A safety device for cleaning carbon powder of a fan yaw brake disc

Abstract

The utility model discloses a kind of safety devices of fan yaw brake disc carbon powder cleaning, it is related to wind turbine yaw technical field, including yaw brake disc, cleaning mechanism, dust collection mechanism and carbon powder collection mechanism, yaw brake disc is located below cleaning mechanism, cleaning mechanism is connected with the cabin platform outside, and when yaw, cabin platform drives cleaning mechanism to rotate and clean the carbon powder on the yaw brake disc fixed below it;Dust collection mechanism includes dust collection body and dust collection nozzle, one end of dust collection nozzle is connected with one end of dust collection body through pipeline, the other end of dust collection body is connected with carbon powder collection mechanism through pipeline, the other end of dust collection nozzle is located above yaw brake disc;Start cleaning and dust collection instruction, then carbon powder is sucked into pipeline by dust collection mechanism until stored into carbon powder collection mechanism. The utility model improves cleaning efficiency by using the combined mode of active dust collection and passive cleaning.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine yaw technology, and in particular to a safety device for cleaning carbon dust from the yaw brake disc of a wind turbine. Background Technology

[0002] Currently, carbon dust generated by wind turbine yaw brake pads is mainly cleaned manually, a method that is inefficient and difficult to completely remove. Carbon dust accumulation leads to accelerated brake disc wear, frequent yaw vibration failures, and consequently affects the wind turbine's power generation efficiency and safety during malfunctions. During turbine operation, carbon dust can also accumulate on the yaw platform, mixing with oil and becoming difficult to clean, increasing maintenance costs and workload.

[0003] For example, Chinese utility model patent CN213134151U discloses an automatic collection device for friction powder from wind turbine yaw brake pads. Its technical solution includes a powder cleaning component and a powder collection component; the powder cleaning component and the powder collection component are connected to the wind turbine frame; the powder cleaning component is connected to a yaw soft starter; during wind turbine yaw and cable unwinding, after receiving a control signal from the yaw soft starter, the powder cleaning component cleans the friction powder generated by the yaw brake pads, and the powder collection component collects the cleaned powder from the powder cleaning component. However, the aforementioned problems still exist.

[0004] Therefore, there is a need to develop a safety device for cleaning carbon dust from the yaw brake disc of a wind turbine, which can effectively solve the aforementioned existing problems and reduce maintenance workload. Utility Model Content

[0005] To address the existing problems, this utility model provides a safety device for cleaning carbon powder from the yaw brake disc of a wind turbine.

[0006] To achieve the objectives of this utility model, the technical solution adopted is as follows:

[0007] A safety device for cleaning toner from a wind turbine yaw brake disc includes a yaw brake disc, a cleaning mechanism, a dust collection mechanism, and a toner collection mechanism. The yaw brake disc is located below the cleaning mechanism, which is connected to an external nacelle platform. When yawing, the nacelle platform drives the cleaning mechanism to rotate and clean the toner fixed on the yaw brake disc below it. The dust collection mechanism includes a dust collection body and a dust collection nozzle. One end of the dust collection nozzle is connected to one end of the dust collection body via a pipe, and the other end of the dust collection body is connected to the toner collection mechanism via a pipe. The other end of the dust collection nozzle is located above the yaw brake disc. When the cleaning and dust collection commands are activated, the toner is sucked into the pipe through the dust collection mechanism until it is stored in the toner collection mechanism.

[0008] Furthermore, based on the above technical solution, a check valve is also provided on the pipe between the dust collection body and the toner collection mechanism.

[0009] Based on the above technical solution, the cleaning mechanism is further defined as an H-shaped aluminum alloy brush.

[0010] Based on the above technical solution, the power of the vacuuming mechanism is 3280W and the voltage is 220VAC.

[0011] Based on the above technical solution, furthermore, when yaw is started, there are three working conditions: left yaw, right yaw, and unmooring. During the yaw process, the cleaning mechanism cleans the carbon powder on the brake disc, and the dust collection mechanism is started by soft start, which works in conjunction with the cleaning mechanism to collect and store dust.

[0012] Based on the above technical solution, the soft starter further includes a DC contactor, wherein one port of the DC contactor is connected to the main circuit, and the power supply of the dust collection mechanism is connected to one port of the DC contactor.

[0013] Based on the above technical solution, the main circuit further comprises a dust extraction mechanism, a leakage current protector, and a switch.

[0014] Based on the above technical solution, further, in the left yaw state, the control circuit starts left yaw, at which time the DC contactor is energized and engaged, and the dust collection mechanism works.

[0015] Based on the above technical solution, further, in the right yaw state, the control circuit starts right yaw, the DC contactor is energized and engaged, and the DC contactor engages the dust collection mechanism to work.

[0016] Based on the above technical solution, further, in the uncoupling state, the control circuit is activated to start uncoupling, the DC contactor is energized and engaged, and the DC contactor engages the dust collection mechanism to work.

[0017] Compared with the prior art, the beneficial effects of this utility model are specifically reflected in:

[0018] (1) Based on the operating environment and maintenance status of the yaw brake disc of the wind turbine, this utility model addresses the problem that most of the current passive scraper cleaning carbon powder cleaning methods on the market have poor effect and low safety. This device breaks through the key technical bottleneck of existing wind turbine yaw brake disc carbon powder cleaning and collection by adopting a combination of active dust collection and passive sweeping, thereby improving the cleaning efficiency and achieving the goal of preventing the brake disc from wearing out due to carbon powder accumulation, causing frequent yaw vibration failures and affecting the power generation efficiency of the wind turbine. At the same time, it reduces the risk of failure and improves the overall safety of the device. Attached Figure Description

[0019] Figure 1 This is a simplified structural diagram of the device of this utility model;

[0020] Figure 2 This is the circuit diagram corresponding to the dust collection mechanism of this utility model;

[0021] Figure 3 This is the circuit diagram of the soft-start control circuit corresponding to the device of this utility model.

[0022] Reference numerals: 1. Yaw brake disc; 2. Cleaning mechanism; 3. Vacuum nozzle; 4. Vacuum body; 5. Pipe; 6. Check valve; 7. Toner collection mechanism. Detailed Implementation

[0023] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0025] In the description of this utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0026] Example

[0027] Combination Figure 1As shown, this embodiment provides a safety device for cleaning toner from a wind turbine yaw brake disc. It includes a yaw brake disc, a cleaning mechanism, a vacuuming mechanism, and a toner collection mechanism. The cleaning mechanism is located above the yaw brake disc and is connected to the lower part of the nacelle platform. When yawing, the nacelle platform drives the cleaning mechanism to rotate and clean the toner fixed on the yaw brake disc below it. The vacuuming mechanism includes a vacuum body and a vacuum nozzle. One end of the vacuum nozzle is connected to one end of the vacuum body via a pipe, and the other end of the vacuum body is connected to the toner collection mechanism via a pipe. The other end of the vacuum nozzle is located above the yaw brake disc. Furthermore, a check valve is installed on the pipe between the vacuum body and the toner collection mechanism. When the cleaning and vacuuming commands are activated, the toner is sucked into the pipe through the vacuuming mechanism until it is stored in the toner collection mechanism. It should be noted that the cleaning mechanism can be an H-type aluminum alloy brush.

[0028] In this embodiment, the materials used in the device are described below:

[0029] ①The cleaning mechanism is preferably an H-shaped aluminum alloy brush, the support of which is preferably made of aluminum, and the bristles are preferably made of PVC nylon; the overall dimensions are preferably 13cm in length, 5mm in thickness, and 5cm in height.

[0030] ② The preferred material for the pipe is PVC flexible hose; the preferred dimensions are an outer diameter of 32mm and a length of 5m.

[0031] ③ The material of the vacuum nozzle is preferably PVC, and the shape is preferably rectangular; the suction surface is preferably 130mm in length and 15mm in width;

[0032] ④ The preferred power of the vacuuming mechanism is 3280W, and the preferred voltage is 220VAC;

[0033] ⑤ The preferred material for the check valve is PVC; the preferred size is an inner diameter of 32mm;

[0034] ⑥ The preferred material for the toner collection mechanism is filter non-woven fabric; the preferred dimensions are a length of 38cm and a width of 22cm.

[0035] Reference Figure 2 and Figure 3 As shown, in this embodiment, there are three operating conditions when yaw is initiated: left yaw, right yaw, and unmooring. The left and right yaw conditions generate residual pressure, thus producing a large amount of toner, while the unmooring condition generates no pressure, resulting in only a small amount of toner.

[0036] Furthermore, during yaw, the cleaning mechanism cleans the carbon powder on the brake disc, and the vacuuming mechanism starts via a soft start, coordinating with the cleaning mechanism to collect and store the dust. The soft start is composed of a DC contactor (model: HCH8s-25 40 63 25A) combined with other control circuits. Port 1 / 3 of this DC contactor (110k9) is connected to the 106X8 L / N port of the main circuit. The power supply for the vacuuming mechanism is connected to port 2 / 4 of the DC contactor (110k9). The positive terminal of the DC contactor (110k9) control terminal is connected to port 110k3 24, and the negative terminal is connected to the 0VDC 2.2 port. Specifically, this main circuit refers to... Figure 2 As shown, it consists of a vacuuming mechanism M, a leakage current protector 106F6.1, and a switch 106F6. When the main controller issues a yaw command, the yaw enable 110K3 is activated, 24V is supplied to port 24 of 110k3, the DC contactor (110k9) closes, and the vacuuming device is energized to vacuum.

[0037] It should be noted that, in combination Figure 2 and Figure 3 The following provides a detailed explanation of the circuit element symbols:

[0038] M indicates the vacuuming mechanism; 110K9 indicates a DC contactor; 106F6.1 indicates a residual current device (RCD); 106F6 indicates a switch; L1, L2, and L3 indicate different live wires; N indicates the neutral wire; L indicates the main live wire; 102Q3 / 102Q8 / 103Q3 / 103Q8 indicate different circuit breakers; 129K4 / 110K3 indicate different relays; 140DI9 / 140DI8 / 141DO1 / 141DO5 indicate different Beckhoff module channels, where 140DI... 9 / 140DI8 represents the input channel (emitting a 24VDC signal), 141DO1 / 141DO5 represents the output channel (emitting a 24VDC signal); 110k3 / 111k3 / 110k10 / 110k8 / 110k6 represent different contacts on the relay that control the left-hand deflection state; 110K3 / 111K3 / 110K12 / 110K6 / 110K8 represent different contacts on the relay that control the right-hand deflection state; A1 and A2 represent different terminals of the relay coil;

[0039] Specifically, based on the principle of soft-start control, the control situations for the three states of left yaw, right yaw, and unmooring are explained:

[0040] Reference Figure 3 As shown, in the left yaw state, the control circuit initiates left yaw, at which point the DC contactor 110k9 is energized and engaged, referring to... Figure 2 At this time, the DC contactor 110K9 in the main circuit engages the dust collection mechanism.

[0041] In the right yaw state, the control circuit initiates right yaw, and DC contactor 110K9 is energized and engaged, referencing... Figure 2 The DC contactor 110K9 in the main circuit engages the dust collection mechanism.

[0042] In the uncoupling state, the control circuit initiates uncoupling, and DC contactor 110K9 is energized and engaged, as per reference. Figure 2 The DC contactor 110K9 in the main circuit engages the dust collection mechanism.

[0043] The above are merely embodiments of this utility model, described in a relatively specific and detailed manner, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A safety device for cleaning carbon powder from a wind turbine yaw brake disc, characterized in that, It includes a yaw brake disc, a cleaning mechanism, a vacuuming mechanism, and a toner collection mechanism. The yaw brake disc is located below the cleaning mechanism, which is connected to an external cabin platform. When yawing, the cabin platform drives the cleaning mechanism to rotate and clean the toner fixed on the yaw brake disc below it. The vacuuming mechanism includes a vacuum body and a vacuum nozzle. One end of the vacuum nozzle is connected to one end of the vacuum body through a pipe, and the other end of the vacuum body is connected to the toner collection mechanism through a pipe. The other end of the vacuum nozzle is located above the yaw brake disc. When the cleaning and vacuuming command is activated, the toner is sucked into the pipes through the vacuuming mechanism until it is stored in the toner collection mechanism.

2. The safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 1, characterized in that, A check valve is also installed on the pipe between the vacuum cleaner body and the toner collection mechanism.

3. The safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 1, characterized in that, The cleaning mechanism is an H-shaped aluminum alloy brush.

4. The safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 1, characterized in that, The vacuuming mechanism has a power of 3280W and a voltage of 220VAC.

5. The safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 1, characterized in that, When yaw is started, there are three working conditions: left yaw, right yaw, and unmooring. During the yaw process, the cleaning mechanism cleans the carbon powder on the brake disc, and the dust collection mechanism is started by soft start and works with the cleaning mechanism to collect and store dust.

6. The safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 5, characterized in that, The soft starter includes a DC contactor, wherein one port of the DC contactor is connected to the main circuit, and the power supply of the dust collection mechanism is connected to one port of the DC contactor.

7. A safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 6, characterized in that, The main circuit consists of a dust extraction mechanism, a leakage current protector, and a switch.

8. A safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 7, characterized in that, In the left yaw state, the control circuit starts left yaw, the DC contactor is energized and engaged, and the dust collection mechanism starts working.

9. A safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 7, characterized in that, In the right yaw state, the control circuit starts right yaw, the DC contactor is energized and engages, and the dust collection mechanism works.

10. A safety device for cleaning carbon powder from a wind turbine yaw brake disc according to claim 7, characterized in that, When the cable is untied, the control circuit starts untiing, the DC contactor is energized and engages, and the dust collection mechanism starts working.

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