Online anti-icing and deicing monitoring device for fan blade

Abstract

An online anti-icing and deicing monitoring device for a fan blade comprises a plurality of piezoelectric sensors arranged on the fan blade, the piezoelectric sensors are electrically connected with the access end of an electric slip ring, and a signal generator is electrically connected with the output end of the electric slip ring; the data collector is electrically connected with the signal generator and the computer; the signal generator amplifies an induction signal of the piezoelectric sensor and sends the induction signal to the computer through the data collector; and when the voltage threshold value displayed by the computer is greater than the preset voltage threshold value, the computer gives an alarm to remind a worker of deicing operation in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan blade monitoring, and relates to an online anti-icing and deicing monitoring device for fan blades. Background Art

[0002] When fans operate under unusual conditions, blades can easily freeze, impacting normal operation. Failure to perform de-icing can easily cause the fans to shut down. Therefore, ensuring the normal operation of fans installed in cold regions during winter icing is a primary concern. Numerous methods for fan blade anti-icing and de-icing have been studied, but remote monitoring of ice crystals on blades remains a key challenge. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an online anti-icing and de-icing monitoring device for fan blades, which detects the voltage value on the surface of the fan blades in real time and issues an alarm when the voltage exceeds a preset threshold.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an online anti-icing and de-icing monitoring device for wind turbine blades, which includes multiple piezoelectric sensors arranged on the wind turbine blades, the piezoelectric sensors are electrically connected to the access end of the electric slip ring, and the signal generator is electrically connected to the output end of the electric slip ring; the data collector is electrically connected to the signal generator and the computer; the signal generator amplifies the sensing signal of the piezoelectric sensor and sends it to the computer through the data collector.

[0005] The piezoelectric sensors are attached to the surface of the fan blades and are distributed.

[0006] When the voltage signal received by the computer is greater than a preset voltage threshold, an alarm is issued.

[0007] The main beneficial effects of the utility model are:

[0008] The electric slip ring is installed between the fan base and the rotating hub. When the electric slip ring rotates synchronously with the rotating hub, it still maintains electrical connection with the piezoelectric sensor on the fan blade, realizing real-time monitoring.

[0009] When ice crystals or ice form on the wind turbine blades, the piezoelectric sensor generates a voltage difference under pressure. The piezoelectric signal is amplified by a signal generator and sent to a computer through a data collector. Remote monitoring is achieved through a remotely installed computer.

[0010] When the voltage threshold displayed by the computer is greater than the preset voltage threshold, the computer will issue an alarm to promptly remind workers that de-icing operations are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] In the figure: fan blade 1; piezoelectric sensor 2; electric slip ring 3; signal generator 4; data acquisition device 5; computer 6. DETAILED DESCRIPTION

[0014] like Figure 1 In the present invention, an online anti-icing and de-icing monitoring device for wind turbine blades is provided, which includes a plurality of piezoelectric sensors 2 arranged on a wind turbine blade 1, wherein the piezoelectric sensors 2 are electrically connected to the input end of an electric slip ring 3, and a signal generator 4 is electrically connected to the output end of the electric slip ring 3; a data collector 5 is electrically connected to the signal generator 4 and a computer 6; the signal generator 4 amplifies the sensing signal of the piezoelectric sensor 2 and sends it to the computer 6 through the data collector 5.

[0015] Preferably, when in use, the electric slip ring 3 is installed between the fan base and the rotating hub. When the electric slip ring 3 rotates synchronously with the rotating hub, it still maintains electrical connection with the piezoelectric sensor 2 on the fan blade 1.

[0016] Preferably, when ice crystals or ice are present on the wind turbine blades 1 , the piezoelectric sensor 2 is pressurized to generate a voltage difference, the piezoelectric signal is amplified by the signal generator 4 , and is sent to the computer 6 via the data collector 5 .

[0017] In a preferred embodiment, the piezoelectric sensors 2 are attached to and dispersed on the surface of the wind turbine blade 1. During use, multiple piezoelectric sensors 2 are distributed over the surface of the wind turbine blade 1 in areas prone to ice formation. Any voltage change in any piezoelectric sensor 2 is amplified by the signal generator 4 and collected by the data collector 5.

[0018] In a preferred embodiment, the computer 6 issues an alarm when the voltage signal received is greater than a preset voltage threshold. When in use, the voltage threshold of each piezoelectric sensor 2 is pre-set, and when the voltage threshold displayed by the computer 6 is greater than the preset voltage threshold, the computer 6 issues an alarm.

[0019] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The embodiments and features therein may be arbitrarily combined unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An online anti-icing and de-icing monitoring device for wind turbine blades, characterized by: The invention comprises a plurality of piezoelectric sensors (2) arranged on a wind turbine blade (1); the piezoelectric sensors (2) are electrically connected to an access end of an electric slip ring (3); a signal generator (4) is electrically connected to an output end of the electric slip ring (3); a data acquisition device (5) is electrically connected to the signal generator (4) and a computer (6); the signal generator (4) amplifies the sensing signal of the piezoelectric sensor (2) and sends the amplified signal to the computer (6) through the data acquisition device (5).

2. The wind turbine blade online anti-icing and de-icing monitoring device according to claim 1 is characterized by: The piezoelectric sensors (2) are attached to the surface of the fan blades (1) and are distributed.

3. The wind turbine blade online anti-icing and de-icing monitoring device according to claim 1 is characterized by: When the voltage signal received by the computer (6) is greater than a preset voltage threshold, an alarm is issued.

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