Inner leakage monitoring device for yaw brake of wind driven generator
By setting up a four-way joint and an internal leakage monitoring device of the detection part on the side of the yaw brake of the wind turbine, the internal leakage detection problem of the yaw brake of the wind turbine is solved, real-time monitoring and leakage positioning are achieved, and working efficiency and equipment service life are improved.
Patent Information
- Application Number
- CN202422072427.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The yaw brake of the wind turbine is prone to internal leakage after a long period of operation, resulting in oil loss and low working efficiency. It is difficult for the existing technology to detect and locate the oil leakage source in real time.
An internal leakage monitoring device for yaw brake of a wind turbine is designed, and real-time monitoring of oil and leakage positioning is achieved by providing a four-way joint and a detection part on the side of the brake.
The device can detect internal leakage of the brake in real time, reduce oil loss, improve working efficiency, and replace it targetedly by positioning the leakage source, extending the service life of the equipment.
Smart Images
Figure CN223018808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wind power generation equipment, in particular to an internal leakage monitoring device for a yaw brake of a wind power generator. Background Art
[0002] The yaw system is one of the key parts of a wind turbine, which allows the tower and nacelle to rotate according to the change in wind direction to keep the wind rotor always facing the wind direction, thereby maximizing the capture of wind energy. The yaw brake is a key actuator in this system, which provides the necessary braking torque during the yaw process to ensure that the nacelle and tower can stop accurately at the new position.
[0003] The yaw brake of a wind turbine needs to withstand a brake pressure of about 170-200 bar when the wind turbine stops yaw, which places high demands on the brake sealing performance. After long-term operation, the brake will leak oil. Common leaks include oil pipe leakage, oil pipe joint leakage, oil leakage caused by the detachment of the brake piston, and internal oil leakage of the brake. The first three types of oil leakage can be found through visual inspection, but when there is internal leakage of the brake, it cannot be found through appearance inspection. Usually, all parts are dismantled for testing, which has low work efficiency and a huge workload. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a monitoring device which can detect brake internal leakage in real time and improve working efficiency.
[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a device for monitoring internal leakage of a yaw brake of a wind turbine, comprising a plurality of brakes connected in series in sequence, a four-way joint being fixedly provided on the oil drain port on the side of the brake, one port of the four-way joint being connected to the oil drain port, a detection unit being provided on one port of the four-way joint, two ports of the four-way joint of the brake located in the middle being respectively connected to the four-way joint ports of the adjacent brakes, one port of the four-way joint on the brake located at the head end being closed, and one port of the four-way joint on the brake located at the end being connected to the oil tank.
[0006] The beneficial effects of the utility model are as follows: the brakes are connected in series in sequence through the four-way joint, and when internal oil leakage occurs, the oil can be discharged to the oil tank to reduce oil loss, and the detection unit can determine which brake is leaking and perform targeted replacement to improve work efficiency.
[0007] On the basis of the above technical solution, the present invention can also be improved as follows.
[0008] Furthermore, two adjacent four-way joints are connected via an oil return pipe, and the middle portion of the oil return pipe has a higher level than both ends.
[0009] The beneficial effect of adopting the above further solution is that the middle part of the oil return pipe bulges, preventing the oil from flowing to the adjacent detection part when there is internal leakage and causing misjudgment.
[0010] Further, a one-way valve is provided on the oil return pipe.
[0011] The beneficial effect of adopting the above further solution is that it prevents the oil from flowing back when there is internal leakage and causing misjudgment.
[0012] Further, the material of the oil return pipe is rubber.
[0013] The beneficial effect of adopting the above further solution is that it has strong corrosion resistance and improves the service life.
[0014] Further, the detection part is a pressure gauge.
[0015] The beneficial effect of adopting the above further solution is to detect whether there is internal leakage through pressure.
[0016] Further, the detection part is an oil receiving pot.
[0017] The beneficial effect of adopting the above further solution is to determine whether there is internal leakage by observing whether there is oil in the oil receiving pot.
[0018] Further, the oil receiving pot is made of a transparent material.
[0019] The beneficial effect of adopting the above further solution is that the transparent material is convenient for observation.
[0020] Further, the four-way joint is made of any one of brass, stainless steel or aluminum alloy.
[0021] The beneficial effect of adopting the above further solution is that it has strong corrosion resistance and improves the service life.
[0022] Further, the number of the brakes is sixteen.
[0023] The beneficial effect of adopting the above further solution is to ensure sufficient braking force of the wind turbine.
[0024] Further, an oil leakage sensor is provided inside the fuel tank.
[0025] The beneficial effect of adopting the above further solution is to detect the oil leakage situation in time and give an alarm. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the pressure gauge of the present utility model.
[0027] Figure 2 It is a schematic diagram of the brake of the present utility model.
[0028] Figure 3 Schematic diagram of the oil pan of the present utility model.
[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0030] 1. Brake; 2. Oil drain port; 3. Four-way joint; 4. Return oil pipe; 5. Check valve; 6. Pressure gauge; 7. Oil pan. Specific embodiments
[0031] The principles and features of the present utility model will be described below in conjunction with the attached drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.
[0032] Embodiment 1
[0033] As Figures 1 to 2 shown, a leakage monitoring device for the yaw brake of a wind turbine includes a plurality of brakes 1 connected in series in sequence. A four-way joint 3 is fixedly provided on the oil drain port 2 on the side of each brake 1. One port of the four-way joint 3 is communicated with the oil drain port 2. A detection part is arranged on one port of the four-way joint 3. Two ports of the four-way joint 3 of the brake 1 located in the middle are respectively communicated with the ports of the four-way joint 3 of the adjacent brake 1. One port of the four-way joint 3 on the brake 1 located at the head end is closed, and one port of the four-way joint 3 on the brake 1 located at the tail end is communicated with the fuel tank.
[0034] The beneficial effect of this embodiment is that the brakes 1 are connected in series through the four-way joints 3. When internal oil leakage occurs, the oil can be drained to the fuel tank, reducing oil loss. The detection part can determine which brake 1 has a leak and perform targeted replacement, improving work efficiency.
[0035] Specifically, the brake 1 is fixedly connected to the yaw large gear of the wind turbine through bolts. Two main oil circuit joints are arranged on the top of the brake 1. The main oil circuit joints are connected in series in sequence to transmit oil and provide braking torque to brake the wind turbine.
[0036] An oil drain port 2 is provided on the side of the brake 1. A four-way joint 3 is installed on the oil drain port 2. A plug is installed on the port of the four-way joint 3 on the brake 1 located at the head end away from the adjacent four-way joint 3. One end of the four-way joint 3 on the brake 1 located at the tail end away from the adjacent four-way joint 3 is communicated with the fuel tank for oil return.
[0037] When the brake 1 has internal oil leakage, the oil flows out from the oil drain port 2 on the side, the detection part changes, reminding the staff to replace it, and finally the oil flows back into the fuel tank through the four-way joints 3 connected in series.
[0038] Embodiment 2
[0039] AsFigures 1 to 2 As shown, preferably, on the basis of Embodiment 1, two adjacent four-way joints 3 are connected through an oil return pipe 4, and the horizontal height of the middle part of the oil return pipe 4 is higher than that of both ends.
[0040] The beneficial effect of adopting the preferred solution in the above embodiment is that the middle part of the oil return pipe 4 bulges, preventing the oil from flowing to the adjacent detection part when there is internal leakage, resulting in misjudgment.
[0041] Preferably, a check valve 5 is provided on the oil return pipe 4.
[0042] The beneficial effect of adopting the preferred solution in the above embodiment is that it prevents the oil from flowing back when there is internal leakage, resulting in misjudgment.
[0043] Preferably, the material of the oil return pipe 4 is rubber.
[0044] The beneficial effect of adopting the preferred solution in the above embodiment is that it has strong corrosion resistance and improves the service life.
[0045] Specifically, when the brake 1 has internal leakage, the oil flows out from the side oil drain port 2. After the detection part changes, if the staff fails to discover and replace it in time, the oil may flow to the detection parts of other brakes 1, and the staff still cannot tell which brake 1 has internal leakage;
[0046] In this embodiment, the middle part of the oil return pipe 4 is bent high, which can increase the time for the oil to flow to the detection part of the adjacent brake 1 even if the staff fails to discover the internal leakage in time;
[0047] The check valve 5 ensures that the oil can only flow in the direction of the fuel tank, facilitating oil drainage, and can also prevent the oil from moving in the reverse direction during internal leakage, causing misjudgment of the detection part of the brake 1 in the reverse direction.
[0048] Embodiment 3
[0049] As Figures 1 to 2 shown, preferably, on the basis of Embodiments 1-2, the detection part is a pressure gauge 6.
[0050] The beneficial effect of adopting the preferred solution in the above embodiment is to detect whether there is internal leakage through pressure.
[0051] Embodiment 4
[0052] As Figure 3 shown, preferably, on the basis of Embodiments 1-3, the detection part is an oil receiving pot 7.
[0053] The beneficial effect of adopting the preferred solution in the above embodiment is to determine whether there is internal leakage by observing whether there is oil in the oil receiving pot 7.
[0054] Preferably, the oil receiving pot 7 is made of a transparent material.
[0055] The beneficial effects of adopting the preferred solutions in the above embodiments are as follows: The transparent material facilitates observation.
[0056] Specifically, the oil receiving pot 7 is installed on the four-way joint 3. The oil receiving pot 7 is placed horizontally or with the bottom facing the ground. When internal leakage occurs, the oil will first flow into the oil receiving pot 7, and the staff can discover it in time.
[0057] Embodiment 5
[0058] As Figures 1 to 2 shown, preferably, on the basis of Embodiments 1-4, the four-way joint 3 is made of any one of brass, stainless steel or aluminum alloy.
[0059] The beneficial effects of adopting the preferred solutions in the above embodiments are as follows: It has strong corrosion resistance and improves the service life.
[0060] Embodiment 6
[0061] As Figures 1 to 2 shown, preferably, on the basis of Embodiments 1-5, the number of the brakes 1 is sixteen.
[0062] The beneficial effects of adopting the preferred solutions in the above embodiments are as follows: Ensure sufficient braking force of the wind turbine.
[0063] Embodiment 7
[0064] As Figures 1 to 2 shown, preferably, on the basis of Embodiments 1-6, an oil leakage sensor is arranged inside the fuel tank.
[0065] The beneficial effects of adopting the preferred solutions in the above embodiments are as follows: Detect the oil leakage situation in time and give an alarm.
[0066] Specifically, an oil leakage sensor is arranged in the fuel tank. When the staff has not discovered the internal leakage all the time, the oil flows into the fuel tank through the return pipe 4 to trigger the sensor and give an alarm in time.
[0067] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0068] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0069] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0070] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0072] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A device for monitoring internal leakage of a yaw brake of a wind turbine, comprising a plurality of brakes (1) connected in series, characterized in that: A four-way joint (3) is fixedly provided on the oil drain port (2) on the side of the brake (1), one port of the four-way joint (3) is connected to the oil drain port (2), and a detection unit is provided on one port of the four-way joint (3). Two ports of the four-way joint (3) of the brake (1) located in the middle are respectively connected to the ports of the four-way joint (3) of the adjacent brake (1), one port of the four-way joint (3) on the brake (1) at the head end is closed, and one port of the four-way joint (3) on the brake (1) at the end is connected to the oil tank.
2. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 1, characterized in that: Two adjacent four-way connectors (3) are connected via an oil return pipe (4), and the middle portion of the oil return pipe (4) has a higher level than both ends.
3. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 2, characterized in that: The oil return pipe (4) is provided with a one-way valve (5).
4. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 2, characterized in that: The oil return pipe (4) is made of rubber.
5. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 1, characterized in that: The detection part is a pressure gauge (6).
6. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 1, characterized in that: The detection part is an oil receiving pot (7).
7. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 6, characterized in that: The oil receiving pot (7) is made of transparent material.
8. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 1, characterized in that: The material of the four-way joint (3) is any one of brass, stainless steel or aluminum alloy.
9. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to claim 1, characterized in that: The number of the brakes (1) is sixteen.
10. The internal leakage monitoring device for the yaw brake of a wind turbine generator according to any one of claims 1 to 9, characterized in that: An oil leakage sensor is arranged inside the oil tank.