Deicing device for fan blade

Abstract

The utility model belongs to the technical field of fan blades, and particularly relates to a fan blade deicing device which comprises a fan blade and a metal skin, the metal skin is installed on one side of the upper surface of the fan blade, a deicing actuator is installed on one side of the upper surface of the fan blade, and a deicing mechanism is arranged at one end of the upper surface of the fan blade. The deicing mechanism comprises a deicing coil, a pulse generator, a discharge switch, a discharge loop, a first wire, a voltage doubling circuit module, a power line and a control transmission line. According to the de-icing device for the fan blade, the de-icing mechanism is arranged, so that an icing layer on the outer surface of the fan blade can be broken, pulsation is generated through the pulse generator, a metal skin on the upper portion induces eddy current to generate pulses, and the ice layer falls off; by arranging the voltage doubling circuit module, the whole circuit can be boosted, a capacitor in the circuit is charged, and then the control circuit module emits an electric signal to the pulse generator, so that quick response can be performed for deicing, and the deicing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blades, in particular to a fan blade deicing device. Background Art

[0002] Wind turbine blades are one of the core components of wind turbines, accounting for about 15%-20% of the total cost of wind turbines. The quality of their design will directly affect the performance and benefits of wind turbines. Wind turbine blade icing will seriously affect the normal operation and safety of wind turbines, so it is crucial to take effective prevention and control measures. Reduce the negative impact of wind turbine blade icing on wind turbines and improve the operating efficiency and safety of wind farms.

[0003] There is no perfect blade de-icing control device at present. The wind turbine icing problem has seriously hindered the development of wind power industry at home and abroad.

[0004] Therefore, we propose a fan blade deicing device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a fan blade deicing 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 fan blade deicing device, comprising a fan blade and a metal skin, wherein the metal skin is installed on one side of the upper surface of the fan blade, a deicing actuator is installed on one side of the upper surface of the fan blade, and a deicing mechanism is provided at one end of the upper surface of the fan blade;

[0007] The deicing mechanism includes a deicing coil, a pulse generator, a discharge switch, a discharge circuit, a first wire, a voltage doubling circuit module, a power line and a control transmission line. The deicing coil is fixedly installed on the upper surface of the fan blade, the pulse generator is fixedly installed on the upper surface of the fan blade, the discharge switch is fixedly installed on the upper surface of the fan blade, the discharge circuit is connected to one end surface of the pulse generator, the first wire is fixedly connected to the other end surface of the discharge circuit, the voltage doubling circuit module is fixedly installed on the upper surface of the fan blade, the power line is fixedly installed on one end surface of the voltage doubling circuit module, and the control transmission line is fixedly connected to one end surface of the voltage doubling circuit module.

[0008] Preferably, the other end surface of the voltage doubling circuit module is connected to a power line, and a power line conductive slip ring is installed on one side of the upper surface of the fan blade, and the power line conductive slip ring is connected to one end of the power line.

[0009] Preferably, the deicing coils are distributed on the upper surface of the fan blades at equal intervals, one end of the discharge switch is electrically connected to the deicing coil through a first wire, a second wire is fixedly connected to the surface of one end of the pulse generator, and one end of the second wire is connected to a power line.

[0010] Preferably, the pulse generator is electrically connected to the power supply and the de-icing actuator, and the pulse generator is electrically connected to an external communication control module.

[0011] Preferably, five regions are arranged on one side of the upper surface of the fan blade, and the deicing actuators are sequentially distributed in the five regions at equal intervals.

[0012] Preferably, the metal skin covers the deicing actuator and the upper surface of the deicing coil, and the periphery of the metal skin is fixedly connected to the upper surface of the fan blade.

[0013] Preferably, the power cord passes through a power cord conductive slip ring to be electrically connected to a power supply, and the power supply is used to power the voltage doubler circuit module and the entire circuit. The voltage doubler circuit module works to boost the circuit and provide a stable power output for the pulse generator and the deicing coil for deicing.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The fan blade deicing device can break the ice layer on the outer surface of the fan blade by setting a deicing mechanism. The pulse generator generates pulsation so that the upper metal skin will induce eddy current to generate pulses to cause the ice layer to fall off.

[0016] 2. The fan blade deicing device can perform voltage boost processing on the entire circuit by setting a voltage doubling circuit module, and after charging the capacitor therein, the control circuit module transmits an electrical signal to the pulse generator, which can react quickly to de-ice and improve the de-icing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the deicing coil structure of the utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the circuit connection structure of the pulse generator of the utility model.

[0021] In the figure: 1. fan blades; 2. metal skin; 3. deicing actuator; 4. deicing coil; 401. pulse generator; 402. discharge switch; 403. discharge loop; 404. first conductor; 405. voltage doubling circuit module; 406. power line connected to conductive slip ring; 407. power line; 408. control transmission line; 409. second conductor. 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 Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] Embodiment 1: A fan blade deicing device comprises a fan blade 1 and a metal skin 2, wherein the metal skin 2 is mounted on one side of the upper surface of the fan blade 1, a deicing actuator 3 is mounted on one side of the upper surface of the fan blade 1, five sections are arranged on one side of the upper surface of the fan blade 1, the deicing actuator 3 is sequentially distributed in the five sections at equal intervals, and a deicing mechanism is arranged at one end of the upper surface of the fan blade 1;

[0025] The deicing mechanism includes a deicing coil 4, a pulse generator 401, a discharge switch 402, a discharge circuit 403, a first wire 404, a voltage doubling circuit module 405, a power line 407 and a control transmission line 408. The deicing coil 4 is fixedly installed on the upper surface of the fan blade 1, the pulse generator 401 is fixedly installed on the upper surface of the fan blade 1, the discharge switch 402 is fixedly installed on the upper surface of the fan blade 1, the discharge circuit 403 is connected to one end surface of the pulse generator 401, the first wire 404 is fixedly connected to the other end surface of the discharge circuit 403, the voltage doubling circuit module 405 is fixedly installed on the upper surface of the fan blade 1, the power line 407 is fixedly installed on one end surface of the voltage doubling circuit module 405, and the control transmission line 408 is fixedly connected to one end surface of the voltage doubling circuit module 405. By setting the deicing mechanism, the ice layer on the outer surface of the fan blade 1 can be broken, and the pulse generator 401 is pulsated so that the upper metal skin 2 will induce eddy current to generate pulses to cause the ice layer to fall off.

[0026] The deicing coils 4 are distributed on the upper surface of the fan blades 1 at equal intervals. One end of the discharge switch 402 is electrically connected to the deicing coil 4 through the first wire 404. A second wire 409 is fixedly connected to the surface of one end of the pulse generator 401. One end of the second wire 409 is connected to the power line 407.

[0027] After the entire circuit is connected to the power supply through the power cord 407, the voltage of the entire circuit is boosted through the voltage doubling circuit module 405 to charge the capacitor in the circuit. After it is fully charged, the power supply is disconnected and controlled by the control circuit module. After the capacitor is fully charged, the pulse generator 401 is quickly discharged, so that the deicing coil 4 generates an instantaneous changing pulse current for deicing.

[0028] Embodiment 2: Based on embodiment 1, a power cord 407 is connected to the surface of the other end of the voltage doubling circuit module 405, and a power cord conductive slip ring 406 is installed on one side of the upper surface of the fan blade 1. The power cord conductive slip ring 406 is connected to one end of the power cord 407, and the power cord 407 passes through the power cord conductive slip ring 406 to be electrically connected to the power supply.

[0029] The pulse generator 401 is connected to the power supply and the de-icing actuator 3 by telecommunication, and is electrically connected to the external communication control module. The metal skin 2 covers the de-icing actuator 3 and the upper surface of the de-icing coil 4, and the outer periphery of the metal skin 2 is fixedly connected to the upper surface of the fan blade 1. By setting the voltage doubling circuit module 405, the entire circuit can be boosted, and the capacitor therein can be charged. After that, the pulse generator 401 is emitted with an electrical signal through the control circuit module, which can respond quickly to de-icing and improve the de-icing efficiency.

[0030] After the pulse generator 401 generates a pulse signal, the de-icing actuator 3 executes the de-icing signal. The pulse generator 401 sends the pulse signal to the de-icing coil 4 so that the metal skin 2 installed on the upper surface of the de-icing coil 4 induces eddy currents on its upper surface to generate instantaneous pulse force to break and remove the ice layer on the outer surface of the fan blade 1 to complete de-icing.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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 "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A fan blade deicing device, comprising a fan blade (1) and a metal skin (2), wherein the metal skin (2) is mounted on one side of the upper surface of the fan blade (1), and a deicing actuator (3) is mounted on one side of the upper surface of the fan blade (1), characterized in that: A deicing mechanism is provided at one end of the upper surface of the fan blade (1); The deicing mechanism comprises a deicing coil (4), a pulse generator (401), a discharge switch (402), a discharge circuit (403), a first wire (404), a voltage doubling circuit module (405), a power line (407) and a control transmission line (408); the deicing coil (4) is fixedly mounted on the upper surface of the fan blade (1); the pulse generator (401) is fixedly mounted on the upper surface of the fan blade (1); the discharge switch (402) is fixedly mounted on the upper surface of the fan blade (1); the discharge circuit (403) is connected to one end surface of the pulse generator (401); the first wire (404) is fixedly connected to the other end surface of the discharge circuit (403); the voltage doubling circuit module (405) is fixedly mounted on the upper surface of the fan blade (1); the power line (407) is fixedly mounted on one end surface of the voltage doubling circuit module (405); and the control transmission line (408) is fixedly connected to one end surface of the voltage doubling circuit module (405).

2. A fan blade deicing device according to claim 1, characterized in that: The other end surface of the voltage doubling circuit module (405) is connected to a power line (407), and one side of the upper surface of the fan blade (1) is provided with a power line conductive slip ring (406), and the power line conductive slip ring (406) is connected to one end of the power line (407).

3. A fan blade deicing device according to claim 1, characterized in that: The deicing coils (4) are distributed in sequence at equal intervals on the upper surface of the fan blades (1); one end of the discharge switch (402) is electrically connected to the deicing coil (4) via a first wire (404); a second wire (409) is fixedly connected to the surface of one end of the pulse generator (401); and one end of the second wire (409) is connected to a power line (407).

4. A fan blade deicing device according to claim 1, characterized in that: The pulse generator (401) is electrically connected to the power supply and the de-icing actuator (3), and the pulse generator (401) is electrically connected to an external communication control module.

5. A fan blade deicing device according to claim 1, characterized in that: One side of the upper surface of the fan blade (1) is provided with five sections of regions, and the deicing actuators (3) are distributed in the five sections of regions in sequence at equal intervals.

6. A fan blade deicing device according to claim 1, characterized in that: The metal skin (2) covers the upper surface of the deicing actuator (3) and the deicing coil (4), and the periphery of the metal skin (2) is fixedly connected to the upper surface of the fan blade (1).

7. A fan blade deicing device according to claim 2, characterized in that: The power line (407) passes through the power line conductive slip ring (406) and is electrically connected to the power supply.

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