Device and method for detecting flue gas in carbonization furnace

Abstract

The invention discloses a device and a method for detecting flue gas in a carbonization furnace. The device comprises a flue gas color identification module, a flue gas concentration detection module, an analysis processing module and an alarm module. The flue gas color recognition module is used for recognizing the color of flue gas in the carbonization furnace. The flue gas concentration detection module is used for detecting the flue gas concentration in the carbonization furnace, and the flue gas color identification module and the flue gas concentration detection module are both mounted at a waste discharge pipeline of the carbonization furnace; the flue gas color identification module and the flue gas concentration detection module are electrically connected with the analysis processing module, and the analysis processing module is used for analyzing and processing the flue gas concentration and flue gas color in the carbonization furnace; and the analysis processing module is electrically connected with the alarm module, and the alarm module is used for executing a corresponding alarm action according to an analysis processing result of the analysis processing module. Through cooperation of the flue gas color identification module and the flue gas concentration detection device, the state in the carbonization furnace is detected in real time, and the yield loss caused by abnormal waste gas in the low-temperature carbonization furnace is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber production, and in particular to a smoke detection device and method in a carbonization furnace. Background Art

[0002] In the production of carbon fiber, the pre-oxidized filaments undergo pyrolysis and polycondensation during the low-temperature carbonization process, producing a large amount of by-product flue gas and tar. When solid fiber is converted into gaseous flue gas, the volume increases many times, and the space in the low-temperature carbonization furnace is filled with it, which seriously pollutes the running fiber and needs to be discharged out of the furnace instantly, otherwise it will seriously pollute the fiber and affect continuous and stable production. At present, the control of waste gas and tar in the furnace is mainly carried out through regular inspections. The color and amount of flue gas in the low-temperature carbonization furnace are manually observed with the naked eye under the action of a strong flashlight to judge the state of the low-temperature carbonization furnace. When this method is used for control, when an abnormal state occurs, it cannot be discovered in time, and in the current artificial judgment mode, the inspection personnel may not be able to discover it immediately, resulting in the continued existence of the abnormal state, causing continuous pollution to the fiber, and the artificial judgment is affected by the subjective factors of the observer, such as experience, judgment criteria, etc., which may lead to different judgment results for different observers, affecting the control effect, and unable to detect the state in the furnace in real time, resulting in low control efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a device and method for detecting smoke in a carbonization furnace.

[0004] A first aspect of the present invention provides a smoke detection device in a carbonization furnace, comprising:

[0005] A flue gas color recognition module, used to recognize the color of flue gas in the carbonization furnace, wherein the flue gas color recognition module is installed at the exhaust pipe of the carbonization furnace;

[0006] A smoke concentration detection module, used to detect the smoke concentration in the carbonization furnace, wherein the smoke concentration detection module is installed at the exhaust pipe of the carbonization furnace;

[0007] An analysis and processing module, the smoke color recognition module and the smoke concentration detection module are electrically connected to the analysis and processing module respectively, and the analysis and processing module is used to analyze and process the smoke concentration and smoke color in the carbonization furnace;

[0008] An alarm module, the analysis and processing module is electrically connected to the alarm module, and the alarm module is used to perform a corresponding alarm action according to the analysis and processing result of the analysis and processing module.

[0009] In some embodiments, the smoke color recognition module includes an RGB smoke color recognition sensor;

[0010] The smoke concentration detection module includes a smoke concentration detection sensor;

[0011] The alarm module includes an alarm light, and the alarm module is used to display different lights according to the analysis and processing results.

[0012] In some embodiments, the smoke detection device further includes an abnormality alarm module;

[0013] The input end of the abnormal alarm module is connected to the output end of the analysis and processing module, and the output end of the abnormal alarm module is connected to the input end of the alarm light;

[0014] When the smoke color and / or the smoke concentration exceeds a preset value, the analysis and processing module controls the alarm light to display different lights through the abnormal alarm module.

[0015] In some embodiments, the abnormal alarm module includes a color abnormality switch, an upper concentration limit switch, a lower concentration limit switch, and a distributed control system;

[0016] The color abnormality switch, the concentration upper limit switch and the concentration lower limit switch are all electrically connected to the analysis and processing module, the output ends of the color abnormality switch, the concentration upper limit switch and the concentration lower limit switch are respectively connected to the distributed control system, and the output end of the distributed control system is electrically connected to the alarm module.

[0017] The second aspect of the present invention further provides a method for detecting smoke in a carbonization furnace, which is applied to the device described in any one of the first aspects above, and comprises the following steps:

[0018] Detect the color of flue gas in the carbonization furnace and obtain a first detection result;

[0019] Analyze and process the first detection result, and if the first detection result meets a first alarm condition, control the alarm module to execute a first alarm action;

[0020] If the first detection result does not meet the first alarm condition, detecting the flue gas concentration in the carbonization furnace to obtain a second detection result;

[0021] Analyzing and processing the second detection result, and if the second detection result meets a second alarm condition, controlling the alarm module to execute a second alarm action;

[0022] If the second detection result does not meet the second alarm condition, determine whether the second detection result meets the third alarm condition. If the second detection result meets the third alarm condition, control the alarm module to perform the third alarm action. If the second detection result does not meet the third alarm condition, re-detect the color of the flue gas in the carbonization furnace.

[0023] In some embodiments, the first detection result includes the RGB value of the smoke in the carbonization furnace, and the alarm module includes an alarm light;

[0024] The step of analyzing and processing the first detection result and controlling the alarm module to execute the first alarm action if the first detection result meets the first alarm condition specifically includes:

[0025] Obtaining the RGB value of the flue gas in the carbonization furnace;

[0026] The acquired RGB value of the flue gas is converted into an electrical signal and transmitted to an analysis and processing module, and the analysis and processing module determines whether the RGB value of the flue gas meets a preset range value. If so, the analysis and processing module sends a first switch signal to the color abnormality switch, so that the color abnormality switch controls the alarm light to display a first color.

[0027] In some embodiments, the step of the analysis and processing module determining whether the RGB value of the smoke meets a preset range value specifically includes:

[0028] If the R value of the flue gas in the carbonization furnace is between 200 and 255, the G value is between 98 and 255, and the B value is equal to 0, the alarm light is controlled to display the first color.

[0029] In some embodiments, if the first detection result does not meet the first alarm condition, the fume concentration in the carbonization furnace is detected, and the step of obtaining the second detection result specifically includes:

[0030] Determine whether the R value of the flue gas in the carbonization furnace is less than 200 or the R value is greater than 255. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result. If not, determine whether the G value is less than 98 or the G value is greater than 255. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result. If not, determine whether the B value is a non-zero value. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result.

[0031] In some embodiments, the second detection result includes a concentration value of the flue gas in the carbonization furnace;

[0032] The step of analyzing and processing the second detection result, and if the second detection result meets the second alarm condition, controlling the alarm module to execute the second alarm action specifically includes:

[0033] Obtaining a concentration value of the flue gas in the carbonization furnace;

[0034] The acquired concentration value is converted into an electrical signal and transmitted to the analysis and processing module, and the analysis and processing module determines whether the concentration value is less than the lower limit value of the flue gas concentration. If so, the analysis and processing module sends a second switch signal to the lower limit switch of the concentration, so that the lower limit switch of the concentration controls the alarm light to display a second color.

[0035] In some embodiments, if the second detection does not meet the second alarm condition, then determining whether the second detection result meets the third alarm condition, if the second detection result meets the third alarm condition, then controlling the alarm module to perform the third alarm action, if the second detection result does not meet the third alarm condition, then re-detecting the color of the flue gas in the carbonization furnace specifically includes:

[0036] The acquired concentration value is converted into an electrical signal and transmitted to an analysis and processing module, and the analysis and processing module determines whether the concentration value is greater than or equal to the lower limit of the smoke concentration. If so, the analysis and processing module compares the concentration value with the upper limit of the smoke concentration;

[0037] When the concentration value is greater than the upper limit value of the smoke concentration, the analysis and processing module sends a third switch signal to the upper limit switch of the concentration, so that the upper limit switch of the concentration controls the warning light to display a third color;

[0038] When the concentration value is less than or equal to the upper limit of the flue gas concentration, the analysis and processing module controls the flue gas color recognition module to re-detect the color of the flue gas in the carbonization furnace.

[0039] The invention provides a device and method for detecting smoke in a carbonization furnace, which has the following beneficial effects:

[0040] The present invention provides a smoke detection device in a carbonization furnace. Through the analysis and processing module, the smoke color and concentration can be detected and analyzed in real time, and potential safety hazards such as incomplete combustion and leakage in the carbonization furnace can be discovered in time to avoid accidents such as fire and explosion. Through intelligent analysis, the operating parameters of the carbonization furnace can be optimized, the combustion efficiency can be improved, and the energy consumption and production costs can be reduced. Through the automated detection and alarm module, the burden on operators can be reduced, and management efficiency can be improved. At the same time, it also helps to realize remote monitoring and intelligent management. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of a flow chart of a smoke detection device in a carbonization furnace provided by an exemplary embodiment of the present invention;

[0043] Figure 2 A schematic flow chart of a method for detecting smoke in a carbonization furnace provided by an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0044] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0045] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the production of carbon fiber, the pre-oxidized filaments undergo pyrolysis and polycondensation during the low-temperature carbonization process, producing a large amount of by-product flue gas and tar. When solid fiber is converted into gaseous flue gas, the volume increases many times, and the space in the low-temperature carbonization furnace is filled with it, which seriously pollutes the running fiber and needs to be discharged out of the furnace instantly, otherwise it will seriously pollute the fiber and affect continuous and stable production. At present, the control of waste gas and tar in the furnace is mainly carried out through regular inspections. The color and amount of flue gas in the low-temperature carbonization furnace are manually observed with the naked eye under the action of a strong flashlight to judge the state of the low-temperature carbonization furnace. When this method is used for control, when an abnormal state occurs, it cannot be discovered in time, and in the current artificial judgment mode, the inspection personnel may not be able to discover it immediately, resulting in the continued existence of the abnormal state, causing continuous pollution to the fiber, and the artificial judgment is affected by the subjective factors of the observer, such as experience, judgment criteria, etc., which may lead to different judgment results for different observers, affecting the control effect, and unable to detect the state in the furnace in real time, resulting in low control efficiency.

[0047] Combine the following Figure 1-Figure 2The embodiments of the present invention are further described.

[0048] In order to solve the above technical problems, the present invention provides a device and method for detecting smoke in a carbonization furnace, wherein the device for detecting smoke in a carbonization furnace detects and analyzes the color and concentration of smoke in real time through an analysis and processing module, and can timely discover potential safety hazards such as incomplete combustion and leakage in the carbonization furnace, and avoid accidents such as fire and explosion. Through intelligent analysis, the operating parameters of the carbonization furnace can be optimized, the combustion efficiency can be improved, and the energy consumption and production costs can be reduced. Through the automated detection and alarm module, the burden of the operator can be reduced, the management efficiency can be improved, and it also helps to realize remote monitoring and intelligent management. Through the coordination of the smoke color recognition module and the smoke concentration detection module, the real-time detection and abnormal state alarm of the state in the low-temperature carbonization furnace can be realized, the timeliness of the abnormal situation processing of the production line can be improved, and the production loss caused by the abnormal exhaust gas in the low-temperature carbonization furnace can be effectively reduced; at the same time, the current mode of artificial regular inspection of the state in the low-temperature carbonization furnace is changed, and the degree of automation of carbon fiber production is effectively improved.

[0049] An exemplary embodiment of the present disclosure provides a smoke detection device in a carbonization furnace, referring to Figure 1 , including a flue gas color recognition module, a flue gas concentration detection module, an analysis and processing module and an alarm module. The flue gas color recognition module is used to identify the flue gas color in the carbonization furnace, and the flue gas color recognition module is installed at the exhaust pipe of the carbonization furnace. The flue gas concentration detection module is used to detect the flue gas concentration in the carbonization furnace, and the flue gas concentration detection module is installed at the exhaust pipe of the carbonization furnace; the flue gas color recognition module and the flue gas concentration detection module are electrically connected to the analysis and processing module respectively, wherein the analysis and processing module includes a host computer, and the analysis and processing module is used to analyze and process the flue gas concentration and flue gas color in the carbonization furnace; the analysis and processing module is electrically connected to the alarm module, and the alarm module is used to execute corresponding alarm actions according to the analysis and processing results of the analysis and processing module. Among them, the alarm module can be, for example, an alarm light, and different alarm actions can be different light colors emitted by the alarm light. The alarm module can also be a buzzer, and different alarm actions can be different buzzing sounds. Of course, the two can also be used at the same time.

[0050] For example, in the production of carbon fiber, the pre-oxidized filament undergoes pyrolysis and polycondensation during the low-temperature carbonization process, producing a large amount of by-product flue gas and tar. When the solid fiber is converted into gaseous flue gas, the volume increases many times, and the space in the furnace is filled with it, which seriously pollutes the running fiber and needs to be discharged out of the furnace instantly, otherwise it will seriously pollute the fiber and affect continuous and stable production. Therefore, the flue gas color of the carbonization furnace is first detected by the flue gas color recognition module, where the flue gas is mainly divided into three types: yellow smoke, blue smoke, and smokeless. Yellow smoke is easy to produce white gray silk; blue smoke is the normal flue gas color. The flue gas color recognition module transmits the detection result to the analysis and processing module, and the analysis and processing module performs analysis and processing. When the flue gas color is yellow, the analysis and processing module controls the alarm module to perform the corresponding alarm action. When the flue gas color is non-yellow, it is necessary to detect the flue gas content in the low-temperature carbonization furnace. When the flue gas content is high, the carbon fiber performance will be affected due to poor waste discharge; when there is no smoke, the carbon fiber performance will be affected due to the evacuation of oxygen into the low-temperature carbonization furnace. Since the concept of flue gas content is vague, concentration is chosen instead of flue gas volume to improve the accuracy of judgment. The flue gas concentration of the carbonization furnace is detected by the flue gas concentration detection module, and the flue gas concentration identification module transmits the detection results to the analysis and processing module, which performs analysis and processing. When the flue gas concentration exceeds the upper limit or lower limit, the analysis and processing module controls the alarm module to perform the corresponding alarm action. In this way, the real-time detection and analysis of the color and concentration of the flue gas in the carbonization furnace improves the intelligence level of the production process. Through the linkage with the alarm module, rapid response and processing of abnormal situations are achieved, further improving the automation and intelligence of the production line, reducing energy consumption and production costs, and reducing the burden on operators and improving management efficiency through automated detection and alarm modules. At the same time, it also helps to achieve remote monitoring and intelligent management.

[0051] In some embodiments of the present invention, the smoke color recognition module includes an RGB smoke color recognition sensor; the smoke concentration detection module includes a smoke concentration detection sensor; the alarm module includes an alarm light, and the alarm module is used to display different lights according to the analysis and processing results. Exemplarily, the alarm lights may include three, respectively displaying yellow light, red light and green light. When the smoke color is detected to be yellow, the alarm light of the yellow light is on; when the smoke concentration is detected to be less than the lower limit, the alarm light of the red light is on; when the smoke concentration is detected to be greater than the upper limit, the alarm light of the green light is on. The RGB smoke color recognition sensor can accurately capture the color change of the smoke in the carbonization furnace, and by analyzing the combination of red, green and blue colors, the color type of the smoke can be accurately determined, such as yellow smoke, blue smoke, etc. Then, the smoke concentration in the carbonization furnace is further detected in real time by the smoke concentration detection sensor, providing accurate data support, ensuring that the operator can understand the furnace status in time, and the operator can make timely processing according to the different color lights of different alarm lights, thereby improving production efficiency and safety.

[0052] In some embodiments of the present invention, the smoke detection device further includes an abnormal alarm module; the input end of the abnormal alarm module is connected to the output end of the analysis and processing module, and the output end of the abnormal alarm module is connected to the input end of the alarm light; when the smoke color and / or smoke concentration exceeds the preset value, the analysis and processing module controls the alarm light to display different lights through the abnormal alarm module. In this way, when the smoke parameters exceed the preset value, the abnormal alarm module can respond quickly and issue an alarm by controlling the alarm light to display different lights. The mechanism of real-time detection and timely response enhances the reliability and ease of use of the system by converting the output signal of the analysis and processing module into an intuitive light indication.

[0053] In some embodiments of the present invention, the abnormal alarm module includes a color abnormal switch, a concentration upper limit switch, a concentration lower limit switch and a distributed control system; the color abnormal switch, the concentration upper limit switch and the concentration lower limit switch are all electrically connected to the analysis and processing module, and the output ends of the color abnormal switch, the concentration upper limit switch and the concentration lower limit switch are respectively connected to the distributed control system, and the output end of the distributed control system is electrically connected to the alarm module. Exemplarily, when the color of the flue gas is detected to be yellow, the analysis and processing module passes the signal to the color abnormal switch, and after the color abnormal switch is turned on, the distributed control system will start the yellow light alarm light to light up; when the color of the flue gas is detected to be non-yellow, the analysis and processing module will control the flue gas concentration detection module to detect the flue gas concentration in the carbonization furnace, and when the flue gas concentration in the carbonization furnace is detected to be less than the lower limit value of the concentration, the analysis and processing module passes the signal to the concentration lower limit switch, and after the concentration lower limit switch is turned on, the distributed control system will start the red light alarm light to light up; when the flue gas concentration in the carbonization furnace is detected to be greater than the upper limit value, the analysis and processing module passes the signal to the concentration upper limit switch, and after the concentration upper limit switch is turned on, the distributed control system will start the green light alarm light to light up. In this way, the color abnormality switch, concentration upper limit switch and concentration lower limit switch are responsible for different types of alarm situations, making the alarm system more flexible and able to cope with a variety of flue gas abnormalities. The distributed control system can receive signals from each switch and control the lighting of the alarm light according to preset logical rules, thereby improving the reliability and stability of the system.

[0054] An exemplary embodiment of the present invention further provides a method for detecting smoke in a carbonization furnace, which is applied to the device described in any one of the above embodiments, such as Figure 1 and Figure 2 As shown, the following steps are included:

[0055] Step S1. Detect the color of flue gas in the carbonization furnace and obtain a first detection result.

[0056] The RGB flue gas color recognition sensor is installed at the exhaust pipe of the carbonization furnace, and the color of the flue gas in the carbonization furnace is detected by the RGB flue gas color recognition sensor to obtain a first detection result.

[0057] Step S2: Analyze and process the first detection result, and if the first detection result meets the first alarm condition, control the alarm module to execute the first alarm action.

[0058] The first detection result obtained by the RGB flue gas color recognition sensor is transmitted to the analysis and processing module, which performs analysis and processing. If the flue gas color is yellow, the analysis and processing module controls the color abnormality switch to turn on. After the color abnormality switch is turned on, the distributed control system controls the alarm module to perform a first alarm action, wherein the first alarm action includes the alarm light turning on a yellow light.

[0059] Step S3: If the first detection result does not meet the first alarm condition, the smoke concentration in the carbonization furnace is detected to obtain a second detection result.

[0060] If the analysis and processing module analyzes that the color of the flue gas is not yellow, the flue gas concentration detection sensor is controlled to detect the flue gas concentration in the carbonization furnace to obtain a second detection result.

[0061] Step S4: Analyze and process the second detection result. If the second detection result meets the second alarm condition, control the alarm module to execute the second alarm action.

[0062] The second detection result obtained by the flue gas concentration detection sensor is transmitted to the analysis and processing module, and the analysis and processing module performs analysis and processing. If the flue gas concentration is less than the lower limit value of the concentration, the analysis and processing module controls the lower limit switch of the concentration to turn on. After the lower limit switch of the concentration is turned on, the distributed control system alarm module executes the second alarm action, wherein the second alarm action includes the alarm light turning on the red light.

[0063] Step S5. If the second detection result does not meet the second alarm condition, determine whether the second detection result meets the third alarm condition. If the second detection result meets the third alarm condition, control the alarm module to perform the third alarm action. If the second detection result does not meet the third alarm condition, re-detect the color of the flue gas in the carbonization furnace.

[0064] If the analysis and processing module analyzes that the flue gas concentration is higher than the upper concentration limit, it determines whether the flue gas concentration is higher than the lower concentration limit. If the flue gas concentration is higher than the upper concentration limit, the analysis and processing module controls the upper concentration limit switch to turn on. After the upper concentration limit switch is turned on, the distributed control system alarm module performs the third alarm action, wherein the third alarm action includes the alarm light turning on green. If the flue gas concentration is higher than the lower concentration limit and lower than the upper concentration limit, the color of the flue gas in the carbonization furnace is re-detected.

[0065] In some embodiments of the present invention, the first detection result includes an RGB value of the flue gas in the carbonization furnace, and the alarm module includes an alarm light.

[0066] The steps of step S2 specifically include:

[0067] Step S201: Obtain the RGB value of the flue gas in the carbonization furnace.

[0068] The RGB value is a value used to describe the intensity of the three channels of red (Red), green (Green), and blue (Blue).

[0069] Step S202: convert the acquired RGB value of the smoke into an electrical signal and transmit it to the analysis and processing module, which determines whether the RGB value of the smoke meets the preset range value. If so, the analysis and processing module sends a first switch signal to the color abnormality switch, so that the color abnormality switch controls the alarm light to display the first color.

[0070] The acquired RGB value of the flue gas is transmitted to the analysis and processing module, wherein the analysis and processing module includes image processing software and selects an appropriate color model (such as RGB, HSV, etc.) to analyze the color of the flue gas, which can significantly improve the accuracy of color recognition. Once the analysis and processing module determines that the RGB value of the flue gas exceeds the preset range, it can quickly send a signal to the color abnormality switch to trigger the alarm mechanism, thereby achieving a rapid response to the abnormal color of the flue gas and reducing labor and time costs.

[0071] In some embodiments of the present invention, the step of the analysis and processing module determining whether the RGB value of the flue gas meets the preset range value specifically includes: if the R value of the flue gas in the carbonization furnace is between 200 and 255, the G value is between 98 and 255, and the B value is equal to 0, then the alarm light is controlled to display the first color. When the RGB value of the flue gas meets specific conditions, the alarm light can immediately light up the first color, providing an intuitive visual warning for the operator, and the automated detection and alarm module can reduce the burden on the operator, improve management efficiency, and also help to achieve remote monitoring and intelligent management.

[0072] In some embodiments of the present invention, the steps of step S3 specifically include:

[0073] Determine whether the R value of the flue gas in the carbonization furnace is less than 200 or greater than 255. If yes, detect the flue gas concentration in the carbonization furnace to obtain the second detection result. If not, determine whether the G value is less than 98 or greater than 255. If yes, detect the flue gas concentration in the carbonization furnace to obtain the second detection result. If not, determine whether the B value is a non-zero value. If yes, detect the flue gas concentration in the carbonization furnace to obtain the second detection result. By setting the thresholds of the R value, G value and B value, a preliminary judgment of the flue gas color can be achieved. When the flue gas color is abnormal (such as the R value is less than 200 or greater than 255, or the G value is less than 98 or greater than 255, or the B value is a non-zero value, etc.), the system can immediately trigger the subsequent detection steps, that is, to detect the flue gas concentration, which can avoid unnecessary detection steps, thereby improving the detection efficiency, especially when the flue gas color is normal, no additional concentration detection is required, which helps save time and resources. In addition, the thresholds of the R, G, and B values ​​can be adjusted according to actual needs to adapt to the changes in flue gas color under different carbonization furnaces and combustion conditions, enhancing the flexibility and adaptability of the system so that it can better meet the detection needs in different scenarios.

[0074] In some embodiments of the present invention, the second detection result includes the concentration value of the flue gas in the carbonization furnace. The steps of step S4 specifically include:

[0075] Step S401: Obtain the concentration value of the flue gas in the carbonization furnace.

[0076] Step S402. Convert the acquired concentration value into an electrical signal and transmit it to the analysis and processing module. The analysis and processing module determines whether the concentration value is less than the lower limit of the flue gas concentration. If so, the analysis and processing module sends a second switch signal to the lower limit switch of the concentration so that the lower limit switch of the concentration controls the alarm light to display the second color.

[0077] By acquiring the concentration value of the flue gas in the carbonization furnace in real time, the system can detect changes in the flue gas concentration in a timely manner. When the flue gas concentration value is detected to be lower than the preset flue gas concentration lower limit, the analysis and processing module can quickly send a signal to the concentration lower limit switch to trigger the alarm mechanism, thereby achieving a timely response to abnormal flue gas concentration.

[0078] In some embodiments of the present invention, the steps of step S5 specifically include:

[0079] Step S501: Convert the acquired concentration value into an electrical signal and transmit it to the analysis and processing module. The analysis and processing module determines whether the concentration value is greater than or equal to the lower limit of the smoke concentration. If so, the analysis and processing module compares the concentration value with the upper limit of the smoke concentration.

[0080] Step S502: When the concentration value is greater than the upper limit value of the smoke concentration, the analysis and processing module sends a third switch signal to the upper limit concentration switch, so that the upper limit concentration switch controls the alarm light to display a third color.

[0081] Step S503: When the concentration value is less than or equal to the upper limit of the flue gas concentration, the analysis and processing module controls the flue gas color recognition module to re-detect the color of the flue gas in the carbonization furnace.

[0082] By converting the concentration value into an electrical signal and transmitting it to the analysis and processing module, the system can accurately detect the concentration change of the flue gas in the carbonization furnace. When the concentration value exceeds the preset lower limit of the flue gas concentration, the system can quickly make further judgments and immediately trigger the alarm mechanism when the concentration value exceeds the upper limit of the flue gas concentration, so as to achieve a timely response to the abnormal flue gas concentration. When the concentration value of the flue gas in the carbonization furnace is between the upper limit of the flue gas concentration and the lower limit of the flue gas concentration, the recognition and processing module will not immediately trigger the alarm, but control the flue gas color recognition module to re-detect the flue gas color. It helps to avoid unnecessary alarms and waste of resources, while ensuring that more comprehensive flue gas information can be obtained when necessary. By detecting and analyzing the flue gas concentration data and combining the results of the re-detection of the flue gas color, the real-time detection of the state in the low-temperature carbonization furnace and the alarm of abnormal state can be realized, the timeliness of the abnormal situation processing of the production line can be improved, and the production loss caused by the abnormal exhaust gas in the low-temperature carbonization furnace can be effectively reduced; at the same time, the current mode of artificial regular inspection of the state in the low-temperature carbonization furnace is changed, and the degree of automation of carbon fiber production is effectively improved.

[0083] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smoke detection device in a carbonization furnace, characterized in that: include: A flue gas color recognition module, used to recognize the color of flue gas in the carbonization furnace, wherein the flue gas color recognition module is installed at the exhaust pipe of the carbonization furnace; A smoke concentration detection module, used to detect the smoke concentration in the carbonization furnace, wherein the smoke concentration detection module is installed at the exhaust pipe of the carbonization furnace; An analysis and processing module, the smoke color recognition module and the smoke concentration detection module are electrically connected to the analysis and processing module respectively, and the analysis and processing module is used to analyze and process the smoke concentration and smoke color in the carbonization furnace; An alarm module, the analysis and processing module is electrically connected to the alarm module, and the alarm module is used to execute a corresponding alarm action according to the analysis and processing result of the analysis and processing module.

2. The smoke detection device in the carbonization furnace according to claim 1, characterized in that: The smoke color recognition module includes an RGB smoke color recognition sensor; The smoke concentration detection module includes a smoke concentration detection sensor; The alarm module includes an alarm light, and the alarm module is used to display different lights according to the analysis and processing results.

3. The smoke detection device in the carbonization furnace according to claim 1, characterized in that: The smoke detection device also includes an abnormal alarm module; The input end of the abnormal alarm module is connected to the output end of the analysis and processing module, and the output end of the abnormal alarm module is connected to the input end of the alarm light; When the smoke color and / or the smoke concentration exceeds a preset value, the analysis and processing module controls the alarm light to display different lights through the abnormal alarm module.

4. The smoke detection device in the carbonization furnace according to claim 3, characterized in that: The abnormal alarm module includes a color abnormality switch, a concentration upper limit switch, a concentration lower limit switch and a distributed control system; The color abnormality switch, the concentration upper limit switch and the concentration lower limit switch are all electrically connected to the analysis and processing module, the output ends of the color abnormality switch, the concentration upper limit switch and the concentration lower limit switch are respectively connected to the distributed control system, and the output end of the distributed control system is electrically connected to the alarm module.

5. A method for detecting smoke in a carbonization furnace, applied to the device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Detect the color of flue gas in the carbonization furnace and obtain a first detection result; Analyze and process the first detection result, and if the first detection result meets a first alarm condition, control the alarm module to execute a first alarm action; If the first detection result does not meet the first alarm condition, detecting the flue gas concentration in the carbonization furnace to obtain a second detection result; Analyzing and processing the second detection result, and if the second detection result meets a second alarm condition, controlling the alarm module to execute a second alarm action; If the second detection result does not meet the second alarm condition, determine whether the second detection result meets the third alarm condition. If the second detection result meets the third alarm condition, control the alarm module to perform the third alarm action. If the second detection result does not meet the third alarm condition, re-detect the color of the flue gas in the carbonization furnace.

6. The method for detecting smoke in a carbonization furnace according to claim 5, characterized in that: The first detection result includes the RGB value of the flue gas in the carbonization furnace, and the alarm module includes an alarm light; The step of analyzing and processing the first detection result and controlling the alarm module to execute the first alarm action if the first detection result meets the first alarm condition specifically includes: Obtaining the RGB value of the flue gas in the carbonization furnace; The acquired RGB value of the flue gas is converted into an electrical signal and transmitted to an analysis and processing module, and the analysis and processing module determines whether the RGB value of the flue gas meets a preset range value. If so, the analysis and processing module sends a first switch signal to the color abnormality switch, so that the color abnormality switch controls the alarm light to display a first color.

7. The method for detecting smoke in a carbonization furnace according to claim 6, characterized in that: The step of the analysis and processing module determining whether the RGB value of the smoke meets the preset range value specifically includes: If the R value of the flue gas in the carbonization furnace is between 200 and 255, the G value is between 98 and 255, and the B value is equal to 0, the alarm light is controlled to display the first color.

8. The method for detecting smoke in a carbonization furnace according to claim 7, characterized in that: If the first detection result does not meet the first alarm condition, the fume concentration in the carbonization furnace is detected, and the step of obtaining the second detection result specifically includes: Determine whether the R value of the flue gas in the carbonization furnace is less than 200 or the R value is greater than 255. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result. If not, determine whether the G value is less than 98 or the G value is greater than 255. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result. If not, determine whether the B value is a non-zero value. If so, detect the flue gas concentration in the carbonization furnace to obtain a second detection result.

9. The method for detecting smoke in a carbonization furnace according to claim 6, characterized in that: The second detection result includes a concentration value of the flue gas in the carbonization furnace; The step of analyzing and processing the second detection result, and if the second detection result meets the second alarm condition, controlling the alarm module to execute the second alarm action specifically includes: Obtaining a concentration value of the flue gas in the carbonization furnace; The acquired concentration value is converted into an electrical signal and transmitted to the analysis and processing module, and the analysis and processing module determines whether the concentration value is less than the lower limit value of the flue gas concentration. If so, the analysis and processing module sends a second switch signal to the lower limit switch of the concentration, so that the lower limit switch of the concentration controls the alarm light to display a second color.

10. The method for detecting smoke in a carbonization furnace according to claim 9, characterized in that: If the second detection does not meet the second alarm condition, determining whether the second detection result meets the third alarm condition; if the second detection result meets the third alarm condition, controlling the alarm module to perform the third alarm action; if the second detection result does not meet the third alarm condition, re-detecting the color of the flue gas in the carbonization furnace specifically includes: The acquired concentration value is converted into an electrical signal and transmitted to an analysis and processing module, and the analysis and processing module determines whether the concentration value is greater than or equal to the lower limit of the smoke concentration. If so, the analysis and processing module compares the concentration value with the upper limit of the smoke concentration; When the concentration value is greater than the upper limit value of the smoke concentration, the analysis and processing module sends a third switch signal to the upper limit switch of the concentration, so that the upper limit switch of the concentration controls the warning light to display a third color; When the concentration value is less than or equal to the upper limit of the flue gas concentration, the analysis and processing module controls the flue gas color recognition module to re-detect the color of the flue gas in the carbonization furnace.

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