Leakage pre-control system for gearbox of wind driven generator

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind driven generator gearbox leakage pre-control system which comprises a collecting part and a detecting part. The detection part is composed of a collection box and an oil-water mixture annunciator, a liquid storage cavity is formed in the collection box, a flow guide pipe communicated with a liquid inlet of the liquid storage cavity is arranged in the liquid storage cavity, a sensor section of the oil-water mixture annunciator is arranged in the flow guide pipe, a water outlet is formed in the bottom of the liquid storage cavity, an electromagnetic valve is arranged on the water outlet, and the electromagnetic valve is in communication connection with the oil-water mixture annunciator; a triggering piece and a triggered piece are arranged in the liquid storage cavity, the triggered piece is arranged above the water outlet, and the triggered piece is configured to give an alarm when the triggering piece floats to a preset triggering position. According to the gear oil tank of the wind driven generator, the water outlet is controlled to be conducted based on the detection result of the oil-water mixing annunciator, the effective space utilization rate of the liquid storage cavity can be improved, the operation and maintenance frequency is reduced, meanwhile, the triggering piece and the triggered piece are used for oil quantity monitoring and alarming, and the safety and reliability of the gear oil tank of the wind driven generator are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a wind generator gear box leakage pre-control system. Background Art

[0002] During wind power generation, the speed gears within the gearbox transfer and accelerate the low-speed rotational force generated by the wind turbine blades to the high-speed rotational force required by the generator, thereby driving the generator to generate electricity. This acceleration process is achieved through the gear pairs within the gearbox, while the gear oil tank ensures that these gears are effectively lubricated and cooled in complex and harsh operating environments, ensuring normal gear operation and extending their service life, playing a vital role in the operation of wind turbines.

[0003] High-altitude mountain wind turbines are often installed in high-altitude, cold, mountainous, and wilderness locations, subjecting them to extreme heat and cold weather and temperature fluctuations year-round. This puts the gear oil tank's sealing performance under great pressure, often leading to leakage or even large-scale leaks. These leaks can have a range of serious consequences, including insufficient lubrication of gears and bearings, shortening gear life, gear breakage, and bearing seizure, which can affect the normal operation of the entire wind turbine. Furthermore, leaked oil can drip onto the nacelle and tower, increasing the risk of fire. Fires in the nacelle, in particular, can be devastating and irreversible for wind turbines. Oil leaks into the environment can also cause environmental pollution. Currently, leaked liquids are often collected and processed in containers. However, in addition to oil, the leaked liquid also contains water, requiring frequent container handling and resulting in a waste of resources.

[0004] Based on this, how to effectively realize the timely detection and pre-control of wind turbine gearbox leakage is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a wind turbine gearbox leakage pre-control system, which collects and detects the leaking liquid, determines the composition of the leaking liquid and performs targeted treatment, so as to solve the technical problem of how to effectively realize the timely detection and pre-control of wind turbine gearbox leakage.

[0006] The embodiment of the utility model is realized by the following technical solution: a wind turbine gearbox leakage pre-control system, comprising a collection part for receiving the gearbox leakage liquid and a detection part for detecting the leakage liquid;

[0007] The detection unit is composed of a collection box and an oil-water mixing signal device. A liquid storage chamber is provided inside the collection box. The liquid storage chamber is provided with a liquid inlet connected to the liquid outlet of the collection unit. A guide tube is also provided in the liquid storage chamber. The first end of the guide tube is connected to the liquid inlet, and the second end of the guide tube extends to the bottom of the liquid storage chamber. A gap is reserved between the bottom of the liquid storage chamber and the second end of the guide tube. The sensor section of the oil-water mixing signal device is arranged in the guide tube. A water outlet is provided at the bottom of the liquid storage chamber. A solenoid valve is provided on the water outlet. The solenoid valve is communicatively connected to the oil-water mixing signal device.

[0008] A triggering member and a triggered member are also provided in the liquid storage chamber. The triggered member is provided above the water outlet. The triggering member can float up and down in the liquid storage chamber. The triggered member is configured to issue an alarm when the triggering member floats to a preset trigger position.

[0009] According to a preferred embodiment, the collecting box is detachably connected to the collecting portion.

[0010] According to a preferred embodiment, the triggering member is a sliding plate which is sleeved on the guide tube and has a clearance fit with the inner wall of the liquid storage cavity and the outer wall of the guide tube.

[0011] According to a preferred embodiment, a guide mechanism is provided on the inner wall of the liquid storage chamber, and the guide mechanism includes a guide groove opened on the inner wall of the liquid storage chamber, and a guide block embedded in the guide groove is provided on the sliding plate.

[0012] According to a preferred embodiment, the guide mechanism further includes a guide shaft arranged in the guide groove, and the guide block is sleeved on the guide shaft.

[0013] According to a preferred embodiment, at least one set of guide mechanisms is respectively provided on two opposite sides of the liquid storage cavity corresponding to the sliding plate.

[0014] According to a preferred embodiment, a plurality of the triggered components are provided, and the plurality of triggered components are arranged at different height positions in the liquid storage chamber.

[0015] The technical solution of a wind turbine gearbox leakage pre-control system provided by the present invention has at least the following advantages and beneficial effects: (1) leakage liquid is detected by an oil-water mixing signal device, thereby controlling the conduction of the water outlet and discharging water in time, which can improve the effective space utilization rate of the liquid storage chamber and reduce the frequency of operation and maintenance; (2) the configured triggering component and triggered component are used to monitor and alarm the oil amount in the liquid storage chamber, which greatly improves the safety and reliability of the wind turbine gear oil tank and the availability of the wind turbine, and at the same time provides important support for the efficient operation and intelligent management of the wind turbine gear oil tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the overall structure of the wind turbine gearbox leakage pre-control system provided in Example 1 of the present utility model;

[0017] Figure 2 A longitudinal sectional schematic diagram of a wind turbine gearbox leakage pre-control system provided in Example 3 of the present utility model;

[0018] Figure 3 A schematic longitudinal section diagram of a detection portion provided in Example 3 of the present utility model;

[0019] Figure 4 for Figure 2 A magnified schematic diagram of point A in the middle;

[0020] Figure 5 for Figure 3 A magnified schematic diagram of point B in the middle;

[0021] Icon: 1-collecting part, 101-collecting plate, 102-threaded hole, 2-detection part, 201-collecting box, 2011-liquid storage chamber, 2012-liquid inlet, 2013-flow guide tube, 2014-water outlet, 2015-trigger, 2016-triggered part, 2017-guide groove, 2018-guide shaft, 202-oil-water mixing signal device. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Example 1

[0024] Figure 1 This is a schematic diagram of the overall structure of the wind turbine gearbox leakage pre-control system provided by Example 1 of the present utility model. Figure 1 As shown, the wind turbine gearbox leakage pre-control system includes a collecting part 1 for receiving the leaked liquid from the gearbox and a detecting part 2 for detecting the leaked liquid.

[0025] Specifically in this embodiment, the collection unit 1, serving as a container for receiving leaked liquid and directing it to the detection unit 2, comprises a collection plate 101 surrounded by side panels. A liquid outlet is defined at the bottom of the collection plate 101, and the detection unit 2 is disposed on one side of the collection plate 101 and communicates with the outlet. Multiple groups of detection units 2 are provided. In a preferred embodiment of this embodiment, two groups are provided, each spaced apart on one side of the collection plate 101.

[0026] The detection part 2 is composed of a collection box 201 and an oil-water mixing signal device 202. A liquid storage chamber 2011 is provided inside the collection box 201. The liquid storage chamber 2011 is provided with a liquid inlet 2012 connected to the liquid outlet of the collection part 1. The leaked liquid received by the collection part 1 enters the liquid storage chamber 2011 through the liquid outlet and the liquid inlet 2012 for storage.

[0027] A guide tube 2013 is also provided in the liquid storage chamber 2011. The first end of the guide tube 2013 is connected to the liquid inlet 2012, and the second end of the guide tube 2013 extends to the bottom of the liquid storage chamber 2011. A gap is reserved between the bottom of the liquid storage chamber 2011 and the second end of the guide tube 2013. The leaked liquid from the liquid inlet 2012 is guided by the guide tube 2013 to flow to the bottom of the liquid storage chamber 2011, and enters the liquid storage chamber 2011 through the gap reserved between the bottom of the liquid storage chamber 2011 and the second end of the guide tube 2013.

[0028] The sensor section of the oil-water mixing signal device 202 is disposed within the flow guide tube 2013. As the leaked liquid flows through the flow guide tube 2013 to the bottom of the liquid storage chamber 2011, the sensor section of the oil-water mixing signal device 202 is immersed in the leaked liquid, thereby detecting the water content parameter of the leaked liquid.

[0029] A water outlet 2014 is provided at the bottom of the liquid storage chamber 2011. A solenoid valve is installed on the water outlet 2014 to control the flow of the water outlet 2014. In this embodiment, the solenoid valve is communicatively connected to an oil-water mixing signaler 202. The oil-water mixing signaler 202 is configured to send a signal to a control terminal when the water content of the leaking liquid exceeds a preset threshold, instructing the control terminal to issue an opening command to the solenoid valve, thereby controlling the flow of the water outlet 2014 and discharging the water from the liquid storage chamber 2011 through the water outlet 2014. The control terminal can be a single-chip microcomputer or an external control system, and is not specifically limited here.

[0030] It should be noted that the conduction time of the solenoid valve can be determined according to the specific water content in the leaking liquid, and the water content is directly determined by the sensor monitoring result of the oil-water mixing signal device 202, which will not be elaborated here; since the water sinks to the bottom of the liquid storage chamber 2011, it can be discharged from the water outlet 2014 first. Therefore, after the battery valve performs the conduction control for the corresponding time, the water in the leaking liquid is completely discharged, and the oil can continue to remain in the liquid storage chamber 2011.

[0031] In this embodiment, leakage liquid is detected by the oil-water mixing signal device 202, thereby controlling the conduction of the water outlet 2014 and draining the water in a timely manner, thereby improving the effective space utilization rate of the liquid storage chamber 2011 and reducing the frequency of operation and maintenance. In addition, the oil-water ratio information of the leaking liquid is crucial for determining the state of gear oil tank leakage and can help to promptly detect the operating status of the engine gear oil tank. The detected data is transmitted to the external control system through the output interface of the oil-water mixing signal device 202. This data can be used for real-time monitoring and analysis, helping remote monitoring and control personnel to make timely decisions and perform maintenance operations.

[0032] Furthermore, in order to monitor the amount of oil remaining in the liquid storage chamber 2011, a triggering member 2015 and a triggered member 2016 are also provided in the liquid storage chamber 2011. The triggered member 2016 is arranged above the water outlet 2014. The triggering member 2015 can float up and down in the liquid storage chamber 2011. The triggered member 2016 is configured to send an alarm to the control room or handheld signal receiver when the triggering member 2015 floats to a preset trigger position, so as to notify the operation and maintenance personnel to clean the collection box 201.

[0033] This embodiment utilizes the configured triggering member 2015 and the triggered member 2016 to monitor and alarm the oil level in the liquid storage chamber 2011, which greatly improves the safety and reliability of the wind turbine gear oil tank and the availability of the wind turbine, and at the same time provides important support for the efficient operation and intelligent management of the wind turbine gear oil tank.

[0034] Example 2

[0035] This embodiment is based on the technical solution provided in Example 1, and further explains the connection relationship between the collection box 201 and the collection part 1:

[0036] In this embodiment, the collecting box 201 is detachably connected to the collecting part 1; in a possible implementation, the collecting box 201 is connected to the collecting part 1 by a threaded connection, a thread is provided inside the liquid outlet opened at the bottom of the collecting plate 101, and an external thread is provided at the liquid inlet 2012 of the collecting box 201 corresponding to the internal thread of the liquid outlet, thereby realizing the detachable connection between the collecting box 201 and the collecting part 1 by the cooperation of the internal and external threads; in addition, other connection methods such as snap-on connection can also be adopted, which will not be elaborated here.

[0037] Example 3

[0038] This embodiment is based on the technical solution provided in Example 1, and further describes the triggering member 2015 and the triggered member 2016:

[0039] In this embodiment, the triggering member 2015 is a floating member. There is no specific restriction on the selection of the floating member, and it can be in the form of a float, a floating plate, etc. When the amount of leakage liquid in the liquid storage chamber 2011 changes, the floating member can float up and down in the liquid storage chamber 2011, thereby triggering the triggered member 2016.

[0040] The triggered component 2016 and the triggering component 2015 can be triggered in the following manner. For example, the triggered component 2016 is provided with a pair of light emitters and light receivers, respectively. The light emitters and light receivers are arranged on opposite sides of the liquid storage chamber 2011. The light receiver receives the laser emitted by the light emitter. When the triggering component 2015 floats to a preset trigger position, that is, on the optical path between the two, the signal of the light receiver is interrupted, thereby achieving triggering. For example, the triggered component 2016 is a laser ranging module. When the triggering component 2015 floats to the preset trigger position, the distance between the triggering component 2015 and the triggered component 2016 is less than a preset threshold value, thereby achieving triggering. No further details will be given here.

[0041] In a preferred embodiment of this embodiment, see Figures 2 to 5 As shown, the trigger member 2015 is a sliding plate that is sleeved on the guide tube 2013 and is gap-matched with the inner wall of the liquid storage chamber 2011 and the outer wall of the guide tube 2013. The sliding plate fits tightly against the inner wall of the liquid storage chamber 2011 to achieve sealing at both ends, thereby preventing leakage; the inner wall of the liquid storage chamber 2011 is provided with a guide mechanism, which includes a guide groove 2017 opened on the inner wall of the liquid storage chamber 2011 and a guide shaft 2018 provided in the guide groove 2017, and the sliding plate is provided with a guide block embedded in the guide groove 2017, and the guide block is sleeved on the guide shaft 2018, so that the sliding plate can slide up and down in the liquid storage chamber 2011 under the guidance of the guide shaft 2018 and the guide groove 2017. Preferably, the liquid storage chamber 2011 is provided with at least one set of guiding mechanisms on both sides of the sliding plate, thereby ensuring the stability of the sliding plate sliding up and down, allowing the sliding plate to be finely adjusted within a wider range, optimizing the flow of leaked liquid, and avoiding the huge vibration during the operation of the wind turbine causing the liquid level inside the liquid storage chamber 2011 to fluctuate greatly, thereby causing frequent false alarms.

[0042] Example 4

[0043] This embodiment is based on the technical solution provided in any one of Embodiments 1 to 3, and further describes the configuration of the triggered component 2016:

[0044] In this embodiment, in order to realize the multi-level alarm of the oil amount in the liquid storage chamber 2011, a plurality of the triggered components 2016 are provided, and the plurality of triggered components 2016 are arranged at different height positions of the liquid storage chamber 2011; for example, in one embodiment, two triggered components 2016 are provided, one of which is provided at a height position where the ratio of the distance between the upper and lower sections of the liquid storage chamber 2011 is 1:5, and the other is provided at a height position where the ratio of the distance between the upper and lower sections of the liquid storage chamber 2011 is 1:2, thereby ensuring the sensitivity and reliability of the alarm under various working conditions.

[0045] The working principle of the technical solution provided in this embodiment is described below:

[0046] When the leaked liquid enters the collection plate 101, it will enter the liquid storage chamber 2011 of the collection box 201 through the liquid inlet 2012. The guide tube 2013 will guide the liquid to flow to the liquid storage chamber 2011 space under the sliding plate. At the same time, the oil-water mixing signal device 202 will detect the oil-water ratio of the leaked liquid and send the detection result upward. If it is detected that the leaked liquid contains water or the main body is water, the solenoid valve is controlled to open and the water is discharged through the water outlet 2014. The solenoid valve is controlled by an external control system to ensure that the water can be discharged at the appropriate time and under appropriate circumstances. The oil will accumulate in the liquid storage chamber 2011, and the accumulated oil will drive the sliding plate to float upward along the liquid storage chamber 2011. When the oil drives the sliding plate to the trigger position of the trigger component 2016, the trigger component 2016 will be triggered to send an alarm, thereby reminding the operation and maintenance personnel to perform operation and maintenance. The operation and maintenance personnel can disassemble the collection box 201 to clean the interior and restore the relevant signals.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wind turbine gearbox leakage pre-control system, characterized in that: It comprises a collecting part (1) for receiving the leaked liquid from the gear box and a detecting part (2) for detecting the leaked liquid; The detection part (2) is composed of a collection box (201) and an oil-water mixing signal device (202), a liquid storage chamber (2011) is provided inside the collection box (201), the liquid storage chamber (2011) is provided with a liquid inlet (2012) connected to the liquid outlet of the collection part (1), a guide tube (2013) is further provided inside the liquid storage chamber (2011), a first end of the guide tube (2013) is connected to the liquid inlet (2012), and the guide tube (2013) is connected to the liquid outlet (2012). The second end of the oil-water mixing signal device (202) extends to the bottom of the liquid storage chamber (2011), a gap is reserved between the bottom of the liquid storage chamber (2011) and the second end of the flow guide tube (2013), the sensor section of the oil-water mixing signal device (202) is arranged in the flow guide tube (2013), the bottom of the liquid storage chamber (2011) is provided with a water outlet (2014), the water outlet (2014) is provided with a solenoid valve, and the solenoid valve is communicatively connected to the oil-water mixing signal device (202); A triggering member (2015) and a triggered member (2016) are further provided in the liquid storage chamber (2011); the triggered member (2016) is provided above the water outlet (2014); the triggering member (2015) can float up and down in the liquid storage chamber (2011); and the triggered member (2016) is configured to issue an alarm when the triggering member (2015) floats to a preset trigger position.

2. The wind turbine gearbox leakage pre-control system according to claim 1, characterized in that: The collecting box (201) is detachably connected to the collecting portion (1).

3. The wind turbine gearbox leakage pre-control system according to claim 1, characterized in that: The trigger member (2015) is a sliding plate that is sleeved on the flow guide tube (2013) and is clearance-matched with the inner wall of the liquid storage cavity (2011) and the outer wall of the flow guide tube (2013).

4. The wind turbine gearbox leakage pre-control system according to claim 3, characterized in that: The inner wall of the liquid storage cavity (2011) is provided with a guide mechanism, and the guide mechanism includes a guide groove (2017) opened on the inner wall of the liquid storage cavity (2011), and the sliding plate is provided with a guide block embedded in the guide groove (2017).

5. The wind turbine gearbox leakage pre-control system according to claim 4, characterized in that: The guide mechanism further includes a guide shaft (2018) disposed in the guide groove (2017), and the guide block is sleeved on the guide shaft (2018).

6. The wind turbine gearbox leakage pre-control system according to claim 5, characterized in that: At least one set of guide mechanisms is respectively provided on two opposite sides of the liquid storage cavity (2011) corresponding to the sliding plate.

7. The wind turbine gearbox leakage pre-control system according to any one of claims 1 to 6, characterized in that: There are multiple triggered components (2016), and the multiple triggered components (2016) are arranged at different height positions of the liquid storage chamber (2011).

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