Sand-dust separation filter

Abstract

The utility model discloses a sand-dust separation filter, which relates to the technical field of wind generating sets, and comprises a filter shell, a dust collector and a dust collector, the multiple isolation columns are arranged on the inner side of the filter shell in parallel at intervals, and a wave-shaped channel for gas circulation is formed between every two adjacent isolation columns; and the sand discharging mechanism is arranged at the bottom end of the filter shell, and the sand discharging mechanism is used for conveying the sand falling from the wave-shaped channel to the outside of the filter shell. According to the utility model, the plurality of wave-shaped metal plates are arranged in the metal shell of the filter, so that sand and dust in air can be effectively intercepted and discharged, the operation and maintenance are convenient, the purpose of reducing the content of the sand and dust in the air is achieved, and the filtering pressure of a filtering system on a wind generating set is improved; the service life of the filtering system in the wind generating set can be prolonged, the cleaning frequency of the filtering system is reduced, and therefore the operation and maintenance cost of the wind generating set is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine generator sets, in particular to a sand and dust separation filter. Background Art

[0002] At present, dust, pollen and other pollutants enter the cabin of wind turbines, which may cause equipment failure, output loss, increased energy consumption and other problems. In particular, wind turbine cabins are developing towards more integrated, precise, efficient and durable directions. Therefore, providing clean air for wind turbine cabins is a very necessary prerequisite; air intake filters are essential to keep the cabin, generator, tower and electrical equipment of wind turbines clean, especially in harsh and corrosive environments containing a lot of sand, dust, salt spray, water and moisture.

[0003] In the prior art, a wind turbine generator set generally consists of a hub 1, a speed increaser 2, a nacelle 3, an electronic control system 4, a cooling system 5, a lubrication system 7, a ventilation and filtration system 8, a shock absorption system 10, a generator 6, a base 9, and blades 11. The air ventilation and filtration system 8 installed on the wind turbine nacelle 3 adopts a two-stage filtration mode: the first-stage coarse-effect section often uses a G2-G4 primary-efficiency filter, and the second-stage medium-efficiency section often uses an F5-F9 medium-efficiency filter. However, in wind turbines used in sandstorm environments, the particulate matter filtered is generally larger-sized sand and dust, which is easily captured by metal mesh filters. If common non-woven fabrics or glass fiber filters are used, they are easily clogged. Due to the structural limitations of metal mesh filters, the purification efficiency of general metal mesh filters is difficult to exceed the G3 level. The production of metal mesh filters exceeding the G3 level not only increases the material cost significantly, but also increases the filter resistance. Taking all factors into consideration, existing wind power generation equipment has to use metal mesh filters, whose filtration level is approximately between G2 and G3. Even so, the use of metal mesh filters will bring the following problems:

[0004] Regular cleaning is required. Since the filter is installed at the air inlet outside the wind turbine cabin, especially the metal mesh filter, which is installed on the outermost side, the entire wind turbine runs 24 hours a day, so the filter is always in use. In areas with heavy sand and dust, the filter's service life will become very short. Depending on the outdoor meteorological environment, the metal mesh filter generally needs to be cleaned once a month to half a month. If there is a sandstorm, it must be cleaned immediately.

[0005] Increased maintenance and operating costs. Wind power bases are generally built in sparsely populated areas, where hundreds of wind turbines are concentrated. To fully utilize wind energy, each wind turbine is hundreds of meters apart. Moreover, the wind turbine nacelles are located more than ten meters above the ground. It takes a lot of time and money for personnel to enter the wind turbines for maintenance.

[0006] Increased resource consumption: Metal mesh filters need to be cleaned after a period of use. Thorough cleaning requires a combination of detergent and water, which undoubtedly consumes a large amount of water and produces a large amount of wastewater. In daily use, wind power bases generally perform high-pressure purges on metal mesh filters to save water and reduce resource waste. However, this results in incomplete cleaning of the metal mesh filters and consumes a large amount of manpower.

[0007] Therefore, a dust separation filter is proposed for use of a wind turbine in a dusty environment. Utility Model Content

[0008] The purpose of the present invention is to provide a sand and dust separation filter to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a sand and dust separation filter, comprising:

[0010] A filter housing, wherein the filter housing is in a U-shaped frame with an open bottom end;

[0011] A plurality of corrugated metal plates are arranged in parallel and spaced apart on the inner side of the filter housing, with corrugated channels for gas circulation formed between two adjacent corrugated metal plates;

[0012] The sand discharge mechanism is arranged at the bottom end of the filter housing and is used to transfer the sand and stones falling in the wavy channel to the outside of the filter housing.

[0013] Preferably, a plurality of isolation columns are fixedly connected to the front and back sides of the filter housing, and the plurality of isolation columns located on the same side of the filter housing are spaced apart from top to bottom.

[0014] Preferably, the top surface of the corrugated metal plate is W-shaped, a slot is provided on a side of the isolation column close to the corrugated metal plate, and the side wall of the corrugated metal plate is inserted and engaged with the slot.

[0015] Preferably, the sand removal mechanism includes a sand and dust collecting device, which is fixedly connected to the bottom end of the filter housing, and the inner side of the sand and dust collecting device is connected to the wavy channel between two adjacent wavy metal plates.

[0016] Preferably, the sand removal mechanism also includes a dust exhaust fan, which is arranged on one side of the dust collection device. A dust discharge pipe is provided between the dust exhaust fan and the dust collection device, and the dust collection device is connected to the feed port of the dust exhaust fan through the dust discharge pipe.

[0017] Preferably, the filter housing is made of metal, and is any one of stainless steel, aluminum alloy or paint plate.

[0018] Technical effects and advantages of this utility model:

[0019] The utility model utilizes the arrangement of multiple corrugated metal plates in the metal shell of the filter to effectively intercept and discharge sand and dust in the air, and has convenient operation and maintenance, thereby achieving the purpose of reducing the sand and dust content in the air, improving the filtration pressure of the filtration system on the wind turbine generator set, helping to extend the service life of the filtration system in the wind turbine generator set, reducing the frequency of cleaning the filtration system, and thus reducing the operation and maintenance costs of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a basic structural diagram of a wind turbine generator set in the prior art.

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 3 This is a partial three-dimensional cross-sectional structural diagram of the metal shell of the filter of the utility model.

[0023] In the figure: 1. Wheel hub; 2. Speed increaser; 3. Nacelle cover; 4. Electronic control system; 5. Cooling system; 6. Generator; 7. Lubrication system; 8. Ventilation and filtration system; 9. Base; 10. Shock absorption system; 11. Blades;

[0024] 100. Filter housing; 200. Corrugated metal plate; 300. Isolation column; 400. Dust collection device; 500. Dust discharge pipe; 600. Dust exhaust fan. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides Figure 1-3The sand and dust separation filter shown in the figure includes a filter housing 100, a plurality of corrugated metal plates 200 and a sand discharge mechanism. The filter housing 100 is a U-shaped frame with an open bottom end. The plurality of corrugated metal plates 200 are arranged in parallel and spaced apart on the inner side of the filter housing 100. A corrugated channel for gas circulation is formed between two adjacent corrugated metal plates 200. The sand discharge mechanism is arranged at the bottom end of the filter housing 100. The sand discharge mechanism is used to transfer the sand and stones falling in the corrugated channel to the outside of the filter housing 100. The plurality of corrugated metal plates 200 are stacked in parallel in the filter housing 100, so that a corrugated gap channel is formed between two adjacent corrugated metal plates 200. When the air carrying sand and dust is discharged from the filter housing 100, the sand discharge mechanism can effectively prevent the sand and dust from flowing out of the filter housing 100. When passing through the gap channel between the corrugated metal plates 200, the dust particles carried in the airflow will collide with the inner wall of the corrugated metal plate 200 in the corrugated gap channel during multiple deflections, thereby capturing the dust. A part of the dust particles captured by the corrugated metal plate 200 will fall into the sand discharge mechanism along the corrugated metal plate 200 under the action of gravity, while the other part will temporarily adhere to the surface of the corrugated metal plate 200. As time goes by, this part of the dust particles will accumulate. When the weight of the accumulation reaches a certain limit, it will also fall into the sand discharge mechanism under the action of gravity. The collected dust will be discharged through the sand discharge mechanism, which can prevent the dust particles from accumulating in the dust separation filter.

[0027] Furthermore, the top surface of the corrugated metal plate 200 is W-shaped, the filter housing 100 is made of metal, and the filter housing 100 is any one of stainless steel, aluminum alloy or painted plate. The filter housing 100 and the corrugated metal plate 200 are both made of metal, so that the rigidity of the two is higher, the structure is more stable, and the service life is longer. The front and back of the filter housing 100 are fixedly connected with multiple isolation columns 300. The multiple isolation columns 300 located on the same side of the filter housing 100 are arranged at intervals from top to bottom. A card slot is provided on the side of the isolation column 300 close to the corrugated metal plate 200, and the side wall of the corrugated metal plate 200 is inserted and connected with the card slot. Through the setting of the isolation column 300, the corrugated metal plate 200 located inside the filter housing 100 is positioned to keep the corrugated metal plate 200 firmly installed.

[0028] Furthermore, the sand discharge mechanism includes a dust collection device 400, which is fixedly connected to the bottom end of the filter housing 100, and the inner side of the dust collection device 400 is connected to the wavy channel between the two adjacent corrugated metal plates 200. The dust collection device 400 can adopt a cover body with a collection groove to collect dust particles falling from the side walls of the corrugated metal plates 200; the sand discharge mechanism also includes a dust exhaust fan 600, which is arranged on one side of the dust collection device 400, and a dust discharge pipe 500 is provided between the dust exhaust fan 600 and the dust collection device 400. The dust collection device 400 is connected to the feed port of the dust exhaust fan 600 through the dust discharge pipe 500. The dust particles collected in the dust collection device 400 are discharged through the dust discharge pipe 500 by the dust exhaust fan 600, so as to clean the dust particles accumulated in the dust collection device 400, thereby eliminating the tedious manual cleaning and facilitating maintenance.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sand and dust separation filter, characterized in that: include: A filter housing (100), wherein the filter housing (100) is in the shape of a U-shaped frame with an open bottom end; A plurality of corrugated metal plates (200), wherein the plurality of corrugated metal plates (200) are arranged in parallel and spaced apart on the inner side of the filter housing (100), and a corrugated channel for gas circulation is formed between two adjacent corrugated metal plates (200); A sand discharge mechanism is provided at the bottom end of the filter housing (100), and is used for transferring sand and gravel falling from the wavy channel to the outside of the filter housing (100).

2. A sand and dust separation filter according to claim 1, characterized in that: A plurality of isolation columns (300) are fixedly connected to the front and back sides of the filter housing (100), and the plurality of isolation columns (300) located on the same side of the filter housing (100) are arranged at intervals from top to bottom.

3. The sand and dust separation filter according to claim 2, characterized in that: The top surface of the corrugated metal plate (200) is W-shaped, and a slot is provided on a side of the isolation column (300) close to the corrugated metal plate (200), and the side wall of the corrugated metal plate (200) is inserted and engaged with the slot.

4. The sand and dust separation filter according to claim 3, characterized in that: The sand discharge mechanism comprises a sand and dust collecting device (400), wherein the sand and dust collecting device (400) is fixedly connected to the bottom end of the filter housing (100), and the inner side of the sand and dust collecting device (400) is connected to the wavy channel between two adjacent wavy metal plates (200).

5. The sand and dust separation filter according to claim 4, characterized in that: The sand discharge mechanism further comprises a dust discharge fan (600), the dust discharge fan (600) being arranged on one side of the sand and dust collecting device (400), a sand and dust discharge pipe (500) being arranged between the dust discharge fan (600) and the sand and dust collecting device (400), and the sand and dust collecting device (400) being connected to a feed port of the dust discharge fan (600) via the sand and dust discharge pipe (500).

6. The sand and dust separation filter according to claim 5, characterized in that: The filter housing (100) is made of metal, and the filter housing (100) is any one of stainless steel, aluminum alloy, or a baking varnish plate.

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