Waste oil collecting system for fan main shaft

By designing a waste oil collection system for the main shaft of a wind turbine, and using the linkage between the floating component and the limit switch, an electrical signal is automatically triggered to remind maintenance personnel to collect the waste oil. This solves the problem of inconvenient waste oil collection, realizes the automated collection and transfer of waste oil, and reduces the workload of wind turbine maintenance.

CN224261424UActive Publication Date: 2026-05-19CHINA GENERAL NUCLEAR CORP (NANAN) WIND POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA GENERAL NUCLEAR CORP (NANAN) WIND POWER CO LTD
Filing Date
2025-08-19
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In the existing technology, the waste oil generated by the main shaft of the wind turbine is inconvenient to collect, which leads to environmental pollution, equipment corrosion and resource waste, and increases the workload of wind turbine operation and maintenance.

Method used

Design a waste oil collection system for wind turbine main shaft, including a collection tank, a support frame and a monitoring structure. The system uses a floating component and a limit switch to automatically trigger an electrical signal to remind maintenance personnel to collect the waste oil. The system also reduces manual intervention through the coordinated operation of the support frame and the monitoring structure.

Benefits of technology

It has enabled the automated collection and transfer of waste oil, reducing the workload of wind turbine operation and maintenance, and lowering the risk of environmental pollution and resource waste.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to the technical field of wind power, in particular to a fan spindle waste oil collecting system which comprises a collecting barrel, a supporting frame and a monitoring structure. The supporting frame comprises a vertical rod, and the monitoring structure is detachably installed on the vertical rod. The monitoring structure comprises a mounting part, a rotating part, an upper floating part and a travel switch; the mounting part is mounted on the vertical rod, the travel switch is arranged on the mounting part, the rotating part and the supporting frame rotate, the first end of the rotating part is fixedly connected with the floating part, the floating part is arranged in the collecting barrel, and a distance is formed between the second end of the rotating part and the travel switch; the waste oil forces the upper floating piece to move upwards to drive the rotating piece to rotate, the second end of the rotating piece presses the travel switch, and the travel switch converts the pressing state into an electric signal and transmits the electric signal to the remote control system to remind that the waste oil needs to be collected. According to the device, through cooperation of the supporting frame and the monitoring structure, workers can conveniently collect and transfer waste oil generated by the draught fan main shaft, and the workload of draught fan operation and maintenance is reduced.
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Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to a waste oil collection system for wind turbine main shaft. Background Technology

[0002] With the booming development of the wind power industry, the stable operation and efficient maintenance of wind turbines, as core power generation equipment, are of paramount importance. The main shaft of the wind turbine is a key component for its operation. During operation, the bearings of the main shaft require a large amount of lubricating oil for lubrication and cooling to reduce friction and wear, thereby ensuring the smooth and efficient operation of the wind turbine.

[0003] During operation, the bearing lubrication system of the fan main shaft will generate waste oil (such as residual oil from aging, leakage, or replacement of lubricating oil). If not properly collected, it may lead to environmental pollution, equipment corrosion, or waste of resources.

[0004] In existing technology, waste oil is discharged and collected by gravity through an oil drain structure installed at the bottom of the bearing housing of the main shaft of the blower. The oil drain structure can be a collection tank, with an oil drain port at the bottom of the tank wall (slope of 5°-10°), through which the waste oil flows into the collection bucket below.

[0005] During the above operations, staff need to regularly check the amount of waste oil collected in the collection tank, which increases the workload of wind turbine maintenance. Utility Model Content

[0006] To facilitate the collection and transfer of waste oil generated by the fan main shaft, this application provides a waste oil collection system for the fan main shaft.

[0007] This application provides a waste oil collection system for the main shaft of a blower, which adopts the following technical solution:

[0008] A waste oil collection system for a wind turbine main shaft includes a collection tank, a support frame, and a monitoring structure. The collection tank has an opening at the top and is used to collect and store waste oil generated by the wind turbine main shaft. The support frame includes a vertical pole, and the monitoring structure is detachably mounted on the vertical pole. The monitoring structure includes a mounting component, a rotating component, a floating component, and a limit switch. The mounting component is detachably mounted on the vertical pole, and the limit switch is mounted on the mounting component. The rotating component rotates with the support frame, and a first end of the rotating component is fixedly connected to the floating component, which is located in the collection tank. A distance is provided between the second end of the rotating component and the limit switch. When the waste oil in the collection tank reaches the designed amount, the waste oil forces the floating component to move upward, thereby driving the rotating component to rotate. The second end of the rotating component presses the limit switch, and the limit switch converts the "pressed" state into an electrical signal and transmits it to a remote control system to remind the system that waste oil needs to be collected.

[0009] By adopting the above technical solution, when the waste oil in the collection tank reaches the designed amount, the waste oil forces the floating part to move upward, thereby driving the rotating part to rotate. The second end of the rotating part touches the limit switch, and the limit switch converts the "touch" state into an electrical signal and transmits it to the remote control system to remind the maintenance personnel to collect the waste oil.

[0010] After receiving the signal from the limit switch, the back-end maintenance personnel organize staff to collect waste oil from the wind turbine main shaft. This coordinated operation of the support frame and monitoring structure facilitates the collection and transfer of waste oil generated from the wind turbine main shaft, reducing the workload of wind turbine maintenance.

[0011] Optionally, the mounting component includes a sleeve, a cantilever rod, and a connecting bolt. The sleeve is fitted onto the upright, and one end of the cantilever rod is fixedly connected to the sleeve. The sleeve has a threaded hole, and the connecting bolt passes through the threaded hole and abuts against the upright. The limit switch is disposed on the sleeve, and the rotating component is disposed on the cantilever rod.

[0012] By adopting the above technical solution, the sleeve and the upright can be detachably connected by connecting bolts, and the sleeve and the upright can be slidably connected; thus, the staff can flexibly adjust the height of the installation parts.

[0013] Optionally, the rotating component includes a first component and a second component, the first component and the second component being disposed on both sides of the rotation point of the rotating component; the first end is disposed on the first component, the second end is disposed on the second component, and the weight of the first component is greater than the weight of the second component.

[0014] By adopting the above technical solution, the weight of the first component is greater than the weight of the second component, which makes the second end of the rotating component tend to move upward, reducing the risk that the second end of the rotating component may accidentally trigger a switch due to falling due to gravity.

[0015] Optionally, the angle between the first component and the vertical line is an acute angle.

[0016] By adopting the above technical solution, the angle between the first component and the vertical line is an acute angle, which makes the second end of the rotating component tend to move upward, reducing the risk of the second end of the rotating component accidentally triggering a switch due to falling due to gravity.

[0017] Optionally, the monitoring structure further includes an elastic element, one end of which is connected to the rotating element, and the other end of which is connected to the sleeve. The elastic element forces a clearance distance between the second end of the rotating element and the limit switch.

[0018] By adopting the above technical solution, the elastic element forces the second end of the rotating element to have a clearance distance with the limit switch, thereby reducing the risk of the second end of the rotating element accidentally triggering the switch due to gravity falling.

[0019] Optionally, the cantilever rod is provided with a limiting rod, which is used to abut against the rotating member when the second end of the rotating member presses the limit switch.

[0020] By adopting the above technical solution, the rotating part abuts against the limit rod, and the limit rod prevents the rotating part from continuing to rotate; thus reducing the risk of the rotating part damaging the limit switch.

[0021] Optionally, it also includes a waste oil bag, which is placed inside the collection bucket and is used to collect waste oil.

[0022] By adopting the above technical solution, waste oil bags are used to collect waste oil, which facilitates the subsequent transfer of waste oil by staff.

[0023] Optionally, in the vertically upward direction, the collection bucket includes a first bucket body and a second bucket body, and the first bucket body and the second bucket body are detachably connected.

[0024] By adopting the above technical solution, after the waste oil bag collects the waste oil, the staff can separate the first barrel from the second barrel so that the staff can transfer the waste oil bag containing the waste oil out of the collection barrel.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When the waste oil in the collection tank reaches the designed volume, the waste oil forces the floating component to move upward, which in turn drives the rotating component to rotate. The second end of the rotating component touches the limit switch, and the limit switch converts the "touch" state into an electrical signal and transmits it to the remote control system to remind the maintenance personnel that the waste oil needs to be collected. After receiving the signal from the limit switch, the maintenance personnel organize staff to go to the main shaft of the wind turbine to collect the waste oil. In other words, through the coordinated operation of the support frame and the monitoring structure, it is convenient for staff to collect and transfer the waste oil generated by the main shaft of the wind turbine, thereby reducing the workload of wind turbine maintenance.

[0027] 2. The elastic element forces a clearance distance between the second end of the rotating component and the limit switch to reduce the risk of the second end of the rotating component accidentally triggering the switch due to gravity falling.

[0028] 3. Use waste oil bags to collect waste oil, making it easier for staff to transfer the waste oil later. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the waste oil collection system in Example 1.

[0030] Figure 2 This is a schematic diagram of the waste oil collection system in Example 2.

[0031] Explanation of reference numerals in the attached drawings: 1. Collection bucket; 11. Bucket opening; 12. First bucket body; 13. Second bucket body; 14. Bucket; 15. Handle; 2. Support frame; 21. Base; 22. Upright pole; 3. Monitoring structure; 31. Mounting component; 311. Sleeve; 312. Cantilever rod; 313. Connecting bolt; 32. Rotating component; 321. First component; 3211. First end; 322. Second component; 3221. Second end; 33. Floating component; 34. Limit switch; 35. Elastic component; 36. Limit rod; 4. Waste oil bag. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -2 provides further detailed description of this application.

[0033] This application discloses a waste oil collection system for a fan main shaft. (Refer to...) Figure 1 The waste oil collection system for the main shaft of the blower includes a collection tank 1, a support frame 2, and a monitoring structure 3.

[0034] Reference Figure 1 The collection bucket 1 has an opening 11 at the top and is used to collect and store waste oil generated by the main shaft of the blower. The collection bucket 1 has a handle 15 on its outer periphery to facilitate the movement of the collection bucket 1 by the staff.

[0035] Reference Figure 1 The support frame 2 includes a base 21 and a pole 22. The pole 22 is fixed on the base 21, and the monitoring structure 3 is detachably installed on the pole 22.

[0036] Reference Figure 1 The monitoring structure 3 includes a mounting component 31, a rotating component 32, a floating component 33, a limit switch 34, and an elastic component 35. In this embodiment, the mounting component 31 is detachably mounted on the upright 22. The mounting component 31 includes a sleeve 311, a cantilever rod 312, and a connecting bolt 313. The sleeve 311 is fitted onto the upright 22, and one end of the cantilever rod 312 is fixedly connected to the sleeve 311. The sleeve 311 has a threaded hole, and the connecting bolt 313 passes through the threaded hole and abuts against the upright 22. The sleeve 311 is slidably connected to the upright 22, allowing the operator to flexibly adjust the height of the mounting component 31. Subsequently, the operator tightens the connecting bolt 313 to fix the mounting component 31 to the upright.

[0037] Reference Figure 1The rotating component 32 rotates with the cantilever rod 312. The rotating component 32 includes a first component 321 and a second component 322, which are located on opposite sides of the rotation point of the rotating component 32. A first end 3211 is located on the first component 321, and a second end 3221 is located on the second component 322. The weight of the first component 321 is greater than the weight of the second component 322. The first end 3211 of the rotating component 32 is fixedly connected to a floating component 33, which is located in the collection bucket 1. In this embodiment, the angle between the first component 321 and the vertical line is an acute angle.

[0038] Reference Figure 1 The limit switch 34 is mounted on the sleeve 311. There is a gap between the limit switch 34 and the second part 322 of the rotating member 32, and the contacts of the limit switch 34 are located on the movement path of the second end 3221 of the rotating member 32.

[0039] Reference Figure 1 In this embodiment, by setting the first component 321 and the second component 322, the second end 3221 of the rotating member 32 has an upward tendency, reducing the risk that the second end 3221 of the rotating member 32 may accidentally trigger a switch due to falling due to gravity.

[0040] Reference Figure 1 Furthermore, one end of the elastic element 35 is connected to the rotating element 32, and the other end of the elastic element 35 is connected to the sleeve 311. The elastic element 35 forces a clearance distance between the second end 3221 of the rotating element 32 and the limit switch 34, thereby reducing the risk of the second end 3221 of the rotating element 32 accidentally triggering the switch due to gravity. In this embodiment, the elastic element is an elastic band; in other embodiments, the elastic element can also be a spring.

[0041] Reference Figure 1 In this embodiment, a limiting rod 36 is provided on the cantilever rod 312. When the second end 3221 of the rotating member 32 touches the limit switch 34, the limiting rod 36 is used to abut against the rotating member 32.

[0042] The implementation principle of a waste oil collection system for a blower main shaft according to an embodiment of this application is as follows:

[0043] Reference Figure 1When the waste oil in collection tank 1 reaches the designed volume, the waste oil forces the floating component 33 to move upward, causing the rotating component 32 to rotate. The second end 3221 of the rotating component 32 touches the limit switch 34. The limit switch 34 converts the "touch" state into an electrical signal and transmits it to the remote control system to remind maintenance personnel to collect the waste oil. After receiving the signal from the limit switch 34, the maintenance personnel organize staff to collect the waste oil at the wind turbine main shaft. In other words, through the coordinated operation of the support frame 2 and the monitoring structure 3, it is convenient for staff to collect and transfer the waste oil generated by the wind turbine main shaft, thereby reducing the workload of wind turbine maintenance.

[0044] Reference Figure 1 Subsequently, the rotating part 32 abuts against the limiting rod 36, and the limiting rod 36 prevents the rotating part 32 from continuing to rotate; reducing the risk of the rotating part 32 damaging the limit switch 34.

[0045] Example 2

[0046] The difference between Example 2 and Example 1 is as follows:

[0047] Reference Figure 2 The waste oil collection system for the main shaft of the blower also includes a waste oil bag 4, which is placed inside the collection tank 1 and is used to collect waste oil. The waste oil bag 4 can be made of oil-resistant material, such as polypropylene. Using the waste oil bag 4 to collect waste oil facilitates subsequent transfer of the waste oil by staff.

[0048] Reference Figure 2 The collection bin 1, arranged vertically upwards, includes a first bin body 12 and a second bin body 13, which are detachably connected. In this embodiment, the first bin body 12 and the second bin body 13 are detachably connected by a snap fastener 14. Thus, after the waste oil bag 4 collects waste oil, the worker can separate the first bin body 12 from the second bin body 13 to facilitate the transfer of the waste oil bag 4 containing waste oil out of the collection bin 1.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste oil collection system for a fan main shaft, characterized in that: The system includes a collection bucket (1), a support frame (2), and a monitoring structure (3). The collection bucket (1) has an opening (11) at the top and is used to collect and store waste oil generated by the main shaft of the blower. The support frame (2) includes a pole (22), and the monitoring structure (3) is detachably mounted on the pole (22). The monitoring structure (3) includes a mounting component (31), a rotating component (32), a floating component (33), and a limit switch (34). The mounting component (31) is detachably mounted on the pole (22), and the limit switch (34) is mounted on the mounting component (31). The rotating component (32) rotates with the support frame (2). The first end (3211) of the rotating part (32) is fixedly connected to the floating part (33), which is located in the collection bucket (1). The second end (3221) of the rotating part (32) is separated from the limit switch (34). When the waste oil in the collection bucket (1) reaches the designed amount, the waste oil forces the floating part (33) to move upward to drive the rotating part (32) to rotate. The second end (3221) of the rotating part (32) touches the limit switch (34). The limit switch (34) converts the "touch" state into an electrical signal and transmits it to the remote control system to remind that the waste oil needs to be collected.

2. The waste oil collection system for the main shaft of a fan according to claim 1, characterized in that: The mounting component (31) includes a sleeve (311), a cantilever rod (312), and a connecting bolt (313). The sleeve (311) is fitted onto the upright rod (22), and one end of the cantilever rod (312) is fixedly connected to the sleeve (311). The sleeve (311) has a threaded hole, and the connecting bolt (313) passes through the threaded hole and abuts against the upright rod (22). The limit switch (34) is mounted on the sleeve (311), and the rotating component (32) is mounted on the cantilever rod (312).

3. The waste oil collection system for the main shaft of a fan according to claim 2, characterized in that: The rotating component (32) includes a first component (321) and a second component (322), the first component (321) and the second component (322) being disposed on both sides of the rotation point of the rotating component (32); the first end (3211) is disposed on the first component (321), the second end (3221) is disposed on the second component (322), and the weight of the first component (321) is greater than the weight of the second component (322).

4. The waste oil collection system for the main shaft of a fan according to claim 3, characterized in that: The angle between the first component (321) and the vertical line is an acute angle.

5. The waste oil collection system for the main shaft of a fan according to claim 2, characterized in that: The monitoring structure (3) also includes an elastic element (35), one end of which is connected to the rotating element (32), and the other end of which is connected to the sleeve (311). The elastic element (35) forces the second end (3221) of the rotating element (32) to have a clearance distance with the limit switch (34).

6. The waste oil collection system for the main shaft of a fan according to claim 2, characterized in that: The cantilever rod (312) is provided with a limiting rod (36). When the second end (3221) of the rotating member (32) presses the limit switch (34), the limiting rod (36) is used to abut against the rotating member (32).

7. The waste oil collection system for the main shaft of a wind turbine according to claim 1, characterized in that: It also includes a waste oil bag (4), which is placed inside the collection bucket (1) and is used to collect waste oil.

8. The waste oil collection system for the main shaft of a wind turbine according to claim 7, characterized in that: Along the vertical upward direction, the collection bucket (1) includes a first bucket body (12) and a second bucket body (13), and the first bucket body (12) and the second bucket body (13) are detachably connected.