Wind turbine yaw system brake disc pneumatic cleaning assembly

Abstract

The utility model provides a kind of wind power yaw system brake disc pneumatic cleaning assembly.The wind power yaw system brake disc pneumatic cleaning assembly includes multiple brakes and multiple the cleaner that are side by side in the bottom of cabin, and brake disc is arranged at the top of tower tube, the brake includes brake shell, piston and friction plate being arranged in its inner side, and hydraulic connector being arranged in its outer side, the cleaner includes cleaning shell, spray head being arranged in its inner side, and gas supply connector being arranged in its outer side, the structure of brake shell and the cleaning shell is consistent.The wind power yaw system brake disc pneumatic cleaning assembly provided by the utility model solves the problem that the existing wind power yaw system brake disc cleaning assembly is not effective.

Description

Technical Field

[0001] This utility model relates to the field of wind power hybrid towers, specifically to a pneumatic cleaning component for the brake disc of a wind power yaw system. Background Technology

[0002] To ensure wind turbines maintain maximum wind energy absorption efficiency, a yaw system is commonly installed to adjust the rotor's orientation. The yaw system monitors wind direction in real time via a weather vane. When the wind direction changes and exceeds a certain threshold, the yaw system drives the nacelle to rotate the rotor until it faces the wind, maximizing wind energy capture and improving power generation efficiency. The braking system within the yaw system typically includes two braking mechanisms: an electromagnetic brake and a hydraulic brake. The hydraulic brake uses hydraulic pressure to drive friction pads within the caliper to rub against the brake disc, generating a braking effect. The caliper and brake disc are installed in the nacelle and tower respectively. Replacing the friction pads in the caliper is relatively convenient, but replacing the brake disc requires removing the entire turbine from the wind turbine, resulting in significant maintenance costs and workload. Therefore, many turbines now use separate brake discs, which can be replaced within the nacelle. However, separate brake discs lead to more wear debris on the friction pads, shortening the brake disc's lifespan and reducing braking performance. Therefore, cleaning components are now commonly installed alongside the caliper to clean the brake disc surface promptly. Existing cleaning components generally use brush or roller structures to achieve the cleaning function. After prolonged use, the cleaning structure itself will also be covered with abrasive particles, resulting in poor cleaning effect. Utility Model Content

[0003] To address the problem of ineffective cleaning components for the brake discs of existing wind turbine yaw systems, this invention provides a pneumatic cleaning component for the brake discs of wind turbine yaw systems that solves the aforementioned problem.

[0004] A pneumatic cleaning assembly for a wind turbine yaw system brake disc includes multiple brakes and multiple cleaners arranged side-by-side at the bottom of the nacelle, and a brake disc located at the top of the tower. Each brake includes a brake housing, a piston and friction pads located on its inner side, and a hydraulic connector located on its outer side. Each cleaner includes a cleaning housing, a nozzle located on its inner side, and an air supply connector located on its outer side. The brake housing and the cleaning housing have the same structure.

[0005] In a preferred embodiment of the pneumatic cleaning assembly for the brake disc of the wind power yaw system provided by this utility model, both the brake housing and the cleaning housing are clamp-shaped structures, located inside the brake disc and extending to both sides of the brake disc; a set of pistons and friction plates are respectively provided on the inner side of the brake housing near both sides of the brake disc, and a nozzle is respectively provided on the inner side of the cleaning housing near both sides of the brake disc.

[0006] In a preferred embodiment of the pneumatic cleaning assembly for the brake disc of the wind power yaw system provided by this utility model, the nozzle includes a mounting base and a movable rubber plug. The mounting base is threadedly connected to the cleaning housing and has multiple openings for installing the movable rubber plug.

[0007] The mounting base has a disc-shaped structure with threads on its edge for connection to the cleaning housing. It has multiple blind holes on its front edge and multiple openings in the central area. The movable rubber plug has a bowl-shaped structure with an outwardly flared and thickened top edge and radial cuts at the bottom. The bottom of the movable rubber plug is inserted into the opening of the mounting base, its outer side abuts against the opening, and its top abuts against the back of the mounting base.

[0008] In a preferred embodiment of the pneumatic cleaning component for the brake disc of the wind power yaw system provided by this utility model, the hydraulic connector is connected to the hydraulic unit located in the nacelle, and the air supply connector is connected to the pneumatic unit located in the nacelle.

[0009] In a preferred embodiment of the pneumatic cleaning assembly for the brake disc of a wind power yaw system provided by this utility model, the pneumatic unit includes a compressor, a one-way valve, a pressure accumulator cylinder, and a solenoid valve connected in sequence, with the solenoid valve pipe connected to the cleaning housing. A first separator is provided in the pipe between the compressor and the one-way valve, and a second separator is provided in the pipe between the pressure accumulator cylinder and the solenoid valve.

[0010] Compared with existing technologies, the pneumatic cleaning assembly for the brake disc of the wind power yaw system provided by this utility model has the following beneficial effects:

[0011] 1. The solution provided by this utility model uses compressed air to clean the brake disc, which can prevent abrasive debris from adhering to the cleaning mechanism itself and affecting the cleaning effect. Furthermore, the use of instantaneously released pulsed airflow to impact the brake disc results in a better cleaning effect.

[0012] 2. The cleaner and brake have the same structure in the solution provided by this utility model, making production and installation more convenient. The cleaner uses a self-resetting movable rubber stopper for covering, preventing abrasive debris from entering the cleaner's interior. The nozzle in the cleaner is easy to replace, making maintenance convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the pneumatic cleaning assembly for the brake disc of a wind power yaw system;

[0014] Figure 2 This is a structural diagram of the brake and the cleaner;

[0015] Figure 3 This is a schematic diagram of the nozzle structure in Example 1;

[0016] Figure 4 This is a schematic diagram of the pneumatic unit;

[0017] Figure 5 This is a schematic diagram of the nozzle structure in Example 2.

[0018] The following components are labeled in the diagram: Tower 1, Brake disc 2, Bearing 3, Brake 5, Housing 51, Piston 52, Friction plate 53, Hydraulic connector 54, Cleaner 6, Cleaning housing 61, Nozzle 62, Mounting base 621 and movable rubber plug 622, Blind hole 623, Cover plate 624, Air supply connector 63, Compressor 81, First separator 82, Check valve 83, Pressure accumulator cylinder 84, Second separator 85, Solenoid valve 86. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1: Please also refer to Figures 1 to 4 These are schematic diagrams of the pneumatic cleaning assembly for the brake disc of the wind power yaw system provided by this utility model, the brake and cleaner, the nozzle, and the air pressure unit. Figure 2 -a is a schematic diagram of the brake. Figure 2 -b is a schematic diagram of the cleaner's structure. Figure 3 -a is a structural diagram of the front of the nozzle. Figure 3 -b is a schematic diagram of the structure on the back of the nozzle.

[0021] The pneumatic cleaning assembly for the wind turbine yaw system brake disc includes a brake 5, a brake disc 2, and a cleaner 6. The brake disc 2, bearing 3, and nacelle are sequentially arranged at the top of the tower 1. Multiple brakes 5 and multiple cleaners 6 are arranged side-by-side at the bottom of the nacelle, near the inner side of the brake disc 2. A hydraulic unit and a pneumatic unit are also located within the nacelle. The hydraulic unit supplies hydraulic oil to all brakes 5, and the pneumatic unit supplies compressed air to all cleaners 6.

[0022] The brake 5 is an existing product, comprising a brake housing 51, pistons 52, friction pads 53, and a hydraulic connector 54. The brake housing 51 is mounted at the bottom of the engine compartment, located inside the brake disc 2, and extends to both the upper and lower surfaces of the brake disc 2. A set of pistons 52 and friction pads 53 are respectively located on the inner side of the brake housing 51 near both sides of the brake disc 2, and a hydraulic connector 54 is located on the outer side, connecting to a hydraulic unit. The hydraulic unit drives the pistons 52 to extend, causing the friction pads 53 to rub against the brake disc 2 to generate braking force; or drives the pistons 52 to retract, stopping the braking.

[0023] The cleaner 6 includes a cleaning housing 61, a nozzle 62, and an air supply connector 63. The cleaning housing 61 has the same structure as the brake housing 51 to simplify manufacturing and installation. The cleaning housing 61 is installed together with the brake housing 51 at the bottom of the engine compartment, also located inside the brake disc 2, and extends to both the upper and lower surfaces of the brake disc 2. The cleaning housing 61 has internal threads machined at the locations where the piston 52 is mounted for mounting the nozzle 62. At the locations corresponding to the hydraulic connector 54, an air supply connector 63 is installed, connecting to the pneumatic unit. Compressed air supplied by the pneumatic unit is ejected from the nozzle 62, blowing away the abrasive debris on the surface of the brake disc 2 to achieve the cleaning function.

[0024] The nozzle 62 includes a mounting base 621 and a movable rubber plug 622. The mounting base 621 has a disc-shaped structure with threads on its edge for connection with the cleaning housing 61. Four blind holes 623 are located near the edge of the front of the mounting base 621 for inserting tools to lock it in place, similar to the assembly and disassembly method of equipment such as angle grinders, and will not be described further. Multiple openings are located in the middle area of ​​the mounting base 621; adhesive is applied to the outer wall of the piston rubber plug 622, which is then inserted into these openings for fixation.

[0025] The movable rubber stopper 622 has a bowl-shaped structure with an outwardly flared and thickened top edge and a cross-shaped notch at the bottom. After the movable rubber stopper 622 is inserted into the opening of the mounting base 621, the thickened top area abuts against the back of the mounting base 621 for restraint. Airflow can be ejected from the cross-shaped notch of the movable rubber stopper 622, and the cross-shaped notch automatically resets after the airflow stops, providing a shielding function.

[0026] The pneumatic unit includes a compressor 81, a first separator 82, a one-way valve 83, a pressure accumulator 84, a second separator 85, and a solenoid valve 86 connected in sequence. The solenoid valve 86 is connected to the air supply connector 63. The compressor 81 supplies pressure to the pressure accumulator 84 and maintains the pressure within a set range. During cleaning operations, the solenoid valve 86 opens and closes multiple times instantaneously, thereby forming multiple impact airflows to clean the brake disc 2, which is more effective than continuous airflow cleaning.

[0027] The first separator 82 and the second separator 85 are used to separate impurities such as moisture in the gas, so as to prevent impurities from having a negative impact on the brake disc 2 along with the impact airflow.

[0028] Example 2: Please refer to Figure 5 , is a schematic diagram of the nozzle structure in this embodiment. Figure 5 -a is a structural diagram of the front of the nozzle. Figure 5 -b is a schematic diagram of the structure on the back of the nozzle.

[0029] The difference from Embodiment 1 is that an annular cover plate 624 is added to the back of the nozzle to press and fix the thickened area on the top of the movable rubber plug 622 to prevent the movable rubber plug 622 from slipping off.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pneumatic cleaning assembly for a wind turbine yaw system brake disc, comprising a plurality of brakes located at the bottom of the nacelle and a brake disc located at the top of the tower, wherein each brake comprises a brake housing, a piston and friction pad located on its inner side, and a hydraulic connector located on its outer side, characterized in that: It also includes multiple cleaners, which are arranged side by side with multiple brakes at the bottom of the cabin. Each cleaner includes a cleaning housing, a nozzle located inside it, and an air supply connector located outside it. The brake housing has the same structure as the cleaning housing.

2. The pneumatic cleaning assembly for the brake disc of the wind power yaw system according to claim 1, characterized in that: Both the brake housing and the cleaning housing are clamp-shaped structures, located inside the brake disc and extending to both sides of the brake disc; a set of pistons and friction plates are respectively provided on the inner side of the brake housing near the two sides of the brake disc, and a nozzle is respectively provided on the inner side of the cleaning housing near the two sides of the brake disc.

3. The pneumatic cleaning assembly for the brake disc of the wind power yaw system according to claim 2, characterized in that: The nozzle includes a mounting base and a movable rubber plug. The mounting base is threadedly connected to the cleaning housing and has multiple openings for installing the movable rubber plug.

4. The pneumatic cleaning assembly for the brake disc of the wind power yaw system according to claim 3, characterized in that: The mounting base is a disc-shaped structure with threads on its edge to connect with the cleaning housing. It has multiple blind holes on the front edge and multiple openings in the middle area.

5. The pneumatic cleaning assembly for the brake disc of a wind power yaw system according to claim 3, characterized in that: The movable rubber stopper has a bowl-shaped structure with an outwardly widened and thickened top edge and radial cuts at the bottom. The bottom of the movable rubber stopper is inserted into the opening of the mounting base, the outer side of which is pressed against the opening of the mounting base, and the top of which abuts against the back of the mounting base.

6. The pneumatic cleaning assembly for the brake disc of a wind power yaw system according to claim 1 or 2, characterized in that: The hydraulic connector is connected to the hydraulic unit located in the engine room, and the air supply connector is connected to the air pressure unit located in the engine room.

7. The pneumatic cleaning assembly for the brake disc of a wind power yaw system according to claim 6, characterized in that: The pneumatic unit includes a compressor, a one-way valve, a pressure storage cylinder, and a solenoid valve connected in sequence, with the solenoid valve pipe connected to the cleaning housing.

8. The pneumatic cleaning assembly for the brake disc of a wind power yaw system according to claim 7, characterized in that: The pipeline between the compressor and the one-way valve is provided with a first separator, and the pipeline between the pressure storage cylinder and the solenoid valve is provided with a second separator.

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