WO2012027954A1

WO2012027954A1 - Wind power generation set for environment of high humidity district

Info

Publication number: WO2012027954A1
Application number: PCT/CN2011/001401
Authority: WO
Inventors: 谭闯辉
Original assignee: 广东明阳风电产业集团有限公司
Priority date: 2010-09-01
Filing date: 2011-08-22
Publication date: 2012-03-08
Also published as: CN101949359A

Abstract

A wind power generation set for environment of high humidity district includes a tower (1), a host machine (2) mounted at the top end of the tower, and impellers (3) connected with the host machine. The host machine includes a nacelle (21), a gear-box (25) connected with the impellers, and a generator (22) connected with the gear-box, wherein the gear-box and the generator are both arranged inside the nacelle. An electric motor (23) and a transformer (24) are also arranged in the nacelle, a frequency converter (11) is arranged inside the lower end of the tower. The nacelle is provided with a generator heat radiating system (4) for independently radiating heat generated by the generator and a gear-box heat radiating system (5) for independently radiating heat generated by the gear-box. A dehumidifier (6) is provided in the nacelle for lowering the inner humidity of the nacelle.

Description

Instructions Wind turbines for high humidity areas

[Technical Field]

The present invention relates to a large wind turbine, and more particularly to a wind turbine suitable for use in high humidity environments.

【Background technique】

Large wind turbines are mainly composed of wind turbine generators, impellers and towers. These wind turbines are often installed in remote, harsh environments where high humidity can be achieved with air humidity close to or above the dew point. At present, at home and abroad, conventional large-scale wind turbines work in high-humidity environments, which are prone to electrical faults, such as equipment short-circuits and poor operation. Most parts will also accelerate aging, and metal parts will rust and corrode. These problems eventually lead to abnormal operation of the fan, greatly shortened life, and may pose a safety hazard.

[Summary of the Invention]

The present invention overcomes the deficiencies of the prior art and provides a large wind turbine that can accommodate high humid environments.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

Wind turbines suitable for use in high-humidity environments, including towers and mainframes mounted at the top of the tower and impellers connected to the mainframe, including a nacelle and a gearbox connected to the impeller in the nacelle, and a gearbox The connected generator has a motor and a transformer in the engine room, and a frequency converter is arranged inside the lower end of the tower, which is characterized in that it is provided in the engine room. A generator cooling system that independently dissipates the heat of the generator and a gearbox cooling system with independent heat dissipation of the transmission, and a dehumidifier that reduces the internal temperature of the cabin is provided in the cabin.

The wind power generator for a high-humidity environment as described above is characterized in that an ultrasonic wind speed and direction damper for preventing icing and condensation is provided on the nacelle.

The wind power generator suitable for a high-humidity environment as described above is characterized in that an anti-corrosion coating is provided on the tower and the main casing.

The wind turbine generator suitable for a high-humidity environment as described above is characterized in that the generator heat dissipation system comprises a heat sink and an exhaust fan and an air exhaust duct, and the exhaust fan is connected to the exhaust duct, and the air outlet of the exhaust duct is located at Outside the cabin.

The wind power generator suitable for a high-humidity environment as described above is characterized in that the transmission heat dissipation system comprises a heat sink and an exhaust fan and an air exhaust duct, and the exhaust fan is connected to the air exhaust duct, and the air outlet of the air exhaust duct is located at Outside the cabin.

A wind power generator suitable for a high-humidity environment as described above is characterized in that the wires that are connected to the host device are bent with a drip.

The wind turbine set suitable for high humid environment as described above is characterized in that a cabin control cabinet is arranged in the engine room, a heater is arranged in the cabin control cabinet, and a tower base control cabinet is arranged inside the lower end of the tower. A heater is provided in the base control cabinet.

Compared with the prior art, the present invention has the following advantages: First, the generator and the gearbox of the present invention have independent heat dissipation systems, that is, the ventilation system for heat dissipation and cooling of the generator and the transmission adopts an independent air inlet and outlet system. The inlet and outlet air system adopts independent pipelines for ventilation. The air outlets of the pipelines are directly arranged outside the engine room, so that the inlet and outlet air do not pass through the interior of the nacelle, which is very helpful for solving the high humidity environment. Furthermore, a dehumidifier is provided in the cabin to keep the humidity in the cabin good.

In addition, an ultrasonic wind speed and direction indicator is provided outside the engine room, and the ultrasonic wind speed and direction instrument can effectively prevent icing and condensation.

[Description of the Drawings]

Figure 1 is a partial enlarged view of the host;

Figure 2 is a partial enlarged view of the host;

Figure 3 is a perspective view of the present invention.

【detailed description】

The present invention will be described in detail below with reference to the accompanying drawings:

As shown in the figure, a wind turbine suitable for use in a high-humidity environment includes a tower 1 and a main unit 2 mounted on the top of the tower 1 and an impeller 3 connected to the main unit 2. The main unit 2 includes a nacelle 21 and a gearbox 25 connected to the impeller 3 and a generator 22 connected to the transmission case 25, which are disposed in the nacelle 21. An electric motor 23 and a transformer 24 are also provided in the nacelle 21. A frequency converter 11 is provided inside the lower end of the tower 1. The rotation of the impeller 3 causes the gearbox 25 to rotate, and after the gearbox 25 is increased in speed, the output shaft of the gearbox 25 can drive the generator 22 to generate electricity.

In order to adapt to work in a high-humidity environment, a generator heat dissipation system 4 for independently dissipating heat from the generator 22 and a gearbox heat dissipation system 5 for independently dissipating the heat of the transmission 25 are provided in the nacelle 21.

Specifically, the generator heat dissipation system 4, the transmission heat dissipation system 5 includes a heat sink and an exhaust fan, and an exhaust duct, and the exhaust fan is connected to the exhaust duct, and the air outlet of the exhaust duct is disposed outside the nacelle 21. That is, the heat dissipation of the generator and the gearbox The ventilation system adopts independent air inlet and outlet systems. The air inlet and outlet systems adopt independent pipelines for ventilation. The air outlets of the pipelines are directly arranged outside the engine room, so that the air entering and leaving the air does not pass through the interior of the engine room. It is very helpful for solving high humidity environment.

As a preferred mode of the present invention, a dehumidifier 6 for reducing the internal temperature of the cabin is provided in the nacelle 21. It is good enough to maintain good humidity in the cabin.

As a preferred mode of the present invention, the wires that are connected to the host 2 device are bent with a drip. That is, the cables connected to the various types of host 2 devices have drip bends before entering these devices to prevent condensation water from flowing into these devices.

As a preferred embodiment of the present invention, the nacelle 21 is provided with an ultrasonic wind speed and direction indicator 7 for preventing icing and condensation. It can effectively prevent interference damage caused by icing and condensation.

As a preferred mode of the present invention, various types of electric components such as a motor, a transformer, a frequency converter, and a generator used in a wind power generator are used in an electric motor suitable for a high-humidity environment, and the insulation level is increased by one level.

As a preferred mode of the present invention, a nacelle control cabinet 8 is provided in the nacelle 21, and a tower base control cabinet 9 is provided inside the lower end of the tower 1. In order to prevent the two control cabinets from being wet, a heater is provided in the cabin control cabinet 8, and a heater is provided in the tower base control cabinet 9.

As a preferred mode of the present invention, a coating of an anticorrosive coating is provided on the outer casing of the tower 1 and the main assembly 2.

The startup and working mode of the invention:

1. Open or controllly open the heaters in the cabin control cabinet and the tower base cabinet, so that the temperature in these cabinets is always 5-10 °C higher than the outdoor ambient temperature _;

2. Properly turn on the dehumidifier to make the air humidity inside the cabin relatively low; 3. Before the fan starts, rotate at low speed to let the various components of the main unit pre-work preheat, and then enter the power generation state after preheating.

4. When the outdoor temperature is lower than 0 °C, observe the icing condition on the outer surface of the blade in real time, and stop immediately after allowing the amount of ice.

Claims

Claim

1. A wind power generator for a high-humidity environment, comprising a tower (1) and a host (2) mounted on the top of the tower (1) and an impeller (3) connected to the host (2), the host (2) ) including a nacelle (21) and a gearbox (25) connected to the impeller (3) in the nacelle (21), a generator (22) connected to the gearbox (25), in the nacelle

(21) is also provided with an electric motor (23) and a transformer (24), and a frequency converter (11) is arranged inside the lower end of the tower (1), characterized in that an independent generator (22) is arranged in the nacelle (21). The heat-dissipating generator cooling system (4) and the gearbox cooling system (5) with independent heat dissipation of the gearbox (25), and a dehumidifier (6) in the engine room (21) to reduce the internal temperature of the cabin.

2. A wind power generator for use in a high humidity environment according to claim 1, characterized in that an ultrasonic wind speed wind direction (7) for preventing freezing and condensation is provided on the nacelle (21).

A wind power generating unit suitable for use in a high-humidity environment according to claim 1 or 2, characterized in that the outer casing (1) and the main body (2) are provided with an anticorrosive coating.

4. The wind power generator for a high-humidity environment according to claim 1 or 2, wherein the generator heat dissipation system (4) comprises a heat sink and an exhaust fan, and an exhaust duct, and the exhaust fan is connected to the exhaust air. On the pipeline, the air outlet of the exhaust duct is located outside the nacelle (21).

The wind power generator for a high-humidity environment according to claim 1 or 2, wherein the transmission heat dissipation system (5) comprises a heat sink and an exhaust fan, and an exhaust duct, and the exhaust fan is connected to the exhaust air. On the pipe, the exhaust pipe The tuyere is located outside the nacelle (21).

6. A wind power generator set for use in a high humidity environment according to claim 1 or 2, characterized in that the wires connected to the main unit (2) are bent with a drip.

7. A wind power generator for use in a high-humidity environment according to claim 1 or 2, characterized in that a nacelle control cabinet (8) is provided in the nacelle (21), and heating is provided in the cabin control cabinet (8). a tower-based control cabinet inside the lower end of the tower (1)

(9), a heater is provided in the tower control cabinet (9).