Multi-section independent temperature control test and adaptation system for sealing element

Abstract

The invention belongs to the field of sealing elements, and relates to a multi-section independent temperature control test and adaptation system for a sealing element. The multi-section independent temperature control module is used for setting temperature zone parameters according to sealing element test requirements and executing independent regulation and control; the multi-section heating execution module is used for realizing sectional heating according to the temperature zone parameters; the temperature field feedback and correction module is used for collecting temperature data of each temperature zone and feeding back and correcting; the sealing element test and adaptation module is used for completing sealing element performance test and adaptation optimization based on a stable temperature field, all the modules form a complete test adaptation system through data interaction and control linkage, temperature zone coupling interference is effectively restrained through temperature zone flexible division, single temperature zone independent regulation and control and the synergistic effect of the gradient cooperation module, and the performance of the sealing element is improved. Temperature zone distribution can be customized according to the structure of the sealing element and test requirements, complex working conditions such as gradient temperature and limiting temperature can be accurately reproduced, the authenticity of a test scene is improved, and accurate controllability and flexible adaptation of a multi-zone temperature field are achieved.

Description

Technical Field

[0001] This invention belongs to the field of sealing components, and in particular to a multi-section independent temperature control testing and adaptation system for sealing components. Background Technology

[0002] As a core component of high-end equipment, the performance of seals in complex temperature environments directly affects the operational stability of the equipment. Especially in scenarios such as aero engines, seals need to withstand harsh conditions such as differentiated temperatures in multiple regions and gradient temperature changes, which places high demands on temperature control testing technology.

[0003] In existing technologies, temperature control testing of sealing components often adopts an integrated temperature control or a simple zoned temperature control scheme, which achieves temperature control through a single heating source or a few zoned heating modules, relying on conventional temperature measurement feedback and basic PID adjustment algorithms.

[0004] As high-end equipment places increasing demands on the performance of sealing components, traditional testing systems are struggling to simulate the multi-segment gradient temperature field in actual operation and cannot accurately reproduce the temperature differences in different areas of the sealing components, thus hindering the accuracy and efficiency of sealing component performance testing.

[0005] The following problems currently exist: First, existing technologies are difficult to accurately construct and stably control multi-segment independent temperature fields. Coupling interference is easily generated between temperature zones, and they cannot flexibly adapt to the temperature zone division requirements of different sealing components, resulting in insufficient simulation accuracy of gradient temperature fields and extreme temperature zones. Secondly, the existing system lacks a deep linkage mechanism between temperature control, testing and adaptation. The temperature field control parameters and the performance test data of the seals are disconnected, making it impossible to dynamically optimize the temperature zone parameters and the structural design of the seals based on the test results, and making it difficult to support the accurate adaptation of the seals.

[0006] It is evident that traditional temperature control modules lack the ability to flexibly divide and coordinate temperature zones, have insufficient accuracy in heating execution and temperature feedback, and have not established a logical connection between test data, temperature control parameters, and adaptation design. This results in a disconnect between test scenarios and actual working conditions, and adaptation optimization lacks accurate data support, failing to meet the testing and R&D needs of high-end sealing components.

[0007] Therefore, there is an urgent need for a multi-section independent temperature control testing and adaptation system for seals to solve the above problems. Summary of the Invention

[0008] This invention proposes a multi-segment independent temperature control testing and adaptation system for sealing components.

[0009] A multi-segment independent temperature control testing and adaptation system for sealing components includes: a multi-segment independent temperature control module for setting temperature zone parameters and performing independent control according to the testing requirements of the sealing components; a multi-segment heating execution module; a temperature field feedback and correction module; and a sealing component testing and adaptation module. The multi-segment independent temperature control module and the multi-segment heating execution module are used to implement segmented heating according to the temperature zone parameters. The temperature field feedback and correction module is used to collect temperature data from each temperature zone and provide feedback correction. The sealing component testing and adaptation module is used to complete the performance testing and adaptation optimization of the sealing components based on a stable temperature field. All modules form a complete testing and adaptation system through data interaction and control linkage.

[0010] Preferably, the multi-segment independent temperature control module includes a flexible temperature zone division module, a single temperature zone independent control module, and a gradient temperature field coordination module. The flexible temperature zone division module is used to customize the number and range of temperature zones as needed and define the boundary parameters of the temperature zones. The single temperature zone independent control module is used to independently set the temperature of each temperature zone to achieve precise temperature control at a preset accuracy level. The gradient temperature field coordination module is used to control the gradient difference between temperature zones to ensure stable coordination of the overall temperature field.

[0011] Preferably, the multi-segment heating execution module includes a segmented heating module and a bonding and conduction module; the segmented heating module includes modular heating components that correspond one-to-one with the temperature zones; the bonding and conduction module is used to achieve adaptive bonding between the heating components and the surface of the sealing element, and to transfer heat through a high-efficiency heat conduction structure.

[0012] Preferably, the temperature field feedback and correction module includes a zone temperature measurement module and a correction module; the zone temperature measurement module collects temperature data through independent temperature measurement channels of each temperature zone and simultaneously monitors the temperature boundary of the temperature zone; the correction module is used to compare the measured temperature of each temperature zone with the target temperature and to perform accurate correction of a single temperature zone.

[0013] Preferably, the correction module quantifies the degree of temperature deviation in the temperature zone using a weighted deviation formula, specifically including: combining the secondary deviation weighting coefficient and the absolute deviation weighting coefficient to calculate the deviation evaluation value based on the difference between the measured temperature and the target temperature; when the deviation evaluation value exceeds a preset threshold, power correction is triggered through the single-temperature-zone independent control module, reducing the heating power for positive deviation and increasing the heating power for negative deviation.

[0014] Preferably, the sealing component testing and adaptation module includes a segment performance testing module and an adaptation optimization module; the segment performance testing module is used to detect the thermal deformation of the sealing component in each temperature zone and evaluate the overall sealing performance; the adaptation optimization module is used to fine-tune the temperature field parameters based on the test data and optimize the compatibility between the sealing component and the temperature field.

[0015] Preferably, the logic of the adaptation optimization module in adjusting the temperature zone boundary parameters includes: based on the requirement of uniform thermal deformation, calculating the temperature zone boundary fine-tuning amount through the thermal deformation difference, average linear expansion coefficient, average temperature difference, and initial boundary length of the temperature zones on both sides of the boundary; a positive fine-tuning amount indicates that the boundary shifts to one side of the temperature zone, and a negative fine-tuning amount indicates that it shifts to the other side of the temperature zone; at the same time, the target temperature value is corrected based on the overall sealing performance index so that the performance of each area of ​​the sealing component matches the temperature of the corresponding temperature zone.

[0016] Preferably, the multi-segment independent temperature control module and the multi-segment heating execution module form a temperature control and heating linkage mechanism, specifically including: the target temperature of a single temperature zone and the power of the heating component are correlated and controlled through a precise matching algorithm, and the number of temperature zones and the combination of heating components are adapted according to set parameters; the precise matching algorithm is based on the principle of heat conduction balance and dynamic heat loss compensation, and calculates the heating power through parameters such as thermal conductivity, heat transfer area, the difference between the target temperature and the ambient temperature, heat loss correction coefficient and heating efficiency.

[0017] Preferably, the temperature field feedback and correction module and the multi-segment independent temperature control module form a feedback and correction mechanism, specifically including: real-time transmission of measured data of a single temperature zone to the single temperature zone independent control module for correcting temperature control parameters; temperature zone boundary deviation is collaboratively corrected through the gradient temperature field collaborative module, and the boundary temperature zone correction value is calculated by combining the basic deviation correction term and the weighted average coupling correction term of adjacent temperature zones.

[0018] Preferably, the sealing component testing and adaptation module and the multi-segment independent temperature control module form a testing and temperature control adaptation mechanism, specifically including: the test requirements are dynamically adjusted by the temperature zone flexible division module to adjust the temperature zone parameters, and the performance test data is transmitted to the single-temperature zone independent control module to optimize the temperature control accuracy; the correlation between thermal deformation detection data and temperature field parameters is based on the basic principle of thermal expansion, and a correlation model is constructed by combining the time accumulation effect of temperature change, thermal response hysteresis characteristics and the influence of nonlinear thermal expansion at high temperature.

[0019] The present invention has the following beneficial effects: This invention effectively suppresses temperature zone coupling interference through flexible temperature zone division, independent control of single temperature zones, and the synergistic effect of gradient coordination modules. It can customize the temperature zone distribution according to the sealing structure and test requirements, accurately reproduce complex working conditions such as gradient temperature and extreme temperature, improve the realism of the test scenario, and achieve precise control and flexible adaptation of multi-segment temperature fields. This invention achieves dynamic optimization of temperature zone parameters and precise adjustment of seal adaptation design by deeply correlating temperature field feedback correction with seal performance test data. This allows test data to directly feed back into the adaptation optimization process, improving the accuracy of seal performance evaluation and structural design. This invention simplifies the testing process under complex working conditions through modular design and collaborative control mechanisms, enabling rapid adaptation to the testing requirements of different types of seals, reducing testing and R&D costs, providing efficient technical support for the industrialization of high-end seals, and improving the integrated efficiency of seal testing and adaptation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a multi-section independent temperature control testing and adaptation system for sealing components according to the present invention; Figure 2 This is a schematic diagram illustrating the calculated heating power for each temperature zone of a multi-segment independent temperature control testing and adaptation system for sealing components according to the present invention. Figure 3 This is a schematic diagram of the heating efficiency distribution of each temperature zone in a multi-segment independent temperature control testing and adaptation system for a sealing component according to the present invention. Figure 4 This is a schematic diagram illustrating the relationship between the set temperature and heating power of a multi-segment independent temperature control testing and adaptation system for sealing components according to the present invention. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly described below in conjunction with the examples.

[0022] Example 1 like Figure 1 As shown, this invention proposes a multi-segment independent temperature control testing and adaptation system for sealing components. Specifically, this system includes the following modules: a multi-segment independent temperature control module, a multi-segment heating execution module, a temperature field feedback and correction module, and a sealing component testing and adaptation module. The multi-segment independent temperature control module is used to set temperature zone parameters and perform independent control according to the sealing component testing requirements. The multi-segment heating execution module is used to implement segmented heating according to the temperature zone parameters. The temperature field feedback and correction module is used to collect temperature data from each temperature zone and provide feedback correction. The sealing component testing and adaptation module is used to complete sealing component performance testing and adaptation optimization based on a stable temperature field.

[0023] The multi-segment independent temperature control module also includes a flexible temperature zone division module, a single temperature zone independent control module, and a gradient temperature field coordination module. Specifically, the flexible temperature zone division module is used to customize the number and range of temperature zones as needed and define the boundary parameters of the temperature zones; the single temperature zone independent control module is used to independently set the temperature of each temperature zone to achieve precise temperature control at the ±0.5℃ level; and the gradient temperature field coordination module is used to control the gradient difference between temperature zones to ensure the overall temperature field is stable and coordinated.

[0024] The flexible temperature zone division module receives the structural dimensions of the seal and the test area distribution requirements, and uses a region segmentation algorithm to determine the number of temperature zones. This algorithm is based on the curvature change rate of the seal surface and the test accuracy requirements. When the curvature change rate exceeds a set threshold, the number of temperature zones is automatically increased to ensure that the structural characteristics of the seal are consistent within each temperature zone. The temperature zone boundary parameters are defined by coordinate positioning. A three-dimensional coordinate system is established with the center point of the seal surface as the origin. The boundary of each temperature zone is clearly divided by the coordinate interval, forming a non-overlapping and fully covered temperature zone distribution.

[0025] The single-zone independent control module has a built-in temperature control chip. By receiving the temperature zone coordinate information and the set target temperature from the flexible temperature zone division module, it generates independent temperature control commands for each zone. The temperature control accuracy is achieved through a PID algorithm. The proportional, integral, and derivative coefficients of the PID algorithm are adaptively adjusted according to the temperature zone location and the characteristics of the sealing material, ensuring a temperature control accuracy of ±0.5℃ under different temperature zone conditions. The gradient temperature field coordination module obtains the set target temperature for each zone and calculates the temperature difference between adjacent zones. When the difference exceeds the set range, it sends a coordination adjustment command to the single-zone independent control module to correct the target temperature of adjacent zones, so that the overall temperature field forms a continuous and stable gradient distribution.

[0026] The multi-segment heating execution module also includes a segmented heating module and a bonding and conduction module. Specifically, the segmented heating module contains modular heating components that correspond one-to-one with the temperature zones, and the power of each heating component is independently adjustable. The bonding and conduction module is used to achieve adaptive bonding between the heating components and the surface of the sealing element, and to transfer heat through a high-efficiency heat conduction structure.

[0027] Each modular heating component of the segmented heating module is equipped with an independent power adjustment unit. The power adjustment unit is electrically connected to the single-temperature-zone independent control module and receives the power control command output by the single-temperature-zone independent control module to achieve continuous adjustment of heating power. The shape of the modular heating component matches the surface contour of the sealing element of the corresponding temperature zone. The structural model of the heating component is generated based on the coordinate information of the temperature zone boundary using three-dimensional modeling technology to ensure that the contact area between the heating component and the sealing element surface is maximized.

[0028] The bonding and conduction module is made of a flexible thermally conductive material with good deformation capacity and thermal conductivity. It can adapt to the curved shape of the sealing surface, so that the heating component and the sealing surface are tightly bonded. The high-efficiency heat conduction structure includes a thermally conductive coating and a heat dissipation suppression layer. The thermally conductive coating is applied to the contact surface between the heating component and the sealing component to reduce the contact thermal resistance. The heat dissipation suppression layer is wrapped around the outside of the heating component to reduce the loss of heat to the environment and improve heating efficiency.

[0029] The temperature field feedback and correction module also includes a zone temperature measurement module and a correction module. Specifically, the zone temperature measurement module collects temperature data through independent temperature measurement channels in each temperature zone and monitors the boundary temperature of the temperature zone simultaneously; the correction module is used to compare the measured temperature of each temperature zone with the target temperature and to perform accurate correction on a single temperature zone.

[0030] The segmented temperature measurement module features an independent temperature measurement channel for each temperature zone equipped with an infrared temperature sensor. The installation position of the infrared temperature sensor corresponds to the coordinates of the temperature zone. Each temperature zone is equipped with at least two infrared temperature sensors, installed at the center and boundary of the zone respectively, to ensure comprehensive acquisition of temperature data within the zone. The measurement wavelength of the infrared temperature sensor is selected based on the characteristics of the sealing material. The measurement wavelength is adjusted for different sealing materials to improve the accuracy of temperature measurement. The temperature zone boundary temperature is acquired by an infrared temperature sensor installed at the boundary coordinates of the temperature zone, simultaneously obtaining temperature data at the boundaries of two adjacent temperature zones, providing a basis for temperature field collaborative correction.

[0031] The calibration module receives measured temperature data from each temperature zone from the segmented temperature measurement module, compares it with the target temperature set by the single-zone independent control module, calculates the temperature deviation, and generates a calibration command when the deviation exceeds a set threshold. This command is then sent to the single-zone independent control module to correct the temperature control parameters and achieve precise temperature calibration. Simultaneously, the calibration module also receives temperature difference information from adjacent temperature zones from the gradient temperature field coordination module. When the boundary temperature deviation affects the gradient distribution, a feedback signal is sent to the gradient temperature field coordination module to trigger coordinated calibration of the overall temperature field.

[0032] The sealing component testing and adaptation module also includes a segment performance testing module and an adaptation optimization module. Specifically, the segment performance testing module is used to detect the thermal deformation of the sealing component in each temperature zone and evaluate the overall sealing performance; the adaptation optimization module is used to fine-tune the temperature field parameters based on the test data and optimize the compatibility between the sealing component and the temperature field.

[0033] The segmented performance testing module is equipped with laser displacement sensors, which are aligned with the temperature zone coordinate information output by the flexible temperature zone division module. Each temperature zone is equipped with at least three laser displacement sensors to measure the displacement changes of the sealing surface at different positions within the temperature zone, and calculate the thermal deformation through the displacement changes. The overall sealing performance is evaluated through a sealing pressure sensor and a leakage rate detection device. The sealing pressure sensor is installed at the sealing interface of the sealing component to measure the pressure distribution at the sealing interface. The leakage rate detection device evaluates the overall sealing performance by injecting test gas into the sealing cavity and detecting the amount of gas leakage.

[0034] The adaptation and optimization module receives thermal deformation data and overall sealing performance indicators output by the segment performance testing module. When the thermal deformation exceeds the allowable range or the sealing performance fails to meet the standard, it sends a temperature field parameter adjustment command to the temperature zone flexible division module to fine-tune the number of temperature zones, boundary parameters, or target temperature. At the same time, the adaptation and optimization module also generates sealing structure optimization suggestions to provide data support for the design improvement of the sealing component.

[0035] The multi-segment independent temperature control module and the multi-segment heating execution module form a temperature control-heating linkage mechanism. The target temperature of a single temperature zone and the power of the heating component are correlated and controlled through a precise matching algorithm. The number of temperature zones and the combination of heating components are adapted according to set parameters. Among them, the power matching algorithm is based on the principle of heat conduction balance and dynamic heat loss compensation, and the specific formula is as follows:

[0036] Based on the fundamental formula of heat conduction ,in, To conduct heat, Thermal conductivity, For heat transfer area, For temperature difference, Defined by time, combined with heating power. The formula for the fundamental power is derived. , To improve heating efficiency, and considering the nonlinear increase in heat loss under extreme temperature differences, a temperature difference correction coefficient is introduced. Construct dynamic compensation items When adapting to this system, for the first... Each temperature zone has its own defined parameters: For the first Heating power of each temperature zone, unit: W. Temperature zone The thermal conductivity, ranging from 10 to 500 W / (m·K), is determined by the material of the sealing component and the characteristics of the heating element. Temperature zone The heat transfer area, in m², is determined by the contact area between the heating element and the sealing element. Temperature zone The set target temperature, in °C. The test environment temperature is measured in real-time, in degrees Celsius (°C). Temperature zone The heat loss correction factor ranges from 0.001 to 0.01. The larger the temperature difference, the larger the value. Temperature zone The heating efficiency ranges from 0.7 to 0.95, and is determined by the type of heating component.

[0037] The specific implementation process of the temperature control-heating linkage mechanism is as follows: After the flexible temperature zone division module outputs the number of temperature zones and the coordinate information of each temperature zone, the segmented heating module combines corresponding modular heating components according to the number of temperature zones, and each modular heating component establishes a one-to-one correspondence with the corresponding temperature zone; the single-temperature-zone independent control module sets the temperature zone according to the test requirements. and obtain the test environment Combined with pre-stored temperature zones , , , The parameters are used to calculate the target power of each modular heating component using the power matching formula described above. The single-temperature zone independent control module will control the target power. The signal is converted into a power control command and sent to the power adjustment unit of the corresponding modular heating component. The power adjustment unit adjusts the heating power according to the command to achieve a precise match between the target temperature of a single temperature zone and the heating power. When the number of temperature zones is adjusted by the flexible temperature zone division module, the segmented heating module synchronously adjusts the combination method of the modular heating components to ensure that the number of heating components and the number of temperature zones are always consistent, thereby achieving dynamic adaptation between the number of temperature zones and the combination of heating components.

[0038] The temperature field feedback and correction module and the multi-segment independent temperature control module form a feedback-correction mechanism. Real-time measured data for a single temperature zone is transmitted to the single-temperature-zone independent control module to correct the temperature control parameters. Temperature zone boundary deviations are collaboratively corrected through the gradient temperature field coordination module, with the correction formula as follows:

[0039] Based on the principle of deviation compensation and combined with the derivation of the characteristics of the boundary temperature zone being affected by the coupling effect of adjacent temperature zones, the basic deviation correction term is first constructed. Introducing adjacent temperature zone weighting factors Constructing a weighted average coupling correction term The final formula for boundary temperature zone correction values ​​is formed. Explanation of each parameter: For the first Temperature correction values ​​for each boundary temperature zone, in °C. For the first The basic correction factor for each boundary temperature zone ranges from 0.8 to 1.2 and is adjusted according to the temperature control accuracy requirements of each zone. Boundary temperature zone Measured temperature, unit: °C Boundary temperature zone Target temperature, unit: °C For the first The adjacent influence correction coefficient for each boundary temperature zone ranges from 0.3 to 0.6. For the first The set of adjacent temperature zones of a boundary temperature zone Adjacent temperature zones Measured temperature, unit: °C For the first Each boundary temperature zone and adjacent temperature zones The weighting factor ranges from 0.1 to 1.0, with greater weighting for adjacent temperature zones that are closer together.

[0040] The specific implementation process of this feedback-correction mechanism is as follows: the infrared temperature sensor of the segmented temperature measurement module collects data on the temperature of each temperature zone in real time. Among them, the boundary temperature zone of Synchronously transmitted to the correction module and the gradient temperature field coordination module; the correction module will The settings of the single-temperature zone independent control module Compare and calculate the baseline deviation. Simultaneously obtain the boundary temperature range adjacent temperature range set and each adjacent temperature zone Based on adjacent temperature zones and boundary temperature zones Distance calculation weight factor The closer the distance The larger the value, the higher the boundary temperature range can be calculated using the above correction formula. correction value The correction value is then sent to the single-temperature-zone independent control module; the single-temperature-zone independent control module, according to... Correcting the boundary temperature zone The temperature control parameters are adjusted, and the power control commands output to the segmented heating modules are sent to achieve precise calibration of a single temperature zone; the gradient temperature field coordination module receives boundary temperature zone parameters. With adjacent temperature zones The system calculates the temperature difference between adjacent temperature zones based on the data. When the difference exceeds a set range, it sends a coordinated adjustment command to the independent temperature zone control module to correct the temperature difference between adjacent zones. This ensures that the temperature gradient at the boundary of the temperature zone remains continuous and stable.

[0041] The sealing component testing and adaptation module and the multi-segment independent temperature control module form a test-temperature control adaptation mechanism. Test requirements are dynamically adjusted by the temperature zone flexible division module, and performance test data is transmitted to the single-temperature-zone independent control module to optimize temperature control accuracy. The correlation model between thermal deformation detection data and temperature field parameters is as follows:

[0042] Based on the fundamental principle of thermal expansion , This is the amount of thermal deformation. The coefficient of linear expansion is 1 / 3. For the initial length, Let be the temperature change; considering the cumulative effect of temperature change over time, Extended to a time function An integral term is introduced to characterize the cumulative thermal deformation; an exponential decay factor is added in conjunction with the thermal response hysteresis characteristics. Considering the effect of nonlinear thermal expansion at high temperatures, a quadratic term is added. When adapting to this system, for the first... Temperature zone definition: For the first Each temperature zone in time Thermal deformation during operation, unit: m. Temperature zone The coefficient of linear expansion, range of values / K is determined by the material of the seal. Temperature zone The initial length of the corresponding sealing area, in meters. For the first Each temperature zone in time Measured temperature at the time, unit: °C Initial temperature, in °C. For time variables, the unit is seconds. Temperature zone The thermal response time constant, with a value ranging from 10 to 100 s, is a natural constant, with a value of approximately 2.718. Temperature zone The nonlinear expansion coefficient, with a range of values. , The duration of the test is in seconds (s).

[0043] The specific implementation process of this test-temperature control adaptation mechanism is as follows: Test requirements are transmitted to the flexible temperature zone division module via input devices. These requirements include the operating temperature range of the seals, gradient temperature requirements, and performance test indicators. The flexible temperature zone division module adjusts the number, range, and boundary parameters of temperature zones based on these requirements to generate a temperature zone configuration scheme that adapts to the test requirements. The laser displacement sensor of the segmented performance test module collects the displacement data of the seals in each temperature zone in real time, combining it with the output of the segmented temperature measurement module. The thermal deformation amount in each temperature zone was calculated using the aforementioned thermal deformation correlation model. The laser displacement sensor's acquisition frequency is consistent with the temperature acquisition frequency of the segmented temperature measurement module to ensure time synchronization between displacement and temperature data; the segmented performance testing module will measure thermal deformation. Compared with the preset allowed value, when When the allowable value is exceeded, an optimization signal is sent to the adaptation and optimization module. After receiving the thermal deformation data, the adaptation and optimization module analyzes the cause of the deviation. If the deviation is caused by an unreasonable temperature distribution in the temperature zone, a temperature zone parameter adjustment command is sent to the temperature zone flexible division module to correct the temperature zone boundary or target temperature. If the deviation is caused by insufficient temperature control accuracy, a parameter optimization command is sent to the single temperature zone independent control module to adjust the proportional coefficient, integral coefficient, and derivative coefficient of the PID algorithm to improve the temperature control accuracy. The overall sealing performance index is obtained through the sealing pressure sensor and leakage rate detection device. When the sealing pressure distribution is uneven or the leakage rate exceeds the set value, the adaptation and optimization module also triggers the adjustment of temperature zone parameters or temperature control parameters to ensure that the performance of the sealing component meets the standards.

[0044] The real-time temperature data of each temperature zone collected by the segmented temperature measurement module is transmitted to the correction module. Based on the deviation between the measured temperature and the target temperature, the correction module generates a power adjustment command and sends it to the segmented heating module to adjust the power output of the corresponding heating component. The deviation calculation uses a weighted deviation formula:

[0045] Used to quantify the Temperature deviation in each temperature zone, and explanation of each parameter: For the first Temperature deviation assessment value for each temperature zone, unit: , This is the weighting coefficient for the second-order deviation, with a value ranging from 0.01 to 0.1. , This is the absolute deviation weighting coefficient, with a value ranging from 1 to 5. , For the first Measured temperatures for each temperature zone, unit: °C For the first Target temperature for each temperature zone, unit: °C. If the value exceeds the set threshold, the range is 0.5 to 2.0. At that time, power correction is triggered through the single-temperature zone independent control module.

[0046] The power correction process is specifically implemented as follows: the segmented temperature measurement module collects the data... The data is transmitted in real time to the calibration module, which then obtains the settings set by the single-temperature-zone independent control module. Substitute into the above weighted deviation formula to calculate ; and The value is determined based on the temperature range of the temperature zone, with high-temperature zones being the most important. Larger values ​​are used to suppress large deviations, especially in low-temperature regions. The value is set to a relatively large value to ensure basic temperature control accuracy; the calibration module is preset. The threshold range, when calculated When within the threshold range, maintain the current power output; when When the threshold is exceeded, the correction module adjusts according to... The magnitude and positive / negative power generation adjustment amount, positive deviation, Reduce heating power at the same time, negative deviation. Increase heating power; the power adjustment amount is calculated proportionally, and the adjustment amount is proportional to... The power is directly proportional to the temperature zone, and the proportionality coefficient is determined based on the heating characteristics of the temperature zone. The correction module converts the power adjustment amount into a power adjustment command and sends it to the power adjustment unit of the modular heating component corresponding to the segmented heating module. The power adjustment unit adjusts the heating power according to the command until... It drops to within the threshold range.

[0047] The adaptation and optimization module acquires the thermal deformation data and overall sealing performance indicators from the segmented performance testing module, fine-tunes the temperature zone boundary parameters through the flexible temperature zone division module, and corrects the target temperature value through the independent single temperature zone control module, so that the performance of each area of ​​the seal matches the corresponding temperature zone; wherein the temperature zone boundary fine-tuning amount The calculation is based on the requirement of uniformity of thermal deformation, and the formula is:

[0048] Based on the principle of uniform thermal deformation, the difference in thermal deformation between the temperature zones on both sides of the boundary needs to be offset by boundary fine-tuning; according to the thermal expansion formula... Deformation Define boundaries Average linear expansion coefficient of both temperature zones Average temperature difference Explanation of each parameter: For the first Fine-tuning amount for the boundary of each temperature zone, in meters. Temperature zone In time Thermal deformation at time, unit: m, by The formula is used to calculate, Temperature zone In time Thermal deformation during operation, unit: m. For the boundary The average linear expansion coefficient of the two temperature zones, in units of / K. Temperature zone The coefficient of linear expansion, in units of / K. Temperature zone The coefficient of linear expansion, in units of / K. For the boundary The average temperature difference between the two temperature zones, in °C. Temperature zone Target temperature, unit: °C Temperature zone Target temperature, unit: °C Initial temperature, in °C. For the boundary The initial length, in meters. A positive value indicates the boundary extends into the temperature range. Offset, negative indicates to the temperature range Offset.

[0049] The specific implementation process of this temperature zone boundary fine-tuning and target temperature correction is as follows: the adaptation optimization module receives the output from the partition performance test module. and Obtain the boundary of Temperature zone and of , and , Calculations yielded and Substituting into the above boundary fine-tuning formula, we can calculate the result. ;according to The positive and negative signs and magnitudes are considered, and the adaptation optimization module sends boundary adjustment commands to the temperature zone flexible division module to adjust the boundaries. The coordinate range allows for fine-tuning of the temperature zone boundaries; when hour, Positive, boundary towards the temperature range Offset, increase temperature range The range makes the temperature zone The thermal deformation is uniformly distributed; when hour, Negative, boundary towards the temperature range Offset, increase temperature range The temperature zone range is adjusted; after the temperature zone boundary is adjusted, the segmented heating module synchronously adjusts the structure of the corresponding modular heating component to ensure that the heating component matches the adjusted temperature zone boundary; the target temperature correction is achieved by the adaptation optimization module analyzing the overall sealing performance index. When the sealing pressure sensor detects insufficient sealing pressure in a certain area, it indicates that the temperature of the corresponding temperature zone may not meet the design requirements. The adaptation optimization module calculates the temperature correction amount for that area and sends a target temperature adjustment command to the single-temperature-zone independent control module to improve the temperature of that area. This ensures that the thermal deformation of the seal in this area meets the design requirements, thereby enhancing the sealing performance. The target temperature correction is calculated based on the degree of insufficient sealing pressure. Sealing pressure and temperature are positively correlated. By using a pre-established sealing pressure-temperature correlation curve, the target temperature value that meets the sealing pressure requirements is found.

[0050] The multi-segment independent temperature control testing and adaptation system for seals in this embodiment achieves precise control of the independent temperature field of multiple segments of the seals, comprehensive testing and adaptation optimization of seal performance through the organic collaboration between various modules. The data transmission and control interaction between the modules form a complete system, ensuring that the system can operate stably and reliably, and providing accurate test data support for the research and development and production of seals.

[0051] Example 2 The multi-segment independent temperature control testing and adaptation system for seals in this embodiment specifically includes the following modules: a multi-segment independent temperature control module, a multi-segment heating execution module, a temperature field feedback and correction module, and a seal testing and adaptation module. The multi-segment independent temperature control module is used to set temperature zone parameters and perform independent control according to the seal testing requirements. The multi-segment heating execution module is used to implement segmented heating according to the temperature zone parameters. The temperature field feedback and correction module is used to collect temperature data of each temperature zone and provide feedback correction. The seal testing and adaptation module is used to complete seal performance testing and adaptation optimization based on a stable temperature field.

[0052] The multi-segment independent temperature control module also includes a flexible temperature zone division module, a single temperature zone independent control module, and a gradient temperature field coordination module. Specifically, the flexible temperature zone division module is used to customize the number and range of temperature zones as needed and define the boundary parameters of the temperature zones; the single temperature zone independent control module is used to independently set the temperature of each temperature zone to achieve precise temperature control at the ±0.5℃ level; and the gradient temperature field coordination module is used to control the gradient difference between temperature zones to ensure the overall temperature field is stable and coordinated.

[0053] This embodiment is applied to the testing scenario of high-pressure seals for aero-engines. The working environment of high-pressure seals for aero-engines is characterized by large temperature gradients, high local temperatures, and strict sealing performance requirements. Therefore, the flexible temperature zone division module divides the seal into 5 independent temperature zones according to the structural characteristics of the high-pressure seal, corresponding to the inlet end, intermediate section, exhaust end, and two transition sections of the seal. The temperature zone range is determined according to the temperature distribution of each area during actual operation of the aero-engine. The set temperature range for the inlet end temperature zone is 200℃~300℃, the intermediate section temperature zone is 500℃~600℃, the exhaust end temperature zone is 800℃~900℃, and the transition section temperature zones are 300℃~500℃ and 600℃~800℃, respectively. The temperature zone boundary parameters are determined by the structural dimensions of the seal. Based on the axial length of the seal, the inlet end temperature zone occupies 1 / 5 of the axial length, each transition section temperature zone occupies 1 / 5, the intermediate section temperature zone occupies 1 / 5, and the exhaust end temperature zone occupies 1 / 5, forming a uniform axial temperature zone distribution.

[0054] The single-temperature-zone independent control module presets corresponding PID algorithm parameters for the temperature range of each zone. For example, the proportional coefficient of the high-temperature zone at the exhaust end and the middle section is set to a larger value to improve the temperature response speed, while the integral coefficient of the low-temperature zone at the intake end is set to a larger value to eliminate static deviation. The temperature control chip generates temperature control commands for each zone, and the temperature control commands are transmitted to the multi-zone heating execution module through the bus to realize independent temperature control of each zone.

[0055] The gradient temperature field coordination module monitors the temperature difference between adjacent temperature zones in real time. The preset temperature difference between the transition zone and the adjacent temperature zone is 200℃. When the difference deviates from the preset value by more than ±10℃, a coordination adjustment command is sent to the single temperature zone independent control module to correct the target temperature of the adjacent temperature zone and ensure the stability of the temperature gradient.

[0056] The multi-segment heating execution module also includes a segmented heating module and a bonding and conduction module. Specifically, the segmented heating module contains modular heating components that correspond one-to-one with the temperature zones, and the power of each heating component is independently adjustable. The bonding and conduction module is used to achieve adaptive bonding between the heating components and the surface of the sealing element, and to transfer heat through a high-efficiency heat conduction structure.

[0057] To meet the high-temperature operating requirements of high-pressure seals in aero-engines, the modular heating components of the segmented heating module are made of high-temperature resistant alloy materials, enabling stable operation in high-temperature environments above 1000℃. Each modular heating component has a power adjustment range of 0~1000W, achieved through a silicon controlled rectifier (SCR) power regulator. The SCR power regulator is electrically connected to the single-temperature-zone independent control module, receiving temperature control commands and converting them into power adjustment signals. The structure of the modular heating components is designed according to the surface shape of the seals in the corresponding temperature zone, employing an arc-shaped structure that fits tightly against the cylindrical surface of the seals. The length of each heating component is consistent with the axial length of the corresponding temperature zone, ensuring heating uniformity.

[0058] The flexible thermally conductive material of the bonding and conductive module is made of graphite fiber composite material. This material has good flexibility and thermal conductivity in high-temperature environments and can adapt to the small deformation of the sealing surface. The thermally conductive coating is made of aluminum nitride ceramic coating. The thermal conductivity of this coating is 170W / (m·K), which can effectively reduce contact thermal resistance. The heat dissipation suppression layer is made of aluminum silicate fiber material. This material has a low thermal conductivity and can effectively reduce heat loss, so that the heating efficiency of the exhaust end temperature zone can reach more than 90%.

[0059] The temperature field feedback and correction module also includes a zone temperature measurement module and a correction module. Specifically, the zone temperature measurement module collects temperature data through independent temperature measurement channels in each temperature zone and monitors the boundary temperature of the temperature zone simultaneously; the correction module is used to compare the measured temperature of each temperature zone with the target temperature and to perform accurate correction on a single temperature zone.

[0060] In this embodiment, the infrared temperature sensor of the segmented temperature measurement module adopts a mid-infrared band sensor with a measurement range of 0~1200℃ and a measurement accuracy of ±0.3℃, which can meet the high-temperature measurement requirements of high-pressure seals in aero-engines. Each temperature zone is equipped with three infrared temperature sensors, which are installed at the front, middle, and rear ends of the temperature zone respectively, to collect temperature data at each location, and the average value is taken as the measured temperature of that temperature zone. The temperature at the boundary of the temperature zone is collected by infrared temperature sensors installed at both ends of the transition zone, and temperature data at the boundary of adjacent temperature zones is acquired simultaneously, providing a basis for the coordinated correction of the gradient temperature field.

[0061] The calibration module has a built-in data processing chip that receives temperature data from the segmented temperature measurement module in real time, and compares it with the target temperature set by the single-temperature-zone independent control module. The temperature deviation is calculated by comparison. In view of the high precision requirements of the high-pressure seals of aero-engines, the temperature deviation threshold is set to ±0.5℃. When the deviation exceeds the threshold, a correction command is generated and sent to the single-temperature zone independent control module to correct the temperature control parameters. At the same time, the correction module also transmits the boundary temperature data to the gradient temperature field coordination module. When the boundary temperature deviation affects the gradient distribution, the overall temperature field coordination correction is triggered.

[0062] The sealing component testing and adaptation module also includes a segment performance testing module and an adaptation optimization module. Specifically, the segment performance testing module is used to detect the thermal deformation of the sealing component in each temperature zone and evaluate the overall sealing performance; the adaptation optimization module is used to fine-tune the temperature field parameters based on the test data and optimize the compatibility between the sealing component and the temperature field.

[0063] In this embodiment, the laser displacement sensor of the segmented performance testing module is a high-precision laser interferometric displacement sensor with a measurement range of 0~500μm and a measurement accuracy of ±0.1μm, capable of accurately detecting minute thermal deformations of the seal. The laser displacement sensor is installed radially on the outer side of the seal, with two sensors configured for each temperature zone to measure the radial thermal deformation of the seal. Overall sealing performance evaluation is achieved through a sealing pressure sensor and a helium leakage rate detection device. The sealing pressure sensor is a miniature pressure sensor installed within the sealing groove of the seal, with a measurement range of 0~10MPa and a measurement accuracy of ±0.01MPa, used to detect the pressure distribution at the sealing interface. The helium leakage rate detection device injects 99.99% pure helium into the sealed cavity, uses a mass spectrometer to detect the leakage helium concentration, and calculates the leakage rate, with a detection accuracy of 1× Pa·m³ / s.

[0064] Based on the performance requirements of high-pressure seals for aero-engines, the adaptation and optimization module presets a thermal deformation allowable value of ±50μm, a sealing pressure allowable range of 5~8MPa, and a helium leakage rate allowable value of ≤1× Pa·m³ / s; When the test data exceeds the preset range, the adaptation and optimization module automatically triggers the adjustment of temperature field parameters or temperature control parameters.

[0065] The multi-segment independent temperature control module and the multi-segment heating execution module form a temperature control-heating linkage mechanism. The target temperature of a single temperature zone and the power of the heating component are correlated and controlled through a precise matching algorithm. The number of temperature zones and the combination of heating components are adapted according to set parameters. Among them, the power matching algorithm is based on the principle of heat conduction balance and dynamic heat loss compensation, and the specific formula is as follows:

[0066] Based on the fundamental formula of heat conduction , To conduct heat, Thermal conductivity, For heat transfer area, For temperature difference, Defined by time, combined with heating power. The formula for the fundamental power is derived. , To improve heating efficiency, and considering the nonlinear increase in heat loss under extreme temperature differences, a temperature difference correction coefficient is introduced. Construct dynamic compensation items When adapting to this system, for the first... Each temperature zone has its own defined parameters: For the first Heating power of each temperature zone, unit: W. Temperature zone The thermal conductivity, ranging from 10 to 500 W / (m·K), is determined by the material of the sealing component and the characteristics of the heating element. Temperature zone The heat transfer area, in m², is determined by the contact area between the heating element and the sealing element. Temperature zone The set target temperature, in °C. The test environment temperature is measured in real-time, in degrees Celsius (°C). Temperature zone The heat loss correction factor ranges from 0.001 to 0.01. The larger the temperature difference, the larger the value. Temperature zone The heating efficiency ranges from 0.7 to 0.95, and is determined by the type of heating component.

[0067] In this embodiment, the parameters for each temperature zone are set as follows: Inlet temperature zone (temperature zone 1) The sealing material is a high-temperature alloy with a thermal conductivity of 150 W / (m·K). The contact area between the heating element and the seal. Test ambient temperature Low-temperature heat loss correction factor heating efficiency ; transition zone 1 (temperature zone 2) , , , , ; the middle temperature zone (temperature zone 3) , , , , ; transition zone 2 (temperature zone 4) , , , , ;Exhaust end temperature zone (temperature zone 5) , , , , .

[0068] Calculate the heating power for each temperature zone based on the above parameters: Temperature Zone 1:

[0069] Temperature Zone 2:

[0070] Temperature Zone 3:

[0071] Temperature zone 4:

[0072] Temperature Zone 5:

[0073] The single-temperature-zone independent control module converts the calculated target power for each temperature zone into power control commands, which are then sent to the corresponding thyristor power regulator of the modular heating component. The thyristor power regulator adjusts the heating power according to the commands to achieve precise heating of each temperature zone; when the test ambient temperature... When changes occur, the segmented temperature measurement module collects data in real time. The data is then transmitted to the single-temperature-zone independent control module, which recalculates the target power for each temperature zone. Adjust the power control command to ensure that the heating power is adapted to changes in ambient temperature.

[0074] Experimental results are as follows Figure 2 , Figure 3 , Figure 4 As shown.

[0075]

[0076] The temperature field feedback and correction module and the multi-segment independent temperature control module form a feedback-correction mechanism. Real-time measured data for a single temperature zone is transmitted to the single-temperature-zone independent control module to correct the temperature control parameters. Temperature zone boundary deviations are collaboratively corrected through the gradient temperature field coordination module, with the correction formula as follows:

[0077] Based on the principle of deviation compensation and combined with the derivation of the characteristics of the boundary temperature zone being affected by the coupling effect of adjacent temperature zones, the basic deviation correction term is first constructed. Introducing adjacent temperature zone weighting factors Constructing a weighted average coupling correction term The final formula for boundary temperature zone correction values ​​is formed. Explanation of each parameter: For the first Temperature correction values ​​for each boundary temperature zone, in °C. For the first The basic correction factor for each boundary temperature zone ranges from 0.8 to 1.2 and is adjusted according to the temperature control accuracy requirements of each zone. Boundary temperature zone Measured temperature, unit: °C Boundary temperature zone Target temperature, unit: °C For the first The adjacent influence correction coefficient for each boundary temperature zone ranges from 0.3 to 0.6. For the first The set of adjacent temperature zones of a boundary temperature zone Adjacent temperature zones Measured temperature, unit: °C For the first Each boundary temperature zone and adjacent temperature zones The weighting factor ranges from 0.1 to 1.0, with greater weighting for adjacent temperature zones that are closer together.

[0078] In this embodiment, the boundary temperature zones are transition zone 1 (temperature zone 2) and transition zone 2 (temperature zone 4). The adjacent temperature zones of temperature zone 2 are temperature zone 1 and temperature zone 3, and the adjacent temperature zones of temperature zone 4 are temperature zone 3 and temperature zone 5. The parameter settings for each boundary temperature zone are as follows: Temperature zone 2... , adjacent temperature zone weighting factor Temperature zone 1 and temperature zone 2 are relatively close. Temperature zone 3 is far from temperature zone 2; temperature zone 4 is... , adjacent temperature zone weighting factor Temperature zone 3 and temperature zone 4 are far apart. Temperature zone 5 is relatively close to temperature zone 4.

[0079] Assuming that during the test, temperature zone 2... , Temperature zone 1 Temperature zone 3 The correction value for temperature zone 2 is calculated as follows:

[0080]

[0081]

[0082] The correction module will The signal is sent to the single-temperature-zone independent control module, which corrects the target temperature of temperature zone 2 to... And recalculate the heating power of temperature zone 2. The power control command is adjusted to bring the measured temperature of temperature zone 2 closer to the corrected target temperature; simultaneously, the gradient temperature field coordination module calculates the temperature difference between temperature zone 2 and temperature zone 1 as... If the temperature difference deviates significantly from the preset difference of 200℃, a coordinated adjustment command is sent to the single-temperature-zone independent control module to appropriately increase the target temperature of temperature zone 1 and decrease the target temperature of temperature zone 3, so that the temperature difference tends to stabilize.

[0083] The sealing component testing and adaptation module and the multi-segment independent temperature control module form a test-temperature control adaptation mechanism. Test requirements are dynamically adjusted by the temperature zone flexible division module, and performance test data is transmitted to the single-temperature-zone independent control module to optimize temperature control accuracy. The correlation model between thermal deformation detection data and temperature field parameters is as follows:

[0084] Based on the fundamental principle of thermal expansion , This is the amount of thermal deformation. The coefficient of linear expansion is 1 / 3. For the initial length, Let be the temperature change; considering the cumulative effect of temperature change over time, Extended to a time function An integral term is introduced to characterize the cumulative thermal deformation; an exponential decay factor is added in conjunction with the thermal response hysteresis characteristics. Considering the effect of nonlinear thermal expansion at high temperatures, a quadratic term is added. When adapting to this system, for the first... Temperature zone definition: For the first Each temperature zone in time Thermal deformation during operation, unit: m. Temperature zone The coefficient of linear expansion, range of values / K is determined by the material of the seal. Temperature zone The initial length of the corresponding sealing area, in meters. For the first Each temperature zone in time Measured temperature at the time, unit: °C Initial temperature, in °C. For time variables, the unit is seconds. Temperature zone The thermal response time constant, with a value ranging from 10 to 100 s, is a natural constant, with a value of approximately 2.718. Temperature zone The nonlinear expansion coefficient, with a range of values. / K², The duration of the test is in seconds (s).

[0085] In this embodiment, the parameters for each temperature zone are set as follows: the sealing material is a high-temperature alloy, and the coefficient of linear expansion for each temperature zone is... Nonlinear expansion coefficient The initial length of the sealing area corresponding to each temperature zone. Thermal response time constants for each temperature zone , , , , Initial temperature Test duration .

[0086] Assuming that during the test, temperature zone 5 The pattern of change over time is as follows The thermal deformation in temperature zone 5 is calculated as follows:

[0087] Calculate the integral:

[0089] The result of the integral is

[0090] linear deformation contribution

[0091] Quadratic term calculation:

[0092] Calculate the square of the temperature difference:

[0093]

[0094] That is, 0.00003481mm.

[0095] thermal distortion

[0096] The negative sign indicates shrinkage deformation; the actual thermal deformation is taken as the absolute value. mm.

[0097] The laser displacement sensor in the segmented performance testing module collected a radial thermal deformation of 0.12 mm in temperature zone 5, consistent with the calculated result. This deformation is within the preset allowable range of ±50 μm, meeting the performance requirements. If the thermal deformation exceeds the allowable range, the adaptation optimization module will analyze the cause of the deviation. If the excessive thermal deformation is due to an excessively high temperature in the temperature zone, an instruction will be sent to the single-temperature-zone independent control module to reduce the target temperature of that temperature zone. If the excessive fluctuation in thermal deformation is due to insufficient temperature control accuracy, the PID algorithm parameters will be adjusted to improve temperature control stability. In the overall sealing performance test, the sealing pressure sensor detected a uniform pressure distribution at the sealing interface with an average pressure of 6.5 MPa, and the helium leakage rate detection device detected a leakage rate of 5 × The Pa·m³ / s values ​​all meet the preset performance requirements, indicating that the system's temperature field control and sealing components are well-matched.

[0098] The real-time temperature data of each temperature zone collected by the segmented temperature measurement module is transmitted to the correction module. Based on the deviation between the measured temperature and the target temperature, the correction module generates a power adjustment command and sends it to the segmented heating module to adjust the power output of the corresponding heating component. The deviation calculation uses a weighted deviation formula:

[0099] Used to quantify the Temperature deviation in each temperature zone, and explanation of each parameter: For the first Temperature deviation assessment value for each temperature zone, unit: K². This is the weighting coefficient for the second-order deviation, with a value ranging from 0.01 to 0.1. , This is the absolute deviation weighting coefficient, with a value ranging from 1 to 5. , For the first Measured temperatures for each temperature zone, unit: °C For the first Target temperature for each temperature zone, unit: °C. When the K² threshold value exceeds the range of 0.5 to 2.0, power correction is triggered by the single-temperature zone independent control module.

[0100] In this embodiment, each temperature zone and The parameters are set as follows: temperature range 1~5 , The deviation threshold is set to 1.0 K². Assume that during the test, temperature zone 3... , The deviation assessment value for temperature zone 3 is calculated as follows:

[0101] because The correction module generates a power adjustment command and calculates the power adjustment amount: the power adjustment amount and... Proportional to the specified value, with a proportionality coefficient of 0.01 W / K², therefore the power adjustment is: ,because The heating power needs to be reduced; the adjusted power is: The correction module sends a power adjustment command to the thyristor power regulator of the modular heating assembly in temperature zone 3 to adjust the heating power until... It drops to within the threshold range.

[0102] The adaptation and optimization module acquires the thermal deformation data and overall sealing performance indicators from the segmented performance testing module, fine-tunes the temperature zone boundary parameters through the flexible temperature zone division module, and corrects the target temperature value through the independent single temperature zone control module, so that the performance of each area of ​​the seal matches the corresponding temperature zone; wherein the temperature zone boundary fine-tuning amount The calculation is based on the requirement of uniformity of thermal deformation, and the formula is:

[0103] Based on the principle of uniform thermal deformation, the difference in thermal deformation between the temperature zones on both sides of the boundary needs to be offset by boundary fine-tuning; according to the thermal expansion formula... Deformation Define boundaries Average linear expansion coefficient of both temperature zones Average temperature difference Explanation of each parameter: For the first Fine-tuning amount for the boundary of each temperature zone, in meters. Temperature zone In time Thermal deformation at time, unit: m, by The formula is used to calculate, Temperature zone In time Thermal deformation during operation, unit: m. For the boundary The average linear expansion coefficient of the two temperature zones, in units of / K. Temperature zone The coefficient of linear expansion, in units of / K. Temperature zone The coefficient of linear expansion, in units of / K. For the boundary The average temperature difference between the two temperature zones, in °C. Temperature zone Target temperature, unit: °C Temperature zone Target temperature, unit: °C Initial temperature, in °C. For the boundary The initial length, in meters. A positive value indicates the boundary extends into the temperature range. Offset, negative indicates to the temperature range Offset.

[0104] In this embodiment, the boundary between temperature zone 1 and temperature zone 2 The boundary between temperature zone 2 and temperature zone 3 The boundary between temperature zone 3 and temperature zone 4 The boundary between temperature zone 4 and temperature zone 5 .

[0105] The parameters for each boundary are set as follows: Boundary of Temperature zone 2 Temperature zone 3 , , , , , , .

[0106] Then the boundary The fine-tuning amount is calculated as follows:

[0107] because If the value is positive, the adaptation optimization module sends a boundary adjustment command to the temperature zone flexible division module, adjusting the boundary... The temperature zone 3 is shifted 5.88mm to the temperature zone 2 to increase its range, so that the thermal deformation of the temperature zone 2 and temperature zone 3 is evenly distributed. After the boundary is adjusted, the segmented heating module synchronously adjusts the structure of the modular heating components of the temperature zone 2 and temperature zone 3 to ensure that the heating components match the adjusted temperature zone boundary and maintain the heating uniformity of each temperature zone.

[0108] This embodiment applies a multi-segment independent temperature control testing and adaptation system for seals to the testing scenario of high-pressure seals for aero-engines. It achieves precise control of the multi-segment gradient temperature field, accurately detects the thermal deformation and sealing performance of the seals, and optimizes the temperature field parameters and temperature control parameters based on the test data to ensure that the seals meet the operating requirements of aero-engines. The various modules of the system form a complete testing and adaptation process through close data interaction and control linkage, providing reliable technical support for the research and development and quality inspection of high-pressure seals for aero-engines.

[0109] It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-section independent temperature control testing and adaptation system for sealing components, characterized in that, include: A multi-segment independent temperature control module is used to set temperature zone parameters and perform independent control according to the sealing component testing requirements; a multi-segment heating execution module is used to realize segmented heating according to temperature zone parameters; a temperature field feedback and correction module is used to collect temperature data of each temperature zone and provide feedback correction; and a sealing component testing and adaptation module is used to complete sealing component performance testing and adaptation optimization based on a stable temperature field. All modules form a complete testing and adaptation system through data interaction and control linkage.

2. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 1, characterized in that, The multi-segment independent temperature control module includes a flexible temperature zone division module, a single temperature zone independent control module, and a gradient temperature field coordination module. The flexible temperature zone division module is used to customize the number and range of temperature zones as needed and define the boundary parameters of the temperature zones. The single temperature zone independent control module is used to independently set the temperature of each temperature zone to achieve precise temperature control at a preset accuracy level. The gradient temperature field coordination module is used to control the gradient difference between temperature zones to ensure stable coordination of the overall temperature field.

3. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 1, characterized in that, The multi-segment heating execution module includes a segmented heating module and a bonding and conduction module; the segmented heating module contains modular heating components that correspond one-to-one with the temperature zones; the bonding and conduction module is used to achieve adaptive bonding between the heating components and the surface of the sealing element, and to transfer heat through a high-efficiency heat conduction structure.

4. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 1, characterized in that, The temperature field feedback and correction module includes a zone temperature measurement module and a correction module. The zone temperature measurement module collects temperature data through independent temperature measurement channels in each temperature zone and simultaneously monitors the temperature boundary of each temperature zone. The correction module is used to compare the measured temperature of each temperature zone with the target temperature and to perform accurate correction on a single temperature zone.

5. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 4, characterized in that, The correction module quantifies the degree of temperature deviation in the temperature zone using a weighted deviation formula. Specifically, it calculates the deviation assessment value based on the difference between the measured temperature and the target temperature by combining the secondary deviation weighting coefficient and the absolute deviation weighting coefficient. When the deviation assessment value exceeds a preset threshold, the power correction is triggered by the single-temperature-zone independent control module. The heating power is reduced when there is a positive deviation and increased when there is a negative deviation.

6. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 1, characterized in that, The sealing component testing and adaptation module includes a segment performance testing module and an adaptation optimization module. The segment performance testing module is used to detect the thermal deformation of the sealing component in each temperature zone and evaluate the overall sealing performance. The adaptation optimization module is used to fine-tune the temperature field parameters based on the test data to optimize the compatibility between the sealing component and the temperature field.

7. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 6, characterized in that, The logic of the adaptation optimization module in adjusting the temperature zone boundary parameters includes: based on the requirement of uniform thermal deformation, calculating the temperature zone boundary fine-tuning amount through the thermal deformation difference, average linear expansion coefficient, average temperature difference and initial boundary length of the temperature zones on both sides of the boundary; a positive fine-tuning amount indicates that the boundary is shifted to one side of the temperature zone, and a negative fine-tuning amount indicates that it is shifted to the other side of the temperature zone; at the same time, the target temperature value is corrected based on the overall sealing performance index so that the performance of each area of ​​the sealing component matches the temperature of the corresponding temperature zone.

8. The multi-segment independent temperature control testing and adaptation system for sealing components according to claim 1, characterized in that, The multi-segment independent temperature control module and the multi-segment heating execution module form a temperature control and heating linkage mechanism, specifically including: the target temperature of a single temperature zone and the power of the heating component are correlated and controlled through a precise matching algorithm; the number of temperature zones and the combination of heating components are adapted according to set parameters; the precise matching algorithm is based on the principle of heat conduction balance and dynamic heat loss compensation, and calculates the heating power through parameters such as thermal conductivity, heat transfer area, the difference between the target temperature and the ambient temperature, heat loss correction coefficient, and heating efficiency.

9. A multi-segment independent temperature control testing and adaptation system for sealing components according to claim 2, characterized in that, The temperature field feedback and correction module and the multi-segment independent temperature control module form a feedback and correction mechanism, which specifically includes: real-time transmission of measured data of a single temperature zone to the single temperature zone independent control module for correcting temperature control parameters; temperature zone boundary deviation is collaboratively corrected through the gradient temperature field collaborative module, and the boundary temperature zone correction value is calculated by combining the basic deviation correction term and the weighted average coupling correction term of adjacent temperature zones.

10. A multi-segment independent temperature control testing and adaptation system for sealing components according to claim 9, characterized in that, The sealing component testing and adaptation module and the multi-segment independent temperature control module form a testing and temperature control adaptation mechanism, which specifically includes: the test requirements are dynamically adjusted by the temperature zone flexible division module to adjust the temperature zone parameters, and the performance test data is transmitted to the single-temperature zone independent control module to optimize the temperature control accuracy; the correlation between thermal deformation detection data and temperature field parameters is based on the basic principle of thermal expansion, and a correlation model is constructed by combining the time accumulation effect of temperature change, thermal response hysteresis characteristics and the influence of nonlinear thermal expansion at high temperature.

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