Lubricating device and wind power gear box
By setting up a device to adjust the lubricant oil level in the wind power gear box, the problem of lack of lubrication in the wind power gear box when stationary or idling is solved, intelligent adjustment of lubricant is achieved, reducing the risk of oil leakage and extending the use of the equipment life.
Patent Information
- Application Number
- CN202420948004.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-06
AI Technical Summary
The wind power gear box lacks lubrication under stationary or idling conditions, resulting in the bearing being in a dry friction state, affecting performance and life.
A lubrication device is designed to adjust the liquid level of the lubricating oil by setting a casing and pushing mechanism in the wind power gear box to ensure that the liquid level is lowered under normal working conditions to avoid oil leakage, and to lift the liquid when converted to no-load conditions to lubricate the bearing.
It effectively reduces the risk of low-speed oil leakage in wind power gearboxes, and ensures bearing lubrication under stationary or idling conditions, extending the service life of the equipment.
Smart Images
Figure CN222163508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind power equipment, in particular to a lubrication device and a wind power gear box. Background Art
[0002] In the field of wind power, a wind turbine generator set includes an impeller, a wind turbine gearbox and a generator. The wind turbine gearbox is connected between the impeller and the generator to convert wind energy on the impeller side into electrical energy; therefore, the wind turbine gearbox is an important component of the operation of the wind turbine.
[0003] The transmission shaft system in the wind turbine gearbox in the prior art includes a high-speed stage and a low-speed stage. In order to reduce the risk of oil leakage on the low-speed stage side, the liquid level of the lubricating oil in the wind turbine gearbox is relatively low, and the liquid level is usually set below the bearing on the low-speed stage side. In normal use, the motor pump is turned on and supplies oil to the bearing of the wind turbine gearbox to lubricate the bearing and other structures. However, when the wind turbine is in a stationary or idling condition, the transmission shaft system inside the wind turbine gearbox is stationary, and the motor pump is in a non-oil supply state. The bearing here is not lubricated with lubricating oil for a long time, which will cause the bearing to be in a dry friction state, and thus seriously affect the performance and life of the bearing at this position.
[0004] Therefore, there is an urgent need for a lubrication device and a wind power gearbox to solve the above technical problems. Utility Model Content
[0005] One purpose of the utility model is to provide a lubrication device, which can realize the raising and lowering of the lubricating oil level, reduce the risk of oil leakage at the low speed stage of the gear box, and ensure the lubrication of the bearing under static or idling conditions.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A lubrication device is used to adjust the lubricating oil level of a wind turbine gearbox. The lubrication device comprises:
[0008] A housing is disposed in the oil chamber of the wind turbine gearbox, and one end of the housing is provided with an opening to communicate with the lubricating oil;
[0009] The pushing mechanism is sealed and slidably arranged in the above-mentioned shell to divide the above-mentioned shell into an oil containing chamber and an oil separating chamber. The above-mentioned opening is provided at one end of the above-mentioned oil containing chamber. The above-mentioned pushing mechanism is configured to move toward or away from the above-mentioned opening to adjust the oil containing volume of the above-mentioned oil containing chamber.
[0010] Optionally, the above-mentioned pushing mechanism includes:
[0011] A movable member is sealed and slidably disposed in the housing to divide the housing into the oil containing chamber and the oil separating chamber;
[0012] A pushing member is disposed in the oil separation chamber, and an output end of the pushing member is connected to the movable member so as to push the movable member to move toward or away from the opening.
[0013] Optionally, a sealing member is provided between a side of the movable member facing the opening and an inner wall of the shell.
[0014] Optionally, the pushing member is a cylinder, a hydraulic cylinder or a linear motor.
[0015] Optionally, a communication port is provided on a side wall of the oil separation chamber, and the communication port is connected to the outside of the box body of the wind power gearbox to connect the oil separation chamber with the outside.
[0016] Optionally, a control structure is further included, and the control structure is electrically connected to the driving mechanism.
[0017] Optionally, a wire opening is provided on the side wall of the oil-isolating chamber, and the wire opening is used to pass the wire so as to electrically connect the control structure to the driving mechanism.
[0018] Optionally, a fixing piece is further included, and the fixing piece is arranged on the outer wall of the shell so as to be fixedly connected to the box body of the wind power gearbox.
[0019] Another object of the utility model is to provide a wind power gearbox, which can realize the raising and lowering of the lubricating oil level in the oil chamber, reduce the risk of oil leakage at the low speed stage itself, and ensure the lubrication of the bearings under static or idling conditions.
[0020] To achieve this purpose, the utility model adopts the following technical solutions:
[0021] A wind power gearbox comprises a box body and a lubricating device as described in any of the above schemes, wherein the lubricating device is arranged in an oil cavity of the box body.
[0022] Optionally, the lubrication device is sealingly connected to the bottom wall or the side wall of the box.
[0023] Beneficial effects of the utility model:
[0024] The utility model provides a lubrication device and a wind turbine gear box. The lubrication device is arranged in the wind turbine gear box. Under normal working conditions of the wind turbine gear box, a pushing mechanism moves away from an opening, so that the oil capacity of the oil containing chamber increases, and then more lubrication oil can be stored in the lubrication device, so as to reduce the liquid level of the lubrication oil in the wind turbine gear box and avoid the risk of oil leakage. When the wind turbine gear box is in a no-load working condition, that is, it is in a stationary or idling working condition, during the conversion process of the above working conditions, the pushing mechanism moves toward the opening, so that the oil capacity of the oil containing chamber decreases, and the lubrication oil flows into the wind turbine gear box to increase the liquid level of the lubrication oil in the wind turbine gear box, and then the bearing on the low-speed stage side of the wind turbine gear box is lubricated, thereby improving the service life of the wind turbine gear box using the lubrication device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is an axonometric diagram of a lubrication device in an optional embodiment of the utility model from one viewing angle;
[0026] Figure 2 It is an axonometric diagram of the lubrication device in another optional embodiment of the utility model;
[0027] Figure 3 is a cross-sectional view of a lubrication device in an optional embodiment of the utility model;
[0028] Figure 4 It is a partial cross-sectional view of a lubricating device installed on a box body in an optional embodiment of the utility model;
[0029] Figure 5 It is an axonometric diagram of a lubrication device from one viewing angle in another optional embodiment of the utility model;
[0030] Figure 6 is an axonometric diagram of a lubricating device from another perspective in another optional embodiment of the utility model;
[0031] Figure 7 is a cross-sectional view of a lubrication device in another optional embodiment of the utility model;
[0032] Figure 8 It is a partial cross-sectional view of a lubrication device installed on a box body in another optional embodiment of the utility model.
[0033] In the figure:
[0034] 10. Shell; 11. Oil containing chamber; 12. Oil separating chamber; 121. Communication port; 122. Wire port; 13. Opening;
[0035] 20. Propelling mechanism; 21. Moving part; 22. Propelling part;
[0036] 30. sealing member; 40. fixing member; 50. sealing tube;
[0037] 100. Box body; 200. Sealing structure; 300. Fasteners. DETAILED DESCRIPTION
[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0042] Refer to the following Figures 1 to 8 The utility model introduces a lubrication device and a wind power gear box.
[0043] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7Specifically, the lubricating device is used to adjust the lubricating oil level of the wind power gearbox, and the lubricating device includes a shell 10 and a driving mechanism 20; wherein the shell 10 is arranged in the oil chamber of the wind power gearbox, and an opening 13 is provided at one end of the shell 10 to communicate with the lubricating oil; the driving mechanism 20 is sealed and slidably arranged in the shell 10 to divide the shell 10 into an oil containing chamber 11 and an oil separating chamber 12, and an opening 13 is provided at one end of the oil containing chamber 11 to contain the lubricating oil, and the driving mechanism 20 is configured to move toward or away from the opening 13 to adjust the oil containing volume of the oil containing chamber 11, thereby realizing the adjustment of the lubricating oil level in the wind power gearbox connected thereto.
[0044] The lubrication device in the present embodiment is provided with a lubrication device in the wind turbine gearbox. Under normal working conditions of the wind turbine gearbox, the pushing mechanism 20 moves away from the opening 13, so that the oil capacity of the oil chamber 11 increases, and more lubricating oil can be stored in the lubrication device to reduce the liquid level of the lubricating oil in the wind turbine gearbox and avoid the risk of oil leakage. When the wind turbine gearbox is in a no-load condition, that is, it is in a stationary or idling condition, during the conversion process of the above working conditions, the pushing mechanism 20 moves toward the opening 13, so that the oil capacity of the oil chamber 11 decreases, and the lubricating oil flows into the wind turbine gearbox to increase the liquid level of the lubricating oil in the wind turbine gearbox, thereby realizing lubrication of the bearings on the low-speed stage side of the wind turbine gearbox, thereby improving the service life of the wind turbine gearbox using the lubrication device.
[0045] Specifically, the pushing mechanism 20 has a first working position and a second working position. The first working position is the position of the pushing mechanism 20 when the wind turbine gearbox is in a normal working condition, and the second working position is the position of the pushing mechanism 20 when the wind turbine gearbox is in a no-load condition.
[0046] During operation, when the wind turbine gearbox is converted from a normal working condition to a no-load working condition, the pushing mechanism 20 moves toward the opening 13, and gradually moves from the first working position to the second working position and then stops moving. At this time, most of the lubricating oil in the oil containing chamber 11 is pushed into the wind turbine gearbox to increase the liquid level of the lubricating oil in the wind turbine gearbox; when the wind turbine gearbox is converted from a no-load working condition to a normal working condition, the pushing mechanism 20 moves away from the opening 13, and gradually moves from the second working position to the first working position and then stops moving. At this time, part of the lubricating oil in the wind turbine gearbox is pushed into the oil containing chamber 11 to lower the liquid level of the lubricating oil in the wind turbine gearbox.
[0047] Please continue to refer to Figure 2 , Figure 3 , Figure 6 and Figure 7In this embodiment, the pushing mechanism 20 includes a movable part 21 and a pushing part 22; the movable part 21 is arranged in the shell 10 to divide the shell 10 into an oil containing chamber 11 and an oil separating chamber 12; the pushing part 22 is arranged in the oil separating chamber 12, and the output end of the pushing part 22 is connected to the movable part 21, so as to push the movable part 21 to move toward or away from the opening 13, so as to realize the adjustment of the oil containing volume of the oil containing chamber 11.
[0048] Optionally, the pusher 22 is a cylinder, a hydraulic cylinder or a linear motor, which can realize the pushing effect on the movable member 21. It is understandable that in other embodiments, the pusher 22 can also be other structures that can realize the pushing effect on the movable member 21, which is not specifically limited here.
[0049] Furthermore, a sealing member 30 is provided between a side of the movable member 21 facing the opening 13 and an inner wall of the housing 10 to achieve a sealing arrangement between the movable member 21 and the housing 10 .
[0050] Furthermore, the lubrication device also includes a control structure (not shown in the figure), which is electrically connected to the driving mechanism 20. Specifically, the control structure is electrically connected to the driving member 22 to achieve control over the start and stop of the driving member 22, thereby achieving the driving of the movable member 21 by the driving member 22 when the wind turbine gearbox switches between normal operating conditions and no-load operating conditions.
[0051] Optionally, the control structure may adopt the control mechanism of the wind turbine generator set itself, which is not specifically limited here.
[0052] Please refer to Figure 1 and Figure 5 Specifically, a wire opening 122 is opened on the side wall of the oil-water separator chamber 12, and the wire opening 122 is used to pass a wire so that the control structure is electrically connected to the pushing member 22 of the pushing mechanism 20, thereby realizing the control structure's control over the start and stop of the pushing member 22.
[0053] Furthermore, a connecting port 121 is provided on the side wall of the oil separator chamber 12, and the connecting port 121 is connected to the outside of the wind turbine gearbox body 100 to connect the oil separator chamber 12 with the outside, so that the air pressure in the oil separator chamber 12 remains consistent with the external atmospheric pressure, thereby avoiding the problem that the air pressure in the oil separator chamber 12 is inconsistent with the air pressure in the wind turbine gearbox, causing the movable part 21 to be self-propelled and damaged.
[0054] Furthermore, the lubricating device also includes a fixing member 40 , which is disposed on the outer wall of the housing 10 for fixed connection with the box body 100 of the wind turbine gearbox, thereby achieving a fixed connection between the lubricating device and the box body 100 .
[0055] Please refer to Figures 1 to 4In an optional embodiment, the fixing member 40 is disposed on the outer periphery of a side wall of the housing 10, so that the lubricating device is fixedly connected to the side wall of the wind turbine gearbox housing 100. At this time, the communication port 121 and the wire port 122 are both disposed on the side wall where the fixing member 40 is disposed, so as to realize external connection.
[0056] Please refer to Figures 5 to 8 In another optional embodiment, the fixing member 40 is disposed at the bottom of one side wall of the housing 10 and extends toward a side away from the housing 10, so that the lubricating device is fixedly connected to the bottom wall of the wind turbine gearbox housing 100. In this case, the communication port 121 and the wire port 122 are both disposed at the top or side wall of the isolation chamber to achieve external connection.
[0057] Specifically, the lubrication device also includes two sealing tubes 50, one end of the two sealing tubes 50 is respectively connected to the sealed connecting port 121 and the wire port 122, and the other end is sealed and extends out of the side wall of the box body 100 of the wind turbine gearbox to achieve the connection between the connecting port 121 and the external atmosphere, and to realize the function of passing the wire port 122 inside to connect the driving member 22 and the control structure.
[0058] Optionally, the two sealing tubes 50 may be arranged side by side or staggered, which is not specifically limited here.
[0059] Please refer to Figure 4 and Figure 8 This embodiment also provides a wind turbine gearbox, which includes a box body 100 and a lubrication device as described in any of the above schemes. The lubrication device is arranged in the oil chamber of the box body 100, which can reduce the risk of oil leakage at the low speed stage of the gearbox and ensure the lubrication of the bearing under no-load conditions.
[0060] It should be noted that the lubrication device can be arranged on the high-speed side or the low-speed side of the box 100, and can adjust the lubricating oil level in the box 100. The specific setting can be based on actual needs and positions, and is not specifically limited here.
[0061] Optionally, the lubrication device is sealed and connected to the bottom wall or the side wall of the box body 100, which can be set according to actual needs and positions and is not specifically limited here.
[0062] In an optional embodiment, when the lubrication device is sealed and connected to the side wall of the box body 100, the lubrication device is sealed and penetrated through the side wall of the box body 100, the fixing member 40 is located on the outside of the box body 100, and a sealing structure 200 is sandwiched between the fixing member 40 and the box body 100, and the fixing member 40 and the side wall of the box body 100 are locked by the fastener 300 to realize the sealed connection of the lubrication device to the side wall of the box body 100.
[0063] In another optional embodiment, when the lubrication device is sealed to the bottom wall of the box body 100, a threaded groove can be directly opened on the bottom wall of the box body 100, the fixing member 40 is located on the inner side of the box body 100, and the fixing member 40 and the box body 100 are fixedly connected by a fastener 300 to achieve the sealing connection of the lubrication device to the bottom wall of the box body 100.
[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. A lubrication device for adjusting the lubricating oil level of a wind turbine gearbox, characterized in that: The lubrication device comprises: A housing (10) is arranged in the oil chamber of the wind turbine gearbox, and one end of the housing (10) is provided with an opening (13) for communicating with the lubricating oil; The pushing mechanism (20) is sealed and slidably arranged in the shell (10) to divide the shell (10) into an oil containing chamber (11) and an oil separating chamber (12). One end of the oil containing chamber (11) is provided with the opening (13). The pushing mechanism (20) is configured to move toward or away from the opening (13) to adjust the oil containing volume of the oil containing chamber (11).
2. The lubrication device according to claim 1, characterized in that: The pushing mechanism (20) comprises: A movable member (21) is sealed and slidably disposed in the housing (10) to divide the housing (10) into the oil containing chamber (11) and the oil separating chamber (12); A pushing member (22) is disposed in the oil separation chamber (12), and an output end of the pushing member (22) is connected to the movable member (21) so as to push the movable member (21) to move toward or away from the opening (13).
3. The lubrication device according to claim 2, characterized in that: A sealing member (30) is provided between the side of the movable member (21) facing the opening (13) and the inner wall of the housing (10).
4. The lubrication device according to claim 2, characterized in that: The pushing member (22) is a cylinder, a hydraulic cylinder or a linear motor.
5. The lubrication device according to claim 1, characterized in that: A communication port (121) is provided on the side wall of the oil separation chamber (12), and the communication port (121) is connected to the outside of the box body (100) of the wind turbine gear box, so that the oil separation chamber (12) is connected to the outside.
6. The lubrication device according to claim 1, characterized in that: It also comprises a control structure, which is electrically connected to the pushing mechanism (20).
7. The lubrication device according to claim 6, characterized in that: The side wall of the oil-isolating chamber (12) is provided with a wire opening (122), and the wire opening (122) is used to pass the wire so as to electrically connect the control structure to the driving mechanism (20).
8. The lubrication device according to claim 1, characterized in that: It also comprises a fixing member (40), wherein the fixing member (40) is arranged on the outer wall of the housing (10) so as to be fixedly connected to the box body (100) of the wind power gear box.
9. Wind power gearbox, characterized in that: It comprises a box body (100) and a lubricating device as claimed in any one of claims 1 to 8, wherein the lubricating device is arranged in an oil cavity of the box body (100).
10. The wind turbine gearbox according to claim 9, characterized in that: The lubrication device is sealed and connected to the bottom wall or the side wall of the box body (100).