Glass kiln tank bottom temperature control method and system and glass kiln

Abstract

The invention discloses a glass kiln bottom temperature control method and system and a glass kiln, and belongs to the technical field of glass kilnes.Temperature information of each detection point is obtained from a plurality of detection points between the bottom of a melting pool and a working pool, and deviation and trend related to the temperature of the detection point are calculated according to the temperature information; the deviation of all the detection points is subjected to weight calculation to obtain the comprehensive deviation of the temperature, the trend of all the detection points is subjected to weight calculation to obtain the comprehensive trend of the temperature, the arch top temperature adjustment amount is obtained through the comprehensive deviation and the comprehensive trend calculation, and control linkage of the pool bottom temperature and the arch top temperature is achieved. After the target temperatures of a plurality of detection points are manually set, the pool bottom temperature and the arch top temperature control are automatically adjusted and fed back, so that the dependence of pool bottom temperature adjustment on manual trend judgment is reduced, the pool bottom temperature is automatically controlled, the stability of the pool bottom temperature is improved, and the fluctuation range of the glass liquid temperature is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass kiln, in particular to a glass kiln pool bottom temperature control method, a control system and a glass kiln. BACKGROUND

[0002] The glass kiln can heat and melt glass raw materials into glass liquid for producing different glass products in subsequent processes. The glass liquid in the melting pool of the glass kiln is mainly melted by the heat generated by flame combustion. The flame burns in the upper space of the glass liquid, and the dome top thermocouple can detect the temperature of this position in real time. The appropriate amount of fuel gas can be provided to the kiln according to the dome top temperature to reach the target temperature. At present, a pool bottom thermocouple is installed at the bottom of the melting pool to indirectly measure the temperature of the glass liquid by measuring the pool bottom temperature, and then the amount of fuel gas is further adjusted according to the pool bottom temperature to accurately control the temperature of the glass liquid. However, the pool bottom thermocouple is installed at the bottom of the melting pool and does not directly contact the glass liquid. The pool bottom thermocouple indirectly detects the temperature of the glass liquid at the bottom of the kiln. Due to the influence of the viscosity and fluidity of the glass liquid, the adjustment of the dome top temperature according to the pool bottom temperature has a large hysteresis, and manual judgment of the trend of the pool bottom temperature is required, which leads to large fluctuations in the temperature of the glass liquid. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a glass kiln pool bottom temperature control method, which realizes the linkage control of the pool bottom temperature and the dome top temperature. After manually setting the target temperature of multiple detection points, the pool bottom temperature and the dome top temperature control are automatically adjusted and fed back, reducing the dependence of the pool bottom temperature adjustment on manual trend judgment, realizing the automatic control of the pool bottom temperature, and improving the stability of the pool bottom temperature, thereby reducing the fluctuation range of the temperature of the glass liquid.

[0004] According to the glass kiln pool bottom temperature control method of the first aspect of the present application, the glass kiln comprises a melting pool, a liquid flow hole and a working pool which are sequentially connected, and the control method comprises: A plurality of detection points are set between the pool bottom of the melting pool and the working pool, and the target temperature, the current temperature and the average temperature of each detection point are obtained; The deviation and the trend are calculated according to the target temperature, the current temperature and the average temperature; The comprehensive deviation is calculated according to a plurality of deviations, and the comprehensive trend is calculated according to a plurality of trends; The dome top temperature adjustment amount is calculated according to the comprehensive deviation and the comprehensive trend, and the dome top temperature set value of the glass kiln is adjusted according to the dome top temperature adjustment amount.

[0005] The glass furnace pool bottom temperature control method according to the embodiment of the present application has at least the following beneficial effects: temperature information of each detection point is obtained from a plurality of detection points between the pool bottom of the melting pool and the working pool, the temperature information including the current temperature measured by the detection point, the average temperature measured by the detection point in a preset time period, and the target temperature set for the detection point, the deviation and trend related to the temperature of the detection point are calculated according to the temperature information, the comprehensive deviation of the temperature is obtained by weight calculation of the deviations of all the detection points, the comprehensive trend of the temperature is obtained by weight calculation of the trends of all the detection points, the adjustment amount of the crown temperature is calculated through the comprehensive deviation and the comprehensive trend, and the set value of the crown temperature of the glass furnace is adjusted through the adjustment amount of the crown temperature, thereby realizing the linkage control of the pool bottom temperature and the crown temperature, and reducing the dependence of the pool bottom temperature adjustment on the artificial trend judgment, realizing the automatic control of the pool bottom temperature, improving the stability of the pool bottom temperature, and further reducing the fluctuation range of the glass liquid temperature.

[0006] According to some embodiments of the present application, the deviation and the trend are calculated according to the target temperature, the current temperature and the average temperature, including: a deviation amplification coefficient and a trend amplification coefficient are given to each detection point; the deviation is calculated according to the following formula: P=(Ta-Te)xFp; wherein P is the deviation, Ta is the average temperature, Te is the target temperature, and Fp is the deviation amplification coefficient; the trend is calculated according to the following formula: Q=(Tc-Ta)xFq; wherein Q is the trend, Tc is the current temperature, Ta is the average temperature, and Fq is the trend amplification coefficient.

[0007] According to some embodiments of the present application, the comprehensive deviation is calculated by weight calculation of a plurality of deviations, including: the comprehensive deviation is calculated according to the following formula: Tp=Tp1xKp1+Tp2xKp2+Tp3xKp3+…+TpnxKpn; wherein Tp is the comprehensive deviation, Tp1 is the first deviation, Kp1 is the first deviation weight, Tp2 is the second deviation, Kp2 is the second deviation weight, Tp3 is the third deviation, Kp3 is the third deviation weight, …, Tpn is the nth deviation, and Kpn is the nth deviation weight.

[0008] According to some embodiments of the present application, the weight calculation according to the plurality of trends to obtain a comprehensive trend comprises: The comprehensive trend is calculated according to the following formula: Tq=Tq1×Kq1+Tq2×Kq2+Tq3×Kq3+……+Tqn×Kqn; Wherein, Tq is the comprehensive trend, Tq1 is the first trend, Kq1 is the first trend weight, Tq2 is the second trend, Kq2 is the second trend weight, Tq3 is the third trend, Kq3 is the third trend weight, …, Tqn is the nth trend, and Kqn is the nth trend weight.

[0009] According to some embodiments of the present application, the plurality of detection points are arranged between the bottom of the melting pool and the working pool, comprising: The first detection point is arranged in front of the bottom of the melting pool, the second detection point is arranged in the middle of the bottom of the melting pool, and the third detection point is arranged between the flow liquid hole and the working pool. The target temperature, the current temperature and the average temperature of each detection point are obtained, comprising: The first target temperature, the first current temperature and the first average temperature of the first detection point are obtained. The second target temperature, the second current temperature and the second average temperature of the second detection point are obtained. The third target temperature, the third current temperature and the third average temperature of the third detection point are obtained.

[0010] According to some embodiments of the present application, the crown temperature setting value of the glass furnace is adjusted according to the crown temperature adjustment amount, comprising: It is judged whether the crown temperature adjustment amount is greater than a threshold value. When the crown temperature adjustment amount is greater than the threshold value, the fuzzy processing result is obtained by fuzzy processing the comprehensive deviation and the comprehensive trend, and a correction coefficient is set. The product of the fuzzy processing result and the correction coefficient is calculated to obtain a first lower limit value, and it is judged whether the crown temperature adjustment amount is less than the first lower limit value. When the crown temperature adjustment amount is less than the first lower limit value, the numerical value of the crown temperature adjustment amount is adjusted to the numerical value of the first lower limit value.

[0011] According to some embodiments of the present application, the crown temperature setting value of the glass furnace is adjusted according to the crown temperature adjustment amount, further comprising: A second lower limit value is set, and it is judged whether the first lower limit value is less than the second lower limit value. When the first lower limit value is less than the second lower limit value, it is determined whether the crown temperature adjustment amount is less than the second lower limit value. When the crown temperature adjustment amount is less than the second lower limit value, the value of the crown temperature adjustment amount is adjusted to the value of the second lower limit value.

[0012] According to some embodiments of the present application, the adjusting the crown temperature set value of the glass furnace according to the crown temperature adjustment amount further comprises: A upper limit value is set, and it is determined whether the crown temperature adjustment amount is greater than the upper limit value. When the crown temperature adjustment amount is greater than the upper limit value, the value of the crown temperature adjustment amount is adjusted to the value of the upper limit value.

[0013] The glass furnace pool bottom temperature control system according to the second aspect of the embodiments of the present application comprises a memory and a processor, the memory stores a computer program, and the processor realizes the glass furnace pool bottom temperature control method according to the above-mentioned embodiments when executing the computer program.

[0014] The glass furnace pool bottom temperature control system according to the embodiments of the present application has at least the following beneficial effects: among a plurality of detection points between the pool bottom of the melting pool and the working pool, the temperature information of each detection point is obtained, the temperature information includes the current temperature measured by the detection point, the average temperature measured by the detection point in a preset time period, and the target temperature set for the detection point, the deviation and the trend related to the temperature of the detection point are calculated according to the temperature information, the comprehensive deviation of the temperature is obtained by weight calculation of the deviations of all detection points, the comprehensive trend of the temperature is obtained by weight calculation of the trends of all detection points, the crown temperature adjustment amount is calculated through the comprehensive deviation and the comprehensive trend, the crown temperature set value of the glass furnace is adjusted through the crown temperature adjustment amount, the control linkage of the pool bottom temperature and the crown temperature is realized, after the target temperatures of the plurality of detection points are artificially set, the pool bottom temperature and the crown temperature control are automatically adjusted and fed back, the dependence of the pool bottom temperature adjustment on the artificial trend judgment is reduced, the automatic control of the pool bottom temperature is realized, and the stability of the pool bottom temperature is improved, thereby reducing the fluctuation range of the glass liquid temperature.

[0015] The glass furnace according to the third aspect of the embodiments of the present application comprises the glass furnace pool bottom temperature control system according to the second aspect of the above-mentioned embodiments.

[0016] Since the glass furnace adopts all the technical solutions of the glass furnace pool bottom temperature control system according to the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0017] Other features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a flow chart of a glass furnace tank bottom temperature control method according to an embodiment of the present application; Figure 2 is a flow chart of obtaining temperature information of multiple detection points according to an embodiment of the present application; Figure 3 is a flow chart of obtaining deviation and trend of detection points according to an embodiment of the present application; Figure 4 is a flow chart of obtaining comprehensive deviation and comprehensive trend according to an embodiment of the present application; Figure 5 is a flow chart of comparing the adjusting amount of the dome top temperature with the first lower limit value according to an embodiment of the present application; Figure 6 is a flow chart of comparing the adjusting amount of the dome top temperature with the second lower limit value according to an embodiment of the present application; Figure 7 is a flow chart of comparing the adjusting amount of the dome top temperature with the upper limit value according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which like reference numerals indicate like elements or elements having the same or similar function throughout the several views. The embodiments described below are examples of the present application, and are not intended to limit the present application.

[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms front, back, top, bottom, axial, circumferential, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the first, second, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0022] In the description of the present application, the words such as setting, installing, connecting and the like should be understood in a broad sense, and the specific meanings of the above words in the present application can be determined by the skilled in the art in combination with the specific content of the technical solutions.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing the embodiments of the present application only and is not intended to be limiting of the present application.

[0024] The technical solutions of the present application will be described clearly and completely in combination with the accompanying drawings. Obviously, the following described embodiments are part of the embodiments of the present application, not all the embodiments.

[0025] Referring to Figures 1 to 7 As shown in the figure, the present application provides a glass furnace pool bottom temperature control method. The glass furnace pool bottom temperature control method is applied to a glass furnace.

[0026] The melting pool of the glass furnace is a tank-shaped container built with refractory materials, used to contain glass liquid and complete the melting process. The flow liquid hole of the glass furnace serves as the hub of the glass furnace, carrying the key processes of glass liquid from melting, refining to homogenization. The flow liquid hole is a culvert located at the bottom of the pool furnace that connects the glass liquid of the melting pool and the cooling pool, and is built with a set of specially designed high-quality refractory materials. The working pool of the glass furnace serves to further homogenize and cool the glass liquid. Therefore, after the glass raw materials are heated and melted in the melting pool, they flow to the working pool through the flow liquid hole.

[0027] The crown of the glass furnace refers to the upper arched structure of the flame space of the furnace, and the crown is located at the top of the glass melting furnace, generally at the top of the melting pool, and serves to close the flame space and reflect the energy of the flame radiation to the batch material and the glass liquid for radiation heat transfer.

[0028] Referring to Figure 1 As shown in the figure, the glass furnace pool bottom temperature control method comprises the following steps.

[0029] Step S100, a plurality of detection points are set between the pool bottom of the melting pool, the flow liquid hole and the working pool, the target temperature of each detection point is set, the current temperature and the draw temperature of each detection point are obtained.

[0030] Because the glass liquid in the melting pool continuously flows to the working pool through the liquid flow hole, the glass liquid is in a flowing state, and therefore the temperatures of the glass liquid at different positions are different. Because the melting pool is a place where the glass raw material is heated and melted, the temperature of the glass liquid in the melting pool is higher than that of the glass liquid in the liquid flow hole. The working pool is a place where the glass liquid is further homogenized and cooled, and therefore the temperature of the glass liquid in the working pool is lower than that of the glass liquid in the liquid flow hole. Therefore, there are differences in temperature between the bottom of the melting pool, the liquid flow hole, and the working pool.

[0031] A plurality of detection points are arranged to measure the temperatures at different positions of the bottom of the melting pool and the temperature of the rising path between the liquid flow hole and the working pool, so as to monitor the temperature condition of the glass liquid in real time. The more the number of detection points, the more accurate the deviation between the temperature of the glass liquid at different positions and the theoretical temperature can be displayed, and the more accurate the temperature change trend of the glass liquid at different positions can be displayed.

[0032] For each detection point, a target temperature is generally set for the detection point, and the temperature of the detection point is changed to reach the target temperature by changing the combustion condition of the gas above the melting pool. A thermocouple is arranged at each detection point, and the thermocouple is used to measure the current temperature of the corresponding detection point in real time and record the temperature change data measured by the thermocouple within a preset time. The average temperature is calculated by the temperature change data. In this embodiment, the preset time is one hour or two hours.

[0033] In step S200, the deviation is calculated according to the target temperature and the average temperature, and the trend is calculated according to the current temperature and the temperature within the preset time.

[0034] For each detection point, the target temperature of the detection point represents the temperature expectation of the position, that is, the temperature of the detection point is changed to reach the target temperature by changing the combustion condition of the gas above the melting pool, and the target temperature is the most ideal expected temperature of the position corresponding to the detection point. However, in actual situation, the current temperature of the position corresponding to the detection point generally fluctuates within a temperature range with the target temperature as the middle value. The smaller the difference between the average temperature and the target temperature, the smaller the temperature deviation within the preset time. When the difference between the current temperature and the average temperature is positive, it proves that the temperature change trend corresponding to the detection point is temperature rise. When the difference between the current temperature and the average temperature is negative, it proves that the temperature change trend corresponding to the detection point is temperature drop.

[0035] Therefore, by calculating the target temperature, the current temperature, and the average temperature of each detection point, the deviation and the trend of the temperature corresponding to the detection point can be obtained.

[0036] In step S300, the comprehensive deviation is calculated by weighting all the deviations, and the comprehensive trend is calculated by weighting all the trends.

[0037] The deviation weight corresponding to the deviation of each detection point is given, and the weight calculation of the multiple deviations can obtain the comprehensive deviation of the glass liquid temperature; the trend weight corresponding to the trend of each detection point is given, and the weight calculation of the multiple trends can obtain the comprehensive trend of the glass liquid temperature.

[0038] It can be understood that the detection points at different positions between the bottom of the melting tank and the working tank have different influences on the glass liquid temperature in the glass kiln, so it is necessary to give the multiple detection points corresponding deviation weights and trend weights according to the situation of each glass kiln, and the deviation weight and the trend weight of the detection point having greater influence on the glass liquid temperature are greater, and then the weight calculation is performed to obtain the comprehensive deviation and the comprehensive trend, which can ensure that the calculated comprehensive deviation and comprehensive trend are more accurate, and help to accurately predict the deviation of the glass liquid temperature from the theoretical temperature and the change trend of the glass liquid temperature.

[0039] In step S400, the adjustment amount of the crown temperature is calculated by the product of the comprehensive deviation and the comprehensive trend, and the crown temperature set value is adjusted according to the adjustment amount of the crown temperature.

[0040] Finally, the adjustment amount of the crown temperature is calculated through the comprehensive deviation and the comprehensive trend of the glass liquid temperature, and then the crown temperature set value is automatically adjusted. It can be understood that after the crown temperature set value changes, the gas supply amount and the combustion air supply amount in the glass kiln will also change. In the embodiment, the crown temperature set value is increased, the gas supply amount and the combustion air supply amount in the glass kiln are increased, the heat generated by the combustion of the gas is increased, and then the temperature of the glass kiln is increased; the crown temperature set value is decreased, the gas supply amount and the combustion air supply amount in the glass kiln are decreased, the heat generated by the combustion of the gas is decreased, and then the temperature of the glass kiln is decreased.

[0041] The crown temperature set value is adjusted by the adjustment amount of the crown temperature, realizing the linkage control of the tank bottom temperature and the crown temperature. After the target temperature of the multiple detection points is set by the artificial, the tank bottom temperature and the crown temperature control are automatically adjusted and fed back, reducing the dependence of the tank bottom temperature adjustment on the artificial trend judgment, realizing the automatic control of the tank bottom temperature, and improving the stability of the tank bottom temperature, and then reducing the fluctuation range of the glass liquid temperature.

[0042] Referring to Figure 2 As shown in FIG. 1, step S100 includes the following steps.

[0043] In step S110, a first detection point is set for the front section of the tank bottom of the melting tank, a second detection point is set for the middle section of the tank bottom of the melting tank, and a third detection point is set between the flow liquid hole and the working tank.

[0044] Since the starting position of the glass liquid melting in the melting tank is in the front section, the temperature of the front section of the tank bottom of the melting tank has a greater influence on the subsequent glass liquid temperature, and therefore the first detection point is set at this position; the glass liquid starts to gradually become uniform in the middle section of the melting tank, and the glass liquid temperature of the middle section of the tank bottom of the melting tank tends to be stable, and therefore the second detection point is set at this position; the region between the flow liquid hole and the working tank is the ascending channel, and the glass liquid temperature of the ascending channel is in a descending state, and therefore the third detection point is set at this position.

[0045] Therefore, the first detection point, the second detection point and the third detection point correspond to the processes of glass liquid melting, stabilization and cooling respectively, and the three detection points can monitor the whole process of the glass liquid temperature change.

[0046] In step S120, the first target temperature, the first current temperature and the first average temperature of the first detection point are obtained.

[0047] The first target temperature is set for the temperature of the front section of the tank bottom of the melting tank, the first thermocouple is arranged at the front section of the tank bottom to measure the first current temperature, and the first average temperature is calculated after recording the temperature change data of the front section of the tank bottom. This is helpful for subsequently calculating the first deviation and the first trend corresponding to the front section of the tank bottom.

[0048] In step S130, the second target temperature, the second current temperature and the second average temperature of the second detection point are obtained.

[0049] The second target temperature is set for the temperature of the middle section of the tank bottom of the melting tank, the second thermocouple is arranged at the middle section of the tank bottom to measure the second current temperature, and the second average temperature is calculated after recording the temperature change data of the middle section of the tank bottom. This is helpful for subsequently calculating the second deviation and the second trend corresponding to the middle section of the tank bottom.

[0050] In step S140, the third target temperature, the third current temperature and the third average temperature of the third detection point are obtained.

[0051] The third target temperature is set for the temperature of the ascending channel between the flow liquid hole and the working tank, the third thermocouple is arranged at the ascending channel to measure the third current temperature, and the third average temperature is calculated after recording the temperature change data of the ascending channel. This is helpful for subsequently calculating the third deviation and the third trend corresponding to the ascending channel.

[0052] In the embodiment, the comprehensive deviation is calculated according to the first deviation, the second deviation and the third deviation, the comprehensive trend is calculated according to the first trend, the second trend and the third trend, and the adjusting amount of the tank top temperature is calculated through the comprehensive deviation and the comprehensive trend.

[0053] Referring to FIG. 2, Figure 3 As shown in FIG. 2, step S200 includes the following steps.

[0054] In step S210, a deviation amplification coefficient and a trend amplification coefficient are assigned to each detection point.

[0055] It can be understood that, due to the different degrees of influence of the detection points at different positions on the glass liquid temperature, the temperature measured by the detection points at some positions will have a greater influence on the entire glass liquid temperature even if there is a slight change, and therefore the influence of each detection point on the glass liquid temperature needs to be evaluated and a corresponding deviation amplification coefficient and trend amplification coefficient is given.

[0056] In the embodiment, the deviation amplification coefficient and the trend amplification coefficient are manually set.

[0057] In step S220, the deviation is calculated according to the following formula: P= (Ta-Te) x Fp; Wherein, P is the deviation, Ta is the average temperature, Te is the target temperature, and Fp is the deviation amplification coefficient.

[0058] The average temperature is calculated using the temperature change data measured within the preset time, the difference between the average temperature and the target temperature corresponding to the detection point is calculated, and the product of the difference and the deviation amplification coefficient is calculated to obtain the deviation of the detection point. In the embodiment, the value range of the deviation amplification coefficient is 0-2.

[0059] For example, the first detection point is set at the front section of the pool bottom of the melting pool, the second detection point is set at the middle section of the pool bottom of the melting pool, and the third detection point is set at the ascending path between the flow hole and the working pool. The first deviation amplification coefficient set for the first detection point is 1.5, the second deviation amplification coefficient set for the second detection point is 0.2, and the third deviation amplification coefficient set for the third detection point is 1.

[0060] In step S230, the trend is calculated according to the following formula: Q= (Tc-Ta) x Fq; Wherein, Q is the trend, Tc is the current temperature, Ta is the average temperature, and Fq is the trend amplification coefficient.

[0061] The average temperature is calculated using the temperature change data measured within the preset time, the difference between the average temperature and the target temperature corresponding to the detection point is calculated, and the product of the difference and the deviation amplification coefficient is calculated to obtain the deviation of the detection point. In the embodiment, the value range of the deviation amplification coefficient is 0-2.

[0062] For example, the first detection point is set at the front section of the pool bottom of the melting pool, the second detection point is set at the middle section of the pool bottom of the melting pool, and the third detection point is set at the ascending path between the flow hole and the working pool. The first deviation amplification coefficient set for the first detection point is 1.5, the second deviation amplification coefficient set for the second detection point is 0.2, and the third deviation amplification coefficient set for the third detection point is 1.

[0063] Referring to Figure 4 As shown in FIG. 3, step S300 includes the following steps.

[0064] Step S310, the comprehensive deviation is calculated according to the following formula: Tp=Tp1×Kp1+Tp2×Kp2+Tp3×Kp3+……+Tpn×Kpn; Wherein, Tp is the comprehensive deviation, Tp1 is the first deviation, Kp1 is the first deviation weight, Tp2 is the second deviation, Kp2 is the second deviation weight, Tp3 is the third deviation, Kp3 is the third deviation weight, …, Tpn is the n deviation, Kpn is the n deviation weight.

[0065] It can be understood that the detection points can be assigned with corresponding weights according to the degree of influence on the glass liquid temperature, for example, the greater the degree of influence, the greater the deviation weight corresponding to the detection point. Therefore, the comprehensive deviation calculated according to the above formula more accurately shows the difference between the existing glass liquid temperature and the theoretical temperature.

[0066] For example, in the present embodiment, the first detection point is set at the front section of the pool bottom of the melting pool, the second detection point is set at the middle section of the pool bottom of the melting pool, and the third detection point is set at the riser between the flow hole and the working pool, then the comprehensive deviation Tp=Tp1×Kp1+Tp2×Kp2+Tp3×Kp3, wherein Tp is the comprehensive deviation, Tp1 is the first deviation, Kp1 is the first deviation weight, Tp2 is the second deviation, Kp2 is the second deviation weight, Tp3 is the third deviation, Kp3 is the third deviation weight.

[0067] Referring to Figure 4 As shown in FIG. 3, step S300 includes the following steps.

[0068] Step S320, the comprehensive trend is calculated according to the following formula: Tq=Tq1×Kq1+Tq2×Kq2+Tq3×Kq3+……+Tqn×Kqn; Wherein, Tq is the comprehensive trend, Tq1 is the first trend, Kq1 is the first trend weight, Tq2 is the second trend, Kq2 is the second trend weight, Tq3 is the third trend, Kq3 is the third trend weight, …, Tqn is the n trend, Kqn is the n trend weight.

[0069] It can be understood that the detection points can be assigned with corresponding weights according to the degree of influence on the glass liquid temperature, for example, the greater the degree of influence, the greater the deviation weight corresponding to the detection point. Therefore, the comprehensive deviation calculated according to the above formula more accurately shows the difference between the existing glass liquid temperature and the theoretical temperature.

[0070] For example, in this embodiment, a first detection point is set at the front section of the bottom of the melting pool, a second detection point is set at the middle section of the bottom of the melting pool, and a third detection point is set at the rising channel between the flow hole and the working pool. Then, the comprehensive trend Tq = Tq1×Kq1 + Tq2×Kq2 + Tq3×Kq3, where Tq is the comprehensive trend, Tq1 is the first trend, Kq1 is the weight of the first trend, Tq2 is the second trend, Kq2 is the weight of the second trend, Tq3 is the third trend, and Kq3 is the weight of the third trend.

[0071] After calculating the overall deviation Tp and the overall trend Tq, the adjustment amount for the arch temperature can be calculated using the following formula: Tx = Tp × Tq; Where Tx is the adjustment amount of the arch top temperature, Tp is the overall deviation, and Tq is the overall trend.

[0072] Reference Figure 5 As shown, step S400 includes the following steps.

[0073] Step S410: Determine whether the adjustment amount of the arch top temperature is greater than the threshold.

[0074] When the adjustment amount of the arch temperature is small, there is no need to adjust the arch temperature, which helps to reduce the frequency of temperature fluctuations in the glass furnace. Therefore, a threshold needs to be set to compare the arch temperature adjustment amount with the threshold. In this embodiment, the threshold is -0.3.

[0075] In step S420, when the adjustment amount of the arch temperature is greater than the threshold, the fuzzing process combines the deviation and the trend to obtain the fuzzing result, and a correction coefficient is set.

[0076] When the adjustment amount of the arch temperature exceeds the threshold, the overall deviation and overall trend are fuzzified. In this embodiment, the fuzzification result is calculated using the following formula: M = Tp × 8 + Tq × 6, where M is the fuzzy processing result, Tp is the comprehensive deviation, and Tq is the comprehensive trend.

[0077] Step S430: Calculate the product of the fuzzy processing result and the correction coefficient to obtain the first lower limit value, and determine whether the crown temperature adjustment amount is less than the first lower limit value.

[0078] The correction factor is set manually, and the first lower limit value is calculated using the following formula: MIN1 = M × X = (Tp × 8 + Tq × 6) × X, where MIN1 is the first lower limit value, M is the fuzzy processing result, X is the correction coefficient, Tp is the comprehensive deviation, and Tq is the comprehensive trend.

[0079] In this embodiment, the correction factor ranges from 0 to 2. Specifically, the correction factor is 1.

[0080] Step S440, when the adjusting amount of the crown temperature is less than the first lower limit value, the adjusting amount of the crown temperature is adjusted to the value of the first lower limit value.

[0081] The adjusting amount of the crown temperature is ensured to be not less than the first lower limit value, so that the temperature of the glass liquid in the glass furnace can be rapidly changed and the response speed is improved after the crown temperature setting value is adjusted with reference to the adjusting amount of the crown temperature.

[0082] Referring to FIG. 4, step S400 further includes the following steps. Figure 6 Step S450, a second lower limit value is set, and it is judged whether the first lower limit value is less than the second lower limit value.

[0083] Step S460, when the first lower limit value is less than the second lower limit value, it is judged whether the adjusting amount of the crown temperature is less than the second lower limit value.

[0084] Step S470, when the adjusting amount of the crown temperature is less than the second lower limit value, the adjusting amount of the crown temperature is adjusted to the value of the second lower limit value.

[0085] The second lower limit value is manually set to avoid the adjusting amount of the crown temperature being too small, and the temperature in the glass furnace is rapidly adjusted by manual intervention to rapidly adjust the temperature of the glass liquid to a reasonable range, so that the quality of the glass liquid is not affected by a long adjustment time.

[0086] Referring to FIG. 4, step S400 further includes the following steps.

[0087] Figure 7 Step S480, an upper limit value is set, and it is judged whether the adjusting amount of the crown temperature is greater than the upper limit value.

[0088] Step S490, when the adjusting amount of the crown temperature is greater than the upper limit value, the adjusting amount of the crown temperature is adjusted to the value of the upper limit value.

[0089] The upper limit value is manually set to avoid the adjusting amount of the crown temperature being too large, so that the temperature in the glass furnace is not sharply changed and large fluctuations do not occur.

[0090] The adjusting amount of the crown temperature is indirectly estimated based on the measured temperature of the furnace pool body, and there is still a lag, so the upper limit value is manually set to avoid the adjusting amount of the crown temperature being too large.

[0091] The embodiment of the application further provides a glass furnace pool bottom temperature control system, the control system comprising a memory and a processor, the memory storing a computer program, and the processor implementing the glass furnace pool bottom temperature control method described above when executing the computer program.

[0092] ​Taking the processor and memory in a glass furnace bottom temperature control system as an example, which can be connected via a bus, the memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the controller via a network.

[0093] The non-transient software program and instructions required to implement the control method of the above embodiments are stored in memory. When executed by a processor, the control method described above is executed, for example, the control method described above is executed. Figure 1 Method steps S100 to S400 Figure 2 Method steps S110 to S140, Figure 3 Method steps S210 to S230, Figure 4 Method steps S310 to S320, Figure 5 Method steps S410 to S440 Figure 6 Method steps S450 to S470 Figure 7 The method steps S480 to S490, etc.

[0094] This invention also provides a glass furnace, including the glass furnace bottom temperature control system described in the above embodiments.

[0095] Since the glass furnace adopts all the technical solutions of the glass furnace bottom temperature control system of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0096] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0097] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0098] The device embodiments described above are merely illustrative, and units described as separate components may or may not be physically separate, i.e., may be located in one place or distributed over multiple network units. Part or all of the modules can be selected as needed to achieve the purposes of the embodiments.

[0099] Those skilled in the art can understand that all or some of the steps in the method disclosed above, the functional modules / units in the system and the device can be implemented as software, firmware, hardware or appropriate combinations thereof.

[0100] The terms "first", "second", "third", "fourth" and the like in the description of the application and in the claims hereof, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so termed is interchangeable under appropriate circumstances such that the embodiment of the application described herein are capable of operation in other sequences than described or illustrated herein. Moreover, the terms "comprise", "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, article, or apparatus that comprises a list of steps or units can not necessarily be limited to those steps or units, but can include additional steps or units not expressly listed or inherent to such process, method, article, or apparatus.

[0101] It should be understood that, in the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" is used to describe the relationship between the associated objects, which means that there can be three relationships, "A and / or B" can represent three cases: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0102] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative, for example, the division of the above units is only a logical functional division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0103] The units described as separate components above can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0104] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0105] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application, essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including multiple instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program storage media.

[0106] The preferred embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, and are not limited to the scope of the embodiments of the present application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the embodiments of the present application.

Claims

1. A method for controlling the temperature at the bottom of a glass furnace, characterized in that, The glass furnace includes a melting pool, a flow channel, and a working pool connected in sequence, and the control method includes: Multiple detection points are set between the bottom of the melting pool and the working pool to obtain the target temperature, current temperature and average temperature of each detection point; The deviation and trend are calculated based on the target temperature, the current temperature, and the average temperature. A comprehensive deviation is obtained by weighting multiple deviations, and a comprehensive trend is obtained by weighting multiple trends. The crown temperature adjustment amount is calculated based on the comprehensive deviation and the comprehensive trend, and the crown temperature setting value of the glass furnace is adjusted according to the crown temperature adjustment amount.

2. The method for controlling the temperature at the bottom of the glass furnace according to claim 1, characterized in that, The calculation of deviation and trend based on the target temperature, the current temperature, and the average temperature includes: Assign a deviation amplification factor and a trend amplification factor to each of the detection points; The deviation is calculated using the following formula: P = (Ta - Te) × Fp; Wherein, P is the deviation, Ta is the average temperature, Te is the target temperature, and Fp is the deviation amplification factor; The trend is calculated using the following formula: Q = (Tc - Ta) × Fq; Where Q represents the trend, Tc represents the current temperature, Ta represents the average temperature, and Fq represents the trend amplification factor.

3. The method for controlling the temperature at the bottom of the glass furnace according to claim 1, characterized in that, The process of calculating the comprehensive deviation based on the weights of multiple deviations includes: The overall deviation is calculated using the following formula: Tp=Tp1×Kp1+Tp2×Kp2+Tp3×Kp3+……+Tpn×Kpn; Wherein, Tp is the overall deviation, Tp1 is the first deviation, Kp1 is the first deviation weight, Tp2 is the second deviation, Kp2 is the second deviation weight, Tp3 is the third deviation, Kp3 is the third deviation weight, ..., Tpn is the nth deviation, Kpn is the nth deviation weight.

4. The method for controlling the temperature at the bottom of the glass furnace according to claim 1, characterized in that, The process of calculating a comprehensive trend based on the weights of multiple trends includes: The overall trend is calculated using the following formula: Tq=Tq1×Kq1+Tq2×Kq2+Tq3×Kq3+……+Tqn×Kqn; Wherein, Tq is the overall trend, Tq1 is the first trend, Kq1 is the weight of the first trend, Tq2 is the second trend, Kq2 is the weight of the second trend, Tq3 is the third trend, Kq3 is the weight of the third trend, ..., Tqn is the nth trend, Kqn is the weight of the nth trend.

5. The method for controlling the temperature at the bottom of the glass furnace according to claim 1, characterized in that, Multiple detection points are set between the bottom of the melting pool and the working pool, including: A first detection point is set at the front section of the bottom of the melting pool, a second detection point is set at the middle section of the bottom of the melting pool, and a third detection point is set between the flow hole and the working pool. The process of obtaining the target temperature, current temperature, and average temperature of each detection point includes: Obtain the first target temperature, the first current temperature, and the first average temperature at the first detection point; Obtain the second target temperature, the second current temperature, and the second average temperature at the second detection point; The third target temperature, the third current temperature, and the third average temperature of the third detection point are obtained.

6. The method for controlling the temperature at the bottom of the glass furnace according to claim 1, characterized in that, The step of adjusting the set value of the arch temperature of the glass furnace according to the arch temperature adjustment amount includes: Determine whether the adjustment amount of the arch top temperature is greater than the threshold. When the adjustment amount of the arch temperature is greater than the threshold, the comprehensive deviation and the comprehensive trend are fuzzified to obtain the fuzzing result, and a correction coefficient is set; The first lower limit value is obtained by multiplying the fuzzy processing result and the correction coefficient, and it is determined whether the crown temperature adjustment amount is less than the first lower limit value. When the adjustment amount of the arch top temperature is less than the first lower limit value, the value of the adjustment amount of the arch top temperature is adjusted to the value of the first lower limit value.

7. The method for controlling the temperature at the bottom of a glass furnace according to claim 6, characterized in that, The step of adjusting the set value of the arch temperature of the glass furnace according to the arch temperature adjustment amount also includes: Set a second lower limit value, and determine whether the first lower limit value is less than the second lower limit value; When the first lower limit is less than the second lower limit, determine whether the crown temperature adjustment amount is less than the second lower limit. When the adjustment amount of the arch top temperature is less than the second lower limit value, the value of the adjustment amount of the arch top temperature is adjusted to the value of the second lower limit value.

8. The method for controlling the temperature at the bottom of a glass furnace according to claim 6, characterized in that, The step of adjusting the set value of the arch temperature of the glass furnace according to the arch temperature adjustment amount also includes: Set an upper limit value and determine whether the adjustment amount of the arch top temperature is greater than the upper limit value; When the adjustment amount of the arch top temperature is greater than the upper limit value, the value of the adjustment amount of the arch top temperature is adjusted to the value of the upper limit value.

9. A temperature control system for the bottom of a glass furnace, characterized in that, The control system includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the glass furnace bottom temperature control method according to any one of claims 1 to 8.

10. A glass furnace, characterized in that, Includes the glass furnace bottom temperature control system as described in claim 9.

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