Graphical self-adaptive pipeline type selection method and system for aircraft hydraulic system
By using a graphical adaptive pipeline selection method, the problem of relying on empirical formulas and lookup tables in the traditional design of aircraft hydraulic systems has been solved. This has enabled more scientific, accurate and efficient pipeline design, which can adapt to the design requirements of different aircraft models and improve design quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional aircraft hydraulic system piping design relies on empirical formulas and lookup tables, resulting in poor consistency of calculation results, material waste, low design efficiency, and a high probability of errors, making it difficult to meet the ever-increasing design accuracy and efficiency requirements of modern aircraft hydraulic systems.
A graphical adaptive pipeline selection method is adopted. By setting up multiple graphical modules and a pipeline selection analysis statistician, cross-linking relationships are established, the maximum flow rate inside the pipeline is calculated, and the appropriate pipeline material and specifications are automatically selected to generate a standardized document report.
It improves the automation and intelligence of pipeline design, reduces material waste and error probability, significantly improves design efficiency and consistency of calculation results, adapts to the design requirements of hydraulic systems of different aircraft models, shortens the design cycle and reduces costs.
Smart Images
Figure CN121808931A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electromechanical systems technology, and in particular to a graphical adaptive pipeline selection method and system for aircraft hydraulic systems. Background Technology
[0002] Piping design is a crucial aspect of aircraft hydraulic system design, decisively impacting the overall system's performance, reliability, and safety. Traditional methods for calculating piping specifications rely primarily on empirical formulas and lookup tables. While these methods can meet basic design requirements to some extent, their over-reliance on the designer's personal experience often presents significant limitations. Specifically, these traditional methods are susceptible to subjective influences, leading to inconsistent calculation results and potentially resulting in excessive material usage and waste. Furthermore, the cumbersome manual lookup and calculation process significantly reduces design efficiency and increases the probability of errors, making it difficult to meet the increasingly demanding accuracy and efficiency requirements of modern aircraft hydraulic systems. Therefore, exploring more scientific, efficient, and automated piping design methods is of paramount importance. Summary of the Invention
[0003] In view of this, embodiments of this application provide a graphical adaptive pipeline selection method and system for aircraft hydraulic systems, which at least partially solves the problems in the prior art where traditional pipeline design methods rely on empirical formulas and lookup tables, resulting in poor consistency of calculation results, material waste, low design efficiency, and high error probability.
[0004] In a first aspect, embodiments of this application provide a graphical adaptive piping selection method for an aircraft hydraulic system, the method comprising: Based on the design requirements for aircraft hydraulic system piping selection, multiple graphical modules and a piping selection analysis statistician are set up; Configure the attribute parameters for each graphics module; Establish the interconnection between multiple graphical modules and the pipeline selection analysis statistical tool; Set the calculation parameters for the pipeline selection analysis statistician; Identify energy systems that require pipeline selection and calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship; Based on the maximum flow rate inside the pipeline, adaptive pipeline selection is performed to obtain the pipeline material and specifications of the current energy system.
[0005] According to a specific implementation of an embodiment of this application, the method further includes: The obtained pipeline materials and specifications of the current energy system are input into the corresponding attribute parameters of the corresponding pipeline component graphic module, and a document report is generated. This document report provides a reference for the detailed design phase of the hydraulic system.
[0006] According to a specific implementation of an embodiment of this application, the plurality of graphic modules include: a hydraulic user graphic module, a pipeline component graphic module, a pipeline connector module, and a hydraulic accessory graphic module.
[0007] According to a specific implementation of an embodiment of this application, the step of setting attribute parameters for each graphics module includes: Configure attribute parameters for the hydraulic user graphics module, including maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The maximum power requirement parameter is used to set the user's maximum flow requirement under rated pressure; the mission profile parameters include the mission profile used by the aircraft during taxiing, takeoff, climb, cruise, and landing; the power requirement percentage parameter is used to set the ratio of power requirement to maximum power requirement under different mission profiles. Configure attribute parameters for the pipeline component graphic module, including pipeline material attribute parameters, pipeline pressure type parameters, and pipeline specification parameters. Pipeline material attribute parameters include three types: titanium alloy, stainless steel, and aluminum alloy. Pipeline pressure type parameters include high pressure, suction oil, and return oil. Pipeline specification parameters are used to select different pipe diameter specifications. Configure attribute parameters for the hydraulic accessory graphics module, including accessory classification parameters and flow information parameters. Accessory classification parameters include parameters for oil tanks, pump sources, and control valves; flow information parameters are used to set accessory flow parameters. Pipe connector modules are used for connecting pipes, and include straight connectors, tee connectors and four-way connectors.
[0008] According to a specific implementation of an embodiment of this application, establishing the cross-linking relationship between multiple graphical modules and the pipeline selection analysis statistician includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the hydraulic accessory graphics module is established sequentially based on the pipeline selection analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.
[0009] According to a specific implementation of an embodiment of this application, the calculation parameters include: hydraulic source, oil density, pipeline friction resistance, pipeline elbow resistance, number of pipeline elbows, material selection for pressure supply pipeline, material selection for suction pipeline, and material selection for return pipeline.
[0010] According to a specific implementation of an embodiment of this application, the identification of energy systems requiring pipeline selection includes: By identifying key attribute names such as dead oil and hydraulic source, the oil tank of the selected energy system is located. Then, the upstream and downstream of this oil tank are found through graph theory algorithm. The upstream and downstream of this oil tank constitute the energy system.
[0011] According to a specific implementation of an embodiment of this application, calculating the maximum flow rate inside the pipeline of the energy system based on the cross-linking relationship includes: Calculate the flow rate inside the pipeline under all task profiles: First, summarize the required flow rate under each user's task profile, and multiply the task profile percentage attribute in each user's graphical module by the maximum power requirement to obtain the required flow rate of each user's graphical module under each task profile. The system automatically allocates the supply flow of pumps and accumulators as the initial flow based on the power required by the user. Then, it iterates through all pipeline and equipment models under the current energy system to automatically calculate the flow allocation and obtain the flow status of all pipelines under each task profile. Based on the flow rate of all pipelines under each task profile, the maximum flow rate of the pipeline in all task profiles is obtained.
[0012] According to a specific implementation of an embodiment of this application, the step of adaptively selecting the pipeline based on the maximum flow rate inside the pipeline to obtain the pipeline material and specifications of the current energy system includes: Based on the maximum flow rate inside the pipeline, the set flow velocity, and the pipeline material, the inner diameter of the pipeline is calculated using a formula. Then, the pipeline selection is verified using the pipeline burst pressure formula. After verification, the pipeline material and specifications of the current energy system are determined.
[0013] Secondly, embodiments of this application also provide a graphical adaptive piping selection system for aircraft hydraulic systems, used to implement the graphical adaptive piping selection method for aircraft hydraulic systems as described in any embodiment of the first aspect, the system comprising: The graphical module setting module is used to set up multiple graphical modules and a pipeline selection analysis statistician according to the design requirements of aircraft hydraulic system pipeline selection; The attribute parameter setting module is used to set the attribute parameters of each graphics module; The cross-linking establishment module is used to establish cross-linking relationships between multiple graphical modules and the pipeline selection analysis statistician. The calculation parameter setting module is used to set the calculation parameters for the pipeline selection analysis statistician. The calculation module is used to identify energy systems that require pipeline selection and to calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship. The pipeline selection module is used to perform adaptive pipeline selection based on the maximum flow rate inside the pipeline, and to obtain the pipeline material and specifications of the current energy system.
[0014] Beneficial effects: The graphical adaptive pipeline selection method and system for aircraft hydraulic systems in this application embodiment achieves automation and intelligence in pipeline selection by setting up multiple graphical modules and a pipeline selection analysis statistician, and configuring detailed attribute parameters for each graphical module. This method not only overcomes the limitations of traditional pipeline design methods that rely excessively on empirical formulas and lookup tables, but also significantly improves design efficiency and the consistency of calculation results, effectively reducing material waste and the probability of errors. Simultaneously, by establishing the interconnection relationships between graphical modules, it can accurately identify the energy system and calculate the maximum flow rate within the pipeline, thereby enabling adaptive pipeline selection and providing a more scientific, accurate, and efficient solution for the design of aircraft hydraulic systems. Furthermore, this method possesses high flexibility and scalability, adapting to the design requirements of hydraulic systems for different aircraft models, providing strong support for the design and development of modern aircraft hydraulic systems. Practical application verification shows that this method can significantly improve design quality, shorten the design cycle, and reduce design costs, demonstrating broad application prospects and promotional value. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A flowchart of a graphical adaptive piping selection method for an aircraft hydraulic system according to an embodiment of the present invention; Figure 2 A schematic diagram illustrating the filling of relevant attributes of an automatic pipeline selection analysis statistician according to an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the automatic filling of pipeline model attributes after automatic pipeline selection according to an embodiment of the present invention. Detailed Implementation
[0017] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0018] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0020] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0021] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.
[0022] In a first aspect, embodiments of this application provide a graphical adaptive piping selection method for aircraft hydraulic systems, referring to... Figure 1 The method includes: Step 1: Based on the design requirements for the selection of aircraft hydraulic system pipelines, set up multiple graphical modules and a pipeline selection analysis statistician; Step 2: Set the attribute parameters for each graphics module; Step 3: Establish the interconnection between multiple graphical modules and the pipeline selection analysis statistical tool; Step 4: Set the calculation parameters for the pipeline selection analysis statistician; Step 5: Identify the energy system that requires pipeline selection, and calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship; Step 6: Based on the maximum flow rate inside the pipeline, perform adaptive pipeline selection to obtain the pipeline material and specifications of the current energy system.
[0023] In this embodiment, the graphical adaptive piping selection method for aircraft hydraulic systems transforms the complex piping selection process into an intuitive and easy-to-use graphical module, significantly reducing design complexity. Simultaneously, the adaptive selection mechanism automatically selects appropriate piping materials and specifications based on the calculated maximum flow rate within the piping, avoiding the limitations of traditional methods that rely on empirical formulas and lookup tables, thus improving the consistency and accuracy of calculation results. Furthermore, this method effectively reduces excessive material usage and waste, lowers design costs, improves design efficiency, and significantly reduces the probability of errors, meeting the increasingly stringent design precision and efficiency requirements of modern aircraft hydraulic systems.
[0024] In one embodiment, the method further includes: The obtained piping materials and specifications of the current energy system are input into the corresponding attribute parameters of the graphical modules of the piping components, generating a document report. This report serves as a reference during the detailed design phase of the hydraulic system. This step allows the design results to be saved and transmitted in a standardized document format, facilitating subsequent design reviews, modifications, and integration with other design stages. During the detailed design phase of the hydraulic system, designers can directly refer to these documents to quickly understand the material and specification information of the piping, eliminating the need for complex calculations and table lookups, thereby further improving design efficiency and ensuring the smooth progress of the entire aircraft hydraulic system design process. Moreover, the standardized document reports also facilitate knowledge accumulation and transfer, providing valuable reference data for the design of similar projects in the future.
[0025] In one embodiment, the plurality of graphical modules include: a hydraulic user graphical module, a pipeline component graphical module, a pipeline connector module, and a hydraulic accessory graphical module.
[0026] Furthermore, the setting of attribute parameters for each graphics module includes: Configure attribute parameters for the hydraulic user graphics module, including maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The maximum power requirement parameter is used to set the user's maximum flow requirement under rated pressure; the mission profile parameters include the mission profile used by the aircraft during taxiing, takeoff, climb, cruise, and landing; the power requirement percentage parameter is used to set the ratio of power requirement to maximum power requirement under different mission profiles. Configure attribute parameters for the pipeline component graphic module, including pipeline material attribute parameters, pipeline pressure type parameters, and pipeline specification parameters. Pipeline material attribute parameters include three types: titanium alloy, stainless steel, and aluminum alloy. Pipeline pressure type parameters include high pressure, suction oil, and return oil. Pipeline specification parameters are used to select different pipe diameter specifications. Configure attribute parameters for the hydraulic accessory graphics module, including accessory classification parameters and flow information parameters. Accessory classification parameters include parameters for oil tanks, pump sources, and control valves; flow information parameters are used to set accessory flow parameters. Pipe connector modules are used for connecting pipes, and include straight connectors, tee connectors and four-way connectors.
[0027] In this embodiment, attribute parameters were set for each module. Detailed and precise attribute parameter configuration allows for a more accurate simulation of the actual operation of the aircraft's hydraulic system. For the hydraulic user graphics module, the settings for maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters fully consider the differences in hydraulic requirements of the aircraft under different usage scenarios, making the selection results more closely match actual working conditions. The settings for pipe material attribute parameters, pipe pressure type parameters, and pipe specification parameters in the pipe component graphics module cover the key factors involved in pipe selection, enabling a comprehensive evaluation of the pipes from multiple dimensions to select the most suitable pipe material and specifications. The accessory classification parameters and flow information parameters set in the hydraulic accessory graphics module help to accurately understand the performance of accessories and their impact on flow, ensuring the coordinated operation of the entire hydraulic system. The different types of settings in the pipe connector module meet the diverse needs of pipe connections. This comprehensive attribute parameter setting method greatly improves the accuracy and reliability of pipe selection.
[0028] In one embodiment, establishing the cross-linking relationship between multiple graphical modules and the pipeline selection analysis statistician includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the hydraulic accessory graphics module is established sequentially based on the pipeline selection analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.
[0029] This method of establishing interconnected relationships constructs a logically clear and hierarchically structured system architecture, ensuring a close and orderly connection between the various graphical modules and between them and the pipeline selection analysis statistical unit. This interconnectedness accurately reflects the actual connections and interactions between components in the aircraft hydraulic system, ensuring that data is accurately transferred and processed between modules during subsequent calculations and analyses, thus providing a solid foundation for obtaining accurate pipeline selection results. Furthermore, it offers excellent scalability and flexibility; when modifications or upgrades are needed, adjustments are only required to the corresponding modules and interconnected relationships, without causing large-scale changes to the entire system, greatly improving its adaptability and maintainability.
[0030] In one embodiment, refer to Figure 2 The calculation parameters include: hydraulic source, oil density, pipeline friction resistance, pipeline elbow resistance, number of pipeline elbows, material selection for pressure supply pipeline, material selection for suction pipeline, and material selection for return pipeline.
[0031] In one embodiment, identifying energy systems requiring pipeline selection includes: By identifying key attribute names such as dead oil and hydraulic source, the oil tank of the selected energy system is located. Then, the upstream and downstream of this oil tank are found through graph theory algorithm. The upstream and downstream of this oil tank constitute the energy system.
[0032] In one embodiment, calculating the maximum flow rate inside the pipeline of the energy system based on the crosslinking relationship includes: Calculate the flow rate inside the pipeline under all task profiles: First, summarize the required flow rate under each user's task profile, and multiply the task profile percentage attribute in each user's graphical module by the maximum power requirement to obtain the required flow rate of each user's graphical module under each task profile. The system automatically allocates the supply flow of pumps and accumulators as the initial flow based on the power required by the user. Then, it iterates through all pipeline and equipment models under the current energy system to automatically calculate the flow allocation and obtain the flow status of all pipelines under each task profile. Based on the flow rate of all pipelines under each task profile, the maximum flow rate of the pipeline in all task profiles is obtained.
[0033] In this embodiment, the maximum flow rate within the pipelines of the energy system was calculated. This detailed and comprehensive calculation method allows for precise understanding of the flow rate variations in the pipelines under different mission profiles. The summary of the flow rate required for each user's mission profile, combined with the percentage attributes of the mission profile and the maximum power requirement, provides a scientific basis for determining the flow rate for each user's graphical module under each mission profile. The flow rate supplied by the automatic pump and accumulator is used as the initial flow rate, and the system iterates through all pipeline and equipment models to automatically allocate flow rates. This fully considers the mutual influence and flow distribution relationships between the components within the energy system, ensuring the accuracy and reliability of the calculation results. Finally, the maximum flow rate of the pipelines in all mission profiles is obtained, providing crucial data support for subsequent adaptive pipeline selection. This allows the selection results to better adapt to the needs of the aircraft hydraulic system under different operating conditions, further improving the scientific rigor and practicality of the entire pipeline selection method.
[0034] Furthermore, the adaptive selection of pipelines based on the maximum flow rate inside the pipeline to obtain the pipeline material and specifications of the current energy system includes: Based on the maximum flow rate inside the pipeline, the set flow velocity, and the pipeline material, the inner diameter of the pipeline is calculated using a formula. Then, the pipeline selection is verified using the pipeline burst pressure formula. After verification, the pipeline material and specifications of the current energy system are determined.
[0035] In one specific embodiment, this method, based on the domestically produced frame platform, associates the hydraulic system user end with pipeline connections, the user's energy system pump source and accessories, etc., and uses a graphical method to dynamically calculate the hydraulic system user flow. Based on the user's dynamic flow information and interconnection relationships, it calculates the flow information in each pipeline on the machine, and then automatically selects the pipeline specifications based on the pipeline flow information. (Refer to...) Figure 2 and Figure 3 Specifically, it includes the following steps: Step 1: Graphical Module Settings: Configure the hydraulic user graphical module, pipeline component graphical module, pipeline connector module, hydraulic accessory graphical module, and pipeline selection analysis and statistics tool. The graphical modules have attribute setting functions, and the pipeline selection analysis and statistics tool has logical judgment, statistical and keyword recognition functions.
[0036] Step 2: Module attribute parameter settings: Hydraulic user graphical module configuration attribute parameters: Maximum power requirement parameter, used to set the user's maximum flow requirement under rated pressure; Mission profile parameter, including aircraft usage mission profiles such as taxiing, takeoff, climb, cruise, and landing; Power requirement percentage parameter, used to set the ratio of power requirement to maximum power requirement under different mission profiles.
[0037] Pipeline component graphic module configuration attribute parameters: Pipeline material attribute parameters, divided into three types: titanium alloy, stainless steel, and aluminum alloy; Pipeline pressure type parameters, divided into three types: high pressure, suction oil, and return oil; Pipeline specification parameters, used for selecting different pipe diameter specifications.
[0038] The hydraulic accessory graphic module configures accessory classification parameters, which are divided into categories such as oil tanks, pump sources, and control valves; flow information parameters are used to set accessory flow parameters.
[0039] Pipe connector modules are used for pipe connections and are divided into straight connectors, tee connectors, four-way connectors, etc.
[0040] Step 3: Automatic Pipeline Selection Plugin Attribute Settings: Locate the corresponding pipeline calculation plugin and fill in the relevant calculation parameters: hydraulic source, oil density, pipeline friction resistance, pipeline elbow resistance, number of pipeline elbows, material selection for pressure supply pipeline, material selection for suction pipeline, and material selection for return pipeline, etc.
[0041] Step 4: Find the corresponding energy system through the algorithm: The automatic pipeline selection method first finds the oil tank of the selected energy system by identifying the key attribute names "structural dead oil" and "hydraulic source". Then, it finds the upstream and downstream of this oil tank by using graph theory algorithm. The upstream and downstream of this oil tank are the selected energy system (including all equipment models and pipelines of this system).
[0042] Step 5: Calculate the internal flow rate of the pipeline under all profiles: First, summarize the required flow rate of each user under each profile. Multiply the "Task Profile Percentage" attribute of each user by the "Maximum Power Requirement" to calculate the required flow rate of each user under each task profile.
[0043] The system automatically allocates the supply flow of the pump and accumulator as the initial flow rate based on the user's required power. It then iterates through all pipelines and models within the current system to automatically calculate the flow rate allocation. It can statistically analyze the different flow rates of all pipelines under each profile.
[0044] Step Six: Select pipe types based on the maximum flow rate inside the pipe at each cross-section: Based on the flow rate inside the pipe at each cross-section, obtain the maximum flow rate of the pipe at each cross-section. Using the maximum flow rate, the set flow velocity, and the pipe material information, the inner diameter of the pipe can be calculated using a formula. Then, the pipe selection is verified using the pipe burst pressure formula. After verification, the pipe material and specifications can be determined.
[0045] Formulas for calculating the inner diameter of pipes: , , .
[0046] Formula for calculating minimum pipe wall thickness: 1. When the wall thickness is less than or equal to 0.05 times the inner diameter, use the thin-walled cylinder method: , 2. When the wall thickness is greater than or equal to 0.1 times the outer diameter, use the thick-walled cylinder method: P = 4 * maximum working pressure , 3. When the wall thickness is greater than 0.05 times the inner diameter and less than 0.1 times the outer diameter, the minimum wall thickness = the wall thickness.
[0047] Pipeline burst pressure verification formula: If the burst pressure is checked using empirical formulas, and the verified burst pressure does not meet the requirement of being greater than 4 times the working pressure, then the selected pipeline wall thickness needs to be corrected.
[0048] α = Inner diameter / Minimum wall thickness .
[0049] Based on the calculated outer diameter and thickness of the pipe, the pipe specifications of the given materials are matched to find the closest pipe specifications as the actual specifications of the pipe.
[0050] Step 7: Automatically fill in the pipe material and specifications into the canvas model: Based on the selected pipe material and specifications, write them into the corresponding canvas pipe model attributes, and modify the canvas pipe model attribute colors for differentiation. Then, generate a Word document report of all modified pipe information and export it.
[0051] Secondly, embodiments of this application also provide a graphical adaptive piping selection system for aircraft hydraulic systems, used to implement the graphical adaptive piping selection method for aircraft hydraulic systems as described in any embodiment of the first aspect, the system comprising: The graphical module setting module is used to set up multiple graphical modules and a pipeline selection analysis statistician according to the design requirements of aircraft hydraulic system pipeline selection; The attribute parameter setting module is used to set the attribute parameters of each graphics module; The cross-linking establishment module is used to establish cross-linking relationships between multiple graphical modules and the pipeline selection analysis statistician. The calculation parameter setting module is used to set the calculation parameters for the pipeline selection analysis statistician. The calculation module is used to identify energy systems that require pipeline selection and to calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship. The pipeline selection module is used to perform adaptive pipeline selection based on the maximum flow rate inside the pipeline, and to obtain the pipeline material and specifications of the current energy system.
[0052] The embodiments provided by this invention achieve precise selection of aircraft hydraulic system pipelines through comprehensive and detailed graphical settings and parameter configurations. The method and system first set up various graphical modules according to actual needs and configure the attribute parameters of each module in detail, ensuring that each module accurately reflects the actual component characteristics of the aircraft hydraulic system. Next, by establishing the cross-linking relationship between the graphical modules and the pipeline selection analysis statistician, a logically clear and hierarchical system architecture is constructed, enabling accurate data transmission and processing between modules. During the calculation process, the method and system can identify energy systems requiring pipeline selection and accurately calculate the maximum flow rate inside the pipeline based on the cross-linking relationship, providing crucial data support for subsequent adaptive pipeline selection. Finally, based on the maximum flow rate inside the pipeline and preset flow velocity and material information, pipeline selection is performed through a scientifically sound calculation formula, ensuring the accuracy and reliability of the selection results. This method improves pipeline design efficiency, reduces manual calculation costs, simplifies operation, is convenient to use, has a high level of automation, and high generation efficiency. Furthermore, the method and system have good scalability and flexibility, which can adapt to the selection requirements of different aircraft hydraulic systems, greatly improving the efficiency and scientific nature of pipeline selection, and providing strong support for the design and optimization of aircraft hydraulic systems.
[0053] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A graphical adaptive pipeline selection method for aircraft hydraulic systems, characterized in that, The method includes: Based on the design requirements for aircraft hydraulic system piping selection, multiple graphical modules and a piping selection analysis statistician are set up; Configure the attribute parameters for each graphics module; Establish the interconnection between multiple graphical modules and the pipeline selection analysis statistical tool; Set the calculation parameters for the pipeline selection analysis statistician; Identify energy systems that require pipeline selection and calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship; Based on the maximum flow rate inside the pipeline, adaptive pipeline selection is performed to obtain the pipeline material and specifications of the current energy system.
2. The graphical adaptive pipeline selection method for aircraft hydraulic systems according to claim 1, characterized in that, The method further includes: The obtained pipeline materials and specifications of the current energy system are input into the corresponding attribute parameters of the corresponding pipeline component graphic module, and a document report is generated. This document report provides a reference for the detailed design phase of the hydraulic system.
3. The graphical adaptive pipeline selection method for aircraft hydraulic systems according to claim 1, characterized in that, The plurality of graphic modules include: a hydraulic user graphic module, a pipeline component graphic module, a pipeline connector module, and a hydraulic accessory graphic module.
4. The graphical adaptive pipeline selection method for aircraft hydraulic systems according to claim 3, characterized in that, The setting of attribute parameters for each graphics module includes: Configure attribute parameters for the hydraulic user graphics module, including maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The maximum power requirement parameter is used to set the user's maximum flow requirement under rated pressure; the mission profile parameters include the mission profile used by the aircraft during taxiing, takeoff, climb, cruise, and landing; the power requirement percentage parameter is used to set the ratio of power requirement to maximum power requirement under different mission profiles. Configure attribute parameters for the pipeline component graphic module, including pipeline material attribute parameters, pipeline pressure type parameters, and pipeline specification parameters. Pipeline material attribute parameters include three types: titanium alloy, stainless steel, and aluminum alloy. Pipeline pressure type parameters include high pressure, suction oil, and return oil. Pipeline specification parameters are used to select different pipe diameter specifications. Configure attribute parameters for the hydraulic accessory graphics module, including accessory classification parameters and flow information parameters. Accessory classification parameters include parameters for oil tanks, pump sources, and control valves; flow information parameters are used to set accessory flow parameters. Pipe connector modules are used for connecting pipes, and include straight connectors, tee connectors and four-way connectors.
5. The graphical adaptive pipeline selection method for aircraft hydraulic systems according to claim 3, characterized in that, The establishment of the interconnection relationship between multiple graphical modules and the pipeline selection analysis statistical tool includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the hydraulic accessory graphics module is established sequentially based on the pipeline selection analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.
6. The graphical adaptive piping selection method for aircraft hydraulic systems according to claim 1, characterized in that, The calculation parameters include: hydraulic source, oil density, pipeline friction resistance, pipeline elbow resistance, number of pipeline elbows, material selection for pressure supply pipeline, material selection for suction pipeline, and material selection for return pipeline.
7. The graphical adaptive piping selection method for aircraft hydraulic systems according to claim 1, characterized in that, The identification of energy systems requiring pipeline selection includes: By identifying key attribute names such as dead oil and hydraulic source, the oil tank of the selected energy system is located. Then, the upstream and downstream of this oil tank are found through graph theory algorithm. The upstream and downstream of this oil tank constitute the energy system.
8. The graphical adaptive pipeline selection method for aircraft hydraulic systems according to claim 1, characterized in that, The calculation of the maximum flow rate inside the pipeline of the energy system based on the cross-linking relationship includes: Calculate the flow rate inside the pipeline under all task profiles: First, summarize the required flow rate under each user's task profile, and multiply the task profile percentage attribute in each user's graphical module by the maximum power requirement to obtain the required flow rate of each user's graphical module under each task profile. The system automatically allocates the supply flow of pumps and accumulators as the initial flow based on the power required by the user. Then, it iterates through all pipeline and equipment models under the current energy system to automatically calculate the flow allocation and obtain the flow status of all pipelines under each task profile. Based on the flow rate of all pipelines under each task profile, the maximum flow rate of the pipeline in all task profiles is obtained.
9. The graphical adaptive piping selection method for aircraft hydraulic systems according to claim 1, characterized in that, The process of adaptively selecting pipelines based on the maximum flow rate within the pipeline to obtain the pipeline material and specifications of the current energy system includes: Based on the maximum flow rate inside the pipeline, the set flow velocity, and the pipeline material, the inner diameter of the pipeline is calculated using a formula. Then, the pipeline selection is verified using the pipeline burst pressure formula. After verification, the pipeline material and specifications of the current energy system are determined.
10. A graphical adaptive piping selection system for an aircraft hydraulic system, used to implement the graphical adaptive piping selection method for an aircraft hydraulic system as described in any one of claims 1-9, characterized in that, The system includes: The graphical module setting module is used to set up multiple graphical modules and a pipeline selection analysis statistician according to the design requirements of aircraft hydraulic system pipeline selection; The attribute parameter setting module is used to set the attribute parameters of each graphics module; The cross-linking establishment module is used to establish cross-linking relationships between multiple graphical modules and the pipeline selection analysis statistician. The calculation parameter setting module is used to set the calculation parameters for the pipeline selection analysis statistician; The calculation module is used to identify energy systems that require pipeline selection and to calculate the maximum flow rate inside the pipeline of the energy system based on the interconnection relationship. The pipeline selection module is used to perform adaptive pipeline selection based on the maximum flow rate inside the pipeline, and to obtain the pipeline material and specifications of the current energy system.