Kiln pressure control method, glass kiln and storage medium

Abstract

The invention discloses a kiln pressure control method, a glass kiln and a storage medium, and relates to the technical field of glass production equipment.The method comprises the steps that when the glass kiln runs to the first moment, a pressure adjusting gate plate is controlled to reduce the opening degree so that the kiln pressure of the glass kiln can be increased to the target kiln pressure; when the glass kiln runs to a target reversing moment, controlling the glass kiln to execute flame reversing operation and detecting a pressure state parameter in the glass kiln; controlling the pressure adjusting flashboard to operate according to the pressure state parameters; wherein the first moment is earlier than the target reversing moment. The application aims to improve the timeliness of kiln pressure adjustment and effectively inhibit the sudden change disturbance of the pressure in the kiln so as to shorten the kiln pressure stabilization time and reduce the energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass production equipment, in particular to a kiln pressure control method, a glass kiln and a storage medium. BACKGROUND

[0002] In the flat glass production process, the glass kiln needs to be reversed every certain time to balance the temperature distribution and the regenerator efficiency. However, the timing difference between the interruption of combustion and the establishment of a new flame at the moment of flame reversal will cause the kiln pressure to drop suddenly, easily forming a negative pressure to suck in cold air, and the positive pressure overshoot caused by the rapid establishment of a new flame will easily cause hot gas to spew out and erode the kiln body.

[0003] In the related art, PID feedback control is generally performed based on the detected kiln pressure after the flame is reversed. However, such a method has a lag in response and is difficult to suppress sudden disturbances of the kiln pressure, resulting in a long time for the kiln pressure to recover to stable and an increase in energy consumption. SUMMARY

[0004] The main purpose of the present application is to provide a kiln pressure control method, a glass kiln and a storage medium, which aims to improve the timeliness of kiln pressure adjustment and effectively suppress sudden disturbances of kiln pressure, so as to shorten the kiln pressure stabilization time and reduce energy consumption.

[0005] To achieve the above-mentioned purpose, the present application provides a kiln pressure control method applied to a glass kiln, wherein the glass kiln comprises a pressure regulating damper for regulating the kiln pressure in the glass kiln, and the kiln pressure control method comprises the following steps: When the glass kiln operates to a first time, the pressure regulating damper is controlled to reduce the opening degree so as to increase the kiln pressure of the glass kiln to a target kiln pressure; When the glass kiln operates to a target reversal time, the glass kiln is controlled to perform a flame reversal operation and detect a pressure state parameter in the glass kiln; The pressure regulating damper is controlled to operate according to the pressure state parameter; Wherein, the first time is earlier than the target reversal time.

[0006] In an embodiment, the pressure state parameter comprises a pressure drop rate, and the step of controlling the pressure regulating damper to operate according to the pressure state parameter comprises: In the case where the pressure drop rate is greater than or equal to a preset rate, the pressure regulating damper is controlled to reduce the opening degree according to a first opening degree adjustment amplitude; In the case where the pressure drop rate is less than the preset rate, the pressure regulating damper is controlled to adjust the opening degree so as to maintain the kiln pressure of the glass kiln at the target kiln pressure according to a second opening degree adjustment amplitude; The first opening degree adjustment amplitude is greater than the second opening degree adjustment amplitude.

[0007] In an embodiment, before the step of controlling the pressure regulating damper to decrease the opening degree to increase the kiln pressure of the glass furnace to the target kiln pressure, the method further comprises: When the glass furnace is running to a first time, increasing the current set kiln pressure of the glass furnace according to a target pressure compensation value to obtain the target kiln pressure; The target pressure compensation value is determined based on pressure fluctuation data after the flame reversing operation is performed before the current time.

[0008] In an embodiment, before the step of controlling the pressure regulating damper to decrease the opening degree to increase the kiln pressure of the glass furnace to the target kiln pressure when the glass furnace is running to a first time, the method further comprises: When the glass furnace is running to a second time, controlling the pressure regulating damper to adjust the opening degree to make the pressure difference between the kiln pressure of the glass furnace and the set kiln pressure less than or equal to a preset pressure difference; The second time is earlier than the first time.

[0009] In an embodiment, after the step of controlling the pressure regulating damper to operate according to the pressure state parameter, the method further comprises: In the case that the combustion state of the currently burning combustion device of the glass furnace reaches a target combustion state, decreasing the target kiln pressure and controlling the pressure regulating damper to operate according to the decreased target kiln pressure; Controlling the pressure regulating damper to increase the opening degree to a target opening degree.

[0010] In an embodiment, the step of decreasing the target kiln pressure and controlling the pressure regulating damper to operate according to the decreased target kiln pressure comprises: Decreasing the target kiln pressure at a target adjustment rate and controlling the pressure regulating damper to adjust the opening degree according to the decreased target kiln pressure until the decreased target kiln pressure reaches a set kiln pressure; The set kiln pressure is a target value of the kiln pressure in the glass furnace before the first time, and the target kiln pressure is greater than the set kiln pressure.

[0011] In an embodiment, the step of controlling the pressure regulating damper to increase the opening degree to a target opening degree comprises: Controlling the pressure regulating damper to increase the opening degree to the target opening degree in a stepwise manner.

[0012] In an embodiment, after the step of controlling the pressure regulating damper to increase the opening degree to a target opening degree, the method further comprises: In a case where the length of the end of the flame-reversing operation is greater than or equal to a preset length, the pressure-regulating damper adjustment opening degree is controlled to target the set kiln pressure.

[0013] In addition, to achieve the above-mentioned purpose, the present application further provides a glass kiln, which comprises: A pressure-regulating damper for adjusting the kiln pressure in the glass kiln; A control device, which is in communication connection with the pressure-regulating damper, and comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the kiln pressure control method as described above.

[0014] In addition, to achieve the above-mentioned purpose, the present application further provides a storage medium, which is a computer-readable storage medium, and the storage medium has a computer program stored thereon, and the computer program is executed by a processor to implement the steps of the kiln pressure control method as described above.

[0015] The one or more technical solutions provided by the present application at least have the following technical effects: before the glass kiln performs the flame-reversing operation, the kiln pressure is increased in advance to avoid the kiln pressure from suddenly dropping during the execution of the flame-reversing operation, and the pressure-regulating damper is controlled to operate based on the pressure state parameter during the execution of the flame-reversing operation to ensure the stability of the kiln pressure. Based on this, compared with the mode of feedback regulation after the kiln pressure changes after the flame-reversing operation, the timeliness of kiln pressure regulation can be effectively improved, the sudden disturbance of the kiln pressure can be effectively inhibited, the kiln pressure stabilization time can be shortened, the heat loss during the reversing process can be reduced to reduce the energy consumption of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0018] Figure 1 A device structure schematic diagram of a hardware operating environment involved in the kiln pressure control method in the embodiments of the present application; Figure 2 A flowchart schematic diagram provided by the kiln pressure control method in Embodiment One of the present application; Figure 3A flowchart provided for the second embodiment of the kiln pressure control method of the present application; Figure 4 A schematic diagram of the change trend of kiln pressure and pressure regulating damper opening degree in the application process of the kiln pressure control method of the present application.

[0019] The object implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and not to limit the present application.

[0021] In order to better understand the technical solutions of the present application, the specific embodiments will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The main solution of the embodiments of the present application is: based on a glass kiln provided with a pressure regulating damper, a kiln pressure control method is proposed, when the glass kiln runs to a first time, the pressure regulating damper is controlled to reduce the opening degree to increase the kiln pressure of the glass kiln to a target kiln pressure; when the glass kiln runs to a target reversing time, the glass kiln is controlled to perform a flame reversing operation and detect a pressure state parameter in the glass kiln; the pressure regulating damper is controlled to operate according to the pressure state parameter; wherein the first time is earlier than the target reversing time.

[0023] In the present embodiment, for the sake of description, the following is described with the glass kiln as the execution subject.

[0024] In the related art, generally, PID feedback control is performed based on the detected kiln pressure after flame reversing, however, such a way has a response lag, it is difficult to suppress the sudden disturbance of the kiln pressure, and there is a problem of long kiln pressure recovery stabilization time and increased energy consumption.

[0025] The present application provides the above-mentioned solution, before the glass kiln performs a flame reversing operation, the kiln pressure is first increased in advance to avoid the kiln pressure drop during the execution of the flame reversing operation, and the pressure regulating damper is controlled to operate based on the pressure state parameter during the execution of the flame reversing operation to ensure the stability of the kiln pressure. Based on this, compared with the way of feedback regulation after the kiln pressure changes after the flame reversing operation, the kiln pressure regulation timeliness can be effectively improved, the kiln pressure fluctuation can be effectively suppressed, the kiln pressure stabilization time can be shortened, the heat loss during reversing can be reduced to reduce the energy consumption of the equipment. Wherein, the suppression of the kiln pressure fluctuation can effectively reduce the kiln temperature fluctuation during the flame reversing, stabilize the kiln temperature to reduce the generation of glass quality defects (such as silica refractory, primary clinohedral zircon, etc.), and can avoid the erosion of the kiln body caused by the positive pressure rush of hot gas, thereby prolonging the service life of the kiln.

[0026] This application provides a glass furnace for producing flat glass.

[0027] In this embodiment, refer to Figure 1 The glass furnace includes a control device 100 and a pressure regulating gate 200. The pressure regulating gate 200 is communicatively connected to the control device 100 and is used to regulate the furnace pressure inside the glass furnace.

[0028] The glass kiln may include a kiln body, a first combustion device and a second combustion device located on opposite sides of the kiln body, and a pressure regulating gate 200 located in the communication channel between the kiln body and the external environment. Different opening degrees of the pressure regulating gate 200 result in different kiln pressures within the kiln body, and the kiln pressure is negatively correlated with the opening degree of the pressure regulating gate 200.

[0029] In one feasible implementation, refer to Figure 1 A pressure sensor 300 can be installed inside the kiln to detect the kiln pressure inside the kiln.

[0030] Among them, reference Figure 1 The control device 100 includes: at least one processor 1001; and a memory 1002 communicatively connected to the at least one processor 1001, and a timer 1003, etc.; wherein the memory 1002 stores instructions that can be executed by the at least one processor 1001, the instructions being executed by the at least one processor 1001 to enable the at least one processor 1001 to perform the kiln pressure control method in the following embodiments.

[0031] The following is for reference. Figure 1 The diagram illustrates a structural schematic of a control device 100 suitable for implementing embodiments of this application. The control device 100 in the embodiments of this application may include, but is not limited to, mobile terminals and fixed terminals. Figure 1 The control device 100 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0032] like Figure 1As shown, the control device 100 can include a processor 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a memory 1002, which can be programs in a read only memory (ROM) or programs loaded from a storage device into a random access memory (RAM). In the RAM, various programs and data required for the operation of the control device 100 are also stored. The processor 1001, the memory 1002 (ROM and RAM), and an input / output (I / O) interface are connected to each other through a bus. Generally, the following systems can be connected to the I / O interface: input devices including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices including, for example, a magnetic tape, a hard disk, etc.; and communication devices. The communication devices can allow the control device 100 to communicate with other devices wirelessly or by wire to exchange data. Although the control device 100 having various systems is shown in the figure, it should be understood that all the systems shown are not required to be implemented or possessed. More or fewer systems can be alternatively implemented or possessed.

[0033] In particular, according to the embodiments disclosed in the present application, the method flow described in the following embodiments can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program codes for executing the method shown in the flow chart. In such embodiments, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device. When the computer program is executed by the processor 1001, the above-mentioned functions defined in the kiln pressure control method of the embodiments disclosed in the present application are performed.

[0034] The glass kiln provided in the present application adopts the kiln pressure control method in the following embodiments, which can solve the technical problem of how to improve the timeliness of kiln pressure adjustment and effectively suppress the sudden disturbance of kiln pressure. Compared with the prior art, the glass kiln provided in the present application has the same beneficial effects as the kiln pressure control method provided in the following embodiments, and other technical features in the glass kiln are the same as the features disclosed in the following embodiment method, which will not be repeated here.

[0035] It should be noted that the execution subject of the embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a glass kiln, etc. capable of realizing the above functions. The glass kiln is taken as an example to describe the embodiment and the following embodiments.

[0036] Based on this, the present application provides a kiln pressure control method, which refers to Figure 2 , Figure 2 The flowchart of the first embodiment of the kiln pressure control method of the present application is shown in the figure.

[0037] In the embodiment, the kiln pressure control method comprises steps S10-S30: Step S10, when the glass kiln runs to the first time, the opening of the pressure regulating damper is reduced to increase the kiln pressure of the glass kiln to the target kiln pressure. During the operation of the glass kiln, one of the first and second combustion devices is in a combustion state, and the other is in a stop combustion state.

[0038] The first time and the target reversing time are separated by a first time length, and the value range of the first time length can be [5 seconds, 15 seconds].

[0039] The target kiln pressure can be a fixed value set in advance, or a value determined according to the actual situation of the glass kiln.

[0040] During the process of reducing the opening of the pressure regulating damper, the opening of the pressure regulating damper is adjusted with the target kiln pressure as the target. When the actual kiln pressure in the glass kiln is less than the target kiln pressure, the pressure regulating damper is controlled to maintain the reduced opening, until the actual kiln pressure in the glass kiln reaches the target kiln pressure, and the pressure regulating damper is controlled to maintain the current opening.

[0041] Wherein, when the kiln pressure reaches the target kiln pressure and has not reached the target reversing time, the opening of the pressure regulating damper can be adjusted based on the target kiln pressure to maintain the kiln pressure at the target kiln pressure.

[0042] Step S20, when the glass kiln runs to the target reversing time, the glass kiln performs a flame reversing operation and detects the pressure state parameter in the glass kiln, and the first time is earlier than the target reversing time. The target reversing time is a target time set in advance to perform the flame reversing operation.

[0043] The flame reversing operation refers to switching the device in the combustion state to the stop combustion state, and switching the device in the stop combustion state to the combustion state.

[0044] The pressure state parameter can include at least one of a pressure drop amplitude, a pressure drop rate, an instantaneous pressure value, etc.

[0045] The pressure state parameter is a parameter detected in real time during the flame reversing operation.

[0046] In step S30, the pressure adjusting damper is controlled according to the pressure state parameter.

[0047] In the embodiment, the pressure adjusting damper is controlled according to the pressure state parameter to make the fluctuation value of the kiln pressure less than or equal to a preset fluctuation amplitude and / or the pressure difference between the kiln pressure and the target kiln pressure less than or equal to a preset pressure difference.

[0048] When the pressure state parameter includes the pressure drop amplitude or the pressure drop rate, the pressure adjusting damper can be controlled to reduce the opening degree according to the pressure drop amplitude or the pressure drop rate, and the opening degree adjustment amplitude when the pressure adjusting damper reduces the opening degree is positively correlated with the pressure drop amplitude or the pressure drop rate.

[0049] When the pressure state parameter includes the instantaneous pressure value, the pressure adjusting damper can be controlled to reduce the opening degree according to the instantaneous pressure value, and the opening degree adjustment amplitude when the pressure adjusting damper reduces the opening degree is positively correlated with the instantaneous pressure value.

[0050] The embodiment provides a kiln pressure control method. Before a glass kiln performs a flame reversing operation, the kiln pressure is increased in advance to avoid a sudden drop of the kiln pressure during the flame reversing operation, and the pressure adjusting damper is controlled according to a pressure state parameter during the flame reversing operation to ensure the stability of the kiln pressure. Therefore, compared with a feedback adjustment mode after the kiln pressure changes after the flame reversing operation, the timeliness of the kiln pressure adjustment can be effectively improved, the sudden disturbance of the kiln pressure can be effectively inhibited, the kiln pressure stabilization time can be shortened, the heat loss during the reversing process can be reduced, and the energy consumption of equipment can be reduced. Inhibition of the kiln pressure fluctuation can effectively reduce the temperature fluctuation in the kiln during the flame reversing, stabilize the temperature in the kiln, reduce the generation of glass quality defects (such as silica refractory, primary clinohedral zircon, etc.), and avoid the erosion of the kiln body caused by the outward spraying of hot gas due to the positive pressure, thereby prolonging the service life of the kiln.

[0051] In an available embodiment, the pressure state parameter includes a pressure drop rate, and the step of controlling the pressure adjusting damper according to the pressure state parameter includes: in a case where the pressure drop rate is greater than or equal to a preset rate, controlling the pressure adjusting damper to reduce the opening degree according to a first opening degree adjustment amplitude; and in a case where the pressure drop rate is less than the preset rate, controlling the pressure adjusting damper to adjust the opening degree to maintain the kiln pressure of the glass kiln at the target kiln pressure according to a second opening degree adjustment amplitude, wherein the first opening degree adjustment amplitude is greater than the second opening degree adjustment amplitude.

[0052] In the embodiment, the first opening adjustment amplitude can be determined according to the second opening adjustment amplitude and a first coefficient. For example, the first opening adjustment amplitude is a product of the second opening adjustment amplitude and the first coefficient, and the first coefficient is greater than 1 (for example, the first coefficient is 1.5).

[0053] The second opening adjustment amplitude can be a pre-set fixed value, or a parameter value determined according to the actual situation of the glass furnace. For example, the second opening adjustment amplitude can be determined according to the opening of the pressure adjusting damper at the target reversing time and / or the ambient temperature of the environment where the glass furnace is located.

[0054] In the embodiment, when the furnace pressure is detected to rapidly decrease during the execution of the flame reversing operation, the pressure adjusting damper is controlled to decrease the opening based on the larger first opening adjustment amplitude, so that the furnace pressure rapidly increases, thereby timely compensating for the decrease of the furnace pressure, effectively reducing the furnace pressure decrease rate, effectively shortening the time for the furnace pressure to reach the stable state, and reducing the waste of furnace energy consumption. When the furnace pressure is not detected to rapidly decrease, the pressure adjusting damper is controlled to adjust the opening based on the smaller second opening adjustment amplitude to maintain the furnace pressure at the target furnace pressure. Based on this, it is beneficial to accurately reach the target furnace pressure.

[0055] In a feasible implementation, before the step of controlling the pressure adjusting damper to decrease the opening to increase the furnace pressure of the glass furnace to the target furnace pressure, the method further includes: when the glass furnace is operated to a first time, increasing the current set furnace pressure of the glass furnace according to a target pressure compensation value to obtain the target furnace pressure, wherein the target pressure compensation value is determined based on pressure fluctuation data after the flame reversing operation is executed before the current time.

[0056] The set furnace pressure is a pre-set target value of the furnace pressure during the operation of the glass furnace. When the furnace pressure of the glass furnace reaches the set furnace pressure, the quality requirement of the glass produced by the glass furnace is met.

[0057] The target pressure compensation value can be a pre-set fixed value, or a parameter value determined according to the actual situation of the glass furnace.

[0058] In the embodiment, the target pressure compensation value is determined according to the pressure fluctuation data after the flame reversing operation is executed one or more times before the current time. In some implementations, the target pressure compensation value can also be determined according to the above pressure fluctuation data and the combustion intensity of the combustion device currently in the combustion state.

[0059] In the embodiment, the kiln pressure is pre-compensated according to the actual situation of the glass kiln by the above-mentioned manner, which is beneficial to realize dynamic adjustment of the kiln pressure compensation parameters, adapt to fuel heat value fluctuation, reversing collection change and other complex situations, improve the timeliness of kiln pressure adjustment and the self-adaptability to different working conditions, further inhibit the kiln pressure fluctuation caused by flame reversing operation, shorten the kiln pressure stabilization time and reduce the energy consumption of the kiln.

[0060] In a feasible implementation, before the step of controlling the pressure regulating damper to reduce the opening degree to increase the kiln pressure of the glass kiln to the target kiln pressure when the glass kiln operates to the first time, the method further comprises the step of: when the glass kiln operates to the second time, controlling the pressure regulating damper to adjust the opening degree so that the pressure difference between the kiln pressure of the glass kiln and the set kiln pressure is less than or equal to a preset pressure difference; wherein the second time is earlier than the first time.

[0061] When the pressure difference is less than or equal to the preset pressure difference, it indicates that the kiln pressure is stabilized at the set kiln pressure.

[0062] Wherein, when the kiln pressure of the glass kiln reaches the set kiln pressure, it is in a slightly positive pressure state.

[0063] The interval time length between the second time and the target reversing time is a second time length, and the value range of the second time length can be [1 minute, 3 minutes]. Wherein, the first time length and the second time length can be a pre-set fixed time length, or a time length determined according to the actual situation of the glass kiln, for example, the first time length and the second time length can be determined according to the highest temperature in the glass kiln before the second time.

[0064] In the embodiment, when the glass kiln operates to the second time, the actual kiln pressure of the glass kiln can be detected in real time or at an interval set time length, the target kiln pressure is taken as the target value of the PID controller, the actual kiln pressure is input into the PID controller, and the opening degree adjustment parameter output by the PID controller is used to control the pressure regulating damper to adjust the opening degree, so as to stabilize the kiln pressure at the set kiln pressure.

[0065] In the embodiment, before the flame reversing operation is performed, the kiln pressure is first stabilized based on the set kiln pressure, and then the kiln pressure is increased at the first time to realize pre-compensation, which is beneficial to improve the accuracy and effectiveness of the kiln pressure pre-compensation, further inhibit the kiln pressure fluctuation caused by the flame reversing operation, shorten the kiln pressure stabilization time and reduce the energy consumption of the kiln.

[0066] Based on any of the above embodiments, in the second embodiment of the present application, the same or similar contents as the above embodiments can be referred to the above introduction, and will not be described in detail. On this basis, please refer to Figure 3 , after step S30, the kiln pressure control method further comprises steps S40 and S50: Step S40, in case that the current combustion state of the combustion device currently combusting reaches the target combustion state, reducing the target furnace pressure and controlling the pressure adjusting damper to operate according to the reduced target furnace pressure; The target combustion state refers to the flame of the combustion device being stably established. In this case, the target combustion state can be considered to be reached in case that the fuel flow of the combustion device currently combusting is detected and the detected fuel flow is greater than or equal to a preset flow (for example, 90% of the rated flow).

[0067] In this embodiment, the target furnace pressure is continuously reduced or reduced in stages, and the opening degree of the pressure adjusting damper is adjusted according to the current target furnace pressure during the reduction of the target furnace pressure, so that the opening degree of the pressure adjusting damper can be increased.

[0068] In this embodiment, the target furnace pressure is continuously reduced or reduced in stages, and the opening degree of the pressure adjusting damper is adjusted according to the current target furnace pressure during the reduction of the target furnace pressure, so that the opening degree of the pressure adjusting damper can be increased.

[0069] Step S50, controlling the pressure adjusting damper to increase the opening degree to a target opening degree.

[0070] The pressure adjusting damper can continuously increase the opening degree to the target opening degree, or the pressure adjusting damper can increase the opening degree to the target opening degree in stages.

[0071] The target opening degree can be an opening degree manually set by a worker, or can be a memory opening degree, for example, the memory opening degree is the opening degree of the pressure adjusting damper recorded at the first time.

[0072] In the embodiment, the pressure regulating damper is controlled to increase the opening degree to the target opening degree in a stepped manner. Specifically, a corresponding preset ratio can be set at different time points in sequence, respectively, and a sub-target opening degree at each time point is determined according to the preset ratio and the target opening degree corresponding to the target opening degree, wherein the interval time length between different time points and the end time of the flame reversing operation is different, and the preset ratio corresponding to the latest time point in the different time points is 1, that is, the sub-target opening degree corresponding to the latest time point is the target opening degree. Based on this, the pressure regulating damper is controlled to increase the opening degree to the corresponding sub-target opening degree at each time point, so as to realize the pressure regulating damper to increase the opening degree to the target opening degree in a stepped manner. In the embodiment, the number of different time points can be set to 5. In other embodiments, the number of different time points can be set to more or less according to actual conditions, for example, 3, 4 or 6, etc.

[0073] In the embodiment, after the flame is stably established after the flame reversing operation, the kiln pressure target value for adjusting the pressure regulating damper is first reduced in the first stage, and then the opening degree of the pressure regulating damper is controlled to increase in the second stage. Based on this, the pre-compensation of the kiln pressure can be realized in stages to prevent the hot gas from spouting out to erode the kiln body due to the pressure overshoot when the new flame is established, thereby reducing the loss of hot gas to save energy and prolonging the service life of the kiln. Among them, the kiln pressure target value in the first stage continuously decreases at a target adjustment rate, and the opening degree of the pressure regulating damper in the second stage increases in stages, which is beneficial to avoid the instantaneous overlarge kiln pressure and reduce the overlarge fluctuation of the kiln pressure, thereby further preventing the hot gas from spouting out due to the overlarge kiln pressure.

[0074] In a feasible implementation manner, after the step of controlling the pressure regulating damper to increase the opening degree to the target opening degree, the method further comprises: In the case where the end time length of the flame reversing operation is greater than or equal to the preset time length, the pressure regulating damper is controlled to adjust the opening degree with the set kiln pressure as the target.

[0075] In the embodiment, the opening degree of the pressure regulating damper can be controlled based on the adaptive MPC controller and with the set kiln pressure as the target until the second time or the first time corresponding to the next flame reversing operation is reached.

[0076] In the embodiment, by the above-mentioned manner, it is beneficial to ensure that the kiln pressure in the glass kiln can guarantee the quality requirements of the produced glass.

[0077] In order to intuitively illustrate the kiln pressure stabilization effect that can be achieved by the kiln pressure control method of the present application, the kiln pressure control method of the present application is combined with the kiln pressure control method of the prior art in Figure 4 , Figure 4 The yellow curve in the figure represents the change trend of the kiln pressure in the glass kiln, Figure 4The blue curve in the figure represents the opening change trend of the pressure regulating damper, and the kiln pressure is set to 3.0 Pa. During the flame reversing operation, based on the above control, the minimum kiln pressure is 0.3 Pa, which is 2.7 Pa lower than the set kiln pressure, and the maximum kiln pressure is 6.2 Pa, which is 3.2 Pa higher than the set kiln pressure. The kiln pressure rises and falls by a small amount, avoiding sharp drops and sharp rises, and maintaining relative stability. The time for the kiln pressure to recover to the set kiln pressure is 40 to 50 seconds. In the traditional kiln pressure control method, the kiln pressure rises and falls by 5 to 10 Pa during the flame reversing operation, and the time for the kiln pressure to recover to the set kiln pressure is 60 to 90 seconds. Therefore, compared with the traditional kiln pressure control method, the kiln pressure control method of the present application can effectively suppress kiln pressure fluctuations, shorten the kiln pressure stabilization time, reduce reversing heat loss, and significantly extend the kiln life.

[0078] It should be noted that the above examples are only for understanding the present application and do not constitute a limitation on the kiln pressure control method of the present application. More forms of simple transformation based on this technical concept are within the scope of protection of the present application.

[0079] The present application provides a computer readable storage medium having computer readable program instructions (i.e. computer programs) stored thereon, the computer readable program instructions being used to execute the kiln pressure control method in the above embodiments.

[0080] The computer readable storage medium provided by the present application may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of computer readable storage media can include, but are not limited to, an electrical connection with one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any appropriate medium, including but not limited to electrical wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0081] The computer readable storage medium can be contained in the glass furnace or can exist separately from the glass furnace.

[0082] The computer readable storage medium carries one or more programs, which, when executed by the processor, cause the processor to perform the flow of the kiln pressure control method embodiments.

[0083] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0084] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer programs) for executing the kiln pressure control method, and can solve the technical problem of how to improve the kiln pressure regulation and timeliness and effectively suppress the sudden disturbance of the kiln pressure. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the kiln pressure control method provided by the above embodiments, and will not be described here.

[0085] The computer program product of the present application can be a computer program embodied on a non-transitory computer readable medium. Such non-transitory computer readable medium can include, but is not limited to, floppy diskettes, CD-ROMs, DVDs, flash memories, memory sticks, and hard drives.

[0086] It should be understood that each part of the present application can be realized by hardware, software, firmware, or a combination thereof. The modules described in the embodiments of the present application can be realized by software or hardware. In some cases, the name of the module does not limit the module itself. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0087] The above description is only some embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of kiln pressure control, characterized by, The application is applied to a glass furnace, the glass furnace comprises a pressure regulating damper for regulating the furnace pressure in the glass furnace, and the furnace pressure control method comprises: when the glass furnace runs to a first time, the pressure regulating damper is controlled to reduce the opening degree so as to increase the furnace pressure of the glass furnace to a target furnace pressure; when the glass furnace runs to a target reversing time, the glass furnace is controlled to perform a flame reversing operation and detect a pressure state parameter in the glass furnace; the pressure regulating damper is controlled to operate according to the pressure state parameter; wherein the first time is earlier than the target reversing time.

2. The kiln pressure control method as claimed in claim 1, wherein, The pressure state parameter comprises a pressure drop rate, and the step of controlling the pressure regulating damper to operate according to the pressure state parameter comprises: in the case that the pressure drop rate is greater than or equal to a preset rate, the pressure regulating damper is controlled to reduce the opening degree according to a first opening degree adjustment amplitude; in the case that the pressure drop rate is less than the preset rate, the pressure regulating damper is controlled to adjust the opening degree so as to maintain the furnace pressure of the glass furnace at the target furnace pressure according to a second opening degree adjustment amplitude; wherein the first opening degree adjustment amplitude is greater than the second opening degree adjustment amplitude.

3. The kiln pressure control method as claimed in claim 1, wherein, Before the step of controlling the pressure regulating damper to reduce the opening degree so as to increase the furnace pressure of the glass furnace to a target furnace pressure, the method further comprises: when the glass furnace runs to a first time, the target furnace pressure is obtained by increasing the current set furnace pressure of the glass furnace according to a target pressure compensation value; wherein the target pressure compensation value is determined based on pressure fluctuation data after the flame reversing operation is performed before the current time.

4. The kiln pressure control method as claimed in claim 3, wherein, Before the step of controlling the pressure regulating damper to reduce the opening degree so as to increase the furnace pressure of the glass furnace to a target furnace pressure when the glass furnace runs to a first time, the method further comprises: when the glass furnace runs to a second time, the pressure regulating damper is controlled to adjust the opening degree so as to make the pressure difference between the furnace pressure of the glass furnace and the set furnace pressure less than or equal to a preset pressure difference; wherein the second time is earlier than the first time.

5. The kiln pressure control method of any one of claims 1 to 4, wherein, After the step of controlling the pressure regulating damper to operate according to the pressure state parameter, the method further comprises: in the case that the combustion state of the currently combusting combustion device of the glass furnace reaches a target combustion state, the target furnace pressure is reduced, and the pressure regulating damper is controlled to operate according to the reduced target furnace pressure; the pressure regulating damper is controlled to increase the opening degree to a target opening degree.

6. The kiln pressure control method as claimed in claim 5, wherein, The step of reducing the target furnace pressure and controlling the pressure regulating damper to operate according to the reduced target furnace pressure comprises: the target furnace pressure is reduced at a target adjustment rate, and the pressure regulating damper is controlled to adjust the opening degree according to the reduced target furnace pressure until the reduced target furnace pressure reaches a set furnace pressure; wherein the set furnace pressure is a target value of the furnace pressure in the glass furnace before the first time, and the target furnace pressure is greater than the set furnace pressure.

7. The kiln pressure control method as claimed in claim 6, wherein, The step of controlling the pressure regulating damper to increase the opening degree to a target opening degree comprises: the pressure regulating damper is controlled to increase the opening degree to the target opening degree in a stepwise manner.

8. The kiln pressure control method as claimed in claim 6, wherein, The step of controlling the pressure regulating damper to increase the opening degree to the target opening degree further comprises: In a case where the length of the flame reversing operation is greater than or equal to the preset length, the pressure regulating damper adjustment opening degree is controlled to target the set kiln pressure.

9. A glass furnace characterized by, The glass kiln comprises: a pressure regulating damper for regulating the kiln pressure in the glass kiln; a control device, the pressure regulating damper being in communication connection with the control device, the control device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the kiln pressure control method according to any one of claims 1 to 8.

10. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the kiln pressure control method according to any one of claims 1 to 8.

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