CN210013785U

CN210013785U - Offshore wind driven generator

Info

Publication number: CN210013785U
Application number: CN201920635776.9U
Authority: CN
Inventors: 汤城存; 郑惠哲; 刘晓枫
Original assignee: Guangdong Power Grid Co Ltd; Shantou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Shantou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-02-04
Anticipated expiration: 2029-05-06

Abstract

The application discloses offshore wind turbine, include: a wind wheel, a tower and a generator; the generator is arranged in the closed box body; an air compressor is arranged in the closed box body; a pipeline is arranged in the tower along the height direction; the first end of the pipeline is connected with an air inlet of the air compressor, and the second end of the pipeline is an air inlet and is arranged at a position with a preset height away from the sea level. The application discloses offshore wind driven generator has solved the generator under the erosion of sea surface smog, and the corrosion appears very easily and even the technical problem who damages.

Description

Offshore wind driven generator

Technical Field

The application relates to the technical field of generators, in particular to an offshore wind driven generator.

Background

The wind power generator is a generator which converts wind energy into mechanical energy and then converts the mechanical energy into electric energy. In the offshore environment, because of sufficient wind energy, more wind generating sets are generally arranged to generate electric energy by using sea wind.

However, the generator of the wind turbine generator set arranged on the sea is at a height of about the sea surface, and is very easy to rust and even damage under the erosion of the smoke on the surrounding sea surface, so that frequent maintenance is required, and the consumption of manpower and material resources is huge.

Disclosure of Invention

The application provides an offshore wind driven generator, has solved the generator under the erosion of sea surface smog, the technical problem that the corrosion appears very easily and damage even.

In view of this, the present application provides an offshore wind turbine, comprising: a wind wheel, a tower and a generator;

the generator is arranged in the closed box body;

an air compressor is arranged in the closed box body;

a pipeline is arranged in the tower along the height direction;

the first end of the pipeline is connected with an air inlet of the air compressor, and the second end of the pipeline is an air inlet and is arranged at a position away from the sea level by a preset height.

Preferably, a control device and a plurality of air compressors are arranged in the closed box body;

and the plurality of air compressors are all connected with the control device and run in turn under the control of the control device.

Preferably, an air pressure measuring device is arranged in the closed box body;

the control device is also used for stopping each air compressor if the air pressure measured by the air pressure measuring device is greater than a first preset air pressure value; and if the air pressure measured by the air pressure measuring device is lower than a second preset air pressure value, starting the air compressors in turn.

Preferably, the plurality of control compressors are controlled by the control device to run in turn each according to preset hours.

Preferably, there are two air compressors.

Preferably, the second end of the conduit is provided with a filter assembly.

Preferably, the filter assembly comprises a multi-layer dehumidification filter screen.

Preferably, the dehumidification filter screen has three layers.

Preferably, the closed box body is provided with a first access door; the outside of first business turn over door still is provided with the transition box, the transition box outside is provided with the second business turn over door.

Preferably, the position of the preset height from the sea level is a position 50 meters from the sea level.

According to the technical scheme, the method has the following advantages:

in this application, provide an offshore wind power generation machine, the generator setting is in the seal box, and the first layer that forms the salt fog with the external world is kept apart, but the seal box is difficult to accomplish totally inclosed, consequently, still is provided with air compressor in the seal box for form the malleation in the seal box, prevent the invasion of external salt fog. However, the air source to be compressed by the air compressor cannot be obtained from the sea level nearby, and the air at the sea level is also humid, so that the air inlet of the air compressor is communicated with the position which is high enough above the sea level through the pipeline arranged in the tower, and the air is taken from the high dry air source, so that the generator can be ensured to be positioned in a dry closed box body, the external humid air cannot invade, the generator is not corroded by sea level salt mist easily, and the maintenance pressure can be greatly reduced.

Drawings

FIG. 1 is a schematic structural diagram of an offshore wind turbine provided in an embodiment of the present application;

FIG. 2 is another schematic structural view of an offshore wind turbine provided in an embodiment of the present application;

FIG. 3 is a schematic view of another offshore wind turbine according to an embodiment of the present application;

reference numerals: the device comprises a closed box body 1, a tower frame 2, a pipeline 3, a filtering component 4, a transition box body 5, an air compressor 6, a control device 7, a first access door 8 and a second access door 9.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

A wind generator typically includes a rotor, a tower, and a generator. Wherein the generator is usually located at the bottom, the tower is vertically arranged in the middle, and the wind wheel is arranged at the top of the tower.

Referring to fig. 1 to 3, fig. 1 to 3 illustrate an offshore wind turbine provided by an embodiment of the present application.

According to the offshore wind driven generator provided by the embodiment of the application, the generator is arranged in the closed box body 1. The box body 1 is closed, namely, the box body which can form a seal and is relatively isolated from the outside air.

For convenient maintenance, the airtight box 1 may be provided with a first access door 8.

Further, in consideration of the possibility of moisture intrusion when the first access door 8 is opened, a transition case 5 may be provided outside the access door, and a second access door 9 may be provided outside the transition case 5. Thus, the two access doors form a double door structure, which is equivalent to providing double resistance to moisture. Of course, a dehumidifier may be further disposed in the transition box 5 to further reduce the possibility of moisture invading the generator.

Considering that the hermetic container 1 is also difficult to be completely sealed, moisture may be slowly introduced as the operation time increases. For this purpose, an air compressor 6 may be provided in the hermetic container 1. The air compressor 6 can form positive pressure in the hermetic container 1, thereby preventing intrusion of moisture well.

The source of air to be compressed by the air compressor 6 cannot be obtained from sea level at close distance, since the air at sea level is also humid. Thus, the embodiment of the present application provides an air compressor 6 whose air inlet is connected via a pipe 3 arranged in the tower 2 to a location sufficiently high above sea level so that, when air is taken, the air originates from a source of high dry air, rather than moist air at sea level.

In particular, the second end of the pipe 3 (i.e. the air inlet) may be located 50 meters from sea level.

To further ensure the drying of the compressed air source, a filter assembly 4 may be disposed at the second end of the duct 3 for filtering moisture in the air and for filtering coarse particles such as dust in the air.

The filter assembly 4 may be a multi-layer dehumidification filter, and in the embodiment of the present application, the dehumidification filter has three layers. Of course, the filter assembly 4 may be disposed in other ways, for example, the filter assembly 4 may be a dehumidifier for drying the incoming air to achieve the moisture filtering effect.

In order to improve the reliability of the positive pressure maintenance in the closed casing 1, a plurality of air compressors 6 may be provided. Therefore, when one air compressor 6 is damaged and cannot work, the spare air compressor 6 can still work to ensure positive pressure in the closed box body 1.

A control device 7 may also be provided for controlling a plurality of air compressors 6. In the embodiment of the present application, the control device 7 is used to control the plurality of air compressors 6 to operate alternately. Specifically, for example, the operation may be performed alternately for 8 hours each.

The mode that many air compressor 6 move in turn can effectively improve the holistic life of air compressor 6.

Further, an air pressure measuring device, such as an air pressure gauge, may be disposed in the sealed box 1. After the internal air pressure of the sealed box 1 is measured by the air pressure measuring device, the control device 7 can make the following judgments: if the air pressure measured by the air pressure measuring device is greater than a first preset air pressure value, stopping each air compressor 6; and if the air pressure measured by the air pressure measuring device is lower than a second preset air pressure value, starting the air compressors 6 in turn.

The first preset air pressure value may be 1.5 times of the atmospheric pressure, and when the first preset air pressure value is higher than the atmospheric pressure value, the positive pressure of the airtight box 1 is enough to resist moisture, and the air compressor 6 can stop without continuously operating. The second preset air pressure value may be 1.15 times of atmospheric pressure, and if the second preset air pressure value is lower than the atmospheric pressure value, the air compressor 6 may be started to compress air, so as to increase the air pressure value in the closed box 1.

In the embodiment of the present application, two air compressors 6 are provided in parallel in the hermetic container 1.

In the embodiment of the application, an offshore wind driven generator is provided, the generator is arranged in a closed box body 1, a first layer of salt mist with the outside is formed to be isolated, but the closed box body 1 is difficult to completely seal, and therefore two parallel air compressors 6 are further arranged in the closed box body 1 and used for forming positive pressure in the closed box body 1 and preventing the outside salt mist from invading. The source of air to be compressed by the air compressor 6 is taken at a height of 50 metres from sea level, which is much drier than air in a salt fog environment at sea level. And, at the second end of pipeline 3, i.e. the air intake, has still set up filter assembly 4 for high-altitude air can be filtered and dehumidified before entering air compressor 6.

According to the offshore wind driven generator provided by the embodiment of the application, the generator can normally operate for a long time in a dry environment, and the economic benefit of wind power generation is favorably improved. On the other hand, because the moisture-proof measure is in place, the corresponding maintenance frequency and the maintenance intensity can be reduced, and the consumption of manpower and material resources is also greatly reduced.

The terms "first," "second," "third," "fourth," and the like in the description of the application and the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An offshore wind turbine, comprising: a wind wheel, a tower and a generator;

the generator is arranged in the closed box body;

an air compressor is arranged in the closed box body;

a pipeline is arranged in the tower along the height direction;

2. An offshore wind turbine according to claim 1, wherein a control device and a plurality of said air compressors are provided within said containment box;

and the plurality of air compressors are all connected with the control device.

3. An offshore wind turbine according to claim 2, wherein an air pressure measuring device is arranged inside the containment box;

the control device is connected with the air pressure measuring device.

4. Offshore wind turbine according to claim 2, characterized in that there are in particular two air compressors.

5. Offshore wind turbine according to claim 1, characterized in that the second end of the pipe is provided with a filter assembly.

6. Offshore wind turbine according to claim 5, characterized in that said filtering assembly comprises in particular a multilayer dehumidification filter screen.

7. Offshore wind turbine according to claim 6, characterized in that the moisture removal screen is embodied with three layers.

8. An offshore wind turbine according to claim 1, wherein the containment box is provided with a first access door; the outside of first business turn over door still is provided with the transition box, the transition box outside is provided with the second business turn over door.

9. Offshore wind turbine according to claim 1, characterized in that said predetermined height from sea level is in particular a height of 50 meters from sea level.