Rotor assembly disassembly apparatus and method

Abstract

The application discloses a rotor assembly disassembly device, comprising: a support centering tool, the size of the support centering tool is smaller than the inner cavity of the rotor; an electromagnetic induction disassembly tool, the electromagnetic induction disassembly tool comprises: an electromagnetic induction heating head, a sensor, a jacking part, and a control cabinet, the control cabinet is connected with the electromagnetic induction heating head, wherein the support centering tool can support and fix the electromagnetic induction disassembly tool, and the support centering tool and the electromagnetic induction disassembly tool are installed in situ to the rotor assembly, and wherein the control cabinet is configured to: collect parameters from the sensor during the heating process, and control the jacking of the jacking part based on the collected parameters to realize the disassembly of the rotor assembly. The associated rotor assembly disassembly method is also disclosed.

Description

Technical Field

[0001] This invention relates to the field of engine assembly, and more specifically to a stress-free electromagnetic induction heating-assisted rotor assembly disassembly device and method. Background Technology

[0002] The high-pressure rotor is a core component of an aero-engine, mainly comprising the high-pressure compressor rotor assembly and the high-pressure turbine rotor assembly. These rotor assemblies are assembled from multiple shafts, discs, drums, and numerous rotor parts such as nuts and fasteners, using interference fits and bolt connections. The assembly condition and connection quality of the rotor assembly are crucial, determining not only its geometric characteristics, imbalance, and stiffness, but also directly affecting the vibration response characteristics of the entire engine, and consequently indirectly influencing the comprehensive performance indicators of the entire engine during long-term service, such as service life, reliability, and safety.

[0003] After long-term service or testing, the mating surfaces of the interference fit structure of an aero-engine rotor undergo complex changes in their connection state. In traditional processes, hydraulic jacks or pullers are typically used to directly disassemble the rotor. However, when the interference fit is large, the disassembly force can reach several tons, easily causing damage to the loading and mating surfaces, as well as plastic deformation of surrounding parts. Under high disassembly forces, parts may suddenly pop out, causing impact damage to surrounding components, or even rendering them unusable. Traditional disassembly processes not only pose significant safety hazards and severely impact subsequent rotor assembly and testing, but the deformation and damage to rotor parts during disassembly also burden subsequent troubleshooting and repair work.

[0004] Under high temperature, high pressure, and complex load conditions, the connecting surfaces of rotor assemblies undergo changes in their mechanical and physical state, such as deformation, high-temperature oxidation, and fretting wear. Therefore, when disassembling the rotor assembly after commissioning, some disassembly methods utilize hydraulic disassembly fixtures due to the significant disassembly forces on the rotor connecting structures. However, this method has a long disassembly cycle and is prone to damage to interference fit surfaces and plastic deformation of rotor parts subjected to reaction forces. If the ejector is not operated carefully, the rotor may even spring back and collide with surrounding parts at the moment of separation, posing a significant safety risk.

[0005] To address the shortcomings of existing technologies, it is desirable to provide an improved rotor assembly disassembly apparatus and method. Summary of the Invention

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify the key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as an introduction to the more detailed description that follows.

[0007] This invention provides a rotor assembly disassembly device, comprising: a support and centering fixture, the size of which is smaller than the inner cavity of the rotor; and an electromagnetic induction disassembly fixture, comprising: an electromagnetic induction heating head, a sensor, a lifting component, and a control cabinet, the control cabinet being connected to the electromagnetic induction heating head. The support and centering fixture supports and fixes the electromagnetic induction disassembly fixture, and both the support and centering fixture and the electromagnetic induction disassembly fixture are installed in situ onto the rotor assembly. The control cabinet is configured to: collect parameters from the sensor during the heating process, and control the lifting of the lifting component based on the collected parameters to achieve the disassembly of the rotor assembly.

[0008] In some embodiments, the sensor includes a temperature sensor and a force sensor.

[0009] In some embodiments, the parameters collected include at least one of the following: heating temperature, heating time, lifting force, and lifting displacement.

[0010] In some embodiments, the supporting centering fixture is insulated, and the electromagnetic induction heating head includes an insulating housing.

[0011] In some embodiments, the electromagnetic induction heating head includes a heating head body and a connecting portion, one end of which extends from the top of the heating head body and the other end of which is connected to the control cabinet.

[0012] In some embodiments, the lifting member includes a central push rod, which is detachably mounted on and tightly fitted with a support centering fixture, a heating head body surrounds the central push rod, and both the central push rod and the heating head body are located within the rotor cavity.

[0013] In some embodiments, the lifting member includes a lifting sleeve, the heating head body is detachably mounted on and tightly fitted with the support and centering fixture, the lifting sleeve surrounds the heating head body, and both the lifting sleeve and the heating head body are within the inner cavity of the rotor.

[0014] The present invention also provides a method for disassembling a rotor assembly using the aforementioned rotor assembly disassembly device, comprising: removing all connecting nuts associated with the rotor assembly to be disassembled; installing a support centering fixture in situ into the inner cavity of the rotor; installing an induction heating disassembly fixture in situ into the rotor assembly; controlling an electromagnetic induction heating head via a control cabinet to heat and disassemble the rotor assembly; and disassembling the induction heating disassembly fixture and the support centering fixture after disassembly.

[0015] In some embodiments, the damage principle module is further configured to: establish a tolerance design state for a part based on a first analysis result, the tolerance design state indicating the design criteria followed by the part and the corresponding part limitation range; and determine a damage principle based on the tolerance design state.

[0016] In some embodiments, the method further includes: during the rotor assembly disassembly process, the control cabinet acquires parameters from sensors and controls the lifting of the lifting component based on the acquired parameters to achieve the disassembly of the rotor assembly.

[0017] In some embodiments, the parameters collected include heating temperature, and the method further includes stopping heating when the heating temperature reaches a preset temperature.

[0018] In some embodiments, the parameters collected include heating time, and the method further includes stopping heating when the heating time reaches a preset time.

[0019] In some embodiments, the parameters collected include the lifting force of the lifting member, and the method further includes: monitoring the lifting force of the lifting member during heating to make the lifting force reach a preset lifting force.

[0020] In some embodiments, the parameters collected include the lifting displacement of the lifting member, and the method further includes: monitoring the lifting displacement of the lifting member during heating to make it reach a preset displacement.

[0021] The technical solution of this invention utilizes an in-situ induction heating fixture within the rotor cavity to heat the center of the rotor disk. This facilitates stress-free disassembly of the connected components, avoiding scratches on the mounting edges and marks that may be caused by using pullers or pushers. This reduces the risk of crack initiation and improves the safety of the rotor disassembly process. Simultaneously, the rotor assembly disassembly device of this invention enables small-scale disassembly within a confined space. This avoids applying excessive disassembly force to overcome friction at the mounting edges when the interference fit is large, which could lead to plastic deformation or sudden ejection of the parts, damaging the parts themselves and surrounding components. It also eliminates hydraulic cylinder leakage problems caused by heavy-load disassembly. Furthermore, the rotor assembly disassembly process of this invention is relatively stable. Sensors can monitor the temperature and stress state of the mounting edges in real time, enabling effective control of the rotor's condition. Compared to traditional hydraulic disassembly technology, electromagnetic heating disassembly technology offers higher heating efficiency and faster disassembly speed, significantly improving the efficiency of overhauling and troubleshooting aero-engine rotors. Attached Figure Description

[0022] The features, essence, and advantages of the invention will become more apparent when understood in conjunction with the accompanying drawings, which provide a detailed description. In the drawings, the same reference numerals are consistently used. It should be noted that the described drawings are schematic and non-limiting. Some components in the drawings may be enlarged and are not drawn to scale for illustrative purposes.

[0023] Figure 1 A schematic diagram of an aircraft engine rotor assembly is shown.

[0024] Figure 2 A cross-sectional view of a first example of the rotor assembly disassembly apparatus of the present invention is shown.

[0025] Figure 3 A perspective view of a first example of the rotor assembly disassembly apparatus of the present invention is shown.

[0026] Figure 4 A cross-sectional view of a second example of the rotor assembly disassembly apparatus of the present invention is shown.

[0027] Figure 5 A perspective view of a second example of the rotor assembly disassembly apparatus of the present invention is shown.

[0028] Figure 6 A three-dimensional schematic diagram of the electromagnetic induction heating head of the present invention is shown.

[0029] Figure 7 A flowchart of the rotor assembly disassembly method of the present invention is shown. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the described exemplary embodiments. However, it will be apparent to those skilled in the art that the described embodiments can be practiced without some or all of these specific details. In other exemplary embodiments, well-known structures have not been described in detail to avoid unnecessarily obscuring the concepts of this disclosure. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the various aspects described in the embodiments can be combined arbitrarily without conflict.

[0031] Figure 1 A schematic diagram of an aero-engine rotor assembly is shown, with a system schematic diagram of the aero-engine rotor assembly on the left and a schematic diagram of the connection end face of the aero-engine rotor assembly on the right.

[0032] For most aero-engine rotors, especially core rotors, their assembly connection structure features three connected parts, two interference fit cylindrical surfaces (auxiliary mating surfaces), two connecting end faces (main mating surfaces), and multiple bolt connections.

[0033] The two connected parts (front and back) Figure 1 The components shown as "connected part 1" and "connected part 3" are enclosed parts, forming annular mounting edges. Their primary function is to support and connect the surrounding components, providing a basic framework for the stable operation of the entire rotor assembly. The single wheel in the middle ( Figure 1 The part shown as "connected part 2" is an enclosing part, whose structure allows the wheel to fit tightly with the enclosing parts at both ends.

[0034] In terms of connection method, this structure has two interference-fit cylindrical surfaces. These two surfaces serve as auxiliary mating surfaces, ensuring a tight fit between the connected components in the radial direction through interference fit. This effectively prevents loosening of the connection due to radial displacement, thereby ensuring the relative positional stability of each component during high-speed rotor rotation. Simultaneously, the two connecting end faces serve as the main mating surfaces, undertaking the primary axial connection function. Through precise end face fit, the connected components are tightly connected in the axial direction, jointly bearing the axial force generated by the rotor during operation and maintaining the axial stiffness and stability of the entire rotor assembly.

[0035] However, this interference fit structure of aero-engine rotors also faces some challenges. When there is a significant difference in the interference forces of the two interference fit cylinders, the connection with the smaller interference force tends to detach first during rotor assembly disassembly. This unexpected disassembly sequence can lead to difficulties in subsequent disassembly work. On the one hand, prematurely detached connections may compromise the original assembly precision, making it difficult to restore the initial state during reassembly. On the other hand, without targeted pullers to assist disassembly, the connection with the larger interference force will be difficult to disassemble smoothly. This not only increases the difficulty and time cost of maintenance work but may also cause unnecessary damage to components during maintenance, thereby affecting the service life and performance of the rotor assembly.

[0036] Figure 2 A cross-sectional view of a first example of the rotor assembly disassembly apparatus 200 of the present invention is shown.

[0037] To more clearly explain the structure and working principle of the rotor assembly disassembly device, Figure 2 The rotor assembly shown includes three connected components: 1, 2, and 3. Connected components 1 and 3 are enclosed components, while connected component 2 is an enclosing component.

[0038] The rotor assembly disassembly device 200 mainly consists of two core parts: a support and centering fixture and an electromagnetic induction disassembly fixture. The support and centering fixture plays a crucial role in the device, providing stable support and precise positioning for the entire disassembly process. Figure 2 In this design, the centering support is implemented as a centering ring 6. The size of the centering ring 6 is smaller than the inner cavity of the rotor. In this way, the centering ring 6 can be installed in situ into the inner cavity of the rotor without additional disassembly or modification of the rotor, thus avoiding damage to the rotor structure.

[0039] The electromagnetic induction disassembly fixture mainly includes an electromagnetic induction heating head 8, a sensor 10, a lifting component 7, and a control cabinet 21. The control cabinet 21 is connected to the electromagnetic induction heating head 8 to precisely control the heating process. Compared to traditional heating methods, electromagnetic induction heating offers numerous advantages, including rapid heating, precise temperature control, high energy efficiency, and environmental friendliness. During the heating process, the electromagnetic induction heating head 8 quickly transfers heat to key parts of the rotor assembly, bringing them to the required decomposition temperature.

[0040] In addition to the aforementioned core components Figure 2The diagram also shows some auxiliary parts: screw 4, base 5, puller frame 9, saddle 11, hydraulic cylinder 12, adapter plate 13, lifting ring 14, screw 15, and nut 16. These auxiliary parts are mainly used to assist in the installation and operation of the centering fixture and the electromagnetic induction disassembly fixture. For example, screws 4 and 15 serve a fastening function, firmly connecting the various components together to prevent loosening or falling off during operation. Base 5 provides a stable base for the entire rotor assembly disassembly device, ensuring that the rotor assembly disassembly device will not shake or shift during operation. Hydraulic cylinder 12 can provide strong power support as needed to assist the lifting component 7 in completing the lifting action, thereby realizing the disassembly of the rotor assembly. Adapter plate 13 mainly serves as a connection and transition, effectively connecting the power components such as hydraulic cylinder 12 to the rotor assembly, ensuring efficient power transmission. Lifting ring 14 facilitates the handling and installation of the rotor assembly disassembly device, making the transfer of the entire rotor assembly disassembly device between different work sites more convenient, improving the flexibility and versatility of the device.

[0041] In various embodiments of the present invention, the support centering fixture can support and fix the electromagnetic induction disassembly fixture, and the support centering fixture and the electromagnetic induction disassembly fixture are installed in situ onto the rotor assembly.

[0042] In various embodiments of the present invention, the control cabinet 21 is configured to: collect parameters from the sensor 10 during the heating process, and control the lifting of the lifting member 7 based on the collected parameters to achieve the disassembly of the rotor assembly.

[0043] In various embodiments of the present invention, the sensors include (but are not limited to) temperature sensors and force sensors (for simplicity, Figure 2 (Not shown separately). Temperature sensors monitor temperature changes in real time during the heating process, ensuring the heating temperature remains within a suitable range—neither too high, which could damage the rotor assembly, nor too low, which would prevent the required decomposition temperature. Force sensors monitor the magnitude of the lifting force during decomposition. Precise control of the lifting force avoids unnecessary damage to the rotor assembly and ensures the smooth progress of the decomposition process.

[0044] The control cabinet 21 may also include a communication module, enabling efficient and stable communication with various sensors. Through the communication module, the control cabinet 21 can collect various parameters from the sensors, including heating temperature, heating time, lifting force, and lifting displacement. These parameters provide the control cabinet 21 with comprehensive and accurate information, allowing it to adjust the heating and lifting strategies in real time according to actual conditions, thereby achieving precise control of the entire decomposition process. For example, when the temperature sensor detects that the heating temperature is close to the set value, the control cabinet 21 can promptly adjust the power of the electromagnetic induction heating head 8 to maintain it in a suitable heating state. When the force sensor detects that the lifting force reaches a certain threshold, the control cabinet 21 can control the lifting component 7 to pause lifting or adjust the lifting speed to ensure the safety and reliability of the decomposition process.

[0045] To further improve the safety and reliability of the rotor assembly disassembly device, this invention places special emphasis on insulation performance in its design. The supporting centering ring 6 is made of insulating material, and the electromagnetic induction heating head 8 also includes an insulating shell. This design not only effectively prevents current leakage and ensures the personal safety of operators, but also ensures a uniform temperature field distribution during the heating process. A uniform temperature field is crucial for the disassembly of the rotor assembly, as it can prevent uneven disassembly or damage caused by excessively high or low local temperatures, thereby improving the success rate and quality of disassembly.

[0046] The electromagnetic induction heating head includes a heating head body and a connecting part. One end of the connecting part extends from the top of the heating head body and the other end is connected to the control cabinet 21.

[0047] The lifting component 7 includes a central lifting rod, which is detachably mounted on and tightly fitted with the support centering ring 6. The heating head body surrounds the central lifting rod, and both the central lifting rod and the heating head body are located within the rotor's inner cavity. This tight-fitting structure ensures that both the central lifting rod and the heating head body are stably positioned within the rotor's inner cavity, allowing for uniform heat transfer to key parts of the rotor assembly during heating, thus providing strong support for the disassembly process.

[0048] In traditional rotor assembly disassembly processes, the tightness of the interference fit typically requires significant external force to overcome the friction between the mating surfaces. This often leads to stress concentration at the mounting edges and other areas of the rotor assembly, resulting in scratches, marks, and even cracks, posing potential risks to subsequent rotor use and maintenance. This invention, however, uses an electromagnetic induction heating head to heat the rotor disk's center in situ. During heating, the disk's thermal expansion naturally eliminates the interference fit, achieving stress-free disassembly of the connected components. This method avoids stress concentration caused by external forces, significantly reducing the risk of damage to the rotor assembly, improving the safety of the rotor disassembly process, and also reducing the workload and cost of subsequent repair and maintenance.

[0049] To better understand the structure of the rotor assembly disassembly device 200 Figure 3 A three-dimensional view of the device is shown.

[0050] Figure 4 A cross-sectional view of a second example of the rotor assembly disassembly apparatus 400 of the present invention is shown.

[0051] Specifically, Figure 4 The figure shows the connected parts (1), (2), and (3) of the rotor assembly. Figure 4 Also shown are screws (4), base (5), sensor (10), saddle (11), hydraulic cylinder (12), adapter plate (13), lifting eyelet (14), screws (15), nuts (16), and control cabinet (21). These components and parts are related to... Figure 2 Similarities exist in other contexts, so I will not elaborate further here.

[0052] The structure and Figure 2 The rotor assembly disassembly device 200 differs in the following components: support centering ring 17, lifting component 18, electromagnetic induction heating head 19, and puller frame 20.

[0053] Specifically, in the rotor assembly disassembly device 400, the lifting member 18 is implemented as a lifting sleeve, which surrounds the heating head body, and both the lifting sleeve and the heating head body are within the rotor's inner cavity. The heating head body of the electromagnetic induction heating head 19 is detachably mounted on and tightly fitted with the support centering ring 17. It can be seen that the main difference between the rotor assembly disassembly device 400 and the rotor assembly disassembly device 200 lies in the structure and relative position of the electromagnetic induction heating head and the lifting member. Due to the changes in the structure and / or position of the aforementioned components, the structure of the puller frame 20 also differs. Figure 2 The extraction frame 9 is slightly different. However, it should be noted that although... Figure 2 and Figure 4 These components are different, but their functions are the same; only the implementation methods are different.

[0054] Similarly, in order to better understand the structure of the rotor assembly disassembly device 400, Figure 5 A three-dimensional view of the device is shown.

[0055] Figures 2-5 The rotor assembly disassembly device exhibits numerous advantages. Firstly, its highly efficient heating and disassembly capabilities significantly shorten the disassembly time of the rotor assembly, which is crucial for improving production efficiency and reducing maintenance costs. Secondly, the precise control capabilities of the rotor assembly disassembly device ensure high-quality completion of the disassembly process. By accurately monitoring and controlling parameters such as heating temperature and lifting force, unnecessary damage to the rotor assembly can be avoided, extending its service life. Furthermore, the rotor assembly disassembly device can be installed in situ onto the rotor assembly, effectively preventing damage to the rotor structure.

[0056] Figure 6 A three-dimensional schematic diagram of the electromagnetic induction heating head of the present invention is shown.

[0057] like Figure 6 As shown, the electromagnetic induction heating head includes a heating head body and a connecting part. The heating head body is hollow cylindrical in shape. This hollow structural design not only effectively reduces the weight of the heating head, facilitating installation and operation, but also provides a relatively stable internal space for the electromagnetic induction process, ensuring uniform and efficient heating. Simultaneously, the diameter of the upper part of the heating head body is smaller than the diameter of the lower part. The diameter of the lower part of the heating head body is set to be slightly smaller than the diameter of the disc bore of the rotor assembly. In this way, it can be ensured that the heating head body can be installed in situ into the inner cavity of the rotor, achieving seamless connection between the heating head and the rotor, greatly improving heating efficiency and the stability of the heating process, and avoiding problems such as uneven heating or equipment damage caused by improper installation.

[0058] The connection part of the electromagnetic induction heating head is cable-shaped, with one end extending from the top of the heating head body and the other end having a reserved interface for connection to the control cabinet. Figure 6 (Not shown in the image). The cable-like design of the connector not only ensures the electrical connection between the heating head and the control cabinet, but also has good flexibility, facilitating flexible connection in different equipment layouts and installation environments.

[0059] By connecting to the control cabinet, the heating process of the electromagnetic induction heating head can be precisely controlled. The control cabinet integrates an advanced control module that can accurately control the heating operation of the electromagnetic induction heating head according to actual heating needs, including starting heating, stopping heating, controlling heating temperature, and setting heating time. This intelligent control method not only improves the automation level of the heating process but also allows for flexible adjustment of heating parameters according to different process requirements, ensuring optimal heating results.

[0060] In addition, the electromagnetic induction heating head also includes an insulating shell. During electromagnetic induction heating, the presence of an electromagnetic field may cause electromagnetic arcing, which can not only interfere with the normal heating process but also pose safety hazards. The insulating shell effectively isolates the electromagnetic field from the external environment, preventing electromagnetic arcing and ensuring the safety and reliability of the heating process. Simultaneously, the insulating shell also provides thermal insulation, reducing heat loss, further improving heating efficiency, and extending the lifespan of the heating head.

[0061] Figure 7 A flowchart of the rotor assembly disassembly method 700 of the present invention is shown.

[0062] Method 700 begins at step 705. In step 705, all connecting nuts associated with the rotor assembly to be disassembled are removed.

[0063] These connecting nuts play a crucial role in securing and connecting various components during rotor assembly, and therefore must be removed before disassembly. To ensure smooth disassembly, specialized tooling can be used. This tooling is designed to perfectly match the size and shape of the connecting nuts, providing sufficient torque and stability during disassembly and preventing damage to the nuts or difficulties in disassembly due to unsuitable tools.

[0064] In step 710, the support centering fixture is installed in situ into the inner cavity of the rotor.

[0065] After removing all connecting nuts, the support centering fixture can be installed in situ inside the rotor cavity. Because the size of the support centering fixture is smaller than the rotor cavity, it can be installed in situ without causing any damage to the rotor structure.

[0066] In step 715, the induction heating disassembly fixture is installed in situ on the rotor assembly.

[0067] After the support and centering fixture is installed, the induction heating disassembly fixture can be installed. Because the support and centering fixture supports and secures the electromagnetic induction disassembly fixture, the induction heating disassembly fixture can be tightly mated with it without slippage. After installing the induction heating disassembly fixture, a comprehensive inspection of its mechanical and electrical condition is necessary to ensure it functions properly. This includes checking the reliability of the connection between the electromagnetic induction heating head and the support and centering fixture, the correctness of the electrical wiring connections, and the robustness of the heating head's mechanical structure. Only after confirming that all components are in good working order can the next step of the heating and disassembly process proceed. The correct installation of the induction heating disassembly fixture is crucial for achieving efficient rotor assembly disassembly; it directly affects the efficiency of the heating process and the disassembly effect.

[0068] After the induction heating disassembly fixture is installed, method 700 proceeds to step 720. In step 720, the electromagnetic induction heating head is controlled by the control cabinet to heat and disassemble the rotor assembly.

[0069] The heating and decomposition operations can be automated through a control cabinet. Operators only need to set the corresponding parameters on the control cabinet, and the entire heating and decomposition process can be carried out automatically. For example, the heating and decomposition program can be started through the control cabinet, and heating can be achieved by precisely controlling the electromagnetic induction heating head to decompose the rotor assembly.

[0070] In some embodiments of the present invention, during the rotor assembly disassembly process, the control cabinet can collect various parameters from sensors and control the lifting of the lifting components based on the collected parameters to achieve the disassembly of the rotor assembly.

[0071] Specifically, the control cabinet can collect parameters from sensors, including (but not limited to) heating temperature, heating time, lifting force, and lifting displacement. By monitoring and analyzing these parameters, the control cabinet can precisely control the entire heating and decomposition process.

[0072] In some examples, when the heating temperature reaches a preset temperature (e.g., 150°C, 160°C, etc.), the control cabinet can control the electromagnetic induction heating head to stop heating. The preset temperature can be set by those skilled in the art according to the actual situation.

[0073] In some examples, the control cabinet can control the electromagnetic induction heating head to stop heating when the heating time reaches a preset time. The preset time can be set by those skilled in the art based on factors such as the size and material of the rotor assembly and the heating power to ensure that the heating process meets the decomposition requirements without overheating and damaging the rotor assembly.

[0074] In some examples, the control cabinet can monitor the lifting force of the lifting components during heating to ensure that the lifting force reaches a preset level. During rotor assembly disassembly, the control cabinet can control the magnitude of the lifting force by adjusting the pressure of the hydraulic system based on the preset lifting force. Furthermore, if the detected lifting force is too high (e.g., exceeding the preset lifting force), the control cabinet can automatically adjust the pressure of the hydraulic system to ensure that the lifting force remains within a safe range. This real-time monitoring and automatic adjustment mechanism can dynamically adjust the lifting speed to achieve the preset lifting force while effectively preventing component damage due to excessive lifting force.

[0075] In some examples, the control cabinet can monitor the lifting displacement of the lifting components during heating to ensure they reach a preset displacement. During rotor assembly disassembly, the control cabinet can control the lifting process based on the preset displacement. If the monitored lifting displacement reaches the preset displacement, the control cabinet can automatically stop further movement of the lifting components. Furthermore, the control cabinet can dynamically adjust the lifting speed to ensure a smooth disassembly process.

[0076] By precisely detecting and controlling the lifting force and displacement, an efficient and safe disassembly process can be achieved. This method not only improves disassembly efficiency but also significantly reduces the risk of human error.

[0077] Using the above method, the control cabinet can dynamically collect parameters during the heating process and precisely control and adjust the decomposition process based on these parameters. The entire decomposition process can be automated, greatly improving decomposition efficiency, simplifying the operation process, and enhancing the safety of the decomposition process.

[0078] In step 725, after the decomposition is completed, the induction heating decomposition fixture and the support centering fixture are disassembled.

[0079] In some embodiments, the rotor assembly disassembly apparatus of the present invention may further include a blowing device. Before disassembling the induction heating disassembly fixture and the support centering fixture, the heating area can be rapidly cooled by blowing air through the blowing device. Rapid cooling can prevent component deformation or damage caused by high temperatures. After the temperature of the heating area has decreased to a safe range, the induction heating disassembly fixture and the support centering fixture can be disassembled sequentially in the reverse order of installation.

[0080] After disassembling the induction heating disassembly fixture and the support centering fixture, the entire rotor assembly disassembly process is complete, and method 700 ends.

[0081] The in-situ electromagnetic induction heating-assisted rotor assembly disassembly method proposed in this invention enables rapid heating of disc-shaped rotor parts, eliminates interference fit, and supports in-situ disassembly and state adjustment of rotor assemblies. The technical solution of this invention solves the problems of long disassembly cycles, wear and scratches on tight-fitting surfaces caused by high-stress disassembly in existing processes, and eliminates the risk of plastic deformation and part ejection in engine structural components subjected to reaction forces. Furthermore, the small size and light weight of the induction heating disassembly fixture avoids the hydraulic cylinder leakage problem in traditional disassembly techniques. In addition, the rotor assembly disassembly method of this invention improves disassembly efficiency and achieves dynamic measurement of disassembly force and automated, precise control of lifting distance.

[0082] The detailed description above, in conjunction with the accompanying drawings, describes examples but does not represent all examples that can be implemented or fall within the scope of the claims. The terms "example" and "exemplary" are used in this specification to mean "serving as an example, instance, or illustration" and do not imply "superiority or superiority over other examples."

[0083] Throughout this specification, the terms "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the invention. Therefore, the use of these phrases may refer to more than one embodiment. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0084] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be understood by those skilled in the art, and the universal principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, wherein references to the singular form of an element, unless specifically stated otherwise, are not intended to mean “one and only one,” but rather “one or more.” Unless specifically stated otherwise, the term “some” refers to one or more. All structural and functional equivalents of the various aspects of the invention described throughout are expressly incorporated herein by reference and are intended to be covered by the claims.

[0085] It should also be noted that these embodiments may be described as processes depicted as flowcharts, flow diagrams, structure diagrams, or block diagrams. Although a flowchart may describe the operations as a sequential process, many of these operations can be executed in parallel or concurrently. Furthermore, the order of these operations can be rearranged.

[0086] While various embodiments have been described and illustrated, it should be understood that the embodiments are not limited to the precise configurations and components described above. Various modifications, substitutions, and improvements that will be apparent to those skilled in the art can be made to the arrangement, operation, and details of the apparatus disclosed herein without departing from the scope of the claims.

Claims

1. A rotor assembly disassembly device, comprising: A centering support fixture, the size of which is smaller than the inner cavity of the rotor; An electromagnetic induction disassembly fixture, comprising: an electromagnetic induction heating head, a sensor, a lifting component, and a control cabinet, wherein the control cabinet is connected to the electromagnetic induction heating head. The supporting and centering fixture supports and fixes the electromagnetic induction disassembly fixture, and both the supporting and centering fixture and the electromagnetic induction disassembly fixture are installed in situ onto the rotor assembly. The control cabinet is configured to collect parameters from the sensors during the heating process and control the lifting of the lifting component based on the collected parameters to achieve the disassembly of the rotor assembly.

2. The apparatus according to claim 1, characterized in that, The sensors include a temperature sensor and a force sensor.

3. The apparatus according to claim 2, characterized in that, The collected parameters include at least one of the following: heating temperature, heating time, lifting force, and lifting displacement.

4. The apparatus according to claim 1, characterized in that, The supporting centering fixture is insulated, and the electromagnetic induction heating head includes an insulating shell.

5. The apparatus according to claim 1, characterized in that, The electromagnetic induction heating head includes a heating head body and a connecting part. One end of the connecting part extends from the top of the heating head body and the other end is connected to the control cabinet.

6. The apparatus according to claim 1, characterized in that, The lifting component includes a central lifting rod, which is detachably mounted on and tightly fitted to the support and centering fixture. The heating head body surrounds the central lifting rod, and both the central lifting rod and the heating head body are located within the inner cavity of the rotor.

7. The apparatus according to claim 1, characterized in that, The lifting component includes a lifting sleeve, the heating head body is detachably mounted on and tightly fitted with the support and centering fixture, the lifting sleeve surrounds the heating head body, and both the lifting sleeve and the heating head body are located within the inner cavity of the rotor.

8. A method for disassembling a rotor assembly using the rotor assembly disassembly apparatus according to any one of claims 1 to 7, comprising: Remove all connecting nuts associated with the rotor assembly to be disassembled; The centering and support fixture is installed in situ inside the rotor cavity; The induction heating disassembly fixture is installed in situ onto the rotor assembly; The electromagnetic induction heating head is controlled by the control cabinet to heat and disassemble the rotor assembly; as well as After disassembly, the induction heating disassembly fixture and the support centering fixture are disassembled.

9. The method according to claim 8, characterized in that, Further includes: During the rotor assembly disassembly process, the control cabinet collects parameters from sensors and controls the lifting of the jacking components based on the collected parameters to achieve the disassembly of the rotor assembly.

10. The method according to claim 9, characterized in that, The collected parameters include heating temperature, and the method further includes: Heating will stop when the preset temperature is reached.

11. The method according to claim 9, characterized in that, The collected parameters include heating time, and the method further includes: Heating will stop when the preset heating time is reached.

12. The method according to claim 9, characterized in that, The collected parameters include the lifting force of the lifting component, and the method further includes... During heating, monitor the lifting force of the lifting component to ensure that the lifting force reaches the preset lifting force.

13. The method according to claim 12, characterized in that, The collected parameters include the lifting displacement of the lifting component, and the method further includes: During heating, monitor the lifting displacement of the lifting component to ensure it reaches the preset displacement.

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