Control method and system of autoclave

By designing and distributing multiple heating points and temperature sensors in a large-volume hot press tank, the temperature field uniformity is monitored and adjusted in real time, the problem of difficult to maintain the temperature field uniformity during the heating of the large-volume hot press tank is solved, and product quality and production efficiency are improved.

CN119960522AInactive Publication Date: 2025-05-09SHANDONG FANGDING SAFETY GLASS TECH CO LTD

Patent Information

Application Number
CN202510438513.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-09
Publication Date
2025-05-09
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

It is difficult for large-volume hot pressing tanks to maintain the temperature field uniformity in the tank during the heating process, resulting in uneven material heat exchange and affecting product structural strength and quality stability.

Method used

A hot press tank control system is designed, including an information acquisition module, an information processing module, an intelligent analysis module and an adjustment control module. By distributing multiple heating points and temperature sensors, the temperature field uniformity is monitored and analyzed in real time, and the heater power is adjusted according to the analysis results to maintain the temperature field uniformity.

Benefits of technology

It realizes the maintenance of temperature field uniformity in large hot press tanks, improves product quality and production efficiency, and ensures uniform curing of composite materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an autoclave control method and system, and relates to the technical field of autoclave control, the system comprises an information acquisition module, an information processing module, an intelligent analysis module and an adjustment control module; the information acquisition module is used for acquiring temperature information of heating points distributed at multiple points in the autoclave and storing the temperature information; processing the acquired temperature information in the autoclave through the information processing module, and analyzing to obtain the uniformity of a temperature field in the autoclave; a temperature field uniformity standard value is set through the intelligent analysis module, the temperature field uniformity obtained through real-time temperature analysis is compared with the temperature field uniformity standard value, and an adjustment instruction is generated according to a comparison result; the adjustment control module adjusts the power of the heater corresponding to the abnormal temperature according to the instruction to maintain the uniformity of the temperature field in the autoclave; the control system is used for coordinating and controlling the power of a plurality of heaters in the autoclave so as to maintain the temperature field uniformity in the autoclave.
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Description

Technical Field

[0001] The present invention relates to the technical field of autoclave control, and in particular to an autoclave control method and system thereof. Background Art

[0002] The autoclave is a sealed forced convection internal circulation heating pressure vessel, in which the temperature, pressure and vacuum are effectively controlled; the temperature and pressure achieved according to the set process curve can be obtained, and perfect product quality and yield rate can be guaranteed; after a certain preheating and pre-pressing, the glass enters the tank, and when the tank door is ensured to be closed, the equipment enters the automatic operation stage and performs the above multiple stages according to the set parameters.

[0003] An autoclave is a device for curing and molding composite components. In composite molding technology, the uniform temperature and uniform pressure provided in the autoclave must be used to achieve the purpose of curing composite materials. During the molding process, the material and the working medium in the tank will first undergo uniform and sufficient heat exchange. If the temperature distribution inside the autoclave is uneven, it will inevitably lead to uneven heat exchange in different parts of the material, which will in turn generate temperature stress during the curing process, and even lead to local inadequate curing or local over-curing, which will ultimately affect the product's structural strength and the stability of product quality. Therefore, the uniformity of the temperature field must be ensured during the hot pressing molding process. Large autoclaves have a large internal space and can be used to prepare products with a large area. However, in the current control of large autoclaves, the problem of maintaining the uniformity of the temperature field in large-volume autoclaves during the heating process is an urgent problem to be solved. Because large-volume autoclaves require a large space for heating, it is more difficult to control the uniformity of the temperature field inside the autoclave during the heating process. Summary of the invention

[0004] The object of the present invention is to provide a control method and system of an autoclave to solve the problems in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: a control system for an autoclave, the system comprising an information acquisition module, an information processing module, an intelligent analysis module and an adjustment control module; The information acquisition module is used to collect temperature information at different positions in the autoclave, and the collected temperature information is stored in a memory; The collected temperature information in the autoclave is processed by the information processing module, and the uniformity of the temperature field in the autoclave is obtained by data analysis; The intelligent analysis module is used to set a standard value of temperature field uniformity during the operation of the autoclave, and the temperature field uniformity obtained by real-time monitoring temperature analysis is compared with the standard value of temperature field uniformity, and an adjustment instruction is generated according to the comparison result; The adjustment control module adjusts the power of the heater corresponding to the abnormal temperature according to the instruction to maintain the uniformity of the temperature field in the autoclave.

[0006] Furthermore, the information acquisition module includes a device distribution unit and a data acquisition unit; the temperature sensors and heaters are distributed in the autoclave through the device distribution unit, the internal space of the autoclave is planned, the internal space of the autoclave is evenly divided into n areas, and the divided areas are numbered, and a heater and a temperature sensor are set in each area at the same time; the data acquisition unit collects temperature values ​​at different positions in the autoclave through the temperature sensors distributed in the autoclave, and stores the collected temperature value information in the memory.

[0007] Furthermore, the information processing module processes the temperature information distributed at different heating points in the autoclave, and obtains the temperature field uniformity in the autoclave according to the temperature numerical analysis at different positions. The obtained temperature field uniformity is used for comparative analysis with the temperature field uniformity standard value, thereby achieving the effect of real-time monitoring of whether the temperature in the autoclave is uniform.

[0008] Furthermore, the intelligent analysis module analyzes the relationship between the heating power of the heaters distributed at different positions in the autoclave and the temperature value increased by the heaters to obtain the heating temperature that the heaters can obtain under different heating powers; sets a standard value for the uniformity of the temperature field in the autoclave, and compares the temperatures at different positions in the autoclave collected by the temperature sensor with the standard value for the uniformity of the temperature field to analyze and determine whether the uniformity of the temperature field in the autoclave meets the standard; when the uniformity of the temperature field does not meet the standard, further analyzes the abnormal temperatures in the temperatures collected by the temperature sensors at different positions, records the numbers corresponding to the abnormal temperatures, generates adjustment instructions, and adjusts the heating power of the heaters corresponding to the abnormal temperature numbers.

[0009] Furthermore, the adjustment control module adjusts the power of the heaters in different areas of the autoclave according to the generated instructions, and coordinates the overall temperature inside the autoclave by adjusting the heating power of the heaters in the abnormal temperature area to maintain the uniformity of the temperature field in the autoclave.

[0010] The control method of the autoclave is characterized by comprising the following steps: S1: Collect and store the temperature values ​​at different positions in the autoclave; S2: Process the collected temperature information in the autoclave and analyze the uniformity of the temperature field in the autoclave; S3: analyzing the relationship between the heating power of the heater and the temperature obtained by the operation of the heater, and comparing the obtained temperature field uniformity with the standard value of the temperature field uniformity, and generating an instruction to adjust the heating power of the corresponding heater; S4: Adjust the heating power of the heater in the area where the abnormal temperature is located according to the instruction.

[0011] Furthermore, in step S1: temperature data of different positions in the autoclave are collected using temperature sensors distributed at different positions in the autoclave, and the temperature data are stored in a memory.

[0012] Further, in step S2: the temperature data at different positions in the autoclave collected by the temperature sensors are processed, and the uniformity of the temperature field in the autoclave is analyzed. The temperature values ​​collected by the temperature sensors at different positions are , analyze the temperature field uniformity according to the formula: ; in, Indicates the uniformity of the autoclave temperature field. Indicates the number of different areas divided for setting temperature sensors and heaters; Indicates the total number of zones in the autoclave for setting heaters and temperature sensors.

[0013] Further, in step S3: heating points are arranged at different positions in the autoclave, and the heating powers of the heaters at different positions can be individually adjusted by the controller. The controller adjusts the power changes of the heaters at different positions, and coordinates and controls the temperature changes of the heaters at different positions, so as to maintain the uniformity of the temperature field of the autoclave; the power of the heaters at different heating points in the autoclave is , according to the formula, the ideal temperature that the heater reaches when running at a certain power is analyzed: ; in, Indicates the ideal temperature value that the heater can heat to under the corresponding heating power; represents the initial temperature; Indicates the heating power of heaters distributed at different positions; Indicates the quality of the heat transfer medium. Indicates the specific heat capacity of the heat-conducting medium; Indicates the running time of the heater heating process; The standard value for setting the temperature field uniformity in the autoclave is The temperature uniformity obtained by real-time monitoring of the temperature at different heating points is Compared with the standard temperature field uniformity A comparative analysis was conducted and the results are as follows: when When the temperature data collected by the sensor is analyzed, an adjustment instruction is generated to adjust the heating power of the heater corresponding to the abnormal temperature number; when No adjustment instructions are generated.

[0014] Further, in step S4: setting the standard fluctuation range of the ideal temperature , Indicates the temperature fluctuation value, which is used to limit the fluctuation of the temperature value collected by the temperature sensor; when the comparison analysis result is When further analyzing the temperature data collected by the temperature sensor in the storage at different positions in the autoclave Each temperature value is compared with the standard fluctuation range of the ideal temperature that can be produced by the corresponding number of heaters. Comparative analysis is performed. If the temperature collected by the temperature sensor is not within the standard fluctuation range of the ideal temperature, it is judged as abnormal temperature and the number of the abnormal temperature is recorded. Then an adjustment instruction is generated to adjust the heater power corresponding to the abnormal temperature number. The analysis results are as follows: when When the temperature of the area is abnormally low, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to increase the heating power; when When the temperature of the area is abnormally high, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to reduce the heating power; The heating powers of the heaters distributed in all the areas with abnormal temperatures are adjusted in the above manner until the uniformity of the temperature field in the autoclave reaches the standard uniformity.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention heats the autoclave through multiple heating points distributed in the autoclave, which can ensure the heating speed of a large autoclave when preparing products, improve the production efficiency of the assembled products, and monitor the temperature in the autoclave in real time through multiple temperature sensors, and obtain the uniformity of the temperature field in the autoclave through real-time analysis through data analysis and intelligent control, and maintain the uniformity of the temperature field in the autoclave during the heating process by adjusting the operating power of the heater in real time, thereby ensuring the quality of the products prepared by the autoclave. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the control system of the autoclave of the present invention; Figure 2 It is a schematic flow chart of the control method of the autoclave of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1-Figure 2 As shown, the present invention provides a control system for an autoclave, the system comprising an information acquisition module, an information processing module, an intelligent analysis module and an adjustment control module; The information acquisition module is used to collect temperature information at different positions in the autoclave, and the collected temperature information is stored in a memory; The collected temperature information in the autoclave is processed by the information processing module, and the uniformity of the temperature field in the autoclave is obtained by data analysis; The intelligent analysis module is used to set a standard value of temperature field uniformity during the operation of the autoclave, and the temperature field uniformity obtained by real-time monitoring temperature analysis is compared with the standard value of temperature field uniformity, and an adjustment instruction is generated according to the comparison result; The adjustment control module adjusts the power of the heater corresponding to the abnormal temperature according to the instruction to maintain the uniformity of the temperature field in the autoclave.

[0019] The information acquisition module includes an equipment distribution unit and a data acquisition unit; temperature sensors and heaters are distributed in the autoclave through the equipment distribution unit, the internal space of the autoclave is planned, the internal space of the autoclave is evenly divided into n areas, and the divided areas are numbered, and a heater and a temperature sensor are simultaneously arranged in each area; the data acquisition unit collects temperature values ​​at different positions in the autoclave through the temperature sensors distributed in the autoclave, and stores the collected temperature value information in a memory.

[0020] The information processing module processes the temperature information distributed at different heating points in the autoclave, and obtains the temperature field uniformity in the autoclave according to the temperature numerical analysis at different positions. The obtained temperature field uniformity is used for comparative analysis with the temperature field uniformity standard value, thereby achieving the effect of real-time monitoring whether the temperature in the autoclave is uniform.

[0021] The intelligent analysis module analyzes the relationship between the heating power of the heaters distributed at different positions in the autoclave and the temperature value increased by the heaters to obtain the heating temperature that the heaters can obtain under different heating powers; sets a standard value for the uniformity of the temperature field in the autoclave, and compares the temperature field uniformity of the autoclave obtained by collecting the temperatures at different positions in the autoclave through the temperature sensor with the standard value for the uniformity of the temperature field, analyzes and determines whether the uniformity of the temperature field in the autoclave meets the standard; when the uniformity of the temperature field does not meet the standard, further analyzes the abnormal temperatures among the temperatures collected by the temperature sensors at different positions, records the numbers corresponding to the abnormal temperatures, generates adjustment instructions, and adjusts the heating power of the heaters corresponding to the abnormal temperature numbers.

[0022] The adjustment control module adjusts the power of the heaters in different areas of the autoclave according to the generated instructions, and coordinates the overall temperature inside the autoclave by adjusting the heating power of the heaters in the abnormal temperature area to maintain the uniformity of the temperature field in the autoclave.

[0023] The control method of the autoclave is characterized by comprising the following steps: S1: Collect and store the temperature values ​​at different positions in the autoclave; S2: Process the collected temperature information in the autoclave and analyze the uniformity of the temperature field in the autoclave; S3: analyzing the relationship between the heating power of the heater and the temperature obtained by the operation of the heater, and comparing the obtained temperature field uniformity with the standard value of the temperature field uniformity, and generating an instruction to adjust the heating power of the corresponding heater; S4: Adjust the heating power of the heater in the area where the abnormal temperature is located according to the instruction.

[0024] In step S1 : temperature data at different positions in the autoclave are collected using temperature sensors distributed at different positions in the autoclave, and the temperature data are stored in a memory.

[0025] In step S2: the temperature data collected by the temperature sensors at different positions in the autoclave are processed, and the uniformity of the temperature field in the autoclave is analyzed. The temperature values ​​collected by the temperature sensors at different positions are , analyze the temperature field uniformity according to the formula: ; in, Indicates the uniformity of the autoclave temperature field. Indicates the number of different areas divided for setting temperature sensors and heaters; Indicates the total number of zones in the autoclave for setting heaters and temperature sensors.

[0026] In step S3: heating points are arranged at different positions in the autoclave, and the heating powers of the heaters at different positions can be individually adjusted by the controller. The controller adjusts the power changes of the heaters at different positions and coordinates the temperature changes of the heaters at different positions to maintain the uniformity of the temperature field of the autoclave. The power of the heaters at different heating points in the autoclave is , according to the formula, the ideal temperature that the heater reaches when running at a certain power is analyzed: ; in, Indicates the ideal temperature value that the heater can heat to under the corresponding heating power; represents the initial temperature; Indicates the heating power of heaters distributed at different positions; Indicates the quality of the heat transfer medium. It represents the specific heat capacity of the heat conducting medium; Indicates the running time of the heater heating process; The standard value for setting the temperature field uniformity in the autoclave is The temperature uniformity obtained by real-time monitoring of the temperature at different heating points is Compared with the standard temperature field uniformity A comparative analysis was conducted and the results are as follows: when When the temperature data collected by the sensor is analyzed, an adjustment instruction is generated to adjust the heating power of the heater corresponding to the abnormal temperature number; when No adjustment instructions are generated.

[0027] In step S4: Setting the standard fluctuation range of the ideal temperature , Indicates the temperature fluctuation value, which is used to limit the fluctuation of the temperature value collected by the temperature sensor; when the comparison analysis result is When further analyzing the temperature data collected by the temperature sensor in the storage at different positions in the autoclave Each temperature value is compared with the standard fluctuation range of the ideal temperature that can be produced by the corresponding number of heaters. Comparative analysis is performed. If the temperature collected by the temperature sensor is not within the standard fluctuation range of the ideal temperature, it is judged as abnormal temperature and the number of the abnormal temperature is recorded. Then an adjustment instruction is generated to adjust the heater power corresponding to the abnormal temperature number. The analysis results are as follows: when When the temperature of the area is abnormally low, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to increase the heating power; when When the temperature of the area is abnormally high, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to reduce the heating power; The heating powers of the heaters distributed in all the areas with abnormal temperatures are adjusted in the above manner until the uniformity of the temperature field in the autoclave reaches the standard uniformity.

[0028] Embodiment 1: Taking a large autoclave using ideal air as the heat transfer medium as an example, the volume of the autoclave is 9m 3 , the design distributes 6 heaters and temperature sensors in the autoclave, that is, the 6 heaters are evenly distributed in the autoclave, which is equivalent to dividing the internal space of the autoclave into six parts and heating them simultaneously with the 6 heaters. At the same time, 6 temperature sensors are set in the one-sixth space area to which the 6 heaters belong to collect the temperature at different positions in the autoclave.

[0029] The control method of the autoclave is characterized by comprising the following steps: S1: Collect and store the temperature values ​​at different positions in the autoclave; S2: Process the collected temperature information in the autoclave and analyze the uniformity of the temperature field in the autoclave; S3: analyzing the relationship between the heating power of the heater and the temperature obtained by the operation of the heater, and comparing the obtained temperature field uniformity with the standard value of the temperature field uniformity, and generating an instruction to adjust the heating power of the corresponding heater; S4: Adjust the heating power of the heater in the area where the abnormal temperature is located according to the instruction.

[0030] In step S1 : temperature data at different positions in the autoclave are collected using temperature sensors distributed at different positions in the autoclave, and the temperature data are stored in a memory.

[0031] In step S2: the temperature data collected by the temperature sensors at different locations in the autoclave are processed, and the uniformity of the temperature field in the autoclave is analyzed. The temperature values ​​collected by the temperature sensors distributed in different areas are , 1, 2, 3, 4, 5, 6; the temperatures recorded by the 6 sensors are , , , , , ; Analyze the temperature field uniformity according to the formula: ; in, Indicates the uniformity of the autoclave temperature field, which is obtained by calculation , Indicates the numbers of the different areas divided for setting temperature sensors and heaters.

[0032] In step S3, heating points are arranged at different positions in the autoclave, and the heating powers of the heaters at different positions can be individually adjusted by the controller. The controller adjusts the power changes of the heaters at different positions and coordinates the temperature changes of the heaters at different positions to maintain the uniformity of the temperature field of the autoclave. The power of the heaters at different heating points in the autoclave is In the initial state, the heating power of the heaters at different positions is set to be the same. The ideal temperature reached by the heater when running at a certain power is analyzed according to the formula: ; in, The ideal temperature value that the heater can heat to under the corresponding heating power is; represents the initial temperature; Indicates the heating power of heaters distributed at different positions; represents the mass of the heat transfer medium, let , Indicates the specific heat capacity of the heat transfer medium. Taking air as the heat transfer medium in the autoclave, the specific heat capacity ; Indicates the running time of the heater heating process; The standard value for setting the temperature field uniformity in the autoclave is The temperature uniformity obtained by real-time monitoring of the temperature at different heating points is Compared with the standard temperature field uniformity A comparative analysis was conducted and the results are as follows: when When , it is judged that the temperature uniformity in the autoclave is within the standard value requirement range, and the temperature data collected by the sensor at this time is further analyzed, and an adjustment instruction is generated to adjust the heating power of the heater corresponding to the abnormal temperature number.

[0033] In step S4: Setting the standard fluctuation range of the ideal temperature , represents the temperature fluctuation value, let , the standard fluctuation range is In the initial state, the heating power of the heaters at different positions is set to be the same, and the ideal temperature values ​​obtained are , then the standard fluctuation range is , which is used to limit the fluctuation of the temperature value collected by the temperature sensor; when the comparative analysis result is When further analyzing the temperature data collected by the temperature sensor in the storage at different positions in the autoclave Each temperature value is compared with the standard fluctuation range of the ideal temperature that can be produced by the corresponding number of heaters. A comparative analysis was conducted and the results are as follows: when When the temperature in area 3 is judged to be abnormally low, the number of the area is recorded. , and generates an adjustment instruction to increase the heating power of heater No. 3 to generate more heat and increase the temperature of this area; when When the temperature in area 4 is judged to be abnormally high, the number of the area is recorded. 4. Generate an adjustment instruction to reduce the heating power of heater No. 4, reduce the heat generated, and reduce the temperature value of this area; when When the temperature in area 5 is judged to be abnormally high, the number of the area is recorded. 5. Generate an adjustment instruction to reduce the heating power of heater No. 5, reduce the heat generated, and lower the temperature value of this area; By adjusting the heater power in different areas, changing the heat generated by the heaters in different areas, and balancing the overall temperature in the autoclave, the uniformity of the temperature field in the autoclave is maintained.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. The control system of the autoclave is characterized by: The system includes an information collection module, an information processing module, an intelligent analysis module and an adjustment control module; The information acquisition module is used to collect temperature information at different positions in the autoclave, and the collected temperature information is stored in a memory; The collected temperature information in the autoclave is processed by the information processing module, and the uniformity of the temperature field in the autoclave is obtained by data analysis; The intelligent analysis module is used to set a standard value of temperature field uniformity during the operation of the autoclave, and the temperature field uniformity obtained by real-time monitoring temperature analysis is compared with the standard value of temperature field uniformity, and an adjustment instruction is generated according to the comparison result; The adjustment control module adjusts the power of the heater corresponding to the abnormal temperature number according to the instruction to maintain the uniformity of the temperature field in the autoclave.

2. The control system of the autoclave according to claim 1, characterized in that: The information acquisition module includes an equipment distribution unit and a data acquisition unit; temperature sensors and heaters are distributed in the autoclave through the equipment distribution unit, the internal space of the autoclave is planned, the internal space of the autoclave is evenly divided into n areas, and the divided areas are numbered, and a heater and a temperature sensor are simultaneously arranged in each area; the data acquisition unit collects temperature values ​​at different positions in the autoclave through the temperature sensors distributed in the autoclave, and stores the collected temperature value information in a memory.

3. The control system of the autoclave according to claim 1, characterized in that: The information processing module processes the temperature information distributed at different heating points in the autoclave, and obtains the uniformity of the temperature field in the autoclave according to the temperature numerical analysis at different positions.

4. The control system of the autoclave according to claim 1, characterized in that: The intelligent analysis module analyzes the relationship between the heating power of the heaters at different positions in the autoclave and the temperature value raised by the heaters to obtain the heating temperature that the heaters can obtain under different heating powers; sets a standard value for the uniformity of the temperature field in the autoclave, and compares the temperatures at different positions in the autoclave collected by the temperature sensor with the standard value for the uniformity of the temperature field to analyze and determine whether the uniformity of the temperature field in the autoclave meets the standard; when the uniformity of the temperature field does not meet the standard, further analyzes the abnormal temperatures among the temperatures collected by the temperature sensors at different positions, records the numbers corresponding to the abnormal temperatures, generates adjustment instructions, and adjusts the heating power of the heaters corresponding to the abnormal temperature numbers.

5. The control system of the autoclave according to claim 1, characterized in that: The adjustment control module adjusts the power of the heaters in different areas of the autoclave according to the generated instructions, and coordinates the overall temperature inside the autoclave by adjusting the heating power of the heaters in the abnormal temperature area to maintain the uniformity of the temperature field in the autoclave.

6. The control method of the autoclave is characterized by: The following steps are involved: S1: Collect and store the temperature values ​​at different positions in the autoclave; S2: Process the collected temperature information in the autoclave and analyze the uniformity of the temperature field in the autoclave; S3: analyzing the relationship between the heating power of the heater and the temperature obtained by the operation of the heater, and comparing the obtained temperature field uniformity with the standard value of the temperature field uniformity, and generating an instruction to adjust the heating power of the corresponding heater; S4: Adjust the heating power of the heater in the area where the abnormal temperature is located according to the instruction.

7. The control method of the autoclave according to claim 6, characterized in that: In step S1 : temperature data at different positions in the autoclave are collected using temperature sensors distributed at different positions in the autoclave, and the temperature data are stored in a memory.

8. The control method of the autoclave according to claim 6, characterized in that: In step S2: the temperature data collected by the temperature sensors at different positions in the autoclave are processed, and the uniformity of the temperature field in the autoclave is analyzed. The temperature values ​​collected by the temperature sensors at different positions are , analyze the temperature field uniformity according to the formula: ; in, Indicates the uniformity of the autoclave temperature field. Indicates the number of different areas divided for setting temperature sensors and heaters; Indicates the total number of zones in the autoclave for setting heaters and temperature sensors.

9. The control method of the autoclave according to claim 8, characterized in that: In step S3: heating points are arranged at different positions in the autoclave, and the heating powers of the heaters at different positions can be individually adjusted by the controller. The controller adjusts the power changes of the heaters at different positions and coordinates the temperature changes of the heaters at different positions to maintain the uniformity of the temperature field of the autoclave. The power of the heaters at different heating points in the autoclave is , according to the formula, the ideal temperature that the heater reaches when running at a certain power is analyzed: ; in, Indicates the ideal temperature value that the heater can heat to under the corresponding heating power; represents the initial temperature; Indicates the heating power of heaters distributed at different positions; Indicates the quality of the heat transfer medium. It represents the specific heat capacity of the heat conducting medium; Indicates the running time of the heater heating process; The standard value for setting the temperature field uniformity in the autoclave is The temperature uniformity obtained by real-time monitoring of the temperature at different heating points is Compared with the standard temperature field uniformity A comparative analysis was conducted and the results are as follows: when When the temperature data collected by the sensor is analyzed, an adjustment instruction is generated to adjust the heating power of the heater corresponding to the abnormal temperature number; when No adjustment instructions are generated.

10. The control method of the autoclave according to claim 9, characterized in that: In step S4: Setting the standard fluctuation range of the ideal temperature , Indicates the temperature fluctuation value, which is used to limit the fluctuation of the temperature value collected by the temperature sensor; when the comparison analysis result is When further analyzing the temperature data collected by the temperature sensor in the storage at different positions in the autoclave Each temperature value is compared with the standard fluctuation range of the ideal temperature that can be produced by the corresponding number of heaters. Comparative analysis is performed. If the temperature collected by the temperature sensor is not within the standard fluctuation range of the ideal temperature, it is judged as abnormal temperature and the number of the abnormal temperature is recorded. Then an adjustment instruction is generated to adjust the heater power corresponding to the abnormal temperature number. The analysis results are as follows: when When the temperature of the area is abnormally low, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to increase the heating power; when When the temperature of the area is abnormally high, the number of the area with abnormally low temperature is recorded, and an adjustment instruction is generated to adjust the heating power of the heater in the area with abnormally low temperature to reduce the heating power; The heating powers of the heaters distributed in all the areas with abnormal temperatures are adjusted in the above manner until the uniformity of the temperature field in the autoclave reaches the standard uniformity.

Citation Information

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