Dust cleaning device in wind power gear box

Abstract

The utility model relates to a wind power gear box interior ash removal device which comprises a gear box body, a heater is fixedly connected to the interior of the gear box body, a filter is fixedly connected to the interior of the gear box body, and a dust removal pipe is fixedly connected to the top of the gear box body. And the right side of the dust removal pipe is fixedly connected with a collection structure. According to the dust removing device in the wind power gear box, by arranging a collecting structure, the hidden danger that generated impurities flow to all positions in the gear box body along with lubricating oil, and consequently the performance and the service life of the gear box are affected is avoided, and meanwhile, the internal temperature of the gear box body can rise due to accumulation of dust and dirt; therefore, the working temperature of hardware parts such as a gear set, all parts and bearing parts can be increased, the performance of the gear box body can be affected, the effect of removing dust in the gear box body is truly achieved, meanwhile, dust is collected, and centralized treatment of the dust is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of internal dust cleaning of wind power gearboxes, and specifically relates to a device for cleaning the inside of a wind power gearbox. Background Technique

[0002] The gearbox in a wind turbine generator set is an important mechanical component. Its main function is to transmit the power generated by the wind turbine under the action of wind to the generator and make it reach the corresponding speed. Usually, the speed of the wind turbine is very low, far from reaching the speed required for the generator to generate electricity. It must be achieved through the speed-increasing effect of the gear pair in the gearbox. Therefore, the gearbox is also called a speed-increasing box. According to the overall layout requirements of the unit, sometimes the drive shaft directly connected to the wind turbine hub (commonly known as the main shaft) is integrated with the gearbox, or the main shaft and the gearbox are arranged separately, and the structure is connected by a shrink disc device or a coupling between them. In order to increase the braking capacity of the unit, a braking device is often set at the input end or output end of the gearbox, and jointly perform combined braking on the transmission system of the unit in cooperation with the tip braking (fixed pitch wind turbine) or variable pitch braking device.

[0003] In the prior art, during the operation of the existing wind turbine generator gearbox, a lot of dust will enter the inside of the gearbox. When the gear oil lubricates the gears inside the gearbox, it will carry out the dust on the gears. After the gear oil is recycled for a long time, a large amount of dust will be mixed in it. When the gear oil enters the gearbox again to lubricate the gears, a large amount of dust will accelerate the wear between the gears and reduce the service life of the gears. For this reason, we propose a device for cleaning the inside of a wind power gearbox. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a device for cleaning the inside of a wind power gearbox, which has the advantages of thorough dust cleaning and removal of iron filings in the oil, and solves the problem of serious wear between gears caused by un-cleaned dust.

[0005] To achieve the above object, the utility model provides the following technical solution: A device for cleaning the inside of a wind power gearbox, including a gearbox body, a heater is fixedly connected inside the gearbox body, a filter is fixedly connected inside the gearbox body, a dust removal pipe is fixedly connected to the top of the gearbox body, and a collection structure is fixedly connected to the right side of the dust removal pipe;

[0006] The collection structure includes a connection cabin, a connection cabin is fixedly connected to the top of the gearbox body, a filter cabin is fixedly connected to the top of the connection cabin, a fine filter screen is fixedly connected inside the filter cabin, a coarse filter screen is fixedly connected inside the filter cabin, a machine cabin is fixedly connected inside the connection cabin, a diversion fan is fixedly connected inside the machine cabin, and a protection net plate is fixedly connected inside the machine cabin.

[0007] Furthermore, a positioning tube is fixedly connected to the outer surface of the filter, and a stepped shaft is fixedly connected to the bottom of the filter.

[0008] Furthermore, heat dissipation holes are fixedly formed inside the filter, and a magnetic bar is fixedly connected inside the filter.

[0009] Furthermore, a placement groove is fixedly formed inside the magnetic bar, and a magnetization tube is fixedly connected inside the placement groove.

[0010] Furthermore, the positioning tube is a metal hollow tube, and a plurality of arrayed window panes are formed inside it. The magnetization tube is integrally formed by magnetizing the metal hollow tube with a magnet. A stepped shaft is fixedly connected to the bottom of the positioning tube.

[0011] Furthermore, a filter plate is fixedly connected inside the filter, and a plurality of filter holes are formed inside the filter plate.

[0012] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0013] 1. In this internal dust cleaning device for a wind power gearbox, by setting a filter, a magnetic bar, a stepped shaft, and a magnetization tube, and at the same time cooperating with the stepped shaft, the structural dimensions of the positioning tube and the tail end of the heater inside the gearbox body are nearly the same. After installation, there will be no oil leakage. Through the setting of the filter, part of the iron filings in the oil in the gearbox body are filtered by the filter, and the other part is adsorbed by the magnetic bar. Thus, the iron filings in the oil are greatly reduced. After cleaning, the magnetic bar is disassembled and the heater is installed, then the gearbox body can work stably for a long time. In this way, the iron filings inside the gearbox body are removed during the test stage, achieving the effect of cleaning the gearbox body. At the same time, it also improves the cleanliness of the assembly site, increases the filtration time, and increases the situation of magnetic oil plugs.

[0014] 2. In this internal dust cleaning device for a wind power gearbox, by setting a collection structure, it is avoided that the subsequent gearbox body contacts more dust and generates wear and oxidation again or is brought in by external air. After the gearbox body runs for a period of time, it will inevitably generate some wear, or the surface of some parts will be oxidized due to the failure of the lubricating oil film and the entry of air. At the same time, it also avoids the generated impurities flowing to various parts inside the gearbox body along with the lubricating oil, thus eliminating the hidden danger of affecting the performance and life of the gearbox. At the same time, the accumulation of dust and dirt will cause the internal temperature of the gearbox body to rise, which will also cause the working temperatures of the gear set, various components, and their bearing parts and other hardware components to rise, affecting the performance of the gearbox body. It truly realizes the effect of cleaning the inside of the gearbox body and collects the dust, facilitating the centralized treatment of the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall three-dimensional view of the present utility model;

[0016] Figure 2 This is the three-dimensional exploded view of the filter of the present utility model;

[0017] Figure 3 This is the three-dimensional exploded view of the collection structure of the present utility model.

[0018] In the figure: 1. Gearbox body; 2. Heater; 3. Filter; 4. Positioning tube; 5. Step shaft; 6. Heat dissipation hole; 7. Magnetic bar; 8. Magnetization tube; 9. Dust removal tube; 10. Collection structure; 1001. Connection cabin; 1002. Filter cabin; 1003. Fine filter screen; 1004. Coarse filter screen; 1005. Machine cabin; 1006. Guide fan; 1007. Protection net plate. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] Please refer to Figures 1-3 , a dust cleaning device inside a wind power gearbox in this embodiment includes a gearbox body 1. Inside the gearbox body 1, a heater 2 is fixedly connected. Inside the gearbox body 1, a filter 3 is fixedly connected. At the top of the gearbox body 1, a dust removal tube 9 is fixedly connected. On the right side of the dust removal tube 9, a collection structure 10 is fixedly connected;

[0021] The collection structure 10 includes a connection cabin 1001. At the top of the gearbox body 1, the connection cabin 1001 is fixedly connected. At the top of the connection cabin 1001, a filter cabin 1002 is fixedly connected. Inside the filter cabin 1002, a fine filter screen 1003 is fixedly connected. Inside the filter cabin 1002, a coarse filter screen 1004 is fixedly connected. Inside the connection cabin 1001, a machine cabin 1005 is fixedly connected. Inside the machine cabin 1005, a guide fan 1006 is fixedly connected. Inside the machine cabin 1005, a protection net plate 1007 is fixedly connected;

[0022] During specific implementation, the positioning tube 4 is connected to the filter 3 through the step shaft 5. Inside the filter 3, a connection hole is provided, and a magnetic bar 7 is fixedly connected inside the connection hole. The mesh size of the coarse filter screen 1004 is 10 μm, and the mesh size of the fine filter screen 1003 is less than 10 μm.

[0023] During implementation, the following steps are carried out for operation:

[0024] 1) First, remove the heater 2 at the bottom of the gearbox, and then install the magnetic bar 7 inside the filter 3;

[0025] 2) Then, connect the oil outlet of the off-line oil filter trolley to the oil inlet of the gearbox body 1 using the oil inlet pipe connection inside the gearbox body 1, and connect the oil outlet of the off-line oil filter trolley to the oil inlet of the gearbox body 1 using the oil outlet pipe. Turn on the filter 3, and the oil undergoes filtration circulation, and some iron filings are filtered by the filter.

[0026] 3) Then, when the oil cleanliness meets the requirements, stop the filtration and cleaning, remove the magnetic bar 7 at the bottom of the gearbox, and replace it with the heater 2.

[0027] 4) Finally, start the diversion fan 1006 inside the engine room 1005 to adsorb the return journey inside the gearbox body 1. At the same time, it is adsorbed into the dust removal pipe 9 and then into the filtration chamber 1002. After that, the coarse filter screen 1004 and the fine filter screen 1003 filter and collect the dust inside the box. After the dust removal process is completed, take out the coarse filter screen 1004 and the fine filter screen 1003, and clean the dust on their meshes with a fine brush.

[0028] In summary, for the internal dust cleaning device of this wind power gearbox, by setting the filter 3, magnetic bar 7, stepped shaft 5, and magnetization tube 8, and at the same time, by setting the stepped shaft 5, the structural dimensions of the positioning tube 5 and the tail end of the heater 2 inside the gearbox body 1 are almost the same, and there will be no oil leakage after installation. Through the setting of the filter 3, part of the iron filings in the oil inside the gearbox body 1 are filtered by the filter, and the other part is adsorbed by the magnetic bar, thus greatly reducing the iron filings in the oil. After the cleaning is completed, the magnetic bar 7 is disassembled and the heater 2 is installed, then the gearbox body 1 can work stably for a long time, so as to remove the iron filings inside the gearbox body 1 during the test stage and achieve the effect of cleaning the gearbox body 1. At the same time, it also improves the cleanliness of the assembly site, increases the filtration time, and increases the situation of magnetic oil plugs.

[0029] Moreover, by setting the collection structure 10, it is avoided that the subsequent gearbox body 1 comes into contact with more dust and causes wear and oxidation or generates again due to the entry of external air. After the gearbox body 1 operates for a period of time, it will inevitably have some wear, or the surface of some parts will oxidize due to the failure of the lubricating oil film and the entry of air. At the same time, it also avoids the generated impurities flowing to various parts inside the gearbox body 1 along with the lubricating oil, thus affecting the performance and life of the gearbox. At the same time, the accumulation of dust and dirt will cause the internal temperature of the gearbox body 1 to rise, which will also cause the working temperatures of the gear set, various components, and their bearing parts to rise, which will affect the performance of the gearbox body 1. It truly realizes the effect of cleaning the inside of the gearbox body 1, and at the same time collects the dust, which is convenient for centralized treatment of the dust.

Claims

1. An internal dust cleaning device for a wind power gearbox, comprising a gearbox body (1), characterized in that: In the gearbox body (1), a heater (2) is fixedly connected inside the gearbox body (1), a filter (3) is fixedly connected inside the gearbox body (1), a dust removal pipe (9) is fixedly connected to the top of the gearbox body (1), and a collection structure (10) is fixedly connected to the right side of the dust removal pipe (9); The collection structure (10) includes a connection cabin (1001), the connection cabin (1001) is fixedly connected to the top of the gearbox body (1), a filter cabin (1002) is fixedly connected to the top of the connection cabin (1001), a fine filter screen (1003) is fixedly connected inside the filter cabin (1002), a coarse filter screen (1004) is fixedly connected inside the filter cabin (1002), a machine cabin (1005) is fixedly connected inside the connection cabin (1001), a diversion fan (1006) is fixedly connected inside the machine cabin (1005), and a protection net plate (1007) is fixedly connected inside the machine cabin (1005).

2. The internal dust cleaning device for a wind power gearbox according to claim 1, characterized in that: A positioning pipe (4) is fixedly connected to the outer surface of the filter (3), and a stepped shaft (5) is fixedly connected to the bottom of the filter (3).

3. The internal dust cleaning device for a wind power gearbox according to claim 2, characterized in that: Heat dissipation holes (6) are fixedly opened inside the filter (3), and a magnetic bar (7) is fixedly connected inside the filter (3).

4. The internal dust cleaning device for a wind power gearbox according to claim 3, characterized in that: A placement groove is fixedly opened inside the magnetic bar (7), and a magnetization pipe (8) is fixedly connected inside the placement groove thereof.

5. The internal dust cleaning device for a wind power gearbox according to claim 4, characterized in that: The positioning pipe (4) is made of a metal hollow pipe, and a number of arrayed window panes are opened inside it. The magnetization pipe (8) is integrally formed by magnetizing the metal hollow pipe with a magnet. The bottom of the positioning pipe (4) is fixedly connected to the stepped shaft (5).

6. The internal dust cleaning device for a wind power gearbox according to claim 1, characterized in that: A filter plate is fixedly connected inside the filter (3), and a number of filter holes are opened inside the filter plate.

Images