Oil leakage detection device applied to wind driven generator

Abstract

The utility model relates to the technical field of wind generating sets, in particular to an oil leakage detection device applied to a wind driven generator, which is applied to a fan gearbox and comprises a camera, a mounting seat, a liquid collection tank, a point type oil leakage sensor, a funnel-shaped flow guide frame and a controller. The mounting seat is arranged between the fan gear box and the liquid collecting box, the funnel-shaped flow guide frame is arranged on the outer surface of the mounting seat, the point type oil leakage sensor is arranged on the funnel-shaped flow guide frame, and a contact of the point type oil leakage sensor is arranged in a flow guide groove in the lower end of the funnel-shaped flow guide frame; the tail end of the flow guide groove is connected to the liquid collecting box, the camera is used for shooting images of the outer surfaces of the mounting base and the fan gearbox, and the camera and the point type oil leakage sensor are electrically connected to the controller. According to the utility model, the oil leakage condition of the fan gear box can be accurately detected, and timely alarm and early warning can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind generating set technical field, concretely relates to a kind of oil leakage detection device applied to wind generating set. BACKGROUND

[0002] Gear box as important component in wind generating set, undertakes power transmission, adjusts blade angle and so on heavy task, can improve fan reliability, wind energy utilization efficiency and generator efficiency, effectively prevent windmill stall and the occurrence of other accidents. Therefore, it is crucial to ensure the health status of fan gear box. If gear box occurs oil leakage, it will pollute fan cabin environment on the one hand, affect the operation of other equipment;On the other hand, it will cause the damage of gear box and lead to fan unable to put into operation, and strengthening the on-line state monitoring of fan gear box oil leakage can make the operating personnel judge the health status of gear box in the first time, thereby improving the safety of equipment operation. Therefore, the existing gear box urgently needs an effective safety monitoring and alarming device. SUMMARY

[0003] The utility model aims at providing a kind of oil leakage detection device applied to wind generating set, can accurately detect the oil leakage of fan gear box, and timely alarm early warning.

[0004] In order to achieve the above purpose, a kind of oil leakage detection device applied to wind generating set is provided, applied to fan gear box, including camera, mounting seat, liquid collecting tank, point type oil leakage sensor, funnel-shaped flow guide frame and controller, the liquid collecting tank is located below fan gear box for collecting oil leakage oil, the mounting seat is arranged between fan gear box and liquid collecting tank, the funnel-shaped flow guide frame is arranged on the outer surface of mounting seat, the point type oil leakage sensor is arranged on funnel-shaped flow guide frame, and its contact is arranged in the flow guide groove at the lower end of funnel-shaped flow guide frame;The end of the flow guide groove is connected to the liquid collecting tank, the camera is used for shooting the outer surface image of mounting seat and fan gear box, the camera and point type oil leakage sensor are electrically connected to the controller.

[0005] Further, it further includes infrared thermal imaging module, the infrared thermal imaging module is used for shooting fan gear box, and the infrared thermal imaging module is electrically connected with the controller.

[0006] Further, the liquid collecting tank is provided with magnetic suspension ball liquid level meter, and the magnetic suspension ball liquid level meter is electrically connected with the controller.

[0007] Further, it further includes alarm module, and the alarm module is electrically connected with the controller.

[0008] Further, the outer surface of the mounting seat is provided with limiting protrusion for limiting funnel-shaped flow guide frame, the upper surface of the limiting protrusion is provided with threaded hole, and the point type oil leakage sensor is fixed on the limiting protrusion by bolt.

[0009] Principles and advantages:

[0010] 1. The scheme can improve the precision of fan gear box oil leakage monitoring by fusing image recognition, oil leakage sensor signal and thermal infrared data, and timely warning once oil leakage occurs.

[0011] 2. The installation seat and the funnel-shaped flow guide frame are arranged, because the shape of the fan gear box is irregular, the installation seat is arranged between the fan gear box and the oil collecting tank, which can avoid affecting the normal transmission of the fan gear box, and facilitate the photographing of the camera, so as to facilitate the identification of whether the fan gear box leaks oil through the image recognition mode, thereby improving the timeliness of oil leakage detection. The oil liquid leaked can be converged and collected through the funnel-shaped flow guide frame, and the point type oil leakage sensor is convenient to install, the contact point of the point type oil leakage sensor is arranged at the convergence place of the funnel-shaped flow guide frame, so as to improve the timeliness of oil leakage detection.

[0012] 3. During the operation of the fan gear box, a large amount of heat will be generated due to the friction between the gears, which will cause the temperature inside the box to rise. If the heat is not dissipated in time, the pressure inside and outside the box will be unbalanced, which may cause the lubricating oil to leak out of the gap. Therefore, the infrared thermal imaging module is arranged to detect the temperature of the fan gear box, so as to analyze whether the oil leakage is likely to occur through the temperature, and the timeliness of oil leakage detection is high.

[0013] 4. The magnetic floating ball liquid level meter is only used for detecting the oil liquid level of the oil collecting tank, indicating the degree of oil leakage of the fan gear box, and the timeliness of oil leakage detection is low, mainly due to the viscous nature of the oil liquid and the long flow path. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of an oil leakage detection device applied to a wind driven generator according to an embodiment of the present application;

[0015] Figure 2 It is a structural schematic view of the oil collecting tank, the fan gear box and the installation seat. DETAILED DESCRIPTION

[0016] The following will be further described in detail through specific embodiments:

[0017] The reference signs in the drawings of the specification include: fan gear box 1, installation seat 2, oil collecting tank 3, magnetic floating ball liquid level meter 4, 5, point type oil leakage sensor 6, contact point 7, flow guide groove 8, funnel-shaped flow guide frame 9.

[0018] Embodiment one

[0019] An oil leakage detection device applied to a wind driven generator, basically as Figure 1 , Figure 2As shown, applied to fan gear box, including camera, mounting seat, liquid collecting tank, point type oil leakage sensor, magnetic floating ball liquid level meter, alarm module, infrared thermal imaging module, funnel-shaped flow guide frame and controller.

[0020] The liquid collecting tank is located below the fan gear box for collecting leaked oil, the mounting seat is arranged between the fan gear box and the liquid collecting tank, the mounting seat is a rectangular sleeve, the lower end edge is provided with a convex part for collecting oil, the convex part is provided with a collecting groove, the bottom of the collecting groove is connected to the liquid collecting tank through a pipeline to realize oil collection. The funnel-shaped flow guide frame is arranged on the outer surface of the mounting seat, the funnel-shaped flow guide frame is two bent metal sheets, one on the left and one on the right, the vertical section is funnel-shaped, the upper part is open for converging oil, and the lower part is a vertical flow guide groove. The point type oil leakage sensor is arranged on the funnel-shaped flow guide frame, and the contact point thereof is arranged in the flow guide groove at the lower end of the funnel-shaped flow guide frame. The end of the flow guide groove is connected to the collecting groove in the convex part, and the collecting groove is connected to the liquid collecting tank through a pipeline, and the liquid collecting tank is provided with a magnetic floating ball liquid level meter. The camera is used for shooting the image of the outer surface of the mounting seat and the fan gear box, and the camera, the alarm module, the magnetic floating ball liquid level meter, the infrared thermal imaging module and the point type oil leakage sensor are electrically connected to the controller. The alarm module is a conventional audible and visual alarm, the infrared thermal imaging module is a conventional infrared thermal imaging camera, and the controller is a conventional PLC controller.

[0021] The outer surface of the mounting seat is provided with a limiting convex part for limiting the funnel-shaped flow guide frame, the upper surface of the limiting convex part is provided with a threaded hole, and the point type oil leakage sensor is fixed on the limiting convex part through a bolt.

[0022] The scheme can improve the oil leakage monitoring accuracy of the fan gear box by fusing image recognition, oil leakage sensor signals and thermal infrared data, and timely warning in case of oil leakage.

[0023] The mounting seat and the funnel-shaped flow guide frame are arranged, because the shape of the fan gear box is irregular, the mounting seat arranged between the fan gear box and the liquid collecting tank can avoid affecting the normal transmission of the fan gear box, and facilitate the shooting of the camera, so as to facilitate the identification of whether the fan gear box leaks oil through the image recognition mode, thereby improving the timeliness of oil leakage detection. The funnel-shaped flow guide frame can converge and collect the leaked oil, and facilitate the installation of the point type oil leakage sensor, the contact point of the point type oil leakage sensor is arranged at the convergence place of the funnel-shaped flow guide frame, and the characteristics of the leaked oil contacting impurities to increase conductivity or reduce resistance are utilized, or the gear oil added with conductive additives is suitable. The conductivity or resistance of the leaked oil is detected to improve the timeliness of oil leakage detection.

[0024] During the operation of the fan gear box, a large amount of heat is generated due to the friction between the gears, which causes the temperature inside the box to rise. If the heat is not dissipated in time, the pressure inside and outside the box is not balanced, which may cause the lubricating oil to leak out of the gap. Therefore, an infrared thermal imaging module is provided to detect the temperature of the fan gear box, so as to analyze whether oil leakage is possible through temperature analysis, and the timeliness of the oil leakage detection is high.

[0025] The above is only an embodiment of the present application, and the common knowledge of specific structures and properties in the scheme is not described too much. The ordinary skilled person in the art knows all the ordinary technical knowledge in the field of the application before the filing date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date. The ordinary skilled person in the art can improve and implement the present scheme based on their own ability under the guidance of the present application. Some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered within the scope of protection of the present application. The effect and practicality of the present application will not be affected. The scope of protection of the present application should be subject to the content of its claims, and the specific implementation mode in the specification can be used to explain the content of the claims.

Claims

1. An oil leakage detection device for a wind turbine, applied to a wind turbine gearbox, characterized by: It includes a camera, a mounting base, a liquid collecting box, a point oil leakage sensor, a funnel-shaped guide frame and a controller. The liquid collecting box is located below the fan gear box and is used to collect leaked oil. The mounting base is arranged between the fan gear box and the liquid collecting box. The funnel-shaped guide frame is arranged on the outer surface of the mounting base. The point oil leakage sensor is arranged on the funnel-shaped guide frame, and its contact is arranged in the guide groove at the lower end of the funnel-shaped guide frame; the end of the guide groove is connected to the liquid collecting box, and the camera is used to capture images of the outer surfaces of the mounting base and the fan gear box. The camera and the point oil leakage sensor are both electrically connected to the controller.

2. The oil leakage detection device for a wind turbine according to claim 1, characterized in that: It also includes an infrared thermal imaging module, which is used to photograph the wind turbine gearbox and is electrically connected to the controller.

3. The oil leakage detection device for a wind turbine according to claim 1, characterized in that: A magnetic float ball level gauge is provided in the liquid collecting tank and is electrically connected to the controller.

4. The oil leakage detection device for a wind turbine according to claim 1, characterized in that: It also includes an alarm module, which is electrically connected to the controller.

5. The oil leakage detection device for a wind turbine according to claim 1, characterized in that: The outer surface of the mounting seat is provided with a limiting protrusion for limiting the funnel-shaped guide frame, the upper surface of the limiting protrusion is provided with a threaded hole, and the point oil leakage sensor is fixed on the limiting protrusion by bolts.

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