CN115342925A - Furnace top temperature monitoring method and system of graphitization furnace with deviation rectifying function - Google Patents
Furnace top temperature monitoring method and system of graphitization furnace with deviation rectifying function Download PDFInfo
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- 238000005087 graphitization Methods 0.000 title claims abstract description 97
- 238000012544 monitoring process Methods 0.000 title claims abstract description 67
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- 238000004458 analytical method Methods 0.000 claims description 28
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- 230000002159 abnormal effect Effects 0.000 description 2
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- 238000009529 body temperature measurement Methods 0.000 description 2
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- G01J5/0044—Furnaces, ovens, kilns
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The invention provides a method and a system for monitoring furnace top temperature of a graphitization furnace with a deviation rectifying function, wherein the method comprises the following steps: acquiring a first temperature value of the furnace top of the graphitization furnace measured by an infrared detection probe; acquiring current data of a heating module of the graphitization furnace; determining a second temperature value of the furnace top of the graphitization furnace based on the current data; when the difference value of the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation rectification operation on the infrared detection probe; and after the correction operation is finished, the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe is obtained again. The method for monitoring the furnace top temperature of the graphitization furnace with the deviation rectifying function realizes automatic deviation rectification and improves the accuracy of monitoring the furnace top temperature of the graphitization furnace.
Description
Technical Field
The invention relates to the technical field of graphitization furnaces, in particular to a method and a system for monitoring furnace top temperature of a graphitization furnace with a deviation rectifying function.
Background
The heat treatment is one of important factors influencing the heat conductivity of the graphene heat-conducting film, the heat treatment is divided into two steps of carbonization and graphitization, so that the requirement on equipment is very high, and the control of a sintering process, the graphitization temperature and the time is a key problem. Important process steps involve important equipment-carbonization and high-temperature graphitization furnaces. The high-temperature graphitization furnace is a vacuum graphitization furnace, and mainly applies graphitization of a polyimide film (PI film) and graphitization of a graphene film to form a high-heat-conduction graphite film. In the operation process of the high-temperature graphitization furnace, the internal temperature detection is particularly important, and because the internal temperature of the high-temperature graphitization furnace even reaches 3000 ℃, a common temperature sensor detection probe for contact detection is not suitable, a non-contact infrared detection probe is generally adopted, but compared with contact measurement, temperature measurement deviation is more prone to occur in non-contact measurement.
Disclosure of Invention
One of the purposes of the invention is to provide a method for monitoring the furnace top temperature of a graphitization furnace with a deviation rectifying function, which realizes automatic deviation rectification and improves the accuracy of monitoring the furnace top temperature of the graphitization furnace.
The embodiment of the invention provides a method for monitoring the furnace top temperature of a graphitization furnace with a deviation rectifying function, which comprises the following steps:
acquiring a first temperature value of the furnace top of the graphitization furnace measured by an infrared detection probe;
acquiring current data of a heating module of the graphitization furnace;
determining a second temperature value of the furnace top of the graphitization furnace based on the current data;
when the difference value of the first temperature value and the second temperature value is larger than a preset trigger threshold value, carrying out deviation rectifying operation on the infrared detection probe;
and after the correction operation is finished, the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe is obtained again.
Preferably, the determining a second temperature value of the roof of the graphitization furnace based on the current data includes:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data;
acquiring current data of the heating module behind the acquisition node as analysis data;
extracting features of the analysis data to obtain a plurality of feature values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
Preferably, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitization furnace;
the temperature measuring chamber comprises:
a housing configured in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the cavity; the infrared detection probe is embedded in the side surface of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitization furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitization furnace; the inner walls of the other chambers far away from the rotating platform are embedded with heating modules; an insulating layer is arranged between each chamber and the shell is made of insulating materials.
Preferably, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the infrared detection probe is subjected to a rectification operation, including:
controlling the operation of the heat generating modules in the cavities,
when each heating module reaches the corresponding preset temperature and is stable, the rotating platform is controlled to rotate, so that the infrared detection probe sequentially measures a third temperature value of each heating module in each cavity;
constructing a deviation correction feature set based on the third temperature values of the heating modules;
acquiring a preset deviation correction parameter library;
matching the deviation correcting characteristic set with each standard characteristic set in the deviation correcting parameter library to obtain a deviation correcting parameter set correspondingly associated with the standard characteristic set matched with the deviation correcting characteristic set;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
Preferably, the greenhouse further comprises:
the transparent baffle is arranged in a setting cavity of the shell, which is positioned around the monitoring window;
the baffle fixing body is detachably connected with the transparent baffle; the baffle fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is located, and a gear is arranged at the power output end of the motor and is meshed with a rack arranged on one side of the baffle fixing body; the motor drives the baffle fixing body to move up and down in the setting groove through a gear and a rack, so as to drive the baffle fixing body to move up and down with the transparent baffle, and the position of the monitoring window corresponding to the transparent baffle is changed;
when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, before performing a deviation rectification operation on the infrared detection probe, the method further includes:
controlling the motor to act to change the position of the monitoring window corresponding to the transparent baffle;
when the temperature is changed, measuring the first temperature value of the furnace top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
The invention provides a furnace top temperature monitoring system of a graphitization furnace with a deviation rectifying function, which comprises:
the temperature acquisition module is used for acquiring a first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module is used for acquiring current data of a heating module of the graphitization furnace;
the temperature determining module is used for determining a second temperature value of the furnace top of the graphitizing furnace based on the current data;
the deviation rectifying module is used for rectifying the deviation of the infrared detection probe when the difference value of the first temperature value and the second temperature value is greater than a preset trigger threshold value;
and the temperature acquisition module is also used for acquiring the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe again after the correction operation is finished.
Preferably, the temperature determining module determines a second temperature value of the furnace top of the graphitization furnace based on the current data, and performs the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data;
acquiring current data of the heating module behind the acquisition node as analysis data;
extracting features of the analysis data to obtain a plurality of feature values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
Preferably, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitization furnace;
the temperature measuring chamber comprises:
a housing configured in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the chamber; the infrared detection probe is embedded in the side surface of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitization furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitization furnace; the inner walls of the other chambers far away from the rotating platform are embedded with heating modules; an insulating layer is arranged between each chamber and the shell is made of insulating materials.
Preferably, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the deviation rectifying module performs a deviation rectifying operation on the infrared detection probe, and executes the following operations:
controlling the operation of the heat generating modules in the cavities,
when each heating module reaches the corresponding preset temperature and is stable, the rotating platform is controlled to rotate, and the infrared detection probe sequentially measures a third temperature value of each heating module in each cavity;
constructing a deviation correction feature set based on the third temperature values of the heating modules;
acquiring a preset deviation correction parameter library;
matching the deviation correcting characteristic set with each standard characteristic set in the deviation correcting parameter library to obtain a deviation correcting parameter set correspondingly associated with the standard characteristic set matched with the deviation correcting characteristic set;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
Preferably, the greenhouse further comprises:
the transparent baffle is arranged in a setting cavity of the shell, which is positioned around the monitoring window;
the baffle fixing body is detachably connected with the transparent baffle; the baffle fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is located, and a gear is arranged at the power output end of the motor and is meshed with a rack arranged on one side of the baffle fixing body; the motor drives the baffle fixing body to move up and down in the setting groove through a gear and a rack, so as to drive the baffle fixing body to move up and down with the transparent baffle, and the position of the monitoring window corresponding to the transparent baffle is changed;
when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, before the deviation rectifying module performs deviation rectifying operation on the infrared detection probe, the deviation rectifying module further performs the following operation:
controlling the motor to act to change the position of the monitoring window corresponding to the transparent baffle;
when the temperature is changed, the first temperature value of the furnace top of the graphitization furnace is measured again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a furnace top temperature monitoring method of a graphitization furnace with a deviation rectifying function according to an embodiment of the present invention;
FIG. 2 is a schematic view of a greenhouse according to an embodiment of the present invention;
FIG. 3 is a schematic view of another temperature measuring chamber according to an embodiment of the present invention;
FIG. 4 is a schematic view of a baffle fixing body according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a furnace top temperature monitoring system of a graphitization furnace with a deviation rectifying function in the embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a method for monitoring the furnace top temperature of a graphitization furnace with a deviation rectifying function, which comprises the following steps of:
step S1: acquiring a first temperature value of the furnace top of the graphitization furnace measured by an infrared detection probe;
step S2: acquiring current data of a heating module of the graphitization furnace;
and step S3: determining a second temperature value of the furnace top of the graphitization furnace based on the current data;
and step S4: when the difference value of the first temperature value and the second temperature value is larger than a preset trigger threshold value, carrying out deviation rectifying operation on the infrared detection probe;
step S5: and after the correction operation is finished, the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe is obtained again.
The working principle and the beneficial effects of the technical scheme are as follows:
the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe is an actual measured value and is the temperature of the position of the furnace top in the graphitization furnace measured by the infrared detection probe; the second temperature value determined through the current data is an energy generated through heating of the heating module, and a theoretical value is deduced; and determining whether the measurement is abnormal or not through the difference between the measured value and the theoretical value, and determining that the infrared detection probe has abnormal deviation when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, so that the deviation is eliminated through the deviation rectifying operation, the first temperature value is rewritten and measured after the deviation is eliminated, and the accuracy of the temperature measurement in the graphitization furnace is ensured. Wherein, the trigger threshold value can be set to any value of 5 to 30 degrees centigrade.
In one embodiment, said determining a second temperature value of the graphitization furnace roof based on said current data comprises:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data; when the graphitization furnace does not work, the current value is zero; when the heating device is operated, the current value is increased to a current value corresponding to the heating temperature rise, for example: 10A-50A; therefore, whether the graphitization furnace is heated or not can be determined through the change of the current value, and the current data after the graphitization furnace works can be acquired;
acquiring current data of the heating module behind the acquisition node as analysis data;
extracting features of the analysis data to obtain a plurality of feature values; the characteristic values include: the time length corresponding to the current data, the time point corresponding to the position of the current change in the current data, the current mean value before the current change and the current mean value lamp after the current change;
constructing a feature data set based on the plurality of feature values; arranging the characteristic values in sequence to construct a characteristic data set;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
The working principle and the beneficial effects of the technical scheme are as follows:
analyzing by integrating current data through a current-temperature analysis library constructed in advance to determine a temperature value of the furnace top of the graphitization furnace; the current-temperature analysis library is constructed based on a large amount of accurate measured data analysis; after the feature data sets are matched with the standard data sets in the current-temperature analysis library one by one, matching operation can be performed by calculating the similarity between the feature data sets and the standard data sets, wherein a similarity calculation formula is as follows:
in the formula, XSD is the similarity between the characteristic data set and the standard data set; t is a unit of i The ith data value in the characteristic data set; b is i The data value is the ith data value in the standard data set, and n is the total data number in the characteristic data set or the total data number in the standard data set; when the similarity is the maximum in the current-temperature analysis library, the two are determined to be matched.
In one embodiment, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitization furnace;
as shown in fig. 2, the temperature measuring chamber includes:
a housing 10 provided in a cylindrical shape;
a plurality of chambers 11 circumferentially distributed about the center of the housing 10;
a rotating platform 14 arranged in the middle of the chamber 11; the infrared detection probe 13 is embedded in the side surface of the rotating platform 14;
one of the chambers 11 is arranged on one side of the shell 10 close to the top of the graphitization furnace, and a monitoring window 12 is arranged at a position close to the inside of the top of the graphitization furnace; a heating module 15 is embedded on the inner wall of one side of the other chamber 11 far away from the rotating platform 14; an insulating layer is arranged between each chamber and the shell is made of insulating materials. The heating module 15 can adopt electric control heating; namely an electric heating wire controlled by a temperature controller.
Wherein, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the infrared detection probe 13 is subjected to a deviation rectification operation, which includes:
controls the operation of the heat generating module 15 in each of the chambers 11,
when each heating module 15 reaches the corresponding preset temperature and is stable, the rotating platform 14 is controlled to rotate, so that the infrared detection probe 13 sequentially measures a third temperature value of each heating module 15 in each chamber 11; for example: when the number of the chambers 11 is four, the preset temperature distribution of the heating modules 15 in the two chambers 11 beside the chamber 11 of the monitoring window 12 is 200 degrees and 300 degrees, and the preset temperature of the heating module 15 in the remaining one chamber 11 is set to be 50 degrees; the higher temperature is placed in the chamber 11 close to the graphitization furnace, and the lower temperature is set in the chamber 11 far away from the graphitization furnace, so that the influence of the high temperature of the graphitization furnace on the measurement of the heating module 15 with the lower temperature is avoided, and the accuracy of deviation correction is improved; in addition, the heating module 15 can also be set as a multi-temperature zone to realize the measurement of more point locations, thereby improving the accuracy of deviation correction;
constructing a deviation correction feature set based on the third temperature values of the heating modules 15; the heat generating modules 15 are numbered in advance, for example, clockwise, and the numbers are 0001, 0002 and 0003 … … respectively; sequencing the third temperature values according to the numbering sequence to form a deviation correction feature set;
acquiring a preset deviation correction parameter library;
matching the deviation correcting feature set with each standard feature set in the deviation correcting parameter library, and acquiring a deviation correcting parameter set correspondingly associated with the standard feature set matched with the deviation correcting feature set; the matching between the deviation correcting feature set and the standard feature set and the matching between the feature data set and the standard data set adopt the same mode, which is not described herein;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
The working principle and the beneficial effects of the technical scheme are as follows:
during the deviation rectifying action, the infrared detection probes sequentially detect the temperature of the heating modules in each cavity through the rotation of the rotating platform; determining the deviation of the infrared detection probe by measuring the temperature of the heating module and analyzing the actual temperature of the heating module; thereby realizing the deviation rectifying operation of the infrared detection probe.
In one embodiment, as shown in fig. 3, the greenhouse further comprises:
a transparent baffle 21 disposed in a setting cavity of the housing 10 around the monitoring window 12;
a baffle fixing body 22 detachably connected with the transparent baffle 21; the baffle fixing body 22 is arranged in a setting groove arranged below the monitoring window 12;
a motor 23, which is arranged in the chamber 11 where the monitoring window 12 is located, and the power output end of which is provided with a gear meshed with a rack 222 arranged on one side of the baffle fixing body 22; the motor drives the baffle fixing body 22 to move up and down in the setting groove through a gear and a rack 222, so as to drive the transparent baffle 21 to move up and down, and the position of the monitoring window 12 corresponding to the transparent baffle 21 is changed;
when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, before performing a deviation rectification operation on the infrared detection probe 13, the method further includes:
controlling the motor 23 to operate, so that the position of the monitoring window 12 corresponding to the transparent baffle plate 21 is changed;
when the temperature is changed, the first temperature value of the furnace top of the graphitization furnace is measured again through the infrared detection probe 13;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
The working principle and the beneficial effects of the technical scheme are as follows:
drive transparent plate washer 21 through motor 23 and remove, realized transform plate washer position, avoid measuring because dirty influence on the transparent plate washer 21, improved the accuracy of the triggering of the operation of rectifying a deviation. As shown in fig. 4, the baffle fixing body 22 includes an arc-shaped main body 221; the middle part of the arc-shaped main body 221 is provided with a rack 222; a transparent barrier fixing strip 223 symmetrically arranged at one end of the arc-shaped main body 221, wherein a plurality of fixing columns 224 are arranged on the transparent barrier fixing strip 223; the fixing posts 224 are matched with fixing holes on the stepped structures on both sides of the transparent baffle 21 to detachably connect the transparent baffle 21 and the baffle fixing body 22.
The invention provides a furnace top temperature monitoring system of a graphitization furnace with a deviation rectifying function, as shown in figure 5, comprising:
the temperature acquisition module 1 is used for acquiring a first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module 2 is used for acquiring current data of a heating module of the graphitization furnace;
the temperature determining module 3 is used for determining a second temperature value of the furnace top of the graphitization furnace based on the current data;
the deviation rectifying module 4 is used for rectifying the deviation of the infrared detection probe when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value;
the temperature obtaining module 1 is further configured to obtain the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe again after the correction operation is completed.
In one embodiment, the temperature determining module 3 determines a second temperature value of the furnace roof of the graphitization furnace based on the current data, and performs the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data;
acquiring current data of the heating module behind the acquisition node as analysis data;
extracting features of the analysis data to obtain a plurality of feature values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
In one embodiment, the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitization furnace;
the temperature measuring chamber comprises:
a housing configured in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the chamber; the infrared detection probe is embedded in the side surface of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitization furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitization furnace; the inner walls of the other chambers far away from the rotating platform are embedded with heating modules; an insulating layer is arranged between each chamber and the shell is made of insulating materials.
In one embodiment, when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, the deviation rectification module 4 performs a deviation rectification operation on the infrared detection probe, and performs the following operations:
controlling the operation of the heat generating modules in the cavities,
when each heating module reaches the corresponding preset temperature and is stable, the rotating platform is controlled to rotate, so that the infrared detection probe sequentially measures a third temperature value of each heating module in each cavity;
constructing a deviation correction feature set based on the third temperature values of the heating modules;
acquiring a preset deviation correction parameter library;
matching the deviation correcting characteristic set with each standard characteristic set in the deviation correcting parameter library to obtain a deviation correcting parameter set correspondingly associated with the standard characteristic set matched with the deviation correcting characteristic set;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
In one embodiment, the greenhouse further comprises:
the transparent baffle is arranged in a setting cavity of the shell, which is positioned around the monitoring window;
the baffle fixing body is detachably connected with the transparent baffle; the baffle fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is located, and a gear is arranged at the power output end of the motor and is meshed with a rack arranged on one side of the baffle fixing body; the motor drives the baffle fixing body to move up and down in the setting groove through a gear and a rack, so as to drive the baffle fixing body to move up and down with the transparent baffle, and the position of the monitoring window corresponding to the transparent baffle is changed;
when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, before the deviation rectifying module performs deviation rectifying operation on the infrared detection probe, the deviation rectifying module further performs the following operation:
controlling the motor to act to change the position of the monitoring window corresponding to the transparent baffle;
when the temperature is changed, measuring the first temperature value of the furnace top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A furnace top temperature monitoring method of a graphitization furnace with a deviation rectifying function is characterized by comprising the following steps:
acquiring a first temperature value of the furnace top of the graphitization furnace measured by an infrared detection probe;
acquiring current data of a heating module of the graphitization furnace;
determining a second temperature value of the furnace top of the graphitization furnace based on the current data;
when the difference value of the first temperature value and the second temperature value is larger than a preset trigger threshold value, performing deviation rectification operation on the infrared detection probe;
and after the correction operation is finished, the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe is obtained again.
2. The method for monitoring the furnace top temperature of the graphitization furnace with the deviation rectifying function as claimed in claim 1, wherein the step of determining the second temperature value of the graphitization furnace top based on the current data comprises the following steps:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data;
acquiring current data of the heating module behind the acquisition node as analysis data;
performing feature extraction on the analysis data to obtain a plurality of feature values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
3. The method for monitoring the furnace top temperature of the graphitization furnace with the deviation rectifying function as claimed in claim 1, wherein the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitizing furnace;
the temperature measuring chamber comprises:
a housing configured in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the chamber; the infrared detection probe is embedded in the side surface of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitization furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitization furnace; the inner walls of the other chambers far away from the rotating platform are embedded with heating modules; an insulating layer is arranged between each chamber and the shell is made of insulating materials.
4. The method for monitoring the furnace top temperature of the graphitization furnace with the deviation rectifying function as claimed in claim 3, wherein when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, the deviation rectifying operation is performed on the infrared detection probe, and the method comprises the following steps:
controlling the operation of the heat generating modules in the cavities,
when each heating module reaches the corresponding preset temperature and is stable, the rotating platform is controlled to rotate, so that the infrared detection probe sequentially measures a third temperature value of each heating module in each cavity;
constructing a deviation correction feature set based on the third temperature values of the heating modules;
acquiring a preset deviation correction parameter library;
matching the deviation correcting characteristic set with each standard characteristic set in the deviation correcting parameter library to obtain a deviation correcting parameter set correspondingly associated with the standard characteristic set matched with the deviation correcting characteristic set;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
5. The method for monitoring the furnace top temperature of the graphitization furnace with the deviation rectifying function as claimed in claim 3, wherein the temperature measuring chamber further comprises:
the transparent baffle is arranged in a setting cavity of the shell, which is positioned around the monitoring window;
the baffle fixing body is detachably connected with the transparent baffle; the baffle fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is located, and a power output end of the motor is provided with a gear which is meshed with a rack arranged on one side of the baffle fixing body; the motor drives the baffle fixing body to move up and down in the setting groove through a gear and a rack, so as to drive the baffle fixing body to move up and down with the transparent baffle, and the position of the monitoring window corresponding to the transparent baffle is changed;
when the difference between the first temperature value and the second temperature value is greater than a preset trigger threshold, before performing a deviation rectification operation on the infrared detection probe, the method further includes:
controlling the motor to act to change the position of the monitoring window corresponding to the transparent baffle;
when the temperature is changed, measuring the first temperature value of the furnace top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
6. The utility model provides a graphitizing furnace roof temperature monitoring system with function of rectifying, its characterized in that includes:
the temperature acquisition module is used for acquiring a first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe;
the current acquisition module is used for acquiring current data of a heating module of the graphitization furnace;
the temperature determining module is used for determining a second temperature value of the furnace top of the graphitizing furnace based on the current data;
the deviation rectifying module is used for rectifying the deviation of the infrared detection probe when the difference value of the first temperature value and the second temperature value is greater than a preset trigger threshold value;
and the temperature acquisition module is also used for acquiring the first temperature value of the furnace top of the graphitization furnace measured by the infrared detection probe again after the correction operation is finished.
7. The graphitization furnace top temperature monitoring system with deviation rectification function as claimed in claim 6, wherein the temperature determination module determines a second temperature value of the graphitization furnace top based on the current data, and performs the following operations:
monitoring the current value of the heating module in real time;
when the current value of the heating module is changed from zero to non-zero and the changed current value is within a preset current range, taking the time corresponding to the change of the current value of the heating module from zero to non-zero as an acquisition node of current data;
acquiring current data of the heating module behind the acquisition node as analysis data;
extracting features of the analysis data to obtain a plurality of feature values;
constructing a feature data set based on the plurality of feature values;
acquiring a preset current-temperature analysis library;
and matching the characteristic data set with each standard data set in the current-temperature analysis library one by one, and acquiring a temperature value which is correspondingly associated with the standard data set matched with the characteristic data set as the second temperature value.
8. The graphitizing furnace top temperature monitoring system with deviation rectifying function of claim 6, characterized in that the infrared detection probe is arranged in the temperature measuring chamber; the temperature measuring chamber is embedded in the side surface of the furnace top of the graphitization furnace;
the temperature measuring chamber comprises:
a housing configured in a cylindrical shape;
a plurality of chambers circumferentially distributed about a center of the housing;
the rotating platform is arranged in the middle of the chamber; the infrared detection probe is embedded in the side surface of the rotating platform;
one of the chambers is arranged on one side of the shell close to the top of the graphitization furnace, and a monitoring window is arranged at a position close to the inside of the top of the graphitization furnace; the inner walls of the other chambers far away from the rotating platform are embedded with heating modules; an insulating layer is arranged between each chamber and the shell is made of insulating materials.
9. The furnace top temperature monitoring system of the graphitization furnace with the deviation rectifying function as claimed in claim 8, wherein when the difference value between the first temperature value and the second temperature value is greater than a preset trigger threshold value, the deviation rectifying module performs deviation rectifying operation on the infrared detection probe, and executes the following operation:
controlling the operation of the heat generating modules in the cavities,
when each heating module reaches the corresponding preset temperature and is stable, the rotating platform is controlled to rotate, so that the infrared detection probe sequentially measures a third temperature value of each heating module in each cavity;
constructing a deviation correction feature set based on the third temperature values of the heating modules;
acquiring a preset deviation correction parameter library;
matching the deviation correcting characteristic set with each standard characteristic set in the deviation correcting parameter library to obtain a deviation correcting parameter set correspondingly associated with the standard characteristic set matched with the deviation correcting characteristic set;
and adjusting the parameters of the infrared detection probe based on the deviation correction parameter set.
10. The system for monitoring the furnace top temperature of a graphitization furnace with a deviation rectifying function as claimed in claim 8, wherein the temperature measuring chamber further comprises:
the transparent baffle is arranged in a setting cavity of the shell, which is positioned around the monitoring window;
the baffle fixing body is detachably connected with the transparent baffle; the baffle fixing body is arranged in a setting groove arranged below the monitoring window;
the motor is arranged in the cavity where the monitoring window is located, and a gear is arranged at the power output end of the motor and is meshed with a rack arranged on one side of the baffle fixing body; the motor drives the baffle fixing body to move up and down in the setting groove through a gear and a rack, so as to drive the baffle fixing body to move up and down with the transparent baffle, and the position of the monitoring window corresponding to the transparent baffle is changed;
when the difference value between the first temperature value and the second temperature value is larger than a preset trigger threshold value, before the deviation rectification module carries out deviation rectification operation on the infrared detection probe, the deviation rectification module further executes the following operation:
controlling the motor to act to change the position of the monitoring window corresponding to the transparent baffle;
when the temperature is changed, measuring the first temperature value of the furnace top of the graphitization furnace again through the infrared detection probe;
determining whether the difference value between the first temperature value and the second temperature value measured again is larger than a preset trigger threshold value; if not, the correction operation is not needed; and if so, performing deviation rectification operation on the infrared detection probe.
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