CN202023685U - Wind driven generator set - Google Patents

Abstract

The utility model relates to the technical field of wind power generators, and in particular discloses a wind power generator capable of ensuring that parts in the unit are not corroded by external corrosive air, which includes a tower, a nacelle and an impeller, the tower, the nacelle, The impeller forms an integral sealed space; it also includes an air intake treatment system, which includes a ventilation pipe, a filter device and a dehumidification device, the air inlet of the ventilation pipe communicates with the atmosphere, and the air outlet of the ventilation pipe communicates with the atmosphere. The sealed space is connected, and the filtering device and the dehumidifying device are arranged on the ventilation pipe. The wind turbine with this structure seals the tower, nacelle, and impeller into an integral sealed space, and relatively dry and pure air enters the sealed space, so that the sealed space always maintains a dynamic micro-positive pressure state against the outside world, which can Effectively prevent external corrosive air from entering the unit, and minimize the corrosion caused by sea humidity and salt spray.

Description

a wind turbine

technical field

The utility model relates to the technical field of wind power generator sets, in particular to a wind power generator set which can ensure that parts in the set are not corroded by external corrosive air.

Background technique

After years of development, the technology of offshore wind power generation has become more and more mature, and the resource conditions of offshore wind power are better than those on land. However, compared with onshore wind power generation, there are many difficulties in offshore wind power generation. Among them, the anti-salt spray corrosion technology of offshore wind power generation units is offshore wind power generation A major technical problem faced by the crew.

The strong corrosiveness of seawater and the high salinity and high humidity in the sea air have greatly increased the difficulty of the offshore wind power industry. From the basic structure to the tower, from the hub to the engine room, from various mechanical components to electrical components, these require frequent marine The test of the corrosive environment, some even fatal, has greatly restricted the development of the offshore wind power industry.

At present, there are mainly the following schemes for offshore wind turbines to prevent salt spray corrosion:

1. The engine room is completely sealed to avoid the entry of external air containing salt mist. However, due to manufacturing process problems, gaps are easily formed at the joints of components, and external air containing salt mist can still enter the unit, causing corrosion to the components of the unit.

2. For mechanical parts, increasing the thickness of the anti-corrosion coating or using special anti-corrosion materials not only increases the cost, but also the service life of the anti-corrosion coating is generally 15 years, which is difficult to meet the 20 years required by the unit.

3. For electrical components, improve the protection level of the equipment shell to isolate the air to achieve anti-corrosion, but the heat of electrical equipment during operation is difficult to dissipate, resulting in frequent failures of electrical equipment.

Therefore, how to develop a wind power generating set that can ensure that the internal components of the set are not corroded by external corrosive air has become a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a wind power generating set, which can ensure that the internal parts of the set are not corroded by external corrosive air.

In order to achieve the above purpose, the utility model provides a wind power generating set, including a tower, a nacelle and an impeller, and the tower, the nacelle, and the impeller form an integral sealed space; it also includes an air intake treatment system, The air intake treatment system includes a ventilation pipe, a filter device and a dehumidification device, the air inlet of the ventilation pipe communicates with the atmosphere, the air outlet of the ventilation pipe communicates with the sealed space, the filter device and the dehumidification device are arranged in on the vent pipe.

Preferably, the air intake treatment system is arranged at the bottom of the tower, and the air outlet of the ventilation pipe communicates with the tower.

Preferably, the dehumidification device is arranged in the tower.

Preferably, the dehumidification device is a rotary dehumidifier.

Preferably, a blower is provided at the air outlet of the ventilation pipe.

Preferably, a blower is provided on the upper platform of the tower, the air inlet of the blower communicates with the tower, and the air outlet of the blower communicates with the engine room.

Preferably, it also includes a differential pressure sensor for detecting the air pressure in the sealed space relative to the outside.

Preferably, the joints between the nacelle and the tower, and the joints between the nacelle and the impeller are sealed with sealing rings.

The wind power generating set provided by the utility model includes a tower, a nacelle, an impeller and an air intake treatment system; the tower, the nacelle and the impeller form an integral sealed space; the air intake treatment system includes a ventilation pipe, a filtering device and a dehumidification device, and the ventilation pipe The air inlet of the ventilation pipe is connected with the atmosphere, the air outlet of the ventilation pipe is connected with the sealed space, and the filtering device and the dehumidification device are arranged on the ventilation pipe.

The wind turbine with this structure seals the tower, the nacelle and the impeller into an integral sealed space. The air outlet of the ventilation pipe of the air intake treatment system is connected with the sealed space, and the corrosive gas on the sea enters through the air inlet of the ventilation pipe. In the ventilation pipe, the filter device can filter the salt spray particles in the corrosive gas, and the dehumidification device can remove the moisture in the corrosive gas, and the relatively dry and pure air enters the sealed space and fills the sealed space, so that The sealed space always maintains a dynamic micro-positive pressure state to the outside world, which can effectively prevent the corrosive air from entering the unit, so that the components in the unit can work in an environment similar to the air on land, and minimize the impact on the sea. Corrosion by humidity and salt spray to ensure the normal operation and corresponding life of the components in the unit.

Description of drawings

Fig. 1 is a structural schematic diagram of a specific embodiment of the wind power generating set provided by the utility model;

Among them, in Figure 1:

Tower 1, engine room 2, compartment 21, impeller 3, blade 31, ventilation pipe 4, air outlet 41, filter device 5, dehumidification device 6, blower 7, sealing ring 8.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1, Fig. 1 is a structural schematic diagram of a specific embodiment of the wind power generating set provided by the present invention.

As shown in Figure 1, the wind power generating set provided by the utility model includes a tower 1, a nacelle 2, an impeller 3 and an air intake treatment system, and both the gearbox and the generator cooler can be arranged in a relatively independent and sealed compartment at the tail of the nacelle 2. In the room 21; the tower 1, the nacelle 2, and the impeller 3 form an integral sealed space. Specifically, the connection between the nacelle 2 and the tower 1, the junction between the nacelle 2 and the impeller 3, and the root of the blade 31 are all sealed. 8 is relatively sealed, so that the tower tube 1, the nacelle 2 and the impeller 3 form a relatively independent sealed space as a whole, that is, the sealed space still has a certain gap with the outside world, and is not absolutely completely isolated from the outside world.

The air intake treatment system is used to fill the above-mentioned sealed space with dry and pure air. The air intake treatment system specifically includes a ventilation pipe 4, a filter device 5 and a dehumidification device 6. The air inlet of the ventilation pipe 4 communicates with the atmosphere, and the ventilation pipe 4 The air outlet 41 of the air outlet is connected to the above-mentioned sealed space. The filter device 5 and the dehumidification device 6 are arranged on the ventilation pipe 4. The filter device 5 is used to filter the salt spray particles in the corrosive gas at sea, and the dehumidification device 6 is used to remove the corrosive gas at sea. moisture in.

The wind turbine with this structure seals the tower 1, the nacelle 2, and the impeller 3 into an integral sealed space, and the air outlet 41 of the ventilation pipe 4 of the air intake treatment system communicates with the sealed space, and the corrosive gas at sea passes through the ventilation pipe. The air inlet of 4 enters the ventilation pipe 4, the filter device 5 can filter the salt spray particles in the corrosive gas, and the dehumidification device 6 can remove the moisture in the corrosive gas, so that relatively dry and pure air enters the sealed space, and fill the sealed space, so that the sealed space always maintains a dynamic micro-positive pressure state to the outside world, which can effectively prevent the corrosive air from entering the unit, so that the components in the unit can be in a similar land air Working in an environment that minimizes the corrosion of sea humidity and salt spray to ensure the normal operation and corresponding life of the components in the unit.

In a preferred solution, a heating device can also be arranged on the ventilation pipe 4, and the heating device can heat the air entering the above-mentioned sealed space to ensure that the air entering the above-mentioned sealed space has a suitable temperature, so as to ensure that there is no air in the above-mentioned sealed space. High temperatures may occur or a film of water may condense on the metal surface.

In the preferred solution, in order to facilitate installation and maintenance, the above-mentioned air intake treatment system can be arranged at the bottom of the tower 1, as shown in Figure 1, the filter device 5 is arranged at the air inlet of the ventilation pipe 4, and the filter device 5 is located at Outside the tower 1, the dehumidification device 6 is arranged inside the tower 1, and the air outlet 41 of the ventilation pipe 4 communicates with the tower 1. This arrangement of the air intake treatment system is convenient for installation and maintenance.

In the specific scheme, the filter device 5 can adopt primary effect filter, medium effect filter, high efficiency filter or filter cotton. All the filter devices for medium salt mist particles are within the protection scope of the present utility model.

In the preferred solution, the dehumidifier 6 can use a rotary dehumidifier, which can dehumidify the air entering the ventilation pipe 4, and can also play the role of drawing wind, and is used to move the air in the atmosphere along the ventilation pipe. 4 Introduce into the tower tube 1, control the speed of the rotary dehumidifier, and control the air intake into the tower tube 1.

Due to the obstruction of the multi-layer platform in the tower 1, it is difficult for the air in the tower 1 to enter the nacelle 2 and the impeller 3. In order to facilitate the introduction of the air in the tower 1 into the nacelle 2 and the impeller 3, the air in the tower 1 The upper platform is provided with a blower 7, the air inlet of the blower 7 is connected with the tower 1, and the air outlet 41 of the blower 7 is connected with the engine room 2, and the blower 7 can force the relatively dry and pure air in the tower 1 into the engine room 2 and In the impeller 3, secondary pressurization is realized to ensure that the pressures in the tower tube 1, the engine room 2 and the impeller 3 are equal.

In the preferred solution, the wind power generator set provided by the utility model can also be provided with a differential pressure sensor in the above-mentioned sealed space, and the differential pressure sensor is used to detect the air pressure in the above-mentioned sealed space relative to the outside world, so that it can continuously adjust the air pressure entering the tower 1 To ensure that the interior of the tower 1, the nacelle 2 and the impeller 3 always maintain a dynamic micro-positive pressure state relative to the outside world, and effectively prevent the corrosive air from entering the unit.

In a further solution, according to the air pressure detected by the differential pressure sensor, the amount of air entering the tower 1 can be controlled by controlling the rotational speed of the rotary dehumidifier.

In the above embodiments, the dehumidification device 6 is arranged inside the tower tube 1 , and the dehumidification device 6 can also be arranged outside the tower tube 1 , which is not limited by the present invention.

In the above embodiments, the filter device 5 is arranged outside the tower tube 1, and the filter device 5 may also be arranged inside the tower tube 1, which is not limited by the present invention.

In the above-mentioned embodiment, the filtering device 5 and the dehumidifying device 6 are arranged sequentially along the direction from the air inlet of the ventilation pipe 4 to the air outlet 41. The utility model does not limit the relative positions of the filtering device 5 and the dehumidifying device 6. The filtering device 5, the dehumidifying device The device 6 can also be arranged sequentially along the direction from the air outlet 41 to the air inlet of the ventilation pipe 4 .

In the above-mentioned embodiment, the dehumidification device 6 adopts a rotary dehumidifier. The utility model is not limited thereto. It can also use heating dehumidification, condensation dehumidification, chemical dehumidification agent, etc. for dehumidification. In a further solution, in order to control the introduction of air into the In the tower 1, and to facilitate the control of the air intake into the tower 1, a blower can be installed on the ventilation pipe 4, and the blower will introduce the outside air into the above tower 1, and control the air entering the tower 1 by controlling the speed of the blower. The air intake in the interior; in the preferred scheme, the air blower can be connected with the air outlet of the ventilation pipe 4, so that it is installed on the inner wall of the tower tube 1, which is convenient for the installation of the air blower.

In the above-mentioned embodiments, the air intake processing system is installed at the bottom of the tower 1, but the wind power generating set provided by the utility model is not limited thereto, and the air intake processing system can be installed at any position of the wind generating The solution that the air outlet of the gas treatment system communicates with the above-mentioned sealed space should be within the protection scope of the present utility model.

The above is only a description of the preferred implementation of the utility model. It should be pointed out that due to the limitation of literal expression, there are objectively unlimited specific structures. Under the premise of the novel principle, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (8)

1. a wind power generating set comprises tower tube, cabin and impeller, it is characterized in that, described tower tube, described cabin, described impeller form the seal space of an integral body; Also comprise the air inlet processing system, this air inlet processing system comprises ventilation duct, filtrating equipment and dehumidifier, the suction port of described ventilation duct is communicated with atmosphere, and the air outlet of ventilation duct is communicated with described seal space, and described filtrating equipment, described dehumidifier are arranged on the described ventilation duct.

2. wind power generating set according to claim 1 is characterized in that described air inlet processing system is located at the bottom of described tower tube, and the air outlet of described ventilation duct is communicated with described tower tube.

3. wind power generating set according to claim 2 is characterized in that, described dehumidifier is located in the described tower tube.

4. wind power generating set according to claim 1 is characterized in that, described dehumidifier is a rotary dehumidifier.

5. wind power generating set according to claim 1 is characterized in that, the exhaust outlet place of described ventilation duct is provided with blower.

6. according to each described wind power generating set of claim 1-5, it is characterized in that the upper platform of described tower tube is provided with blower, the suction port of this blower is communicated with described tower tube, and the air outlet of this blower is communicated with described cabin.

7. wind power generating set according to claim 1 is characterized in that, also comprises the differential pressure pickup that is used to detect in the described seal space with respect to the air pressure in the external world.

8. wind power generating set according to claim 1 is characterized in that, the joint of the joint of described cabin and described tower tube, described cabin and impeller all adopts seal ring to seal.

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