Cabin cooling system of offshore wind driven generator

Abstract

The utility model discloses an offshore wind driven generator cabin cooling system, which relates to the field of wind driven generator cabin cooling, and comprises an air introduction section and an air purification device, the air introduction section is assembled at the front end of the air purification device, and the air purification device is used for purifying air; the air supply fan is assembled at the rear end of the air purification device, communicates with the air purification device and is used for conveying purified air; an inlet of the air conveying pipe is connected to the air supply fan; an outlet of the air conveying pipe is used for being connected with an air inlet of a cooled component. An inlet of the air exhaust pipe is used for being connected with an exhaust outlet of a cooled component. Air in the external environment is directly used for cooling, the structural arrangement is simple, the space utilization rate is high, secondary heat exchange does not exist, the heat exchange efficiency of the system is higher, and the cooling effect is more obvious.

Description

Technical Field

[0001] The utility model relates to the field of wind turbine engine room cooling, in particular to an offshore wind turbine engine room cooling system. Background Art

[0002] The wind turbine nacelle contains key equipment of the wind turbine, including a gearbox and a generator. After the wind turbine has been running for a long time, the components in the nacelle will have a high temperature, and the high temperature will affect the working quality of the parts and components. Therefore, the wind turbine nacelle and the components installed in the nacelle need to be cooled. For the sake of convenience, the cooling of the wind turbine nacelle and the components installed in the nacelle is collectively referred to as nacelle cooling.

[0003] Wind turbines used at sea contain a large amount of chloride ions and other salt in the air, which can cause serious corrosion to the equipment in the cabin. Therefore, the marine environment air introduced into the cabin needs to be treated to prevent salt spray.

[0004] At present, air-to-air coolers are usually used for cabin cooling, which have a complex structure and low space utilization, and there is secondary heat exchange, resulting in low heat exchange efficiency. Therefore, there is a need in the art to optimize cabin cooling. Utility Model Content

[0005] The purpose of the utility model is to provide an offshore wind turbine cabin cooling system in response to the above-mentioned problems, which directly utilizes the air in the external environment for cooling, has a simple structural layout, high space utilization, and no secondary exchange of heat, thereby making the system's heat exchange efficiency higher and the cooling effect more obvious.

[0006] The technical solution adopted by the utility model is as follows: A cooling system for an offshore wind turbine nacelle, comprising:

[0007] An air introduction section, used for introducing air;

[0008] An air purification device, wherein the air introduction section is softly connected to the front end of the air purification device, and the air purification device is used to purify the air;

[0009] An air supply fan is flexibly connected to the rear end of the air purification device and communicated with the air purification device to transport purified air;

[0010] An air delivery pipe, the inlet of which is connected to the air supply fan; the outlet of which is used to connect to the air inlet of the cooled component;

[0011] The air exhaust pipe has an inlet for connecting to an exhaust port of a cooled component.

[0012] Furthermore, the air introduction section is a hose, and connecting flanges are provided at both ends of the hose, wherein one connecting flange is connected to the air purification device, and the other connecting flange is used to be connected to the cabin cover.

[0013] Furthermore, the air introduction section is wide-mouthed, and its small-diameter end is connected to the air purification device.

[0014] Furthermore, the air purification device includes a shell, which has an air inlet located at the front end of the air purification device and a plurality of air outlets located at the rear end of the air purification device. From the air inlet to the air outlet, a water vapor separator, an air filter and a salt spray filter are arranged in sequence in the shell; and the plurality of air outlets are connected to an air supply fan.

[0015] Furthermore, the water vapor separator, air filter and salt mist filter are integrated into a purification processing module or form independent modules respectively.

[0016] Furthermore, the air outlet is trumpet-shaped.

[0017] Furthermore, a drain pipe is provided on the shell, and the drain pipe is provided at the bottom of the front end of the water vapor separator.

[0018] Furthermore, the air purification device is connected to the air supply fan via a hose.

[0019] Furthermore, a blocking net is provided at the air inlet of the air supply fan.

[0020] Furthermore, a check valve is provided on the air exhaust pipe, and / or the exhaust port of the air exhaust pipe is configured to be wide-mouthed to prevent rainwater from flowing back; and / or an isolation net is provided at the exhaust port of the exhaust pipe to prevent foreign matter from entering.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] The utility model directly introduces the purified air from the external environment into the cooled components, and directly cools the components using the air from the external environment, thereby eliminating the air-to-air cooler of the traditional air cooling system. Therefore, the cooling system has a simple structural layout and the space utilization efficiency in the unit cabin is high. At the same time, the secondary exchange of heat is reduced, so that the heat exchange efficiency of the system is higher and the cooling effect is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0024] Figure 1 A schematic diagram of the structural arrangement of the utility model;

[0025] Figure 2for Figure 1 An enlarged schematic diagram of

[0026] Figure 3 It is another schematic diagram of the structural arrangement of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the air purification device disclosed in the utility model;

[0028] Markings in the figure: 1-air introduction section; 2-air purification device; 21-purification treatment module; 22-water vapor separator; 23-air filter; 24-salt spray filter; 25-air outlet; 26-skeleton; 27-drain pipe; 3-air supply fan; 4-air delivery pipe; 5-air exhaust pipe; 6-check valve; 7-cooled component; 8-isolation net. DETAILED DESCRIPTION

[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0030] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0031] Example 1

[0032] like Figure 1 - Figure 4 As shown, a cooling system for an offshore wind turbine cabin includes an air introduction section 1, an air purification device 2, an air supply fan 3, an air delivery pipe 4 and an air exhaust pipe 5.

[0033] In this embodiment, the air introduction section 1 is used to introduce outside air; when the cooling system is used in a generator cabin, one end of the air introduction section 1 is connected to the air inlet of the air purification device 2, and the other end is connected to the cabin cover, so as to introduce outside air into the air purification device 2; the air purification device 2 can purify and process the introduced air.

[0034] In this embodiment, the air supply fan 3 is installed at the rear end of the air purification device 2 and is connected to the air purification device 2 for conveying purified air; the air supply fan 3 forms a negative pressure in the air purification device 2, promotes the outside air to enter the air purification device 2 through the air introduction section 1, and conveys the air in the air purification device 2 to the location of the cooled component 7; the air supply fan 3 can use a centrifugal fan or an axial flow fan to provide power for the air to flow in the system, overcome the resistance to air flow, ensure that the air can continue to move in the system, and realize the continuous cooling work.

[0035] In this embodiment, the inlet of the air delivery pipe 4 is connected to the air supply fan 3, and the outlet of the air delivery pipe 4 is used to connect to the air inlet of the cooled component 7; under the action of the air supply fan 3, the purified air enters the interior of the cooled component 7 through the air delivery pipe 4 to cool it; the inlet of the air exhaust pipe 5 is used to connect to the air outlet of the cooled component 7, and the air in the interior of the cooled component 7 is discharged through the air exhaust pipe 5.

[0036] In this embodiment, the air delivery pipe 4 and the air exhaust pipe 5 can both be in the form of a hard pipe, a soft pipe or a hard pipe-soft pipe combination, which can be flexibly arranged in full accordance with the structural shape of the interior of the cabin, thereby saving the interior space of the cabin.

[0037] To sum up, the technical solution disclosed in this embodiment is to directly introduce the air in the external environment into the cooled component 7 after purification, and use the air in the external environment for direct cooling, thereby eliminating the air-to-air cooler of the traditional air cooling system. Therefore, the cooling system has a simple structural layout and high space utilization efficiency in the unit cabin. At the same time, it reduces the secondary exchange of heat, making the system's heat exchange efficiency higher and the cooling effect more obvious.

[0038] Example 2

[0039] Based on Example 1, a specific implementation method that can be implemented is further proposed.

[0040] A feasible implementation manner, the air introduction section 1 is a hose, and connecting flanges are arranged at both ends of the hose, wherein one connecting flange is connected to the air purification device 2, and the other connecting flange is used to connect to the cabin cover, thereby realizing a soft connection between the air purification device 2 (equivalent to the entire cooling system) and the cabin cover, and being able to absorb the vibration displacement generated during the operation of the unit, and / or the vibration displacement generated by the air supply fan 3 carrying the air purification device 2 during operation, thereby avoiding the cabin cover and the air purification device 2 from being torn and damaged due to vibration.

[0041] A feasible implementation manner is that the air introduction section 1 is wide-mouthed, and its small-diameter end is connected to the air purification device 2. The wide-mouthed shape makes the air introduction section 1 have an outward slope, which can effectively prevent rainwater from entering and protect related equipment in the system; preferably, a wide-mouthed slope can be set only at the bottom of the air introduction section 1.

[0042] Example 3

[0043] Based on any one of the implementations in Examples 1-2, a feasible implementation is further proposed.

[0044] A feasible implementation method is as follows: Figure 2As shown, the air purification device 2 includes a shell, the shell has an air inlet located at the front end of the air purification device 2 and a plurality of air outlets 25 located at the rear end of the air purification device 2, from the air inlet to the air outlet 25, a water vapor separator 22, an air filter 23 and a salt mist filter 24 are arranged in sequence in the shell; the plurality of air outlets 25 are connected to the air supply fan 3.

[0045] In this embodiment, the water vapor separator 22 is a multi-layer honeycomb mesh structure, which uses inertia to separate the water entrained in the air; the air filter 23 can effectively filter large particles of impurities in the air; the salt spray filter 24 uses a water-resistant filter element, which can effectively filter tiny particles and salt spray particles in the air, and the salt spray filtration efficiency is greater than 95%. After the outside air enters the shell of the air purification device 2, under the action of the air supply fan 3, it passes through the water vapor separator 22, the air filter 23 and the salt spray filter 24 in sequence, and the air is dried, filtered, and desalted, so as to avoid the introduction of slag dust, water vapor, and salt spray into the cooled component 7, thereby ensuring the operating life of the cooling system and the cooled component 7.

[0046] Further, such as Figure 3-Figure 4 As shown, the water vapor separator 22, the air filter 23 and the salt spray filter 24 are integrated into a purification treatment module 21 or respectively form independent modules to achieve modularization. The number of purification treatment modules 21 or the number of different independent modules can be flexibly selected according to different air volumes; at the same time, the modular design, multiple purification treatment modules 21 and / or independent modules are assembled on the skeleton 26 to form an air purification device 2, and the modules are assembled on the skeleton 26 by pulling and pulling. The installation process is simple and convenient, which greatly reduces the time and labor intensity of operation and maintenance, and also saves the inspection and maintenance space in the cabin.

[0047] It should be noted that the shell of the air purification device 2 is installed on the frame 26, and a plurality of purification processing modules 21 and / or independent modules are assembled in the shell.

[0048] A feasible implementation manner is that the air outlet 25 is trumpet-shaped, the large diameter end of the trumpet-shaped air outlet 25 is located in the air purification device 2, and the small diameter section is connected to the air supply fan 3; the air in the air purification device 2 is evenly rectified before entering the air supply fan 3 to ensure that the local resistance loss of the flow is reduced.

[0049] A feasible implementation manner, a drain pipe 27 is provided on the shell, and the setting position of the drain pipe 27 is located at the front end bottom of the water vapor separator 22. The water vapor filtered by the water vapor separator 22 will condense at the front end of the water vapor separator 22. The setting of the drain pipe 27 can timely drain the water blocked during the operation of the air purification device 2, thereby improving the filtration efficiency of the air purification device 2, and at the same time can effectively prevent the filter element from being immersed in water, thereby improving the service life of the filter.

[0050] Example 4

[0051] like Figure 1 , Figure 3 As shown, based on any one of the implementation methods in Examples 1-3, a feasible specific implementation method is further proposed.

[0052] In a feasible implementation manner, the air purification device 2 is connected to the air supply fan 3 via a hose, so as to minimize the vibration transmitted to the air purification device 2 when the air supply fan 3 is running, thereby ensuring the safe operation of the air purification device 2.

[0053] Furthermore, a blocking net is provided at the air inlet of the air supply fan 3 to effectively protect the centrifugal fan.

[0054] Furthermore, a check valve 6 is provided on the air exhaust pipe 5, which can effectively prevent the external untreated high-salt fog ambient air from entering the system cooled components 7 through the exhaust pipe when the cooling system is shut down, thereby minimizing the equipment corrosion loss during the shutdown period.

[0055] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. An offshore wind turbine nacelle cooling system, characterized in that: include: An air introduction section (1) for introducing air; An air purification device (2), wherein the air introduction section (1) is flexibly connected to the front end of the air purification device (2), and the air purification device (2) is used to purify air; An air supply fan (3) is flexibly connected to the rear end of the air purification device (2), is communicated with the air purification device (2), and is used to transport purified air; An air delivery pipe (4), the inlet of which is connected to the air supply fan (3); the outlet of which is used to connect to the air inlet of the cooled component (7); An air exhaust pipe (5) has an inlet for connecting to an exhaust port of a cooled component (7).

2. The cooling system according to claim 1, characterized in that: The air introduction section (1) is a hose with connecting flanges at both ends, one of which is connected to the air purification device (2) and the other is used to connect to the cabin cover.

3. The cooling system according to claim 1, characterized in that: The air introduction section (1) is wide-mouthed, and its small-diameter end is connected to the air purification device (2).

4. The cooling system according to claim 1, characterized in that: The air purification device (2) comprises a shell, the shell having an air inlet located at the front end of the air purification device (2) and a plurality of air outlets (25) located at the rear end of the air purification device (2), and a water vapor separator (22), an air filter (23) and a salt mist filter (24) are arranged in sequence in the shell from the air inlet to the air outlets (25); and the plurality of air outlets (25) are connected to an air supply fan (3).

5. The cooling system according to claim 4, characterized in that: The water vapor separator (22), the air filter (23) and the salt mist filter (24) are integrated into a purification processing module (21) or are respectively formed into independent modules.

6. The cooling system according to claim 4, characterized in that: The air outlet (25) is trumpet-shaped.

7. The cooling system according to claim 4, characterized in that: The shell is provided with a drain pipe (27), and the drain pipe (27) is arranged at the front bottom of the water vapor separator (22).

8. The cooling system according to any one of claims 1 to 7, characterized in that: The air purification device (2) is connected to the air supply fan (3) via a hose.

9. The cooling system according to any one of claims 1 to 7, characterized in that: A blocking net is provided at the air inlet of the air supply fan (3).

10. The cooling system according to any one of claims 1 to 7, characterized in that: The air outlet pipe (5) is provided with a check valve (6), or / and the outlet of the air outlet pipe (5) is configured to be wide-mouthed to prevent rainwater from flowing back; or / and the outlet of the air outlet pipe (5) is provided with an isolation net (8) to prevent foreign matter from entering.

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