CN109520642A - The acquisition methods and device of glass furnace, thermocouple oxidation rate - Google Patents
The acquisition methods and device of glass furnace, thermocouple oxidation rate Download PDFInfo
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- CN109520642A CN109520642A CN201811244363.4A CN201811244363A CN109520642A CN 109520642 A CN109520642 A CN 109520642A CN 201811244363 A CN201811244363 A CN 201811244363A CN 109520642 A CN109520642 A CN 109520642A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/04—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in tank furnaces
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Abstract
This disclosure relates to a kind of glass furnace, the acquisition methods and device of thermocouple oxidation rate, glass furnace includes: tank furnace, first passage and second channel, the entrance of tank furnace is the feed opening of glass furnace, the outlet of tank furnace and the entrance of first passage connect, the outlet of first passage and the entrance of second channel connect, the outlet of second channel is the discharge port of glass furnace, in tank furnace, distance outlet horizontal range with tank furnace is at the first pre-determined distance, it is provided with the first thermocouple and manometric module, the second thermocouple is provided in first passage, third thermocouple is provided in second channel.The disclosure can in the channel of real-time monitoring glass furnace each thermocouple oxidation rate, so that the heating circuit in channel is adjusted according to the oxidation rate of thermocouple in process of production.
Description
Technical field
This disclosure relates to glass manufacturing area, and in particular, to the acquisition side of a kind of glass furnace, thermocouple oxidation rate
Method and device.
Background technique
In the production process of base plate glass, need to be added the batch of base plate glass, batch warp in glass furnace
Glass metal is formed after crossing high-temperature digestion, since there are bubbles and uneven body in the glass metal of formation, so needing in platinum channel
In the processing such as clarified glass metal, be homogenized.In order to guarantee base plate glass stability in process of production and equipment
Safety can carry out thermostatic control to each region using electric heating system at each section of platinum channel, with each to platinum channel
Duan Jinhang temperature-compensating.Needs of the platinum channel due to technological design, it will usually temperature measurement is carried out using solder type thermocouple,
Since the temperature of the thermometric environment of thermocouple is higher, and the material of thermocouple is platinum-rhodium alloy, and thermocouple is for a long time in high temperature ring
Operation can aoxidize under border, i.e., rhodium is readily volatilized (temperature is higher, and the rate of volatilization of rhodium is faster), and it is slow to will lead to thermocouple displays temperature
It is slow to reduce, the displays temperature distortion of thermocouple.Since temperature remains unchanged in setting platinum channel, and the temperature in platinum channel
It is to be detected by thermocouple, therefore as the runing time of glass furnace is longer, thermocouple displays temperature can continue to reduce, platinum
The corresponding heating circuit in golden channel can continue to increase heating power, cause the constant temperature of glass metal to increase, lead to inside glass
Generate defect, the service life of platinum channel reduces.
Summary of the invention
Purpose of this disclosure is to provide a kind of glass furnaces, the acquisition methods and device of thermocouple oxidation rate, to solve
The problem of being certainly unable to the oxidation rate of real-time monitoring thermocouple in the prior art.
To achieve the goals above, according to the first aspect of the embodiments of the present disclosure, a kind of glass furnace, the glass are provided
Kiln includes: tank furnace, first passage and second channel；
The entrance of the tank furnace is the feed opening of the glass furnace, the outlet of the tank furnace and entering for the first passage
Mouth connection, the outlet of the first passage are connect with the entrance of the second channel, and the outlet of the second channel is the glass
The discharge port of glass kiln；
In the tank furnace, the distance outlet horizontal range with the tank furnace is to be provided with the first thermocouple at the first pre-determined distance
And manometric module, first thermocouple are used to measure the temperature when glass metal in the tank furnace flows into the first passage,
The manometric module is used to measure the pressure of the outlet of the tank furnace；
It is provided with the second thermocouple in the first passage, is provided with third thermocouple in the second channel, described
Two thermocouples are used to measure the temperature of the glass metal in the first passage, and the third thermocouple is logical for measuring described second
The temperature of glass metal in road.
Optionally, the vertical range of first thermocouple and the manometric module is less than or equal to the second pre-determined distance.
Optionally, the second channel includes multiple subchannels, and one described is both provided in each subchannel
Three thermocouple, each third thermocouple are used to measure the temperature of glass metal in each subchannel.
Optionally, the first passage and the second channel are platinum channel, first thermocouple, described second
Thermocouple and the third thermocouple are platinum-rhodium alloy thermocouple.
According to the second aspect of an embodiment of the present disclosure, a kind of acquisition methods of thermocouple oxidation rate are provided, this is applied to
Glass furnace provided by the first aspect of open embodiment, which comprises
Obtain the second temperature variable quantity of second thermocouple measurement in preset first time window；
According to the length of the first time window, impact factor and the second temperature variable quantity, described second is determined
The oxidation rate of thermocouple, the impact factor are when the glass metal in the tank furnace flows into the first passage to described second
The influence of thermocouple；
Obtain the power variation in preset second time window in the second channel；
According to the length of second time window and the power variation, the oxidation speed of the third thermocouple is determined
Rate.
Optionally, it when the second channel includes multiple subchannels, is both provided with described in one in each subchannel
When third thermocouple, the power variation obtained in preset second time window in the second channel, comprising:
Obtain multiple power variations in second time window in the multiple subchannel；
The length according to second time window and the power variation determine the oxygen of the third thermocouple
Change rate, comprising:
According to second time window and the multiple power variation, determine described in each subchannel
The oxidation rate of third thermocouple.
Optionally, described according to the length of the first time window, impact factor and the second temperature variable quantity,
Before the oxidation rate for determining second thermocouple, the method also includes:
First pressure, preset normal pressure and first thermocouple measurement obtained according to the manometric module
First temperature determines the impact factor.
Optionally, the first pressure obtained according to the manometric module, preset normal pressure and first heat
First temperature of galvanic couple measurement, determines the impact factor, comprising:
First pressure, preset normal pressure and first thermocouple measurement obtained according to the manometric module
First temperature determines the impact factor using the first calculation formula；
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor the impact factor, TAFor first temperature, POFor the normal pressure, PXIt is described first
Pressure, K are preset first coefficient of relationship, and E is preset constant.
Optionally, described according to the length of the first time window, impact factor and the second temperature variable quantity, really
The oxidation rate of fixed second thermocouple, comprising:
According to the length of the first time window, impact factor and the second temperature variable quantity, calculated using second
Formula determines the oxidation rate of second thermocouple；
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of second thermocouple, △ TAFor the impact factor, △ TBFor second temperature
Variable quantity is spent, n is the length of the first time window.
Optionally, the length according to second time window and the power variation determine the third heat
The oxidation rate of galvanic couple, comprising:
According to the length of second time window and the power variation, described is determined by third calculation formula
The oxidation rate of three thermocouple；
The third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of the third thermocouple, △ P is the power variation, and m is second time
The length of window, λ are preset second coefficient of relationship.
According to the third aspect of an embodiment of the present disclosure, a kind of acquisition device of thermocouple oxidation rate is provided, this is applied to
Glass furnace provided by the first aspect of open embodiment, described device include:
First obtains module, for obtaining the second temperature of second thermocouple measurement in preset first time window
Variable quantity；
First determining module, for being become according to the length of the first time window, impact factor and the second temperature
Change amount, determines the oxidation rate of second thermocouple, and the impact factor is that the glass metal in the tank furnace flows into described the
To the influence of second thermocouple when one channel；
Second obtains module, for obtaining the power variation in preset second time window in the second channel；
Second determining module, for according to second time window length and the power variation, determine described in
The oxidation rate of third thermocouple.
Optionally, it when the second channel includes multiple subchannels, is both provided with described in one in each subchannel
When third thermocouple, the second acquisition module is used for:
Obtain multiple power variations in second time window in the multiple subchannel；
Second determining module is used for:
According to second time window and the multiple power variation, determine described in each subchannel
The oxidation rate of third thermocouple.
Optionally, before first determining module, described device further include:
Influence determining module, first pressure, preset normal pressure for obtaining according to the manometric module and described
First temperature of the first thermocouple measurement, determines the impact factor.
Optionally, the influence determining module is used for:
First pressure, preset normal pressure and first thermocouple measurement obtained according to the manometric module
First temperature determines the impact factor using the first calculation formula；
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor the impact factor, TAFor first temperature, POFor the normal pressure, PXIt is described first
Pressure, K are preset first coefficient of relationship, and E is preset constant.
Optionally, first determining module is used for:
According to the length of the first time window, impact factor and the second temperature variable quantity, calculated using second
Formula determines the oxidation rate of second thermocouple；
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of second thermocouple, △ TAFor the impact factor, △ TBFor second temperature
Variable quantity is spent, n is the length of the first time window.
Optionally, second determining module is used for:
According to the length of second time window and the power variation, described is determined by third calculation formula
The oxidation rate of three thermocouple；
The third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of the third thermocouple, △ P is the power variation, and m is second time
The length of window, λ are preset second coefficient of relationship.
It is obtained through the above technical solutions, the disclosure passes through the second thermocouple being arranged in the first passage of glass furnace
The second temperature variable quantity of second thermocouple measurement in preset first time window, thus according to the length of first time window
Degree, impact factor and second temperature variable quantity to determine the oxidation rate of the second thermocouple, then pass through the second of glass furnace and lead to
Road obtains the power variation in the second time window in second channel, thus according to the length of the second time window of glass furnace
Degree determines the oxidation of the third thermocouple in the second channel that glass furnace is arranged in the power variation in second channel
Rate.The disclosure can in the channel of real-time monitoring glass furnace each thermocouple oxidation rate, so as in process of production
The heating circuit in channel is adjusted according to the oxidation rate of thermocouple.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of glass furnace shown according to an exemplary embodiment.
Fig. 2 is a kind of structural schematic diagram of second channel shown in embodiment illustrated in fig. 1.
Fig. 3 is a kind of flow chart of the acquisition methods of thermocouple oxidation rate shown according to an exemplary embodiment.
Fig. 4 is the flow chart of the acquisition methods of another thermocouple oxidation rate shown according to an exemplary embodiment.
Fig. 5 is the matching line chart of a kind of first temperature and first pressure shown according to an exemplary embodiment.
Fig. 6 is a kind of block diagram of the acquisition device of thermocouple oxidation rate shown according to an exemplary embodiment.
Fig. 7 is the block diagram of the acquisition device of another thermocouple oxidation rate shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
Fig. 1 is a kind of structural schematic diagram of glass furnace shown according to an exemplary embodiment.As shown in Figure 1, glass
Kiln 100 includes: tank furnace 101, first passage 102 and second channel 103.
The entrance of tank furnace 101 is the feed opening of glass furnace 100, and the outlet of tank furnace 101 and the entrance of first passage 102 connect
It connects, the outlet of first passage 102 is connect with the entrance of second channel 103, and the outlet of second channel 102 is glass furnace 100
Discharge port.
In tank furnace 101, the distance outlet horizontal range with tank furnace 101 is to be provided with the first thermocouple 105 at the first pre-determined distance
With manometric module 104, the glass metal that the first thermocouple 105 is used to measure in tank furnace 101 flows into temperature when first passage 102,
Manometric module 104 is used to measure the pressure of the outlet of tank furnace 101.
It is provided with the second thermocouple 106 in first passage 102, third thermocouple 107 is provided in second channel 103, the
Two thermocouples 106 are used to measure the temperature of the glass metal in first passage 102, and third thermocouple 107 is for measuring second channel
The temperature of glass metal in 103.
Exemplary, the outlet of tank furnace 101 is connect with the entrance of first passage 102, and the outlet of first passage 102 is logical with second
The entrance in road 103 connects, and the outlet of second channel 103 is the discharge port of glass furnace 100.In the production process of base plate glass
In, it can be from the entrance of tank furnace 101, the i.e. batch of the feed opening investment base plate glass of glass cellar furnace 100, batch is through excessively high
Temperature forms glass metal after melting, due to, there are bubble and uneven body, needing to make glass metal from tank furnace 101 in the glass metal of formation
Outlet flows into first passage 102 and second channel 103, the processing such as to be clarified glass metal, be homogenized.To guarantee substrate glass
The safety of the stability and equipment of glass in process of production is needed at each section of platinum channel using electric heating system come to each
Region carries out thermostatic control, with to the progress temperature-compensating of each section of channel, the electric heating system of use can be heating circuit, heating
Circuit is divided into manual control circuit and automatic control loop according to the control model heated to channel, such as first passage 102 can
To be manual control circuit, the first heat can be set at first pre-determined distance of the outlet of tank furnace 101 (such as can be 1 meter)
Galvanic couple 105 and manometric module 104, i.e., the first thermocouple 105 and manometric module 104 are on same vertical plane, the first thermocouple
105 for measuring the temperature when glass metal in tank furnace 101 flows into first passage 102, and manometric module 104 is for measuring tank furnace
The pressure of 101 near exit, manometric module 104 for example can be pressure sensor, for measuring the phase between upper layer and lower layer
To pressure difference as pressure to be measured, the second thermocouple 106 is set in first passage 102 to measure in first passage 102
Glass metal temperature.Second channel 103 can use automatic control loop, in the second channel 103 setting third thermocouple
107 measure the temperature of the glass metal in second channel 103.
Optionally, the vertical range of the first thermocouple 105 and manometric module 104 is less than or equal to the second pre-determined distance.
Exemplary, the glass metal of 105 position of the first thermocouple moves downward, in order to more accurately determine pressure value
Influence to the first temperature value of the first thermocouple 105 measurement, manometric module 104 and the first thermocouple 105 can be set same
On one vertical plane, the vertical range of the first thermocouple 105 and manometric module 104 is less than or equal to the second pre-determined distance, for example,
The second pre-determined distance can be set as 0.5m, i.e. the vertical range of the first thermocouple 105 and manometric module 104 is less than or equal to
Above the first thermocouple 105 in the range of 0.5m, manometric module 104 can also be set up directly on by 0.5m, i.e. manometric module 104
For fixing the top of the box of the first thermocouple 105.The pressure that manometric module 104 can measure 101 near exit of tank furnace (should
Relative pressure of the pressure between upper layer and lower layer).
Fig. 2 is a kind of structural schematic diagram of second channel shown in embodiment illustrated in fig. 1.As shown in Fig. 2, second channel
103 include multiple subchannels, is both provided with a third thermocouple 107 in each subchannel, each third thermocouple 107 is used for
Measure the temperature of glass metal in each subchannel.
For example, second channel 103 includes three subchannels, the first subchannel 1031, the second subchannel 1032 and the
Three subchannels 1033 are provided with third thermocouple a in the first subchannel 1031 to measure glass metal in the first subchannel 1031
Temperature, be provided with third thermocouple b in the second subchannel 1032 to measure the temperature of glass metal in the second subchannel 1032,
Third thermocouple c is provided in third subchannel 1033 to measure the temperature of glass metal in the first subchannel 1033.
Optionally, first passage 102 and second channel 103 are platinum channel, the first thermocouple 105, the second thermocouple
106 and third thermocouple 107 be platinum-rhodium alloy thermocouple.
Exemplary, platinum channel high temperature resistant and chemical property stabilization are not susceptible to chemically react with glass metal, therefore, the
One channel 102 and second channel 103 are all made of platinum channel, and platinum rhodium thermocouple has accuracy highest in thermocouple series,
The advantages that stability is best, and the range for measuring temperature is wide, long service life, and the thermometric upper limit is high, therefore, the first thermocouple 105,
Two thermocouples 106 and third thermocouple 107 are all made of platinum-rhodium alloy thermocouple.
In conclusion glass furnace provided by the disclosure, by be arranged in the first passage of glass furnace second
Thermocouple obtains the second temperature variable quantity of the second thermocouple measurement in preset first time window, thus according at the first time
Length, impact factor and the second temperature variable quantity of window, to determine the oxidation rate of the second thermocouple, then pass through glass furnace
Second channel obtain the power variation in the second time window in second channel, thus according to the second time of glass furnace
Power variation in the length and second channel of window determines the third thermoelectricity in the second channel that glass furnace is arranged in
Even oxidation rate.The disclosure can in the channel of real-time monitoring glass furnace each thermocouple oxidation rate, so as in life
The heating circuit in channel is adjusted during production according to the oxidation rate of thermocouple.
Fig. 3 is a kind of flow chart of the acquisition methods of thermocouple oxidation rate shown according to an exemplary embodiment.Such as
Shown in Fig. 3, comprising the following steps:
In step 201, the second temperature variable quantity of the second thermocouple measurement in preset first time window is obtained.
In step 202, according to the length of first time window, impact factor and second temperature variable quantity, second is determined
The oxidation rate of thermocouple, impact factor are the influence when glass metal in tank furnace flows into first passage to the second thermocouple.
It is exemplary, by taking first passage is manual control circuit as an example, the oxidation rate of the second thermocouple is calculated, is obtained first
In preset first time window, the second temperature variable quantity of the second thermocouple acquisition arrived.Corresponding second temperature variable quantity
The temperature measured at the end of the temperature value that as the second thermocouple is measured when first time, window started, with first time window
The difference of value.For example, first time window can be set to 2 days durations, then second temperature variable quantity is the second thermocouple the
The difference of the temperature value of the temperature value and measurement in second day of measurement in one day.Since the oxidation rate of the second thermocouple is by glass metal
The influence of temperature change when flowing into first passage from tank furnace, it is therefore desirable to calculate impact factor, i.e. glass metal in tank furnace is from pond
Influence when furnace flows into first passage to the second thermocouple, impact factor can be rule of thumb manually set by staff,
It can also be arranged according to a large amount of empirical data, and adjustment in real time in process of production, can also be surveyed by the first thermocouple
The variation of temperature when glass metal flows into first passage from tank furnace is measured to determine impact factor, then according to first time window
Length, impact factor and second temperature variable quantity determine the oxidation rate of the second thermocouple.
In step 203, the power variation in preset second time window in second channel is obtained.
In step 204, according to the length and power variation of the second time window, the oxidation speed of third thermocouple is determined
Rate.
Exemplary, second channel can be automatic control loop, automatic control loop mainly in constant environment, because
This, third thermocouple is influenced to ignore by pressure, and due to that can guarantee region using heating circuit in second channel
Interior constant temperature, therefore the temperature that shows of third thermocouple is to maintain constant, is that the power of automatic control loop becomes accordingly
Change (in fact, the temperature that third thermocouple is shown persistently is reduced because of the oxidation of third thermocouple, still, due to the setting of system
Temperature remains unchanged, and set temperature and thermocouple detection temperature are linkage controls, and heating circuit can holding because of displays temperature
Continuing reduces and increases electrical heating power to keep displays temperature constant), so, third thermocouple oxidation rate is calculated, is needed
Temperature variation in second channel is converted into the power variation of automatic control loop to calculate.When obtaining preset second
Between power variation in window in second channel, corresponding power variation is that second channel starts in the second time window
When heating circuit performance number, with the second time window at the end of heating circuit performance number difference.For example, the second time window
Mouth can be 5 days, then power variation is the difference of the performance number of measurement in first day and the performance number of measurement in the 5th day.Again
According to the length and power variation of the second time window, the oxidation rate of third thermocouple is determined.
Optionally, when second channel includes multiple subchannels, when being both provided with a third thermocouple in each subchannel,
Step 203 may include:
Obtain multiple power variations in the second time window in multiple subchannels.
Step 204 may include:
According to the second time window and multiple power variations, the oxidation of the third thermocouple in each subchannel is determined
Rate.
It is exemplary, when second channel includes three subchannels, it is both provided with a third thermocouple in each subchannel,
The oxidation rate for obtaining third thermocouple can execute step 203 and 204 to each subchannel respectively and lead to obtain every height
The third thermocouple oxidation rate in road.
Fig. 4 is the flow chart of the acquisition methods of another thermocouple oxidation rate shown according to an exemplary embodiment.
As shown in figure 4, this method is further comprising the steps of before step 202:
In step 205, it is surveyed according to first pressure, preset normal pressure and the first thermocouple that manometric module obtains
First temperature of amount, determines impact factor.
Exemplary, impact factor is influence to the second thermocouple when the glass metal in tank furnace flows into first passage, can be with
Impact factor is determined by the first thermocouple, wherein impact factor also needs to consider the influence of pressure difference variation, that is, passes through acquisition
Whithin a period of time the first thermocouple measurement to the first temperature and the pressure variety that measures of measurement module influence to determine
The factor.Such as first can be calculated by linear fit according to the first temperature and first pressure being collected into production process
The coefficient of relationship of temperature and first pressure, coefficient of relationship, preset standard further according to obtained the first temperature and first pressure
Pressure, the first temperature and first pressure determine impact factor.Matching line chart with the first temperature shown in fig. 5 and first pressure is
Example, according to the first temperature and first pressure collected in production, passes through available first temperature of the Fitting Calculation and first pressure
There are following relationships: T=E+K × PX, wherein T be the first temperature, unit be DEG C, PXFor first pressure, unit Pa, K are quasi-
The coefficient of relationship of the first pressure and the first temperature that are calculated is closed, E is the constant that the Fitting Calculation obtains.For example, pressure is surveyed in setting
Module is above the first thermocouple at 0.5m, and according to the data collected in production, the first temperature and first pressure use Minitab
The obtained relationship of matched curve be T=1597-1.264 × PX。
Optionally, the first pressure that is obtained according to manometric module, preset normal pressure and the first thermocouple measurement the
One temperature, determines impact factor, comprising:
According to manometric module obtain first pressure, preset normal pressure and the first temperature of the first thermocouple measurement,
Impact factor is determined using the first calculation formula.
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor impact factor, TAFor the first temperature, POFor normal pressure, PXFor first pressure, K is preset the
One coefficient of relationship, E are preset constant.
For example, setting manometric module place 0.5m above the first thermocouple, the first temperature and first pressure use
The relationship that the matched curve of Minitab obtains is T=1597-1.264 × PX, wherein T is the first temperature, PXFor first pressure,
It is T=1597-1.264 × (P that first thermocouple, which excludes the temperature value influenced by pressure-difference fluctuation,X-PO), then the value of impact factor is
△TA=TA- T=TA-1597+1.264×(PX-PO), wherein normal pressure PO, unit Pa, everyday stress is around PO?
It is fluctuated between ± 1Pa, △ TAFor impact factor, unit is DEG C TAFor the first temperature, unit is DEG C that K is preset first relationship system
Number, E are preset constant.
Optionally, according to the length of first time window, impact factor and second temperature variable quantity, the second thermocouple is determined
Oxidation rate, comprising:
According to the length of first time window, impact factor and second temperature variable quantity, determined using the second calculation formula
The oxidation rate of second thermocouple.
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of the second thermocouple, △ TAFor impact factor, △ TBFor second temperature variable quantity, n is
The length of first time window.
It is exemplary, the second thermocouple measurement at the end of when second temperature variable quantity can be started by first time window
The difference of temperature value obtain, with the value of impact factor for △ TA=TA-1597+1.264×(PX-PO), first time window
Length be 5 days (i.e. n=5) for, the oxidation rate σ of the second thermocouple1=(△ TB-△TA)/n=(TBn-TB1-TA-1597+
1.264×(PX-PO))/5.Wherein, σ1For the oxidation rate of the second thermocouple, unit is DEG C/day, △ TAIt is single for impact factor
Position for DEG C, △ TBFor second temperature variable quantity, unit is DEG C that n is the length of first time window, and unit is day, TBnIt is first
The temperature value of the second thermocouple measurement in the 5th day in time window, unit be DEG C, TB1For first day in first time window
The temperature value of second thermocouple measurement, unit are DEG C.For example, the available 1st, 2,3,4,5,6,7 ..., n days the second thermoelectricity
The temperature value occasionally measured, is denoted as T respectivelyB1、TB2、TB3、TB4、TB5、TB6、TB7、……、TBn, when the length of first time window is set
When being set to 5 days, the oxidation rate for calculating the second thermocouple can be since the 5th day, then second temperature corresponding to the 5th day becomes
Change amount is △ TB=TB5-TB1, second temperature variable quantity corresponding to the 6th day is △ TB=TB6-TB2, corresponding to the 7th day
Two temperature variations are △ TB=TB7-TB3, and so on, second temperature variable quantity corresponding to n-th day is △ TB=TBn-
TBn-4。
Optionally, it according to the length and power variation of the second time window, determines the oxidation rate of third thermocouple, wraps
It includes:
According to the length and power variation of the second time window, the oxygen of third thermocouple is determined by third calculation formula
Change rate.
Third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of third thermocouple, △ P is power variation, and m is the length of the second time window, λ
For preset second coefficient of relationship.
For example, the length of the second time window is set as 5 days (i.e. m=5), the available 1st, 2,3,4,5,6,
7 ..., the power of m days second channels, is denoted as P respectively1、P2、P3、P4、P5、P6、P7、……、Pm, calculate the oxygen of third thermocouple
Changing rate can be since the 5th day, then power variation corresponding to the 5th day is △ P=P5-P1, function corresponding to the 6th day
Rate variable quantity is △ P=P6-P2, power variation corresponding to the 7th day is △ P=P7-P3, and so on, corresponding to the m days
Power variation be △ P=Pm-Pm-4.Wherein, the second coefficient of relationship is able to reflect the temperature variation in second channel and
The relationship of power variation in two channels, the second coefficient of relationship can be rule of thumb manually set by staff, can also be with
It is arranged according to a large amount of empirical data, and adjustment in real time in process of production, it can also be by counting in kiln stability of flow
After work a period of time (such as can be one week), by the temperature value that artificially heats up or cool down, (artificially adjusting the duration is wanted
Suitably, guarantee that the amount of oxidation of the third thermocouple within the adjustment duration can be ignored, such as artificial adjustment time can be 10
A hour) and power variation between relationship obtain.Such as λ=△ P*/△T*, wherein △ P*For kiln stability of flow work
After making a period of time, in 10 hours in second channel power variable quantity, unit kW, △ T*Artificially to be adjusted in 10 hours
Whole temperature value, unit are DEG C.
When second channel includes three subchannels, the temperature variation and power variation of three subchannels are respectively obtained
Three the second coefficient of relationship, third calculation formula σ is passed through according to the power variation of each subchannel and the second coefficient of relationship2
=△ P/ (m* λ) calculates separately the third thermocouple oxidation rate of each subchannel, and △ P is power variation, unit kW, m
For the length of the second time window, unit is day, and λ is preset second coefficient of relationship, and unit is kW/ DEG C.For example, the first son is logical
The oxidation rate σ in roada=△ Pa/(maλa), the oxidation rate σ of the second subchannelb=△ Pb/(mbλb), the oxidation of third subchannel
Rate σc=△ Pc/(mcλc), wherein σa、σb、σcRespectively indicate the oxidation of the first subchannel, the second subchannel, third subchannel
Rate.△Pa、△Pb、△PcRespectively indicate the first subchannel in the second time window, the second subchannel, third subchannel
Power variation.
It should be noted that in second channel channel wall thickness variation, also will affect the size of λ.For example, for different thickness
Three subchannels of degree, the range of λ is also different, in the production line that platinum tube wall does not thicken, the λ value range of the first subchannel
For 0.29-0.35, the λ value range of the second subchannel is 0.35-0.4, and the λ value range of third subchannel is 0.42-0.55, in platinum
In the production line that golden tube wall thickeies, the λ value range of the first subchannel is 0.32-0.4, and the λ value range of the second subchannel is 0.42-
0.55, the λ value range of third subchannel is 0.5-0.66.
In conclusion the acquisition methods of thermocouple oxidation rate provided by the disclosure, by the way that glass furnace is arranged in
The second thermocouple in first passage obtains the second temperature variable quantity of the second thermocouple measurement in preset first time window,
To which according to the length of first time window, impact factor and second temperature variable quantity, the oxidation to determine the second thermocouple is fast
Rate, then the power variation in the second time window in second channel is obtained by the second channel of glass furnace, thus according to
Power variation in the length and second channel of second time window of glass furnace is arranged in the of glass furnace to determine
The oxidation rate of third thermocouple in two channels.The disclosure being capable of each thermocouple in the channel of real-time monitoring glass furnace
Oxidation rate, to adjust the heating circuit in channel according to the oxidation rate of thermocouple in process of production.
Fig. 6 is a kind of block diagram of the acquisition device of thermocouple oxidation rate shown according to an exemplary embodiment.Such as Fig. 6
Shown, which includes:
First obtains module 301, for obtaining the second temperature of the second thermocouple measurement in preset first time window
Variable quantity.
First determining module 302, for according to the length of first time window, impact factor and second temperature variable quantity,
Determine the oxidation rate of the second thermocouple, impact factor is when the glass metal in tank furnace flows into first passage to the second thermocouple
It influences.
Second obtains module 303, for obtaining the power variation in preset second time window in second channel.
Second determining module 304 determines third thermocouple for the length and power variation according to the second time window
Oxidation rate.
Optionally, when second channel includes multiple subchannels, when being both provided with a third thermocouple in each subchannel,
Second acquisition module 303 is used for:
Obtain multiple power variations in the second time window in multiple subchannels.
Second determining module 304 is used for:
According to the second time window and multiple power variations, the oxidation of the third thermocouple in each subchannel is determined
Rate.
Fig. 7 is the block diagram of the acquisition device of another thermocouple oxidation rate shown according to an exemplary embodiment.Such as
Shown in Fig. 7, before device 302, the device 300 further include:
Influence determining module 305, first pressure, preset normal pressure and first for obtaining according to manometric module
First temperature of thermocouple measurement, determines impact factor.
Optionally, determining module 305 is influenced to be used for:
According to manometric module obtain first pressure, preset normal pressure and the first temperature of the first thermocouple measurement,
Impact factor is determined using the first calculation formula.
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor impact factor, TAFor the first temperature, POFor normal pressure, PXFor first pressure, K is preset the
One coefficient of relationship, E are preset constant.
Optionally, the first determining module 302 is used for:
According to the length of first time window, impact factor and second temperature variable quantity, determined using the second calculation formula
The oxidation rate of second thermocouple.
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of the second thermocouple, △ TAFor impact factor, △ TBFor second temperature variable quantity, n is
The length of first time window.
Optionally, the second determining module 304 is used for:
According to the length and power variation of the second time window, the oxygen of third thermocouple is determined by third calculation formula
Change rate.
Third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of third thermocouple, △ P is power variation, and m is the length of the second time window, λ
For preset second coefficient of relationship.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
In conclusion a kind of acquisition device of thermocouple oxidation rate provided by the disclosure, by being arranged in glass furnace
The second temperature that the second thermocouple in the first passage of furnace obtains the second thermocouple measurement in preset first time window becomes
Change amount, thus according to the length of first time window, impact factor and second temperature variable quantity, to determine the oxygen of the second thermocouple
Change rate, then the power variation in the second time window in second channel is obtained by the second channel of glass furnace, thus
It is determined and is arranged in glass furnace according to the power variation in the length and second channel of the second time window of glass furnace
Second channel in third thermocouple oxidation rate.The disclosure being capable of each thermoelectricity in the channel of real-time monitoring glass furnace
Even oxidation rate, to adjust the heating circuit in channel according to the oxidation rate of thermocouple in process of production.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, the disclosure to various combinations of possible ways no longer separately
Explanation.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (16)
1. a kind of glass furnace, which is characterized in that the glass furnace includes: tank furnace, first passage and second channel；
The entrance of the tank furnace is the feed opening of the glass furnace, and the outlet of the tank furnace connects with the entrance of the first passage
It connects, the outlet of the first passage is connect with the entrance of the second channel, and the outlet of the second channel is the glass furnace
The discharge port of furnace；
In the tank furnace, the distance outlet horizontal range with the tank furnace is to be provided with the first thermocouple and survey at the first pre-determined distance
Die block, first thermocouple is used to measure the temperature when glass metal in the tank furnace flows into the first passage, described
Manometric module is used to measure the pressure of the outlet of the tank furnace；
It is provided with the second thermocouple in the first passage, third thermocouple, second heat are provided in the second channel
Galvanic couple is used to measure the temperature of the glass metal in the first passage, and the third thermocouple is for measuring in the second channel
Glass metal temperature.
2. glass furnace according to claim 1, which is characterized in that first thermocouple hangs down with the manometric module
Straight distance is less than or equal to the second pre-determined distance.
3. glass furnace according to claim 1, which is characterized in that the second channel includes multiple subchannels, each
The third thermocouple is both provided in the subchannel, each third thermocouple is logical for measuring each son
The temperature of glass metal in road.
4. glass furnace according to claim 1 to 3, which is characterized in that the first passage and described second leads to
Road is platinum channel, and first thermocouple, second thermocouple and the third thermocouple are platinum-rhodium alloy thermoelectricity
It is even.
5. a kind of acquisition methods of thermocouple oxidation rate, which is characterized in that applied to the glass any in claim 1-4
Glass kiln, which comprises
Obtain the second temperature variable quantity of second thermocouple measurement in preset first time window；
According to the length of the first time window, impact factor and the second temperature variable quantity, second thermoelectricity is determined
Even oxidation rate, the impact factor are when the glass metal in the tank furnace flows into the first passage to second thermoelectricity
Even influence；
Obtain the power variation in preset second time window in the second channel；
According to the length of second time window and the power variation, the oxidation rate of the third thermocouple is determined.
6. according to the method described in claim 5, it is characterized in that, when the second channel includes multiple subchannels, Mei Gesuo
It states when being both provided with a third thermocouple in subchannel, described to obtain in preset second time window described second logical
Power variation in road, comprising:
Obtain multiple power variations in second time window in the multiple subchannel；
The length according to second time window and the power variation determine the oxidation speed of the third thermocouple
Rate, comprising:
According to second time window and the multiple power variation, the third in each subchannel is determined
The oxidation rate of thermocouple.
7. according to the method described in claim 5, it is characterized in that, in the length according to the first time window, shadow
Ring the factor and the second temperature variable quantity, before the oxidation rate for determining second thermocouple, the method also includes:
The first of the first pressure, preset normal pressure and first thermocouple measurement that are obtained according to the manometric module
Temperature determines the impact factor.
8. the method according to the description of claim 7 is characterized in that it is described according to the manometric module obtain first pressure,
First temperature of preset normal pressure and first thermocouple measurement, determines the impact factor, comprising:
The first of the first pressure, preset normal pressure and first thermocouple measurement that are obtained according to the manometric module
Temperature determines the impact factor using the first calculation formula；
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor the impact factor, TAFor first temperature, POFor the normal pressure, PXFor the first pressure,
K is preset first coefficient of relationship, and E is preset constant.
9. according to the method described in claim 5, it is characterized in that, the length according to the first time window, influence
The factor and the second temperature variable quantity, determine the oxidation rate of second thermocouple, comprising:
According to the length of the first time window, impact factor and the second temperature variable quantity, the second calculation formula is utilized
Determine the oxidation rate of second thermocouple；
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of second thermocouple, △ TAFor the impact factor, △ TBFor second temperature change
Change amount, n are the length of the first time window.
10. method according to claim 5 or 6, which is characterized in that the length according to second time window and
The power variation determines the oxidation rate of the third thermocouple, comprising:
According to the length of second time window and the power variation, the third heat is determined by third calculation formula
The oxidation rate of galvanic couple；
The third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of the third thermocouple, △ P is the power variation, and m is second time window
Length, λ be preset second coefficient of relationship.
11. a kind of acquisition device of thermocouple oxidation rate, which is characterized in that applied to any described in claim 1-4
Glass furnace, described device include:
First obtains module, and the second temperature for obtaining second thermocouple measurement in preset first time window changes
Amount；
First determining module, for according to the length of the first time window, impact factor and the second temperature variable quantity,
Determine the oxidation rate of second thermocouple, the impact factor is that the glass metal in the tank furnace flows into the first passage
When influence to second thermocouple；
Second obtains module, for obtaining the power variation in preset second time window in the second channel；
Second determining module, for according to second time window length and the power variation, determine the third
The oxidation rate of thermocouple.
12. device according to claim 11, which is characterized in that when the second channel includes multiple subchannels, each
When being both provided with a third thermocouple in the subchannel, the second acquisition module is used for:
Obtain multiple power variations in second time window in the multiple subchannel；
Second determining module is used for:
According to second time window and the multiple power variation, the third in each subchannel is determined
The oxidation rate of thermocouple.
13. device according to claim 11, which is characterized in that before first determining module, described device is also
Include:
Influence determining module, first pressure, preset normal pressure and described first for obtaining according to the manometric module
First temperature of thermocouple measurement, determines the impact factor.
14. device according to claim 13, which is characterized in that the influence determining module is used for:
The first of the first pressure, preset normal pressure and first thermocouple measurement that are obtained according to the manometric module
Temperature determines the impact factor using the first calculation formula；
First calculation formula includes:
△TA=TA–[E+K×(PX-PO)]
Wherein, △ TAFor the impact factor, TAFor first temperature, POFor the normal pressure, PXFor the first pressure,
K is preset first coefficient of relationship, and E is preset constant.
15. device according to claim 11, which is characterized in that first determining module is used for:
According to the length of the first time window, impact factor and the second temperature variable quantity, the second calculation formula is utilized
Determine the oxidation rate of second thermocouple；
Second calculation formula includes:
σ1=(△ TB-△TA)/n
Wherein, σ1For the oxidation rate of second thermocouple, △ TAFor the impact factor, △ TBFor second temperature change
Change amount, n are the length of the first time window.
16. device according to claim 11 or 12, which is characterized in that second determining module is used for:
According to the length of second time window and the power variation, the third heat is determined by third calculation formula
The oxidation rate of galvanic couple；
The third calculation formula includes:
σ2=△ P/ (m* λ)
Wherein, σ2For the oxidation rate of the third thermocouple, △ P is the power variation, and m is second time window
Length, λ be preset second coefficient of relationship.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112947338A (en) * | 2021-02-10 | 2021-06-11 | 芜湖东旭光电科技有限公司 | Molten glass channel process control method and system |
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| DE102012217742A1 (en) * | 2012-09-28 | 2014-04-03 | Siemens Aktiengesellschaft | Temperature sensor for gas turbine, has a thermocouple having two electrically conductive half-elements formed by thermal spraying of ceramic, while differing in Seebeck coefficient and connected to each other at a contact point |
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