Fine filtering device for gearbox of wind driven generator

Abstract

The utility model provides a fine filtering device for a gearbox of a wind driven generator, which comprises a filter, a motor and an oil pump, the motor serves as a power foundation of the oil pump and the filter, and the oil pump pressurizes and conveys oil to the filter; the filter comprises a filter cartridge assembly, a filter element, a fixing rod and an oil outlet, the filter element is arranged in the filter cartridge assembly, the fixing rod is arranged in the filter element, the oil outlet is formed in one end of the filter cartridge assembly, an oil groove is formed in the end, close to the oil outlet, of the fixing rod, the oil groove is communicated with the oil outlet, and the oil outlet is communicated with the gearbox; the motor is mounted on the filter cartridge assembly through the fixing assembly, the oil pump is fixed on the motor, and the oil pump is communicated with an opening of the filter cartridge assembly through a pipeline. The filter, the motor and the oil pump are integrated together, so that the filter is small in size, can be used for filtering lubricating oil of a gearbox of a wind power project and is suitable for being used in a narrow space of a wind generating set.

Description

TECHNICAL FIELD

[0001] The utility model relates to lubricating oil filtering technical field, specifically, relate to a kind of fine filtering device for wind turbine gear box. BACKGROUND

[0002] Wind turbine is the mechanical work that wind energy is converted into, mechanical work drives rotor rotation, ultimately output ac power equipment, wind turbine set is equipped with a speed-increasing gear box, filter device is more important device in gear box lubricating system, to reduce the frictional resistance between relative motion parts in gear box (mainly each stage gear and bearing), reduce the wear of parts, lubricating oil is continuously delivered to the friction surface of each moving part, forms lubricating oil film, carries out lubrication.Lubricating oil contains a certain amount of gum, impurities, moisture and additives, while in the process of gear box, metal swarf is brought in, impurities in air are entered, oil oxidation is generated, so that the impurities in lubricating oil gradually increase.If lubricating oil is not filtered, directly enters lubricating oil circuit, will bring the impurities contained in lubricating oil to the friction surface of moving pair, accelerates the wear of parts, reduces the service life of gear box.The role of filter is to separate and filter the impurities in lubricating oil, so as to improve the quality and service time of lubricating oil, reduce the friction of parts in gear box, increase the service life of gear box.

[0003] The utility model discloses a kind of lubricating oil filtering devices convenient for impurity processing, including fixed frame, motor and control switch, dehydration tank is fixedly installed on the upper side of the fixed frame, and dehydration tank's left side is provided with feed inlet, and the feed inlet is communicated with coalescing filter element at one end, the lower end of dehydration tank is provided with drain, the front side of filter box is provided with sealing door and control switch.The utility model is provided with the filter frame of rotating structure, cooperates lubricating oil filter paper, the motor in filter box is driven hose to rotate by connecting rod, so that the lubricating oil in hose is more evenly scattered on lubricating oil filter paper, in the process of motor rotation, filter frame is rotated by thin rope, so that the speed of lubricating oil through lubricating oil filter paper is accelerated, so that the mechanical impurities in lubricating oil are intercepted on lubricating oil filter paper.

[0004] At present, the volume of the filtering device for filtering lubricating oil in the market is large, but due to the narrow space where the wind turbine set is located, the filtering device is not convenient to install in the narrow space. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model aims to provide a fine filtering device for wind turbine gear box.

[0006] According to the utility model provide a kind of for wind turbine gear box's fine filtering device, including filter, motor and oil pump, the motor is the power basis of oil pump and filter, the oil pump pressurizes and transports oil to filter;

[0007] The filter includes a filter cartridge assembly, a filter element, a fixed rod, and an oil outlet. The filter element is arranged in the filter cartridge assembly. The fixed rod is arranged in the filter element. The oil outlet is arranged at one end of the filter cartridge assembly. An oil groove is arranged at one end of the fixed rod close to the oil outlet. The oil groove is connected to the oil outlet. The oil outlet is connected to the gear box.

[0008] The motor is installed on the filter cartridge assembly through a fixing assembly. The oil pump is fixed on the motor. The oil pump is connected to the opening of the filter cartridge assembly through a pipeline.

[0009] Preferably, the filter cartridge assembly includes a filter cartridge front section, a filter cartridge middle section, and a filter cartridge rear section. The filter cartridge front section is welded to the filter cartridge middle section. The filter cartridge middle section is welded to the filter cartridge rear section.

[0010] An oil inlet is welded to one side of the filter cartridge rear section. The oil inlet is connected to the opening of the filter cartridge assembly.

[0011] An oil outlet is welded to one end of the filter cartridge rear section away from the filter cartridge middle section. The fixing assembly is welded to the filter cartridge middle section.

[0012] Preferably, the inner surface of the filter cartridge rear section is provided with a positioning step. The filter element is installed in cooperation with the positioning step.

[0013] Preferably, the filter cover assembly includes a filter cover cover plate, a filter cover front section, and a filter cover joint. The filter cover cover plate is connected to the opening of the filter cartridge assembly. The filter cover joint is welded to the filter cover cover plate. The filter cover front section is welded to the filter cover joint. The filter cover front section is welded to the filter cartridge front section.

[0014] The filter cover joint is connected to a pressure gauge. A pressure gauge protection cover is sleeved outside the pressure gauge. The pressure gauge protection cover is fixed to the filter cover cover plate.

[0015] Preferably, the fixed rod is installed on the filter cover cover plate through a fixed nut. The fixed rod fixes the filter element through a pressing nut.

[0016] Preferably, the filter element is sleeved outside the fixed rod. The fixed rod and the filter element are coaxially arranged.

[0017] Preferably, a pressure measuring joint is arranged at the oil outlet.

[0018] Preferably, an adjusting ball valve is threadedly connected to the oil outlet. A plug is threadedly connected to the adjusting ball valve.

[0019] Preferably, the fixing assembly comprises a mounting bracket, a first supporting bracket, a second supporting bracket and a fixing bracket.

[0020] The filter cartridge assembly is fixed on the mounting bracket through the first supporting bracket, the fixing bracket is fixed on the mounting bracket through the second supporting bracket, and the motor is mounted on the filter cartridge assembly through the fixing bracket.

[0021] Preferably, one side of the mounting bracket is provided with an oil receiving disc, and the mounting bracket and the oil receiving disc are connected through the second supporting bracket.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] 1、 the utility model discloses a filter, motor and oil pump are integrated together, and the volume is smaller, can be used for filtering the lubricating oil of wind power project gear box, is suitable for using in the narrow space of wind driven generator set;

[0024] 2、 the utility model discloses that the fixing rod is installed on the filter cover cover plate through the fixing nut, the filter core is fixed through the compression nut, can dismantle the filter core through the compression nut and the fixing nut, and the filter core is convenient to dismantle, is favorable to the replacement maintenance of filter core;

[0025] 3、 the utility model discloses the welding of filter cover joint, filter cover front section, filter cartridge front section, filter cartridge middle section and other processing pieces, on the one hand, the key dimension can be controlled more easily, and different filter core specifications can be selected by modifying the appearance size of processing piece, to meet the requirement of different customers to filter core specification, on the other hand, the cost of small batch processing can be reduced, and the compatibility, practicality and market competitiveness of the device are greatly improved;

[0026] 4、 the utility model discloses the positioning step in filter cartridge rear section, and the fixed position of filter core can be determined through the positioning step, which is favorable to reducing the assembly requirement of workers in the production process, and the sealing performance of filter core is improved through the positioning step, and the blockage of filter core can be reflected by comparing the pressure gauge connected with the filter cover joint and the pressure gauge connected with the pressure measuring connector at the oil outlet, so that the filter core can be replaced;

[0027] 5、 the utility model discloses a pressure gauge connected with the filter cover joint, another pressure gauge connected with the pressure measuring connector at the oil outlet, and the device is set through pressure detection, which is favorable to obtaining more stable and reliable gear box lubrication;

[0028] 6,The utility model discloses through the rubber pad between motor and filter drum assembly, be favorable to the vibration influence of motor and the influence of welding filter drum weld joint greatly reduced, still be favorable to reducing the paint surface of the surface of filter drum assembly and motor surface direct contact friction of motor vibration process causes, thereby further reduce the influence to filter device appearance, reduce anticorrosive effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Other features, objects, and advantages of the utility model will become more apparent by reading the following non-restrictive embodiment made with reference to the accompanying drawings:

[0030] Figure 1 It is the three-dimensional structure schematic diagram of the utility model mainly embodies gear box precision filtration system;

[0031] Figure 2 It is the sectional structure schematic diagram of the utility model mainly embodies filter.

[0032] In the drawing:

[0033] Fixed nut 1 oil inlet 12 adjusting ball valve 22

[0034] Filter cover joint 2 filter cover cover plate 13 pressure measuring joint 23

[0035] Filter cover front section 3 pressure gauge 14 bolt 24

[0036] Filter drum front section 4 motor 15 gasket 25

[0037] Filter drum middle section 5 oil pump 16 mounting nut 26

[0038] Filter core 6 hydraulic hose 17 filter drum assembly 27

[0039] Fixed rod 7 oil receiving disc 18 compression nut 28

[0040] Filter drum rear section 8 mounting support 19 rubber pad 29

[0041] Oil outlet 9 hydraulic joint 20 first support bracket 30

[0042] Pressure gauge protection cover 10 plug 21 second support bracket 31

[0043] Fixed support 11 DETAILED DESCRIPTION

[0044] The utility model will be instructed in detail below with specific embodiments. The following examples will help the person skilled in the art to further understand the utility model, but not in any form limit the utility model. It should be noted that, for those skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0045] As Figure 1 And Figure 2 As shown in the utility model provides a kind of for wind turbine 15 gear box's fine filtering device, including filter, motor 15 and oil pump 16, motor 15 as the power base of oil pump 16 and filter, oil pump 16 pressurizes and transports oil to filter;Filter includes filter cartridge assembly 27, filter core 6, fixed rod 7 and oil outlet 9, filter core 6 is arranged in filter cartridge assembly 27, fixed rod 7 is arranged in filter core 6, oil outlet 9 is arranged in one end of filter cartridge assembly 27, and the end of fixed rod 7 close to oil outlet 9 is provided with oil groove, and oil groove is communicated with oil outlet 9, and oil outlet 9 is communicated with gear box;Motor 15 is installed on filter cartridge assembly 27 by fixed assembly, and oil pump 16 is fixed on motor 15, and oil pump 16 is communicated with the opening of filter cartridge assembly 27 by pipeline.

[0046] The utility model installs motor 15 on filter cartridge assembly 27 by fixed assembly, and oil pump 16 is installed on motor 15 and motor 15 is connected with oil pump 16 by hydraulic joint 20, and pipeline is preferably hydraulic hose 17, and oil pump 16 is communicated with the opening of filter cartridge assembly 27 by hydraulic hose 17, and oil pump 16 provides pressure, and transports oil to the opening of filter cartridge assembly 27, and the lubricating oil containing wear particles and water solution in gear box flows into filter cartridge assembly 27 from the opening of filter cartridge assembly 27, and flows into filter core 6, and after filtering by filter core 6, it flows into the oil groove of fixed rod 7, and filtered lubricating oil flows into gear box again from oil outlet 9 in oil groove, and provides relatively pure lubricating oil for gear box.The utility model is formed by integrating filter, motor 15 and oil pump 16 together, and the volume of the fine filtering device of gear box is smaller, is used to filter the lubricating oil of wind power project gear box, and is suitable for use in the narrow space of wind turbine 15 group.

[0047] Specifically, a pressure measuring connector 23 is arranged at the oil outlet 9, and a pressure gauge 14 is connected to the pressure measuring connector 23, which can be used to measure the pressure at the oil outlet 9. The oil outlet 9 is threadedly connected with a regulating ball valve 22, and the regulating ball valve 22 is threadedly connected with a plug 21. The regulating ball valve 22 is preferably a stainless steel ball valve, and the oil outlet 9 is fixedly connected with the stainless steel ball valve, and the plug 21 is fixedly connected with the stainless steel ball valve. One implementable mode is as follows: the oil outlet 9 is threadedly installed with the regulating ball valve 22. First, the thread type of the oil outlet 9 is confirmed, and a polytetrafluoroethylene raw material belt or a thread sealing glue is wrapped around the outer thread end of the regulating ball valve 22. After the thread is manually screwed to the bottom, a pipe wrench or a chain wrench is used to assist in tightening, so as to avoid excessive force from damaging the sealing surface formed by the connection between the oil outlet 9 and the regulating ball valve 22. The regulating ball valve 22 is threadedly connected with the plug 21. A hexagonal plug or a tapered plug 21 with the same thread standard as the regulating ball valve 22 is selected, and the installation method is consistent with that of the regulating ball valve 22. The threads of the regulating ball valve 22 and the plug 21 are completely engaged, and a sealing copper gasket can be additionally arranged at the end of the plug 21 to enhance the reliability of the sealing.

[0048] Specifically, the filter cartridge assembly 27 includes a filter cartridge front section 4, a filter cartridge middle section 5, and a filter cartridge rear section 8. The filter cartridge front section 4 is welded to the filter cartridge middle section 5, and the filter cartridge middle section 5 is welded to the filter cartridge rear section 8. One side of the filter cartridge rear section 8 is welded with an oil inlet 12, which is connected to the opening of the filter cartridge assembly 27. The end of the filter cartridge rear section 8 away from the filter cartridge middle section 5 is welded with an oil outlet 9. The fixing assembly is welded to the filter cartridge middle section 5. The inner surface of the filter cartridge rear section 8 is provided with a positioning step, and the filter element 6 is installed in cooperation with the positioning step.

[0049] The filter cover assembly includes a filter cover cover plate 13, a filter cover front section 3, and a filter cover connector 2. The filter cover cover plate 13 is connected in cooperation with the opening of the filter cartridge assembly 27. The filter cover connector 2 is welded to the filter cover cover plate 13. The filter cover front section 3 is welded to the filter cover connector 2 and the filter cartridge front section 4. The filter cover connector 2 is connected with the pressure gauge 14. The pressure gauge protection cover 10 is sleeved outside the pressure gauge 14, and the pressure gauge protection cover 10 is fixed to the filter cover cover plate 13.

[0050] By welding the filter cover connector 2, the filter cover front section 3, the filter cartridge front section 4, the filter cartridge middle section 5, and other processed parts, on the one hand, the key dimensions can be more easily controlled. Different specifications of filter elements 6 can be selected by modifying the outer dimensions of the processed parts to meet the requirements of different customers for the specifications of the filter elements 6. On the other hand, the cost of small-batch processing can be reduced, and the compatibility, practicality, and market competitiveness of the device are greatly improved.

[0051] The filter cover front section 3 is installed in cooperation with the filter cartridge front section 4, the filter cartridge rear section 8 is provided with a positioning step, the fixing position of the filter element 6 can be determined through the positioning step, the requirement for workers during production can be reduced, the sealing performance of the filter element 6 is improved, the blockage of the filter element 6 can be reflected through the comparison between the pressure gauge 14 connected to the pressure connection 23 at the oil outlet 9 and the pressure gauge 14 connected to the filter cover joint 2, and whether the filter element 6 needs to be replaced can be determined.

[0052] Specifically, the fixing rod 7 is installed on the filter cover cover plate 13 through the fixing nut 1, and the fixing rod 7 fixes the filter element 6 through the compression nut 28. The filter element 6 is installed in cooperation with the fixing rod 7, the filter element 6 is sleeved outside the fixing rod 7, and the fixing rod 7 is coaxially arranged with the filter element 6. The coaxially arranged fixing rod 7 and filter element 6 are more conducive to filtering lubricating oil. The compression nut 28 is threadedly connected to the fixing rod 7 to fix the filter element 6, and the compression nut 28 is threadedly connected to the upper end surface of the filter element 6. The fixing nut 1 is threadedly connected to the fixing rod 7 to fix the filter cover cover plate 13, and the fixing rod 7 is threadedly connected to the oil outlet 9.

[0053] Specifically, the fixing assembly includes a mounting bracket 19, a first support bracket 30, a second support bracket 31, and a fixing bracket 11. The filter cartridge assembly 27 is fixed to the mounting bracket 19 through the first support bracket 30, the fixing bracket 11 is fixed to the mounting bracket 19 through the second support bracket 31, and the motor 15 is installed on the filter cartridge assembly 27 through the fixing bracket 11. One side of the mounting bracket 19 is provided with an oil receiving disc 18, and the mounting bracket 19 is connected with the oil receiving disc 18 through the second support bracket 31. The oil receiving disc 18 on one side of the mounting bracket 19 is used to collect leaked oil in the fine filtering device. A feasible implementation manner is that the filter cartridge middle section 5 of the filter cartridge assembly 27 is fixed to the first support bracket 30, the mounting hole of the first support bracket 30 and the filter cartridge middle section 5 are both long circular holes, and the first support bracket 30 and the filter cartridge middle section 5 are connected and fixed through the long circular holes in cooperation with the bolts 24, the gaskets 25, and the mounting nuts 26. The long circular holes can reduce the error caused by the welding process, and at the same time, the position of the filter cartridge assembly 27 can be finely adjusted, so as to adjust the interference between the filter cartridge assembly 27 and other components during installation, thereby avoiding the occurrence of the assembly affected. Similarly, the second support bracket 31 and the oil receiving disc 18, and the fixing bracket 11 can be fixed and connected through the connection mode of the long circular holes in cooperation with the bolts 24, the gaskets 25, and the mounting nuts 26.

[0054] Another feasible implementation manner is that the first support bracket 30 is provided with a lifting eye hole, which is convenient for lifting the filter.

[0055] More specifically, the rubber pad 29 is installed between the motor 15 and the middle section 5 of the filter cartridge, which can greatly reduce the vibration of the motor 15, reduce the influence on the welding seam of the filter cartridge, reduce the adverse effects of bolt loosening caused by long-term vibration of the fastener bolt, and reduce the paint surface peeling caused by the direct contact and friction between the surface of the filter cartridge assembly 27 and the surface of the motor 15 during the vibration of the motor 15, thereby affecting the appearance of the filter device and reducing the corrosion effect.

[0056] It should be noted that the hydraulic connector 20 of the oil pump 16, the filter cover connector 2, and the pressure measuring connector 23 of the gear box fine filter device all use standard connectors, which can effectively reduce the cost of non-standard connectors, and the standard connectors have shorter processing waiting time than non-standard connectors, thereby shortening the production cycle.

[0057] The working principle and use process of the gear box fine filter device are as follows: during actual use, the motor 15 rotates counterclockwise to connect the oil pump 16 to normally operate and suck in oil, which enters the inside of the filter cartridge through the hydraulic hose 17, the oil in the inside of the filter cartridge flows into the oil groove in the fixed rod 7 through the filter core 6, after the impurities and water in the oil are filtered out, the clean oil flows back into the gear box through the oil groove of the fixed rod 7, and the circulation is formed.

[0058] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essential content of the utility model. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A fine filtration device for a gearbox of a wind turbine (15), characterized in that, Includes a filter, a motor (15) and an oil pump (16), wherein the motor (15) serves as the power source for the oil pump (16) and the filter, and the oil pump (16) pressurizes and delivers oil to the filter; The filter includes a filter cartridge assembly (27), a filter element (6), a fixing rod (7), and an oil outlet (9). The filter element (6) is disposed inside the filter cartridge assembly (27), the fixing rod (7) is disposed inside the filter element (6), and the oil outlet (9) is disposed at one end of the filter cartridge assembly (27). An oil groove is provided at the end of the fixing rod (7) near the oil outlet (9), the oil groove is connected to the oil outlet (9), and the oil outlet (9) is connected to the gearbox. The motor (15) is mounted on the filter cartridge assembly (27) by a fixing component, and the oil pump (16) is fixed on the motor (15). The oil pump (16) is connected to the opening of the filter cartridge assembly (27) through a pipe.

2. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 1, characterized in that, The filter cartridge assembly (27) includes a front section (4), a middle section (5), and a rear section (8). The front section (4) and the middle section (5) are welded together, and the middle section (5) and the rear section (8) are welded together. An oil inlet (12) is welded to one side of the rear section (8) of the filter cartridge, and the oil inlet (12) is connected to the opening of the filter cartridge assembly (27); An oil outlet (9) is welded to the end of the rear section (8) of the filter cartridge away from the middle section (5), and the fixing component is welded to the middle section (5) of the filter cartridge.

3. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 2, characterized in that, The inner surface of the rear section (8) of the filter cartridge is provided with a positioning step, and the filter element (6) is installed in conjunction with the positioning step.

4. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 2, characterized in that, It also includes a filter cover assembly and a pressure gauge protective cover. The filter cover assembly includes a filter cover plate (13), a filter cover front section (3) and a filter cover connector (2). The filter cover plate (13) is connected to the opening of the filter cartridge assembly (27). The filter cover connector (2) is welded to the filter cover plate (13). The filter cover front section (3) is welded to the filter cover connector (2). The filter cover front section (3) is welded to the filter cartridge front section (4). The filter cover connector (2) is connected to the pressure gauge (14), the pressure gauge protective cover (10) is located outside the pressure gauge (14), and the pressure gauge (14) protective cover is fixed on the filter cover plate (13).

5. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 4, characterized in that, The fixing rod (7) is installed on the filter cover plate (13) by the fixing nut (1), and the fixing rod (7) fixes the filter element (6) by the clamping nut (28).

6. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 1, characterized in that, The filter element (6) is sleeved on the outside of the fixing rod (7), and the fixing rod (7) is coaxially arranged with the filter element (6).

7. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 1, characterized in that, A pressure testing connector (23) is provided at the oil outlet (9).

8. The fine filtration device for the gearbox of a wind turbine (15) as described in claim 1, characterized in that, The oil outlet (9) is threadedly connected to a regulating ball valve (22), and the regulating ball valve (22) is threadedly connected to a plug (21).

9. The fine filtration device for a wind turbine (15) gearbox as described in claim 1, characterized in that, The fixing components include a mounting bracket (19), a first support bracket (30), a second support bracket (31), and a fixing bracket (11). The filter cartridge assembly (27) is fixed on the mounting bracket (19) by the first support bracket (30), the fixed bracket (11) is fixed on the mounting bracket (19) by the second support bracket (31), and the motor (15) is mounted on the filter cartridge assembly (27) by the fixed bracket (11).

10. The fine filtration device for a wind turbine (15) gearbox as described in claim 9, characterized in that, An oil receiving tray (18) is provided on one side of the mounting bracket (19), and the mounting bracket (19) and the oil receiving tray (18) are connected by a second support bracket (31).

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