Loose rehydration heat short diagnostic method and device

Abstract

This invention discloses a method, device, electronic device, and storage medium for diagnosing thermal short circuits in loosely rehydrated tobacco. The method includes: acquiring real-time parameters during the loose rehydration of tobacco and determining basic characteristic parameters based on these parameters; establishing static diagnostic rules for thermal short circuits based on the real-time parameters and basic characteristic parameters, and performing preliminary static diagnosis of the thermal short circuit based on these rules; conducting dynamic response testing when a thermal short circuit is preliminarily determined to be triggered; wherein the dynamic response test includes dehumidification disturbance testing and steam response testing; and performing a fusion diagnosis based on the preliminary static diagnosis and the dynamic response test to determine the diagnostic result of the loosely rehydrated thermal short circuit. By introducing dehumidification disturbance testing and steam response testing into the loosely rehydrated system, and actively changing the system state to observe response characteristics, active diagnosis of thermal short circuits is achieved.

Description

Technical Field

[0001] This invention relates to the field of loosening and rehydration technology in tobacco processing, and particularly to a method and apparatus for diagnosing heat short circuits during loosening and rehydration. Background Technology

[0002] Re-moistening is a crucial step in tobacco processing, its core objective being to loosen the tobacco sheets through heating and humidification, thereby improving their workability. Most re-moistening equipment (taking the WQ387 model as an example) provides heat from inlet hot air and steam, which is then evenly distributed to the material via circulating air, with excess hot and humid air discharged through the dehumidification system. However, in actual production, a common problem is "high energy consumption and low efficiency": the inlet hot air temperature reaches as high as 120℃, but the outlet material temperature is only 50-60℃, resulting in a significant amount of wasted heat. Analysis reveals that the root cause of this phenomenon is a heat short-circuit—the heat provided by the inlet hot air and steam is directly drawn away by the dehumidification system or overflows outside the equipment without effective heat exchange with the material.

[0003] In the existing technology, there are a number of control and detection methods for the loose re-moistening process: CN101133896A discloses a method to control the exhaust steam volume by using the difference between the material temperature T1 and the circulating air temperature T2, and to make T2 approach T1 by the action of the valve; this method realizes the automatic adjustment of the exhaust steam volume, but it is a passive control and cannot actively diagnose thermal short circuit faults.

[0004] Therefore, how to actively diagnose thermal short circuits is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a method, device, electronic device, and storage medium for diagnosing loose moisture heat short circuits, in order to solve the problem that existing technologies are all passive monitoring rather than active diagnosis and lack active stimulation testing.

[0006] According to one aspect of the present invention, a method for diagnosing loose, humidified heat short circuits is provided, the method comprising: Acquire real-time sampling parameters when tobacco is loose and rehydrated, and determine basic characteristic parameters based on the real-time sampling parameters; A static diagnosis rule for thermal short circuit is established based on real-time collected parameters and basic characteristic parameters, and a preliminary static diagnosis of thermal short circuit is performed based on the aforementioned static diagnosis rule. When a thermal short circuit is initially determined to be triggered, a dynamic response test is conducted; wherein, the dynamic response test includes a humidification disturbance test and a steam response test; Based on preliminary static diagnosis and dynamic response testing, a fusion diagnosis was conducted to determine the results of the loose moisture reabsorption heat short circuit diagnosis.

[0007] According to another aspect of the present invention, a loose moisture heat short-circuit diagnostic device is provided, the device comprising: The parameter acquisition module is used to acquire real-time collected parameters when the tobacco is loose and rehydrated, and to determine basic characteristic parameters based on the real-time collected parameters. The preliminary static diagnosis module is used to establish static diagnosis rules for thermal short circuits based on real-time acquired parameters and basic characteristic parameters, and to perform preliminary static diagnosis of thermal short circuits based on the aforementioned static diagnosis rules. The dynamic response test module is used to perform dynamic response tests when a thermal short circuit is initially determined to be triggered; wherein, the dynamic response test includes a humidification disturbance test and a steam response test; The fusion diagnostic module is used to perform fusion diagnostics based on preliminary static diagnosis and dynamic response testing to determine the results of loose moisture heat short circuit diagnosis.

[0008] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the loose moisture heat short-circuit diagnostic method according to any embodiment of the present invention.

[0009] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the loose moisture heat short-circuit diagnosis method according to any embodiment of the present invention.

[0010] According to another aspect of the present invention, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the loose moisture heat short-circuit diagnosis method as described in any embodiment of the present invention.

[0011] The technical solution of this invention involves acquiring real-time parameters during the loosening and rehydration of tobacco, and determining basic characteristic parameters based on these parameters. A static diagnostic rule for thermal short circuits is established based on the real-time parameters and the basic characteristic parameters, and a preliminary static diagnosis of the thermal short circuit is performed according to this rule. When a thermal short circuit is preliminarily determined to be triggered, a dynamic response test is conducted. This dynamic response test includes a dehumidification disturbance test and a steam response test. A fusion diagnosis is performed based on the preliminary static diagnosis and the dynamic response test to determine the diagnostic result of the loosening and rehydration thermal short circuit. By introducing dehumidification disturbance tests and steam response tests into the loosening and rehydration system, and actively changing the system state to observe the response characteristics, proactive diagnosis of thermal short circuits is achieved.

[0012] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a flowchart of a method for diagnosing short-circuit caused by loose moisture reabsorption, according to Embodiment 1 of the present invention; Figure 2 This is a flowchart of a method for diagnosing short-circuit caused by loose moisture reabsorption, according to Embodiment 2 of the present invention; Figure 3 This is a flowchart of another loose moisture heat short-circuit diagnosis method provided in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the structure of a loose moisture reabsorption heat short circuit diagnostic device provided in Embodiment 3 of the present invention; Figure 5 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0016] The acquisition, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. It should be noted that the terms "first," "second," "target," and "original," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising," "etc.," and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0017] Example 1 Figure 1 This invention provides a flowchart of a method for diagnosing loose moisture and heat short circuits, as described in Embodiment 1. This embodiment is applicable to situations where loose moisture and heat short circuits are diagnosed based on preliminary static diagnosis and dynamic response testing. This method can be executed by a loose moisture and heat short circuit diagnostic device, which can be implemented in hardware and / or software. This device can be configured in any electronic device with network communication capabilities. Figure 1 As shown, the method includes: S110. Obtain real-time acquisition parameters when the tobacco is loose and rehydrated, and determine basic characteristic parameters based on the real-time acquisition parameters.

[0018] Among them, loosening and rehumidifying refers to the first key process in the tobacco processing production process. Its core technological task is to loosen the tobacco sheets by increasing temperature and humidity, thereby improving their processing resistance.

[0019] Real-time acquisition parameters refer to parameters acquired in real time by sensors when the tobacco is loosened and rehydrated; the real-time acquisition parameters include, but are not limited to, inlet hot air temperature, circulating air temperature, outlet material temperature, ambient temperature, dehumidification damper opening, and steam flow rate.

[0020] Basic characteristic parameters refer to the characteristic parameters calculated by the data processor from the real-time acquired parameters; the basic characteristic parameters include, but are not limited to, the first temperature difference, the second temperature difference, and the system thermal efficiency.

[0021] As an optional but non-limiting implementation, the acquisition of real-time sampling parameters when the tobacco is loose and rehydrated, and the determination of basic characteristic parameters based on the real-time sampling parameters, includes, but is not limited to, steps A1-A4: Step A1: Use temperature sensors to obtain the inlet hot air temperature, circulating air temperature, outlet material temperature, and ambient temperature when the tobacco is loosened and rehydrated. Step A2: Obtain the opening degree of the dehumidification damper when the tobacco is loosened and re-moistened using the damper opening sensor; Step A3: Obtain the steam flow rate when the tobacco is loosened and rehydrated using a steam flow meter; Step A4: The data processor calculates the real-time acquired data to determine the basic characteristic parameters; wherein, the real-time acquired data includes inlet hot air temperature, circulating air temperature, outlet material temperature, ambient temperature, exhaust damper opening, and steam flow rate; the basic characteristic parameters include first temperature difference, second temperature difference, and system thermal efficiency; The first temperature difference is determined based on the difference between the inlet hot air temperature and the circulating air temperature, the second temperature difference is determined based on the difference between the circulating air temperature and the outlet material temperature, and the system thermal efficiency is determined based on the inlet hot air temperature, the outlet material temperature, and the ambient temperature.

[0022] Among them, temperature sensors are used to collect inlet hot air temperature Tin, circulating air temperature Tcirc, outlet material temperature Tout, and ambient temperature Tamb; damper opening sensor is used to collect exhaust damper opening Pexh (%); steam flow meter is used to collect steam flow Fsteam (%, as a percentage of material flow); and pressure sensor is used to collect drum pressure P (Pa).

[0023] The basic characteristic parameters calculated using data sensors can be expressed as: First temperature difference Represented as: ; Second temperature difference Represented as: ; System thermal efficiency Represented as: .

[0024] S120. Establish static diagnostic rules for thermal short circuits based on real-time collected parameters and basic characteristic parameters, and perform preliminary static diagnosis of thermal short circuits based on the static diagnostic rules for thermal short circuits.

[0025] Thermal short-circuiting is an abnormal phenomenon that occurs during the loosening and rehydration process. Specifically, it refers to a situation where, during the operation of the loosening and rehydration equipment, some high-temperature steam or hot air fails to fully contact the tobacco shreds along the preset path to complete the transfer of heat and moisture, instead rapidly exiting through gaps or bypasses in the equipment. Because of this thermal short-circuiting, the tobacco shreds cannot obtain sufficient heat and moisture, resulting in substandard moisture content, temperature, and toughness. This can easily lead to broken or shredded tobacco shreds during subsequent cutting and rolling processes, reducing processing efficiency. Furthermore, the ineffective utilization of a large amount of steam or hot air due to thermal short-circuiting increases energy consumption and production costs. Additionally, the abnormal impact of the high-temperature airflow on certain parts of the equipment during thermal short-circuiting may accelerate the aging and damage of equipment components.

[0026] Static diagnostic rules refer to a set of judgment logic formed by setting threshold combinations based on real-time collected parameters and basic characteristic parameters under stable equipment operation. This is used to quickly identify suspected abnormal heat states in the system. Static diagnosis is a qualitative judgment based on fixed thresholds, which does not rely on parameter change trends and can complete preliminary screening using only current static data.

[0027] Preliminary static diagnosis refers to the process of matching and verifying real-time acquired parameters according to preset static diagnosis rules to determine whether they meet the suspected fault triggering conditions, thereby quickly screening out equipment states with thermal short circuit or related abnormal risks, and providing a triggering basis for subsequent dynamic response testing.

[0028] S130. When a thermal short circuit is initially determined to be triggered, a dynamic response test is performed.

[0029] The preliminary determination of the thermal short circuit refers to the process of determining whether the real-time acquired parameters meet the static diagnostic rules for thermal short circuit when matching and verifying the real-time acquired parameters, thus identifying the risk of thermal short circuit in the system and preliminarily determining the triggering of thermal short circuit.

[0030] Dynamic response testing refers to the proactive testing process that, after preliminary static diagnosis identifies a suspected thermal short circuit, involves actively disturbing system operating parameters, such as the opening of the exhaust damper and steam flow rate, to monitor the dynamic changes of fundamental characteristic parameters in real time. This process verifies the static diagnosis and pinpoints the core cause of the thermal short circuit. Dynamic response testing differs from the "passive data matching" of static diagnosis; it disrupts the system's steady state through human intervention, uncovering the root cause of the fault from the response characteristics of the parameters, and providing a basis for subsequent precise repairs. The dynamic response test includes exhaust disturbance testing and steam response testing.

[0031] The evacuation disturbance test refers to a test method that verifies whether excessive evacuation is the main cause of thermal short circuit by actively adjusting the opening of the evacuation damper and simultaneously monitoring the changing trends of basic characteristic parameters. If ΔT2 increases significantly and the system thermal efficiency η increases significantly after reducing the opening of the evacuation damper, it can be confirmed that excessive evacuation is the key factor of thermal short circuit; if the parameters do not change significantly, this cause can be ruled out, and other possible causes should be focused on.

[0032] Steam response testing is a method of determining whether the heat transfer channels in a system are unobstructed by adjusting the steam flow rate and observing the response speed and magnitude of parameters such as ΔT1, ΔT2, and outlet material temperature. If ΔT2 rises rapidly after increasing the steam flow rate, it indicates that heat is effectively transferred to the material, and a heat short circuit may be caused by external factors. If ΔT2 still does not change significantly, it confirms that there is a heat transfer obstacle within the system, and further investigation of equipment structure or material flow problems is required.

[0033] This invention introduces dehumidification disturbance test and steam response test into a loose rehumidification system. By actively changing the system state and observing the response characteristics, it achieves active diagnosis of thermal short circuits.

[0034] S140. Based on preliminary static diagnosis and dynamic response test, a fusion diagnosis is performed to determine the short-circuit diagnosis result of loose moisture reabsorption heat.

[0035] Among them, fusion diagnosis refers to a diagnostic mode that integrates preliminary static diagnostic results and dynamic response test results, and makes a comprehensive judgment on loose moisture heat short circuit through cross-validation, weight allocation and other methods.

[0036] The diagnosis result of thermal short circuit due to loosening and rehydration refers to a comprehensive judgment conclusion made on whether the system has a thermal short circuit, the core type of the short circuit, and repair suggestions, based on the static diagnosis rules of the loosening and rehydration process, dynamic response test data, and fusion diagnosis logic.

[0037] This invention provides a fusion diagnosis based on preliminary static diagnosis and dynamic response testing, breaking the limitations of a single diagnostic method. By leveraging the complementarity of different data sources and methods, it improves the accuracy, reliability, and robustness of diagnostic results, avoiding misjudgments or omissions caused by single data biases or method defects.

[0038] This invention provides a method for diagnosing thermal short circuits during loose, rehydrated tobacco. The method involves acquiring real-time parameters during the loose, rehydrated tobacco process and determining basic characteristic parameters based on these parameters. A static diagnostic rule for thermal short circuits is established based on the real-time parameters and the basic characteristic parameters, and a preliminary static diagnosis of the thermal short circuit is performed according to this rule. When a thermal short circuit is preliminarily determined to be triggered, a dynamic response test is conducted. This dynamic response test includes a dehumidification disturbance test and a steam response test. A fusion diagnosis is performed based on the preliminary static diagnosis and the dynamic response test to determine the diagnostic result of the loose, rehydrated tobacco thermal short circuit. By introducing dehumidification disturbance and steam response tests into the loose, rehydrated tobacco system, and actively changing the system state to observe the response characteristics, proactive diagnosis of thermal short circuits is achieved.

[0039] Example 2 Figure 2 This is a flowchart of a loose, re-moistening heat short-circuit diagnosis method provided in Embodiment 2 of the present invention. This embodiment further optimizes the aforementioned embodiments, and can be combined with various optional solutions from one or more of the above embodiments. For example... Figure 2 As shown, the method includes: S210. Obtain real-time acquisition parameters when the tobacco is loose and rehydrated, and determine basic characteristic parameters based on the real-time acquisition parameters.

[0040] S220. Establish static diagnostic rules for thermal short circuits based on real-time collected parameters and basic characteristic parameters, and perform preliminary static diagnosis of thermal short circuits based on the static diagnostic rules for thermal short circuits.

[0041] Specifically, a static diagnostic rule for thermal short circuits is constructed, and a preliminary static diagnosis of thermal short circuits is performed based on the static diagnostic rule for thermal short circuits.

[0042] As an optional but non-limiting implementation, the establishment of static diagnostic rules for thermal short circuits based on real-time acquired parameters and basic characteristic parameters includes, but is not limited to, steps B1-B3: Step B1: When the first temperature difference is greater than the first preset temperature difference threshold and the second temperature difference is less than the second preset temperature difference threshold, establish a first static diagnostic rule for thermal short circuit; wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold. Step B2: When the first temperature difference is greater than the first preset temperature difference threshold and the opening of the exhaust damper is greater than the preset exhaust damper opening threshold, establish a second static diagnostic rule for heat short circuit. Step B3: When the system thermal efficiency is less than the preset system thermal efficiency threshold, establish a third static diagnostic rule for thermal short circuit.

[0043] Referring to Table 1, a static diagnostic rule for thermal short circuit is constructed. When the first temperature difference is greater than a first preset temperature difference threshold and the second temperature difference is less than a second preset temperature difference threshold, a first static diagnostic rule for thermal short circuit is established. This rule identifies a suspected thermal short circuit, resulting in significant heat loss at the inlet and only a trace amount of heat being gained by the material. When the first temperature difference is greater than the first preset temperature difference threshold and the exhaust damper opening is greater than a preset exhaust damper opening threshold, a second static diagnostic rule for thermal short circuit is established. This rule identifies a suspected excessive exhaust, with the exhaust damper opening being too large. When the system thermal efficiency is less than a preset system thermal efficiency threshold, a third static diagnostic rule for thermal short circuit is established. This rule identifies a suspected low thermal efficiency, with the system thermal efficiency below normal levels. Preferably, the first preset temperature difference threshold can be set to 50℃, the second preset temperature difference threshold can be set to 5℃, the preset exhaust damper opening threshold can be set to 80%, and the preset system thermal efficiency threshold can be set to 40%. Optionally, the first static diagnostic rule can be numbered S01, the second static diagnostic rule can be numbered S02, and the third static diagnostic rule can be numbered S03.

[0044] As an optional but non-limiting implementation, the step of establishing static diagnostic rules for thermal short circuits based on real-time acquired parameters and basic characteristic parameters, and performing preliminary static diagnostics of thermal short circuits based on these rules, includes: When the first static diagnostic rule is established and the second static diagnostic rule is established, or when the first static diagnostic rule is established and the third static diagnostic rule is established, it is preliminarily determined that a thermal short circuit has been triggered.

[0045] Specifically, when rule S01 is met and at least one of rule S02 or rule S03 is met, a suspected thermal short circuit state is preliminarily determined, and the dynamic response test phase begins.

[0046] S230. When it is initially determined that a thermal short circuit has been triggered, a dehumidification disturbance test is conducted.

[0047] Among them, see Figure 3 After initially identifying a suspected thermal short circuit, a dynamic response test is conducted; this test includes a humidification disturbance test and a steam response test. If the preliminary static diagnosis determines that no thermal short circuit has been triggered, routine monitoring is performed, and a four-dimensional comprehensive evaluation is conducted directly.

[0048] As an optional but non-limiting implementation, the step of performing a dehumidification disturbance test when a thermal short circuit is initially determined to be triggered includes, but is not limited to, steps C1-C4: Step C1: Increase the opening of the exhaust damper from the current value to the preset exhaust damper opening value, and maintain the preset time interval to determine the change in circulating air temperature and the change in outlet material temperature; Step C2: Determine the moisture sensitivity coefficient of the circulating air temperature based on the change in circulating air temperature and the preset opening value of the exhaust damper; Step C3: Determine the moisture sensitivity coefficient of the outlet material temperature based on the change in outlet material temperature and the preset moisture exhaust damper opening value; Step C4: Based on the moisture sensitivity coefficients of the circulating air temperature and the outlet material temperature, formulate diagnostic rules for moisture disturbance testing.

[0049] Specifically, the control unit automatically or manually increases the opening of the exhaust damper from the current value P0 to a preset exhaust damper opening value ΔP (preferably ΔP=10%), maintaining this for a preset time interval, such as 5 minutes. After the system stabilizes again, the change in circulating air temperature ΔTcirc and the change in outlet material temperature ΔTout are recorded, and the exhaust sensitivity coefficient is calculated.

[0050] The moisture sensitivity coefficients, including the moisture sensitivity coefficient Kcirc for circulating air temperature and the moisture sensitivity coefficient Kout for outlet material temperature, can be expressed as: (Unit: ℃ / %) (Unit: ℃ / %)

[0051] After determining the moisture sensitivity coefficients for circulating air temperature and outlet material temperature, a diagnostic rule for moisture disturbance testing is established.

[0052] Referring to Table 2, when the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is less than the second preset moisture sensitivity coefficient, a first moisture disturbance test diagnosis rule is established. If the first moisture disturbance test diagnosis rule is met, it is determined to be a short circuit with no heat reserve. Preferably, the first preset moisture sensitivity coefficient is -0.15. / %, the second preset moisture sensitivity coefficient is -0.05 / %.

[0053] When the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is greater than or equal to the second preset moisture sensitivity coefficient, a second moisture disturbance test diagnosis rule is formulated; if the second moisture disturbance test diagnosis rule is met, it is determined to be a volume-sensitive short circuit.

[0054] When the humidity sensitivity coefficient of the circulating air temperature is greater than or equal to the first preset humidity sensitivity coefficient, a third humidity disturbance test diagnosis rule is formulated; if the third humidity disturbance test diagnosis rule is met, the humidity effect is determined to be insignificant. Optionally, the first tide disturbance test diagnosis rule can be numbered R01, the second tide disturbance test diagnosis rule can be numbered R02, and the third tide disturbance test diagnosis rule can be numbered R03.

[0055] S240. When it is initially determined that a thermal short circuit has been triggered, a steam response test is performed.

[0056] In this invention, after conducting a dehumidification disturbance test, a steam response test is performed. This embodiment of the invention introduces dehumidification disturbance and steam response tests into a loose, rehumidified system, observing the response characteristics by actively changing the system state to achieve proactive diagnosis of thermal short circuits.

[0057] As an optional but non-limiting implementation, the steam response test performed when a thermal short circuit is initially determined to be triggered includes, but is not limited to, steps D1-D3: Step D1: Increase the steam valve opening from the current value to a preset steam valve opening value, and maintain this for a preset time interval to determine the increase in circulating air temperature after it stabilizes. Step D2: Determine the steam response thermal sensitivity coefficient based on the rise in circulating air temperature after it stabilizes and the preset steam valve opening value; Step D3: Based on the steam response thermal sensitivity coefficient, formulate steam response test diagnostic rules.

[0058] Specifically, the steam valve opening is increased from the current value S0 to a preset steam valve opening value ΔS, preferably ΔS = 1%~5%, and maintained at a preset time interval Δt = 3~5 minutes. The increase in circulating air temperature after stabilization is recorded. Based on the temperature rise of the circulating air after stabilization and the preset steam valve opening value, the steam response thermal sensitivity coefficient KT is determined; the steam response thermal sensitivity coefficient KT can be expressed as: (Unit: ℃ / %)

[0059] Referring to Table 3, a steam response test diagnostic rule is constructed. When the steam response thermal sensitivity coefficient is greater than or equal to the first preset steam response thermal sensitivity coefficient, a first steam response test diagnostic rule is established; the thermal response conclusion is that the thermal response is sensitive. Preferably, the first preset steam response thermal sensitivity coefficient is 3.0.

[0060] When the steam response thermal sensitivity coefficient is less than the first preset steam response thermal sensitivity coefficient and greater than or equal to the second preset steam response thermal sensitivity coefficient, a second steam response test diagnostic rule is established; the thermal response conclusion is that the thermal response is normal. Preferably, the second preset steam response thermal sensitivity coefficient is 1.5.

[0061] When the steam response thermal sensitivity coefficient is less than the second preset steam response thermal sensitivity coefficient, a third steam response test diagnostic rule is formulated; the thermal response conclusion is that the thermal response is sluggish.

[0062] Optionally, the first steam response test diagnostic rule can be numbered R04, the second steam response test diagnostic rule can be numbered R05, and the third steam response test diagnostic rule can be numbered R06. Meeting the first steam response test diagnostic rule indicates efficient utilization of steam heat; meeting the second steam response test diagnostic rule indicates effective participation of steam in heat exchange; meeting the third steam response test diagnostic rule indicates a possible thermal short circuit and steam failure; if the steam response thermal sensitivity coefficient is less than 0.5, it can be considered a serious steam failure.

[0063] This invention introduces a steam response sensitivity coefficient KT to quantify the system's dynamic response capability to steam, thus compensating for the shortcomings of static parameter diagnosis.

[0064] S250, based on preliminary static diagnosis and dynamic response test, a fusion diagnosis is performed to determine the loose moisture heat short circuit diagnosis result.

[0065] The diagnostic process integrates preliminary static diagnosis with dynamic response testing to accurately determine the diagnosis of loose moisture reabsorption thermal short circuits. If the preliminary static diagnosis indicates a suspected thermal short circuit and KT < 1.5, the existence of a thermal short circuit can be further confirmed. After confirming the existence of a thermal short circuit, the type of thermal short circuit is determined jointly based on dehumidification disturbance testing and steam response testing. The types of thermal short circuits include, but are not limited to, excessive dehumidification short circuits, steam failure short circuits, and combined short circuits.

[0066] As an optional but non-limiting implementation, the fusion diagnosis based on preliminary static diagnosis and dynamic response testing to determine the loose moisture heat short-circuit diagnosis result includes, but is not limited to, steps E1-E4: Step E1: When it is initially determined that a thermal short circuit has been triggered, if the dehumidification disturbance test meets the first or second dehumidification disturbance test diagnosis rule, and the steam response test meets the third steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a composite short circuit. Step E2: When it is initially determined that a thermal short circuit has been triggered, if the dehumidification disturbance test meets the first dehumidification disturbance test diagnosis rule or the second dehumidification disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a dehumidification excessive type short circuit. Step E3: When the initial determination of the triggering thermal short circuit is made, if the dehumidification disturbance test meets the third dehumidification disturbance test diagnosis rule and the steam response test meets the third steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a steam failure type short circuit. Step E4: When the preliminary static diagnosis meets the first static diagnosis rule, the tidal disturbance test meets the first tidal disturbance test diagnosis rule or the second tidal disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the loose re-humidification heat short circuit diagnosis result is determined to be a heat-free short circuit.

[0067] Referring to Table 4, when the initial static diagnosis indicates a triggered thermal short circuit, the dynamic response test results are further determined. If the evacuation disturbance test result is R01 or R02 and the steam response test result is R06, it can be determined as a composite short circuit. If the evacuation disturbance test result is R01 or R02 and the steam response test result is R04 or R05, it can be determined as an excessive evacuation short circuit. If the evacuation disturbance test result is R03 and the steam response test result is R06, it can be determined as a steam failure short circuit. If the initial static diagnosis is S01, the evacuation disturbance test result is R01 or R02, and the steam response test result is R04 or R05, it can be determined as a short circuit with no heat reserve. If the initial static diagnosis is S01, the evacuation disturbance test result is R03, and the steam response test result is R04 or R05, it is suspected to be another fault. The embodiments of the present invention can distinguish between different types of heat short circuits, such as excessive moisture discharge, steam failure, and no heat reserve, providing a basis for precise handling.

[0068] S260, four-dimensional comprehensive evaluation, and classification of the system's health level.

[0069] After determining the system's thermal short-circuit diagnosis results, a system health assessment is conducted.

[0070] As an optional but non-limiting implementation, the method also includes, but is not limited to, steps F1-F3: Step F1: Construct a four-dimensional evaluation index; the four-dimensional evaluation index includes temperature difference characteristic index, thermal efficiency index, steam thermal effectiveness index and pressure stability index.

[0071] Among them, a four-dimensional evaluation index is constructed, which includes temperature difference characteristic index, thermal efficiency index, steam thermal effectiveness index and pressure stability index.

[0072] As an optional but non-limiting implementation, the construction of the four-dimensional evaluation index includes, but is not limited to, steps G1-G4: Step G1: Construct temperature difference characteristic indicators based on the first temperature difference and the second temperature difference; Step G2: Based on the system thermal efficiency and the preset thermal efficiency threshold, establish different thermal efficiency indices; Step G3: Determine the static heat contribution coefficient based on the outlet material temperature, ambient temperature, and steam flow rate; determine the dynamic heat sensitivity coefficient based on the static heat contribution coefficient, the historical benchmark static heat contribution coefficient, and the steam response test diagnostic rules; establish a steam thermal effectiveness index based on the dynamic heat sensitivity coefficient. Step G4: Determine the pressure fluctuation coefficient based on the maximum, minimum, and average pressure values ​​inside the drum within the preset monitoring time; construct a pressure stability index based on the pressure fluctuation coefficient.

[0073] This involves constructing temperature difference characteristic indicators. Preferably, a normal range is defined as follows: , The scoring rules for temperature difference characteristic indicators can be expressed as follows: ; ; ; Wherein, SD1 represents the temperature difference feature score under the first temperature difference, SD2 represents the temperature difference feature score under the second temperature difference, and SD represents the total temperature difference feature score after weighting.

[0074] A thermal efficiency index is constructed, and a scoring rule is established based on a preset thermal efficiency threshold. Preferably, the preset thermal efficiency threshold can be 35%, 45%, or 55%. These thresholds are determined based on statistical analysis of a large amount of normal operating data. Under normal operating conditions, the thermal efficiency is generally above 45%, and below 35% is considered significantly low thermal efficiency. The thermal efficiency index scoring rule can be expressed as follows: ; ; ; .

[0075] Here, SE represents the thermal efficiency score, and the corresponding score varies depending on the system's thermal efficiency.

[0076] Construct a steam thermal effectiveness index. Determine the static thermal contribution coefficient. Dynamic thermal sensitive system KT and historical baseline static thermal contribution coefficient 0 can be represented as: .

[0077] Preferred scoring rules for steam thermal effectiveness index as follows: ; Determined according to R04-R06, , , ; .

[0078] in, A static score representing the thermal effectiveness of steam. A dynamic score representing the thermal effectiveness of steam.

[0079] Construct a pressure stability index. Determine the pressure fluctuation coefficient. , is represented as: .

[0080] in, This indicates the maximum pressure inside the drum during the set monitoring period (unit: Pa). This indicates the minimum pressure inside the drum within the same time period (unit: Pa). This represents the arithmetic mean of the pressure inside the drum over the same time period (unit: Pa).

[0081] Preferred scoring rules for pressure stability index as follows: ; ; ; Step F2: Assign weights to the four-dimensional evaluation indicators respectively, and perform weighted summation to determine the comprehensive health score of the system.

[0082] In this process, weights are assigned to the four evaluation indicators to determine the overall health score of the system. , can be represented as: ; Preferred, , , , ;in, , , , These are the weights.

[0083] Step F3: Based on the comprehensive health score of the system, classify the system into health levels.

[0084] Among them, determining the overall health score of the system and classifying the system's health level can be expressed as: ; ; ; .

[0085] This invention constructs a four-dimensional evaluation system based on temperature difference characteristics, thermal efficiency, steam thermal effectiveness, and pressure stability, thereby enabling a quantitative score of the system's health.

[0086] In one optional embodiment of the present invention, after determining the type of thermal short circuit, processing suggestions are formulated so that operators can quickly locate the problem. Specifically, referring to Table 5, if the thermal short circuit type is an excessive evacuation short circuit, it is recommended to appropriately reduce the evacuation damper, observe temperature changes, and retest the KT; if the thermal short circuit type is a steam failure short circuit, it is recommended to check the steam valve, drain valve, and filter to confirm steam quality; if the thermal short circuit type is a short circuit with no heat reserve, it is recommended to reduce the circulating air volume, increase the system thermal inertia, and retest the KT; if the thermal short circuit type is a compound short circuit, it is recommended to make comprehensive adjustments, first reducing the evacuation, and then checking the steam system; if the problem is low thermal efficiency, it is recommended to check the air volume matching and optimize the evacuation settings; if the problem is abnormal pressure fluctuations, it is recommended to check the air volume matching and adjust the balance between inlet hot air and evacuation. This invention focuses on the specific diagnosis of thermal short circuits and the comprehensive evaluation of system health. It actively diagnoses the type of thermal short circuit through humidification disturbance test and steam response test, and constructs a four-dimensional evaluation system to quantify the system status.

[0087] In one optional embodiment of the present invention, taking the diagnosis result of excessive evaporation type heat short circuit as an example, the technical solution of this solution is described.

[0088] Step 1: Data Acquisition and Basic Feature Calculation In a batch of WQ387 loose rehumidification machine production at a certain cigarette factory, parameters were collected in real time using sensors: Tin=120℃; Tcirc=60℃; Tout=55℃; Pexh=85%; Fsteam=4%; Tamb=25℃; Calculation: ΔT1=60℃, ΔT2=5℃, η=(55-25) / (120-25)=31.6%.

[0089] Step 2: Static Diagnosis and Suspected Thermal Short Circuit Trigger Since ΔT1 > 50℃ and ΔT2 < 5℃, rule S01 is valid; at the same time, η < 40%, rule S03 is valid. Therefore, a suspected thermal short circuit state is triggered, and dynamic testing begins.

[0090] Step 3: Tidal Disturbance Test Open the exhaust damper from 85% to 95% (ΔP=10%) and hold for 5 minutes. After the system stabilizes again: the circulating air temperature drops from 60℃ to 54℃, with a change of ΔTcirc=-6℃; the outlet material temperature drops from 55℃ to 53℃, with a change of ΔTout=-2℃.

[0091] Calculate: Kcirc = -6 / 10 = -0.6℃ / %; Kout = -2 / 10 = -0.2℃ / %.

[0092] According to the diagnostic rules for tidal disturbance testing, it meets the criteria for R01, which is a short circuit with no heat reserve.

[0093] Step 4: Steam Response Test Increase the steam ratio from 4% to 9% and maintain this position for 5 minutes, recording the increase in circulating air temperature from 60°C to 66°C. =6℃, calculate KT=6 / 5=1.2<1.5.

[0094] According to the steam response test diagnostic rules, it meets R06, which means sluggish thermal response.

[0095] Step 5: Confirm the type of thermal short circuit (refer to Table 4) According to Table 4, Kcirc < -0.15 and KT < 1.5. Combined with the static condition (dampness exhaust damper opening > 80%), it is determined to be a compound short circuit.

[0096] Step 6: Four-dimensional comprehensive evaluation Temperature difference characteristics: SD1=100-5×|60-30|=0; SD2=100-10×|5-5.5|=95; SD=0.5×0+0.5×95=47.5; Thermal efficiency: SE=40.

[0097] Steam thermal effectiveness: T = (55 - 25) / 4 = 7.5, assuming a baseline T0=6.5, deviation 15.4% → 80; KT=1.2→ =60; SG=70.

[0098] Pressure stability: Assume ψ=15%→SW=80.

[0099] Overall rating: SC = 0.3 × 47.5 + 0.3 × 40 + 0.2 × 70 + 0.2 × 80 = 14.25 + 12 + 14 + 16 = 56.25 points, the health level is poor.

[0100] Step 7: Output conclusions and processing suggestions Diagnosis: Excessive dehumidification + steam failure combined with short circuit, health score 56.25 (poor). It is recommended to appropriately reduce the dehumidification damper and check the steam system.

[0101] In one optional embodiment of the present invention, taking a steam failure-type thermal short circuit as an example, the technical solution of this solution is described.

[0102] Step 1: Data Acquisition and Basic Feature Calculation In a batch of WQ387 loose rehumidifier produced by a cigarette factory, the following parameters were collected in real time by sensors: Tin=118℃; Tcirc=62℃; Tout=58℃; Pexh=65%; Fsteam=12%; Tamb=25℃.

[0103] Calculation: ΔT1=118-62=56℃>50℃; ΔT2=62-58=4℃<5℃; η=(58-25) / (118-25)=33 / 93≈35.5%<40%.

[0104] Step 2: Static Diagnosis and Suspected Thermal Short Circuit Trigger Rule S01 is met, and rule S03 is also met (η<40%), while rule S02 is not met (Pexh=65%<80%). Therefore, the static diagnosis satisfies S01+S03, triggering a suspected thermal short circuit state, and entering dynamic testing.

[0105] Step 3: Tidal Disturbance Test Open the exhaust damper from 65% to 75% (ΔP=10%) and hold for 5 minutes. After the system stabilizes again: the circulating air temperature drops from 62℃ to 61.5℃, with a change of ΔTcirc=-0.5℃; the outlet material temperature drops from 58℃ to 57.8℃, with a change of ΔTout=-0.2℃.

[0106] Calculate the moisture sensitivity coefficient: Kcirc=-0.5 / 10=-0.05℃ / %; Kout=-0.2 / 10=-0.02℃ / %.

[0107] According to the diagnostic rules for tidal disturbance testing: Kcirc=-0.05≥-0.15, which meets rule R03 (the effect of tidal disturbance is not significant).

[0108] Step 4: Steam Response Test Increase the steam ratio from 12% to 17% by 5%, maintain this position for 5 minutes, and record the temperature rise after the circulating air temperature stabilizes: the circulating air temperature rises from 62℃ to 62.8℃. =0.8℃.

[0109] Calculate the thermal sensitivity coefficient: KT=0.8 / 5=0.16℃ / %; According to the steam response test diagnosis rules: KT=0.16<0.5, it belongs to severe steam failure, which meets the rule R06, that is, sluggish thermal response.

[0110] Step 5: Confirm the type of thermal short circuit (refer to Table 4) The static rule is S01+S03, the moisture disturbance test result is R03, and the steam response test result is R06. Referring to the comprehensive diagnostic table: S01+S03, R03, R06 → Steam failure type short circuit.

[0111] Step 6: On-site investigation and verification Based on the diagnostic findings, the steam system was inspected. A blocked steam trap was found, resulting in significant water carryover in the steam. After cleaning the steam trap, the steam response was retested: with a 5% increase in steam, the circulating air temperature rose from 62°C to 76°C. =14℃, KT=2.8, entering the normal range (R05). The system returned to normal, and the parameters stabilized to: Tin=112℃, Tcirc=76℃, Tout=70℃.

[0112] In one optional embodiment of the present invention, the technical solution of this solution is described using a comprehensive evaluation of high-efficiency heat exchange conditions as an example.

[0113] Step 1: Data Acquisition and Basic Feature Calculation In a certain batch of production, the following was detected: Tin=110℃; Tcirc=79℃; Tout=74℃; Pexh=55%; Fsteam=11%; Tamb=25℃; Roller pressure P=+30Pa±3Pa.

[0114] Calculation: ΔT1=31℃; ΔT2=5℃; η=(74-25) / (110-25)=57.6%.

[0115] Step 2: Static Diagnosis Since S01 was not triggered (ΔT1<50), the thermal short circuit diagnosis was not initiated, and the four-dimensional comprehensive evaluation was performed directly.

[0116] Step 3: Steam Response Test Increase the steam ratio from 11% to 14% by 3%, raise the circulating air temperature from 79℃ to 88℃, ΔTcirc_rise=9℃, KT=3.0.

[0117] According to the steam response test diagnostic rules, it meets R04 (sensitive thermal response).

[0118] Step 4: Four-dimensional comprehensive evaluation Temperature difference characteristics: SD1=100-5×|31-30|=95, SD2=100-10×|5-5.5|=95, SD=95; Thermal efficiency: SE=100; Steam thermal effectiveness: T = (74-25) / 11 = 4.45, assuming a baseline T0=4.3, deviation 3.5% → =100; KT=3.0→ =100; SG=100; Pressure stability: ψ=(33-27) / 30×100%=20%→SW=80; Overall rating: SC = 0.3×95 + 0.3×100 + 0.2×100 + 0.2×80 = 28.5 + 30 + 20 + 16 = 94.5 points, indicating an excellent health level.

[0119] Step 5: Output the conclusion System status: High-efficiency heat exchange, health score 94.5 (excellent). It is recommended to maintain the current parameters, which can be used as the benchmark process parameters for this grade of tobacco.

[0120] Example 3 Figure 4 This is a schematic diagram of a loose, moisture-rebound heat short-circuit diagnostic device provided in Embodiment 3 of the present invention. Figure 4 As shown, the device includes: The parameter acquisition module 410 is used to acquire real-time collected parameters when the tobacco is loose and rehydrated, and to determine basic characteristic parameters based on the real-time collected parameters. The preliminary static diagnosis module 420 is used to establish thermal short circuit static diagnosis rules based on real-time acquired parameters and basic characteristic parameters, and to perform preliminary static diagnosis of thermal short circuit based on the thermal short circuit static diagnosis rules. The dynamic response test module 430 is used to perform dynamic response testing when a thermal short circuit is initially determined to be triggered; wherein, the dynamic response test includes humidification disturbance test and steam response test; The fusion diagnostic module 440 is used to perform fusion diagnostics based on preliminary static diagnosis and dynamic response testing to determine the results of loose moisture heat short circuit diagnosis.

[0121] Optional, parameter acquisition module, specifically used for: Temperature sensors are used to obtain the inlet hot air temperature, circulating air temperature, outlet material temperature, and ambient temperature when the tobacco is loosened and rehydrated. The opening degree of the dehumidification damper when the tobacco is loosened and re-moistened is obtained by using a damper opening sensor; The steam flow rate when the tobacco is loosened and rehydrated is obtained by using a steam flow meter; The data processor calculates the real-time acquired data to determine the basic characteristic parameters; wherein, the real-time acquired data includes inlet hot air temperature, circulating air temperature, outlet material temperature, ambient temperature, exhaust damper opening, and steam flow rate; the basic characteristic parameters include first temperature difference, second temperature difference, and system thermal efficiency. The first temperature difference is determined based on the difference between the inlet hot air temperature and the circulating air temperature, the second temperature difference is determined based on the difference between the circulating air temperature and the outlet material temperature, and the system thermal efficiency is determined based on the inlet hot air temperature, the outlet material temperature, and the ambient temperature.

[0122] Optional, preliminary static diagnostic module, specifically used for: When the first temperature difference is greater than the first preset temperature difference threshold and the second temperature difference is less than the second preset temperature difference threshold, a first static diagnostic rule for thermal short circuit is established; wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold. When the first temperature difference is greater than the first preset temperature difference threshold and the opening of the exhaust damper is greater than the preset exhaust damper opening threshold, a second static diagnosis rule for heat short circuit is established. When the system thermal efficiency is less than the preset system thermal efficiency threshold, a third static diagnostic rule for thermal short circuit is established.

[0123] Optional, preliminary static diagnostic module, specifically used for: When the first static diagnostic rule is established and the second static diagnostic rule is established, or when the first static diagnostic rule is established and the third static diagnostic rule is established, it is preliminarily determined that a thermal short circuit has been triggered.

[0124] Optionally, the dynamic response test includes a tidal disturbance test; the dynamic response test module is specifically used for: Increase the opening of the exhaust damper from the current value to the preset exhaust damper opening value, and maintain the preset time interval to determine the change in circulating air temperature and the change in outlet material temperature. The humidity sensitivity coefficient of the circulating air temperature is determined based on the change in circulating air temperature and the preset humidity exhaust damper opening value. The moisture sensitivity coefficient of the outlet material temperature is determined based on the change in outlet material temperature and the preset opening value of the exhaust damper. Based on the moisture sensitivity coefficients of circulating air temperature and outlet material temperature, a diagnostic rule for moisture disturbance testing is established. Among them, when the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is less than the second preset moisture sensitivity coefficient, the first moisture disturbance test diagnosis rule is formulated. When the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is greater than or equal to the second preset moisture sensitivity coefficient, a second moisture disturbance test diagnosis rule is formulated. When the humidity sensitivity coefficient of the circulating air temperature is greater than or equal to the first preset humidity sensitivity coefficient, a third humidity disturbance test diagnosis rule is formulated.

[0125] Optionally, the dynamic response test further includes a steam response test, and the dynamic response test module is specifically used for: Increase the steam valve opening from the current value to a preset steam valve opening value, and maintain this for a preset time interval to determine the rate of increase after the circulating air temperature stabilizes. The steam response thermal sensitivity coefficient is determined based on the rise in circulating air temperature after stabilization and the preset steam valve opening value. Based on the aforementioned steam response thermal sensitivity coefficient, steam response test diagnostic rules are formulated; Among them, when the steam response thermal sensitivity coefficient is greater than or equal to the first preset steam response thermal sensitivity coefficient, the first steam response test diagnostic rule is formulated. When the steam response thermal sensitivity coefficient is less than the first preset steam response thermal sensitivity coefficient and greater than or equal to the second preset steam response thermal sensitivity coefficient, a second steam response test diagnostic rule is formulated. When the steam response thermal sensitivity coefficient is less than the second preset steam response thermal sensitivity coefficient, a third steam response test diagnostic rule is formulated.

[0126] Optional, fusion diagnostic module, specifically used for: When a thermal short circuit is initially determined to be triggered, if the dehumidification disturbance test meets the first or second dehumidification disturbance test diagnostic rule, and the steam response test meets the third steam response test diagnostic rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a composite short circuit. When a thermal short circuit is initially determined to be triggered, if the dehumidification disturbance test meets the first dehumidification disturbance test diagnosis rule or the second dehumidification disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a dehumidification excessive type short circuit. When the initial determination of the triggering thermal short circuit is that the dehumidification disturbance test meets the third dehumidification disturbance test diagnosis rule and the steam response test meets the third steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a steam failure type short circuit. When the preliminary static diagnosis meets the first static diagnosis rule, the tidal disturbance test meets the first tidal disturbance test diagnosis rule or the second tidal disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the loose re-humidification heat short circuit diagnosis result is determined to be a heat-free short circuit.

[0127] Optionally, the device further includes a four-dimensional comprehensive evaluation module, specifically used for: A four-dimensional evaluation index is constructed, which includes temperature difference characteristic index, thermal efficiency index, steam thermal effectiveness index, and pressure stability index. The four-dimensional evaluation indicators are assigned weights and then summed using a weighted average to determine the overall health score of the system. Based on the comprehensive health score of the system, the system is classified into health levels.

[0128] Optionally, the four-dimensional comprehensive evaluation module is further specifically used for: Temperature difference characteristic indicators are constructed based on the first and second temperature differences; Based on the system thermal efficiency and the preset thermal efficiency threshold, different thermal efficiency indices are established; The static heat contribution coefficient is determined based on the outlet material temperature, ambient temperature, and steam flow rate; the dynamic heat sensitivity coefficient is determined based on the static heat contribution coefficient, the historical benchmark static heat contribution coefficient, and the steam response test diagnostic rules; and a steam thermal effectiveness index is established based on the dynamic heat sensitivity coefficient. The pressure fluctuation coefficient is determined based on the maximum, minimum, and average pressure inside the drum within a preset monitoring time period; a pressure stability index is constructed based on the pressure fluctuation coefficient.

[0129] The loose moisture heat short circuit diagnostic device provided in this embodiment of the invention can perform the loose moisture heat short circuit diagnostic method provided in any of the above embodiments of the invention, and has the corresponding functions and beneficial effects of performing the loose moisture heat short circuit diagnostic method. For detailed process, please refer to the relevant operations of the loose moisture heat short circuit diagnostic method in the foregoing embodiments.

[0130] Example 4 Figure 5 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0131] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0132] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0133] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the loose moisture recirculation thermal short-circuit diagnostic method.

[0134] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication unit 19, or installed from storage unit 18, or installed from ROM 12. When the computer program is executed by processor 11, it performs the functions defined in the methods of the embodiments of the present invention.

[0135] In some embodiments, the loose moisture reabsorption heat short-circuit diagnostic method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the loose moisture reabsorption heat short-circuit diagnostic method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the loose moisture reabsorption heat short-circuit diagnostic method by any other suitable means (e.g., by means of firmware).

[0136] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0137] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0138] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0139] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0140] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0141] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0142] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0143] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for diagnosing short circuits caused by loose, rehydrated heat, characterized in that: The method includes: Acquire real-time sampling parameters when tobacco is loose and rehydrated, and determine basic characteristic parameters based on the real-time sampling parameters; A static diagnosis rule for thermal short circuit is established based on real-time collected parameters and basic characteristic parameters, and a preliminary static diagnosis of thermal short circuit is performed based on the aforementioned static diagnosis rule. When a thermal short circuit is initially determined to be triggered, a dynamic response test is conducted; wherein, the dynamic response test includes a humidification disturbance test and a steam response test; Based on preliminary static diagnosis and dynamic response testing, a fusion diagnosis was conducted to determine the results of the loose moisture reabsorption heat short circuit diagnosis.

2. The method according to claim 1, characterized in that, The process of acquiring real-time parameters when tobacco is loose and rehydrated, and determining basic characteristic parameters based on these real-time parameters, includes: Temperature sensors are used to obtain the inlet hot air temperature, circulating air temperature, outlet material temperature, and ambient temperature when the tobacco is loosened and rehydrated. The opening degree of the dehumidification damper when the tobacco is loosened and re-moistened is obtained by using a damper opening sensor; The steam flow rate when the tobacco is loosened and rehydrated is obtained by using a steam flow meter; The data processor calculates the real-time acquired data to determine the basic characteristic parameters; wherein, the real-time acquired data includes inlet hot air temperature, circulating air temperature, outlet material temperature, ambient temperature, exhaust damper opening, and steam flow rate; the basic characteristic parameters include first temperature difference, second temperature difference, and system thermal efficiency. The first temperature difference is determined based on the difference between the inlet hot air temperature and the circulating air temperature, the second temperature difference is determined based on the difference between the circulating air temperature and the outlet material temperature, and the system thermal efficiency is determined based on the inlet hot air temperature, the outlet material temperature, and the ambient temperature.

3. The method according to claim 1, characterized in that, Based on real-time acquired parameters and basic characteristic parameters, static diagnostic rules for thermal short circuits are established, including: When the first temperature difference is greater than the first preset temperature difference threshold and the second temperature difference is less than the second preset temperature difference threshold, a first static diagnostic rule for thermal short circuit is established; wherein, the first preset temperature difference threshold is greater than the second preset temperature difference threshold. When the first temperature difference is greater than the first preset temperature difference threshold and the opening of the exhaust damper is greater than the preset exhaust damper opening threshold, a second static diagnosis rule for heat short circuit is established. When the system thermal efficiency is less than the preset system thermal efficiency threshold, a third static diagnostic rule for thermal short circuit is established.

4. The method according to claim 3, characterized in that, A static diagnostic rule for thermal short circuits is established based on real-time acquired parameters and basic characteristic parameters. A preliminary static diagnosis of thermal short circuits is then performed based on this rule, including: When the first static diagnostic rule is established and the second static diagnostic rule is established, or when the first static diagnostic rule is established and the third static diagnostic rule is established, it is preliminarily determined that a thermal short circuit has been triggered.

5. The method according to claim 1, characterized in that, The dynamic response test includes tidal disturbance test; The dynamic response test, which is performed when a thermal short circuit is initially determined to be triggered, includes: Increase the opening of the exhaust damper from the current value to the preset exhaust damper opening value, and maintain the preset time interval to determine the change in circulating air temperature and the change in outlet material temperature. The humidity sensitivity coefficient of the circulating air temperature is determined based on the change in circulating air temperature and the preset humidity exhaust damper opening value. The moisture sensitivity coefficient of the outlet material temperature is determined based on the change in outlet material temperature and the preset opening value of the exhaust damper. Based on the moisture sensitivity coefficients of circulating air temperature and outlet material temperature, a diagnostic rule for moisture disturbance testing is established. Among them, when the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is less than the second preset moisture sensitivity coefficient, the first moisture disturbance test diagnosis rule is formulated. When the moisture sensitivity coefficient of the circulating air temperature is less than the first preset moisture sensitivity coefficient, and the moisture sensitivity coefficient of the outlet material temperature is greater than or equal to the second preset moisture sensitivity coefficient, a second moisture disturbance test diagnosis rule is formulated. When the humidity sensitivity coefficient of the circulating air temperature is greater than or equal to the first preset humidity sensitivity coefficient, a third humidity disturbance test diagnosis rule is formulated.

6. The method according to claim 1, characterized in that, The dynamic response test also includes a steam response test; The dynamic response test conducted upon initial determination of a thermal short circuit includes: Increase the steam valve opening from the current value to a preset steam valve opening value, and maintain this for a preset time interval to determine the rate of increase after the circulating air temperature stabilizes. The steam response thermal sensitivity coefficient is determined based on the rise in circulating air temperature after stabilization and the preset steam valve opening value. Based on the aforementioned steam response thermal sensitivity coefficient, steam response test diagnostic rules are formulated; Among them, when the steam response thermal sensitivity coefficient is greater than or equal to the first preset steam response thermal sensitivity coefficient, the first steam response test diagnostic rule is formulated; When the steam response thermal sensitivity coefficient is less than the first preset steam response thermal sensitivity coefficient and greater than or equal to the second preset steam response thermal sensitivity coefficient, a second steam response test diagnostic rule is formulated. When the steam response thermal sensitivity coefficient is less than the second preset steam response thermal sensitivity coefficient, a third steam response test diagnostic rule is formulated.

7. The method according to any one of claims 1-6, characterized in that, The fusion diagnosis based on preliminary static diagnosis and dynamic response testing, to determine the loose moisture heat short-circuit diagnosis results, includes: When a thermal short circuit is initially determined to be triggered, if the dehumidification disturbance test meets the first or second dehumidification disturbance test diagnostic rule, and the steam response test meets the third steam response test diagnostic rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a composite short circuit. When a thermal short circuit is initially determined to be triggered, if the dehumidification disturbance test meets the first dehumidification disturbance test diagnosis rule or the second dehumidification disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a dehumidification excessive type short circuit. When the initial determination of the triggering thermal short circuit is that the dehumidification disturbance test meets the third dehumidification disturbance test diagnosis rule and the steam response test meets the third steam response test diagnosis rule, then the diagnosis result of the loose re-moistening thermal short circuit is determined to be a steam failure type short circuit. When the preliminary static diagnosis meets the first static diagnosis rule, the tidal disturbance test meets the first tidal disturbance test diagnosis rule or the second tidal disturbance test diagnosis rule, and the steam response test meets the first steam response test diagnosis rule or the second steam response test diagnosis rule, then the loose re-humidification heat short circuit diagnosis result is determined to be a heat-free short circuit.

8. The method according to claim 1, characterized in that, The method further includes: A four-dimensional evaluation index is constructed, which includes temperature difference characteristic index, thermal efficiency index, steam thermal effectiveness index, and pressure stability index. The four-dimensional evaluation indicators are assigned weights and then summed using a weighted average to determine the overall health score of the system. Based on the comprehensive health score of the system, the system is classified into health levels.

9. The method according to claim 8, characterized in that, The construction of the four-dimensional evaluation index includes: Temperature difference characteristic indicators are constructed based on the first and second temperature differences; Based on the system thermal efficiency and the preset thermal efficiency threshold, different thermal efficiency indices are established; The static heat contribution coefficient is determined based on the outlet material temperature, ambient temperature, and steam flow rate; the dynamic heat sensitivity coefficient is determined based on the static heat contribution coefficient, the historical benchmark static heat contribution coefficient, and the steam response test diagnostic rules; and a steam thermal effectiveness index is established based on the dynamic heat sensitivity coefficient. The pressure fluctuation coefficient is determined based on the maximum, minimum, and average pressure inside the drum within a preset monitoring time period; a pressure stability index is constructed based on the pressure fluctuation coefficient.

10. A loose, moisture-rebound heat short-circuit diagnostic device, characterized in that, The device includes: The parameter acquisition module is used to acquire real-time collected parameters when the tobacco is loose and rehydrated, and to determine basic characteristic parameters based on the real-time collected parameters. The preliminary static diagnosis module is used to establish static diagnosis rules for thermal short circuits based on real-time acquired parameters and basic characteristic parameters, and to perform preliminary static diagnosis of thermal short circuits based on the aforementioned static diagnosis rules. The dynamic response test module is used to perform dynamic response tests when a thermal short circuit is initially determined to be triggered; wherein, the dynamic response test includes a humidification disturbance test and a steam response test; The fusion diagnostic module is used to perform fusion diagnostics based on preliminary static diagnosis and dynamic response testing to determine the results of loose moisture heat short circuit diagnosis.

Images