element includes an electric heating film. The electric heating film can be used to remove ice attached to the blade 11.

[0035] In this embodiment, the electric heating film includes an electric heating layer, an insulating layer and a power supply electrode. The insulating layer is arranged on the outer surface of the blade 11, the electric heating layer is arranged on the insulating layer, and the power supply electrode is electrically connected to the electric heating layer and the battery respectively to energize the electric heating layer. With the above structure, the electric heating layer can be insulated from the blade by the insulating layer arranged on the outer surface of the blade 11. The electric heating layer is arranged on the insulating layer, and the power supply electrode is electrically connected to the electric heating layer and the battery respectively. In this way, the battery can be used to power the electric heating layer, ensuring that the electric heating layer can remove the ice attached to the blade 11.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind power generation device for blade deicing, characterized in that: The wind power generation device for blade deicing comprises: The tower is arranged vertically; A machine body, arranged at the upper end of the tower; A power generation assembly (10) comprises a power generation unit and a plurality of blades (11), wherein the power generation unit is arranged in the machine body, the plurality of blades (11) are connected to the power generation unit, and the plurality of blades (11) are rotatably arranged on the machine body to control the power generation unit to realize wind power generation; A heating component, comprising a battery and a heating element, wherein the battery is arranged in the body, the heating element is arranged on the outer surface of the blade (11), and the battery is electrically connected to the heating element to control the working state of the heating element; A protection component (20) comprises a conductive member (21), a detection member (22) and a control member, wherein the conductive member (21) is arranged on the blade (11), one end of the conductive member (21) is connected to the heating member, and the other end of the conductive member (21) is grounded, the detection member (22) is arranged on the conductive member (21) to detect the current on the conductive member (21), the control member is arranged in the body, the detection member (22) is connected to the control member by signal, and the control member controls the blade (11) to run or stop according to the current signal detected by the detection member (22).

2. The wind power generation device for blade deicing according to claim 1, characterized in that: The detection component (22) comprises a detection host (221) and a detection probe (222); the detection probe (222) is sleeved on the conductive component (21), and the detection probe (222) is connected to the outer wall of the blade (11); the detection probe (222) is signal-connected to the detection host (221), and the detection host (221) is signal-connected to the control component.

3. The wind power generation device for blade deicing according to claim 2, characterized in that: The conductive member (21) comprises a guide bar (211), the guide bar (211) being arranged at the trailing edge of the blade (11), the first end of the guide bar (211) extending in the direction of the first end of the blade (11), the second end of the guide bar (211) extending in the direction of the second end of the blade (11), the first end of the blade (11) extending in the direction away from the machine body, the second end of the blade (11) being connected to the power generation unit, and the detection probe (222) being sleeved on the second end of the guide bar (211).

4. The wind power generation device for blade deicing according to claim 3, characterized in that: The guide strip (211) comprises a first guide segment (2111) and a plurality of second guide segments (2112); the extension direction of the first guide segment (2111) is the same as the length extension direction of the blade (11); the first ends of the plurality of second guide segments (2112) are all connected to the first guide segment (2111); the plurality of second guide segments (2112) are arranged at intervals along the length direction of the first guide segment (2111); the second ends of the plurality of second guide segments (2112) extend towards the direction of the leading edge position of the blade (11); and the detection probe (222) is sleeved on the second end of the first guide segment (2111).

5. The wind power generation device for blade deicing according to claim 4, characterized in that: The wind power generation device for blade deicing also includes a grounding wire, a first end of which is connected to a first end of the blade (11), and a second end of which is passed through the machine body and connected to the tower.

6. The wind power generation device for blade deicing according to claim 5, characterized in that: The blade (11) comprises a blade body and a conductive segment, wherein the conductive segment is arranged on the first end of the blade body, the second end of the blade body is connected to the power generation unit, the first end of the grounding wire is connected to the conductive segment, and the first end of the first guide segment (2111) is connected to the conductive segment.

7. The wind power generation device for blade deicing according to claim 2, characterized in that: The detection probe (222) is a Rogowski coil.

8. The wind power generation device for blade deicing according to claim 7, characterized in that: The Rogowski coil is bonded to the outer side wall of the blade (11).

9. The wind power generation device for blade deicing according to claim 1, characterized in that: The heating element comprises an electric heating film.

10. The wind power generation device for blade deicing according to claim 9, characterized in that: The electric heating film comprises an electric heating layer, an insulating layer and a power supply electrode, wherein the insulating layer is arranged on the outer surface of the blade (11), the electric heating layer is arranged on the insulating layer, and the power supply electrode is electrically connected to the electric heating layer and the battery respectively to supply power to the electric heating layer.

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