Microwave power measurement and verification methods, storage media, and controller
By connecting an electric heating module in series in the water-cooled circulation system of a MW-level rotary tube, the heating effect of a microwave source is simulated. Combining the principle of calorimetry, the flow rate, temperature, and pressure of the water-cooled circulation system are monitored and cross-verified in real time. This solves the problem of the accuracy of power measurement of key components of the MW-level rotary tube and realizes safe and reliable power measurement.
Patent Information
- Application Number
- CN202510937759.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2045-07-08
AI Technical Summary
In existing technologies, the power measurement methods for key components (diamond window and oil box) of MW-level gyrocompasses are not accurate enough. In particular, when the temperature transmitter fails or there is environmental vibration, the operating status cannot be accurately reflected, leading to safety hazards.
An electric heating module is connected in series in a megawatt-level rotary tube water-cooled circulation system. By simulating the heating effect of a microwave source and combining the principle of calorimetry, the flow rate, temperature and pressure of the water-cooled circulation branch are monitored in real time, the thermal power value is calculated, and cross-validation is performed to ensure the accuracy of the measurement.
This significantly improves the reliability and safety of power measurement for key components of MW-level gyrotrons, providing dual protection to ensure the accuracy and reliability of measurement results.
Smart Images

Figure CN120446578B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of microwave power measurement technology, and in particular to a microwave power measurement and verification method, storage medium, and controller. Background Technology
[0002] Megawatt (MW) gyrotrons are used for auxiliary heating of fusion plasma and are widely recognized as the only microwave source currently suitable for electron cyclotron resonance heating (ECRH), current drive (CD), and electron Bernstein wave heating systems in magnetic confinement fusion devices. Within the gyrotron, the diamond window and oil tank are two key functional components, responsible for the core tasks of microwave output and thermal management, respectively.
[0003] In related technologies, the main methods for measuring the power of various components of a MW-level gyrotron include liquid calorimetry and directional coupler detection. Liquid calorimetry, which converts microwave energy into heat energy in a liquid (primarily water) and then measures the microwave power using calorimetry, is widely used due to its mature technology and flexibility. However, if the calorimetric method fails due to temperature transmitter malfunction, environmental vibration, or external heat source interference, resulting in the measured power not accurately reflecting the operating status of the diamond window and oil tank, it can create a safety hazard for gyrotron operation. Therefore, to protect the safe operation of the gyrotron, a reliable verification method for power measurement of key components (diamond window, oil tank) is crucial. Summary of the Invention
[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to propose a microwave power measurement and verification method that improves the reliability of the verification results, providing dual assurance for the accurate measurement and safe operation of microwave power in MW-level gyrotrons.
[0005] A second objective of this invention is to provide a computer-readable storage medium.
[0006] The third objective of this invention is to provide a controller.
[0007] To achieve the above objectives, a first aspect of the present invention proposes a microwave power measurement verification method for a water-cooled circulation system for power measurement of multiple components of a megawatt-level gyrotube. Each component's water-cooled circulation branch is connected in series with an electric heating module. The method includes: controlling the electric heating module in the corresponding water-cooled circulation branch of each component to heat the water while simultaneously acquiring the flow rate, supply-side temperature, and return-side temperature of the cooling water in the corresponding water-cooled circulation branch of each component, and calculating the real-time thermal power value of the corresponding water-cooled circulation branch of each component; determining, based on the real-time thermal power value of the corresponding water-cooled circulation branch of each component, that the water-cooled circulation branch of each component has reached thermodynamic steady state, and recording the real-time thermal power value after reaching thermodynamic steady state as the power peak value of each component; verifying the power peak value of each component using the standard electric power value of the electric heating module, and cross-validating the power peak value of each component after successful verification to verify the accuracy of the water-cooled circulation system measurement.
[0008] According to the microwave power measurement and verification method of the present invention, an external micro electric heating module is used to simulate the heating effect of a microwave source on a water-cooled pipeline. Based on the calorimetric principle, the power measurement system is double-verified, which greatly improves the reliability of the verification results and provides dual protection for the accurate measurement and safe operation of microwave power of MW-level gyrotrons.
[0009] In addition, the microwave power measurement and verification method proposed in the above embodiments of the present invention may also have the following additional technical features:
[0010] According to an embodiment of the present invention, before the electric heating module in the corresponding water-cooled circulation branch of each of the components is heated, the method further includes: starting the water-cooled circulation system and stabilizing the cooling water of the water-cooled circulation system at a target temperature; adjusting the water supply pressure and flow rate of each of the water-cooled circulation branches, controlling the water supply pressure of each of the water-cooled circulation branches within a target pressure range, and stabilizing the flow rate of each of the water-cooled circulation branches at a target flow rate.
[0011] According to one embodiment of the present invention, the calculation of the real-time thermal power value of the water-cooled circulation branch corresponding to each component includes: calculating the supply / return water temperature difference of the water-cooled circulation branch corresponding to each component based on the supply water temperature and return water temperature of the water-cooled circulation branch corresponding to each component; and calculating the real-time thermal power value of the water-cooled circulation branch corresponding to each component based on the flow rate and the supply / return water temperature difference of the water-cooled circulation branch corresponding to each component using a thermal power conversion equation.
[0012] According to an embodiment of the present invention, determining that each water-cooled circulation branch corresponding to each component has reached a thermodynamic steady state based on the real-time thermal power value of each water-cooled circulation branch corresponding to each component includes: calculating the rate of change of the real-time thermal power value of each water-cooled circulation branch corresponding to each component to obtain the rate of change of thermal power of each water-cooled circulation branch corresponding to each component; and determining that the water-cooled circulation branch corresponding to the component has reached a thermodynamic steady state when the rate of change of thermal power of the water-cooled circulation branch corresponding to the component is less than a preset range.
[0013] According to one embodiment of the present invention, the method further includes:
[0014] When it is determined that the water-cooling circulation branch corresponding to the component has reached thermodynamic steady state, the electric heating device in the water-cooling circulation branch corresponding to the component is controlled to continue heating for a preset time and then stop heating.
[0015] According to one embodiment of the present invention, the step of verifying the power peak value of each component using the standard power value of the electric heating module includes: calculating the ratio of the difference between the power peak value of each component and the standard power value to the standard power value, and taking the absolute value to obtain the first absolute value of the ratio corresponding to each component; determining whether the first absolute value of the ratio corresponding to each component is less than or equal to a first preset threshold; if yes, then it is determined that the verification has passed; if no, then it is determined that the verification has failed.
[0016] According to an embodiment of the present invention, the cross-validation of the power peak values of each component includes: calculating the ratio of the difference between the two power peak values of each component to the average power value, and taking the absolute value to obtain a plurality of second ratio absolute values, wherein the average power value is the average power value of the power peak values of each component; determining whether each second ratio absolute value is less than or equal to a second preset threshold; if yes, then it is determined that the validation has passed; if no, then it is determined that the validation has failed.
[0017] According to one embodiment of the present invention, the component includes at least one of a diamond window and an oil box.
[0018] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the microwave power measurement and verification method as proposed in the first aspect of the present invention.
[0019] To achieve the above objectives, a third aspect of the present invention provides a controller, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the microwave power measurement and verification method as proposed in the second aspect of the present invention.
[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of a water-cooled circulation system of a MW-level rotary tube according to a specific embodiment of the present invention;
[0022] Figure 2 This is a flowchart of a microwave power measurement and verification method according to an embodiment of the present invention;
[0023] Figure 3 This is a flowchart illustrating the process before performing microwave power measurement and verification according to one embodiment of the present invention;
[0024] Figure 4 This is a flowchart illustrating the calculation of the real-time thermal power value of each component corresponding to the water-cooled circulation branch, according to an embodiment of the present invention.
[0025] Figure 5 This is a flowchart of an embodiment of the present invention for determining the thermodynamic steady state of the corresponding water-cooling circulation branch of each component;
[0026] Figure 6 This is a water-cooled circulation system for two key MW-level rotary tube components according to one embodiment of the present invention;
[0027] Figure 7(a) shows the temperature change curve of diamond window #1;
[0028] Figure 7(b) shows the temperature change curve of oil box #1;
[0029] Figure 8(a) shows the temperature change curve of diamond window #2;
[0030] Figure 8(b) shows the temperature change curve of oil box #2;
[0031] Figure 9 These are power variation curves of the diamond window and oil box on two MW-level gyrotron test benches;
[0032] Figure 10 This is a structural block diagram of the controller according to an embodiment of the present invention.
[0033] Explanation of icon numbers:
[0034] 1. Main water supply pipe; 2. Primary water supply branch pipe; 3. Secondary water supply branch pipe; 4. Ball valve; 5. Shut-off valve; 6. Water supply pressure transmitter; 7. Water supply flow transmitter; 8. Water supply temperature transmitter; 9. Drain valve; 10. Hoses; 11. Electric heating module; 12. Diamond window #1; 13. Secondary return water branch pipe; 14. Return water temperature transmitter; 15. Return water pressure transmitter; 16. Oil box #1; 17. Primary return water branch pipe; 18. Diamond window #2; 19. Oil box #2; 20. Main return water pipe; 500. Controller; 501. Processor; 502. Bus; 503. Storage medium; 504. Transceiver. Detailed Implementation
[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0036] It should be noted that when conducting long-pulse high-power experiments in MW-level gyrotrons, the diamond window must continuously withstand the transmission loss of high-power microwaves (e.g., 1MW), and the loss tangent is generally required to... Excessive losses can lead to significant localized temperature rise in the diamond window, decreased microwave transmission efficiency, and even microcracks caused by uneven thermal expansion. Therefore, it is necessary to measure the power of the diamond window in real time and stop the experiment when its power exceeds the limit. Furthermore, real-time monitoring of the oil box power is crucial for the safe operation of the gyrotron. An abnormal increase in its power indicates an abnormal cathode operating condition. When the electron beam velocity distribution deviates from the design parameters, it will lead to a significant reduction in energy conversion efficiency. This monitoring can also effectively prevent oil cooling system failure. If the oil temperature exceeds the boiling point of the medium, vaporization will occur, causing insulation degradation and inducing localized arc discharge accidents.
[0037] Currently, there are no projects with detailed theoretical support and practical application in the research on power measurement and verification methods for key components of gyrotrons (diamond window, oil box). Most studies still focus on the design of power measurement and verification schemes at the absorption load or MOU (Microwave Output Unit) of the gyrotron, using calorimetry to verify the accuracy of power detection.
[0038] The existing gyrotron microwave power measurement system and calibration method have limitations in engineering applications. For example, the large size of the calibration equipment limits its spatial compatibility with the microwave test bench, insufficient turbulent mixing restricts the accuracy of temperature field characterization, and the lack of verification of the calibration coefficient k (which theoretically characterizes the product of the specific heat capacity C of cooling water and the flow rate F) affects the accuracy of microwave power measurement results.
[0039] To address the aforementioned problems, embodiments of the present invention provide a microwave power measurement and verification method, a storage medium, and a controller. The microwave power measurement and verification method, storage medium, and controller of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.
[0040] The microwave power measurement and verification method of this invention is used in a water-cooled circulation system for power measurement of multiple components of a megawatt-level gyrotube, wherein an electric heating module is connected in series in the water-cooled circulation branch of each component.
[0041] In one embodiment of the invention, the component includes at least one of a diamond window and an oil box.
[0042] Specifically, several components in a megawatt-class rotary tube are key components, such as the diamond window and oil box. The water-cooled circulation system has a corresponding water-cooled circulation branch for each component, and an electric heating module with precisely calibrated power parameters is connected in series on the water-cooled circulation branch corresponding to each component. The electric heating module is used to heat the cooling water in the water-cooled circulation branch.
[0043] The water-cooled circulation system in this embodiment of the invention includes water-cooled pipes, valves, pressure transmitters, flow transmitters, temperature transmitters, etc.
[0044] In one specific embodiment of the present invention, when the water-cooled circulation system is used for multiple components of a megawatt-class rotary tube, the water-cooled circulation system is as follows: Figure 1 As shown, the water-cooled piping system includes a supply water pipe, a return water pipe, and a flexible connecting hose. The cooling water flows sequentially through the main supply water pipe for primary flow guidance, then through the supply branch pipe for final branching, and finally through the flexible hose to the electric heating module. After heat exchange, the cooling medium is injected into the equipment end (diamond window, oil box) from the outlet of the electric heating module. After completing the heat load transfer, it is discharged from the outlet of the equipment end, flows along the return water branch pipe, and finally returns to the circulating cooling system through the main return water pipe, forming a closed-loop cooling circuit.
[0045] This piping architecture achieves stable transmission and heat exchange control of the cooling medium under complex operating conditions through a branch / combination topology design and stress compensation function of flexible connection components.
[0046] In this specific embodiment, the valve system consists of a ball valve assembly, a gate valve, and a drain valve. The ball valve assembly is located at the beginning of the water supply branch along the flow direction, the end of the water return branch along the flow direction, and the media inlet of the pressure transmitter assembly, configured to control the on / off operation of cooling water. The gate valve is integrated downstream of the ball valve assembly in the water supply branch, configured to regulate the flow rate and pressure parameters of the medium entering the equipment (diamond window, oil box). The drain valves are distributed at the end nodes of the water supply branch and the beginning nodes of the water return branch, configured to perform pipeline drainage for specific pipe sections.
[0047] This valve body layout achieves multiple functions of integrated cooling medium flow control, pressure regulation, and system venting through spatial topology optimization.
[0048] In this specific embodiment, the pressure transmitter includes a supply water pressure transmitter installed on the supply water branch and a return water pressure transmitter installed on the return water branch, which performs dynamic monitoring of the supply water pressure parameters and return water pressure parameters in the circulating water circuit.
[0049] In practice, the pressure transmitter assembly incorporates a physical quantity sensing module and a signal conversion module, which perform analog-to-digital conversion on the pressure physical quantity through the piezoresistive effect to generate a standardized electrical signal, which is then transmitted to the control system.
[0050] In this specific embodiment, the flow transmitter is installed on the water supply branch and adopts a turbine flow meter with a built-in turbine rotor assembly and photoelectric encoder. It is configured to realize high-precision dynamic measurement of fluid flow in the circulating water circuit through the linear coupling relationship between turbine speed and water medium velocity, and transmits the signal to the control system via electrical signal.
[0051] In this specific embodiment, the temperature sensing system includes a supply water temperature transmitter and a return water temperature transmitter. The supply water temperature transmitter is installed at the fluid transmission node of the supply water branch, and the return water temperature transmitter is installed at the heat exchange monitoring station of the return water branch, configured to perform accurate dynamic monitoring of the temperature parameters of the supply / return water medium in the circulating water circuit.
[0052] In practice, the temperature transmitter assembly incorporates a PT100 type platinum-based thin-film resistance sensing element, which converts the physical quantity of temperature into a quantity of resistance change through its wide temperature range linear response characteristics. After being converted into a voltage signal by a Wheatstone bridge, the signal conditioning circuit generates an electrical signal, which is then transmitted to the control system.
[0053] It should be noted that the embodiments of the present invention do not limit the specific structure of the water cooling circulation system, and other water cooling circulation systems can also be used.
[0054] The electric heating module in this embodiment of the invention employs a miniature electric heater with precisely calibrated power parameters. For example, the miniature electric heater has a compact structure with an axial extension length of 220 mm and a radial span of 70 mm. The miniature electric heater integrates a nickel-chromium alloy (Ni-Cr) resistance wire as the core heat source component, employing a metal tube-wrapped resistance heating mode, with a nominal power of 4 kW. The water inlet of the miniature electric heater is fluidly coupled to the water supply branch via a flexible hose assembly, and the water outlet is connected to the equipment terminal (diamond window, oil box) via the same flexible hose assembly, establishing a heat conduction link. This configuration is designed to apply steady-state heat loading to the cooling medium on the water supply side and directionally deliver it to the equipment terminal.
[0055] Figure 2 This is a flowchart of a microwave power measurement and verification method according to an embodiment of the present invention, as follows: Figure 2 As shown, microwave power measurement and verification methods may include:
[0056] S101, while controlling the electric heating module in the corresponding water-cooled circulation branch of each component to heat, obtain the flow rate, supply side temperature and return side temperature of the cooling water in the corresponding water-cooled circulation branch of each component, and calculate the real-time heat power value of the corresponding water-cooled circulation branch of each component.
[0057] S102, after determining the thermodynamic steady state of the water cooling circulation branch corresponding to each component based on the real-time heat power value of the water cooling circulation branch corresponding to each component, the real-time heat power value of the water cooling circulation branch corresponding to each component after reaching the thermodynamic steady state is recorded as the power peak value of each component.
[0058] S103 uses the standard power value of the electric heating module to verify the power peak value of each component, and after the verification is passed, cross-validates the power peak value of each component to verify the accuracy of the water cooling circulation system measurement.
[0059] This invention relates to an embodiment of a megawatt-level gyrotron by connecting an electric heating module in series in the water-cooled circulation branch corresponding to a key component. This electric heating module simulates the heating effect of a microwave source on the water-cooled pipeline, enabling power measurement and verification of the key component based on calorimetry principles.
[0060] Specifically, the electric heating modules in the corresponding water-cooled circulation branches of each component are activated by controlling the operation of these modules. A controllable heating mode can be used to control the electric heating modules to heat the cooling water in the supply water branch of the water-cooled circulation system. The heated medium (cooling water) is injected into the return water branch after heat conduction at the component equipment end. During this process, the flow rate, inlet water temperature, and return water temperature are acquired in real time from the flow transmitters on the corresponding water-cooled circulation branches of each component. Using relevant heat-work conversion equations, the real-time heat power value of each component's corresponding water-cooled circulation branch is calculated based on the cooling water flow rate, supply side temperature, and return side temperature.
[0061] The thermodynamic steady state of each component's corresponding water-cooled circulation branch is determined based on its real-time thermal power value. Once a component's corresponding water-cooled circulation branch is determined to have reached thermodynamic steady state, its real-time thermal power value is obtained, and this value is recorded as the component's power peak value. This process is repeated until the power peak values for each component are obtained.
[0062] The power peak values of each component are checked using the standard power value of the electric heating module, and cross-validation is performed on the power peak values of each component. If the relative error between the power peak value of the component and the standard power value is within a reasonable range, and there is no significant difference in the power peak values among the components, then it can be verified that the system for measuring the power of key components (diamond window, oil box) of the gyrotron has high measurement accuracy and can effectively characterize the true power absorbed by key components in the microwave system.
[0063] It should be noted that if there is a component power peak value that fails the verification and / or validation, the corresponding water cooling circulation branch of the component should be troubleshooted, and after the troubleshooting and repair, the microwave power measurement and verification method in the embodiment of the present invention should be used to continue to measure and verify the power.
[0064] This invention provides reliable metrological assurance for power monitoring of key components of the gyrotube by establishing a traceable power benchmark (standard electric power value of the electric heating module).
[0065] It should be noted that the embodiments of the present invention can utilize a single electric heating module, that is, sequentially connecting the electric heating module to the corresponding water-cooling circulation branch of each component to achieve power measurement and verification of the key components of the gyrotube. Alternatively, multiple electric heating modules can be used, that is, connecting electric heating modules to the water-cooling circulation branches corresponding to multiple components to achieve power measurement and verification of the key components of the gyrotube. The embodiments of the present invention do not limit the specific implementation method of connecting the electric heating modules to the water-cooling circulation branches.
[0066] This invention discloses a microwave power measurement and verification method. A miniature electric heating module with precisely calibrated power parameters is integrated in series into the water-cooled circulation branch of a key component of a gyrotron. The miniature electric heating module heats the cooling water through a controllable heating mode. After the water-cooled circulation branch reaches thermodynamic steady state, the flow rate, supply side temperature, and return side temperature of the cooling water are acquired. The thermal power value of each component corresponding to the water-cooled circulation branch is calculated using relevant heat-work conversion equations and recorded as the power peak value of each component. The standard electric power value of the electric heating module is used to verify the power peak value of each component, and cross-validation is performed after the verification is passed. If both verification and validation pass, it indicates that the power measurement system for the key components of the gyrotron (diamond window, oil box) has high measurement accuracy and can effectively characterize the true power absorbed by the key components in the microwave system.
[0067] In one embodiment of the present invention, such as Figure 3 As shown, before controlling the electric heating module in the corresponding water-cooling circulation branch of each component to perform heating, the microwave power measurement and verification method may also include:
[0068] S201, start the water cooling circulation system and stabilize the cooling water of the water cooling circulation system at the target temperature.
[0069] Specifically, the water-cooled circulation system is started, and the cooling water temperature of the system is stabilized at (11±0.5)℃ (target temperature). During startup, the valve configuration operations are performed sequentially as follows: first, the ball valve at the end of the return water branch is opened to unlock the return water channel; then, the ball valve at the beginning of the supply water branch is opened to establish the supply water path. Finally, the ball valve at the front end of the pressure transmitter is activated to complete the sensor link connection.
[0070] S202, adjust the water supply pressure and flow rate of each water-cooled circulation branch, control the water supply pressure of each water-cooled circulation branch within the target pressure range, and stabilize the flow rate of each water-cooled circulation branch at the target flow rate.
[0071] Specifically, by adjusting the shut-off valves in each water-cooled circulation branch, the water supply pressure of each component's corresponding water circuit is controlled within the target pressure range, while the flow rate of each component's corresponding water circuit is stabilized at the target flow rate.
[0072] It should be noted that the target pressure range and target flow rate differ for different components. Specifically, the target pressure range for the water circuit corresponding to the diamond window is below 3.5 bar. The target pressure range for the water circuit corresponding to the oil box is below 3 bar. The target flow rate for the water circuit corresponding to the diamond window is 0.45... The target flow rate for the water channel corresponding to the oil box is 0.4. .
[0073] In one specific embodiment of the present invention, such as Figure 4 As shown, calculating the real-time thermal power value of each component's corresponding water-cooled circulation branch can include:
[0074] S301, calculate the supply / return water temperature difference of each component's corresponding water cooling circulation branch based on the supply water temperature and return water temperature of each component's corresponding water cooling circulation branch.
[0075] S302 uses a heat power conversion equation to calculate the real-time heat power value of the water cooling circulation branch corresponding to each component based on the flow rate of the water cooling circulation branch and the temperature difference between the supply and return water sides.
[0076] Specifically, based on the supply and return water temperatures of the corresponding water-cooled circulation branches for each component, the supply / return water temperature difference of each component's corresponding water-cooled circulation branch is calculated. The heat power conversion equation is used: Based on the flow rate of each component's corresponding water-cooling circulation branch and the temperature difference between the supply and return water sides, the real-time thermal power value of the target water-cooling circulation system is calculated. This thermal power conversion equation... Indicates the thermal power value. Specific heat capacity of water (unit: J / (kg·℃)) This is the density of water (unit: kg / m3). For traffic, This refers to the temperature difference between the supply and return water sides.
[0077] The specific heat power conversion equations described above in this embodiment of the invention are constructed as follows:
[0078] During the heating process of the electric heating module, The increase in thermodynamic energy generated by the cooling medium flowing through the tested component over time is:
[0079] (1)
[0080] in, Specific heat capacity of water (unit: J / (kg·℃)) for Mass of cooling water flowing out within a time period (unit: kg); Temperature of the return water pipe (unit: °C). At the initial moment, The time it takes for cooling water to flow from the supply end to the return end of the tested component. Temperature of water supply pipeline (unit: °C).
[0081] During the calibration process, if the water temperature in the water supply pipeline remains constant, then .
[0082] Let the temperature change Then we have:
[0083] (2)
[0084] Let the cooling water flow rate be (unit: ),but , Density of water (unit: Then we have:
[0085] (3)
[0086] according to , for The average thermal power of water over time, combined with formula (3), yields: .
[0087] In one specific embodiment of the present invention, such as Figure 5 As shown, determining the thermodynamic steady state of each component's corresponding water-cooling circulation branch based on its real-time thermal power value can include:
[0088] S401, calculate the rate of change of the real-time heat power value of each component corresponding to the water-cooled circulation branch, and obtain the rate of change of heat power of each component corresponding to the water-cooled circulation branch.
[0089] S402, when the rate of change of thermal power of the water-cooled circulation branch corresponding to the component is less than the preset range, it is determined that the water-cooled circulation branch corresponding to the component has reached a thermodynamic steady state.
[0090] Specifically, the real-time thermal power value of each component's corresponding water-cooled circulation branch is monitored to determine whether the water-cooled circulation branch of each component has reached thermodynamic steady state.
[0091] In practice, the rate of change of the real-time heat power value of the water-cooled circulation branch corresponding to the component is calculated. When the rate of change is less than the preset range, it indicates that the real-time heat power value of the water-cooled circulation branch corresponding to the component is stable or fluctuates within a small range, that is, it has reached the peak value. At this time, it can be determined that the water-cooled circulation branch corresponding to the component has reached the thermodynamic steady state.
[0092] In one embodiment of the present invention, the microwave power measurement and verification method further includes:
[0093] When the water-cooling circulation branch corresponding to the component reaches thermodynamic steady state, the electric heating device in the water-cooling circulation branch corresponding to the component continues heating for a preset time and then stops heating.
[0094] Specifically, when it is determined that the water-cooling circulation branch corresponding to the component has reached thermodynamic steady state, the electric heating module in that branch continues heating for a preset time, such as 5 minutes, and then stops heating. It should be noted that this embodiment of the invention does not limit the preset time; the preset time can also be 3 minutes, 4 minutes, 6 minutes, etc. By controlling the electric heating module in that branch to continue heating for a preset time when it is determined that the water-cooling circulation branch corresponding to the component has reached thermodynamic steady state, a more stable real-time thermal power value, i.e., a power peak value, can be obtained.
[0095] In one specific embodiment of the present invention, verifying the power peak value of each component using the standard electric power value of the electric heating module may include:
[0096] Calculate the ratio of the difference between the power peak value and the standard power value of each component to the standard power value, and take the absolute value to obtain the first absolute value of the ratio for each component;
[0097] Determine whether the absolute value of the first ratio corresponding to each component is less than or equal to the first preset threshold.
[0098] If so, then the verification is confirmed to have passed;
[0099] If not, then the verification has failed.
[0100] Specifically, the power peak values of each component are compared and analyzed with the standard power value of the electric heating device. Specifically, the difference between the power peak value of each component and the standard power value is calculated. Calculate the differences Compared with standard power value ratio and take the absolute value Determine the absolute value of the first ratio corresponding to each component. Are all values less than or equal to the first preset threshold? If the absolute value of the first ratio corresponding to each component is... If all values are less than or equal to the first preset threshold, then the verification is deemed successful, and the power measurement system for each component can be determined to have passed the first-level verification. If there exists an absolute value of the first ratio corresponding to any component... If the value exceeds the first preset threshold, it is determined that the verification has failed, and troubleshooting can be performed on the water cooling circulation branch of the component that failed the verification.
[0101] In a specific example of the present invention, the first preset threshold may be 5%. It should be noted that the embodiments of the present invention do not limit the first preset threshold.
[0102] In one specific embodiment of the present invention, cross-validation of the power flat-top values of each component may include:
[0103] Calculate the ratio of the difference between the two power peak values of each component to the average power value, and take the absolute value to obtain multiple absolute values of the second ratio, where the average power value is the average power value of the power peak values of each component;
[0104] Determine whether the absolute value of each second ratio is less than or equal to the second preset threshold;
[0105] If so, then the verification is successful;
[0106] If not, then the verification failed.
[0107] Specifically, the difference between the power peak values of each component and the average power value are calculated. The ratio of .
[0108] For example, when measuring two components, namely the diamond window and the oil box, the power flat-top value of the diamond window is calculated. And oil box power flat top value The average value is used to obtain the average power. Calculate the power flat-top value of the diamond window. Power level with oil box The difference Calculate the difference. With average power ratio and take the absolute value Determine the absolute value of the second ratio. The test checks whether the absolute value of the second ratio is less than or equal to the second preset threshold. If the absolute value of the second ratio is less than or equal to the second preset threshold, the verification is considered successful, indicating that the diamond window and oil box power measurement system has passed the second-level calibration, and the water cooling circulation system is accurately measured. If the absolute value of the second ratio is greater than the second preset threshold, the verification is considered unsuccessful, indicating that the diamond window and oil box power measurement system has failed the second-level calibration, and the water cooling circulation system is inaccurate, requiring troubleshooting of the corresponding component's water cooling circulation branch.
[0109] In a specific example of the present invention, the second preset threshold may be 3%. It should be noted that the embodiments of the present invention do not limit the second preset threshold.
[0110] It should be noted that when taking the power peak value of each component for the above-mentioned verification and cross-validation, one or more of the corresponding power peak values of the component can be taken for the above-mentioned verification and cross-validation, or the average value of multiple power peak values of the component can be taken and recorded as the power peak value of the component for the above-mentioned verification and cross-validation.
[0111] The microwave power measurement and verification method in this embodiment of the invention can be used in water-cooled circulation systems with multiple MW-level gyrotube test platforms.
[0112] As a specific embodiment, such as Figure 6 As shown, in the water-cooled circulation system used for two MW-level gyrotube test platforms (Gyrotube Test Platform 1 and Gyrotube Test Platform 2), the cooling water flows sequentially through the main water supply pipe 1 for primary flow guidance, through the primary water supply branch pipe 2 for secondary flow guidance, and then through the secondary water supply branch pipe 3 for final branching. Finally, it is directionally delivered to the electric heating module 11 via the flexible hose 10. The cooling medium after heat exchange is injected into the equipment end (diamond window 12 of Platform 1, oil box 16 of Platform 1, diamond window 18 of Platform 2, and oil box 19 of Platform 2) from the outlet of the electric heating module 11. After completing the heat load transfer, it is discharged from the outlet of the equipment end, undergoes primary flow convergence along the secondary return water branch pipe 13, undergoes secondary flow convergence through the primary return water branch pipe 17, and finally returns to the circulating cooling system through the main return water pipe 20, forming a closed-loop circulating cooling circuit. The piping architecture of this water-cooled circulation system achieves stable transmission and heat exchange control of the cooling medium under complex operating conditions through multi-stage branch / combination topology design and stress compensation function of flexible connection components.
[0113] In this specific embodiment, ball valves 4 are respectively located at the beginning of the secondary water supply branch along the medium flow direction, the end of the secondary return water branch along the medium flow direction, and the medium inlet of the pressure transmitter assembly, configured to perform cooling water on / off control. A shut-off valve 5 is integrated downstream of the ball valve assembly in the secondary water supply branch, configured to regulate the flow rate and pressure parameters of the medium entering the equipment. Drain valves 9 are distributed at the end node of the secondary water supply branch and the beginning node of the secondary return water branch, configured to perform pipeline venting for specific pipe sections. This valve body layout achieves multiple functions of integrated cooling medium flow control, pressure regulation, and system venting through spatial topology optimization.
[0114] In this specific embodiment, the pressure transmitter includes a supply water pressure transmitter 6 installed on the secondary supply branch and a return water pressure transmitter 15 installed on the secondary return water branch, which dynamically monitor the supply and return water pressure parameters in the circulating water circuit. A supply water flow transmitter 7 is installed on the secondary supply branch and configured to achieve high-precision dynamic measurement of the fluid flow rate in the circulating water circuit through the linear coupling relationship between turbine speed and water medium velocity. A supply water temperature transmitter 8 is installed at the fluid transmission node of the secondary supply branch and configured to accurately and dynamically monitor the temperature parameters of the supply water medium in the circulating water circuit. A return water temperature transmitter 14 is installed at the heat exchange monitoring station of the secondary return water branch and configured to accurately and dynamically monitor the temperature parameters of the return water medium in the circulating water circuit.
[0115] In this specific embodiment, the water inlet of the electric heating module 11 is fluidly coupled to the secondary water supply branch via a flexible hose assembly, and the water outlet is connected to the equipment terminal via a flexible hose assembly to establish a heat conduction link. This is configured to apply steady-state heat loading to the cooling medium on the water supply side and deliver it to the equipment terminal in a directional manner.
[0116] Using the microwave power measurement and verification method of this invention, when measuring and verifying the power of the diamond window and oil box of the two MW-level gyrotubes, the water-cooling circulation system of the two MW-level gyrotube test platforms is started to stabilize the water temperature at (11±0.5)℃. Implementably, the valve configuration operations are performed sequentially: a) opening the ball valve at the end of the secondary return water branch to unlock the return water channel; b) opening the ball valve at the beginning of the secondary supply water branch to establish the supply water path; c) activating the ball valve at the front end of the pressure transmitter to complete the sensor link connection. The shut-off valves of each water path are adjusted to control the supply water pressure of the water paths corresponding to the diamond window and oil box to below 3.5 bar and 3 bar respectively, while simultaneously adjusting the flow rates of the water paths corresponding to the diamond window and oil box to 0.45 m³ / h and 0.4 m³ / h respectively, and keeping them stable. The electric heating modules on the four branches of the two test platforms were turned on to heat the medium in the secondary water supply branch. The heated medium was injected into the secondary return water branch after heat conduction through the equipment ends (diamond window, oil box). During this process, the flow transmitter, supply water temperature transmitter, and return water temperature transmitter monitored the flow rate, inlet water temperature, and return water temperature of the branch in real time, respectively, and transmitted the signals to the control system via cables. The control system calculated the real-time power of each key component (diamond window, oil box) using a pre-set power calculation formula. To observe the power changes of the diamond window and oil box in the control system, heating was continued for more than five minutes after the power stabilized or fluctuated within a small range (i.e., reaching a plateau value), and then heating was stopped. The standard electric power value of the electric heating module was then used. (4kW) is compared with the power peak value of key components. If it meets the requirements... Engineering tolerance range ( The component power flat-top value and the standard electric power value If the difference is found between the power measurement values of the diamond window and the oil box, the power measurement system of that component is deemed to have passed the first-level calibration. Further cross-validation is then performed: the relative deviations between the power values of the diamond window and the oil box are compared. If the deviations are satisfied... ( This refers to the power flat-top value of the diamond window. This is the power rating of the oil box. If the average value of the diamond window and the oil box power plate is used, then the system is deemed to have passed the second-level verification, completing the full-dimensional metrological verification of the measurement system.
[0117] In this embodiment of the invention, the verification of microwave power measurement is based on the principle of thermodynamic substitution. An electric heating module is used as the standard power input device instead of the microwave source. Equivalent heat loading is applied to the water-cooled circulation system of the key component of the gyrotube. Under steady-state heat exchange conditions, the cooling medium, heated by the electric heating module, flows through the measured components (diamond window, oil box), causing a continuous and stable temperature rise in the return water pipeline. Based on the law of conservation of energy in heat transfer, the actual thermal power value is calculated by quantifying the temperature rise parameters and fluid dynamic parameters of the cooling medium. This value is then compared with the calibrated power (standard electric power value) of the electric heating module to verify the measurement accuracy of the power measurement system.
[0118] During the verification process, it was set that all the output energy of the electric heating module was converted into the heat energy of the water. Within a certain time, the system reaches thermodynamic steady state, and the temperature of the return water pipe remains constant until it reaches its peak value. If T0 is a constant value, then the average thermal power of water is... It is a constant, approximately equal to the standard electric power value of the electric heating module. (4kW).
[0119] The embodiments of this invention have been practically applied. In the verification experiment of the power measurement system of the key components (diamond window and oil box) of the MW-level gyrotron in the CRAFT-ECRH (China Research Facility for Advanced Fusion Technology, Integrated Research Facility for Key Systems of Fusion Reactor Mainframe) test platform, the power measurement system of the diamond window and oil box was calibrated using the method of the embodiments of this invention, confirming that its performance indicators meet the design requirements. Figures 7(a), 7(b), 8(a), 8(b) and Figure 9 Statistical data curves for calibrating the power measurement system (Figure 7(a), Figure 7(b), Figure 8(a), Figure 8(b) and...) Figure 9 The horizontal axis represents time, and the vertical axis represents temperature (°C). Among them, Figure 7(a) shows the temperature change curve of diamond window #1, Figure 7(b) shows the temperature change curve of oil box #1, Figure 8(a) shows the temperature change curve of diamond window #2, and Figure 8(b) shows the temperature change curve of oil box #2. Figure 9 These are power variation curves for the diamond window and oil box of two MW-level gyrotron test rigs. It should be noted that... Figure 9 The curve on the left of the first row is the power change curve of the #1 diamond window, and the curve on the right of the first row is the power change curve of the #1 oil box. The curve on the left of the second row is the power change curve of the #2 diamond window, and the curve on the right of the second row is the power change curve of the #2 oil box.
[0120] Based on the data corresponding to each curve above, a table is drawn, as shown in Table 1 below.
[0121] Table 1. Verification data of power measurement system for two key MW-level gyrotron components.
[0122]
[0123] Note: The power calibration experiment was conducted under standard atmospheric pressure. The specific heat capacity C of water was taken as 4.2 kJ / (kg·℃), and the density ρ was taken as 1000 kg / m3.
[0124] As can be seen from Table 1, the power peak values of each key component were measured. Compared with the standard power value of the electric heating module (4kW) Data comparison shows that all meet the requirements. The engineering tolerance range, and the power between each component. They are approximately equal, satisfying the condition that they are equal. The measurement system was determined to have passed dual verification, thus completing the metrological verification.
[0125] This invention addresses the shortcomings of existing technologies by proposing a power measurement and verification method for key components (diamond window, oil box) of MW-level gyrocompasses. It simulates the heating effect of a microwave source on water-cooled piping by using an external micro-electric heating module, achieving dual verification of the power measurement system based on calorimetry principles. Compared to traditional solutions, this method utilizes a micro-electric heating module, which is easy to install and disassemble, effectively solving the problem of poor space adaptability for large verification equipment. Secondly, by connecting it in series to the water-cooled piping, it minimizes water flow disturbance, ensuring the reliability of water temperature measurement data. Furthermore, by optimizing the verification process, it shortens operation time and reduces the impact of environmental variables such as temperature and pressure on verification accuracy.
[0126] This invention configures high-precision flow transmitters and temperature transmitters in the water circuit, which can monitor the dynamic flow and temperature parameters of cooling water in real time and transmit the data to the control system for power calculation and curve plotting. It intuitively presents the power change trend of each component of the gyrotube, solves the problem that traditional power measurement requires repeated calibration of coefficient k and lacks a verification mechanism, and realizes the self-verification function of the measurement system.
[0127] The embodiments of the present invention construct a dual verification system, which can not only compare and verify the power of the electric heating module with the power detected by the key component power detection system, but also cross-compare and verify the power of each component. This composite verification mechanism greatly improves the reliability of the verification results and provides dual protection for the accurate measurement and safe operation of microwave power of MW-level gyrotrons.
[0128] The microwave power measurement verification method of this invention utilizes an external miniature electric heating module to simulate the heating effect of a microwave source on a water-cooled pipeline, achieving dual verification of the power measurement system based on the calorimetric principle. The miniature electric heating module is small in size, easy to install and disassemble, and its series connection to the water-cooled pipeline minimizes water flow disturbance, exhibiting high compatibility with MW-level rotary tube test benches. The verification process is short, avoiding the influence of environmental variables such as temperature and pressure on verification accuracy. The absence of a calibration coefficient k (the product of the specific heat capacity of water C and the cooling water flow rate F) simplifies the verification steps and reduces power measurement errors. A traceable verification system for the thermal parameter measurement of MW-level high-power microwave devices is established. It can be applied to the verification of power detection systems for microwave devices other than those with diamond windows and oil boxes.
[0129] This invention provides a computer-readable storage medium.
[0130] In this embodiment, a computer program is stored thereon. When the computer program is executed by the processor, it implements the microwave power measurement and verification method as described above.
[0131] This invention provides a controller.
[0132] In this embodiment, the controller may include a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, it implements the microwave power measurement and verification method described above.
[0133] Figure 10 This is a structural block diagram of the controller according to an embodiment of the present invention.
[0134] like Figure 10 As shown, the controller 500 includes a processor 501 and a memory 503. The processor 501 and the memory 503 are connected, for example, via a bus 502. Optionally, the controller 500 may also include a transceiver 504. It should be noted that in practical applications, the transceiver 504 is not limited to one, and the structure of the controller 500 does not constitute a limitation on the embodiments of the present invention.
[0135] Processor 501 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 501 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.
[0136] Bus 502 may include a pathway for transmitting information between the aforementioned components. Bus 502 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 502 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.
[0137] The memory 503 stores a computer program corresponding to the microwave power measurement and verification method of the above embodiments of the present invention. This computer program is controlled and executed by the processor 501. The processor 501 executes the computer program stored in the memory 503 to implement the content shown in the foregoing method embodiments. Figure 10 The controller 500 shown is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
[0138] The computer-readable storage medium and controller in the embodiments of the present invention adopt a dual verification mechanism, which eliminates the need for calibration coefficient k, simplifies the verification process, reduces power measurement errors, and significantly improves the reliability of the verification results, providing dual protection for the accurate measurement and safe operation of microwave power of MW-level gyrotrons.
[0139] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0140] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0141] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0142] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0143] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0144] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0145] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0146] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A microwave power measurement and verification method, characterized in that, A water-cooled circulation system for power measurement of multiple components of a megawatt-level gyrotube, wherein each component's water-cooled circulation branch is connected in series with an electric heating module, the method comprising: While controlling the electric heating module in the water-cooled circulation branch corresponding to each component to perform heating, the flow rate, supply side temperature and return side temperature of the cooling water in the water-cooled circulation branch corresponding to each component are obtained, and the real-time thermal power value of the water-cooled circulation branch corresponding to each component is calculated. After determining that the water cooling circulation branch corresponding to each component has reached thermodynamic steady state based on the real-time thermal power value of the water cooling circulation branch corresponding to each component, the real-time thermal power value of the water cooling circulation branch corresponding to each component after reaching thermodynamic steady state is recorded as the power peak value of each component. The power peak values of each component are checked using the standard power value of the electric heating module, and after the check is passed, the power peak values of each component are cross-validated to verify the accuracy of the measurement of the water cooling circulation system. The step of verifying the power peak value of each component using the standard power value of the electric heating module includes: Calculate the ratio of the difference between the power peak value of each component and the standard power value to the standard power value, and take the absolute value to obtain the first absolute value of the ratio corresponding to each component; Determine whether the absolute value of the first ratio corresponding to each component is less than or equal to a first preset threshold. If so, then the verification is confirmed to have passed; If not, then the verification has failed.
2. The microwave power measurement and verification method according to claim 1, characterized in that, Before the electric heating module in the corresponding water-cooled circulation branch of each of the aforementioned components is heated, the method further includes: Start the water cooling circulation system and stabilize the cooling water in the water cooling circulation system at the target temperature; Adjust the water supply pressure and flow rate of each of the water-cooled circulation branches to control the water supply pressure of each of the water-cooled circulation branches within the target pressure range, and stabilize the flow rate of each of the water-cooled circulation branches at the target flow rate.
3. The microwave power measurement and verification method according to claim 2, characterized in that, The calculation of the real-time thermal power value of the corresponding water-cooled circulation branch of each component includes: Calculate the supply / return water temperature difference of the water cooling circulation branch corresponding to each component based on the supply water temperature and return water temperature of each component. Using the heat power conversion equation, the real-time heat power value of the water cooling circulation branch corresponding to each component is calculated based on the flow rate and the temperature difference between the supply and return water sides.
4. The microwave power measurement and verification method according to claim 1, characterized in that, The step of determining whether each component's corresponding water-cooling circulation branch has reached thermodynamic steady state based on its real-time thermal power value includes: Calculate the rate of change of the real-time thermal power value of the water-cooled circulation branch corresponding to each component to obtain the rate of change of thermal power of the water-cooled circulation branch corresponding to each component. When the rate of change of thermal power of the water-cooled circulation branch corresponding to the component is less than a preset range, it is determined that the water-cooled circulation branch corresponding to the component has reached a thermodynamic steady state.
5. The microwave power measurement and verification method according to claim 4, characterized in that, The method further includes: When it is determined that the water-cooling circulation branch corresponding to the component has reached thermodynamic steady state, the electric heating device in the water-cooling circulation branch corresponding to the component is controlled to continue heating for a preset time and then stop heating.
6. The microwave power measurement and verification method according to claim 1, characterized in that, The cross-validation of the power flat-top values of each component includes: Calculate the ratio of the difference between the two power peak values of each component to the average power value, and take the absolute value to obtain multiple absolute values of the second ratio, wherein the average power value is the average power value of the power peak values of each component; Determine whether the absolute value of each of the second ratios is less than or equal to a second preset threshold; If so, then the verification is successful; If not, then the verification failed.
7. The microwave power measurement and verification method according to claim 1, characterized in that, The component includes at least one of a diamond window and an oil box.
8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the microwave power measurement and verification method as described in any one of claims 1-7.
9. A controller, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, it implements the microwave power measurement and verification method as described in any one of claims 1-7.
Citation Information
Patent Citations
Microwave high-power measuring method
CN103091549A
Calorimetric microwave millimeter wave medium-low power measuring system and method
CN110187168A