Off-line oil filtering device for wind generating set

Abstract

The utility model relates to the technical field of filtering devices, and discloses an oil offline filtering device for a wind generating set, which comprises a gear box main body, a lubricating oil tank is arranged at the top of the gear box main body, and a bottom collecting hopper is communicated with the gear box main body. A bottom collecting hopper is arranged at the bottom of the gearbox body, and an oil liquid filtering assembly used for filtering lubricating oil liquid is arranged below the bottom collecting hopper. An external storage cylinder in the oil liquid filtering assembly can store lubricating oil which contains impurities and drips after lubrication in a gear box body, and a user can start a driving motor, so that the driving motor drives an inner wall scraping rod to rub the inner wall of an oil liquid filtering cylinder through a rotating disc; and therefore, the cleanliness of filter screen holes in the oil liquid filter cartridge is ensured, the oil liquid filter cartridge can keep a continuous and efficient filtering state for impurities contained in lubricating oil, and the long-term safe use requirement of a user is met.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to an off-line oil filtering device for a wind power generator set. Background Art

[0002] A wind turbine is a device that converts wind energy into electrical energy. It has technical features such as three blades, horizontal axis, upwind direction, variable pitch, and grid-connected type. A wind turbine consists of a wind rotor, transmission system, power generation system, yaw system, hydraulic and braking system, cooling and lubrication system, nacelle cover and nacelle base, tower and foundation, control and protection system, and communication system.

[0003] After searching, the authorized Chinese patent publication number CN 213954968 U discloses an off-line oil filtering device for a wind turbine generator set, including an oil box, the top surface of the oil box is provided with an oil filling port, the bottom surface of the oil box is fixedly connected with a first conduit, the first conduit runs through the bottom surface of the oil box, the end of the first conduit is fixedly connected with a check valve box, the top surface and the bottom surface of the check valve box are provided with an oil inlet and a first oil outlet, and the oil inlet is communicated with the first conduit, the bottom of the first oil outlet is threadedly connected with a filter, the center position of the top surface of the filter is provided with a first oil port, and a plurality of second oil ports are provided around the first oil port. The utility model transports the oil in the second conduit to the third conduit through the pump box, and finally the third conduit discharges the oil back into the oil box, thereby realizing an oil circuit cycle, filtering the oil in the oil box, and after filtering, the oil can be recycled, thereby improving the service life of the oil.

[0004] The oil filtering device in the above patent still has certain shortcomings. When filtering the cooling lubricating oil, the existing wind turbine gearbox filtering device is easy to accumulate fine impurities mixed in the oil on the filter element during filtering. After a long period of accumulation, it is easy to cause clogging of the filter element holes, thereby greatly reducing the filtering effect of the filter element. The filtering effect is poor and it is difficult to meet the user's usage requirements. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an off-line oil filtering device for a wind turbine generator set, which solves the problem that, when filtering the cooling lubricating oil, the fine impurities mixed in the oil are easily accumulated on the filter element during filtration, and after a long period of accumulation, the filter element holes are easily blocked, thereby greatly reducing the filtering effect of the filter element. The filtering effect is poor and it is difficult to meet the user's usage requirements.

[0006] The utility model provides the following technical solution: an off-line oil filtering device for a wind turbine generator set, comprising a gearbox body, a lubricating oil tank is arranged on the top of the gearbox body, a bottom collecting bucket is arranged at the bottom end of the gearbox body, the bottom collecting bucket is communicated with the gearbox body, and an oil filtering assembly for filtering lubricating oil is arranged below the bottom collecting bucket;

[0007] The top end of the filter presses on the top of the filter press, and the bottom end of the filter presses on the bottom of the filter press, and the filter press has a rotation angle with the rotation of the control wheel.

[0008] Preferred technical solution 1: A liquid inlet cylinder is arranged in the middle of the top end of the top closing cover, and the top end of the liquid inlet cylinder is threadedly inserted in the middle of the bottom end of the bottom collecting bucket.

[0009] Preferred technical solution 2: The side of the external storage cylinder is connected to a drain pipe, and a valve is provided on the drain pipe.

[0010] Preferred technical solution three: a support plate is provided in the middle of the bottom mounting frame, and the support plate abuts against the bottom of the drive motor.

[0011] This solution can make it easier to install the oil filter assembly in the gear box.

[0012] Preferred technical solution four: A rotating sealing gasket is provided at the junction of the transmission shaft and the bottom of the filter cartridge base.

[0013] This solution enables the transmission shaft to be rotatably inserted in the filter cartridge base to prevent the lubricating oil from entering the external storage cartridge from leaking through the provided rotary sealing gasket.

[0014] Preferred technical solution five: the inner wall scraper rod is bent in an L-shape, and the side of the inner wall scraper rod is in contact with the inner wall of the oil filter cartridge.

[0015] This solution enables the inner wall scraper to effectively scrape off impurities adhering to the inner wall of the oil filter cartridge under the drive of the rotating disc, thereby improving the filtering efficiency of the oil filter cartridge.

[0016] Compared with the prior art, the utility model provides an off-line oil filtering device for a wind turbine generator set, which has the following beneficial effects:

[0017] (1) The utility model provides a bottom collecting hopper and an oil filter assembly at the bottom of the gearbox body, wherein the external storage cylinder in the oil filter assembly can store the lubricating oil containing impurities that drips from the gearbox body after lubrication, and the oil filter cartridge arranged in the external storage cylinder can filter the impure lubricating oil. When impurities adhere to the inner wall of the oil filter cartridge, the user can start the driving motor so that the driving motor drives the inner wall scraper rod to scrape the inner wall of the oil filter cartridge by rotating the disc, thereby ensuring the cleanliness of the filter mesh on the oil filter cartridge and ensuring that the oil filter cartridge can maintain a continuous and efficient filtering state for the impurities contained in the lubricating oil, meeting the user's requirements for long-term safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 Schematic diagram of the structural breakdown of the oil filter assembly;

[0020] Figure 3 For the utility model Figure 2 A magnified view of the structure of the middle interfering screw hole;

[0021] Figure 4 For the utility model Figure 2 An enlarged view of the structure of the scraper rod on the inner wall.

[0022] In the figure: 1. Gearbox body; 2. Lubricating oil tank; 3. Bottom collecting bucket; 4. Oil filter assembly;

[0023] 401. Bottom mounting frame; 402. Filter cartridge base; 403. Driving motor; 404. Transmission shaft; 405. Filter screen slot; 406. Resistance screw hole; 407. Resistance screw; 408. Oil filter cartridge; 409. Rotating disc; 410. Inner wall scraper rod; 411. Fixing screw; 412. External storage cartridge; 413. Top closing cover; 414. Liquid inlet cartridge; 415. Liquid discharge pipe; 416. Valve. DETAILED DESCRIPTION

[0024] See also Figure 1-4 ,

[0025] Embodiment 1: An off-line oil filtering device for a wind turbine generator set comprises a gearbox body 1, a lubricating oil tank 2 is arranged on the top of the gearbox body 1, a bottom collecting bucket 3 is arranged at the bottom end of the gearbox body 1, the bottom collecting bucket 3 is connected to the gearbox body 1, and an oil filtering assembly 4 for filtering lubricating oil is arranged below the bottom collecting bucket 3.

[0026] The oil filter assembly 4 includes a bottom mounting frame 401 arranged below the bottom collecting bucket 3, a filter cartridge base 402 is arranged at the top of the bottom mounting frame 401, a drive motor 403 is arranged at the bottom end of the filter cartridge base 402, a drive shaft of the drive motor 403 is arranged with a transmission shaft 404, the top end of the transmission shaft 404 rotates and passes through the middle of the filter cartridge base 402, a filter screen slot 405 is arranged at the top of the filter cartridge base 402, two interference screw holes 406 are symmetrically arranged on the side of the filter cartridge base 402, interference screws 407 are inserted in the interference screw holes 406, the ends of the interference screws 407 extend into the filter screen slot 405, an oil filter cartridge 408 is inserted in the filter screen slot 405, a rotating disc 409 is fixedly arranged at the top of the transmission shaft 404, and two inner wall scrapers 410 are symmetrically arranged on both sides of the top of the rotating disc 409.

[0027] The inner wall scraper rod 410 is fixedly connected to the rotating disc 409 by an inserted fixing screw 411, the outer side of the oil filter cartridge 408 is sleeved with an external storage cartridge 412, the bottom end of the external storage cartridge 412 is threadedly connected to the filter cartridge base 402, the top end of the external storage cartridge 412 is threadedly sleeved with a top closing cover 413, a liquid inlet cartridge 414 is arranged in the middle of the top end of the top closing cover 413, the top end of the liquid inlet cartridge 414 is threadedly inserted in the middle of the bottom end of the bottom collecting bucket 3, the side of the external storage cartridge 412 is connected with a drain pipe 415, and a valve 416 is arranged on the drain pipe 415.

[0028] Embodiment 2: The difference between this embodiment and embodiment 1 is that a support plate is provided in the middle of the bottom mounting frame 401 , and the support plate abuts against the bottom of the driving motor 403 .

[0029] The oil filter assembly 4 can be installed in the gear box more conveniently.

[0030] Embodiment 3: The difference between this embodiment and embodiment 1 is that a rotating sealing gasket is provided at the junction between the transmission shaft 404 and the bottom of the filter cartridge base 402 .

[0031] The transmission shaft 404 is rotatably inserted into the filter cartridge base 402 to prevent the lubricating oil entering the external storage cartridge 412 from leaking through the rotary sealing gasket.

[0032] Embodiment 4: The difference between this embodiment and embodiment 1 is that the inner wall scraper rod 410 is bent in an L-shape, and the side of the inner wall scraper rod 410 is in contact with the inner wall of the oil filter cartridge 408 .

[0033] The inner wall scraper rod 410 , driven by the rotating disc 409 , can effectively scrape away impurities adhering to the inner wall of the oil filter cartridge 408 , thereby improving the filtering efficiency of the oil filter cartridge 408 .

[0034] In this embodiment, due to the existing wind turbine gearbox filtering device, when filtering the cooling lubricating oil, the fine impurities mixed in the oil are easily accumulated on the filter element during filtering. After a long period of accumulation, it is easy to cause clogging of the filter element holes, thereby greatly reducing the filtering effect of the filter element. The filtering effect is poor and it is difficult to meet the user's usage requirements.

[0035] In summary, in a specific implementation, by setting up a lubricating oil tank 2 at the top of the gearbox body 1, the lubricating oil can be sprayed on the gear meshing points inside the gearbox body 1, so that the gearbox body 1 can run more smoothly, and the bottom collecting bucket 3 set at the bottom of the gearbox body 1 can collect the lubricating oil containing impurities dripping after lubrication, and an oil filter component 4 is set at the bottom of the bottom collecting bucket 3.

[0036] Then, the lubricating oil containing impurities concentrated in the bottom collecting bucket 3 can enter the external storage cylinder 412 through the liquid inlet cylinder 414, and an oil filter cylinder 408 is also arranged in the external storage cylinder 412, and a certain gap is left between the oil filter cylinder 408 and the inner wall of the external storage cylinder 412, and the bottom end of the oil filter cylinder 408 is inserted into the filter mesh slot 405, and is resisted by the end of the resistance screw 407, so that the oil filter cylinder 408 can be more stably installed above the filter cylinder base 402, and the lubricating liquid after filtering by the oil filter cylinder 408 can be discharged through the drain pipe 415, and a driving motor 403 is arranged on the filter cylinder base 402. When the filtered impurities adhere to the inner wall of the oil filter cylinder 408,

[0037] At this time, the user can start the drive motor 403, so that the drive motor 403 drives the rotating disc 409 to rotate through the transmission shaft 404, and two inner wall scrapers 410 are symmetrically arranged on the rotating disc 409, and the sides of the inner wall scraper rods 410 are in contact with the inner wall of the oil filter cartridge 408, so that under the drive of the rotating disc 409, the inner wall scraper rods 410 can continuously scrape off impurities adhering to the inner wall of the oil filter cartridge 408, thereby ensuring the cleanliness of the filter mesh on the oil filter cartridge 408, and ensuring that the oil filter cartridge 408 can maintain a continuous and efficient filtering state for impurities contained in the lubricating oil. In addition, since the external storage cartridge 412 is threadedly connected to the filter cartridge base 402, it is also more convenient for users to disassemble the oil filter cartridge 408, which is convenient for users to use.

Claims

1. An off-line oil filtering device for a wind turbine generator system, comprising a gearbox body (1), characterized in that: A lubricating oil tank (2) is arranged on the top of the gearbox body (1), a bottom collecting bucket (3) is arranged on the bottom end of the gearbox body (1), the bottom collecting bucket (3) is connected to the gearbox body (1), and an oil filter assembly (4) for filtering lubricating oil is arranged below the bottom collecting bucket (3); The oil filter assembly (4) comprises a bottom mounting frame (401) arranged below the bottom collecting bucket (3); a filter cartridge base (402) is arranged at the top end of the bottom mounting frame (401); a drive motor (403) is arranged at the bottom end of the filter cartridge base (402); a drive shaft of the drive motor (403) is provided with a transmission shaft (404); the top end of the transmission shaft (404) rotates through the middle of the filter cartridge base (402); a filter screen slot (405) is provided at the top end of the filter cartridge base (402); two abutment screw holes (406) are symmetrically provided on the side of the filter cartridge base (402); abutment screw rods (407) are inserted into each of the abutment screw holes (406); The end of the screw rod (407) extends into the filter slot (405), an oil filter cartridge (408) is inserted into the filter slot (405), a rotating disc (409) is fixedly arranged at the top of the transmission shaft (404), two inner wall scrapers (410) are symmetrically arranged on both sides of the top of the rotating disc (409), and the inner wall scrapers (410) are fixedly connected to the rotating disc (409) through inserted fixing screws (411), an external storage cartridge (412) is sleeved on the outer side of the oil filter cartridge (408), the bottom end of the external storage cartridge (412) is threadedly connected to the filter cartridge base (402), and a top closing cover (413) is threadedly sleeved on the top of the external storage cartridge (412).

2. The off-line oil filtering device for a wind turbine generator set according to claim 1, characterized in that: A liquid inlet cylinder (414) is provided in the middle of the top end of the top closing cover (413), and the top end of the liquid inlet cylinder (414) is threadedly inserted into the middle of the bottom end of the bottom collecting bucket (3).

3. The off-line oil filtering device for a wind turbine generator set according to claim 2, characterized in that: The side of the external storage cylinder (412) is connected to a liquid discharge pipe (415), and a valve (416) is provided on the liquid discharge pipe (415).

4. The off-line oil filtering device for a wind turbine generator set according to claim 3 is characterized in that: A support plate is provided in the middle of the bottom mounting frame (401), and the support plate abuts against the bottom of the driving motor (403).

5. The off-line oil filtering device for a wind turbine generator set according to claim 4, characterized in that: A rotating sealing gasket is provided at the junction of the transmission shaft (404) and the bottom of the filter cartridge base (402).

6. The off-line oil filtering device for a wind turbine generator set according to claim 5, characterized in that: The inner wall scraper rod (410) is bent in an L-shape, and the side edge of the inner wall scraper rod (410) is in contact with the inner wall of the oil filter cartridge (408).

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