Performance test method for explosion-proof equipment in explosion dangerous place

Abstract

The invention relates to the technical field of performance testing of explosion-proof equipment in explosion dangerous places, and discloses a performance testing method for the explosion-proof equipment in the explosion dangerous places. By setting the test initial temperature and the target temperature, it is ensured that the performance of the explosion-proof equipment in the extreme cooling and high-temperature environment is truly reflected. The setting of the temperature jump amplitude and the energy conversion scalar directly correlates the temperature change and the energy conversion, and provides a clear numerical basis for the subsequent energy transfer calculation. By setting the total duration of temperature sudden change and the duration of linear jump, it is ensured that the temperature change is instantaneous and controllable, the test severity is improved, and the limit endurance capacity of the equipment can be evaluated in an extremely short time. By selecting the differential interval, accurate temperature rate calculation is ensured, the problems of insufficient data acquisition interval and inaccurate temperature rate calculation in the prior art are solved, and reliable data support is provided for subsequent evaluation.

Description

Technical Field

[0001] The invention relates to the technical field of performance testing of explosion-proof equipment used in explosion-hazardous places, and in particular to a performance testing method of explosion-proof equipment used in explosion-hazardous places. Background Art

[0002] Performance testing of explosion-proof equipment is a key link to ensure the safe operation of equipment in explosion-hazardous places. With the increasing attention paid to the safety performance of explosion-proof equipment in industries such as chemical, electric power and mining, it is particularly important to test the equipment's impact resistance, high temperature resistance and low temperature resistance in extreme environments. Most of the existing performance testing methods for explosion-proof equipment rely on standardized environmental simulations, and the test conditions are usually relatively stable temperature conditions or slowly changing temperature scenarios. However, in actual applications, equipment often encounters sudden temperature changes, especially in explosion-hazardous environments. The equipment must withstand drastic changes from extremely low temperatures to ultra-high temperatures in a very short time. Therefore, traditional testing methods cannot fully reflect the true performance of explosion-proof equipment in extreme environments.

[0003] Existing technologies mainly rely on the steady change of temperature for testing, while in actual explosion-hazardous places, the temperature drastic change process faced by explosion-proof equipment often occurs instantly. In this case, the equipment needs to quickly adapt to the extreme change from ultra-low temperature to high temperature, but the existing test methods fail to effectively simulate this process, resulting in inaccurate assessment of the equipment's ability to cope with sudden extreme temperature environments. In existing test methods, the temperature and energy transfer process are often estimated by empirical formulas, while data acquisition relies on intermittent measurements. This approach not only leads to poor consistency in test data, but also fails to capture the subtle response of the equipment in instantaneous temperature changes. The impact of small changes in the temperature jump process on the equipment is often ignored, and it is impossible to fully and accurately evaluate the performance of the equipment under extreme conditions. At present, many test methods do not give a detailed mathematical model for energy transfer during temperature transition, but are based on some simple assumptions and use imprecise qualitative analysis. This makes the test results often unable to accurately reflect the true energy transfer characteristics of the equipment during temperature drastic changes, especially in an instantaneous environment, where the energy transfer and accumulation process is complex and the dynamic changes are fast, and the existing energy transfer model fails to meet the needs of high-precision testing. For large explosion-proof equipment, the tests in the existing technology often fail to take into account the temperature differences in the internal space of the equipment. Most test methods fail to make fine divisions of the cavity space, and ignore the fact that the equipment may be affected by different temperatures and energies in different areas. Especially for those devices with complex shapes and multi-region structures, the test methods in the existing technology cannot accurately capture the temperature response of each part of the equipment, resulting in inaccurate test data. Existing test methods usually rely on a single time parameter, ignoring the different effects of each time stage on the equipment during the temperature jump process. The setting of the test cycle is too simplified, and often fails to fully record and analyze the various reaction stages of the equipment. At the same time, the data processing method is single, and a simple average or maximum value is usually used to evaluate the performance of the equipment. There is a lack of comprehensive quantification of the dynamic response of the equipment, resulting in the inability to accurately evaluate the true performance of the equipment under extreme conditions.

[0004] To this end, this case aims to propose a performance test method for explosion-proof equipment in explosion-hazardous places, providing an accurate, quantifiable and comprehensive performance test method for explosion-proof equipment to ensure that the equipment can maintain safe and reliable operation in the extreme temperature environment of explosion-hazardous places, which has important practical application value. Summary of the invention

[0005] The present invention provides a performance testing method for explosion-proof equipment in explosion-hazardous areas, which helps solve the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a performance testing method for explosion-proof equipment in explosion-hazardous areas, comprising: Set the initial test temperature to ; Set the test target temperature to ; Set the temperature ramp amplitude to ; Set the energy conversion scalar corresponding to the temperature jump to ; The total duration of the entire temperature change process is set to ; Set the actual duration of the temperature linear ramp to ; Select the differentiation interval as .

[0007] Optionally, it also includes the temperature conversion system structure and mathematical model construction, specifically: Set the temperature state function , specifically: ; in, is a universal time variable, in seconds, applicable to all time-related functions; is the temperature conversion start time, and ; Set the temperature change rate function, specifically: ; In the transition stage, the linear properties give: ; Output temperature , ;in, , is a small error term in the temperature control system.

[0008] Optionally, it also includes a bidirectional conversion trigger and smooth switching mechanism, specifically: Set the trigger function for: ; in, , indicating that the temperature arrive The dividing point Set the time smoothing function for: ; in, , is the smooth transition time interval; Set the smoothed temperature expression to .

[0009] Optionally, a partitioned cavity structure is also included, specifically: Take any vertex of the cavity as the origin, and take the long side of the cavity where the origin is located as axis, along The direction of the axis away from the origin is denoted by The positive direction of the axis; the wide side of the cavity where the origin is located is taken as axis, along The direction of the axis away from the origin is denoted by Axis positive direction; The axis coordinate range is , The axis coordinate range is ; Use origin, Axis and Axis establishes a Cartesian coordinate system; The cavity is a controlled space area for testing explosion-proof equipment, and the cavity has a length Meters and Width The rectangular space is meters long, and the temperature state in the cavity is low temperature at the initial moment. , indicating that the device is in a low temperature environment when the test starts; exist The axis positive direction sets the boundary position to rice; when When set to low temperature zone, the temperature in the area is fixed at ; when When set to high temperature zone, use smooth temperature expression Calculate the temperature.

[0010] Optionally, it also includes establishing a spatial energy release distribution model, specifically including: Set the temperature distribution indicator function for: ; The temperature distribution model is constructed as: ; Set the spatial energy release distribution function to: ; in, , is a fixed release coefficient.

[0011] Optionally, it also includes the energy transfer process and temperature transient calculation method, specifically: Setting the Temperature Transfer Function for: ; Set the temperature transient expression to: ; Set the temperature transient rate expression to: ; but, ; Set the position indicator function for: ; Using the Position Indicator Function Limit energy transfer to the high temperature area, specifically: .

[0012] Optionally, it also includes setting the test cycle, specifically: Set the test cycle to: ; in, Keep time for high temperature; Initial moment: When When the temperature in the whole cavity is ; Temperature jump start: Start to enter the smooth transition stage; Reach high temperature: When the high temperature state is Regional establishment; High temperature maintenance stage: The high temperature state is maintained until , completing a full test cycle.

[0013] Optionally, data collection is also included, specifically: Set up temperature integration recording function for: ; exist Range: ; exist Range: ; Calculated: ; exist Range: ; The overall integral value is: ; Set the sampling interval to ; Set the sampling time to ,in , ; Set the sampling and recording function to: ; All sampling points constitute a discrete sampling data set: ; Discretely sampled data sets Stored in the database.

[0014] The present invention has the following beneficial effects: 1. Build a multi-dimensional test index system, which includes not only static temperature data and temperature jump amplitude, but also introduces time parameters and and energy conversion scalars, forming a complete system for quantitatively describing extreme temperature changes. The newly defined index system directly maps the energy impact that the equipment can withstand, reflecting the direct relationship between temperature change and energy conversion; provides a unified and accurate test standard for the response of the equipment under instantaneous extreme conditions; ensures that the set values ​​are fixed and clear, avoiding the uncertainty caused by empirical parameters in traditional tests; provides rigorous and quantitative test parameters for the lack of safety of explosion-proof equipment under extreme temperature shocks; makes the test environment closer to the instantaneous temperature changes that the equipment may actually encounter, and enhances the reference and reliability of the test data; most existing technologies focus on testing under stable temperature or slow-changing conditions, while this solution uses temperature jumps and corresponding energy conversions in a very short time to solve the problem of insufficient rapid response capabilities of the test.

[0015] 2. Create your own segmented temperature state function , the temperature change is strictly divided into three stages: low temperature, linear jump and high temperature, and a deterministic mathematical expression is used to introduce the temperature change rate function To calculate the linear rate of temperature rise during the drastic change phase, ensuring that the overall energy transfer process can be quantified. Accurately describe the dynamic temperature change process to provide a precise mathematical basis for subsequent energy transfer and data acquisition; adopt a new mathematical expression method to avoid the drawbacks of traditional reliance on empirical parameters, making the temperature change process calculation more deterministic and reproducible. Make up for the problems of discontinuous temperature conversion process and imprecise data in traditional temperature testing, and ensure accurate expression of temperature at every moment during the drastic change process. Existing methods often use simple approximations or empirical formulas. This scheme introduces precise definitions and strict calculations in temperature segmentation and rate calculation, which has higher accuracy and scientificity.

[0016] 3. Create your own trigger function Clearly distinguish the critical point of transition between low temperature and high temperature states, independently designed time smoothing function Ensure that the temperature changes linearly and smoothly during the conversion process, generating a continuous temperature curve. Express the temperature smooth conversion process, eliminating the problems of data acquisition distortion and signal discontinuity caused by instantaneous jumps in traditional methods. Improve the errors and equipment shocks that may occur due to sharp temperature jumps during the test process, so that the temperature switching is both rapid and smooth, which is conducive to the capture and recording of the real response of the equipment; ensure data continuity and accurately evaluate the test results. It solves the problems of discontinuous temperature switching, broken data acquisition and large signal noise in traditional tests, and ensures the true reflection of the working status of the equipment in an emergency environment. The existing technology often uses simple switch control, while this solution realizes smooth temperature transition through a self-created smoothing function, making the system response smoother and more continuous, and improving the scientific nature of the test and data quality.

[0017] 4. In the standard Cartesian coordinate system, use Axis and The axis establishes a two-dimensional spatial description and finely partitions the cavity; defines the temperature distribution indicator function in detail , clearly divide the cavity into low temperature zone and high temperature zone; the temperature state in each zone is calculated using different but specific mathematical methods: the low temperature zone directly uses a fixed value ; In high temperature areas, the time smoothing function is used Modulate the temperature from arrive The change is reflected in the temperature distribution model . It solves the problem of inaccurate description of cavity space temperature distribution and confusion of temperature status in traditional tests; it provides precise partitioning and corresponding calculation models, so that the temperature and energy distribution have a clear correspondence in space, which helps to find possible weaknesses in local areas of the equipment. In view of the problem that different areas may be affected by different temperatures and have local weaknesses in explosion-proof equipment testing, this solution accurately partitions the interior of the cavity to ensure independent measurement and recording of temperature states and energy release in different areas. Traditional methods often only treat the cavity temperature uniformly as a whole and cannot finely distinguish temperature differences within the area; this solution greatly improves the resolution and practicality of the test through precisely defined spatial partitions, temperature distribution functions, and energy release expressions.

[0018] 5. Set the temperature transfer function It is used to describe the linear proportion of temperature rise within the temperature smooth transition range, and then through Explicitly express transient temperature; use direct integration method to calculate energy transfer and use position indicator function Limit energy transfer to the high temperature area to form a complete and closed energy transfer model . The energy change rate and transfer amount of the equipment during the instantaneous temperature change process can be accurately calculated, which is convenient for evaluating the energy tolerance and release capacity of explosion-proof equipment. It solves the uncertainty problem of the difficulty in accurately describing the instantaneous temperature change rate and energy transfer in traditional temperature transfer calculations, ensuring that the test data has a high signal-to-noise ratio and scientific basis. Existing technologies usually rely on empirical models or nonlinear weight parameters. This solution uses a new and self-created integral and derivative calculation method to make the energy transfer calculation more intuitive and accurate, suitable for dynamic response testing in a very short time.

[0019] 6. Designed a complete test cycle , clearly divide the temperature jump and high temperature holding stages to form a self-consistent closed-loop test process; use fixed discrete sampling intervals Constructing a continuous dataset , by temperature integration recording function Accurately quantify the temperature over the entire cycle. Ensure the continuity and accuracy of temperature data throughout the test process, and provide detailed data for the dynamic response of explosion-proof equipment under extreme environments; discrete sampling methods ensure simple data processing, accurate results, and easy subsequent multi-dimensional data analysis. It solves the problems of non-fixed data sampling intervals, missing or discontinuous data in traditional tests, making the test results more convincing and comparable, and facilitating equipment safety assessments. Existing sampling methods may have problems with insufficient sampling rate or data segmentation interruptions, while this solution ensures detailed recording and repeatability of data over the entire cycle through high-frequency sampling and complete integration methods, significantly improving the quality of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0021] 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.

[0022] Example, see Figure 1 , a performance test method for explosion-proof equipment in explosion-hazardous areas, comprising: Set the initial test temperature to , indicating the temperature state of explosion-proof equipment in an extreme cooling environment during testing; Set the test target temperature to , indicating the temperature state of the equipment after being subjected to extreme high temperature shock; Set the temperature ramp amplitude to , used as the basic value for subsequent energy conversion and temperature transfer calculations; Set the energy conversion scalar corresponding to the temperature jump to , which means the constant value equivalent to energy conversion during the temperature drastic change; The total duration of the entire temperature change process is set to , it is stipulated that the temperature conversion should be completed in a very short time to test the equipment's ability to respond to instantaneous extreme environments; Set the actual duration of the temperature linear ramp to , limiting the time of the temperature linear rise phase to ensure that the transformation process has clear and controllable dynamic characteristics; Select the differentiation interval as , ensuring accurate temperature rate calculation; the constructed index system not only defines temperature and time parameters, but also introduces energy conversion scalar ; Multi-dimensional indicators ensure that the explosion-proof equipment is tested for its structure and safety performance during instantaneous extreme energy freezing and melting.

[0023] By setting the initial test temperature and target temperature, the explosion-proof equipment test is ensured to be carried out in extreme cooling and high temperature environments, truly reflecting the actual performance of the equipment under extreme temperature conditions. This step solves the problem that traditional test methods can only simulate slow temperature changes, so that the equipment can be effectively tested under instantaneous extreme temperature shocks. Secondly, the setting of the temperature jump amplitude and the energy conversion scalar establishes a direct relationship between temperature change and energy conversion, provides a clear numerical basis for subsequent energy transfer calculations, and avoids the shortcomings of vague and empirical energy transfer calculations in existing methods. Through this setting, the scientificity and accuracy of the energy transfer process are ensured. The setting of the total duration of temperature drastic changes and the duration of temperature linear jumps further ensures the instantaneousness and controllability of temperature changes, greatly improves the severity of test conditions, and enables the extreme tolerance of the equipment to be truly tested in a very short time. This solves the problem that the traditional method cannot accurately evaluate the reaction speed of the equipment due to too slow temperature changes, and ensures a comprehensive evaluation of the equipment response time during the test process. Finally, by selecting the differential interval, the accuracy of the temperature rate calculation is ensured. This setting solves the problem of insufficient data collection intervals and inaccurate temperature change rate calculation in the prior art, making the data of the entire test process more continuous and accurate, and providing a reliable basis for subsequent equipment evaluation. In summary, this solution makes up for the shortcomings of traditional testing methods through a series of precise settings, making the performance test of explosion-proof equipment in extreme environments more comprehensive and accurate, thereby improving the safety and reliability of the equipment.

[0024] It also includes the temperature conversion system structure and mathematical model construction, specifically: Set the temperature state function , specifically: ; describes the temperature over time The change of temperature is divided into three stages: initial low temperature, linear jump, and high temperature stability, ensuring that the temperature data is strictly calculated according to the predetermined formula in each stage; in, It is a universal time variable, with the unit of seconds, applicable to all time-related functions and serves as the independent variable of the dynamic process; is the temperature conversion start time, and ; Calibrate the starting point of the temperature rise curve; Set the temperature change rate function, specifically: ; Calculate the temperature change per unit time, especially provide a fixed rate during the temperature jump stage , ensuring accurate energy transfer calculations; In the transition stage, the linear properties give: ; Output temperature , ;in, , is a small error term in the temperature control system, As the actual output temperature, ensure that the temperature state received by the device is exactly the same as the design target.

[0025] By setting the temperature state function, the temperature change rate function and the output temperature function, this scheme can accurately describe the dynamic change of temperature during the entire test process. Especially in the temperature drastic change stage, all temperature data are strictly calculated according to the predetermined formula to ensure the continuity, controllability and accuracy of the temperature during the test. First, the setting of the temperature state function divides the temperature change into three stages: initial low temperature, linear jump and high temperature stability. This staged setting solves the problem that the traditional test method fails to accurately simulate the instantaneous temperature jump process. By clearly dividing each stage, the temperature change process can be accurately controlled so that the temperature change in each stage meets the actual test requirements, avoiding the situation where the temperature is discontinuous or the transition is not smooth during the conversion process. Through this step, the test can more truly reflect the response characteristics of the device in extreme environments. Secondly, setting the temperature change rate function, especially in the temperature jump stage, ensures the accurate calculation of the temperature change rate per unit time, especially the fixed rate during the drastic change process. This setting effectively solves the inaccuracy in calculating the temperature change rate in the prior art and avoids the error caused by the inaccurate temperature change rate during the energy transfer calculation. In this way, it can ensure that the energy transfer calculation during the temperature jump process is more accurate and the test results are more reliable. Finally, the setting of the output temperature function combines the small error term in the temperature control system , ensuring that the actual output temperature is completely consistent with the design target temperature. Through this step, the error problem caused by insufficient equipment control accuracy in the test is eliminated, ensuring that the temperature state received by the equipment is completely consistent with the design target. This not only improves the test accuracy, but also enhances the credibility of the equipment performance evaluation. In summary, the above steps solve the problems of inaccurate temperature control and discontinuous data collection in the existing test methods by ensuring the precise control and accurate calculation of the temperature change process, and effectively improve the accuracy and reliability of the test results. This has important practical significance for the safety assessment of explosion-proof equipment, and can provide a more scientific and reliable basis for the performance of the equipment in actual applications.

[0026] It also includes bidirectional conversion triggering and smooth switching mechanisms, specifically: Set the trigger function for: ; Achieve temperature state The switch switches at the same time, clearly distinguishing the instantaneous states of low temperature and high temperature startup; in, , indicating that the temperature arrive Determine the demarcation point of the temperature switching process to trigger the state transition between the low temperature zone and the high temperature zone; Set the time smoothing function for: ; During the temperature switching process, the temperature value changes from Smooth transition to ,The key is to eliminate the discontinuity problem caused by mutation and ensure the linear change of dynamic transition; in, , is the smooth transition time interval, which is used for smoothing the temperature switching process; define the linear smoothing interval to ensure a smooth transition from low temperature to high temperature and eliminate discontinuous jumps; Set the smoothed temperature expression to ; Provide continuous and smooth temperature calculation results during temperature transition for equipment status testing and subsequent energy calculation; make sure The temperature transitions continuously and smoothly within seconds.

[0027] By setting a bidirectional conversion trigger function, a time smoothing function, and a smooth temperature expression, this solution can effectively achieve a smooth switching of temperature states, ensuring that the device does not produce mutations or discontinuities during extreme temperature changes, thereby improving the accuracy of test results and the reliability of device performance. First, by setting a trigger function to clarify the switching moment from the low temperature zone to the high temperature zone, this step effectively solves the problem of unclear temperature state switching and transition in the prior art. The trigger function can accurately calibrate the demarcation point of the temperature jump, ensuring that the temperature changes from low temperature to high temperature at the appropriate time. Switch to . This setting avoids the test instability problem caused by the abrupt temperature change in the traditional method, and provides a stable foundation for subsequent temperature control and energy calculation. Secondly, the time smoothing function is set to achieve a linear and smooth transition when the temperature transitions from low temperature to high temperature. This design greatly solves the problem of sudden changes in the temperature switching process and ensures that the device will not be affected by discontinuous jumps during the temperature change process. In the traditional method, the rapid change of the temperature state often causes the data to oscillate, affecting the real response of the device. Through the time smoothing function, we can keep the temperature in a smooth transition throughout the switching process, avoiding the error in the device performance evaluation caused by the temperature jump process. In addition, the setting of the smooth temperature expression further optimizes the temperature transition process, so that the temperature change in the smooth transition interval can provide continuous and gapless data. This not only improves the accuracy of the device response evaluation under extreme conditions, but also provides reliable and continuous data for subsequent energy transfer and temperature calculation. By ensuring a smooth temperature transition, the error caused by jumps in traditional tests is avoided, ensuring the high reliability of the test results. In summary, this solution solves the problems of sudden changes and data discontinuity caused by drastic temperature changes in traditional methods by accurately controlling the temperature change process, especially the smooth transition of temperature switching, and ensures that the test process of explosion-proof equipment in extreme environments is more scientific and accurate. This series of improvements not only improves the accuracy of performance evaluation of equipment under extreme conditions, but also enhances the safety and stability of explosion-proof equipment in actual use.

[0028] It also includes a partitioned cavity structure, specifically: Take any vertex of the cavity as the origin, and take the long side of the cavity where the origin is located as axis, along The direction of the axis away from the origin is denoted by The positive direction of the axis; the wide side of the cavity where the origin is located is taken as axis, along The direction of the axis away from the origin is denoted by Axis positive direction; The axis coordinate range is , The axis coordinate range is ; Use origin, Axis and Axis establishes a Cartesian coordinate system; The cavity is a controlled space area for testing explosion-proof equipment, and the cavity has a length Meters and Width The rectangular space is meters long, and the temperature state in the cavity is low temperature at the initial moment. , indicating that the device is in a low temperature environment when the test starts; exist The axis positive direction sets the boundary position to rice; when When set to low temperature zone, the temperature in the area is fixed at ; when When set to high temperature zone, use smooth temperature expression Calculate the temperature.

[0029] In order to realize physical partition control, this solution is in the cavity The regional electromagnetic energy field isolation module is provided, and its implementation scheme includes: Module principle: Using high-frequency nonlinear microwave pulses and controlled ion beams, A short-term heat-insulating area is created nearby; Working steps: about 0.001 seconds before the temperature jump, the module is activated by a dedicated controller; the module The area generates an instantaneous heat insulation barrier to prevent the local high temperature energy in the high temperature area from diffusing to the low temperature area; the barrier continues to work during the entire temperature jump and high temperature maintenance period, lasting at least 0.015 seconds, ensuring the temperature in the low temperature area It is stable for a long time, while the high temperature area gradually heats up according to a predetermined function.

[0030] The use of this module ensures that despite the intense molecular thermal diffusion in the cavity, the high-temperature zone and the low-temperature zone can still maintain a significant temperature difference, thereby achieving the purpose of separately regulating the high-temperature zone.

[0031] By setting up a partitioned cavity structure and using a Cartesian coordinate system for spatial division, this solution effectively solves the problems of uneven temperature distribution in the cavity and unclear division of temperature change areas in the prior art, ensuring that the temperature response of explosion-proof equipment in different areas can be accurately tested, thereby improving the accuracy and reliability of equipment performance evaluation. First, by obtaining any vertex of the cavity as the origin, and using the long side and wide side of the cavity where the origin is located as Axis and Axis, a Cartesian coordinate system is clearly established. This step solves the problem of unclear spatial division of the cavity in the prior art. The establishment of the Cartesian coordinate system enables the temperature distribution of each area inside the cavity to be clearly coordinated and digitized, providing an accurate spatial reference for subsequent temperature calculations. Through this step, the temperature and energy transfer process is no longer abstract, but can be accurately calculated based on the spatial coordinates, thus avoiding the temperature calculation deviation caused by the lack of a coordinate system in the traditional method. Secondly, the dividing position is set in the positive direction of the axis, and the specific boundaries of the low-temperature zone and the high-temperature zone are defined, ensuring that the temperature states of the low-temperature zone and the high-temperature zone are clear during the test, avoiding the appearance of gray areas during the temperature transition process. In the low-temperature zone, the temperature in the area is fixed to , while in the high temperature zone, the temperature is calculated by a smooth temperature expression. This design effectively solves the problem of the inability to accurately divide the temperature zone in the prior art, ensures that the temperature changes in the high and low temperature zones meet the actual test requirements, and makes the test data more comparable and accurate between different zones. By setting clear boundary positions and regional temperature control, this solution ensures that the temperature changes of the equipment in different zones can be independently calculated and analyzed. This refined partition design can effectively simulate the different temperature zones that the equipment may encounter in actual applications, avoiding the test errors caused by ignoring regional differences in the prior art. In addition, the application of smooth temperature expressions makes the transition of temperature from the low temperature zone to the high temperature zone smoother, further improves the consistency of the test data, and avoids errors caused by temperature mutations. In summary, this solution solves the problems of unclear temperature distribution in the cavity and fuzzy regional division in the traditional test method through precise spatial partition design and temperature state division. Through this method, the temperature response of explosion-proof equipment in different zones is comprehensively and accurately evaluated, thereby improving the reliability of the test and the safety of the equipment, and providing a more real and scientific basis for the performance of the equipment in extreme temperature environments.

[0032] It also includes the establishment of a spatial energy release distribution model, including: Set the temperature distribution indicator function for: ; Clearly divide the cavity into two areas; The temperature distribution model is constructed as: ; Calculate the temperature state of the two regions in the cavity respectively. In the low temperature region, due to , the temperature calculation result is always ; In the high temperature area, according to the time smoothing function Depend on Gradient to ; Set the spatial energy release distribution function to: ; in, , is a fixed release coefficient; this formula clearly stipulates that in the low temperature zone, the energy release and Correspondingly, in the high temperature zone, energy release changes linearly with increasing temperature.

[0033] By establishing a spatial energy release distribution model and combining it with the temperature distribution indicator function and the temperature distribution model, this solution effectively solves the problems of unclear temperature and energy distribution in the cavity and inaccurate calculation of regional energy release in the prior art. The design of this model ensures that the energy transfer and release process of the equipment in different temperature zones can be accurately calculated, thereby improving the scientificity and accuracy of the test. First, a temperature distribution indicator function is set to clearly divide the cavity into two regions, a low temperature zone and a high temperature zone, thereby solving the problem that the temperature changes in different regions of the cavity are not accurately described in traditional methods. Through this step, the temperature changes in the cavity are clearly divided in space. In the low temperature zone, the temperature is constant. In the high temperature zone, the temperature gradually changes from Gradient to This accurate division of temperature changes ensures the accurate distribution of temperature states in the entire cavity. Secondly, a temperature distribution model is constructed, through which the temperature states of the two regions in the cavity are calculated separately, avoiding the defect of inaccurate temperature zone calculation in the prior art. By clarifying the regional division and change law of temperature, in the low temperature zone, the temperature calculation result is always In the high temperature zone, the temperature changes smoothly according to the time function to This process is more consistent with the actual reaction of the device in extreme environment, making the temperature distribution model more accurate and realistic. Furthermore, by setting the spatial energy release distribution function and combining the temperature change, the energy release in different areas of the cavity can be calculated. In the low temperature area, the energy release remains constant, which is consistent with the low temperature state. Correspondingly, in the high temperature zone, energy release changes linearly with the increase in temperature, fully considering the direct impact of temperature change on energy transfer. This design effectively solves the problem of ambiguous correlation between temperature and energy release in traditional methods, ensures that the energy release process is closely related to temperature changes, and can accurately reflect the energy response of the equipment in different temperature zones. Through these steps, this solution successfully eliminates the problems of inaccurate energy distribution calculation and unclear temperature zone division in the prior art, ensuring that the relationship between temperature and energy release is accurately quantified and recorded during the test. It further improves the reliability of test data and provides a more accurate and scientific basis for the performance evaluation of explosion-proof equipment in extreme environments. These improvements make the test process more realistic and accurate, and can comprehensively evaluate the safety and stability of the equipment in different temperature environments.

[0034] It also includes the energy transfer process and temperature transient calculation method, specifically: Setting the Temperature Transfer Function for: ; In the linear smooth transition time period, the temperature changes from Go to changes in proportion; Set the temperature transient expression to: ; Directly represents the linear growth of temperature over time within the smoothing interval; ensure that hour, ;when hour, ; Set the temperature transient rate expression to: ; Describes the rate of change of temperature during the transition phase, which serves as a direct basis for the energy transfer rate; but, ; Set the position indicator function for: ; Used to combine spatial information, apply temperature jump calculation in high temperature area, and keep the temperature constant in low temperature area ; Using the Position Indicator Function Limit energy transfer to the high temperature area, specifically: ;when When, due to , the device temperature is maintained ;and When the temperature is Transient changes are performed to complete energy transfer.

[0035] By setting the temperature transfer function, temperature transient expression, temperature transient rate expression and position indication function, this solution can accurately describe the temperature change and energy transfer process during the temperature jump process, ensuring that the response of the device in an extreme temperature environment can be accurately evaluated. First, by setting the temperature transfer function, it is possible to describe the temperature change from arrive This setting solves the problem of too abrupt or discontinuous temperature jumps in the existing technology, ensuring that the temperature change process presents a linear growth in the smooth jump stage, avoiding the instability caused by mutations. In this way, the temperature change conforms to the response of the equipment under rapid temperature changes in the actual environment, thus providing a more scientific temperature simulation. Secondly, set the temperature transient expression, through the formula It accurately describes the linear growth of temperature over time in a smooth range, ensuring that the device responds more realistically during temperature jumps. By setting the upper and lower limits of temperature transients, the temperature can be adjusted over time. arrive The temperature transient rate expression is set to be continuous linear change, avoiding the discontinuity or uneven transition of the temperature in the traditional method. It ensures that the device can maintain a stable response to the temperature change at every moment. , which can describe the speed of temperature change in the transition phase. This setting solves the problem of inaccurate temperature change rate calculation in the prior art and provides an accurate basis for subsequent energy transfer calculation. By ensuring the accurate calculation of the temperature change rate, the accuracy of the energy transfer process can be ensured, avoiding energy calculation deviations caused by temperature rate estimation errors. Finally, set the position indication function , used to combine spatial information to ensure that the temperature jump is only applied in the high temperature area, while the temperature is kept constant in the low temperature area. . This design effectively solves the problem in the prior art that the temperature zone cannot be accurately divided, and avoids the error caused by unclear zone division during the temperature jump calculation process. By limiting the energy transfer to the high temperature area, the temperature changes transiently in the high temperature area according to the smooth temperature expression, while remaining unchanged in the low temperature area, thereby ensuring the scientificity and accuracy of the energy transfer process. In summary, the above settings solve the problems of temperature discontinuity and inaccurate energy calculation in the prior art by precisely controlling the temperature jump process, transient rate and energy transfer. Through these steps, the temperature and energy changes during the test process can be more in line with the equipment response in the actual environment, making the test results more scientific and reliable, and providing a more accurate basis for the performance evaluation of explosion-proof equipment in extreme temperature environments. This series of improvements significantly improves the accuracy of the test data and ensures the safety and stability of the equipment in actual applications.

[0036] It also includes setting up the test cycle, specifically: Set the test cycle to: ;Specify a complete test process, including temperature jump and high temperature holding stage; in, Keep time for high temperature; Initial moment: When When the temperature in the whole cavity is ; Temperature jump start: Start to enter the smooth transition stage; Reach high temperature: When the high temperature state is Regional establishment; High temperature maintenance stage: The high temperature state is maintained until , completing a full test cycle.

[0037] By setting the test cycle and specifying the complete test process, including the temperature jump and high temperature holding stages, this solution effectively solves the problems of inaccurate test cycle design and unclear temperature change stage division in the prior art. The specific cycle setting ensures that the performance test of explosion-proof equipment in extreme temperature environments is more scientific and systematic, thereby improving the accuracy and reliability of the test results. First, by setting the test cycle and clearly specifying each stage of the test process, temperature jump and high temperature holding, a time frame is provided for the entire test process. This step solves the problem of overly simple or incomplete test cycle settings in the prior art. Traditional methods usually set the test cycle to a fixed duration, ignoring the different effects of different temperature stages on the equipment, resulting in the test results being unable to fully reflect the dynamic response of the equipment in a complex environment. By setting the test cycle in stages, the temperature changes that the equipment may encounter in actual work can be more accurately simulated. Secondly, the high temperature holding time is specified to ensure that the equipment can maintain high temperature for a specified time after reaching the high temperature state. This design effectively solves the problem of unstable maintenance of high temperature state during testing in the prior art and failure to fully evaluate the long-term tolerance of the equipment in a high temperature environment. The high temperature holding stage ensures that the equipment can fully test its heat resistance and stability under high temperature conditions after experiencing a temperature jump, avoiding distortion of test results caused by too short a test time or uneven temperature changes. By setting the initial moment, determining the start time of the temperature jump, and the time point of establishing the high temperature state, this scheme ensures the order and standardization of the test process, avoiding the problems of unclear test process and unclear time nodes in the existing methods. These settings make the test process more rigorous and systematic, thereby improving the scientific nature of the test. Finally, the end time of the high temperature holding stage is set to ensure that the high temperature state can continue until the end of the specified test cycle, preventing the failure to fully test the performance of the equipment due to too short a test time. By ensuring the continuation of the high temperature state, the test can comprehensively evaluate the stability of the equipment under long-term high temperature conditions, avoiding errors caused by the equipment not being completely stable at the end of the test. In summary, this scheme solves the problems of incomplete test cycle setting and unclear division of temperature change stages in the prior art by setting a clear test cycle, dividing the temperature jump and high temperature holding stages, and clarifying the time nodes of each stage. This precise cycle setting ensures that the response of the equipment under extreme temperature changes can be fully and accurately evaluated, providing reliable and scientific data support for the performance of explosion-proof equipment in extreme environments. This series of improvements significantly improves the accuracy and reliability of the test, ensuring the safety and durability of the equipment in actual applications.

[0038] It also includes data collection, specifically: Set up temperature integration recording function for: ; Used to record the temperature integral value during the entire test cycle, and segmented calculation to ensure data integrity and facilitate subsequent result analysis; exist Range: ; exist Range: ; Calculated: ; exist Range: ; The overall integral value is: ; Set the sampling interval to ; Specify the time step of discrete sampling to ensure data sampling accuracy and continuity; Set the sampling time to ,in , ; As a time stamp for each discrete data sampling point; Set the sampling and recording function to: ; Used to record the temperature of each sampling point multiplied by the sampling interval to form a discrete data set; All sampling points constitute a discrete sampling data set: ; Ensure that the temperature change data during the entire test cycle is collected completely, continuously and accurately for subsequent data analysis and verification; Discretely sampled data sets Stored in the database.

[0039] By setting the temperature integral recording function, setting the sampling interval and sampling time, and constructing a discrete sampling data set, this scheme can ensure the integrity, continuity and accuracy of the temperature data throughout the test cycle, thereby providing reliable data support for subsequent equipment performance analysis. First, by setting the temperature integral recording function, the temperature integral value within the entire test cycle is calculated in segments to ensure data integrity. This step solves the problem of data omission or discontinuity caused by too long or too short data acquisition cycles in the prior art. Traditional methods usually rely only on a single instantaneous temperature record, which cannot reflect in detail the changes of the equipment at every moment during the temperature drastic change process. Through the temperature integral recording function, it can ensure that the temperature change process of each stage is accurately recorded, and provide reliable temperature history data for subsequent data analysis. Secondly, by setting the sampling interval and sampling time, this scheme ensures the accuracy and continuity of data sampling. The sampling interval is set to a fixed time step to ensure that the temperature changes at each time point in the entire test cycle can be accurately captured. This setting solves the problems of unstable sampling frequency and uneven data intervals in the prior art, so that the temperature change process can be discretely represented with high precision. Through fine time step control, the accurate recording of temperature change details can be ensured, avoiding data distortion caused by insufficient sampling. By setting the sampling recording function, the product of the temperature and time interval of each sampling point is recorded to form a discrete data set. This operation ensures that each data point corresponds to the precise mark of time, so that the temperature changes during the test process can be fully and accurately reflected. In traditional methods, data recording often omits temperature information at critical moments or fails to accurately mark time points, resulting in discontinuous data and inability to conduct effective analysis. Through this precise sampling method, this solution can ensure the high integrity and accuracy of the test data. Finally, by forming a discrete sampling data set from all sampling points and storing it in a database, the complete collection and long-term storage of temperature data throughout the test cycle are ensured. This step solves the problem of irregular data storage and management in the prior art, ensuring that the data can not only be used immediately, but also provide reliable support for subsequent analysis and verification. In summary, by accurately setting the sampling interval, sampling time and recording function, the complete collection and high-precision recording of temperature data during the test cycle are ensured, solving the problems of discontinuous data and insufficient precision in traditional methods. This series of improvements not only improves the accuracy and continuity of data collection, but also provides a reliable data basis for subsequent performance analysis and equipment evaluation, significantly improving the credibility and scientific nature of the test results.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A performance testing method for explosion-proof equipment in explosion-hazardous areas, characterized in that: include: Set the initial test temperature to ; Set the test target temperature to ; Set the temperature ramp amplitude to ; Set the energy conversion scalar corresponding to the temperature jump to ; The total duration of the entire temperature change process is set to ; Set the actual duration of the temperature linear ramp to ; Select the differentiation interval as .

2. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 1, characterized in that: It also includes the temperature conversion system structure and mathematical model construction, specifically: Set the temperature state function , specifically: ； in, is a universal time variable, in seconds, applicable to all time-related functions; is the temperature conversion start time, and ; Set the temperature change rate function, specifically: ; In the transition stage, the linear properties give: ； Output temperature , ;in, , is a small error term in the temperature control system.

3. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 2, characterized in that: It also includes bidirectional conversion triggering and smooth switching mechanisms, specifically: Set the trigger function for: ； in, , indicating that the temperature arrive The dividing point Set the time smoothing function for: ； in, , is the smooth transition time interval; Set the smoothed temperature expression to .

4. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 3 is characterized in that: It also includes a partitioned cavity structure, specifically: Take any vertex of the cavity as the origin, and take the long side of the cavity where the origin is located as axis, will be along The direction of the axis away from the origin is denoted by The positive direction of the axis; the wide side of the cavity where the origin is located is taken as axis, will be along The direction of the axis away from the origin is denoted by Axis positive direction; The axis coordinate range is , The axis coordinate range is ; Use origin, Axis and Axes establish a Cartesian coordinate system; The cavity is a controlled space area for testing explosion-proof equipment, and the cavity has a length Meters and Width The rectangular space is meters long, and the temperature state in the cavity is low temperature at the initial moment. , indicating that the device is in a low temperature environment when the test starts; exist The axis positive direction sets the boundary position to rice; when When set to low temperature zone, the temperature in the area is fixed at ; when When set to high temperature zone, use smooth temperature expression Calculate the temperature.

5. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 4 is characterized in that: It also includes the establishment of a spatial energy release distribution model, including: Set the temperature distribution indicator function for: ； The temperature distribution model is constructed as: ; Set the spatial energy release distribution function to: ; in, , is a fixed release coefficient.

6. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 5, characterized in that: It also includes the energy transfer process and temperature transient calculation method, specifically: Setting the Temperature Transfer Function for: ； Set the temperature transient expression to: ; Set the temperature transient rate expression to: ; but, ; Set the position indicator function for: ； Using the Position Indicator Function Limit energy transfer to the high temperature area, specifically: 。 7. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 6, characterized in that: It also includes setting up the test cycle, specifically: Set the test cycle to: ; in, Keep time for high temperature; Initial moment: When When the temperature in the whole cavity is ; Temperature jump start: Start to enter the smooth transition stage; Reach high temperature: When the high temperature state is Regional establishment; High temperature maintenance stage: The high temperature state is maintained until , completing a full test cycle.

8. The performance testing method for explosion-proof equipment in explosion-hazardous areas according to claim 7, characterized in that: It also includes data collection, specifically: Set up temperature integration recording function for: ; exist Range: ; exist Range: ; Calculated: ; exist Range: ; The overall integral value is: ; Set the sampling interval to ; Set the sampling time to ,in , ; Set the sampling and recording function to: ; All sampling points constitute a discrete sampling data set: ； Discretely sampled data sets Stored in the database.

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