Retired wind power equipment multi-component resource recycling method and device

Abstract

The disclosure provides a kind of decommissioned wind power equipment multi-component resource recycling method and device, method includes: according to the design life of each component in wind power equipment, real-time damage and failure damage, obtain the component remaining life of each component in wind power equipment;According to the component remaining life of each component in wind power equipment, obtain the unit remaining life of wind power equipment, and when the unit remaining life of wind power equipment is lower than preset value, wind power equipment is decommissioned;The processing and removal of each component of decommissioned wind power equipment;Quality detection is carried out to the removed component, and when the quality of component is not up to standard, cutting route planning and cutting parameter determination are carried out to the component, and the component is cut and decomposed according to the planned cutting route and determined cutting parameter;The sorted and recycled material is decomposed.In the decommissioned wind power equipment multi-component resource recycling method and device of the disclosure, the high-quality recycling of multi-component resources in decommissioned wind power equipment is realized.

Description

Technical Field

[0001] This disclosure relates to the field of wind power equipment technology, and in particular to a method and apparatus for recovering multi-component resources from decommissioned wind power equipment. Background Technology

[0002] Wind power technology is a renewable energy technology that converts wind energy into electricity. Its core is the wind turbine equipment, mainly composed of gearboxes, generators, and blades. It boasts advantages such as zero carbon emissions and economic viability, and is gradually becoming an important support for energy transition. As wind turbine equipment continues to be deployed, early-operated wind turbines are gradually entering their retirement phase. These retired units include large structural components such as towers and blades, as well as various recyclable resources such as steel, fiberglass, permanent magnets, plastics, cables, and electrical components, demonstrating significant recycling value.

[0003] However, the current recycling of decommissioned wind power equipment lacks a scientific decommissioning assessment system, making it impossible to accurately determine the timing of recycling. This leads to problems such as resource waste caused by premature dismantling or safety hazards caused by exceeding the service life. In addition, the recycling chain is incomplete, resulting in low recycling quality of wind power equipment. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a method and apparatus for recovering multi-component resources from decommissioned wind power equipment.

[0006] To achieve the above objectives, the first aspect of this disclosure provides a method for multi-component resource recycling of decommissioned wind power equipment, comprising: obtaining the component remaining life of each component in the wind power equipment based on the design life, real-time damage amount, and failure damage amount of each component; obtaining the unit remaining life of the wind power equipment based on the component remaining life of each component, and decommissioning the wind power equipment when the unit remaining life of the wind power equipment is lower than a preset value; processing and dismantling each component of the decommissioned wind power equipment; performing quality inspection on the dismantled components, and when the quality of the components is substandard, planning a cutting route and determining cutting parameters for the components, and cutting and decomposing the components according to the planned cutting route and determined cutting parameters; and sorting and recycling the decomposed materials.

[0007] Optionally, the method further includes: obtaining an economic life threshold for the wind power equipment based on its cumulative cost, cumulative revenue, and net profit from disposal; comparing the economic life threshold with a preset value and the remaining life of the wind power unit; and retiring the wind power equipment when its remaining life is less than the economic life threshold; wherein the economic life threshold is determined by the following formula: The L 经济寿命阈值 Let C(t) be the economic life threshold of the wind turbine, C(t) be the marginal cost function for the continued operation of the wind turbine, R(t) be the marginal revenue function for the continued operation of the wind turbine, and V be the marginal cost function for the continued operation of the wind turbine. 净 This refers to the net profit from the disposal of resources after the wind power equipment is decommissioned.

[0008] Optionally, the method further includes: identifying key components in the wind turbine, and decommissioning the wind turbine when the real-time damage to the key components is not less than the failure damage and the key components cannot be repaired; and / or determining the design life and mandatory retirement age of the wind turbine, and decommissioning the wind turbine when the life of the wind turbine is not less than the design life of the wind turbine, and / or the life of the wind turbine is not less than the mandatory retirement age of the wind turbine.

[0009] Optionally, the method further includes: determining the lifespan correction coefficients for each component of the wind turbine based on the environmental parameters of the wind turbine; correcting the remaining lifespan of the components based on the lifespan correction coefficients; determining the weighting coefficients for each component of the wind turbine; and obtaining the remaining lifespan of the wind turbine unit based on the corrected remaining lifespan of each component and the weighting coefficients of each component; wherein the remaining lifespan of the wind turbine unit is: L 机组剩余寿命 =∑(w i ×γ env，i ×L 组件剩余寿命,i );L 机组剩余寿命 The remaining lifespan of the wind turbine unit, w i γ is the weighting coefficient of the component. env，i The component's lifespan correction factor is used; the remaining lifespan of each component in the wind power equipment is: Component design life, i; where L component remaining life, i is the component remaining life, Δdamage is the real-time damage of the component, Δinvalid is the failure damage of the component, and L component design life, i is the design life of the component.

[0010] Optionally, the processing and dismantling of the various components of the decommissioned wind turbine includes: performing closed-loop oil extraction on the hydraulic system and gearbox of the decommissioned wind turbine to drain the waste oil, and disconnecting the electrical system and communication lines of the decommissioned wind turbine; dismantling the blades, hub, nacelle cover, main shaft, gearbox, hydraulic device, generator, converter, and yaw system of the decommissioned wind turbine in sequence from the outside to the inside and from top to bottom, wherein, when dismantling the blades, the blades to be dismantled are locked in the feathering position, and two sets of bolts are simultaneously removed along the diagonal direction of the blade root flange; dismantling the internal components of the tower and the tower section of the decommissioned wind turbine in sections, wherein, when dismantling the tower section, a vertical lifting force is applied to the tower section, and two sets of bolts are simultaneously removed along the diagonal direction of the tower section flange.

[0011] Optionally, the method further includes: performing quality inspection on the dismantled gearbox, and cutting and disassembling the gearbox when the gear wear of the gearbox is greater than a wear threshold, and / or when the bearing clearance of the gearbox is greater than a first clearance threshold; and / or performing quality inspection on the dismantled generator, and cutting and disassembling the generator when the insulation resistance of the generator is less than a first resistance threshold, and / or when the eccentricity of the generator is greater than an eccentricity threshold; and / or performing quality inspection on the dismantled converter, and cutting and disassembling the converter when the withstand voltage value of the converter decreases by a proportion greater than a first proportion threshold; and / or Alternatively, the dismantled yaw system may be subjected to quality inspection, and if the bearing clearance of the yaw system is greater than a second clearance threshold, and / or the braking torque of the yaw system is less than a torque threshold, the yaw system may be cut and disassembled; and / or, the dismantled electrical components may be subjected to quality inspection, and if the contact resistance of the electrical components is greater than a second resistance threshold, and / or the insulation layer thickness of the electrical components is less than a thickness threshold, the electrical components may be cut and disassembled; and / or, the dismantled permanent magnet generator may be subjected to quality inspection, and if the residual magnetism attenuation of the permanent magnet generator is greater than a second proportional threshold, the permanent magnet generator may be cut and disassembled.

[0012] Optionally, the method further includes: identifying surface features and constructing a three-dimensional contour for the substandard component, and fusing the original design model of the component to match the geometric shape of the component; planning a cutting path for the component based on the geometric shape of the component, and ensuring that the cutting path avoids the risk areas of the component; analyzing the material molecular spectral features of the substandard component, and determining the material of the component by combining the visual image of the component; determining the cutting parameters corresponding to the component based on the material of the component; and cutting and decomposing the component according to the planned cutting path and the determined cutting parameters.

[0013] Optionally, the method further includes: extracting morphological, textural, and color features of the decomposed material, and identifying the preliminary material type of the material based on a material feature model; acquiring the continuous spectral response of the material in the visible to near-infrared band, and identifying the chemical composition and molecular structure information of the material based on spectral preprocessing and feature extraction; fusing the preliminary material type of the material and the chemical composition and molecular structure information of the material, and determining the final material type of the material through a confidence weighting mechanism; and pushing the material to the corresponding recycling area based on the final material type of the material.

[0014] Optionally, the sorting and recycling of the decomposed materials includes: recycling the waste oil generated during the processing of the hydraulic system and gearbox in the wind power equipment after multi-stage filtration and vacuum distillation; recycling glass fiber or carbon fiber from the broken blades of the sorted wind power equipment using a pyrolysis process; smelting the sorted steel in an electric arc furnace to produce recycled steel ingots; recycling various metals from the circuit boards of the electrical components in the sorted wind power equipment using physical crushing and hydrometallurgical processes; separating the copper core and insulation layer from the cables of the electrical components in the sorted wind power equipment using mechanical stripping and crushing processes; extracting neodymium iron boron rare earth from the sorted permanent magnets using hydrogen crushing and air jet milling processes; and recycling the sorted plastics into acrylonitrile butadiene styrene copolymer (ABS) granules or polypropylene (PP) granules after sorting, cleaning, and melt granulation.

[0015] This disclosure provides a multi-component resource recycling device for decommissioned wind turbines, comprising: a transportation module, a positioning module, an intelligent cutting module, a sorting module, and a numerical control system module; wherein, the numerical control system module is used to obtain the remaining component life of each component in the wind turbine based on the design life, real-time damage amount, and failure damage amount of each component in the wind turbine, and to obtain the remaining turbine life of the wind turbine based on the remaining component life of each component in the wind turbine, and to decommission the wind turbine when the remaining turbine life of the wind turbine is lower than a preset value; the transportation module is used to transport substandard dismantled components, and the positioning module, the intelligent cutting module, and the sorting module are arranged sequentially at intervals along the transportation direction of the transportation module, the positioning module being used for attitude adjustment of the components; the numerical control system module is used to plan the cutting route and determine the cutting parameters of the components using the intelligent cutting module, and to cut and decompose the components according to the planned cutting route and determined cutting parameters, and to sort and recycle the decomposed materials using the sorting module.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] The decommissioned wind turbines undergo individual component processing and dismantling, followed by sequential quality inspection, cutting, sorting, and recycling of the dismantled components. This process achieves high-quality recovery of multiple components from decommissioned wind turbines. Furthermore, based on the design life, real-time damage, and failure damage of each component, the remaining lifespan of the wind turbine's components and the remaining lifespan of the entire turbine unit are determined. When the remaining lifespan of the turbine unit falls below a preset value, the wind turbine is deemed ready for decommissioning. This forms a scientific decommissioning assessment system that accurately determines the timing of wind turbine recycling, avoiding premature dismantling and exceeding the service life.

[0018] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a schematic flowchart of a method for recycling multi-component resources from decommissioned wind power equipment according to an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of the structure of a multi-component resource recovery device for decommissioned wind power equipment according to an embodiment of this disclosure;

[0022] Figure 3 This is a schematic diagram of blade removal in a multi-component resource recovery method for decommissioned wind power equipment according to an embodiment of this disclosure;

[0023] Figure 4 This is a schematic diagram of the tower section dismantling in a multi-component resource recovery method for decommissioned wind power equipment according to an embodiment of this disclosure;

[0024] Figure 5 This is a schematic diagram of the wind power equipment dismantling process in a multi-component resource recovery method for decommissioned wind power equipment according to an embodiment of this disclosure;

[0025] As shown in the figure: 1. Transportation module, 11. Transportation frame, 12. Guide rail conveyor rollers, 13. Conveyor motor, 14. Limiting baffle, 15. Supporting legs;

[0026] 2. Positioning module; 21. Positioning gantry; 22. Positioning fixture;

[0027] 3. Intelligent cutting module; 31. Cutting gantry; 32. Multimodal recognition module; 33. Cutting module;

[0028] 4. Sorting module; 41. Product transfer cart; 42. Belt-type swing wheel; 43. Block pusher;

[0029] 5. CNC system module;

[0030] 100. Wind power equipment; 101. Blades; 102. Tower sections; 103. Flanges; 104. Nacelle cover; 105. Nacelle internal components; 106. Fairing; 107. Hub; 108. Tower; 109. Electrical components.

[0031] 200. Crane. Detailed Implementation

[0032] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0033] like Figure 1 As shown in the embodiments of this disclosure, a method for multi-component resource recovery from decommissioned wind power equipment is proposed, including:

[0034] S1: Obtain the remaining lifespan of each component in the wind turbine based on the design lifespan, real-time damage, and failure damage of each component.

[0035] S2: Obtain the remaining lifespan of the wind turbine unit based on the remaining lifespan of each component in the wind turbine, and decommission the wind turbine unit when the remaining lifespan of the wind turbine unit is lower than the preset value.

[0036] S3: Process and dismantle the various components of the decommissioned wind power equipment;

[0037] S4: Conduct quality inspection on the dismantled components, and when the quality of the components does not meet the standards, plan the cutting route and determine the cutting parameters for the components, and cut and decompose the components according to the planned cutting route and determined cutting parameters;

[0038] S5: Sorting and recycling the decomposed materials.

[0039] Understandably, the process of handling and dismantling individual components of retired wind turbines, followed by sequential quality inspection, cutting, sorting, and recycling of these components, achieves high-quality recovery of multiple resource components from retired wind turbines. Furthermore, by calculating the remaining lifespan of each component based on its design life, real-time damage, and failure damage, and by calculating the remaining lifespan of the entire wind turbine unit, a scientific retirement assessment system is established. This system accurately determines the timing of wind turbine recycling, avoiding premature dismantling and exceeding the permitted service life.

[0040] It should be noted that wind power equipment is a complete set of equipment that converts wind energy into electrical energy. The components of wind power equipment include gearboxes, generators, towers, blades, converters, yaw systems, and electrical components such as connectors and cables.

[0041] The real-time damage of a component can be obtained using equipment such as crack depth detectors and corrosion rate meters, indicating the current damage state of the component. The failure damage of a component can be determined based on industry experience or relevant standards, indicating the damage state when the component reaches failure.

[0042] The preset values ​​are used for comparing the remaining lifespan of wind turbine units. The preset values ​​can be set according to actual needs without any restrictions. For example, the preset values ​​can be set with economic constraints.

[0043] Decommissioned wind turbines undergo quality testing. If the quality fails to meet standards, the components are further cut, disassembled, sorted, and recycled to ultimately achieve material-level reuse. If the quality meets standards, the components can be refurbished. Specifically, qualified components are sent to downstream manufacturers for further testing and refurbishment, achieving resource recovery of finished components.

[0044] In some embodiments, the method further includes:

[0045] The economic life threshold of wind power equipment is obtained by considering the cumulative cost of wind power equipment, the cumulative revenue of wind power equipment, and the net profit from disposal of wind power equipment.

[0046] The economic life threshold of wind power equipment is used as a preset value and compared with the remaining life of wind power units.

[0047] When the remaining lifespan of a wind turbine unit is less than the economic lifespan threshold of the wind turbine, the wind turbine shall be decommissioned.

[0048] The economic life threshold of wind power equipment is determined by the following formula:

[0049]

[0050] Among them, L 经济寿命阈值 Let V be the economic life threshold of the wind turbine, C(t) be the marginal cost function for the wind turbine to continue operating, R(t) be the marginal revenue function for the wind turbine to continue operating, and V be the marginal cost function for the wind turbine to continue operating. 净 Net profit from the disposal of resources after the decommissioning of wind power equipment.

[0051] Understandably, based on The formula uses the balance point between the cumulative cost of wind power equipment and the cumulative revenue and net profit from disposal to determine the economic life threshold of wind power equipment. Furthermore, it uses the comparison between the economic life threshold of wind power equipment and the remaining life of the wind power unit to determine whether the wind power equipment should be decommissioned. This realizes the economic constraint (flexible boundary condition) of wind power equipment decommissioning assessment, which can accurately determine the timing of wind power equipment recycling and avoid the problems of premature dismantling and overdue service.

[0052] It should be noted that C(t) is the marginal cost function for the continued operation of wind power equipment, which is obtained by fitting historical operation and maintenance data and usually increases over time.

[0053] R(t) is the marginal revenue function for the continued operation of wind power equipment. It is obtained by fitting historical operation and maintenance data, power generation, electricity price and other data, and usually decreases over time.

[0054] V 净 The net profit from the disposal of wind power equipment after its decommissioning is calculated based on market data at the time, using V as the basis for the calculation. 净 = Revenue from recycled materials + Revenue from reuse of components - Dismantling costs - Transportation costs - Environmental compliance costs.

[0055] In some embodiments, the method further includes:

[0056] Identify the key components in the wind power equipment;

[0057] When the real-time damage to critical components of a wind turbine is not less than the failure damage, and the critical components cannot be repaired, the wind turbine shall be decommissioned.

[0058] It is understandable that when the real-time damage to critical components in wind power equipment is not less than the failure damage, and the critical components cannot be repaired, the wind power equipment is decommissioned. This achieves the safety constraints (hard boundary conditions) of wind power equipment decommissioning assessment and avoids safety problems caused by damage to critical components.

[0059] It should be noted that key components of wind power equipment can include gearboxes, generators, towers, blades, etc., and there are no restrictions on this.

[0060] In some embodiments, the method further includes:

[0061] Determine the design life and mandatory retirement age of wind power equipment;

[0062] Wind power equipment shall be decommissioned when its lifespan is not less than its design lifespan and / or its lifespan is not less than its mandatory retirement age.

[0063] It is understandable that wind turbines are decommissioned when their lifespan is not less than their design lifespan and / or their lifespan is not less than their mandatory retirement age. This achieves compliance constraints (hard boundary conditions) for wind turbine retirement assessment and avoids the problem of exceeding the service life.

[0064] It should be noted that the mandatory retirement age of wind power equipment can be determined according to local regulations or other provisions and standards. Generally, without a life extension permit, the mandatory retirement age is 20 to 25 years.

[0065] In some embodiments, the method further includes:

[0066] When the remaining lifespan of a wind turbine unit is less than or equal to zero, the wind turbine shall be decommissioned.

[0067] It is understandable that when the remaining lifespan of a wind turbine is less than or equal to zero, the wind turbine is decommissioned, thereby achieving compliance constraints (hard boundary conditions) for wind turbine decommissioning assessment and avoiding the problem of exceeding the service life.

[0068] In some embodiments, the remaining component life of each part in the wind power equipment is:

[0069]

[0070] Among them, L 组件剩余寿命,i Δ represents the remaining component life. damage Δ represents the real-time damage level of the component. invalid L represents the amount of damage caused by component failure. 组件设计寿命,i The design life of the component.

[0071] Understandably, based on The formula enables the determination of the remaining lifespan of each component in a wind turbine based on its design lifespan, real-time damage, and failure damage. This allows for the accurate determination of the remaining lifespan of the entire wind turbine unit based on the remaining lifespan of each component.

[0072] It should be noted that the real-time damage to critical components in wind power equipment is not less than the failure damage, which can be expressed as:

[0073]

[0074] Here, different values ​​of i represent different components in the wind power equipment.

[0075] In some embodiments, the method further includes:

[0076] The life correction coefficients for each component of the wind turbine are determined based on the environmental parameters of the wind turbine.

[0077] The remaining lifespan of the components is adjusted based on the lifespan correction coefficients of each component in the wind power equipment.

[0078] Determine the weighting coefficients of each component in the wind power equipment;

[0079] The remaining life of the wind turbine unit is obtained by adjusting the remaining life of each component and the weighting coefficient of each component.

[0080] The remaining lifespan of the wind turbine units is as follows:

[0081] L 机组剩余寿命 =∑(w i ×γ env，i ×L 组件剩余寿命,i );

[0082] L 机组剩余寿命 For the remaining lifespan of wind turbine units, w i γ is the weighting coefficient of the component. env，i This is the lifespan correction factor for the component.

[0083] Understandably, based on L 机组剩余寿命 =∑(w i ×γ env，i ×L 组件剩余寿命,i The formula allows for the determination of the remaining lifespan of the wind turbine unit based on the modified remaining lifespan of each component and the weight coefficient of each component. This forms a scientific decommissioning assessment system that can accurately determine the timing of wind turbine recycling and avoid premature dismantling and overdue service.

[0084] It should be noted that environmental parameters of wind power equipment during operation can be monitored using an environmental sensor array to determine the environmental correction factor γ. env，i The value of .

[0085] For example, the parameters for detecting salt spray concentration on offshore wind turbines and dust intensity on onshore wind turbines are given. The standard environment value is 1, and the correction factor γ increases with the severity of the service environment. env，i The value is between 0.5 and 1.

[0086] Specifically, the correction factor γ env，iWhen the value is in the range of 1.00-0.95, the corresponding salt spray impact is: basically unaffected by salt spray pollution, with typical scenarios being: wind power equipment in inland low-humidity areas and fully enclosed nacelles; the corresponding dust impact is: basically unaffected by wind erosion, with typical scenarios being: wind power equipment in plains and hilly areas with good vegetation cover.

[0087] Correction coefficient γ env，i When the value is in the range of 0.95-0.80, the corresponding salt spray impact is: alternating salt spray pollution, with typical scenarios being: wind power equipment in coastal or near-shore areas of 1km-5km (periodic sea breeze); the corresponding dust impact is: mild wind erosion, with typical scenarios being: wind power equipment near the edge of semi-arid grasslands and dusty Gobi deserts.

[0088] Correction coefficient γ env，i When the value is in the range of 0.80-0.70, the corresponding salt spray impact is: frequently exposed to salt spray environment, but with sealed protection. Typical scenarios include: internal components of offshore wind power equipment (gearboxes, generators, etc.); the corresponding sandstorm impact is: severe wind erosion impact, but with protective protection. Typical scenarios include: internal components of wind power equipment in areas with strong winds and sandstorms.

[0089] Correction coefficient γ env，i When the value is in the range of 0.70-0.50, the corresponding salt spray impact is: frequent exposure to salt spray environment, typical scenario: external components of offshore wind power equipment directly exposed to the environment (blades, towers, etc.); the corresponding sandstorm impact is: severe wind erosion, typical scenario: leading edge of blades, external towers, etc. in areas with strong winds and sandstorms.

[0090] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the processing and dismantling of various components of the decommissioned wind power equipment 100 includes:

[0091] The hydraulic system and gearbox in the decommissioned wind turbine 100 are subjected to closed-loop oil pumping to drain the waste oil, and the electrical system and communication lines in the decommissioned wind turbine 100 are disconnected.

[0092] The decommissioned wind power equipment 100 is dismantled in the following order from the outside to the inside and from top to bottom: blade 101, hub 107, nacelle cover 104, main shaft, gearbox, hydraulic device, generator, converter and yaw system. When dismantling blade 101, the blade to be dismantled is locked in the feathering position, and two sets of bolts are simultaneously removed along the diagonal direction of the blade root flange of blade 101.

[0093] The internal components of the tower and the tower section 102 of the decommissioned wind power equipment 100 are dismantled in stages. When dismantling the tower section 102, a vertical lifting force is applied to the tower section 102, and two sets of bolts are simultaneously dismantled along the diagonal direction of the flange 103 of the tower section 102.

[0094] Specifically, the treatment method is as follows: the hydraulic system, gearbox, etc. are circulated and pumped out through a waste oil recovery device to ensure complete drainage and sealed storage, while the electrical system and communication lines are disconnected.

[0095] Demolition method: such as Figure 5 As shown, the blades 101, fairing 106, hub 107, nacelle cover 104, and internal nacelle devices 105 (main shaft, gearbox, hydraulic system, generator, converter, yaw system) of the decommissioned wind turbine 100 are removed in sequence from the outside to the inside and from top to bottom. Then, the internal tower components (electrical components 109, tower 108) and tower section 102 are removed in sections.

[0096] Among them, such as Figure 3 As shown, during the removal of blade 101, the blade 101 to be removed is locked in the feathering position (90°) and mechanically tightened. Simultaneously, two sets of bolts are removed manually or by a robotic arm along the diagonal direction of the blade root flange, with a descent speed ≤0.5m / s. Figure 4 As shown, during the dismantling of tower section 102, the crane 200 applies a vertical lifting force to tower section 102 (error ≤ 5% of section weight), and the two sets of bolts are simultaneously dismantled by manual or mechanical arm at flange positions a1-a2 and b1-b2 (diagonal), with a descent speed ≤ 0.5m / s.

[0097] For the quality inspection of each dismantled component, visible defects such as cracks and wear on the surface of the component can be quickly scanned by handheld intelligent vision inspection terminals. In combination with portable vibration spectrum analyzers, ultrasonic flaw detectors, and portable X-ray inspection devices, hidden damage such as gearbox gear meshing status, internal cracks in hydraulic pipelines, and insulation defects in generator windings can be detected on site.

[0098] Components that meet the reuse requirements are sent to downstream manufacturers for further testing and refurbishment, thus realizing the recycling of resources from finished parts.

[0099] In some embodiments, the method further includes: performing quality inspection on the dismantled gearbox, and cutting and disassembling the gearbox when the gear wear of the gearbox is greater than a wear threshold, and / or when the bearing clearance of the gearbox is greater than a first clearance threshold.

[0100] It is understandable that when the wear of the gears in the gearbox exceeds the wear threshold, and / or the bearing clearance of the gearbox exceeds the first clearance threshold, it indicates that the gearbox does not meet the requirements for reuse. Therefore, the gearbox is cut and disassembled to ensure the accurate recycling of the gearbox.

[0101] It should be noted that the wear threshold can be 0.2mm, and the first clearance threshold can be 0.1mm. Specifically, when the wear of the gears in the gearbox is greater than 0.2mm, the gearbox is cut and disassembled for material recycling. When the bearing clearance of the gearbox is greater than 0.1mm, the gearbox is cut and disassembled for material recycling. Otherwise, when the wear of the gears in the gearbox is less than or equal to 0.2mm, and the bearing clearance of the gearbox is less than or equal to 0.1mm, the gearbox is recycled as a finished product.

[0102] In some embodiments, the method further includes: performing quality inspection on the dismantled generator, and cutting and disassembling the generator when the insulation resistance of the generator is less than a first resistance threshold, and / or the eccentricity of the generator is greater than the eccentricity threshold.

[0103] It is understandable that when the insulation resistance of the generator is less than the first resistance threshold, and / or the eccentricity of the generator is greater than the eccentricity threshold, it means that the generator does not meet the requirements for reuse. Therefore, the generator is cut and disassembled to ensure the accurate recycling of the generator.

[0104] It should be noted that the first resistance threshold can be 10MΩ, and the eccentricity threshold can be 0.05mm. Specifically, when the insulation resistance of the generator is less than 10MΩ, the generator is cut and disassembled for material recycling. When the eccentricity of the generator is greater than 0.05mm, the generator is cut and disassembled for material recycling. Otherwise, when the insulation resistance of the generator is greater than or equal to 10MΩ, and the eccentricity of the generator is less than or equal to 0.05mm, the generator is recycled as a finished product.

[0105] In some embodiments, the method further includes: performing quality inspection on the dismantled converter, and cutting and disassembling the converter when the withstand voltage value of the converter decreases by a proportion greater than a first proportion threshold.

[0106] Understandably, when the withstand voltage of the converter drops by a percentage greater than the first percentage threshold, it indicates that the converter does not meet the requirements for reuse. Therefore, the converter is cut and disassembled to ensure accurate recycling of the converter.

[0107] It should be noted that the first percentage threshold can be 10%. Specifically, when the withstand voltage of the converter decreases by more than 10%, the converter is cut and disassembled for material recycling. Otherwise, when the withstand voltage of the converter is less than or equal to 10%, the converter is recycled as a finished product.

[0108] In some embodiments, the method further includes: performing quality inspection on the dismantled yaw system, and cutting and disassembling the yaw system when the bearing clearance of the yaw system is greater than a second clearance threshold, and / or the braking torque of the yaw system is less than a torque threshold.

[0109] It is understandable that when the bearing clearance of the yaw system is greater than the second clearance threshold, and / or the braking torque of the yaw system is less than the torque threshold, it indicates that the yaw system does not meet the reuse requirements. Therefore, the yaw system is cut and decomposed to ensure the accurate recovery of the yaw system.

[0110] It should be noted that the second clearance threshold can be 0.2 mm, and the torque threshold can be 80 kN·m. Specifically, when the bearing clearance of the yaw system is greater than 0.2 mm, the yaw system is cut and disassembled for material recycling. When the braking torque of the yaw system is less than 80 kN·m, the yaw system is cut and disassembled for material recycling. Otherwise, when the bearing clearance of the yaw system is less than or equal to 0.2 mm, and the braking torque of the yaw system is greater than or equal to 80 kN·m, the yaw system is recycled as a finished product.

[0111] In some embodiments, the method further includes: performing quality inspection on the dismantled electrical components, and cutting and disassembling the electrical components when the contact resistance of the electrical components is greater than a second resistance threshold, and / or the insulation layer thickness of the electrical components is less than a thickness threshold.

[0112] It is understandable that when the contact resistance of an electrical component is greater than the second resistance threshold, and / or the insulation layer thickness of the electrical component is less than the thickness threshold, it indicates that the electrical component does not meet the requirements for reuse. Therefore, the electrical component is cut and disassembled to ensure the accurate recycling of the electrical component.

[0113] It should be noted that the second resistance threshold can be 50mΩ, and the thickness threshold can be set arbitrarily. It is used to indicate whether the insulation layer of the electrical component is intact. Specifically, when the contact resistance of the electrical component is greater than 50mΩ, the electrical component is cut and disassembled for material recycling. When the insulation layer thickness of the electrical component is too small, resulting in an incomplete insulation layer, the electrical component is cut and disassembled for material recycling. Otherwise, when the contact resistance of the electrical component is less than or equal to 50mΩ and the insulation layer of the electrical component is intact, the electrical component is recycled as a finished product.

[0114] In some embodiments, the method further includes: performing quality inspection on the dismantled permanent magnet generator, and cutting and disassembling the permanent magnet generator when the residual magnetism attenuation of the permanent magnet generator is greater than a second proportional threshold.

[0115] Understandably, when the residual magnetism of a permanent magnet generator decreases beyond the second proportional threshold, it indicates that the permanent magnet generator does not meet the requirements for reuse. Therefore, the permanent magnet generator is cut and disassembled to ensure its accurate recycling.

[0116] It should be noted that the second ratio threshold can be 5%. Specifically, when the residual magnetism of the permanent magnet generator decreases by more than 5%, the permanent magnet generator is cut and disassembled for material recycling. Otherwise, when the residual magnetism of the permanent magnet generator decreases by less than or equal to 5%, the permanent magnet generator is recycled as a finished product.

[0117] For large components that do not meet quality standards and can be destructively disassembled (such as blades, tower sections, towers, nacelle covers, etc.), material-level recycling is implemented. Unlike component-level resource recycling, which retains the overall function, material-level recycling focuses on breaking down components to the basic material level to achieve the purpose of subsequent volume reduction transportation and material sorting.

[0118] In some embodiments, the method further includes:

[0119] For components that do not meet quality standards, surface feature identification and 3D contour construction are performed, and the original design model of the component is integrated to match the geometric shape of the component.

[0120] Plan the cutting path of the component based on its geometry, and make the cutting path avoid the risk area of ​​the component;

[0121] The components are cut and disassembled according to the planned cutting route.

[0122] Understandably, by identifying surface features and constructing 3D contours for substandard components and integrating them with the original design model of the components, the geometry of the components can be matched, and the cutting route of the components can be planned based on the geometry of the components. The cutting route avoids the risk areas of the components, thereby ensuring high cutting quality and efficiency of wind power equipment components, and thus achieving more accurate sorting and recycling.

[0123] It should be noted that for substandard parts, a multimodal recognition module can be used to perform a 360° all-around scan of the parts. The visual recognition sensor and the structured light 3D scanning sensor work together. Specifically, the visual sensor captures images to identify surface features (rust, labels, weld morphology, etc.), the structured light projects laser point clouds to construct a three-dimensional contour, and after merging with the original design model of the part (CAD model, etc.), it accurately matches the actual geometric shape, plans the preset cutting route and generates a 3D cutting path, while automatically avoiding high-risk areas such as residual oil pipes and cables.

[0124] In some embodiments, the method further includes:

[0125] For components that do not meet quality standards, analyze the molecular spectral characteristics of the materials and combine this with visual images of the components to determine the material of the components;

[0126] The cutting parameters corresponding to the component are determined based on the material of the component;

[0127] The component is cut and disassembled according to the determined cutting parameters.

[0128] Understandably, by analyzing the molecular spectral characteristics of substandard components and combining this with visual images of the components, the material of the components can be determined, and the corresponding cutting parameters can be determined based on the material. This ensures high cutting quality and efficiency for wind power equipment components, thereby enabling more precise sorting and recycling.

[0129] It should be noted that the molecular spectral characteristics of materials (such as the characteristic absorption peak of glass fiber resin at 1200nm) can be analyzed by a hyperspectral analysis sensor (900nm-1700nm band). Combined with visual recognition, the material classification results can be double-verified, thereby improving the accuracy of material identification.

[0130] Different cutting parameters are used for different components. For example, for composite materials such as fiberglass blades, high-pressure water jet cutting (pressure 350MPa, garnet abrasive flow rate 2.5kg / min) is used; thick steel plates (>30mm) in the tower section are cut with flame (oxygen pressure 0.7MPa, propane pressure 0.2MPa); and regular steel sections of the tower are cut with mechanical shearing (tool speed 2000r / min, feed rate 100mm / min).

[0131] During the process of cutting and decomposing the component according to the planned cutting route and determined cutting parameters, dynamic and precise cutting can be performed. For example, during the cutting process, the vision system uses a laser tracker to locate in real time, dynamically adjusts the nozzle / tool ​​incident angle (±15° deflection range to adapt to the curved surface profile), and automatically reduces the speed by 50% in the weld area to protect the tool.

[0132] For complex structures such as concealed adhesive interfaces or irregular welds, the system marks the coordinates and then hands them over to manual assistance for disassembly, allowing operators or robotic arms to complete the delicate work.

[0133] In some embodiments, the method further includes:

[0134] The morphological, textural, and color features of the decomposed material are extracted, and the preliminary material type is identified based on the material feature model.

[0135] The continuous spectral response of the material in the visible to near-infrared band is obtained, and the chemical composition and molecular structure information of the material are identified based on spectral preprocessing and feature extraction.

[0136] The material type is determined by integrating the preliminary material type, chemical composition, and molecular structure information of the material, and by using a confidence weighting mechanism.

[0137] Based on the final material type, the material is pushed to the corresponding recycling area.

[0138] Understandably, the morphological, textural, and color features of the decomposed materials are extracted, and the preliminary material type is identified based on the material feature model. The continuous spectral response of the materials in the visible to near-infrared bands is obtained, and the chemical composition and molecular structure information of the materials are identified based on spectral preprocessing and feature extraction. Thus, the preliminary material type and the chemical composition and molecular structure information of the materials are integrated, and the final material type of the materials is determined through a confidence weighting mechanism, thereby achieving accurate sorting and recycling of the decomposed materials.

[0139] It should be noted that, for determining the final material type, a multimodal material identification system can be constructed by integrating visual recognition sensors and hyperspectral analysis sensors into the sorting module.

[0140] Specifically, in visual recognition sensors, preprocessing operations are performed through image processing technology to extract the morphological features, texture features, and color features of the target, and machine learning algorithms are used to train a classification model to identify the preliminary material type.

[0141] In hyperspectral analysis sensors, the continuous spectral response of materials in the visible to near-infrared bands is acquired, and the chemical composition and molecular structure information of the materials are identified after spectral preprocessing and feature extraction.

[0142] In the collaborative decision-making unit, the physical property classification results of visual recognition and the chemical property recognition results of hyperspectral analysis are integrated. The final material type determination is output through a confidence weighting mechanism, and the sorting execution mechanism is driven to push the material to the corresponding transfer unit.

[0143] In some embodiments, sorting and recycling the decomposed materials includes:

[0144] Waste oil generated during the processing of hydraulic systems and gearboxes in wind power equipment is recycled after undergoing multi-stage filtration and vacuum distillation.

[0145] The broken material from the wind turbine blades that has been sorted out is recycled into glass fiber or carbon fiber using a pyrolysis process.

[0146] The sorted steel is smelted in an electric arc furnace to produce recycled steel ingots;

[0147] The circuit boards of electrical components in the sorted wind power equipment are recycled using physical crushing and hydrometallurgical processes to recover various metals.

[0148] The cables of electrical components in the sorted wind power equipment are separated from the copper core and insulation layer using mechanical stripping and crushing processes.

[0149] The sorted permanent magnets were subjected to hydrogen crushing and air jet milling processes to extract neodymium iron boron rare earth elements.

[0150] The sorted plastics are then classified, cleaned, and regenerated into ABS (acrylonitrile-butadiene-styrene copolymer) granules or PP (polypropylene) granules through melt granulation.

[0151] Specifically, the waste oil generated during the pretreatment process is treated with three-stage filtration (coarse filtration-fine filtration-molecular sieve) and vacuum distillation to recover base oil; the wind turbine blades in the sorting process are crushed and then recycled using a pyrolysis process to recover glass fiber or carbon fiber; steel can be smelted in an electric arc furnace to produce recycled steel ingots; electrical components are professionally disassembled and recycled according to different materials, with circuit boards using physical crushing + hydrometallurgical processes to recover copper, tin, gold and other metals, and cables using mechanical stripping + crushing processes to separate the copper core and insulation layer; the permanent magnets in generators with no refurbishment value are recovered, and neodymium iron boron rare earth is extracted using a hydrogen crushing-air jet mill process; plastics are sorted and cleaned, and then recycled into ABS or PP granules through melt granulation.

[0152] Based on this, such as Figure 2 As shown, this embodiment also proposes a multi-component resource recycling device for decommissioned wind turbines, comprising a transportation module, a positioning module, an intelligent cutting module, a sorting module, and a CNC system module. The CNC system module is used to obtain the remaining component lifespan of each component in the wind turbine based on its design lifespan, real-time damage, and failure damage, and to obtain the remaining turbine lifespan based on the remaining component lifespan. When the remaining turbine lifespan is lower than a preset value, the wind turbine is decommissioned. The transportation module is used to transport substandard dismantled components, and the positioning module, intelligent cutting module, and sorting module are arranged sequentially and at intervals along the transportation module's conveying direction. The positioning module is used for component attitude adjustment. The CNC system module uses the intelligent cutting module to plan the cutting route and determine the cutting parameters for the components, and to cut and decompose the components according to the planned cutting route and determined cutting parameters. The sorting module then sorts and recycles the decomposed materials.

[0153] The transportation module, positioning module, intelligent cutting module, sorting module, and CNC system module work together to achieve the recycling and disposal of retired wind turbine components (such as blades, tower sections, tower frames, nacelle covers, etc.).

[0154] like Figure 2As shown, in some embodiments, the transport module 1 includes: a transport frame 11, guide rail conveying rollers 12, a conveying motor 13, a limiting baffle 14, and a support frame 15. The guide rail conveying rollers 12 are arranged along the length of the transport frame 11, and the conveying motor 13 is connected to the guide rail conveying rollers 12 in a drive connection. The conveying motor 13 is used to drive the guide rail conveying rollers 12 to rotate, so as to realize the transport of various components in the decommissioned wind power equipment. The guide rail conveying rollers 12 are steel cylindrical rollers, arranged horizontally, and supported by on-site segmented lengthening through modular couplings.

[0155] In addition, the limiting baffle 14 is set at the front end of the transport frame 11, and the limiting baffle 14 is made of metal plate elastic baffle, which is fixed to the side wall of the guide rail by bolts. It uses material deformation to provide 5kN-10kN of lateral pressure, and the displacement is suppressed by the compression deformation, thereby effectively limiting the lateral displacement of the component.

[0156] The support bracket 15 is an adjustable bolt support with anti-slip pads at the bottom, and is placed at the bottom of the transport frame 11 to adapt to uneven ground.

[0157] like Figure 2 As shown, in some embodiments, the positioning module 2 includes a positioning gantry 21 and a positioning fixture 22. The positioning gantry 21 is arranged on the conveying path of the transport module 1, and the positioning fixture 22 is detachably arranged on the crossbeam slide of the positioning gantry 21 through a quick-change interface, etc., and can move laterally and vertically through the positioning gantry 21.

[0158] Specifically, the positioning fixture 22 includes slings, clamps, plate clamps, flip clamps, C-clamps, etc., and is used to fix retired wind turbine equipment in multiple directions.

[0159] When the components of the decommissioned wind turbine are moved to the positioning gantry 21, the limit switch triggers the clamping completion signal of the positioning fixture 22. According to the subsequent cutting route, the positioning gantry 21 drives the positioning fixture 22, and the positioning fixture 22 controls the movement, flipping, lifting and other posture adjustments of the components.

[0160] like Figure 2 As shown, in some embodiments, the intelligent cutting module 3 includes: a cutting gantry 31 with a double-column gantry structure, a multimodal recognition module 32, and a cutting module 33. The cutting gantry 31 is arranged on the conveying path of the transport module 1 and is located behind the positioning gantry 21. The multimodal recognition module 32 and the cutting module 33 are respectively set on the crossbeam slide of the cutting gantry 31 and can move laterally and vertically through the cutting gantry 31.

[0161] The multimodal recognition module 32 includes a visual sensor, a structured light 3D scanning sensor, and a hyperspectral analysis sensor. The visual sensor and the structured light 3D scanning sensor are used to scan 360° and match the original design model, and the hyperspectral analysis sensor (900nm-1700nm band) is used to extract the molecular spectral features of the material.

[0162] The cutting module 33 includes: a high-pressure water jet cutting head, a flame cutting head, and a mechanical shearing head.

[0163] Specifically, the multimodal recognition module 32 first performs three-dimensional scanning and material recognition on the component, and generates the optimal cutting path. Then, the cutting module 33 automatically selects the cutting method according to the material characteristics, and the cutting gantry 31 drives the precise cutting operation.

[0164] like Figure 2 As shown, in some embodiments, the sorting module 4 includes: a product transfer cart 41, a belt-type swing wheel 42, and a pusher 43. The belt-type swing wheel 42 and the pusher 43 are respectively arranged at the rear end of the transport frame 11. The belt-type swing wheel 42 is driven by a servo motor and is configured to rotate 90° and move synchronously with the pusher 43. The pusher 43 integrates a visual recognition sensor and a hyperspectral analysis sensor on its top. The product transfer cart 41 has a built-in weighing sensor for sorting by material type.

[0165] During operation, the visual recognition sensor and the hyperspectral analysis sensor identify the material, the belt wheel 42 rotates to the target lane, and the pusher 43 pneumatically pushes the material (stroke 800mm, speed 0.5m / s) to the product transfer vehicle 41. At the same time, the weighing data on the product transfer vehicle 41 is fed back to the system.

[0166] The CNC system module 5 integrates the following functions by an industrial computer: decommissioning assessment function, which connects to the environmental sensor group (salt spray / dust sensor) and calculates the remaining lifespan and determines multiple constraints according to the recycling method of this embodiment; cutting path planning function, which is configured to generate a 3D cutting path by fusing visual, structured light and hyperspectral data and call cutting parameters; and sorting decision function, which is configured to analyze visual physical features and hyperspectral chemical features.

[0167] Meanwhile, the CNC system module 5 coordinates the work of each module in real time through industrial Ethernet: the transportation module 1 transports components, the positioning module 2 clamps and positions, the identification and cutting module 3 scans and cuts, the sorting module 4 sorts and transfers, etc., with closed-loop data control throughout the entire process.

[0168] In some embodiments, the decommissioning and recycling device further includes: an auxiliary equipment module, which includes a crane, mechanical dismantling tools, electrical dismantling tools, cutting auxiliary tools, a waste oil recovery unit (closed-loop oil extraction device and sealed storage container), portable high-value testing equipment (including handheld vision terminal, vibration spectrum analyzer, ultrasonic flaw detector and X-ray detection device) and other manual operation auxiliary equipment.

[0169] The key point of the recycling method based on this embodiment is:

[0170] Multi-dimensional intelligent decommissioning determination system: Breaking through the traditional single decommissioning determination model, it constructs a multi-dimensional dynamic evaluation model based on service environment, health status of key components, sudden failures, economic upgrades, and policies and regulations. At the same time, it combines sensor data acquisition and machine learning algorithms to achieve accurate prediction and intelligent determination of the timing of wind power equipment decommissioning, providing a scientific and comprehensive basis for initiating the resource recycling process.

[0171] The whole-process intelligent resource recycling method introduces intelligent technology into the entire process from pretreatment to material recycling. The quality inspection of high-value components integrates intelligent identification and non-destructive testing to achieve rapid and accurate assessment. Cutting and disassembly operations rely on a vision recognition intelligent cutting system to automatically match the optimal process parameters. Product sorting uses high-precision sensors to automatically identify material types to ensure accurate and efficient sorting, ultimately achieving full-component, intelligent recycling from components to basic materials.

[0172] It may include the following beneficial effects:

[0173] Significantly improving resource recycling efficiency and utilization: A multi-dimensional intelligent decommissioning determination system ensures that decommissioned units enter the recycling process in a timely manner, avoiding resource idleness and waste; the fully intelligent resource recycling method utilizes advanced detection, cutting, and sorting technologies to significantly shorten recycling processing time and reduce errors and resource losses caused by manual intervention. Through the reuse of high-value components and the full-component recycling of materials, resource utilization is effectively improved, dependence on primary resources is reduced, and the needs of circular economy development are met.

[0174] Reducing overall costs and potential risks: Accurate retirement determination reduces safety accidents and high maintenance costs caused by units exceeding their service life; intelligent operation throughout the entire process reduces manpower input, optimizes resource allocation, and lowers operating costs during recycling. Simultaneously, intelligent detection and processing methods ensure the safety and standardization of the recycling process, reduce potential risks caused by improper operation, and improve the company's economic efficiency and market competitiveness.

[0175] Example 1: Taking a 2MW doubly-fed asynchronous wind turbine generator in a wind farm as an example, the specific parameters are shown in the table below:

[0176]

[0177]

[0178] 1. Assessment of retirement status:

[0179] Service environment monitoring: This wind farm is located near the edge of a semi-arid grassland and a sandy desert, which is a typical scenario of mild wind erosion. Environmental sensor arrays are used to monitor the service environment parameters of the wind power equipment to determine the environmental correction factor γ. env，叶片 γ env，塔筒 The value is 0.85; γ env，齿轮箱 γ env，发电机 and γ env，其他部件 The values ​​are 0.90 respectively.

[0180] Weighted application of key components: Based on principal component analysis, weight coefficients are assigned to gearboxes, blades, towers, generators, etc., w 齿轮箱 =0.30, w 叶片 =0.25, w 塔筒 =0.20, w 发电机 =0.15, w 其他部件 =0.10.

[0181] Component remaining lifetime calculation:

[0182] Tower section: Inspection revealed multiple dents on the tower surface caused by wind and sand abrasion, with the wear reaching 88% of the maximum design allowable amount. 组件剩余寿命,塔筒 =0.12 × 25 = 3 years.

[0183] Blade: Testing revealed that the leading edge wear of the blade reached 85% of the failure damage. The blade's design life is 20 years. Similarly, L can be obtained. 组件剩余寿命,叶片 =0.15 × 20 = 3 years.

[0184] Gearbox: Abnormal gear meshing was detected using a portable vibration spectrum analyzer, with wear reaching 90% of the failure damage. The gearbox was designed for a 20-year lifespan. 组件剩余寿命,齿轮箱 =0.1 × 20 = 2 years.

[0185] Generator: Ultrasonic flaw detectors revealed minor insulation defects in the generator windings, with damage amounting to 92% of the total failure damage. The generator's design life is 25 years. 组件剩余寿命,发电机 =0.08 × 25 = 2 years.

[0186] Other components: Comprehensive judgment L 组件剩余寿命,其他 =0.1×10=1 year.

[0187] Unit remaining life calculation: L 机组剩余寿命 =∑(w i ×γ env，i ×L组件剩余寿命,i = 2.252 years.

[0188] Demobilization constraint judgment:

[0189] Safety constraints: None of the core components have reached the failure criteria and have not triggered safe retirement.

[0190] Compliance constraints: The unit has been in operation for 18 years, has not reached its design life of 25 years, and there are no local regulations mandating its decommissioning, so it has not triggered a compliance decommissioning.

[0191] Economic constraints: By fitting the operation and maintenance data of the same type of turbine in this wind farm over the past 5 years, a marginal cost function C(t) = 80 + 15t + 2t² (ten thousand yuan / year) and a marginal revenue function R(t) = 520 × (1 - 0.03)t (ten thousand yuan / year) are established. Combined with market data, the net profit from resource disposal, V_net, is estimated to be 750,000 yuan. This is achieved by solving the integral equation:

[0192]

[0193] L was obtained through Newton's iteration. 经济剩余寿命 The estimated remaining lifespan is 2.45 years. Since the actual remaining lifespan of the unit is 2.252 years ≤ 2.45 years, the conditions for economic retirement are triggered. The resource recovery process should be initiated immediately to trigger retirement from an economic perspective and initiate the resource recovery process.

[0194] 2. Pre-treatment and component removal:

[0195] Preprocessing:

[0196] Waste liquid recovery: The hydraulic system and gearbox are emptied using a closed-loop oil pumping device to recover waste oil (recovery rate ≥95%), which is then sealed and stored in an explosion-proof container.

[0197] Electrical disconnection: Disconnect from the power grid, remove electrical components such as cables and converters, mark the cable routes, and avoid signal interference.

[0198] Component removal:

[0199] External components:

[0200] Blade: The blade is locked to the feathering position (90°) by the pitch system, and the blade root is mechanically locked. Two groups of people simultaneously remove the bolts (M30 high-strength bolts, torque wrench preset torque 1200 N·m) along the diagonal of the blade root flange. The crane lowers the blade at a speed of ≤0.5 m / s. The lowering time for a single blade is about 15 minutes.

[0201] Wheel hub: Fix the wheel hub to the main shaft connecting flange, remove the connecting bolts (12 in total, disassemble symmetrically in 3 stages), and lift it vertically with a crane to detach it from the main shaft.

[0202] Cabin cover: Remove the cover fixing clips and sealant, use a pneumatic wrench to remove the surrounding bolts, and hoist the cover sections to the transport platform.

[0203] Cabin interior:

[0204] Main shaft and gearbox: Disconnect the coupling, remove the bolts from the main shaft bearing seat, support the front end of the main shaft with a crane, and separate the gearbox from the base (weight 6.8t, using a 20t lifting tool).

[0205] Generator and converter: Remove electrical wiring terminals, use hydraulic jacks to lift the generator (4.5t), and loosen the anchor bolts; the converter (1.2t) slides out of the nacelle via guide rails.

[0206] Yaw system: Loosen the yaw brake, remove the bolts connecting the yaw gear and the tower, and then hoist and recover the entire system.

[0207] Tower section dismantling:

[0208] Internal components: Electrical cable trays, cable supports, etc. are removed from top to bottom, and the tower angle steel is disassembled in sections using a pneumatic cutting gun.

[0209] Tower section: The crane applies a vertical lifting force (error ≤ 5% of section weight) to a single tower section (20m, weight 18-22t), and two groups of workers simultaneously dismantle the bolts at flange positions a1-a2 and b1-b2 (a total of 16 bolts, removed symmetrically in 4 stages), with a descent speed ≤ 0.5m / s.

[0210] 3. Quality inspection of high-value components, as shown in the table below:

[0211]

[0212]

[0213] 4. Cutting and disassembly operations:

[0214] Intelligent cutting system operation: Based on a visual recognition and positioning system, a high-definition camera scans the component material, structure, and connection parts, and automatically identifies the material to match the following process parameters.

[0215] Large-size component cutting:

[0216] Blades: High-pressure water jet cutting (pressure 350MPa, abrasive flow rate 2.5kg / min) is used to cut along the junction of the blade root and the blade body, with a cut width ≤3mm to avoid fiber breakage and damage.

[0217] Tower section: Flame cutting (oxygen pressure 0.8MPa, propane pressure 0.15MPa) is used to make a circumferential cut 500mm below the flange at a cutting speed of 0.1m / min. The reinforcing ribs are dismantled manually using a gas welding gun.

[0218] Cabin cover: The fiberglass cover is disassembled manually using an electric saw. For complex structures (such as air vents), mold separation technology is used to avoid material mixing.

[0219] Disassembly of unqualified parts: For gearboxes and generators that fail the test, use a hydraulic spreader to separate the housing, and manually remove bearings, gears and other parts. Generator permanent magnets and precious metal parts (such as generator copper wire) are collected separately.

[0220] 5. Primary sorting and recycling of products:

[0221] High-precision visual recognition sensors and spectral analysis sensors are installed to automatically identify material types and classify and recycle them according to material type (glass fiber, steel, copper, permanent magnets, plastics, etc.) and component type (blade fragments, tower sections, electrical waste). The control belt-type swing wheel (rotating 90°) and pusher work together to push the material to the transfer vehicle, which is equipped with a weighing sensor to monitor the weight in real time.

[0222] 6. Material recycling:

[0223] Waste oil treatment: three-stage filtration (coarse filtration 50μm → fine filtration 10μm → molecular sieve dehydration) + vacuum distillation (temperature 120℃, vacuum degree -0.09MPa) to recover base oil (recovery rate ≥85%).

[0224] Blade recycling: Crush into particles smaller than 50mm, and recover glass fiber (purity ≥90%) and pyrolysis oil (yield 35%) through pyrolysis process (temperature 450℃, residence time 30min).

[0225] Steel recycling: Electric arc furnace smelting (temperature 1600℃, smelting time 90min) to produce recycled steel ingots (impurity content ≤0.05%).

[0226] Electrical components: physical crushing of circuit boards (particle size ≤2mm) + hydrometallurgical process (sulfuric acid concentration 15%, temperature 60℃) to recover copper (recovery rate 95%) and gold (recovery rate 90%).

[0227] Permanent magnet: NdFeB rare earth (purity ≥99.5%) is extracted by hydrogen crushing (hydrogen pressure 0.5MPa, temperature 300℃) + air jet mill (nozzle pressure 0.8MPa).

[0228] Plastics and cables: After sorting and cleaning, ABS / PP plastics are melt-granulated (temperature 220℃, screw speed 150r / min); cables are mechanically stripped and crushed to separate the copper core (purity ≥99.9%) from the insulation layer.

[0229] 7. Equipment platform setup and collaborative operation process:

[0230] Transportation module: The guide rail conveyor rollers carry the blades (single section weight 18t), the transport motor runs at a constant speed, and the limit baffle calibrates the position in real time to avoid deviation.

[0231] Positioning module: C-type clamps fix the blades, enabling multi-directional positioning of the gantry unit.

[0232] Intelligent cutting module: The vision recognition system scans the blade structure, retrieves process parameters (350MPa) and controls the cutting nozzle path. Blade cutting takes 40 minutes per blade, and tower section cutting takes 30 minutes per section.

[0233] Sorting module: Spectral analysis identifies cut materials, belt-type swing wheel quickly sorts them, single batch sorting time ≤2min.

[0234] CNC System Module: The CNC system uses a high-performance industrial computer as its core and relies on industrial Ethernet for data interaction. Through real-time communication with environmental sensor groups and various modules, it determines the remaining lifespan of the computer group and the conditions for decommissioning. It integrates multimodal data to plan cutting paths and uses machine learning to analyze material properties to achieve precise sorting. At the same time, it uniformly schedules modules such as transportation and positioning, monitors the operating status of equipment in real time, supports remote operation, and builds a precise control and intelligent management system for the entire process of decommissioned wind power equipment recycling.

[0235] Example 2: Taking the decommissioning and recycling of a 5MW direct-drive permanent magnet wind turbine as an example.

[0236] 1. The parameters of the decommissioned wind turbines are shown in the table below:

[0237]

[0238]

[0239] 2. Assessment of retirement status:

[0240] Service environment monitoring: This wind farm is located in a coastal area of ​​3km, which is a typical scenario of alternating salt spray pollution. Environmental sensor arrays are used to monitor the service environment parameters of the wind power equipment to determine the environmental correction factor γ. env，叶片 γ env，塔筒 The value is 0.90; γ env，齿轮箱 γ env，发电机 γ env，其他部件 The value is 0.95.

[0241] Weighted application of key components: Based on principal component analysis, weight coefficients are assigned to gearboxes, blades, towers, generators, etc., w 齿轮箱 =0.30, w 叶片 =0.25, w 塔筒 =0.20, w 发电机 =0.15, w 其他部件=0.10.

[0242] Component remaining lifetime calculation:

[0243] Tower section: Crack depth testing revealed a section of the tower surface with a depth 120% of the maximum allowable design crack depth. Its design life is 25 years. 组件剩余寿命,塔筒 = -0.2 × 25 = -5 years.

[0244] Blade: The leading edge of the blade has been eroded by wind and sand, resulting in a notch. The damage amount reaches 82% of the failure damage. The blade's design life is 20 years. Similarly, L 组件剩余寿命,叶片 =0.18 × 20 = 3.6 years.

[0245] Gearbox: Abnormal gear meshing was detected using a portable vibration spectrum analyzer, with wear reaching 90% of the failure damage. The gearbox was designed for a 20-year lifespan. 组件剩余寿命,齿轮箱 =0.1 × 20 = 2 years.

[0246] Generator: Ultrasonic flaw detectors revealed a minor insulation defect in the generator windings, with damage amounting to 110% of the failure damage. The generator's design life is 25 years. 组件剩余寿命,发电机 = -0.1 × 25 = -2.5 years.

[0247] Other components: Comprehensive judgment L 组件剩余寿命,其他 =0.1×10=1 year.

[0248] Unit remaining life calculation: L 机组剩余寿命 =∑(w i ×γ env，i ×L 组件剩余寿命,i = 0.12875 years.

[0249] Safety constraints: The tower and generator have reached the failure criteria, and the generator is beyond repair, which is a mandatory retirement condition and directly triggers safe retirement.

[0250] 3. Pre-treatment and component removal:

[0251] Preprocessing:

[0252] Waste liquid recovery: Gearbox waste oil is drained through a closed-loop circulation pump (flow rate 50L / min) and recovered through three-stage filtration; converter coolant (ethylene glycol solution) is recovered using a special leak-proof device and stored in a high-pressure resistant container in a sealed container.

[0253] Electrical disconnection: Disconnect the main cable from the power grid and use a 2500V insulation resistance meter to test the generator windings (insulation resistance 0.5MΩ, below the threshold of 10MΩ).

[0254] Component removal:

[0255] Blade removal: Lock the blade to the feathering position (90°±1°), and tighten the blade root flange with mechanical clamps; two sets of manual hydraulic torque wrenches (preset torque 2000 N·m) are used to symmetrically remove the M42 bolts (12 in total, unloaded in 4 stages), with the crane lowering speed at 0.4 m / s and the removal time for a single blade being 25 minutes.

[0256] Dismantling of the cabin interior:

[0257] Permanent magnet generator: Disconnect the excitation cable, use a 4-point balancing hoist (20t load capacity) to separate the generator from the base, and cover the magnet surface with an anti-magnetic shielding film.

[0258] Inverter: The DC capacitor bank and IGBT module are disassembled and slid out of the nacelle via a rail (sliding speed 0.2m / s). The weight of 2.5t is carried by a 5t electric hoist.

[0259] Tower section dismantling:

[0260] The crane applies a vertical lifting force (error ≤ 4% of the segment weight), and the flange bolts (24 bolts in total, removed symmetrically in 6 stages) are disassembled manually in a synchronous manner. The lowering speed is 0.5m / s, and the disassembly time for a single segment is 30min.

[0261] 4. The quality inspection results for high-value components are shown in the table below:

[0262]

[0263] 5. Cutting and disassembly operations:

[0264] Reusable components should be tagged with electronic tags without being cut. Other low-value components should be handled as follows.

[0265] Blade cutting: The glass fiber blade (single 12t) is positioned 500mm from the blade root flange by visual identification and the cutting line is cut around with a rock saw blade (speed 2000r / min, feed rate 100mm / min). The verticality of the cut is ≤1°, and the blade root flange (which can be reused) is separated from the blade body.

[0266] Tower section cutting: The tower section (30t per section, corrosion rate 11%) is cut circumferentially 600mm below the flange using flame cutting (oxygen 0.9MPa, propane 0.25MPa) at a speed of 0.1m / min. The reinforcing ribs are dismantled by manual gas welding.

[0267] Cable disassembly: The rock saw blade feeds at a rate of 200 mm / min to cut the cable into 2 m sections, and the polyethylene insulation layer is stripped off by an automatic stripper.

[0268] Disassembly of the engine hood: The fiberglass engine hood (1.5t) was cut along the mold seam using an electric saw (1500r / min). Complex curved surfaces were separated using a 250MPa high-pressure water jet (abrasive flow rate 2.5kg / min).

[0269] 6. Primary sorting and recycling of products:

[0270] Sorting logic:

[0271] The system uses a visual recognition and spectral analysis module to identify electronic tags and material types. When an electronic tag for a reusable component is identified, the system operates in the forward direction. When a material with different components is identified, a belt-type swing wheel rotates 90° to guide it, and a pusher pushes the material to the corresponding transfer vehicle. The transfer vehicle is equipped with a weighing sensor (accuracy ±0.5%), which automatically replenishes the sorting and recycling position when the load exceeds the limit. An example of the sorting and recycling position is shown below.

[0272] Material Cart A: Reusable parts (marked with further refurbishable value, transported to downstream manufacturer transfer area);

[0273] Cart B: Glass fiber / resin fragments (marked as pyrolysis raw material);

[0274] Cart C: Steel (marked as metal material);

[0275] Material cart D: Electrical components and accessories (marked as electrical components).

[0276] 7. Material recycling:

[0277] Waste oil: The waste oil from the gearbox is first filtered in three stages (coarse filtration 50μm → fine filtration 10μm → water removal by molecular sieve), and then the base oil is recovered by vacuum distillation (temperature 130℃, vacuum degree -0.095MPa).

[0278] Converter coolant (ethylene glycol solution): It is stored in a sealed container through a dedicated recovery device and can be reused in the cooling system of new equipment after distillation and purification (temperature 197℃, reflux ratio 3:1).

[0279] Blade recycling: After cutting, the fragments are crushed to less than 30mm and then subjected to a pyrolysis process under inert gas protection at 480℃ (residence time 40min) to recycle the glass fiber.

[0280] Tower section steel: It is produced by melting at 1650℃ for 120 minutes in an electric arc furnace (with the addition of 1.5% ferrosilicon for deoxidation) to produce recycled steel ingots with an impurity content of ≤0.04%, which are suitable for non-load-bearing structural components.

[0281] Electrical components: Cables are mechanically stripped and crushed to separate copper cores with a purity of over 99.95%. The polyethylene insulation layer is cleaned and dried, then melted and granulated at 230℃ to produce recycled PE granules. Circuit boards are physically crushed to less than 1mm, and copper and gold are recovered using a 20% sulfuric acid, 70℃ wet metallurgical process (with the addition of 3% hydrogen peroxide).

[0282] 8. Collaborative operation process of the device platform:

[0283] Transportation module: 30t-class guide rail conveyor rollers are used to transport tower sections at a speed of 0.3m / s. The hydraulic limit baffle compensates for the offset in real time (error ≤3mm). The 22kW transport motor ensures smooth start and stop when the load is 30t.

[0284] Positioning module: The drive clamp type fixture is used to fix large cutting components such as blades or tower sections, so that they do not move during the subsequent cutting process. The positioning gantry unit (travel Y=8m, Z=5m) achieves precise positioning of ±1°, and the flipping mechanism can be adjusted to any cutting angle.

[0285] Intelligent cutting module: Rock saw blade (1.2m diameter, 2000r / min speed, 100mm / min feed) cuts the blades, and the vision recognition system optimizes the cutting path and adjusts the process parameters in real time; the tower section is cut with 0.9MPa oxygen and 0.25MPa propane flame, and the gantry unit moves along the axis at a speed of 0.1m / min. The reinforcing ribs are dismantled by manual gas welding. The cutting time for a single section is 35min.

[0286] Sorting module: Visual recognition sensor and spectral analysis sensor work together, 1.5m wide belt-type swing wheel (speed 15r / min) rotates 90° to guide, 200N pusher pushes the material to the transfer car; the transfer car weighing sensor (accuracy ±0.3%) uploads data in real time, and when the loading of the material car reaches 2t, the CNC system automatically schedules and fills the gap.

[0287] CNC System Module: The CNC system uses a high-performance industrial computer as its core and relies on industrial Ethernet for data interaction. Through real-time communication with environmental sensor groups and various modules, it determines the remaining lifespan of the computer group and the conditions for decommissioning. It integrates multimodal data to plan cutting paths and uses machine learning to analyze material properties to achieve precise sorting. At the same time, it uniformly schedules modules such as transportation and positioning, monitors the operating status of equipment in real time, supports remote operation, and builds a precise control and intelligent management system for the entire process of decommissioned wind power equipment recycling.

[0288] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0289] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0290] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0291] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A method for recovering multi-component resources from decommissioned wind power equipment, characterized in that, include: The remaining lifespan of each component in the wind power equipment is obtained based on the design lifespan, real-time damage amount, and failure damage amount of each component in the wind power equipment. The remaining lifespan of the wind turbine is obtained based on the remaining lifespan of each component in the wind turbine, and the wind turbine is decommissioned when the remaining lifespan of the wind turbine is lower than a preset value. The retired wind power equipment will undergo processing and dismantling of its various components; The dismantled components are subjected to quality inspection, and when the quality of the components does not meet the standards, the components are cut along a cutting path and the cutting parameters are determined. The components are then cut and disassembled according to the planned cutting path and the determined cutting parameters. The disassembled materials are sorted and recycled; The method further includes: obtaining an economic life threshold for the wind power equipment based on the cumulative cost of the wind power equipment, the cumulative revenue of the wind power equipment, and the net profit from disposal of the wind power equipment; comparing the economic life threshold of the wind power equipment as the preset value with the remaining life of the wind power equipment unit; and retiring the wind power equipment when the remaining life of the wind power equipment unit is less than the economic life threshold of the wind power equipment. The economic life threshold of the wind power equipment is determined by the following formula: ； The L 经济寿命阈值 Let C(t) be the economic life threshold of the wind turbine, C(t) be the marginal cost function for the continued operation of the wind turbine, R(t) be the marginal revenue function for the continued operation of the wind turbine, and V be the marginal cost function for the continued operation of the wind turbine. 净 This refers to the net profit from the disposal of resources after the wind power equipment is decommissioned.

2. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The method further includes: The key components of the wind power equipment are identified, and the wind power equipment is decommissioned when the real-time damage of the key components is not less than the failure damage and the key components cannot be repaired. And / or, The design life and mandatory retirement age of the wind power equipment are determined, and the wind power equipment is retired when the life of the wind power equipment is not less than the design life of the wind power equipment and / or the life of the wind power equipment is not less than the mandatory retirement age of the wind power equipment. And / or, When the remaining lifespan of the wind turbine unit is less than or equal to zero, the wind turbine shall be decommissioned.

3. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The method further includes: The life correction coefficients for each component of the wind power equipment are determined based on the environmental parameters of the wind power equipment. The remaining lifespan of the components is adjusted based on the lifespan correction coefficients of each component in the wind power equipment. Determine the weighting coefficients of each component in the wind power equipment; The remaining life of the wind turbine is obtained based on the corrected remaining life of each component and the weighting coefficient of each component. The remaining lifespan of the wind turbine unit is as follows: ； The L 机组剩余寿命 The remaining lifespan of the wind turbine unit, w i The weighting coefficient of the component is... This is the lifespan correction factor for the component; The remaining lifespan of each component in the wind power equipment is as follows: ； The L 机组剩余寿命，i The remaining component life of the component, The real-time damage amount of the component, the The L represents the amount of failure damage to the component. 组件设计寿命，i The design life of the component.

4. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The process of handling and dismantling the various components of the decommissioned wind power equipment includes: The hydraulic system and gearbox of the decommissioned wind power equipment are subjected to closed-loop oil pumping to drain the waste oil, and the electrical system and communication lines of the decommissioned wind power equipment are disconnected. The blades, hubs, nacelle cover, main shaft, gearbox, hydraulic system, generator, converter and yaw system of the decommissioned wind power equipment shall be removed in sequence from the outside to the inside and from top to bottom. When removing the blades, the blades to be removed shall be locked in the feathering position and two sets of bolts shall be removed simultaneously along the diagonal direction of the blade root flange. The internal components of the tower and the tower section of the decommissioned wind power equipment are dismantled in stages. When dismantling the tower section, a vertical lifting force is applied to the tower section, and two sets of bolts are simultaneously dismantled along the diagonal direction of the flange of the tower section.

5. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The method further includes: The dismantled gearbox is subjected to quality inspection, and when the wear of the gears in the gearbox is greater than the wear threshold, and / or the bearing clearance of the gearbox is greater than the first clearance threshold, the gearbox is cut and disassembled. And / or, The dismantled generator is subjected to quality inspection, and when the insulation resistance of the generator is less than a first resistance threshold, and / or the eccentricity of the generator is greater than the eccentricity threshold, the generator is cut and disassembled. And / or, The dismantled converter is subjected to quality inspection, and when the withstand voltage value of the converter drops by a percentage greater than a first percentage threshold, the converter is cut and disassembled. And / or, The dismantled yaw system is subjected to quality inspection, and when the bearing clearance of the yaw system is greater than the second clearance threshold, and / or the braking torque of the yaw system is less than the torque threshold, the yaw system is cut and disassembled. And / or, The dismantled electrical components are subjected to quality inspection, and when the contact resistance of the electrical component is greater than a second resistance threshold, and / or the insulation layer thickness of the electrical component is less than a thickness threshold, the electrical component is cut and disassembled. And / or, The dismantled permanent magnet generator is subjected to quality inspection, and when the residual magnetism attenuation of the permanent magnet generator is greater than the second proportional threshold, the permanent magnet generator is cut and disassembled.

6. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The method further includes: For components that do not meet quality standards, surface feature identification and three-dimensional contour construction are performed, and the original design model of the component is fused to match the geometric shape of the component. The cutting path of the component is planned based on its geometry, and the cutting path avoids the risk areas of the component. For components that do not meet quality standards, analyze their molecular spectral characteristics and, in conjunction with visual images of the components, determine the material of the components. The cutting parameters corresponding to the component are determined based on the material of the component; The component is cut and decomposed according to the planned cutting route and the determined cutting parameters.

7. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The method further includes: The morphological, textural, and color features of the decomposed material are extracted, and the preliminary material type of the material is identified based on the material feature model. The continuous spectral response of the material in the visible to near-infrared band is obtained, and the chemical composition and molecular structure information of the material are identified based on spectral preprocessing and feature extraction. The preliminary material type of the material is integrated with the chemical composition and molecular structure information of the material, and the final material type of the material is determined through a confidence weighting mechanism; Based on the final material type of the material, the material is pushed to the corresponding recycling area.

8. The method for multi-component resource recovery from decommissioned wind power equipment according to claim 1, characterized in that, The process of sorting and recycling the decomposed materials includes: The waste oil generated during the processing of the hydraulic system and gearbox in the wind power equipment is recovered after undergoing multi-stage filtration and vacuum distillation. The broken material from the wind turbine blades that has been sorted out is recycled into glass fiber or carbon fiber using a pyrolysis process. The sorted steel is smelted in an electric arc furnace to produce recycled steel ingots; The circuit boards of the electrical components in the sorted wind power equipment are recycled using physical crushing and hydrometallurgical processes to recover various metals. The cables of the electrical components in the sorted wind power equipment are separated from the copper core and insulation layer by mechanical stripping and crushing processes; The sorted permanent magnets were subjected to hydrogen crushing and air jet milling processes to extract neodymium iron boron rare earth elements. The sorted plastics are then classified, cleaned, and regenerated into acrylonitrile butadiene styrene copolymer (ABS) granules or polypropylene (PP) granules through melt granulation.

9. A multi-component resource recovery device for decommissioned wind power equipment, characterized in that, include: Transportation module, positioning module, intelligent cutting module, sorting module, and CNC system module; The numerical control system module is used to obtain the remaining component life of each component in the wind power equipment based on the design life, real-time damage amount and failure damage amount of each component in the wind power equipment, and to obtain the remaining unit life of the wind power equipment based on the remaining component life of each component in the wind power equipment, and to decommission the wind power equipment when the remaining unit life of the wind power equipment is lower than a preset value. The transport module is used to transport substandard dismantled parts, and the positioning module, the intelligent cutting module and the sorting module are arranged sequentially at intervals along the transport direction of the transport module. The positioning module is used to adjust the posture of the parts. The CNC system module is used to plan the cutting route and determine the cutting parameters of the component using the intelligent cutting module, and to cut and decompose the component according to the planned cutting route and determined cutting parameters, and to sort and recycle the decomposed material using the sorting module. The numerical control system module is also used to obtain the economic life threshold of the wind power equipment based on the cumulative cost of the wind power equipment, the cumulative revenue of the wind power equipment, and the net profit from disposal of the wind power equipment; compare the economic life threshold of the wind power equipment with the preset value and the remaining life of the wind power equipment unit; and decommission the wind power equipment when the remaining life of the wind power equipment unit is less than the economic life threshold of the wind power equipment. The economic life threshold of the wind power equipment is determined by the following formula: ； The L 经济寿命阈值 Let C(t) be the economic life threshold of the wind turbine, C(t) be the marginal cost function for the continued operation of the wind turbine, R(t) be the marginal revenue function for the continued operation of the wind turbine, and V be the marginal cost function for the continued operation of the wind turbine. 净 This refers to the net profit from the disposal of resources after the wind power equipment is decommissioned.

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