A glass bottle annealing temperature field self-adaptive equalization control method and system

Abstract

The application relates to the field of glass product annealing control and discloses a glass bottle annealing temperature field self-adaptive equalization control method; the method acquires the occupancy state, the inlet temperature and the cumulative displacement of a conveying net belt of each bottle column of the glass bottle, converts the temperature adjusting effect of the bottle row during the effective action area of each temperature adjusting branch into equivalent heat action amount and forms a branch action record; a reference bottle row and an identified bottle row are determined from continuous bottle rows with comparable working conditions, under the condition of limiting the total equivalent heat action amount change of the annealing adjusting area, the different temperature adjusting branches form identifiable action amount change combinations, the actual heat response action relationship of each temperature adjusting branch to each bottle column is determined according to the inlet temperature, the outlet temperature and the branch action record of the corresponding bottle row; the total equivalent heat action amount is adjusted according to the overall heat state deviation of the bottle row, and the equivalent heat action amount of each temperature adjusting branch is redistributed according to the transverse imbalance deviation; the actual heat response of the subsequent bottle row is used to update the actual heat response action relationship.

Description

Technical Field

[0001] This invention relates to the field of annealing control for glass products, and specifically to an adaptive equalization control method and system for the annealing temperature field of glass bottles. Background Technology

[0002] As glass packaging production moves towards continuous and high-speed processes, glass bottles typically require continuous annealing in a mesh belt annealing furnace after molding to reduce internal stresses generated during molding and cooling. During annealing, the glass bottles sequentially pass through different temperature zones on a conveyor belt, undergoing heating, holding, and cooling according to a predetermined annealing process curve via electric heating, circulating hot air, or cooling air. Because the conveyor belt has a certain width, a single bottle row usually includes several rows of bottles distributed along the width of the belt. Therefore, in addition to temperature variations along the conveying direction, the transverse temperature uniformity between different rows within the same bottle row also affects the actual annealing state of the glass bottles.

[0003] Existing annealing furnace temperature control typically uses fixed temperature measurement positions or pre-defined temperature control zones within the furnace as the control objects. The heating power, circulating air volume, or cooling air volume of the corresponding zone is adjusted based on the deviation between the measured temperature and the set temperature. For annealing furnaces with multiple temperature-regulating branches along the width, the corresponding branches can be adjusted separately based on temperature differences at different lateral positions. However, in actual continuous production, electric heating radiation, circulating airflow, and lateral heat transfer within the furnace can cause a single temperature-regulating branch to simultaneously affect both its directly opposite and adjacent bottle rows. The actual lateral range of influence of each temperature-regulating branch is not strictly independent. Furthermore, changes in bottle type, bottle row occupancy, conveyor speed, and the operating status of the airflow path and heat source can alter these relationships. Therefore, pre-establishing fixed branch-to-bottle row correspondences based on the installation positions of the temperature-regulating branches can easily lead to the temperature adjustment operation of one bottle row simultaneously changing the temperature state of adjacent bottle rows, resulting in repeated adjustments or localized temperature difference migration.

[0004] Furthermore, glass bottles are continuously moving objects subject to heat dissipation treatment along the conveyor belt. The actual thermal effect experienced by a particular bottle row within the annealing conditioning zone depends not only on the current output of the temperature control branch but also on the actual position and dwell time of the bottle row as it enters and leaves different temperature control zones. When the conveyor speed changes or there are missing bottles in the row, it is difficult to accurately establish the correspondence between the inlet temperature of a particular bottle row, the actual temperature control effect experienced, and the downstream outlet temperature if feedback is based solely on fixed time delays or fixed spatial temperature measurements. Especially when it is necessary to correct lateral temperature unevenness, directly increasing the thermal effect in the colder areas or decreasing the thermal effect in the hotter areas may simultaneously change the total thermal effect experienced by the entire bottle row, causing the lateral temperature equalization to further deviate from the overall annealing thermal state of the bottle row. Therefore, how to accurately track the actual temperature control effect experienced by different bottle rows during continuous annealing, determine the actual thermal response relationship of different lateral temperature control branches to each bottle row, and achieve lateral temperature field equilibrium without excessively disturbing the overall annealing thermal state of the bottle row are technical problems that still need to be solved in current glass bottle annealing temperature control. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adaptive equalization control method and system for the annealing temperature field of glass bottles, thereby solving the technical problems existing in the prior art.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An adaptive equalization control method for the annealing temperature field of glass bottles includes: S1: At least two temperature-regulating branches are configured in the same annealing adjustment zone of the annealing furnace along the width direction of the conveyor belt, so that the lateral action range of adjacent temperature-regulating branches overlaps; the occupancy status and inlet temperature of each bottle row in each bottle row entering the annealing furnace are obtained, and the moving position of each bottle row is determined according to the cumulative displacement of the conveyor belt. S2: Based on the effective action area of ​​each temperature control branch along the conveying direction, the actual temperature control amount during the period when the bottle bar passes through the corresponding effective action area is converted into the equivalent heat action amount in a uniform heat unit, and the equivalent heat action amount is attributed to the corresponding bottle bar to form a branch action record. S3: Determine the reference bottle row and the identification bottle row from a continuous bottle row of the same glass bottle specification, where the bottle row occupancy status is consistent, the inlet temperature difference of each occupancy bottle row is not greater than the inlet temperature difference threshold, and the conveying speed difference is not greater than the conveying speed difference threshold. S4: During the identification of the bottle row passing through the annealing adjustment zone, at least two temperature-adjusting branches increase and decrease the equivalent heat effect relative to the corresponding reference bottle row, respectively, and the absolute value of the difference between the total equivalent heat effect in the annealing adjustment zone of the two branches is not greater than the total heat effect change threshold; obtain the difference of the equivalent heat effect of each temperature-adjusting branch of the continuously identified bottle row relative to its respective reference bottle row, and make the rank of the branch effect difference matrix formed by the equivalent heat effect difference equal to the number of temperature-adjusting branches participating in the identification. S5: Obtain the outlet temperature of the reference bottle row and the bottle row of each occupied bottle row at the downstream temperature acquisition position. Based on the inlet temperature difference, outlet temperature difference and branch action record of the corresponding occupied bottle row, determine the actual thermal response relationship of each temperature control branch to each occupied bottle row. S6: Obtain the outlet temperature of each occupied bottle column in the subsequent bottle row, and determine the overall thermal state deviation as the difference between the average outlet temperature of all occupied bottle columns and the target temperature corresponding to the annealing process curve of the current glass bottle specification at the downstream temperature acquisition position. Determine the difference between the outlet temperature of each occupied bottle column and the average outlet temperature as the lateral imbalance deviation of the corresponding bottle column. Adjust the total equivalent heat effect of the annealing adjustment zone according to the overall thermal state deviation, and redistribute the equivalent heat effect of each temperature adjustment branch according to the actual thermal response relationship, so that the absolute value of the change in the total equivalent heat effect before and after redistribution is not greater than the threshold of the total heat effect change. S7: Obtain the actual thermal response of the subsequent bottle row at the downstream temperature acquisition location after the equivalent heat action amount has been redistributed, and update the actual thermal response action relationship based on the actual thermal response.

[0007] Preferably, in S1: the inlet temperature acquisition location is divided into detection areas corresponding to each bottle row along the width of the conveyor belt; Temperature sampling data is acquired in each detection zone. Temperature sampling points that continuously cover the outline of the glass bottle in space within the detection zone are defined as bottle temperature sampling points. When there are bottle temperature sampling points in the detection zone, the corresponding bottle column is defined as a vacant bottle column, and the inlet temperature of the vacant bottle column is determined based on the bottle temperature sampling points. When there are no bottle temperature sampling points in the detection zone, the corresponding bottle column is defined as an unvacant bottle column. The occupancy status of each bottle row and the inlet temperature of each occupied bottle row are classified into the same bottle row during the same horizontal acquisition process, and the cumulative displacement of the bottle row when it passes the inlet temperature acquisition position is determined as the starting displacement of the bottle row.

[0008] Preferably, in S2: the start point and end point of the corresponding effective action area are determined according to the conveying direction range of the temperature-regulating branch that generates temperature regulation effect on the glass bottle, and the time when the bottle row enters the start point and leaves the end point is determined according to the initial displacement and cumulative displacement. For temperature control branches that input heat into the effective action zone through a heat source, the equivalent heat action rate is determined based on the actual heat power of the heat source; for temperature control branches that input heat into the effective action zone or remove heat from the effective action zone through a heat exchange medium, the equivalent heat action rate is determined based on the mass flow rate of the heat exchange medium and the enthalpy difference when entering and leaving the effective action zone. The equivalent heat transfer rate during the period when the bottle is in the corresponding effective action zone is accumulated according to the residence time to obtain the equivalent heat transfer amount. The equivalent heat transfer amount corresponding to the input of heat into the glass bottle is taken as a positive value, and the equivalent heat transfer amount corresponding to the removal of heat from the glass bottle is taken as a negative value. The temperature-regulating branch, the equivalent heat effect, and the cumulative displacement interval of the bottle row through the corresponding effective action zone are correlated to form a branch action record.

[0009] Preferably, in S3: the inlet temperature difference threshold is determined based on the allowable inlet temperature fluctuation range of the annealing process corresponding to the current glass bottle specification; the conveying speed difference threshold is determined based on the allowable residence time variation range corresponding to the effective action zone; and the total heat effect variation threshold is determined based on the allowable average outlet temperature fluctuation range of the annealing process corresponding to the current glass bottle specification and the benchmark equivalent heat effect of the annealing adjustment zone. For the two candidate bottle rows, the bottle row occupancy position, the inlet temperature of the bottle row with the same occupancy position, and the average conveying speed during the annealing conditioning zone are compared sequentially. When two candidate bottle rows have the same bottle row position, the inlet temperature difference of all identical bottle rows is not greater than the inlet temperature difference threshold, and the average conveying speed difference is not greater than the conveying speed difference threshold, the candidate bottle row that passes through the annealing adjustment zone first will be determined as the reference bottle row, and the candidate bottle row that passes through the annealing adjustment zone later will be determined as the identification bottle row.

[0010] Preferably, in S4 and S5: according to the arrangement order of each temperature-regulating branch participating in the identification, the equivalent heat difference between each temperature-regulating branch between an identification bottle row and the corresponding reference bottle row is used to form a branch action difference vector, and the branch action difference vectors corresponding to the continuous identification bottle rows are used to form a branch action difference matrix. When the number of temperature-regulating branches involved in identification is m and the rank of the branch action difference matrix is ​​less than m, the identification bottle rows are determined from the subsequent bottle rows, and the branch action difference vector formed by the newly identified bottle rows is made linearly independent from the existing branch action difference vector, until the rank of the branch action difference matrix is ​​equal to m. The corrected temperature response of the same occupant bottle row is obtained by subtracting the inlet temperature difference from the outlet temperature difference between the identified bottle row and the corresponding reference bottle row. Based on the branch action difference matrix and the corrected temperature response corresponding to each stationary bottle column, the direction and response amplitude of the change of equivalent heat action of each temperature regulating branch on the temperature response of each stationary bottle column are determined, and the actual thermal response relationship is formed by the direction and response amplitude.

[0011] Preferably, after the initial actual thermal response relationship is formed through S5, when the actual thermal response relationship is re-identified using the newly added identification bottle array: Before applying the equivalent heat effect change to the newly identified bottle row, the predicted temperature change corresponding to each stationary bottle row is determined based on the current actual thermal response relationship and the equivalent heat effect change of each temperature regulation branch to be applied. The predicted outlet temperature of each stationary bottle row at the downstream temperature acquisition position is determined in combination with the inlet temperature of the newly identified bottle row. When the predicted outlet temperature of each stationary bottle column is within the allowable temperature range of the annealing process curve corresponding to the current glass bottle specification at the downstream temperature acquisition location, the equivalent heat transfer change is performed. When the predicted outlet temperature of at least one stationary bottle column exceeds the allowable temperature range, the corresponding change amplitude is reduced while keeping the direction of change of the equivalent heat effect of each temperature-regulating branch unchanged, and the predicted outlet temperature is re-determined until the predicted outlet temperature of each stationary bottle column is within the allowable temperature range.

[0012] Preferably, in S6: The allowable deviation range of the overall thermal state is determined based on the allowable temperature deviation at the downstream temperature acquisition location of the annealing process curve corresponding to the current glass bottle specifications, and the allowable deviation range of the lateral temperature is determined based on the allowable lateral temperature difference corresponding to the current glass bottle specifications. When the overall thermal state deviation exceeds the allowable range of the overall thermal state deviation, the total equivalent heat action is adjusted according to the direction of the overall thermal state deviation. When the lateral imbalance deviation of at least one occupant bottle row exceeds the allowable lateral temperature deviation range, the equivalent heat effect of each temperature-regulating branch is redistributed.

[0013] Preferably, the redistribution of the equivalent heat effect of each temperature-regulating branch includes: Based on the occupant bottle row whose lateral imbalance deviation exceeds the allowable lateral temperature deviation range, the temperature control branch that generates the temperature response for the occupant bottle row is determined from the actual thermal response relationship. The direction of change of the equivalent heat effect that reduces the lateral imbalance deviation is determined based on the temperature response direction of each temperature-regulating branch, and the magnitude of change of the equivalent heat effect of each temperature-regulating branch is determined based on the corresponding response magnitude. The temperature response of the above-mentioned equivalent heat action quantity change to other stationary bottle rows is determined based on the actual thermal response relationship. Under the condition that the equivalent heat effect of each temperature-regulating branch is within its own adjustable range, and the absolute value of the change in the total equivalent heat effect before and after redistribution is not greater than the threshold value of the change in total heat effect, determine the equivalent heat effect of each temperature-regulating branch after redistribution.

[0014] Preferably, in S7: From the subsequent bottle rows after the equivalent heat action is redistributed, the bottle rows whose glass bottle specifications and bottle row occupancy status are consistent with those when the current actual heat response relationship is formed, and whose inlet temperature and conveying speed meet the corresponding conditions in S3 are selected as the updated bottle rows. Based on the current actual thermal response relationship and the updated branch action record of the bottle row, determine the predicted temperature response of each occupied bottle row, obtain the actual temperature response of the corresponding occupied bottle row, and correct the response amplitude of the corresponding temperature control branch according to the difference between the predicted temperature response and the actual temperature response. When the current actual thermal response relationship is formed, the upper limit of the residual between the corrected temperature response of each stationary bottle column and the fitted temperature response calculated based on the actual thermal response relationship is determined as the thermal response deviation threshold. When the actual temperature response direction of the same temperature control branch is opposite to the temperature response direction in the current actual thermal response relationship for at least two consecutive updates of the bottle row, or when the absolute value of the difference between the predicted temperature response and the actual temperature response is continuously greater than the thermal response deviation threshold, the data corresponding to the temperature control branch is stopped from being used to update its actual thermal response relationship, and the allowable equivalent thermal effect change range of the temperature control branch participating in subsequent redistribution is reduced. Based on the actual thermal response relationship between the remaining temperature-regulating branches and the corresponding stationary bottle rows, the equivalent thermal change not borne by the temperature-regulating branch is distributed to the remaining temperature-regulating branches whose temperature response direction conforms to the lateral imbalance deviation correction direction.

[0015] An adaptive equalization control system for the annealing temperature field of glass bottles includes a conveyor belt, an annealing furnace, an inlet temperature acquisition unit, a displacement acquisition unit, a downstream temperature acquisition unit, a temperature adjustment status acquisition unit, and a controller. The annealing furnace includes an annealing conditioning zone, which has at least two temperature-regulating branches along the width of the conveyor belt. Each temperature-regulating branch has an effective working area along the conveying direction and a lateral working range along the width of the conveyor belt. The lateral working ranges of adjacent temperature-regulating branches overlap. The inlet temperature acquisition unit is set on the inlet side of the annealing furnace and covers each bottle row along the width of the conveyor belt to obtain the occupancy status and inlet temperature of each bottle row; the displacement acquisition unit is set correspondingly to the conveyor belt to obtain the cumulative displacement of the conveyor belt; the downstream temperature acquisition unit is set downstream of the annealing adjustment zone to obtain the outlet temperature of each occupied bottle row. The temperature control status acquisition unit is set up corresponding to each temperature control branch to acquire temperature control status data to determine the equivalent heat action rate of the corresponding temperature control branch. The temperature control status data is the actual heat power of the heat source, or the mass flow rate of the heat exchange medium, and the medium status data used to determine the enthalpy difference when the heat exchange medium enters and leaves the effective action zone. The controller is connected to the inlet temperature acquisition unit, displacement acquisition unit, downstream temperature acquisition unit, temperature regulation status acquisition unit and each temperature regulation branch, and includes a bottle row position processing unit, an equivalent heat effect processing unit, a thermal response identification unit, a balance control unit and a thermal response update unit. The bottle row position processing unit establishes the spatial correspondence between the bottle row and each effective action zone based on the occupancy status, inlet temperature and cumulative displacement of each bottle row; The equivalent heat treatment unit determines the equivalent heat effect of each temperature control branch to the corresponding bottle row based on the temperature control status data and forms a branch effect record. The thermal response identification unit forms a branch action difference matrix based on the equivalent thermal action difference between the reference bottle row and the identification bottle row. When the rank of the branch action difference matrix is ​​equal to the number of temperature-regulating branches participating in the identification, the actual thermal response relationship of each temperature-regulating branch to each occupied bottle row is determined based on the inlet and outlet temperatures of the corresponding bottle row. The equalization control unit adjusts the total equivalent heat effect of the annealing adjustment zone according to the overall thermal state deviation of the bottle row, and redistributes the equivalent heat effect of each temperature control branch according to the relationship between the lateral imbalance deviation and the actual thermal response, under the condition of limiting the change of the total equivalent heat effect. The thermal response update unit updates the actual thermal response relationship based on the actual thermal response generated by the redistributed bottle arrangement.

[0016] In summary, the present invention has the following main beneficial effects: This application identifies glass bottles entering the annealing furnace according to bottle rows and columns, and continuously determines the actual movement position of each bottle row within the annealing furnace by combining the cumulative displacement of the conveyor belt. The equivalent heat generated by the bottle row during its passage through the effective action zone of each temperature-regulating branch is attributed to the corresponding bottle row. This allows the inlet temperature, the actual heating process, and the downstream outlet temperature to establish a continuous correspondence based on the same bottle row. This avoids control deviations caused by changes in conveyor speed, missing bottle rows, and misalignment of bottle rows when relying solely on fixed temperature measurement positions or fixed time delays for temperature feedback. This achieves the effect of improving the accuracy of heat tracking and the targeted nature of temperature field control during continuous annealing of glass bottles.

[0017] This application selects comparable benchmark and identification bottle rows based on bottle specifications, bottle row occupancy, inlet temperature, and conveying speed. Under the condition of limiting the change in the total equivalent heat effect in the annealing conditioning zone, it enables different transverse temperature-regulating branches to form identifiable combinations of equivalent heat effect changes. Based on the inlet and outlet temperature differences between the benchmark and identification bottle rows, as well as the branch effect records, the actual thermal response relationship of each temperature-regulating branch to each bottle row is determined. This allows the control relationship between the temperature-regulating branches and the bottle rows to be determined by the thermal response in the actual production process, rather than by pre-fixing the installation position of the temperature-regulating branches. This enables the identification of cross-thermal effects between adjacent temperature-regulating branches, achieving the effect of accurately obtaining the actual range and degree of action of the transverse temperature-regulating branches without excessively disturbing the overall annealing thermal process of the glass bottles.

[0018] This application defines the deviation of the average outlet temperature of the bottle row from the target annealing temperature as the overall thermal state deviation, and the deviation of each occupied bottle row from the average outlet temperature of the bottle row as the lateral imbalance deviation. Control is achieved through adjustments to the total equivalent heat effect and the redistribution of lateral branches constrained by the total heat effect. Simultaneously, the actual thermal response relationship is continuously verified and updated based on the subsequent actual temperature response of the bottle rows. This allows for correction of overall temperature drift and lateral temperature unevenness using different control paths, reducing the secondary impact of lateral balance adjustment on the overall annealing state of the bottle rows. Ultimately, this improves the uniformity of the lateral annealing temperature of the glass bottles and enhances the adaptability of the control system to changes in equipment thermal state and operating conditions. Attached Figure Description

[0019] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0021] Example 1 refer to Figure 1 An adaptive equilibrium control method and system for the annealing temperature field of glass bottles is provided, which is applicable to a continuous annealing production line in which glass bottles are continuously fed into the annealing furnace by a conveyor belt and undergo heating, heat preservation and cooling processes in sequence within the annealing furnace.

[0022] In this embodiment, different lateral positions of the glass bottles along the width of the conveyor belt are defined as bottle rows. Glass bottles identified during the same lateral temperature acquisition process and located in similar positions along the conveying direction are grouped into the same bottle row. Bottle rows are not formed by mechanical isolation, but are processed objects established by the controller based on the inlet temperature acquisition results and the cumulative displacement of the conveyor belt.

[0023] In this embodiment, bottle arrays are used as the basic objects for position tracking, temperature regulation attribution, and thermal response identification.

[0024] Because the annealing furnace contains thermal radiation, circulating hot air, cooling airflow, and lateral heat transfer, the same temperature-regulating branch may have varying degrees of thermal effect on adjacent bottle rows in addition to its effect on the bottle row directly opposite it. Therefore, this embodiment does not pre-establish a fixed one-to-one correspondence between temperature-regulating branches and bottle rows. Instead, during the actual glass bottle production process, the actual thermal response relationship of the temperature-regulating branch on different bottle rows is determined based on the actual temperature response of the bottle rows after passing through each temperature-regulating branch.

[0025] The adaptive equalization control system for the annealing temperature field of glass bottles in this embodiment includes a conveyor belt, an annealing furnace, an inlet temperature acquisition unit, a displacement acquisition unit, a downstream temperature acquisition unit, a temperature adjustment status acquisition unit, and a controller.

[0026] The annealing furnace has at least one annealing conditioning zone, and at least two temperature-regulating branches are configured in the same annealing conditioning zone along the width of the conveyor belt.

[0027] The temperature control branch can be an electric heating branch, a circulating hot air branch, or a cooling air branch. Each temperature control branch can use the same temperature control method, or different temperature control methods can be used depending on the annealing stage.

[0028] Each temperature-regulating branch has an effective working area along the conveying direction and a lateral working range along the width of the conveyor belt.

[0029] The effective operating area refers to the region within which the temperature-regulating branch can exert a measurable direct temperature-regulating effect on the bottle pack when the bottle pack passes through the spatial range.

[0030] For electric heating branches, the effective working area is determined based on the installation length of the heating element and the main heat radiation coverage area; for circulating hot air branches or cooling air branches, the effective working area is determined based on the air outlet position, return air position, and the main airflow coverage area.

[0031] The start and end points of each effective action zone are determined during the installation and commissioning of the annealing furnace and converted into distances relative to the inlet temperature acquisition location, which are then stored in the controller.

[0032] Determination of lateral range of action and overlapping areas The initial lateral action range of each temperature-regulating branch is first determined based on the actual installation position of the heating element, hot air outlet, or cooling air outlet along the width of the conveyor belt.

[0033] During equipment debugging, while other temperature control branches maintain stable operation, the temperature control branch to be confirmed is made to produce a small temperature control change within the adjustment range allowed by the current glass bottle specifications, and the temperature change of each bottle row at the downstream temperature acquisition position is obtained.

[0034] If the temperature change of a certain bottle row before and after the temperature regulation effect continuously exceeds the measurement uncertainty range of the temperature acquisition unit, then the lateral position of the bottle row is determined as the actual lateral action range of the temperature regulation branch.

[0035] If two adjacent temperature control branches can both produce a stable temperature response exceeding the measurement uncertainty range for at least one identical bottle column, then it is determined that the lateral action ranges of the two temperature control branches overlap.

[0036] Therefore, the lateral range of action and its overlapping relationship are derived from the actual annealing equipment and actual thermal response, rather than being arbitrarily set by the controller.

[0037] The inlet temperature acquisition unit is located upstream of the controlled annealing adjustment zone to acquire the occupancy status and inlet temperature of each bottle row.

[0038] The downstream temperature acquisition unit is located downstream of the annealing adjustment zone and is used to acquire the outlet temperature of each bottle row after passing through the annealing adjustment zone.

[0039] The inlet temperature acquisition unit and the downstream temperature acquisition unit can employ linear infrared thermometers or thermal imaging thermometers. Before being put into operation, both units are calibrated using the same standard temperature source or a traceable temperature detection device to ensure that the inlet and outlet temperature data are under comparable temperature references.

[0040] The displacement acquisition unit can use a rotary encoder connected to the drive shaft or transmission shaft of the conveyor belt to obtain the cumulative displacement of the conveyor belt based on the calibration relationship between the encoder output pulses and the actual moving distance of the conveyor belt.

[0041] The temperature control status acquisition unit is set up in correspondence with each temperature control branch.

[0042] For electric heating branches, at least the actual active power should be collected; for temperature control branches that use hot or cooling air for heat exchange, at least the flow rate of the heat exchange medium and the medium state data used to determine the thermal state changes when the medium enters and leaves the effective action zone should be collected.

[0043] The controller is connected to each of the above-mentioned acquisition units and each temperature control branch, and performs bottle row position processing, equivalent heat effect processing, thermal response identification, equalization control and thermal response update.

[0044] Based on the outer diameter of the glass bottles being produced, the bottling pitch, and the lateral center position of each bottle row on the conveyor belt, the inlet temperature acquisition area is divided into detection zones corresponding to each bottle row.

[0045] After the glass bottle specifications are changed, the testing area is redefined based on the actual size of the new bottle and the bottling location.

[0046] To avoid misidentifying furnace walls, conveyor belts, or other high-temperature backgrounds as glass bottles, background temperature data for each detection zone is obtained before formal production begins, assuming no glass bottles are passing through.

[0047] Simultaneously, the normal inlet temperature range corresponding to the current glass bottle specifications and the measurement uncertainty of the temperature acquisition unit are obtained.

[0048] During formal production, the controller combines the geometric detection area of ​​the current bottle row, the background temperature distribution, and the normal inlet temperature range of the current specification glass bottle to identify the bottle temperature sampling area.

[0049] Sampling points located within the corresponding bottle row detection area, continuously distributed along the width of the glass bottle, and having a distinguishable difference from the background temperature distribution, are identified as bottle temperature sampling points.

[0050] When a bottle temperature sampling area that meets the above conditions exists within a detection area, the corresponding bottle column is determined as an occupied bottle column; otherwise, the corresponding bottle column is determined as an unoccupied bottle column.

[0051] For the occupant bottle array, sampling points at the bottle mouth, bottle bottom, and locations with obvious abnormal reflections are removed, and the inlet temperature is determined based on the remaining effective temperature sampling points in the main body area of ​​the bottle.

[0052] The inlet temperature can be the average or median value of the effective temperature sampling points, and the inlet and outlet temperatures are determined using the same bottle temperature determination rules.

[0053] The occupancy status of each bottle column and the inlet temperature of each occupied bottle column are classified into the same bottle row during the same horizontal acquisition process. The cumulative displacement of the conveyor belt when the bottle row passes the inlet temperature acquisition position is recorded as the starting displacement of the bottle row.

[0054] The controller determines the actual conveying distance of the bottle pack based on the initial displacement of the bottle pack and the real-time cumulative displacement of the conveyor belt.

[0055] Let the cumulative displacement of the bottle pack as it passes the inlet temperature sampling position be... The cumulative displacement at any subsequent time step is The actual conveying distance of the bottle pack relative to the inlet temperature sampling location is: ; In the formula: Indicates the time when the bottles are arranged. The actual transport distance relative to the inlet temperature acquisition location; Indicates time The corresponding cumulative displacement of the conveyor belt; This indicates the cumulative displacement of the bottle as it passes the inlet temperature sampling location.

[0056] Based on the relationship between the actual conveying distance of the bottle pack and the starting and ending points of the effective working area of ​​each temperature-controlled branch, determine when the bottle pack enters and leaves the corresponding effective working area.

[0057] Therefore, even if the conveyor belt accelerates or decelerates during production, the temperature regulation effect is attributed to the actual spatial displacement of the bottle pack, and the position of the bottle pack is not inferred through a fixed time delay.

[0058] Different temperature control branches may employ different execution methods.

[0059] For example, the electric heating branch uses power to characterize the actual output, while the hot air or cooling air branch may use flow rate and medium temperature to characterize the heat exchange state. Therefore, the heating power, fan frequency and valve opening cannot be directly added together.

[0060] This embodiment first converts the actual temperature regulation effect of each temperature regulation branch to a unified heat scale.

[0061] For electric heating branches, the equivalent heat input to the effective area per unit time is determined based on the actual active power and the heat conversion characteristics of the corresponding heating structure.

[0062] For temperature control branches that use hot or cooling air for heat exchange, the equivalent heat effect per unit time is determined based on the actual mass flow rate of the heat exchange medium and the difference in thermal state before and after the heat exchange medium enters and leaves the effective action zone.

[0063] When the heat exchange medium is air, its thermal state can be determined based on the collected air temperature and corresponding air thermophysical property data; when the pressure or humidity changes cannot be ignored in the thermal state calculation, pressure or humidity data should be collected simultaneously.

[0064] This embodiment uniformly stipulates: When net heat is input into the effective area where the glass bottle is located, its equivalent heat effect is taken as a positive value; When net heat is removed from the effective area where the glass bottle is located, its equivalent heat effect is taken as negative.

[0065] Based on the actual time when the bottle bar enters and leaves the effective working area of ​​each temperature-regulating branch, the equivalent heat transfer rate during that period is accumulated according to the actual residence time to obtain the equivalent heat transfer amount of the temperature-regulating branch belonging to the current bottle bar.

[0066] The equivalent heat effect here is used to represent the magnitude of the heat effect experienced by different temperature control branches and different bottle rows in the same annealing equipment, and is not directly equivalent to the total heat actually absorbed by the glass bottle.

[0067] The actual temperature response of the glass bottle to this heat effect will be determined by the subsequent actual bottle row identification results.

[0068] The controller establishes a correlation between the bottle bar identifier, the temperature control branch identifier, the cumulative displacement range of the bottle bar through the corresponding effective action area, and the equivalent heat effect, forming a branch action record of the bottle bar.

[0069] This embodiment does not directly use any two bottle groups for thermal response identification, but instead selects bottle groups with comparable initial states.

[0070] First, the glass bottles in both bottles are of the same size.

[0071] Secondly, the two bottle rows have the same bottle column occupancy status, that is, the same horizontal bottle column position is either occupied or unoccupied.

[0072] Next, compare the inlet temperatures of the same row of occupant bottles.

[0073] The threshold for the inlet temperature difference is derived from the allowable inlet temperature fluctuation range of the annealing process corresponding to the current glass bottle specifications.

[0074] If the inlet temperature difference of any shared occupant bottle row exceeds the specified range, the two bottle rows do not constitute a reference bottle row and an identification bottle row.

[0075] It is also necessary to compare the conveying speeds of the two bottles during their passage through the annealing conditioning zone.

[0076] The conveying speed difference threshold is determined based on the effective working zone length and the allowable residence time variation range of the current annealing process.

[0077] In other words, instead of directly specifying a fixed speed difference, it ensures that the difference in the effective working zone residence time between the two bottle rows due to the speed difference does not exceed the allowable range of the glass bottle annealing process.

[0078] When all the above conditions are met, the bottle row that passes through the annealing adjustment zone first will be determined as the reference bottle row, and the bottle row that passes through later will be determined as the identification bottle row.

[0079] For bottle rows used to identify the relationship of the same actual thermal response, it is preferable to use the same glass bottle specifications and the same bottle row occupancy status.

[0080] When actively altering the transverse temperature regulation effect of the flask array, it is necessary to avoid excessive changes in the total thermal effect of the entire annealing regulation zone.

[0081] Therefore, during equipment debugging or process confirmation of the current glass bottle specifications, under the condition that the glass bottle specifications, bottle row occupancy status and conveying speed are stable, several small changes in total equivalent heat effect within the normal adjustable range are applied to the annealing adjustment zone, and the changes in the average outlet temperature of the corresponding bottle row are recorded.

[0082] This yields the actual correspondence between the change in total equivalent heat effect and the change in the average outlet temperature of the bottle in the vicinity of the current production conditions.

[0083] The annealing process documentation or process confirmation results for the current glass bottle specifications specify the allowable average outlet temperature fluctuation range.

[0084] In the correspondence obtained from equipment commissioning, the maximum total equivalent heat effect change that will not cause the average outlet temperature change to exceed the above allowable range is selected as the total heat effect change threshold.

[0085] Therefore, the threshold for change in total heat effect originates from: The average outlet temperature fluctuation range allowed by the current glass bottle specifications; And the actual thermal response data of the annealing furnace under this operating condition.

[0086] It is not arbitrarily set by the control program.

[0087] When the system first establishes the actual thermal response relationship for the current glass bottle specifications, there is no thermal response relationship that can be used for prediction. Therefore, the initial identification does not depend on the thermal response data generated later.

[0088] The allowable variation range of each temperature control branch is initially identified and determined during equipment debugging or confirmation of current glass bottle specifications and processes.

[0089] Specifically, when the annealing furnace is operating stably and the outlet temperature of each bottle row is within the allowable process range, small-amplitude changes in action are applied to the temperature control branch in stages, and the maximum allowable action change range is determined by taking the actual outlet temperature of each downstream bottle row as still within the allowable range of the current annealing process as the boundary.

[0090] In actual identification, at least two temperature-controlled branches are made to increase and decrease the equivalent heat effect relative to the corresponding reference bottle row, respectively.

[0091] For example, one transverse temperature-regulating branch increases the thermal effect, while another transverse temperature-regulating branch reduces the thermal effect.

[0092] Meanwhile, the absolute value of the algebraic sum of the changes in the equivalent heat effect of all branches involved in the identification of temperature regulation must not exceed the aforementioned threshold for total heat effect change.

[0093] This allows the identification process to primarily alter the distribution of heat along the width of the conveyor belt, without excessively changing the average thermal state of the entire bottle pack.

[0094] It should be noted that the change in the total equivalent heat effect does not necessarily have to be exactly zero.

[0095] If the changes in the action quantities of all branches of the identification bottle row always strictly satisfy the algebraic sum of zero, then there is the same linear constraint among all the changes in action quantities, which may cause the effects of different subsequent temperature control branches to be unable to be identified separately.

[0096] Therefore, this embodiment allows for controlled small changes in total thermal effect within the threshold range of total thermal effect change.

[0097] This is one of the core algorithm processing methods retained in this embodiment.

[0098] Assuming there are currently a total of Each temperature-regulating branch circuit was involved in the identification.

[0099] For each set of reference bottle rows and identification bottle rows, calculate the difference in equivalent heat action between the identification bottle row and the corresponding reference bottle row on each temperature-controlled branch, and form a branch action difference vector according to a fixed temperature-controlled branch sequence.

[0100] After obtaining several sets of valid reference bottle rows and identification bottle rows, the branch action difference vectors of each set are arranged by row and column to form a branch action difference matrix. To ensure that the heat / effect of each temperature-regulating branch can be identified separately, rather than only obtaining a mixed response resulting from the combined changes of multiple branches, this embodiment requires: ; In the formula: Represents the branch action difference matrix; Indicates the number of temperature-regulating branches involved in the identification; This represents the rank of the branch action difference matrix.

[0101] If the rank of the matrix is ​​less than This indicates that there is an indistinguishable linear correlation among the existing combinations of temperature-regulating effects.

[0102] For example, if two temperature-regulating branches change synchronously at the same ratio throughout the entire identification process, it is impossible to determine which branch produced the corresponding response based on the outlet temperature.

[0103] At this point, instead of directly generating the final actual thermal response relationship, we continue to select the identified bottle clusters that meet the aforementioned comparable working conditions, and make the newly added bottle clusters adopt the branch action mode that is linearly independent of the existing change combination, until the resulting branch action difference matrix reaches full column rank.

[0104] After the reference bottle row and the identification bottle row pass the downstream temperature acquisition location, the collected outlet temperatures of each bottle row are assigned to the corresponding bottle row based on the bottle row identification and cumulative displacement.

[0105] For the same occupancy bottle row, the outlet temperature difference between the bottle row and the reference bottle row will be identified, and the inlet temperature difference between the two in the bottle row will be subtracted to obtain the corrected temperature response of the occupancy bottle row.

[0106] The reason for using the above-mentioned inlet temperature correction is that even if the reference bottle row and the identification bottle row have been screened through the inlet temperature difference threshold, there may still be a slight difference in their inlet temperatures.

[0107] Subtracting this initial difference from the outlet difference can reduce the impact of different initial thermal states of the bottle outlet on the judgment of branch thermal response.

[0108] Unoccupied bottle rows do not generate a bottle-corrected temperature response, nor do they use the furnace background temperature at the corresponding location to replace the glass bottle temperature.

[0109] The corrected temperature response corresponding to each valid identified bottle row is arranged according to the bottle row position to form bottle row corrected temperature response data.

[0110] After the branch action difference matrix satisfies the full column rank condition, a correspondence is established between the branch equivalent heat action difference of each identified bottle row and the corresponding bottle row corrected temperature response.

[0111] Let the branch action difference matrix be... The corrected temperature response of each bottle column forms a matrix. Then it can be expressed as: ; In the formula: This indicates the actual thermal response relationship between each temperature-regulating branch and each occupied bottle row; This represents the residuals caused by temperature measurement errors, operating condition disturbances that cannot be completely eliminated, and local nonlinearities.

[0112] matrix Each element in the equation represents the actual response of a change in the equivalent heat input of a temperature-controlled branch to the downstream temperature of a occupied bottle column under the current glass bottle size, current bottle column occupancy status, and current operating conditions.

[0113] When the amount of effective identification data exceeds the number of temperature-regulating branches involved in the identification, the least squares method can be used to obtain the results. .

[0114] This mathematical solution is a data processing method that can be directly implemented in this field, and this embodiment does not need to elaborate on its numerical solution steps one by one.

[0115] The key to this application lies not in which ordinary matrix solving algorithm is used, but in that the data used for the solution comes from an actual glass bottle production process that meets the following conditions: The glass bottles are of uniform specifications; the bottle rows occupy the same positions; the inlet temperature and conveying speed meet comparability requirements; each temperature-regulating action is assigned according to the actual spatial position of the bottle rows; the variation in the total equivalent heat effect is limited; and the branch action difference matrix meets the identifiable condition. Therefore, the obtained actual thermal response relationship reflects the cross-thermal effects between different transverse temperature-regulating branches and different bottle rows during the current actual annealing process.

[0116] After obtaining the initial actual thermal response relationship, if it is necessary to continue updating the relationship through new identified bottle rows, before actually changing the effect of the temperature control branch, it should be determined whether the proposed temperature control change will cause the bottle row outlet temperature to exceed the annealing process range.

[0117] First, a reference bottle row corresponding to the newly identified bottle row is determined from the bottle rows that meet the aforementioned conditions of comparable glass bottle specifications, bottle row occupancy status, inlet temperature, and conveying speed.

[0118] Since the reference bottle row has actually passed through the annealing conditioning zone, it has the actual outlet temperature of each occupant bottle row.

[0119] The predicted outlet temperature of the newly identified bottle row corresponding to the occupied bottle column is determined by three parts: The actual outlet temperature of the corresponding reference bottle during normal annealing process; The new feature identifies the inlet temperature difference between the bottle row and the corresponding baseline bottle row. And the predicted temperature change generated by the proposed application of the temperature-regulating branch based on the current actual thermal response relationship.

[0120] In other words, the outlet temperature is not directly taken as the change in inlet temperature and temperature regulation effect. Instead, the actual outlet state of the normal production benchmark bottle row is used as the baseline, and then the difference in inlet state and the incremental response generated by the added temperature regulation effect are corrected.

[0121] This new identification is allowed when the predicted outlet temperature of all occupant bottle rows is within the allowable temperature range of the annealing process corresponding to the current glass bottle specification.

[0122] If the predicted outlet temperature of at least one stationary bottle column exceeds the allowable range, the direction of change of each temperature-regulating branch remains unchanged, the magnitude of its change is gradually reduced, and the prediction is repeated until the predicted outlet temperature of all stationary bottle columns enters the allowable range.

[0123] In this way, subsequent identification will not unconstrain the alteration of the normal annealing state of the glass bottle in order to obtain thermal response data.

[0124] During normal equalization control, the outlet temperature of each occupied bottle row in the subsequent bottle row is obtained.

[0125] The average outlet temperature of the bottle row is determined based on the outlet temperatures of all occupied bottle rows.

[0126] The annealing process curve corresponding to the current glass bottle specifications has a target temperature at the downstream temperature acquisition location.

[0127] The difference between the average outlet temperature of the bottle and the target temperature is defined as the overall thermal state deviation.

[0128] Then, the outlet temperature of each occupied bottle row is compared with the average outlet temperature of that bottle row, and the difference is taken as the lateral imbalance deviation of the corresponding bottle row.

[0129] therefore: Overall thermal deviation indicates whether the entire bottle array is too hot or too cold overall; Lateral imbalance deviation indicates whether there is uneven temperature distribution between different lateral rows of bottles in the same bottle row.

[0130] The two types of deviations are controlled by different control paths.

[0131] The allowable deviation range of the overall thermal condition is derived from the allowable temperature fluctuation range specified by the downstream temperature acquisition location of the annealing process curve for the current glass bottle specifications.

[0132] The allowable deviation range of lateral temperature is derived from the current product annealing process or process quality confirmation requirements.

[0133] If the process documentation directly specifies the permissible deviation of each bottle row relative to the average temperature, then the corresponding range should be used directly.

[0134] If the process document uses the maximum permissible temperature difference between the highest and lowest temperatures of the same bottle row as the lateral uniformity index, then the permissible deviation boundary of each bottle row relative to the average temperature of the bottle row is determined based on the maximum permissible temperature difference, so that the difference between the controlled highest outlet temperature and the lowest outlet temperature does not exceed the permissible value of the process.

[0135] When the overall thermal state deviation is within the allowable range corresponding to the current glass bottle specifications, the total heat effect of the annealing adjustment zone will not be changed due to frequent fluctuations in normal temperature measurement.

[0136] When the average outlet temperature of the bottle is higher than the target temperature and exceeds the allowable deviation range of the overall thermal state, the total equivalent heat effect in the annealing adjustment zone is adjusted in the direction of reducing the average outlet temperature.

[0137] When the average outlet temperature of the bottle is lower than the target temperature and exceeds the allowable deviation range of the overall thermal state, the total equivalent heat effect in the annealing adjustment zone is adjusted in the direction of increasing the average outlet temperature.

[0138] Overall thermal state conditioning is mainly used to change the level of basic thermal effects experienced by the entire bottle row.

[0139] When the lateral imbalance deviation of at least one occupier row exceeds the allowable lateral temperature deviation range, the controller determines the temperature control branch that generates the thermal response for that row from the actual thermal response relationship.

[0140] Based on the actual temperature response direction of each temperature-regulating branch to the bottle row, determine the direction in which the equivalent heat effect of each branch needs to be increased or decreased.

[0141] Then, the adjustment range is determined based on the thermal response of each temperature-regulating branch.

[0142] When determining the adjustment amount of a certain temperature control branch, the temperature impact of the change in this branch on other bottle rows should be calculated based on the actual thermal response relationship, so as to avoid causing new large deviations in adjacent bottle rows in order to reduce the deviation of one bottle row.

[0143] The final horizontal redistribution result satisfies the following conditions: Each temperature control branch is within the actual adjustable range allowed by the corresponding heater, fan, valve and drive mechanism; The control changes of each temperature regulation branch will not cause the temperature of the corresponding glass bottle to exceed the allowable range of the current annealing process; The absolute value of the change in total equivalent heat effect in the annealing conditioning zone before and after redistribution shall not exceed the threshold value of the change in total heat effect; The degree of horizontal imbalance in the forecasts after redistribution is less than that before redistribution.

[0144] Therefore, when the average temperature of the bottle array is close to the target temperature and one side is hotter than the other, this embodiment prioritizes redistributing the heat effect between different transverse temperature control branches, rather than raising or lowering the annealing adjustment zone temperature as a whole.

[0145] After long-term operation of the annealing furnace, the air duct resistance, heating element performance, hot air flow state, or glass bottle loading state may change. Therefore, the actual thermal response relationship obtained initially is not permanently fixed.

[0146] After the function of the temperature control branch is redistributed, the bottle row selected from the subsequent bottle rows is the one with the same glass bottle specifications and bottle row occupancy status as the current thermal response relationship, and whose inlet temperature and conveying speed still meet the aforementioned comparable conditions.

[0147] The predicted temperature response is obtained based on the current actual thermal response relationship and the changes in branch action actually experienced by the updated bottle bank. The actual corrected temperature response is then obtained based on the inlet and outlet temperatures of the corresponding reference bottle bank and the updated bottle bank.

[0148] Compare the two.

[0149] The thermal response deviation threshold used to determine whether the thermal response relationship is still valid is not an arbitrary fixed value, but is determined based on the residual between the actual corrected temperature response and the fitted temperature response of each valid identified sample when the current actual thermal response relationship is formed.

[0150] In one implementation, the upper limit of the absolute value of the effective sample residual is used as the basic thermal response deviation boundary; when the measurement uncertainty of the temperature acquisition unit cannot be ignored, the corresponding measurement uncertainty is considered based on the residual boundary.

[0151] Therefore, the range of thermal response deviation is derived from the actual identification accuracy and actual measurement accuracy of this equipment.

[0152] New operational data is not immediately used to modify the actual thermal response relationship once it is obtained.

[0153] After adding the new valid updated samples to the dataset, we check again whether the branch effect difference data currently used for updating can still distinguish the independent effects of each temperature-regulating branch.

[0154] If the branch action difference matrix formed by the updated samples still satisfies the full column rank condition, then the actual thermal response action relationship can be updated using this set of data.

[0155] If the full-rank condition is not met temporarily, the new sample will only be saved as the current operational monitoring data and will not replace the original actual thermal response relationship based solely on the sample.

[0156] Once new valid samples are obtained and the current updated sample set satisfies the full column rank condition again, the thermal response relationship will be updated uniformly.

[0157] This process can prevent several temperature control branches from changing synchronously for a long time during normal production, which would cause the recalculated thermal response relationship to lose the branch distinguishability.

[0158] When the actual temperature response direction of the same temperature control branch is opposite to the response direction determined by the current actual thermal response relationship in at least two consecutive bottle rows that meet the update conditions, or when the difference between the predicted temperature response and the actual temperature response continuously exceeds the thermal response deviation range, it is not immediately judged as a specific mechanical fault, but rather it is first determined that the current thermal response effectiveness of the temperature control branch has decreased.

[0159] At this point, the current data corresponding to the temperature regulation branch is no longer used to update its thermal response relationship, and the allowable equivalent thermal effect variation of the temperature regulation branch in subsequent lateral equalization control is reduced.

[0160] The controller simultaneously queries the actual thermal response relationship between the other temperature control branches and the target bottle column.

[0161] If there are other temperature-regulating branches whose thermal response direction can correct the current lateral imbalance and still have a remaining adjustable range, then the part of the temperature regulation function that was originally planned to be undertaken by the branch with reduced thermal response effectiveness but was not performed will be transferred to the other temperature-regulating branches.

[0162] If there are no other temperature control branches that can simultaneously satisfy the constraints of temperature correction direction, equipment adjustable range, and total heat effect change, then the existing temperature control branches will remain within the safe operating range, and the current lateral temperature correction will not be forced to be completed.

[0163] When producing a specific glass bottle specification for the first time, the following information is obtained based on the actual product process documents, annealing equipment structure, and equipment debugging data: current glass bottle specification; detection areas for each bottle row; annealing process curve; allowable fluctuation range of inlet temperature; allowable fluctuation range of average outlet temperature; allowable range of lateral temperature; allowable residence time variation range; adjustable range of each temperature control branch; effective action area of ​​each temperature control branch; lateral action range and overlap state; total heat effect change threshold; and the allowable change range of the effect of the temperature control branch for the first time.

[0164] The above parameters are all derived from the actual product process, the actual equipment structure, or the aforementioned equipment debugging process.

[0165] When the specifications of a glass bottle change, the corresponding parameters should be re-determined based on the new bottle size, weight range, bottle arrangement, and annealing process.

[0166] When the bottle size, weight, loading pitch, or bottle arrangement changes relative to the original specifications, the actual thermal response relationship corresponding to the current glass bottle specifications is re-established.

[0167] The thermal response data of the original glass bottle specifications can be saved as historical data, but it does not directly replace the actual identification results of the new glass bottle specifications.

[0168] During normal and stable production, it is not necessary to continuously apply active identification changes to all bottle rows.

[0169] When the actual thermal response relationship can still keep the predicted temperature response within the range of thermal response deviation, the main functions are normal overall thermal state control and lateral balance control.

[0170] Only when it is necessary to update the thermal response relationship or when the thermal response deviation continues to expand, should a new identification bottle row be selected from the subsequent bottle rows that meet the comparable operating conditions.

[0171] Before the glass bottles enter the controlled annealing adjustment area, the inlet temperature acquisition unit identifies the occupancy status and inlet temperature of each bottle row, and establishes a bottle row record based on the cumulative displacement of the conveyor belt.

[0172] As the bottle pack moves with the conveyor belt, the actual position of the bottle pack relative to the effective working area of ​​each temperature-regulating branch is continuously determined based on the cumulative displacement.

[0173] After the bottle bar enters a certain effective action zone, the actual temperature control state of the corresponding temperature control branch is obtained, which is converted into an equivalent thermal effect on a uniform heat scale, and the branch action record of the bottle bar is formed according to the actual residence process of the bottle bar in the effective action zone.

[0174] When it is necessary to establish or update the actual thermal response relationship, a reference bottle row and an identification bottle row are determined from bottle rows that meet the comparable conditions in terms of glass bottle specifications, bottle row occupancy status, inlet temperature and conveying speed.

[0175] Under the condition of limiting the change of total equivalent heat effect in the entire annealing conditioning zone, the temperature control effect changes of different transverse temperature control branches corresponding to the identification bottle row are made to produce different directions of temperature control effect changes, and a branch effect difference matrix that can distinguish the effect of each temperature control branch is formed by several identification bottle rows.

[0176] Subsequently, the outlet temperature of the same reference bottle row and the identified bottle row are obtained. The outlet temperature difference is corrected according to the inlet temperature difference to obtain the corrected temperature response of the bottle row. The actual thermal response relationship of the temperature regulating branch to each bottle row is determined together with the change of the corresponding branch action quantity.

[0177] During normal operation, the overall thermal state deviation is determined based on the deviation of the average outlet temperature of the bottle row from the target annealing temperature, and the overall thermal effect level of the annealing conditioning zone is adjusted accordingly. The lateral imbalance deviation is determined based on the deviation of each occupied bottle row from the average outlet temperature of the bottle row, and the equivalent thermal effect is redistributed among each lateral temperature-regulating branch according to the actual thermal response relationship.

[0178] The actual temperature response generated by subsequent bottle arrays is used to verify the actual thermal response relationship. When the operating data still meets the identifiable conditions, the actual thermal response relationship is updated; when the actual response of a certain temperature control branch continues to deviate from the existing response relationship, the participation of that temperature control branch in subsequent regulation is restricted, and the corresponding regulation is undertaken by other temperature control branches that can generate the target temperature correction direction.

[0179] This results in an adaptive equilibrium control process for the annealing temperature field of glass bottles, which involves interconnected processes such as bottle state recognition, spatial position tracking, actual thermal effect attribution, constrained thermal response identification, overall thermal state control, lateral thermal effect redistribution, and subsequent response updates.

[0180] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for adaptive equilibrium control of the annealing temperature field of glass bottles, characterized in that, include: S1: At least two temperature-regulating branches are configured in the same annealing adjustment zone of the annealing furnace along the width direction of the conveyor belt, so that the lateral action range of adjacent temperature-regulating branches overlaps; the occupancy status and inlet temperature of each bottle row in each bottle row entering the annealing furnace are obtained, and the moving position of each bottle row is determined according to the cumulative displacement of the conveyor belt. S2: Based on the effective action area of ​​each temperature control branch along the conveying direction, the actual temperature control amount during the period when the bottle bar passes through the corresponding effective action area is converted into the equivalent heat action amount in a uniform heat unit, and the equivalent heat action amount is attributed to the corresponding bottle bar to form a branch action record. S3: Determine the reference bottle row and the identification bottle row from a continuous bottle row of the same glass bottle specification, where the bottle row occupancy status is consistent, the inlet temperature difference of each occupancy bottle row is not greater than the inlet temperature difference threshold, and the conveying speed difference is not greater than the conveying speed difference threshold. S4: During the identification of the bottle row passing through the annealing adjustment zone, at least two temperature control branches increase and decrease the equivalent heat effect relative to the corresponding reference bottle row, respectively, and the absolute value of the difference between the total equivalent heat effect in the annealing adjustment zone corresponding to the two branches is not greater than the total heat effect change threshold. Obtain the equivalent heat difference of each temperature-regulating branch relative to the respective reference bottle row of the continuous identification bottle row, and make the rank of the branch action difference matrix formed by the equivalent heat difference equal to the number of temperature-regulating branches participating in the identification. S5: Obtain the outlet temperature of the reference bottle row and the bottle row of each occupied bottle row at the downstream temperature acquisition position. Based on the inlet temperature difference, outlet temperature difference and branch action record of the corresponding occupied bottle row, determine the actual thermal response relationship of each temperature control branch to each occupied bottle row. S6: Obtain the outlet temperature of each occupied bottle column in the subsequent bottle row, and determine the overall thermal state deviation as the difference between the average outlet temperature of all occupied bottle columns and the target temperature corresponding to the annealing process curve of the current glass bottle specification at the downstream temperature acquisition position. Determine the difference between the outlet temperature of each occupied bottle column and the average outlet temperature as the lateral imbalance deviation of the corresponding bottle column. Adjust the total equivalent heat effect of the annealing adjustment zone according to the overall thermal state deviation, and redistribute the equivalent heat effect of each temperature adjustment branch according to the actual thermal response relationship, so that the absolute value of the change in the total equivalent heat effect before and after redistribution is not greater than the threshold of the total heat effect change. S7: Obtain the actual thermal response of the subsequent bottle row at the downstream temperature acquisition location after the equivalent heat action amount has been redistributed, and update the actual thermal response action relationship based on the actual thermal response.

2. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 1, characterized in that, In S1: The inlet temperature acquisition location is divided into detection zones along the width of the conveyor belt, corresponding to each bottle row; Temperature sampling data is acquired in each detection zone. Temperature sampling points that continuously cover the outline of the glass bottle in space within the detection zone are defined as bottle temperature sampling points. When there are bottle temperature sampling points in the detection zone, the corresponding bottle column is defined as a vacant bottle column, and the inlet temperature of the vacant bottle column is determined based on the bottle temperature sampling points. When there are no bottle temperature sampling points in the detection zone, the corresponding bottle column is defined as an unvacant bottle column. The occupancy status of each bottle row and the inlet temperature of each occupied bottle row are classified into the same bottle row during the same horizontal acquisition process, and the cumulative displacement of the bottle row when it passes the inlet temperature acquisition position is determined as the starting displacement of the bottle row.

3. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 2, characterized in that, In S2: The start and end points of the corresponding effective action zone are determined according to the conveying direction range of the temperature-regulating branch that generates temperature regulation effect on the glass bottle, and the time when the bottle row enters the start point and leaves the end point is determined according to the initial displacement and cumulative displacement. For temperature control branches that input heat into the effective action zone through a heat source, the equivalent heat action rate is determined based on the actual heat power of the heat source; for temperature control branches that input heat into the effective action zone or remove heat from the effective action zone through a heat exchange medium, the equivalent heat action rate is determined based on the mass flow rate of the heat exchange medium and the enthalpy difference when entering and leaving the effective action zone. The equivalent heat transfer rate during the period when the bottle is in the corresponding effective action zone is accumulated according to the residence time to obtain the equivalent heat transfer amount. The equivalent heat transfer amount corresponding to the input of heat into the glass bottle is taken as a positive value, and the equivalent heat transfer amount corresponding to the removal of heat from the glass bottle is taken as a negative value. The temperature-regulating branch, the equivalent heat effect, and the cumulative displacement interval of the bottle row through the corresponding effective action zone are correlated to form a branch action record.

4. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 3, characterized in that, In S3: the inlet temperature difference threshold is determined based on the allowable inlet temperature fluctuation range of the annealing process corresponding to the current glass bottle specification; the conveying speed difference threshold is determined based on the allowable residence time variation range corresponding to the effective action zone; and the total heat effect variation threshold is determined based on the allowable average outlet temperature fluctuation range of the annealing process corresponding to the current glass bottle specification and the benchmark equivalent heat effect of the annealing adjustment zone. For the two candidate bottle rows, the bottle row occupancy position, the inlet temperature of the bottle row with the same occupancy position, and the average conveying speed during the annealing conditioning zone are compared sequentially. When two candidate bottle rows have the same bottle row position, the inlet temperature difference of all identical bottle rows is not greater than the inlet temperature difference threshold, and the average conveying speed difference is not greater than the conveying speed difference threshold, the candidate bottle row that passes through the annealing adjustment zone first will be determined as the reference bottle row, and the candidate bottle row that passes through the annealing adjustment zone later will be determined as the identification bottle row.

5. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 4, characterized in that, In S4 and S5: According to the arrangement order of each temperature-regulating branch involved in the identification, the equivalent heat difference between each temperature-regulating branch between an identification bottle row and the corresponding reference bottle row is used to form a branch action difference vector, and the branch action difference vectors corresponding to the continuous identification bottle rows are used to form a branch action difference matrix. When the number of temperature-regulating branches involved in identification is m and the rank of the branch action difference matrix is ​​less than m, the identification bottle rows are determined from the subsequent bottle rows, and the branch action difference vector formed by the newly identified bottle rows is made linearly independent from the existing branch action difference vector, until the rank of the branch action difference matrix is ​​equal to m. The corrected temperature response of the same occupant bottle row is obtained by subtracting the inlet temperature difference from the outlet temperature difference between the identified bottle row and the corresponding reference bottle row. Based on the branch action difference matrix and the corrected temperature response corresponding to each stationary bottle column, the direction and response amplitude of the change of equivalent heat action of each temperature regulating branch on the temperature response of each stationary bottle column are determined, and the actual thermal response relationship is formed by the direction and response amplitude.

6. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 5, characterized in that, After the initial actual thermal response relationship is established through S5, when the actual thermal response relationship is re-identified using the newly added identification bottle array: Before applying the equivalent heat effect change to the newly identified bottle row, the predicted temperature change corresponding to each stationary bottle row is determined based on the current actual thermal response relationship and the equivalent heat effect change of each temperature regulation branch to be applied. The predicted outlet temperature of each stationary bottle row at the downstream temperature acquisition position is determined in combination with the inlet temperature of the newly identified bottle row. When the predicted outlet temperature of each stationary bottle column is within the allowable temperature range of the annealing process curve corresponding to the current glass bottle specification at the downstream temperature acquisition location, the equivalent heat transfer change is performed. When the predicted outlet temperature of at least one stationary bottle column exceeds the allowable temperature range, the corresponding change amplitude is reduced while keeping the direction of change of the equivalent heat effect of each temperature-regulating branch unchanged, and the predicted outlet temperature is re-determined until the predicted outlet temperature of each stationary bottle column is within the allowable temperature range.

7. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 6, characterized in that, In S6: The allowable deviation range of the overall thermal state is determined based on the allowable temperature deviation at the downstream temperature acquisition location of the annealing process curve corresponding to the current glass bottle specifications, and the allowable deviation range of the lateral temperature is determined based on the allowable lateral temperature difference corresponding to the current glass bottle specifications. When the overall thermal state deviation exceeds the allowable range of the overall thermal state deviation, the total equivalent heat action is adjusted according to the direction of the overall thermal state deviation. When the lateral imbalance deviation of at least one occupant bottle row exceeds the allowable lateral temperature deviation range, the equivalent heat effect of each temperature-regulating branch is redistributed.

8. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 7, characterized in that, The redistribution of the equivalent heat effect in each temperature-regulating branch includes: Based on the occupant bottle row whose lateral imbalance deviation exceeds the allowable lateral temperature deviation range, the temperature control branch that generates the temperature response for the occupant bottle row is determined from the actual thermal response relationship. The direction of change of the equivalent heat effect that reduces the lateral imbalance deviation is determined based on the temperature response direction of each temperature-regulating branch, and the magnitude of change of the equivalent heat effect of each temperature-regulating branch is determined based on the corresponding response magnitude. The temperature response of the above-mentioned equivalent heat action quantity change to other stationary bottle rows is determined based on the actual thermal response relationship. Under the condition that the equivalent heat effect of each temperature-regulating branch is within its own adjustable range, and the absolute value of the change in the total equivalent heat effect before and after redistribution is not greater than the threshold value of the change in total heat effect, determine the equivalent heat effect of each temperature-regulating branch after redistribution.

9. The adaptive equalization control method for the annealing temperature field of a glass bottle according to claim 8, characterized in that, In S7: From the subsequent bottle rows after the equivalent heat action is redistributed, the bottle rows whose glass bottle specifications and bottle row occupancy status are consistent with those when the current actual heat response relationship is formed, and whose inlet temperature and conveying speed meet the corresponding conditions in S3 are selected as the updated bottle rows. Based on the current actual thermal response relationship and the updated branch action record of the bottle row, determine the predicted temperature response of each occupied bottle row, obtain the actual temperature response of the corresponding occupied bottle row, and correct the response amplitude of the corresponding temperature control branch according to the difference between the predicted temperature response and the actual temperature response. When the current actual thermal response relationship is formed, the upper limit of the residual between the corrected temperature response of each stationary bottle column and the fitted temperature response calculated based on the actual thermal response relationship is determined as the thermal response deviation threshold. When the actual temperature response direction of the same temperature control branch is opposite to the temperature response direction in the current actual thermal response relationship for at least two consecutive updates of the bottle row, or when the absolute value of the difference between the predicted temperature response and the actual temperature response is continuously greater than the thermal response deviation threshold, the data corresponding to the temperature control branch is stopped from being used to update its actual thermal response relationship, and the allowable equivalent thermal effect change range of the temperature control branch participating in subsequent redistribution is reduced. Based on the actual thermal response relationship between the remaining temperature-regulating branches and the corresponding stationary bottle rows, the equivalent thermal change not borne by the temperature-regulating branch is distributed to the remaining temperature-regulating branches whose temperature response direction conforms to the lateral imbalance deviation correction direction.

10. An adaptive equalization control system for the annealing temperature field of a glass bottle, applicable to the adaptive equalization control method for the annealing temperature field of a glass bottle as described in any one of claims 1-9, characterized in that, It includes a conveyor belt, an annealing furnace, an inlet temperature acquisition unit, a displacement acquisition unit, a downstream temperature acquisition unit, a temperature regulation status acquisition unit, and a controller; The annealing furnace includes an annealing conditioning zone, which has at least two temperature-regulating branches along the width of the conveyor belt. Each temperature-regulating branch has an effective working area along the conveying direction and a lateral working range along the width of the conveyor belt. The lateral working ranges of adjacent temperature-regulating branches overlap. An inlet temperature acquisition unit is set on the inlet side of the annealing furnace and covers each bottle row along the width of the conveyor belt to obtain the occupancy status and inlet temperature of each bottle row; a displacement acquisition unit is set correspondingly to the conveyor belt to obtain the cumulative displacement of the conveyor belt. The downstream temperature acquisition unit is located downstream of the annealing conditioning zone and is used to acquire the outlet temperature of each stationary bottle row. The temperature control status acquisition unit is set up corresponding to each temperature control branch to acquire temperature control status data to determine the equivalent heat action rate of the corresponding temperature control branch. The temperature control status data is the actual heat power of the heat source, or the mass flow rate of the heat exchange medium, and the medium status data used to determine the enthalpy difference when the heat exchange medium enters and leaves the effective action zone. The controller is connected to the inlet temperature acquisition unit, displacement acquisition unit, downstream temperature acquisition unit, temperature regulation status acquisition unit and each temperature regulation branch, and includes a bottle row position processing unit, an equivalent heat effect processing unit, a thermal response identification unit, a balance control unit and a thermal response update unit. The bottle row position processing unit establishes the spatial correspondence between the bottle row and each effective action zone based on the occupancy status, inlet temperature and cumulative displacement of each bottle row; The equivalent heat treatment unit determines the equivalent heat effect of each temperature control branch to the corresponding bottle row based on the temperature control status data and forms a branch effect record. The thermal response identification unit forms a branch action difference matrix based on the equivalent thermal action difference between the reference bottle row and the identification bottle row. When the rank of the branch action difference matrix is ​​equal to the number of temperature-regulating branches participating in the identification, the actual thermal response relationship of each temperature-regulating branch to each occupied bottle row is determined based on the inlet and outlet temperatures of the corresponding bottle row. The equalization control unit adjusts the total equivalent heat effect of the annealing adjustment zone according to the overall thermal state deviation of the bottle row, and redistributes the equivalent heat effect of each temperature control branch according to the relationship between the lateral imbalance deviation and the actual thermal response, under the condition of limiting the change of the total equivalent heat effect. The thermal response update unit updates the actual thermal response relationship based on the actual thermal response generated by the redistributed bottle arrangement.

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