Circulating hot air deicing device for blade

Abstract

The utility model discloses a circulating hot air deicing device for a blade, which relates to the technical field of wind power blade deicing devices and comprises a blade, fixing plates are fixedly connected to the front ends of the inner walls of the left side and the right side of the blade respectively, a transverse moving unit is arranged between the two fixing plates, and backflow pipes are arranged at the upper ends and the lower ends of the two fixing plates respectively. The front ends of the bottoms of the blades are fixedly connected with first bottom plates, the rear ends of the bottoms of the blades are fixedly connected with second bottom plates, the left sides and the right sides of the first bottom plates and the second bottom plates are fixedly connected with guide rods, the upper ends of the two guide rods are slidably connected with movable frames, and driving units are arranged at the bottoms of the movable frames. The driving unit is arranged, the connecting block is used for driving the movable frame to move along the guide rod, ice covering the surfaces of the blades is scraped through the scraper, the good blade deicing effect is achieved, the weight of the blades is reduced, large-amplitude vibration of the blades is avoided, and the normal rotating speed of the blades of the wind driven generator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade deicing devices, in particular to a circulating hot air deicing device for blades. Background Art

[0002] When a wind turbine is working, due to rain or water vapor adhering to the surface of the blades, ice often appears on the surface of the blades in a cold environment, resulting in uneven blade mass. While reducing the rotation speed, it will also cause the blades to vibrate significantly, seriously affecting the normal operation of the machine. Therefore, it is necessary to remove the ice on the blade surface.

[0003] At present, the traditional de-icing device uses a hot air blower to blow hot air inside the blade to increase the temperature of the blade surface and melt the ice. This method has high heat energy loss and the power of the hot air blower is limited, making it difficult to achieve a good de-icing effect. Utility Model Content

[0004] In order to solve the above technical problems, a circulating hot air deicing device for blades is provided. This technical solution solves the problem that the traditional deicing device proposed in the above background technology uses a hot air blower to blow hot air inside the blade to increase the temperature of the blade surface and thus melt the ice. This method has high heat energy loss and the power of the hot air blower is limited, making it difficult to achieve a good deicing effect.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The cam is provided with a plurality of movable parts, and the movable parts are provided with a plurality of movable parts.

[0007] Optionally, a groove is provided on the front side wall of the cross bar, and the front ends of the two moving blocks are slidably connected to the groove. The left side wall of the upper moving block is fixedly connected to a mounting plate, and a driving motor 1 is fixedly installed on the front end of the mounting plate. The output end of the driving motor 1 passes through the front side wall of the mounting plate and is fixedly connected to a roller, and the roller abuts against the top of the cross bar.

[0008] Optionally, a T-shaped guide groove is provided on the side where the two guide rods are close to each other, and guide blocks are slidably connected inside the two guide grooves. A T-shaped slide groove is provided at the bottom of the movable frame, and slide blocks are slidably connected on the left and right sides of the slide groove, and the sides where the two guide blocks are close to each other are fixedly connected to the slide blocks respectively.

[0009] Optionally, the driving unit includes a connecting block, which is fixedly connected to the bottom of the movable frame, a screw is rotatably installed between the base plate one and the base plate two, the screw is threadedly connected to the connecting block, and a driving motor two is fixedly installed at the front end of the base plate one, and the output end of the driving motor two passes through the front side wall of the driving motor two and is fixedly connected to the front end of the screw.

[0010] Optionally, the sides of the two scrapers that are close to each other are in contact with the upper and lower outer walls of the blade respectively.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This solution is provided with a driving unit, and uses a connecting block to drive the moving frame to move along the guide rod, and uses a scraper to scrape off the ice on the surface of the wind blade, which has a good effect of deicing the blade, reduces the weight of the blade, avoids large vibration of the blade, and ensures the normal rotation speed of the wind turbine blade.

[0013] 2. This solution is provided with a transverse movement unit and a return pipe. While the hot air blower heats the surface of the blade, the moving block is used to drive the hot air blower to move back and forth, so that the blades are heated evenly, and the hot air blown to the end of the blade is circulated to the hot air blower through the return pipe, thereby reducing the power consumption of air supply and heating and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural cross-sectional view of the utility model;

[0016] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0017] Figure 4 It is a three-dimensional structural cross-sectional view of the guide rod, the moving frame and the driving unit in the utility model;

[0018] Figure 5 for Figure 4 A local enlarged schematic diagram of point B in the middle.

[0019] The numbers in the figure are:

[0020] 1. Blade; 2. Fixed plate; 3. Transverse movement unit; 31. Crossbar; 32. Moving block; 33. Groove; 34. Mounting plate; 35. Driving motor 1; 36. Roller; 4. Hot air blower; 5. Return pipe; 6. Bottom plate 1; 7. Bottom plate 2; 8. Guide rod; 81. Guide groove; 82. Guide block; 9. Moving frame; 91. Slide; 92. Slider; 10. Scraper; 11. Driving unit; 111. Connecting block; 112. Screw; 113. Driving motor 2. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Reference Figure 1 As shown, a circulating hot air deicing device for blades comprises a blade 1, the front ends of the inner walls on both sides of the left and right sides of the blade 1 are fixedly connected with fixed plates 2, a transverse movement unit 3 is arranged between the two fixed plates 2, the transverse movement unit 3 comprises a cross bar 31, the left and right ends of the cross bar 31 are respectively fixedly connected with the fixed plates 2, the upper and lower sides of the cross bar 31 are slidably connected with moving blocks 32, the rear ends of the two moving blocks 32 are fixedly installed with hot air blowers 4, the upper and lower ends of the two fixed plates 2 are provided with return pipes 5, the four return pipes 5 are fixedly installed on the inner wall of the blade 1, the bottom front side of the blade 1 is fixedly connected with a bottom plate 1 6, the bottom rear end of the blade 1 is fixedly connected with a bottom plate 2 7, and the left and right sides of the bottom plate 1 6 and the bottom plate 2 7 are fixedly connected with guide rods 8 The upper ends of the two guide rods 8 are slidably connected with a moving frame 9, and the inner walls of the upper and lower sides of the moving frame 9 are fixedly connected with scrapers 10. A driving unit 11 is provided at the bottom of the moving frame 9. When in use, hot air is blown out by the hot air blower 4 to heat the surface of the blade 1. The roller 36 in the transverse unit 3 rolls along the surface of the cross bar 31, so that the moving block 32 drives the hot air blower 4 to reciprocate, so that the blade 1 is heated evenly, which is beneficial to the melting of ice on the surface of the blade 1. The connecting block 111 in the driving unit 11 drives the moving frame 9 to move along the guide rod 8, so that the moving frame 9 drives the scraper 10 to scrape the ice on the surface of the blade 1, which has a good deicing effect, reduces the weight of the blade 1, and ensures the normal rotation speed of the wind turbine blade.

[0023] Further, such as Figure 2-Figure 5As shown, a groove 33 is provided on the front side wall of the cross bar 31, and the front ends of the two moving blocks 32 are slidably connected to the groove 33. The left side wall of the upper moving block 32 is fixedly connected to a mounting plate 34, and a driving motor 35 is fixedly installed on the front end of the mounting plate 34. The output end of the driving motor 35 passes through the front side wall of the mounting plate 34 and is fixedly connected to a roller 36, and the roller 36 abuts against the top of the cross bar 31. A T-shaped guide groove 81 is provided on the side where the two guide rods 8 are close to each other, and guide blocks 82 are slidably connected inside the two guide grooves 81. A T-shaped slide groove 91 is provided at the bottom of the moving frame 9, and sliders 92 are slidably connected on the left and right sides of the slide groove 91. The sides of the two guide blocks 82 close to each other are fixedly connected to the sliders 92 respectively. The driving unit 11 includes a connecting block 111, and the connecting block 111 is fixedly connected to the bottom of the moving frame 9, and is rotatably installed between the bottom plate 1 6 and the bottom plate 2 7. There is a screw 112, which is threadedly connected to the connecting block 111. A driving motor 2 113 is fixedly installed at the front end of the bottom plate 6. The output end of the driving motor 2 113 passes through the front side wall of the driving motor 2 113 and is fixedly connected to the front end of the screw 112. The sides of the two scrapers 10 that are close to each other are respectively in contact with the upper and lower outer walls of the blade 1. The roller 36 is driven to rotate by the driving motor 1 35, so that the roller 36 rolls along the upper surface of the cross bar 31, and then the mounting plate 34 drives the moving block 32 to move, and the moving block 32 drives the hot air blower 4 to reciprocate along the cross bar 31, so that the surface of the blade 1 is heated evenly, and the screw 112 is driven to rotate by the driving motor 2 113, so that the screw 112 drives the connecting block 111 to move, and the connecting block 111 drives the moving frame 9 to move along the surface of the guide rod 8, so that the scraper 10 scrapes the ice along the surface of the blade 1.

[0024] The working principle of the utility model is as follows: when in use, the hot air blower 4 is started to blow out hot air to heat the surface of the blade 1, the drive motor 1 35 is started, and the roller 36 rolls along the surface of the cross bar 31, so that the moving block 32 drives the hot air blower 4 to reciprocate along the cross bar 31, so that the surface of the blade 1 is heated evenly, and the drive motor 2 113 is started, and the moving frame 9 is driven to move along the guide rod 8 through the connecting block 111, so that the scraper 10 scrapes the ice along the surface of the blade 1.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A circulating hot air deicing device for blades, characterized in that: The invention comprises a blade (1), wherein the front ends of the inner walls on the left and right sides of the blade (1) are fixedly connected to fixed plates (2), a transverse movement unit (3) is arranged between the two fixed plates (2), the transverse movement unit (3) comprises a cross bar (31), the left and right ends of the cross bar (31) are respectively fixedly connected to the fixed plates (2), the upper and lower sides of the cross bar (31) are slidably connected to moving blocks (32), the rear ends of the two moving blocks (32) are fixedly mounted with hot air blowers (4), and the upper and lower ends of the two fixed plates (2) are provided with return pipes (5). The four return pipes (5) are fixedly mounted on the inner wall of the blade (1); the front side of the bottom of the blade (1) is fixedly connected to a bottom plate 1 (6); the rear end of the bottom of the blade (1) is fixedly connected to a bottom plate 2 (7); the left and right sides of the bottom plate 1 (6) and the bottom plate 2 (7) are fixedly connected to guide rods (8); the upper ends of the two guide rods (8) are slidably connected to a moving frame (9); the inner walls of the upper and lower sides of the moving frame (9) are fixedly connected to scrapers (10); and a driving unit (11) is provided at the bottom of the moving frame (9).

2. A circulating hot air deicing device for blades according to claim 1, characterized in that: The front side wall of the cross bar (31) is provided with a groove (33), the front ends of the two moving blocks (32) are slidably connected to the groove (33), the left side wall of the upper moving block (32) is fixedly connected to a mounting plate (34), the front end of the mounting plate (34) is fixedly mounted with a driving motor (35), the output end of the driving motor (35) passes through the front side wall of the mounting plate (34) and is fixedly connected with a roller (36), and the roller (36) abuts against the top of the cross bar (31).

3. A circulating hot air deicing device for blades according to claim 1, characterized in that: A T-shaped guide groove (81) is provided on the side where the two guide rods (8) are close to each other, and guide blocks (82) are slidably connected inside the two guide grooves (81). A T-shaped slide groove (91) is provided at the bottom of the movable frame (9), and slide blocks (92) are slidably connected on the left and right sides of the slide groove (91), and the sides where the two guide blocks (82) are close to each other are fixedly connected to the slide blocks (92) respectively.

4. A circulating hot air deicing device for blades according to claim 1, characterized in that: The driving unit (11) comprises a connecting block (111), wherein the connecting block (111) is fixedly connected to the bottom of the moving frame (9), a screw rod (112) is rotatably installed between the bottom plate 1 (6) and the bottom plate 2 (7), the screw rod (112) is threadedly connected to the connecting block (111), and a driving motor 2 (113) is fixedly installed at the front end of the bottom plate 1 (6), and the output end of the driving motor 2 (113) passes through the front side wall of the driving motor 2 (113) and is fixedly connected to the front end of the screw rod (112).

5. A circulating hot air deicing device for blades according to claim 1, characterized in that: The sides of the two scrapers (10) that are close to each other are in contact with the upper and lower outer walls of the blade (1) respectively.

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