Novel anti-icing wind power blade device

Abstract

The utility model discloses a novel anti-icing wind power blade device which comprises a blade body, a circulating fan is fixedly installed in the blade root of the blade body, a heating box located on one side of the circulating fan is fixedly installed in the blade body, and a circulating box close to the blade tip is fixedly installed in the blade body. The circulating fan is communicated with the heating box through a guide pipe, an air conveying pipe is fixedly installed at an air outlet of the heating box, a plurality of heat dissipation pipes are arranged at the other end of the air conveying pipe, the other ends of the heat dissipation pipes are fixedly installed on one side of the circulating box, and an air return pipe located on one side of the heat dissipation pipes is fixedly installed on the circulating box. And the other end of the air return pipe is fixedly mounted with an air inlet of the circulating fan. And the capillary heat pipe transfers heat generated by the hot side of the semiconductor chilling plate to the blade tip part of the vane pump body, so that the temperature of the blade tip part is quickly increased, and an ice layer at the blade tip part is better removed.

Description

Technical Field

[0001] The utility model relates to the technical field of blade deicing, in particular to a novel anti-icing wind turbine blade device. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind is a pollution-free energy source. Using wind power for power generation is very environmentally friendly and can generate huge amounts of electricity. Therefore, more and more countries are paying more attention to wind power generation. Although my country has rich wind energy reserves, wind resources are basically distributed in the cold north and the southwest and coastal areas with very high humidity. For fans operating in high-humidity areas, when the ambient temperature drops to around 0"C, water droplets in the humid air will hit the outer surface of the blade, especially the blade tip (the surface temperature of the blade shell is not greater than the ambient temperature), and the latent heat will be released, and ice will occur (i.e. freezing rain ice). In this environment, the blades will freeze, and the ice type is mostly clear ice. When operating in cold areas, ice will accumulate on the blades due to snowfall, and this type of ice is mostly loose ice (frost ice). Once the blade surface is frozen, on the one hand, it will affect the aerodynamic performance of the blade and thus reduce the power generation efficiency of the unit, and even shorten the service life of the blade; on the other hand, during the operation of the blade, when the adhesion of the ice layer decreases, ice cubes are very likely to fall off. Under the action of gravity and centrifugal force, the broken ice will be thrown far away, causing damage to personnel and equipment around the unit.

[0003] The existing blade deicing devices commonly use direct heating and indirect heating. Direct heating uses heat energy to directly heat the blade shell. This heating method requires the installation of a heating element on the blade. When the blade is heated and deformed during use, the heating element will be separated from the blade, affecting the service life of the blade. Indirect heating uses the principle of heat transfer. By setting a blower and a heating element at the root of the blade, the convection heat exchange between the hot air and the surface of the blade inner cavity shell and the heat conduction of the shell can be used to increase the temperature of the outer surface of the blade to achieve the purpose of anti-icing and deicing. The hot air is transported to the leading edge heating area through a conveying pipe using a blower and an air heater. The hot air flows from the root of the blade to the tip of the blade and gradually exchanges heat with the blade shell. The air after heat exchange then flows back to the root of the blade through the cavity between the trailing edge of the blade and the main beam to continue to be heated and used. However, for large-sized blades, the heat is quickly conducted to the tip area, and the deicing effect on the tip area is ignored.

[0004] To this end, we propose a new anti-icing wind turbine blade device. Utility Model Content

[0005] The purpose of the utility model is to provide a novel anti-icing wind turbine blade device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel anti-icing wind turbine blade device, comprising a blade body, a circulation fan is fixedly installed inside the blade root of the blade body, a heating box located on one side of the circulation fan is fixedly installed inside the blade body, a circulation box close to the blade tip is fixedly installed inside the blade body, the circulation fan and the heating box are connected by a conduit, an air supply pipe is fixedly installed at the air outlet of the heating box, a plurality of heat dissipation pipes are arranged at the other end of the air supply pipe, the other end of the heat dissipation pipe is fixedly installed on one side of the heat dissipation pipe, the other end of the return air pipe is fixedly installed on the circulation box, a partition is fixedly installed on the circulation box, a semiconductor refrigeration plate is fixedly installed through the middle of the partition, and capillary heat pipes in close contact with the semiconductor refrigeration plate are fixedly installed through the top and bottom of the circulation box.

[0007] Optionally, a dispersion disc is fixedly installed at the other end of the air supply pipe, a plurality of dispersion tubes are integrally arranged on the outer circumference of the dispersion disc, a ring tube is fixedly installed at the end of the dispersion tube, and a plurality of the heat dissipation tubes are fixedly installed on one side of the ring tube.

[0008] Optionally, the heat dissipation pipe comprises an internally conductive metal pipe, the two ends of the metal pipe are respectively fixedly mounted on the annular pipe and the circulation box, and a heat dissipation fin is provided through the middle of the metal pipe, and the heat dissipation fin is located inside and outside the metal pipe with the same length.

[0009] Optionally, the heat dissipation pipe is fixedly mounted against the inner wall of the blade body through a connecting frame, and a plurality of the heat dissipation pipes are evenly distributed on the inner wall of the blade body.

[0010] Optionally, one end of the capillary heat pipe is in close contact with the hot side of the semiconductor refrigeration plate, and the portion of the capillary heat pipe located outside the circulation box is in close contact with the inside of the tip portion of the blade body.

[0011] Optionally, one end of the conduit is fixedly mounted to the air outlet of the circulation fan, and the other end of the conduit is fixedly mounted to the air inlet of the heating box.

[0012] Optionally, the cold side of the semiconductor refrigeration plate is located at the connection between the circulation box, the heat dissipation pipe and the return air pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This new anti-icing wind turbine blade device is equipped with a circulation box and a capillary heat pipe. The circulating fan sends air into the heating box for heating. The high-temperature air is then sent to the heat pipe, metal pipe and heat sink fins through the air supply pipe for heat exchange. The heat is transferred to the blade body and blown into the circulation box. At the same time, the semiconductor refrigeration sheet works to transfer the heat generated by the hot side of the semiconductor refrigeration sheet to the tip of the blade pump body through the capillary heat pipe, which quickly increases the temperature of the blade tip and better removes the ice layer at the blade tip.

[0015] This new anti-icing wind turbine blade device is equipped with a return air duct. The heat dissipation pipe conducts hot air to the circulation box. The high-temperature air heats the cold side of the semiconductor refrigeration plate to prevent the cold side temperature of the semiconductor refrigeration plate from being too low. The air after heating the semiconductor refrigeration plate returns to the circulation fan through the return air duct and is heated again by the heating box. The temperature of the circulating air is increased by circulating heating of the air, thereby improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a novel anti-icing wind turbine blade device of the utility model;

[0017] Figure 2 This is a schematic structural diagram of a blade body of a novel anti-icing wind turbine blade device of the utility model;

[0018] Figure 3 The utility model is a novel anti-icing wind turbine blade device Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of a circulation box of a novel anti-icing wind turbine blade device of the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the structure of a heat dissipation pipe of a novel anti-icing wind turbine blade device.

[0021] In the figure: 1. blade body; 2. circulation fan; 3. duct; 4. heating box; 5. air supply pipe; 6. dispersion disc; 7. dispersion pipe; 8. ring pipe; 9. heat dissipation pipe; 91. metal pipe; 92. heat dissipation fin; 10. circulation box; 11. return air pipe; 12. partition; 13. semiconductor refrigeration sheet; 14. capillary heat pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 5 The utility model provides a novel anti-icing wind turbine blade device, including a blade body 1, a circulating fan 2 is fixedly installed inside the blade root of the blade body 1, a heating box 4 located on one side of the circulating fan 2 is fixedly installed inside the blade body 1, a circulating box 10 near the blade tip is fixedly installed inside the blade body 1, the circulating fan 2 and the heating box 4 are connected through a conduit 3, an air delivery pipe 5 is fixedly installed at the air outlet of the heating box 4, a plurality of heat dissipation pipes 9 are arranged at the other end of the air delivery pipe 5, and the other end of the heat dissipation pipe 9 is fixedly connected to one side of the circulating box 10. The circulation box 10 is fixedly installed with a return air duct 11 located on one side of the heat dissipation pipe 9, and the other end of the return air duct 11 is fixedly installed with the air inlet of the circulation fan 2. A partition 12 is integrally arranged inside the circulation box 10, and a semiconductor refrigeration sheet 13 is fixedly installed through the middle of the partition 12. A capillary heat pipe 14 in close contact with the semiconductor refrigeration sheet 13 is fixedly installed through the top and bottom of the circulation box 10, and one end of the capillary heat pipe 14 is in close contact with the hot side of the semiconductor refrigeration sheet 13. The capillary heat pipe 14 is located outside the circulation box 10. The circulating fan 2 is in close contact with the inner part of the tip of the blade body 1, and the circulating box 10 and the capillary heat pipe 14 are arranged. The circulating fan 2 sends air into the heating box 4 for heating. The high-temperature air is sent to the heat dissipation pipe 9 through the air supply pipe 5, and the metal pipe 91 and the heat dissipation fins 92 are heat exchanged, and the heat is transmitted to the blade body 1 and blown into the circulating box 10. At the same time, the semiconductor cooling sheet 13 works to transfer the heat generated by the hot side of the semiconductor cooling sheet 13 to the tip of the blade pump body through the capillary heat pipe 14, so as to quickly increase the temperature of the tip of the blade and better remove the heat. After removing the ice layer at the blade tip, the cold side of the semiconductor refrigeration plate 13 is located at the connection between the circulation box 10, the heat dissipation pipe 9 and the return air duct 11. By setting the return air duct 11, the heat dissipation pipe 9 conducts the hot air to the circulation box 10, and the high-temperature air heats the cold side of the semiconductor refrigeration plate 13 to prevent the cold side temperature of the semiconductor refrigeration plate 13 from being too low. The air after heating the semiconductor refrigeration plate 13 returns to the circulation fan 2 through the return air duct 11 and is heated again by the heating box 4. The temperature of the circulating air is increased by circulating heating of the air, thereby improving the heating efficiency.

[0024] A dispersion disc 6 is fixedly installed at the other end of the air supply pipe 5. A plurality of dispersion tubes 7 are integrally arranged on the outer circumference of the dispersion disc 6. An annular tube 8 is fixedly installed at the end of the dispersion tube 7. A plurality of heat dissipation tubes 9 are fixedly installed on one side of the annular tube 8.

[0025] The heat dissipation pipe 9 includes an internally conductive metal pipe 91, the two ends of which are fixedly mounted to the annular pipe 8 and the circulation box 10 respectively. A heat dissipation fin 92 is provided through the middle of the metal pipe 91. The heat dissipation fin 92 is located inside and outside the metal pipe 91 with the same length. The heat dissipation pipe 9 is fixedly mounted against the inner wall of the blade body 1 through a connecting frame, and a plurality of heat dissipation pipes 9 are evenly distributed on the inner wall of the blade body 1.

[0026] One end of the conduit 3 is fixedly installed with the air outlet of the circulation fan 2 , and the other end of the conduit 3 is fixedly installed with the air inlet of the heating box 4 .

[0027] Working principle:

[0028] The air from the circulating fan 2 is sent to the heating box 4 for heating. The high-temperature air is then sent to the heat dissipation pipe 9 through the air supply pipe 5. The metal pipe 91 and the heat dissipation fins 92 perform heat exchange, and the heat is transmitted to the blade body 1 and blown into the circulation box 10. At the same time, the semiconductor refrigeration sheet 13 works to transfer the heat generated by the hot side of the semiconductor refrigeration sheet 13 to the tip of the blade pump body through the capillary heat pipe 14, which quickly increases the temperature of the tip of the blade and better removes the ice layer at the tip of the blade. The heat dissipation pipe 9 conducts the hot air to the circulation box 10. The high-temperature air heats the cold side of the semiconductor refrigeration sheet 13 to prevent the cold side of the semiconductor refrigeration sheet 13 from being too low. The air after heating the semiconductor refrigeration sheet 13 returns to the circulating fan 2 through the return air pipe 11, and is heated again by the heating box 4. The temperature of the circulating air is increased through the circulating heating of the air, thereby improving the heating efficiency.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel anti-icing wind turbine blade device, comprising a blade body (1), characterized in that: A circulating fan (2) is fixedly installed inside the blade root of the blade body (1), a heating box (4) located on one side of the circulating fan (2) is fixedly installed inside the blade body (1), a circulating box (10) close to the blade tip is fixedly installed inside the blade body (1), the circulating fan (2) and the heating box (4) are connected via a conduit (3), an air supply pipe (5) is fixedly installed at the air outlet of the heating box (4), a plurality of heat dissipation pipes (9) are arranged at the other end of the air supply pipe (5), and the other end of the heat dissipation pipe (9) is provided. The end of the circulation box (10) is fixedly mounted on one side of the circulation box (10); the circulation box (10) is fixedly mounted with a return air duct (11) located on one side of the heat dissipation pipe (9); the other end of the return air duct (11) is fixedly mounted on an air inlet of the circulation fan (2); a partition (12) is integrally provided inside the circulation box (10); a semiconductor cooling sheet (13) is fixedly mounted through the middle of the partition (12); and a capillary heat pipe (14) in close contact with the semiconductor cooling sheet (13) is fixedly mounted through the top and bottom of the circulation box (10).

2. A novel anti-icing wind turbine blade device according to claim 1, characterized in that: A dispersion disc (6) is fixedly mounted on the other end of the air supply pipe (5); a plurality of dispersion tubes (7) are integrally arranged on the outer peripheral surface of the dispersion disc (6); an annular tube (8) is fixedly mounted on the end of the dispersion tube (7); and a plurality of heat dissipation tubes (9) are fixedly mounted on one side of the annular tube (8).

3. The novel anti-icing wind turbine blade device according to claim 1 is characterized in that: The heat dissipation pipe (9) comprises an internally conductive metal pipe (91), the two ends of the metal pipe (91) being fixedly mounted to the annular pipe (8) and the circulation box (10) respectively, and a heat dissipation fin (92) is provided through the middle of the metal pipe (91), and the heat dissipation fin (92) is located inside and outside the metal pipe (91) with the same length.

4. The novel anti-icing wind turbine blade device according to claim 1 is characterized in that: The heat dissipation pipe (9) is fixedly mounted against the inner wall of the blade body (1) via a connecting frame, and a plurality of the heat dissipation pipes (9) are evenly distributed on the inner wall of the blade body (1).

5. The novel anti-icing wind turbine blade device according to claim 1 is characterized in that: One end of the capillary heat pipe (14) is in close contact with the hot side of the semiconductor cooling plate (13), and the portion of the capillary heat pipe (14) located outside the circulation box (10) is in close contact with the inside of the blade tip portion of the blade body (1).

6. The novel anti-icing wind turbine blade device according to claim 1 is characterized in that: One end of the duct (3) is fixedly mounted to the air outlet of the circulation fan (2), and the other end of the duct (3) is fixedly mounted to the air inlet of the heating box (4).

7. The novel anti-icing wind turbine blade device according to claim 5 is characterized in that: The cold side of the semiconductor refrigeration sheet (13) is located at the connection between the circulation box (10), the heat dissipation pipe (9) and the return air pipe (11).

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