Anti-corrosion system for offshore wind power cabin cover

Abstract

The invention relates to an anti-corrosion system for an offshore wind power cabin cover. The anti-corrosion system comprises a controller, micro-positive pressure equipment and a plurality of differential pressure sensors, the plurality of differential pressure sensors are respectively arranged near key components in the cabin; the controller is electrically connected with the micro-positive pressure equipment and the plurality of differential pressure sensors; the micro-positive pressure equipment comprises an air filtering layer, a salt filtering layer, a mist filtering layer, a positive pressure fan, a rotating wheel adsorption dehumidification layer and a heater. The cabin cover has the beneficial effects that the sealing layers are additionally arranged at the joints of all the parts of the cabin cover and are sealed and reinforced through the sealing cement gum layers, the multiple polyaspartic acid ester layers with certain thicknesses are additionally arranged outside the cabin cover to serve as the shell of the cabin cover, holes are reduced from the equipment level, and the sealing performance of the cabin cover is improved. Most of salt and water vapor in external air are isolated as far as possible; the anti-corrosion system enables the air humidity and salinity in the cabin cover to be within target values, so that condensation is prevented from being generated on the surface of key electrical equipment, and the anti-corrosion effect on the wind turbine generator is achieved.

Description

Technical Field

[0001] The invention belongs to the field of wind turbine cabin cover anti-corrosion, and in particular relates to an offshore wind turbine cabin cover anti-corrosion system. Background Art

[0002] Due to the manufacturing process or requirements of the nacelle cover, there must be some gaps or holes on the nacelle cover. According to statistics, under the fairly common wind speed conditions at sea: 12m / s, a gap or hole of about 1cm in diameter can pass through the nacelle. 2 The small hole is about 6m 3 / h of air enters the cabin. The outside air entering the cabin will bring salt, water vapor, etc. into the cabin. Over time, it will cause condensation on the surface of the key electrical equipment of the wind turbine, thereby corroding the wind turbine. Therefore, it is necessary to control the air humidity and salinity of the wind turbine and the wind turbine cabin cover. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an offshore wind turbine nacelle cover anti-corrosion system.

[0004] This cabin cover with a sealing layer: sealing layers are provided at the connections between the sub-covers on the six faces of the cabin cover and the cubic cabin cover frame, and at the flanges arranged between two adjacent sub-covers, and sealing putty layers are provided between the sealing layers and the parts in contact with the sealing layer body; the surfaces of the sub-covers on the six faces of the cabin cover are fixedly connected to the outer shell, and the outer shell is a polyaspartic acid ester layer with a certain thickness.

[0005] An offshore wind turbine nacelle cover anti-corrosion system using a nacelle cover with a sealing layer, the system comprising: a controller, a micro-positive pressure device and a plurality of differential pressure sensors; the plurality of differential pressure sensors are respectively arranged near key components in the nacelle (such as a nacelle control cabinet, a generator, a gear box, etc.) for real-time monitoring of the air pressure value in the nacelle; the controller is electrically connected to the micro-positive pressure device and the plurality of differential pressure sensors;

[0006] The micro-positive pressure equipment includes an air filter layer, a salt filter layer, a mist filter layer, a positive pressure fan, a rotary adsorption dehumidification layer and a heater;

[0007] The air inlet of the anti-corrosion system is connected to the air outlet of the cabin cover, and an air filter layer, a salt filter layer and a fog filter layer are arranged in sequence on the air duct behind the air inlet of the anti-corrosion system; the outlet of the air duct behind the fog filter layer is connected to the air inlet of the positive pressure fan, and the air duct behind the air outlet of the positive pressure fan is divided into three routes: the first air duct is connected to the cabin, and the processed air in this route is directly discharged into the cabin to dehumidify the cabin air and maintain a slightly positive pressure state; the second air duct is connected to the heater, and a rotor adsorption dehumidification layer is arranged on the second air duct in front of the heater, the air duct behind the heater is connected to the rotor regeneration area, and the air duct behind the rotor regeneration area is connected to the outside of the cabin, and the processed air in this route enters the rotor regeneration area in the reverse direction after being heated by the heater, and the high-temperature air (generally 100-140°C) passes through the rotor after moisture absorption in the reverse direction to evaporate the moisture adsorbed in the rotor, thereby the regenerated air becomes humid air, and the humid air is discharged outside the cabin; the third air duct is connected back to the air duct in front of the air filter layer, and the third part of the air is used as return air to dry the filter.

[0008] Preferably, an adsorption medium is provided in the rotary wheel adsorption dehumidification layer.

[0009] The beneficial effects of the present invention are:

[0010] The present invention adds a sealing layer at the connection between the components of the cabin cover, and uses a sealing putty layer for sealing reinforcement, and also adds a plurality of polyaspartic acid ester layers with a certain thickness on the outside of the cabin cover as the outer shell of the cabin cover, thereby reducing holes at the equipment level and isolating most of the salt and water vapor in the outside air as much as possible.

[0011] In addition, the offshore wind turbine cabin cover anti-corrosion system designed by the present invention includes a micro-positive pressure device with an air filter layer, a salt filter layer, a fog filter layer, a positive pressure fan, a rotor adsorption dehumidification layer and a heater, and is equipped with a controller matching the micro-positive pressure device. The controller drives the micro-positive pressure device to work based on the pressure difference data obtained by the pressure difference sensor near the key components in the cabin, so that the air humidity and salinity in the cabin cover are within the target values, thereby preventing condensation on the surface of key electrical equipment and playing an anti-corrosion role for the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the sealing layer structure of the present invention;

[0013] Figure 2 A model diagram of the anti-corrosion system for offshore wind turbine cabin cover of the present invention;

[0014] Figure 3 It is a schematic structural diagram of the anti-corrosion system for offshore wind turbine cabin cover of the present invention.

[0015] Explanation of the reference numerals: sealing layer 1, outer shell 2, cabin cover 3, micro positive pressure equipment 4, positive pressure fan 5, air filter layer 6, salt filter layer 7, fog filter layer 8, rotor adsorption dehumidification layer 9, cabin interior 10, heater 11, rotor regeneration area 12, cabin exterior 13. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0017] Example 1

[0018] like Figure 1 As shown, a cabin cover with a sealing layer, the connections between the sub-covers on the six faces of the cabin cover 3 and the cubic cabin cover frame, and the flanges arranged between two adjacent sub-covers are provided with sealing layers 1, and sealing putty layers are provided between the sealing layer 1 and the parts in contact with the sealing layer 1 body; the surfaces of the sub-covers on the six faces of the cabin cover 3 are fixedly connected to the outer shell 2, and the outer shell 2 is a polyaspartic acid ester layer with a certain thickness.

[0019] Example 2

[0020] like Figure 2 and Figure 3 As shown, on the basis of Example 1, an offshore wind turbine nacelle cover anti-corrosion system using a nacelle cover with a sealing layer of Example 1 comprises: a controller, a micro-positive pressure device 4 and a plurality of differential pressure sensors; the plurality of differential pressure sensors are respectively arranged near key components in the nacelle 10 (such as a nacelle control cabinet, a generator, a gear box, etc.) for real-time monitoring of the air pressure value in the nacelle; the controller is electrically connected to the micro-positive pressure device 4 and the plurality of differential pressure sensors;

[0021] The micro-positive pressure device 4 includes an air filter layer 6, a salt filter layer 7, a mist filter layer 8, a positive pressure fan 5, a rotary adsorption dehumidification layer 9 (with an adsorption medium therein) and a heater 11;

[0022] The air inlet of the anti-corrosion system is connected to the air outlet of the cabin cover, and an air filter layer 6, a salt filter layer 7 and a fog filter layer 8 are sequentially arranged on the air duct behind the air inlet of the anti-corrosion system; the air duct outlet behind the fog filter layer 8 is connected to the air inlet of the positive pressure fan 5, and the air duct behind the air outlet of the positive pressure fan 5 is divided into three routes: the first air duct is connected to the cabin 10, and the processed air is directly discharged into the cabin to dehumidify the cabin air and maintain a slightly positive pressure state; the second air duct is connected to the heater 11, and a rotor is arranged on the second air duct in front of the heater 11 The adsorption dehumidification layer 9, the air duct after the heater 11 is connected to the rotor regeneration area 12, and the air duct after the rotor regeneration area 12 is connected to the cabin outside 13. The processed air is heated by the heater and then reversely enters the rotor regeneration area. The high-temperature air (generally 100-140°C) passes through the rotor after moisture absorption in the reverse direction, so that the adsorbed water in the rotor evaporates, thereby the regenerated air becomes humid air, and the humid air is discharged out of the cabin; the third air duct is connected back to the air duct in front of the air filter layer 6, and the third part of the air is used as return air to dry the filter.

Claims

1. A nacelle cover with a sealing layer, characterized in that: Sealing layers (1) are provided at the connection points between the sub-covers and the cubical nacelle cover frame on the six faces of the nacelle cover (3), and at the flanges provided between two adjacent sub-covers. Sealing glue layers are provided between the sealing layers (1) and the parts in contact with the sealing layer (1) body. The surface layers of the sub-covers on the six faces of the nacelle cover (3) are fixedly connected to the outer shell (2), and the outer shell (2) is a polyaspartic acid ester layer having a certain thickness.

2. An offshore wind turbine nacelle anti-corrosion system using the nacelle with a sealing layer as claimed in claim 1, characterized in that: The system comprises: a controller, a micro-positive pressure device (4) and a plurality of differential pressure sensors; the plurality of differential pressure sensors are respectively arranged near key components in the cabin (10); the controller is electrically connected to the micro-positive pressure device (4) and the plurality of differential pressure sensors; The micro-positive pressure device (4) comprises an air filter layer (6), a salt filter layer (7), a mist filter layer (8), a positive pressure fan (5), a rotary wheel adsorption dehumidification layer (9) and a heater (11); The air inlet of the anti-corrosion system is connected to the air outlet of the cabin cover, and an air filter layer (6), a salt filter layer (7) and a fog filter layer (8) are arranged in sequence on the air duct behind the air inlet of the anti-corrosion system; the air duct outlet behind the fog filter layer (8) is connected to the air inlet of the positive pressure fan (5), and the air duct behind the air outlet of the positive pressure fan (5) is divided into three paths: the first air duct is connected to the cabin (10); the second air duct is connected to the heater (11), a rotor adsorption dehumidification layer (9) is arranged on the second air duct in front of the heater (11), the air duct behind the heater (11) is connected to the rotor regeneration area (12), and the air duct behind the rotor regeneration area (12) is connected to the outside of the cabin (13); and the third air duct is connected back to the air duct in front of the air filter layer (6).

3. The offshore wind turbine nacelle anti-corrosion system according to claim 2 is characterized in that: An adsorption medium is provided in the rotary wheel adsorption dehumidification layer (9).

Images