Heating and deicing wind shield and heating and deicing system of wind power blade

Abstract

The utility model discloses a heating and deicing wind shield and a heating and deicing system for a wind power blade, and relates to the technical field of wind power generation, the heating and deicing wind shield is characterized in that a wind shield main plate is arranged at the front edge, close to the maximum chord length, in the wind power blade, the wind shield main plate comprises an arc-shaped edge and a linear edge, and the arc-shaped edge is connected with the windward side inner wall and the leeward side inner wall of the wind power blade; the straight edge is connected with the side face of a web in the wind power blade, a ventilation opening and a channel opening are formed in the wind blocking main plate, the channel opening is covered with the wind blocking cover plate, the ventilation opening is used for allowing a ventilation pipe to pass through, and an observation window is arranged on the wind blocking cover plate. The wind blocking main plate is arranged in the wind power blade and close to the front edge with the maximum chord length, so that hot air is concentrated in the front edge area of the blade tip, and the heating and deicing effects can be guaranteed; the wind shielding cover plate covers a channel opening in the wind shielding main plate, the heating and deicing effects are guaranteed, meanwhile, an operator can conveniently inspect, maintain and repair the blade, and an observation window in the wind shielding cover plate is convenient for the worker to check the condition in the front edge area of the blade tip.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a heating and deicing windshield for wind turbine blades and a heating and deicing system. Background Art

[0002] During wind turbine operation, ice may form on the blade surfaces, affecting their structural performance and safe operation. To address this issue, various blade heating and de-icing methods and devices have been proposed, with thermal airflow heating being the most common. To ensure effective de-icing, windshields are installed near the maximum chord length of the blades.

[0003] The existing gas-heated deicing windshield is a whole flat plate that blocks the entire blade leading edge tip area. When operators need to inspect, maintain, or repair the blades, they cannot enter the blade tip area, which will affect the normal inspection, maintenance, and repair work of the blades.

[0004] Therefore, how to ensure the heating and deicing effect while facilitating operators to perform blade inspection, maintenance and repair work is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a heated deicing windshield and a heated deicing system for wind turbine blades, which are used to solve the problem that the existing gas-heated deicing windshield is a whole flat plate, which closes the entire leading edge and tip area of ​​the blade, affecting the normal inspection, maintenance and repair of the blade.

[0006] To solve the above technical problems, the present application provides a heating and deicing windshield for a wind turbine blade. The wind turbine blade is provided with a web, which extends along the length of the wind turbine blade. The two side edges of the web are respectively connected to the windward inner wall and the leeward inner wall of the wind turbine blade. The heating and deicing windshield includes: a windshield main plate, a windshield cover plate, and an observation window.

[0007] The windshield main board is arranged at the leading edge of the wind turbine blade near the maximum chord length. The windshield main board includes an arcuate edge and a straight edge. The arcuate edge is connected to the inner wall of the windward side and the inner wall of the leeward side of the wind turbine blade, and the straight edge is connected to the side surface of the web in the wind turbine blade. The windshield main board is provided with a ventilation opening and a passage opening. The windshield cover is provided on the passage opening. The ventilation opening is used for the ventilation pipe to pass through. The windshield cover is provided with the observation window.

[0008] In a feasible embodiment, the windshield main board is formed by splicing together multiple boards.

[0009] In a feasible embodiment, the windshield main board includes a first side panel, a second side panel and a center panel, the first straight edge of the first side panel and the first straight edge of the second side panel are respectively connected to the first straight edge and the second straight edge of the center panel, the second straight edge of the first side panel, the second straight edge of the second side panel and the third straight edge of the center panel constitute the straight edge, the arcuate edge of the first side panel, the arcuate edge of the second side panel and the arcuate edge of the center panel constitute the arcuate edge, and the vent and the passage opening are arranged on the center panel.

[0010] In a feasible embodiment, the first straight edge and the second straight edge of the center panel are respectively bonded to the first straight edge of the first side panel and the first straight edge of the second side panel.

[0011] In a feasible embodiment, one side of the windshield cover is hinged to the windshield main board, and a connecting piece is provided on the other side of the windshield cover. A mating piece that cooperates with the connecting piece is provided on the windshield main board, and the connecting piece and the mating piece are used to connect when the windshield cover covers the channel opening.

[0012] In a feasible embodiment, one side of the windshield cover is hinged to the windshield main plate via a hinge, the observation window is mounted on the windshield cover via bolts and nuts, and a handle is provided on the windshield cover.

[0013] In a feasible embodiment, a sealing strip is provided on the edge of the passage opening on the windshield main plate or on the edge of the windshield cover plate that abuts against the windshield main plate.

[0014] In a feasible embodiment, the connecting member is a cam lock, and the matching member is provided with a lock hole matching with the lock tongue of the cam lock.

[0015] In a feasible embodiment, the hinge, the bolt, the nut and the cam lock are all made of non-metallic materials.

[0016] The present application also provides a heating and deicing system for wind turbine blades, comprising a ventilation duct, a heater, a blower and the heating and deicing windshield arranged in the wind turbine blades, the blower being arranged near the root of the wind turbine blades, the heater being arranged at the outlet of the blower, one end of the ventilation duct being connected to the outlet of the blower, and the other end of the ventilation duct being connected to the vent on the heating and deicing windshield.

[0017] The present application provides a heating and deicing windshield for a wind turbine blade, wherein a web is provided inside the wind turbine blade, the web extends along the length direction of the wind turbine blade, and the two side edges of the web are respectively connected to the windward inner wall and the leeward inner wall of the wind turbine blade, and the heating and deicing windshield comprises: a windshield main board, a windshield cover and an observation window; the windshield main board is provided at the leading edge of the wind turbine blade near the maximum chord length, the windshield main board comprises an arcuate edge and a straight edge, the arcuate edge is connected to the windward inner wall and the leeward inner wall of the wind turbine blade, and the straight edge is connected to the side of the web inside the wind turbine blade, a vent and a passage opening are provided on the windshield main board, the windshield cover is provided on the passage opening, the vent is used for the ventilation pipe to pass through, and an observation window is provided on the windshield cover. The windshield main board is set at the leading edge of the wind turbine blade close to the maximum chord length, so that the hot air is concentrated in the leading edge area of ​​the blade tip, which can ensure the heating and deicing effect; the windshield cover is set at the channel opening on the windshield main board, which ensures the heating and deicing effect while making it convenient for operators to carry out blade inspection, maintenance and repair work. The observation window on the windshield cover makes it convenient for staff to check the situation in the leading edge area of ​​the blade tip.

[0018] The present application provides a heating and deicing system for wind turbine blades, including the above-mentioned heating and deicing windshield, and the effects are as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A cross-sectional view of a heating and deicing system for wind turbine blades provided in an embodiment of the present application;

[0021] Figure 2 A structural diagram of a heating and deicing windshield for a wind turbine blade provided in an embodiment of the present application;

[0022] Figure 3 A cross-sectional view of a heated deicing windshield for a wind turbine blade provided in an embodiment of the present application;

[0023] Figure 4 A structural diagram of another wind turbine blade heating and deicing windshield provided in an embodiment of the present application;

[0024] The figures are marked as follows: 1-heating and de-icing windshield, 2-blower, 3-heater, 4-ventilation duct, 5-blade root, 6-blade tip, 7-blade tip leading edge area, 8-windshield main board, 9-windshield cover, 10-observation window, 11-ventilation port, 12-connecting part, 13-matching part, 14-hinge, 15-handle, 16-sealing strip, 17-web, 18-leading edge, 19-trailing edge, 801-center panel, 802-first side panel, 803-second side panel. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The core of this application is to provide a heating and deicing windshield and a heating and deicing system for wind turbine blades, which are used to facilitate operators to carry out blade inspection, maintenance and repair work while ensuring the heating and deicing effect.

[0027] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Figure 1 A cross-sectional view of a heating and deicing system for a wind turbine blade provided in an embodiment of the present application, as shown in FIG. Figure 1 As shown, a web 17 is provided in the wind turbine blade. The web 17 extends along the length direction of the wind turbine blade. The two side edges of the web 17 are respectively connected to the windward inner wall and the leeward inner wall of the wind turbine blade. Figure 2 This is a structural diagram of a heating and deicing windshield for a wind turbine blade provided in an embodiment of the present application. Figure 3 This is a cross-sectional view of a heating and deicing windshield for a wind turbine blade provided in an embodiment of the present application. Figure 2 and Figure 3 As shown, the heating and deicing windshield 1 of the wind turbine blade includes: a windshield main board 8, a windshield cover 9 and an observation window 10; the windshield main board 8 is arranged at the leading edge 18 of the wind turbine blade near the maximum chord length, the windshield main board 8 includes an arc edge and a straight edge, the arc edge is connected to the inner wall of the windward side and the inner wall of the leeward side of the wind turbine blade, and the straight edge is connected to the side of the web 17 in the wind turbine blade, the windshield main board 8 is provided with a vent 11 and a channel opening, the windshield cover 9 is covered on the channel opening, the vent 11 is used for the ventilation pipe 4 to pass through, and the windshield cover 9 is provided with an observation window 10.

[0029] like Figure 1As shown, the web 17 extends from the root 5 of the wind turbine blade to the tip 6 of the wind turbine blade. During the operation of the wind turbine generator set, the leading edge area 7 ( Figure 1 The red area (de-icing area) in the figure is prone to ice formation. Therefore, a heated de-icing windshield 1 is placed near the leading edge of the wind turbine blade near the maximum chord length. A ventilation duct 4 delivers hot air to the blade tip leading edge area 7 in front of the heated de-icing windshield, rather than allowing the hot air to circulate throughout the entire wind turbine blade. This concentrates the hot air in the blade tip leading edge area 7, ensuring effective heating and de-icing and saving energy. The maximum chord length of a wind turbine blade refers to the maximum value of the chord line (i.e., the blade width) from the root 5 to the tip 6 during rotation. The leading edge 18 of a wind turbine blade refers to the front edge of the wind turbine blade, or the leading edge of the blade. This area is the first area where air flows into contact with the blade and is therefore crucial to the blade's aerodynamic performance and structural integrity. The trailing edge 19 of a wind turbine blade refers to the rear edge of the wind turbine blade, opposite the leading edge 18, and is the side where air exits the blade after passing through it.

[0030] like Figure 2 As shown, the edges of the windshield main plate 8 in the embodiment of the present application are arcuate edges and straight edges. The arcuate edges match the curvature of the inner wall of the wind turbine blade and can be bonded to the inner wall of the wind turbine blade. The straight edges are connected to the side of the web 17 and can also be bonded to the web 17. Figure 2 As shown, the opening on the windshield main plate 8 matches the outer diameter of the ventilation duct 4. A windshield cover 9 covers the opening. When opened, it allows access to the blade tip leading edge region 7. An observation window 10 is provided on the windshield cover 9, allowing operators to view the blade cavity. This window 10 can be made of, but is not limited to, a high-strength, wear-resistant transparent polyvinyl chloride (PVC) sheet.

[0031] An embodiment of the present application provides a heating and deicing windshield 1 for a wind turbine blade, wherein a web 17 is provided inside the wind turbine blade, and the web 17 extends along the length direction of the wind turbine blade, and the two side edges of the web 17 are respectively connected to the windward inner wall and the leeward inner wall of the wind turbine blade, and the heating and deicing windshield 1 comprises: a windshield main board 8, a windshield cover 9 and an observation window 10; the windshield main board 8 is provided at the leading edge of the wind turbine blade near the maximum chord length, the windshield main board 8 comprises an arcuate edge and a straight edge, the arcuate edge is connected to the windward inner wall and the leeward inner wall of the wind turbine blade, and the straight edge is connected to the side of the web 17 inside the wind turbine blade, a vent 11 and a channel opening are provided on the windshield main board 8, the windshield cover 9 is provided on the channel opening, the vent 11 is used for the ventilation pipe 4 to pass through, and an observation window 10 is provided on the windshield cover 9. The windshield main board 8 is arranged at the leading edge of the wind turbine blade near the maximum chord length, so that the hot air is concentrated in the blade tip leading edge area 7, which can ensure the heating and deicing effect; the windshield cover 9 is arranged to cover the channel opening on the windshield main board 8, which ensures the heating and deicing effect while making it convenient for operators to carry out blade inspection, maintenance and repair work. The observation window 10 on the windshield cover 9 makes it convenient for staff to check the situation in the blade tip leading edge area 7.

[0032] Based on the above-mentioned embodiment, the windshield main plate 8 in this embodiment is constructed from multiple panels. This spliced ​​design facilitates installation and maintenance of the windshield main plate 8. Each panel can be removed individually for inspection, repair, or replacement without dismantling the entire structure. The windshield main plate can be made of fiberglass reinforced plastic with a core material, with a thickness of 10 mm.

[0033] Figure 4 The structural diagram of another wind turbine blade heating and deicing windshield provided in the embodiment of the present application is as follows: Figure 4 As shown, the windshield main plate 8 includes a first side plate 802, a second side plate 803, and a center plate 801. The first straight edge of the first side plate 802 and the first straight edge of the second side plate 803 are connected to the first and second straight edges of the center plate 801, respectively. The second straight edge of the first side plate 802, the second straight edge of the second side plate 803, and the third straight edge of the center plate 801 form a straight edge. The curved edges of the first side plate 802, the curved edges of the second side plate 803, and the curved edges of the center plate 801 form a curved edge. The vent 11 and the passage opening are provided on the center plate 801. During installation, the center plate 801 can be installed first, followed by the first and second side plates 802, 803. The first straight edge and the second straight edge of the center panel 801 are respectively bonded to the first straight edge of the first side panel 802 and the first straight edge of the second side panel 803, and can be connected and fixed using adhesive glue and hand-laid fiberglass. The bonding method used in the embodiment of the present application has the following advantages: compared with mechanical connection, the bonding connection method can reduce the weight of the structure; the bonding connection method makes the surface after connection flat and smooth, thereby improving the appearance quality of the product; the bonding layer has good resistance to electrochemical corrosion, electrical insulation and sealing.

[0034] Based on the above embodiment, one side of the windshield cover 9 of the embodiment of the present application is hinged to the windshield main board 8, and a connecting piece 12 is provided on the other side of the windshield cover 9. A mating piece 13 that cooperates with the connecting piece 12 is provided on the windshield main board 8. The connecting piece 12 and the mating piece 13 are used to lock the windshield cover 9 when it covers the channel opening.

[0035] In this embodiment of the present application, the windshield cover 9 can be made of fiberglass reinforced plastic (FRP) with a thickness of 10 mm. One side of the windshield cover 9 is hingedly connected to the windshield main plate 8, specifically via a shaft or hinge 14. The present embodiment of the present application does not specifically limit the connector 12 and the mating member 13; the connector 12 can be a buckle, and the corresponding mating member 13 can be a snap ring.

[0036] Based on the above embodiment, one side of the windshield cover 9 is hingedly connected to the windshield main plate 8 via a hinge 14. The observation window 10 is mounted on the windshield cover 9 via bolts and nuts, and a handle 15 is provided on the windshield cover 9. Of course, the observation window 10 can also be directly bonded to the windshield main plate 8.

[0037] The embodiment of the present application realizes the hinged connection between the windshield cover 9 and the windshield main board 8 by means of a hinge 14. The hinge 14 is fastened to the windshield main board 8 and the windshield cover 9 by means of anti-loosening bolts and nuts. The hinged hinge design is easy to install and maintain, and allows for quick disassembly and adjustment, which is very useful in applications that require frequent use or regular maintenance. The observation window 10 is installed on the windshield cover 9 by means of bolts and nuts, which has the following advantages: a significant advantage of the bolt and nut connection is its detachability. This connection method allows the components to be disassembled and assembled multiple times without destroying the connection, which facilitates maintenance and repair; the bolts and nuts allow for fine-tuning to ensure the correct alignment and proper tension of the components. A handle 15 is provided on the windshield cover 9. The handle 15 provides a component that is easy to grasp and operate, making the opening and closing of the windshield cover 9 simple and quick.

[0038] Based on the above embodiment, a sealing strip 16 is provided on the edge of the passage opening on the windshield main plate 8 or the edge of the windshield cover plate 9 that abuts the windshield main plate 8. The provision of sealing strip 16 ensures a good seal, preventing heat leakage and thus saving energy. Sealing strip 16 can be attached to the windshield cover plate 9 or windshield main plate 8 by adhesive bonding.

[0039] Based on the above embodiments, Figure 3As shown, the connecting member 12 of the embodiment of the present application is a cam lock, and the mating member 13 is provided with a lock hole that matches the lock tongue of the cam lock. Rotating the knob on the cam lock will drive the lever inside the lock, thereby achieving the extension and retraction of the lock tongue. When the knob is rotated to a specific position, the lock tongue will extend from the lock body and insert into the lock hole on the mating member 13, thereby locking the windshield cover 9. When the knob is rotated to another position, the lock tongue will retract and the windshield cover 9 can be opened. Furthermore, the hinge 14, bolts, nuts and cam lock are all made of non-metallic materials. The purpose is to prevent metal from attracting lightning and avoid lightning damage to wind turbine blades.

[0040] An embodiment of the present application also provides a heating and deicing system for wind turbine blades, comprising a ventilation duct 4, a heater 3, a blower 2 and the above-mentioned heating and deicing windshield 1 arranged in the wind turbine blade, the blower 2 is arranged near the blade root 5 of the wind turbine blade, the heater 3 is arranged at the outlet of the blower 2, one end of the ventilation duct 4 is connected to the outlet of the blower 2, and the other end of the ventilation duct 4 is connected to the vent 11 on the heating and deicing windshield 1.

[0041] A heating and deicing system for wind turbine blades provided in an embodiment of the present application includes a heating and deicing windshield 1, which includes: a windshield main board 8, a windshield cover 9 and an observation window 10; the windshield main board 8 is arranged at the leading edge of the wind turbine blade near the maximum chord length, the windshield main board 8 includes an arcuate edge and a straight edge, the arcuate edge is connected to the inner wall of the windward side and the inner wall of the leeward side of the wind turbine blade, and the straight edge is connected to the side of the web 17 in the wind turbine blade, the windshield main board 8 is provided with a vent 11 and a channel opening, the windshield cover 9 is covered on the channel opening, the vent 11 is used for the ventilation pipe 4 to pass through, and the windshield cover 9 is provided with an observation window 10. The windshield main board 8 is arranged at the leading edge of the wind turbine blade near the maximum chord length, so that the hot air is concentrated in the blade tip leading edge area 7, which can ensure the heating and deicing effect; the windshield cover 9 covers the channel opening on the windshield main board 8, which ensures the heating and deicing effect while making it convenient for operators to carry out blade inspection, maintenance and repair work. The observation window 10 on the windshield cover 9 makes it convenient for staff to check the situation in the blade tip leading edge area 7.

[0042] The above provides a detailed introduction to the heated deicing windshield and heated deicing system for wind turbine blades provided by this application. The various embodiments are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between the various embodiments can be referenced for clarity. It should be noted that those skilled in the art may make various improvements and modifications to this application without departing from the principles of this application, and such improvements and modifications fall within the scope of protection of the claims of this application.

[0043] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A heating and deicing windshield for a wind turbine blade, wherein a web (17) is provided inside the wind turbine blade, the web (17) extends along the length direction of the wind turbine blade, and the two side edges of the web (17) are respectively connected to the windward inner wall and the leeward inner wall of the wind turbine blade, characterized in that: include: Windshield main board (8), windshield cover (9) and observation window (10); The windshield main plate (8) is arranged at a leading edge (18) near the maximum chord length in the wind turbine blade. The windshield main plate (8) includes an arcuate edge and a straight edge. The arcuate edge is connected to the inner wall of the windward side and the inner wall of the leeward side of the wind turbine blade. The straight edge is connected to the side of the web (17) in the wind turbine blade. The windshield main plate (8) is provided with a vent (11) and a channel opening. The windshield cover (9) is provided on the channel opening. The vent (11) is used for the ventilation pipe (4) to pass through. The windshield cover (9) is provided with the observation window (10).

2. The heating and deicing windshield for wind turbine blades according to claim 1, characterized in that: The windshield main board (8) is formed by splicing together a plurality of plates.

3. The heating and deicing windshield for wind turbine blades according to claim 2, characterized in that: The windshield main plate (8) comprises a first side plate (802), a second side plate (803) and a center plate (801); the first straight edge of the first side plate (802) and the first straight edge of the second side plate (803) are respectively connected to the first straight edge and the second straight edge of the center plate (801); the second straight edge of the first side plate (802), the second straight edge of the second side plate (803) and the third straight edge of the center plate (801) constitute the straight edge; the arcuate edge of the first side plate (802), the arcuate edge of the second side plate (803) and the arcuate edge of the center plate (801) constitute the arcuate edge; the vent (11) and the passage opening are arranged on the center plate (801).

4. The heating and deicing windshield for wind turbine blades according to claim 3, characterized in that: The first straight edge and the second straight edge of the center panel (801) are respectively bonded to the first straight edge of the first side panel (802) and the first straight edge of the second side panel (803).

5. The heating and deicing windshield for wind turbine blades according to claim 1, characterized in that: One side of the windshield cover (9) is hinged to the windshield main board (8), and the other side of the windshield cover (9) is provided with a connecting piece (12). The windshield main board (8) is provided with a matching piece (13) that matches the connecting piece (12). The connecting piece (12) and the matching piece (13) are used to be connected when the windshield cover (9) covers the channel opening.

6. The heating and deicing windshield for wind turbine blades according to claim 5, characterized in that: One side of the windshield cover (9) is hinged to the windshield main plate (8) via a hinge (14); the observation window (10) is mounted on the windshield cover (9) via bolts and nuts; and a handle (15) is provided on the windshield cover (9).

7. The heating and deicing windshield for wind turbine blades according to claim 5, characterized in that: A sealing strip (16) is provided on the edge of the passage opening on the windshield main plate (8) or the edge of the windshield cover plate (9) abutting against the windshield main plate (8).

8. The heating and deicing windshield for wind turbine blades according to claim 6, characterized in that: The connecting piece (12) is a tongue lock, and the matching piece (13) is provided with a lock hole that matches the lock tongue of the tongue lock.

9. The heating and deicing windshield for wind turbine blades according to claim 8, characterized in that: The hinge (14), the bolt, the nut and the cam lock are all made of non-metallic materials.

10. A heating and deicing system for wind turbine blades, characterized in that: The invention comprises a ventilation pipe (4) arranged in a wind turbine blade, a heater (3), a blower (2) and a heating and deicing windshield (1) according to any one of claims 1 to 9, wherein the blower (2) is arranged close to the blade root (5) of the wind turbine blade, the heater (3) is arranged at the outlet of the blower (2), one end of the ventilation pipe (4) is connected to the outlet of the blower (2), and the other end of the ventilation pipe (4) is connected to the ventilation port (11) on the heating and deicing windshield (1).

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