Online monitoring and filtering integrated device for oil liquid of wind power gear box

Abstract

The invention discloses a wind power gear box oil online monitoring and filtering integrated device, and relates to the technical field of wind power gear box oil online monitoring, the wind power gear box oil online monitoring and filtering integrated device comprises a wind driven generator shell and a gear box body, and the gear box body is installed in the wind driven generator shell. According to the invention, the monitoring and maintenance mechanism is arranged, and a closed loop formed by an oil drainage connecting pipe, an oil return connecting pipe, an oil guide connecting hose, a connecting elbow, a discharge pipe and an oil return connecting hose is matched with a parameter ferromagnetic particle sensor, a pressure sensor and a detachable filter, so that oil parameters are monitored and filtered; another closed loop formed by an oil drainage connecting pipe, an oil return connecting pipe, an oil guide connecting hose, a first external connecting pipe, an oil return connecting hose and a second external connecting pipe can be externally connected with a flushing pipeline and an oil changing pipeline, so that cleaning of the interior of the gear box body and oil changing are achieved, automatic switching of two working modes is achieved through the valve combination, and the working efficiency is improved. Therefore, the operation is simple and convenient.

Description

Technical Field

[0001] This invention belongs to the field of online monitoring technology for wind turbine gearbox oil, and in particular relates to an integrated device for online monitoring and filtration of wind turbine gearbox oil. Background Technology

[0002] A wind turbine is a power machine that converts wind energy into electrical energy. Its core function is to capture wind energy through blades and then output electrical energy through transmission and power generation. The wind turbine gearbox is the core component that converts the low-speed power of the wind turbine into high-speed electrical energy from the generator. Its operating status directly affects the unit's power generation efficiency and safety. Due to the harsh environment of high altitude (nacelle height is typically 50-100 meters), variable loads, and strong vibrations, wear particles are easily generated in the gearbox's internal gear meshing and bearing rotation, leading to problems such as oil contamination, viscosity deterioration, and increased water content. If not monitored and addressed in time, this can cause serious failures such as gear pitting and bearing seizure, resulting in unit shutdown or even equipment damage. Therefore, real-time online monitoring of gearbox oil parameters (such as abrasive content, viscosity, and water content) is a key technical means to achieve predictive maintenance and reduce operation and maintenance costs.

[0003] For example, CN110285964B proposes an online monitoring system for wind turbine gearbox oil, which includes a hydraulic circuit for monitoring wind turbine gearbox oil, an oil data monitoring module, an oil monitoring data acquisition and processing module, a real-time monitoring and display module for wind turbine high-altitude nacelle, a remote wireless ground monitoring system, and a fault diagnosis database.

[0004] The above-mentioned patent has the following defects in use:

[0005] This solution mainly uses a gear pump to monitor and circulate the oil, but it is insufficient for post-monitoring processing. For example, when the gearbox oil needs to be replaced due to aging or contamination, it is difficult to automatically flush, clean, and replace it. Often, workers have to carry oil drums and tools and climb up the ladder inside the wind turbine to reach the gearbox. When changing the oil, the monitoring pipeline must be disassembled first, and then external flushing and oil replacement pipelines must be connected for cleaning and replacement. After the oil change, the monitoring pipeline must be reinstalled and the sensor calibrated. The operation is cumbersome and time-consuming, significantly increasing labor costs. At the same time, the workers carrying heavy objects back and forth and working at heights pose certain dangers. Therefore, this invention proposes an integrated online monitoring and filtration device for wind turbine gearbox oil. Summary of the Invention

[0006] This invention provides an integrated online monitoring and filtration device for wind turbine gearbox oil. Through a specially designed monitoring and maintenance mechanism, a closed loop consisting of a drain pipe, return pipe, oil guide hose, connecting bend, discharge pipe, and return hose, combined with a parameter ferromagnetic particle sensor, a pressure sensor, and a removable filter, enables oil parameter monitoring and filtration. Another closed loop, formed by the drain pipe, return pipe, oil guide hose, first external connection pipe, return hose, and second external connection pipe, allows for external flushing and oil change pipelines, facilitating internal cleaning and oil replacement of the gearbox. Automatic switching between two operating modes is achieved via valve combinations, eliminating the need to disassemble sensors or pipelines, making operation simple and convenient. This significantly reduces wasted time, improves efficiency, and lowers costs. The hoisting mechanism, through its forward and reverse rotation in conjunction with wire rope transmission, allows the monitoring and maintenance mechanism to be lowered to the ground for maintenance and then raised back to its original position after maintenance. This eliminates the need for personnel to climb to the high altitudes inside the wind turbine casing, reducing the risks of high-altitude climbing and operations and improving safety. Furthermore, the auxiliary winding mechanism, through the forward and reverse rotation of a pair of servo motors and a winding drum, synchronously and orderly winds and extends the oil guide hose and return hose during the lifting and lowering of the monitoring and maintenance mechanism. This reduces tangling, pulling, and messy phenomena, ensuring smooth oil flow in processes such as oil monitoring, flushing, and oil changes. In summary, this solves the problems mentioned in the background technology.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] The present invention provides an integrated online monitoring and filtration device for wind turbine gearbox oil, comprising:

[0009] The wind turbine housing and gearbox body are provided. The gearbox body is installed inside the wind turbine housing. An oil drain port and an oil return port are respectively provided on one side of the gearbox body. An oil drain pipe is fixedly connected to the oil drain port and an oil return pipe is fixedly connected to the oil return port. A lifting channel is fixedly connected to the bottom of the wind turbine housing, and a lifting mounting plate is slidably connected inside the lifting channel.

[0010] The monitoring and maintenance mechanism, the hoisting and lifting mechanism, and the auxiliary winding mechanism are all located inside the wind turbine housing and the lifting channel.

[0011] The monitoring and maintenance mechanism includes an electrical control box fixedly connected to the top of the lifting mounting plate. A gear pump body is fixedly connected to one side of the electrical control box via a bracket. A detachable filter is fixedly connected to the top of the lifting mounting plate. One end of the drain pipe and the return pipe are both fixedly connected to a pipe fixing joint. One end of the pipe fixing joint at the bottom is fixedly connected to an oil guiding connecting hose, and one end of the pipe fixing joint at the top is fixedly connected to a return connecting hose. One end of the oil guiding connecting hose is fixedly connected to the extraction end of the gear pump body via a connecting elbow. A multi-parameter ferromagnetic particle sensor and a pressure sensor are fixedly connected to the outer wall of the connecting elbow. A guide pipe is fixedly connected to the discharge end of the gear pump body and the outer wall of the detachable filter. A discharge pipe is fixedly connected to the top of the detachable filter and the bottom end of the oil guiding connecting hose. A first external connecting pipe is fixedly connected to the oil guiding connecting hose, and a second external connecting pipe is fixedly connected to the outer wall of the return connecting hose.

[0012] Furthermore, a solenoid valve is fixedly connected to both the oil drain pipe and the oil return pipe, a first solenoid-operated check valve is fixedly connected to both the connecting bend pipe and the discharge pipe, and a second solenoid-operated check valve is fixedly connected to both the first external connecting pipe and the second external connecting pipe.

[0013] Furthermore, when the first electromagnetically operated check valve and the solenoid valve are open and the second electromagnetically operated check valve is closed, the drain pipe, return pipe, oil guide connecting hose, connecting bend and discharge pipe, and return connecting hose form a closed loop. When the first electromagnetically operated check valve and the second electromagnetically operated check valve are open and the first electromagnetically operated check valve is closed, the drain pipe, return pipe, oil guide connecting hose, first external connecting pipe and return connecting hose, and second external connecting pipe form another closed loop.

[0014] Furthermore, the inner wall of the lifting channel is fixedly connected with two pairs of guide sliding columns, and a pair of guide slots are carved on both sides of the lifting mounting plate. The lifting mounting plate is sleeved between the outer walls of the two pairs of guide sliding columns through the two pairs of guide slots, and the inner wall of the guide slot is slidably fitted with the outer wall of the guide sliding column.

[0015] Furthermore, the hoisting mechanism includes a side mounting plate fixedly connected to the inner wall of the wind turbine housing. A hoisting machine is fixedly connected to one side of the side mounting plate, and a wire rope is wound on the drum of the hoisting machine. A U-shaped plate is fixedly connected to the top of the hoisting mounting plate, and an arc-shaped rod is fixedly connected to the top of the U-shaped plate. The wire rope is sleeved on the outer wall of the arc-shaped rod.

[0016] Furthermore, an I-shaped rod is fixedly connected to the outer wall of the hoist, and a first sliding sleeve is fitted on the outer wall of the I-shaped rod. The inner wall of the first sliding sleeve is slidably fitted with the outer wall of the I-shaped rod. An auxiliary roller is fitted on the outer wall of the first sliding sleeve, and the auxiliary roller is rotatably connected to the first sliding sleeve through a bearing. The wire rope is wound around the auxiliary roller, and the outer wall of the wire rope is in close contact with the inner wall of the auxiliary roller.

[0017] Furthermore, the auxiliary winding mechanism includes a servo motor. A connecting plate is fixedly connected to one side of the gearbox body, and the connecting plate is connected to the servo motor. A pair of fixed plates are fixedly connected to one side of the gearbox body, and a winding drum is provided between the pair of fixed plates. Two pairs of guide grooves are chiseled on the outer wall of the winding drum, and one side of the winding drum is rotatably connected to a fixed plate on one side through a rotating shaft and a bearing. The output end of the servo motor is fixedly connected to a rotating shaft on the top winding drum, and the rotating shafts on the two winding drums are connected by transmission. One end of the oil guide hose and the oil return hose pass through the bottom and top guide grooves in sequence, and then through the guide groove on one side to extend into the interior of the winding drum. The fixed plate on the other side is sleeved on the outer wall of the pipe fixing joint, and the winding drum is sleeved on the outer wall of the pipe fixing joint and rotatably connected to it through a bearing.

[0018] Furthermore, pulleys are fitted onto the outer walls of the shafts on both take-up drums, and a drive belt connects the pair of pulleys.

[0019] Furthermore, a fixed sliding rod is fixedly connected between the outer walls of the pair of fixed plates. A second sliding sleeve is fitted on the outer wall of the fixed sliding rod, and the inner wall of the second sliding sleeve slides against the outer wall of the fixed sliding rod. A pair of rings are rotatably connected to the outer walls of the second sliding sleeves through bearings and shafts, and the pair of rings are respectively fitted on the outer walls of the oil guide connecting hose and the oil return connecting hose.

[0020] Furthermore, the outer wall of the lifting channel is provided with a pair of inlet and outlet openings, and each inlet and outlet opening is hinged with a sealing door.

[0021] The present invention has the following advantages over the prior art:

[0022] 1. Dual-loop switching, fast and convenient: This technical solution, through its monitoring and maintenance mechanism, utilizes a closed loop consisting of a drain pipe, return pipe, oil guide hose, connecting bend, discharge pipe, and return hose, along with a parameter ferromagnetic particle sensor, pressure sensor, and removable filter, to monitor and filter oil parameters. Simultaneously, another closed loop, formed by the drain pipe, return pipe, oil guide hose, first external connection pipe, return hose, and second external connection pipe, allows for external flushing and oil change pipelines, enabling internal cleaning and oil replacement of the gearbox. Automatic switching between the two operating modes is achieved through valve combinations, eliminating the need to disassemble sensors or pipelines. This simple and convenient operation significantly reduces time waste, improves efficiency, and lowers costs.

[0023] 2. Automatic lifting and lowering to reduce high-altitude risks: This technical solution uses a winch lifting mechanism to lower the monitoring and maintenance mechanism to the ground for maintenance by means of the forward and reverse rotation of the winch and the transmission of the wire rope. After maintenance, the mechanism can be raised and reset. Personnel do not need to climb to the high altitude inside the wind turbine casing, eliminating the risks of high-altitude climbing and operation and improving safety.

[0024] 3. Synchronous winding and unwinding to ensure unobstructed pipelines: This technical solution, through the auxiliary winding mechanism, uses a pair of servo motors and the forward and reverse rotation of the winding drum to drive the oil guide hose and the oil return hose to be wound and extended synchronously and orderly during the lifting and lowering of the monitoring and maintenance mechanism. This reduces tangling, pulling and messy phenomena, and ensures smooth oil passages in processes such as oil monitoring, flushing and oil changing.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of an integrated online monitoring and filtration device for wind turbine gearbox oil according to the present invention;

[0028] Figure 2 This is a partial cross-sectional schematic diagram of an integrated online monitoring and filtration device for wind turbine gearbox oil according to the present invention;

[0029] Figure 3 This is a partial cross-sectional schematic diagram of the lifting mounting plate and the monitoring and maintenance mechanism in this invention;

[0030] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0031] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0032] Figure 6 This is a partial three-dimensional structural diagram of the lifting mounting plate and the hoisting lifting mechanism in this invention;

[0033] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C;

[0034] Figure 8 This is a partial three-dimensional structural diagram of the gearbox body and the auxiliary winding mechanism in this invention;

[0035] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point D;

[0036] Figure 10 For the present invention Figure 8 Enlarged structural diagram at point E;

[0037] Figure 11 This is a partial cross-sectional view of the gearbox body and auxiliary winding mechanism in this invention.

[0038] Figure 12 For the present invention Figure 11 A magnified structural diagram at point F in the middle.

[0039] The following is a list of components represented by each label in the attached diagram:

[0040] 1. Wind turbine housing; 2. Lifting channel; 3. Gearbox body; 4. Drain pipe; 5. Return pipe; 6. Solenoid valve; 7. Lifting mounting plate; 8. Monitoring and maintenance mechanism; 801. Electrical control box; 802. Gear pump body; 803. Oil guide connecting hose; 804. Pipe fixing joint; 805. Connecting bend; 806. Multi-parameter ferromagnetic particle sensor; 807. Pressure sensor; 808. First electromagnetically operated check valve; 809. Conductor pipe; 8010. Removable filter; 8011. Discharge pipe; 8012. Return pipe; 8013. First external connecting pipe; 8014. Second external... 8015. Connecting pipe; 9. Second electromagnetic one-way valve; 10. Hoisting lifting mechanism; 901. Side mounting plate; 902. Hoisting hoist; 903. Wire rope; 904. Arc rod; 905. I-shaped rod; 906. Auxiliary roller; 907. U-shaped plate; 908. First sliding sleeve; 10. Auxiliary winding mechanism; 1001. Servo motor; 1002. Pulley; 1003. Transmission belt; 1004. Fixing plate; 1005. Winding drum; 1006. Guide groove; 1007. Fixed slide bar; 1008. Second sliding sleeve; 1009. Ring; 11. Connecting plate; 12. Sealing door. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. Specific Implementation Example 1:

[0044] Please see Figures 1-12 As shown, the present invention provides an integrated online monitoring and filtration device for wind turbine gearbox oil, comprising:

[0045] The wind turbine housing 1 and the gearbox body 3 are installed inside the wind turbine housing 1. The gearbox body 3 is provided with an oil drain port and an oil return port on one side. An oil drain pipe 4 is fixedly connected to the oil drain port, and an oil return pipe 5 is fixedly connected to the oil return port. A lifting channel 2 is fixedly connected to the bottom of the wind turbine housing 1, and a lifting mounting plate 7 is slidably connected inside the lifting channel 2.

[0046] The monitoring and maintenance mechanism 8, the hoisting and lifting mechanism 9, and the auxiliary winding mechanism 10 are all located inside the wind turbine housing 1 and the lifting channel 2.

[0047] The monitoring and maintenance mechanism 8 includes an electrical control box 801 fixedly connected to the top of the lifting mounting plate 7. A gear pump body 802 is fixedly connected to one side of the electrical control box 801 via a bracket. A detachable filter 8010 is fixedly connected to the top of the lifting mounting plate 7. One end of the drain pipe 4 and the return pipe 5 are both fixedly connected to a pipe fixing joint 804. One end of the pipe fixing joint 804 at the bottom is fixedly connected to an oil guide connecting hose 803, and one end of the pipe fixing joint 804 at the top is fixedly connected to a return oil connecting hose 8012. One end of the oil guide connecting hose 803 is connected to the gear pump body 802. A connecting bend 805 is fixedly connected between the extraction ends of 02, and a multi-parameter ferromagnetic particle sensor 806 and a pressure sensor 807 are fixedly connected to the outer wall of the connecting bend 805 respectively. A guide pipe 809 is fixedly connected between the discharge end of the gear pump body 802 and the outer wall of the detachable filter 8010. A discharge pipe 8011 is fixedly connected between the top end of the detachable filter 8010 and the bottom end of the oil guide connecting hose 803. A first external connecting pipe 8013 is fixedly connected to the oil guide connecting hose 803, and a second external connecting pipe 8014 is fixedly connected to the outer wall of the return oil connecting hose 8012.

[0048] In the specific implementation process, the electrical control box 801 controls the gear pump body 802 to operate, drawing oil from the gearbox body 3 through the drain pipe 4 to provide power for oil circulation. Then, the oil flows through the oil guide connecting hose 803 to the connecting bend 805 (at this time, both the first external connecting pipe 8013 and the second external connecting pipe 8014 are in a closed state). When flowing through the connecting bend 805, the multi-parameter ferromagnetic particle sensor 806 (in this embodiment, the Shanghai Luowan Industrial LWTD-1001 series integrated online oil monitoring sensor is selected) detects the oil flow. It can detect ferromagnetic particles, and also integrates non-ferromagnetic particle detection (such as wear of bearing materials such as copper and aluminum), trace moisture, temperature, dielectric constant, etc., to detect ferromagnetic particles generated by gear / bearing wear in the oil and other parameters. Pressure sensor 807 monitors oil circuit pressure (to prevent pump overload or pipeline blockage). The oil enters the removable filter 8010 through the guide pipe 809 (built-in fine filter element, accuracy up to 5-10μm). The top of the removable filter 8010 is connected to a flange by hexagonal bolts and nuts, allowing passage through the top. (The filter element is replaced by removing the flange). Particulate impurities are filtered out, and the purified oil flows back through the discharge pipe 8011 to the return oil connection hose 8012, and finally returns to the gearbox body 3 through the return oil connector 5. When oil performance deterioration, excessive contamination, or functional failure is detected, an oil change is required. At this time, the hoisting lifting mechanism 9 drives the monitoring and maintenance mechanism 8 to descend steadily along the lifting channel 2 with the lifting mounting plate 7. Simultaneously, the auxiliary winding mechanism 10 synchronously drives the oil guide connection hose 803 and the return oil connection hose 8012 downwards. And extend, after descending into place (in this embodiment, an external device can be connected for auxiliary determination, such as a proximity switch (XS8C4A1MPG13 oil-resistant inductive proximity switch) or a camera. This method is common knowledge in the prior art and will not be described in detail here), the first external connecting pipe 8013 and the second external connecting pipe 8014 can be connected to a waste oil receiving pipe (in this embodiment, the ends of the first external connecting pipe 8013 and the second external connecting pipe 8014 are both equipped with hydraulic quick couplings (model: KZE-H10L, pressure resistance 31).(5MPa), the connector has a built-in oil-resistant nitrile rubber sealing ring. When connecting to an external flushing / oil change pipeline, simply insert the connector and rotate to lock it to achieve a leak-free seal. The connection time is ≤30 seconds, no additional sealing material is required, and at this time, both the connecting elbow 805 and the discharge pipe 8011 are in a closed state. After the waste oil is discharged, the flushing pipeline can be connected. The flushing is carried out along the closed loop formed by the drain pipe 4, return pipe 5, oil guide connecting hose 803, first external connecting pipe 8013, return connecting hose 8012, and second external connecting pipe 8014 to achieve cleaning of the inside of the gearbox body 3. After flushing, the oil change pipeline on the oil drum or oil truck is connected. Driven by the pump on the oil change pipeline, new oil is delivered to the inside of the gearbox body 3, thereby achieving the replacement of the oil inside the gearbox body 3. There is no need to disassemble the sensor or pipeline. The operation is simple and convenient, greatly reducing time waste, improving efficiency, and reducing costs. After the oil change is completed, the monitoring and maintenance mechanism 8 is lifted and reset again by the hoisting lifting mechanism 9.

[0049] Solenoid valves 6 are fixedly connected to both the oil drain pipe 4 and the oil return pipe 5. A first solenoid-operated check valve 808 is fixedly connected to both the connecting bend pipe 805 and the discharge pipe 8011. A second solenoid-operated check valve 8015 is fixedly connected to both the first external connection pipe 8013 and the second external connection pipe 8014.

[0050] Solenoid valve 6 controls the opening and closing of the oil drain pipe 4 and the oil return pipe 5. The first solenoid-operated check valve 808 enables unidirectional flow and on / off closure of the oil flow inside the connecting bend 805 and the discharge pipe 8011. The second solenoid-operated check valve 8015 (in this embodiment, the first solenoid-operated check valve 808 and the second solenoid-operated check valve 8015 are selected from the TOYOKIHK2 series. During operation, the connecting bend 805 can be connected to an external pressure relief valve (model: HNV-02, opening pressure 0.1MPa). Before the circuit switching, the electrical control box 801 controls the pressure relief valve to open and release the residual pressure in the oil circuit to below 0.05MPa. This is a conventional design and common knowledge in this technical field and will not be described in detail here. No illustration is required.) enables unidirectional flow and on / off closure of the oil flow inside the first external connecting pipe 8013 and the second external connecting pipe 8014.

[0051] When the first electromagnetic check valve 808 and the electromagnetic valve 6 are open and the second electromagnetic check valve 8015 is closed, the drain pipe 4, the return pipe 5, the guide hose 803, the connecting bend 805, the discharge pipe 8011, and the return hose 8012 form a closed loop. When the first electromagnetic check valve 8015 and the electromagnetic valve 6 are open and the first electromagnetic check valve 808 is closed, the drain pipe 4, the return pipe 5, the guide hose 803, the first external connection pipe 8013, the return hose 8012, and the second external connection pipe 8014 form another closed loop.

[0052] By switching between the first electromagnetically operated check valve 808 and the second electromagnetically operated check valve 8015, the system can automatically switch between two working modes: a closed loop (monitoring and filtering) consisting of the drain pipe 4, return pipe 5, oil guide connecting hose 803, connecting bend 805, discharge pipe 8011, and return connecting hose 8012; and a flushing and oil change mode consisting of the drain pipe 4, return pipe 5, oil guide connecting hose 803, first external connecting pipe 8013, return connecting hose 8012, and second external connecting pipe 8014.

[0053] The outer wall of the lifting channel 2 has a pair of inlet and outlet openings, and each inlet and outlet opening is hinged with a sealing door 12.

[0054] The access passage allows staff to easily enter the lifting channel 2 to operate and maintain the monitoring and maintenance mechanism 8, while closing the sealing door 12 can isolate external sand, rain, and insects, protecting the equipment components inside the channel. Specific Implementation Example 2:

[0056] Please see Figures 1-7 As shown, in a preferred embodiment, the hoisting mechanism 9 includes a side mounting plate 901 fixedly connected to the inner wall of the wind turbine housing 1. A hoisting machine 902 is fixedly connected to one side of the side mounting plate 901, and a wire rope 903 is wound on the drum of the hoisting machine 902. A U-shaped plate 907 is fixedly connected to the top of the hoisting mounting plate 7, and an arc-shaped rod 904 is fixedly connected to the top of the U-shaped plate 907. The wire rope 903 is sleeved on the outer wall of the arc-shaped rod 904.

[0057] In the specific implementation process, the winch 902 (the winch 902 is a wind power-specific model (such as JK0.5-6), with a rated tensile force of 800kg, a rated lifting speed of 0.8m / s, a power supply of 380V three-phase AC, a protection level of IP65, and is adapted to the total weight of the monitoring and maintenance mechanism 8; the wire rope 903 is a 6×19S+FC structure with a diameter of Φ10mm, a breaking tensile force ≥50kN, and a safety factor ≥5) rotates forward to tighten the wire rope 903, so that the wire rope 903 pulls the U-shaped plate 907 upward through the arc rod 904, so as to drive the lifting installation plate 7 and the monitoring and maintenance mechanism 8 to rise. When the winch 902 rotates in reverse, it loosens the wire rope 903, and drives the lifting installation plate 7 and the monitoring and maintenance mechanism 8 to descend under their own gravity. This eliminates the need for personnel to climb to the high altitude inside the wind turbine casing 1 during the monitoring and maintenance process, thus eliminating the risks of high-altitude climbing and operation and improving safety.

[0058] The inner wall of the lifting channel 2 is fixedly connected with two pairs of guide slide columns 701. A pair of guide slots 702 are cut on both sides of the lifting mounting plate 7. The lifting mounting plate 7 is sleeved between the outer walls of the two pairs of guide slide columns 701 through the two pairs of guide slots 702, and the inner wall of the guide slot 702 slides and fits against the outer wall of the guide slide column 701.

[0059] The two pairs of guide pins 701 on the inner wall of the lifting channel 2 slide and fit with the guide grooves 702 on both sides of the lifting mounting plate 7, restricting the lifting mounting plate 7 to move only in the vertical direction and making it less prone to deviation.

[0060] The hoist 902 has an I-shaped rod 905 fixedly connected to its outer wall. A first sliding sleeve 908 is fitted on the outer wall of the I-shaped rod 905, and the inner wall of the first sliding sleeve 908 slides and fits against the outer wall of the I-shaped rod 905. An auxiliary roller 906 is fitted on the outer wall of the first sliding sleeve 908, and the auxiliary roller 906 is rotatably connected to the first sliding sleeve 908 through a bearing. A wire rope 903 is wound around the auxiliary roller 906, and the outer wall of the wire rope 903 is in close contact with the inner wall of the auxiliary roller 906.

[0061] When the wire rope 903 is wound or released, it rolls downwards around the auxiliary roller 906 to assist in reducing the impact of friction. At the same time, when the wire rope 903 is wound or released laterally along the drum of the hoist 902, the auxiliary roller 906 slides synchronously along the I-shaped rod 905 through the first sliding sleeve 908 to assist in the winding or release of the wire rope 903 and avoid entanglement. Specific Implementation Example 3:

[0063] Please see Figure 2 and Figures 8-12As shown, in a preferred embodiment, the auxiliary winding mechanism 10 includes a servo motor 1001. A connecting plate 11 is fixedly connected to one side of the gearbox body 3, and the connecting plate 11 is connected to the servo motor 1001. A pair of fixing plates 1004 are fixedly connected to one side of the gearbox body 3, and a winding drum 1005 is provided between the pair of fixing plates 1004. Two pairs of guide grooves 1006 are carved on the outer wall of the winding drum 1005, and one side of the winding drum 1005 is rotatably connected to the fixing plate 1004 on one side through a rotating shaft and a bearing. The output end of 001 is fixedly connected to the rotating shaft on the top take-up drum 1005, and the rotating shafts on the two take-up drums 1005 are connected by transmission. One end of the oil guide connecting hose 803 and the oil return connecting hose 8012 passes through the bottom and top guide grooves 1006 in sequence, and then extends through the guide groove 1006 on one side to the inside of the take-up drum 1005. The fixing plate 1004 on the other side is sleeved on the outer wall of the pipe fixing joint 804. The take-up drum 1005 is sleeved on the outer wall of the pipe fixing joint 804 and is rotatably connected to it through the bearing.

[0064] In the specific implementation process, one end of the oil guide hose 803 and the return oil guide hose 8012 pass through the bottom and top guide grooves 1006 in sequence, and then extend through the guide groove 1006 on one side to the inside of the winding drum 1005, where they are connected to the pipe fixing joint 804. This allows the oil guide hose 803 and the return oil guide hose 8012 to be wound around the winding drum 1005. Then, the hoisting machine 902 and the wire rope 903 drive the lifting installation plate 7 and the monitoring and maintenance mechanism 8 to rise. During descent, the servo motor 1001 drives the two take-up drums 1005 to rotate synchronously through the pulley 1002 and the transmission belt 1003. When the lifting mounting plate 7 and the monitoring and maintenance mechanism 8 are raised, the servo motor 1001 drives the take-up drums 1005 to rotate forward and tighten the oil guide hose 803 and the return oil connection hose 8012. When descending, the reverse rotation releases the oil guide hose 803 and the return oil connection hose 8012. The length of the winding and unwinding is perfectly matched with the lifting height of the lifting mounting plate 7.

[0065] Among them, the outer walls of the shafts on the two take-up drums 1005 are fitted with pulleys 1002, and a transmission belt 1003 is connected between the pair of pulleys 1002.

[0066] Through the transmission between a pair of pulleys 1002 and the drive belt 1003, the two take-up drums 1005 can be driven to rotate synchronously under the drive of the servo motor 1001.

[0067] Among them, a fixed slide rod 1007 is fixedly connected between the outer walls of a pair of fixed plates 1004. A second sliding sleeve 1008 is sleeved on the outer wall of the fixed slide rod 1007, and the inner wall of the second sliding sleeve 1008 slides against the outer wall of the fixed slide rod 1007. The outer walls of the pair of second sliding sleeves 1008 are rotatably connected to a ring 1009 through a bearing and a rotating shaft. The pair of rings 1009 are respectively sleeved on the outer walls of the oil guide connecting hose 803 and the oil return connecting hose 8012.

[0068] When the oil guide hose 803 and the return hose 8012 move along the outer wall of the winding drum 1005 for winding, the second sliding sleeve 1008 on the fixed slide rod 1007 drives the ring 1009 to move with the oil guide hose 803 and the return hose 8012, restricting the lateral displacement of the oil guide hose 803 and the return hose 8012 and avoiding tangling.

[0069] The circuits, electronic components, and chip modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0070] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0071] The working principle of this invention is:

[0072] In use, the electrical control box 801 controls the gear pump body 802 to operate, drawing oil from the gearbox body 3 through the drain pipe 4 to provide power for oil circulation. The oil then flows through the guide hose 803 to the connecting bend 805. At this time, the first electromagnetic check valve 808 opens, the second electromagnetic check valve 8015 closes, and both the first external connecting pipe 8013 and the second external connecting pipe 8014 are closed. As the oil flows through the connecting bend 805, the multi-parameter ferromagnetic particle sensor 806 detects ferromagnetic particles generated by gear / bearing wear and other parameters in the oil. The pressure sensor 807 monitors the oil circuit pressure. The oil continues to flow through the guide pipe 809... The removable filter 8010 filters out particulate impurities. The purified oil flows back to the return oil connection hose 8012 through the discharge pipe 8011, and finally returns to the gearbox body 3 through the return oil pipe 5. When the oil performance deteriorates, the pollution exceeds the standard, or the function fails, the oil needs to be changed. At this time, the hoist 902 reverses, loosens the wire rope 903, and drives the lifting mounting plate 7, electrical control box 801, gear pump body 802 and other components to descend through the arc rod 904 and U-shaped plate 907. During the descent, the servo motor 1001 drives the two winding drums 1005 to reverse synchronously through the pulley 1002 and the transmission belt 1003, releasing the oil guide. The connecting hose 803 and the return oil connecting hose 8012 are retracted to perfectly match the lifting height of the lifting mounting plate 7. After descending to the correct position, the second electromagnetic one-way valve 8015 is activated, the first electromagnetic one-way valve 808 is closed, and the sealing door 12 is opened. Workers then connect the waste oil receiving pipe to the first external connecting pipe 8013 and the second external connecting pipe 8014 to drain the waste oil. After the waste oil is drained, it is connected to the flushing pipe. Flushing is then performed along the closed loop formed by the drain pipe 4, the return oil connecting pipe 5, the oil guiding connecting hose 803, the first external connecting pipe 8013, the return oil connecting hose 8012, and the second external connecting pipe 8014, thus achieving flushing of the inside of the gearbox body 3. After cleaning and rinsing, the oil is connected to the oil change pipeline on the oil drum or oil truck. Driven by the pump on the oil change pipeline, new oil is delivered to the inside of the gearbox body 3, thereby changing the oil inside the gearbox body 3. After the oil change is completed, the winch 902 rotates forward to tighten the wire rope 903, so that the wire rope 903 pulls the U-shaped plate 907 upward through the arc rod 904, driving the lifting mounting plate 7, the electrical control box 801, and the gear pump body 802 to rise and reset. At the same time, the servo motor 1001 drives the winding drum 1005 to rotate forward to tighten the oil guide connecting hose 803 and the oil return connecting hose 8012, which are stored on the two winding drums 1005. Then the sealing door 12 is closed.

[0073] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wind turbine gearbox oil online monitoring and filtering integrated device, characterized in that, Include: The wind turbine shell (1) and gear box body (3), the gear box body (3) is installed in the inside of wind turbine shell (1), and the one side of gear box body (3) is equipped with oil drain and oil return port respectively, the oil drain is fixedly connected with oil drain connection pipe (4), and the oil return port is fixedly connected with oil return connection pipe (5), the bottom end of wind turbine shell (1) is fixedly connected with lifting channel (2), and lifting installation plate (7) is slidably connected in the inside of lifting channel (2); Monitoring maintenance mechanism (8), hoist lifting mechanism (9) and auxiliary winding mechanism (10), monitoring maintenance mechanism (8), hoist lifting mechanism (9) and auxiliary winding mechanism (10) are all arranged in the inside of wind turbine shell (1) and lifting channel (2); Wherein, the monitoring maintenance mechanism (8) includes electric control box (801) fixedly connected on the top end of lifting installation plate (7), the one side of electric control box (801) is fixedly connected with gear pump body (802) through support, the top end of lifting installation plate (7) is fixedly connected with detachable filter (8010), one end of oil drain connection pipe (4) and oil return connection pipe (5) is fixedly connected with pipe fixed connector (804), one end of pipe fixed connector (804) at the bottom is fixedly connected with oil guide connection hose (803), and one end of pipe fixed connector (804) at the top is fixedly connected with oil return connection hose (8012), one end of oil guide connection hose (803) and the extraction end of gear pump body (802) are fixedly connected with connecting elbow (805), and the outer wall of connecting elbow (805) is fixedly connected with multi-parameter ferromagnetic particle sensor (806) and pressure sensor (807) respectively, the discharge end of gear pump body (802) and the outer wall of detachable filter (8010) are fixedly connected with guide pipe (809), the top end of detachable filter (8010) and the bottom end of oil guide connection hose (803) are fixedly connected with discharge pipe (8011), the outer wall of oil guide connection hose (803) is fixedly connected with first external connection pipe (8013), and the outer wall of oil return connection hose (8012) is fixedly connected with second external connection pipe (8014).

2. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 1, characterized in that, The oil drain connection pipe (4) and oil return connection pipe (5) are fixedly connected with electromagnetic valve (6), the connecting elbow (805) and discharge pipe (8011) are fixedly connected with first electromagnetic operation check valve (808), the first external connection pipe (8013) and second external connection pipe (8014) are fixedly connected with second electromagnetic operation check valve (8015).

3. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 2, characterized in that, When the first electromagnetic check valve (808) and the solenoid valve (6) are open and the second electromagnetic check valve (8015) is closed, the drain pipe (4), the return pipe (5), the oil guide connecting hose (803), the connecting bend (805), the discharge pipe (8011), and the return connecting hose (8012) form a closed loop. When the first electromagnetic check valve (8015) and the second electromagnetic check valve (8015) are open and the first electromagnetic check valve (808) is closed, the drain pipe (4), the return pipe (5), the oil guide connecting hose (803), the first external connecting pipe (8013), the return connecting hose (8012), and the second external connecting pipe (8014) form another closed loop.

4. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 1, characterized in that, The inner wall of the lifting channel (2) is fixedly connected with two pairs of guide slides (701). A pair of guide slots (702) are carved on both sides of the lifting mounting plate (7). The lifting mounting plate (7) is sleeved between the outer walls of the two pairs of guide slides (701) through the two pairs of guide slots (702), and the inner wall of the guide slot (702) slides and fits against the outer wall of the guide slide (701).

5. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 1, characterized in that, The hoisting and lifting mechanism (9) includes a side mounting plate (901) fixedly connected to the inner wall of the wind turbine housing (1). A hoisting machine (902) is fixedly connected to one side of the side mounting plate (901), and a wire rope (903) is wound on the drum of the hoisting machine (902). A U-shaped plate (907) is fixedly connected to the top of the lifting mounting plate (7), and an arc rod (904) is fixedly connected to the top of the U-shaped plate (907). The wire rope (903) is sleeved on the outer wall of the arc rod (904).

6. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 5, characterized in that, The outer wall of the hoist (902) is fixedly connected to an I-shaped rod (905). The outer wall of the I-shaped rod (905) is fitted with a first sliding sleeve (908), and the inner wall of the first sliding sleeve (908) is slidably attached to the outer wall of the I-shaped rod (905). The outer wall of the first sliding sleeve (908) is fitted with an auxiliary roller (906), and the auxiliary roller (906) is rotatably connected to the first sliding sleeve (908) through a bearing. The wire rope (903) is wound around the auxiliary roller (906), and the outer wall of the wire rope (903) is in close contact with the inner wall of the auxiliary roller (906).

7. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 1, characterized in that, The auxiliary winding mechanism (10) includes a servo motor (1001). A connecting plate (11) is fixedly connected to one side of the gearbox body (3), and the connecting plate (11) is connected to the servo motor (1001). A pair of fixing plates (1004) are fixedly connected to one side of the gearbox body (3), and a winding drum (1005) is provided between the pair of fixing plates (1004). Two pairs of guide grooves (1006) are chiseled on the outer wall of the winding drum (1005), and one side of the winding drum (1005) is rotatably connected to the fixing plate (1004) on one side through a rotating shaft and bearing. The servo motor (1001) is fixedly connected to the servo motor (1001). 1) The output end is fixedly connected to the rotating shaft on the top take-up drum (1005), and the rotating shafts on the two take-up drums (1005) are connected by transmission. One end of the oil guide connecting hose (803) and the oil return connecting hose (8012) passes through the bottom and top guide grooves (1006) in sequence, and then passes through the guide groove (1006) on one side to extend into the interior of the take-up drum (1005). The fixing plate (1004) on the other side is sleeved on the outer wall of the pipe fixing joint (804). The take-up drum (1005) is sleeved on the outer wall of the pipe fixing joint (804) and is rotatably connected to it through the bearing.

8. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 7, characterized in that, Both of the two take-up drums (1005) have pulleys (1002) sleeved on their outer walls, and a transmission belt (1003) is connected between the pair of pulleys (1002).

9. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 7, characterized in that, A fixed slide rod (1007) is fixedly connected between the outer walls of a pair of fixed plates (1004). A second sliding sleeve (1008) is sleeved on the outer wall of the fixed slide rod (1007), and the inner wall of the second sliding sleeve (1008) slides against the outer wall of the fixed slide rod (1007). A pair of rings (1009) are rotatably connected to the outer walls of the second sliding sleeves (1008) through bearings and shafts. The pair of rings (1009) are respectively sleeved on the outer walls of the oil guide connecting hose (803) and the oil return connecting hose (8012).

10. The wind turbine gearbox oil on-line monitoring and filtering integrated device according to claim 1, characterized in that, The outer wall of the lifting channel (2) has a pair of inlet and outlet openings, and each inlet and outlet opening is hinged with a sealing door (12).

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