A furnace mouth flame analysis system with early warning function and method thereof

Abstract

The present invention discloses a furnace mouth flame analysis system with early warning function and a method thereof, which belongs to the field of flame analysis technology, and includes a central control module, a flame analysis module, a cleaning and emission module, a splash processing module, a central control module and an alarm module, wherein the central control module is connected to the flame analysis module, the cleaning and emission module, the splash processing module and the alarm module. In the above manner, the present invention collects flames through a camera, and can process smoke that blocks the flames. By analyzing the flame image, the type of splashing in the furnace can be determined, and different processing methods can be given according to different splashing types, thereby achieving the effectiveness and pertinence of splashing processing.

Description

Technical Field

[0001] The invention relates to the technical field of flame analysis, and in particular to a furnace mouth flame analysis system with early warning function and a method thereof. Background Art

[0002] The converter is a steelmaking equipment with a cylindrical furnace body that can rotate on a horizontal axis frame. The main function of the converter is to oxidize impurities in liquid metal by blowing in air, pure oxygen, or pure oxygen plus fuel oil (such as natural gas, water vapor, carbon dioxide) and generate the required heat energy. The converter can be tilted to better control the smelting process; and the flame analysis inside the converter refers to evaluating the status and problems of the smelting process in the furnace by analyzing the color, shape and dynamic changes of the flame at the furnace mouth. The flame analysis at the furnace mouth is particularly important in the converter steelmaking process because it can help operators judge the reaction of the molten steel in the furnace, so as to dynamically adjust the oxygen gun position and the addition of slag to ensure the smooth progress of the smelting process.

[0003] For example, Chinese patent CN117173141A discloses a smelting observation system based on flame image features, including a video acquisition module, a video processing module, a flame image feature extraction module, an automatic exposure module, an image recognition algorithm module, an image analysis algorithm module and a data analysis module. The video acquisition module uses an ordinary color camera to acquire the original furnace mouth flame video; the video processing module performs image processing on the acquired furnace mouth flame video, and uses a convolutional neural network to remove smoke from the color image to obtain a clear flame image; the flame image feature extraction module obtains the current furnace mouth flame features, including the color features and shape features of the flame.

[0004] However, the technology has the following problems: the above technology removes the smoke generated by the flame through an algorithm, which has certain errors and cannot guarantee the accuracy of flame detection;

[0005] It is not possible to carry out corresponding splash countermeasures according to the splash type in the furnace, and even if splash countermeasures can be carried out, it is also impossible to judge the effectiveness of the splash countermeasures.

[0006] Based on this, the present invention designs a furnace mouth flame analysis system with early warning function and a method thereof to solve the above problems. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a furnace mouth flame analysis system and method with early warning function.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A furnace mouth flame analysis system with an early warning function, comprising a central control module, a flame analysis module, a cleaning and emission module, a splash processing module, a central control module and an alarm module, wherein the central control module is connected to the flame analysis module, the cleaning and emission module, the splash processing module and the alarm module;

[0010] The flame analysis module is used to collect and analyze flame image information to determine whether smoke covering the flame and splashing occur;

[0011] The flame analysis module includes a camera, an image judgment unit, an image analysis unit, a video analysis unit and a type judgment unit;

[0012] A camera is used to collect flame image information and upload it to the image judgment unit, and the camera is communicatively connected with the image judgment unit;

[0013] An image judgment unit, used to receive flame image information and judge whether smoke covers the flame, the image judgment unit is in communication connection with the central control module and the image analysis unit;

[0014] If the smoke covers the flame, the image information of the smoke covering the flame is uploaded to the central control module, and the central control module controls the cleaning and emission module to process the smoke until the image judgment unit determines that the smoke does not cover the flame, and the central control module controls the cleaning and emission module to stop;

[0015] If the smoke does not obscure the flame, the flame image information is uploaded to the image analysis unit;

[0016] An image analysis unit, used to receive flame image information and determine whether splashing occurs, the image analysis unit is in communication connection with the central control module and the frequency determination unit;

[0017] If no splashing occurs, the image analysis unit outputs real-time flame detection information to the central control module;

[0018] If splashing occurs, the image analysis unit uploads splashing video information containing the splashing image to the number determination unit;

[0019] A frequency determination unit is used to receive the splashing video information and determine whether the number of receptions is greater than 1, and the frequency determination unit is communicatively connected with the splashing comparison unit and the video analysis unit;

[0020] If the number of receptions is greater than 1, the number determination unit uploads the splash video information to the splash comparison unit;

[0021] If the number of receptions is 1, the number determination unit uploads the splash video information to the video analysis unit;

[0022] The splash comparison unit is used to receive the splash video information of this time and the splash video information of the previous time uploaded by the number judgment unit, and extract the splash time length t1 of this time and the splash time length t1 of the previous time. -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between:

[0023] If (t1 / t -1 )×100%≤50%, the splash comparison unit determines that the splash is being suppressed and uploads the splash video information to the video analysis unit;

[0024] If (t1 / t -1 )×100%>50%, the splash comparison unit determines that the system's processing method is invalid, and the splash comparison unit uploads the splash situation to the central control module, which then notifies the technicians to go to the site for processing through the alarm module;

[0025] A video analysis unit is used to receive splash video information, extract effective video information, and then determine whether a large splash phenomenon occurs. The video analysis unit is in communication connection with the central control module and the type determination unit;

[0026] If a small splash occurs, the video analysis unit outputs the data information of the small splash to the central control module, and the central control module controls the splash processing module to control the furnace;

[0027] If a large splash phenomenon occurs, the video analysis unit outputs the video information of the large splash to the type judgment unit;

[0028] A type determination unit receives video information of large splashes and determines the type of splashes in the furnace, and the type determination unit is in communication connection with the central control module;

[0029] A splash processing module, used to receive command information from the central control module and process different splash phenomena occurring inside the converter;

[0030] The cleaning and emission module is used to receive control information from the central control module, absorb and filter the smoke that covers the flame inside the converter, and realize the circulation of the gas in the furnace;

[0031] The alarm module, when splashing occurs inside the converter, after the splashing treatment module treats the converter, if the camera detects that the splashing continues to occur and does not decrease, the central control module will notify the technician to go to the site for processing through the alarm module.

[0032] Furthermore, the effective information is the splashing time length t1 and the splashing brightness s1.

[0033] Furthermore, the method for the video analysis unit to determine whether a large splash occurs is as follows: the video analysis unit is provided with a splash time length threshold t and a splash brightness threshold s;

[0034] If t1 ≥ t, it is a large splash;

[0035] If t1<t, and if s1<s within the splashing time length t1, the video analysis unit determines that it is a small splash;

[0036] If s1≥s exists within the splashing time length t1, the video analysis unit first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ;

[0037] The video analysis unit then determines t s The relationship with t1:

[0038] like Then the video analysis unit determines it as a large splash;

[0039] like Then the video analysis unit determines it as a small splash;

[0040] Furthermore, the cleaning and emission module includes an air pump, a cooler, a filter device, a gas storage tank, a fan, a gas purification device, valve one, valve two and a CO detector. The CO detector is fixedly installed inside the converter. One end of the air pump is connected to the converter, and the other end of the air pump is connected to one end of a plurality of capillary tubes. The capillary tubes are installed inside the cooler, and the other end of the capillary tubes is connected to a first end of the filter device. The second end of the filter device is connected to one end of valve one, and the other end of valve one is connected to the gas purification device. The third end of the filter device is connected to one end of valve two, and the other end of valve two is connected to the air inlet of the gas storage tank. The air outlet of the gas storage tank is connected to one end of the fan, and the other end of the fan is connected to the converter.

[0041] Furthermore, the air pump, the cooler, the valve one, the valve two, the fan, and the CO detector are all electrically connected to the central control module.

[0042] Furthermore, both valve one and valve two are solenoid valves.

[0043] Furthermore, the splash types include explosive splash and other splash;

[0044] The type judgment unit judges the splash type in the following way: first, the CO detector detects the CO content Z in the furnace. If Z≥X, where X is the CO content limit threshold, the type judgment unit judges it as explosive splash;

[0045] If Z<X, the type judgment unit judges it as other splashing.

[0046] Furthermore, the splash treatment module includes an oxygen lance, an oxygen lance lifting device and a limestone dosing unit;

[0047] Oxygen lance, used to add oxygen into the converter, the oxygen lance is fixedly installed on the output end of the oxygen lance lifting device;

[0048] Oxygen lance lifting device, used to control the height adjustment of the oxygen lance;

[0049] The limestone dosing unit is used to cool the molten pool, thicken the slag, and suppress splashing. The limestone dosing unit is fixedly installed above the converter;

[0050] The oxygen lance, the oxygen lance lifting device and the limestone dosing unit are all electrically connected to the central control module.

[0051] Furthermore, when a small splashing phenomenon occurs inside the converter, the limestone dosing unit adds appropriate limestone into the converter;

[0052] When the type judgment unit judges that explosive splashing occurs inside the converter, the oxygen lance lifting device lowers the position of the oxygen lance, and the limestone dosing unit adds appropriate limestone into the converter;

[0053] When the type judgment unit judges that other splashing phenomena occur inside the converter, the oxygen lance lifting device raises the position of the oxygen lance, and the limestone dosing unit adds appropriate limestone into the converter.

[0054] In order to better achieve the purpose of the present invention, the present invention also provides a method for analyzing furnace mouth flame with early warning function, comprising the following steps:

[0055] Step 1: The camera collects flame image information and uploads it to the image judgment unit, which determines whether the smoke covers the flame;

[0056] If the flue gas covers the flame, the central control module controls the air pump to start, and absorbs the flue gas inside the converter into the capillary tube. Since the capillary tube is located in the cooler, the cooler cools the capillary tube and thus cools the flue gas inside the capillary tube. The cooled flue gas enters the filter device for filtration, and then the valve 2 is opened, the flue gas enters the gas storage tank, the fan is turned on, and the flue gas in the gas storage tank is pumped into the converter until the image judgment unit determines that the flue gas does not cover the flame, and the CO detector detects that the CO content in the converter is balanced, then the fan is turned off;

[0057] If the smoke does not cover the flame, the image judgment unit uploads the flame image information to the image analysis unit;

[0058] Step 2: The image analysis unit receives the flame image information and determines whether splashing occurs. If splashing does not occur, the image analysis unit outputs flame real-time detection information to the central control module;

[0059] If splashing occurs, the image analysis unit uploads splashing video information containing the splashing image to the number determination unit;

[0060] Step 3: The frequency determination unit receives the splashing video information and determines whether the number of receptions is greater than 1. If so, step 4 is executed; if not, step 5 is executed;

[0061] Step 4: The number determination unit uploads the splashing video information to the splashing comparison unit;

[0062] The splash comparison unit receives the splash video information of this time and the splash video information of the last time uploaded by the number judgment unit, and extracts the splash time length t1 of this time and the splash time length t of the last time. -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between:

[0063] If (t1 / t -1 )×100%≤50%, the splash comparison unit determines that the splash is being suppressed and uploads the splash video information to the video analysis unit;

[0064] If (t1 / t -1 )×100%>50%, the splash comparison unit determines that the system's processing method is invalid, and the splash comparison unit uploads the splash situation to the central control module, which then notifies the technicians to go to the site for processing through the alarm module;

[0065] Step 5: The number determination unit uploads the splashing video information to the video analysis unit;

[0066] The video analysis unit receives the splashing video information, extracts the splashing time length t1 and the splashing brightness s1, and then determines whether a large splashing phenomenon occurs;

[0067] The method for the video analysis unit to determine the occurrence of large splashing is as follows: the video analysis unit is provided with a splashing time length threshold t and a splashing brightness threshold s;

[0068] If t1 ≥ t, it is a large splash;

[0069] If t1<t, and if s1<s within the splashing time length t1, the video analysis unit determines that it is a small splash;

[0070] If s1≥s exists within the splashing time length t1, the video analysis unit first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ;

[0071] The video analysis unit then determines ts The relationship with t1:

[0072] like Then the video analysis unit determines it as a large splash;

[0073] like Then the video analysis unit determines it as a small splash;

[0074] If a small splash occurs, the video analysis unit outputs the data information of the small splash to the central control module, and the central control module controls the splash processing module to control the furnace;

[0075] If a large splash phenomenon occurs, the video analysis unit outputs the video information of the large splash to the type judgment unit;

[0076] Step 6: The type determination unit receives the video information of the large splash and determines whether the splash type in the furnace is an explosive splash or other splash;

[0077] The type judgment unit judges the splash type in the following way: first, the CO detector detects the CO content Z in the furnace. If Z≥X, where X is the CO content limit threshold, the type judgment unit judges it as explosive splash;

[0078] If Z<X, the type judgment unit judges it as other splash;

[0079] Step 7: The oxygen lance, oxygen lance lifting device and limestone dosing unit are used to receive command information from the central control module and process different splashing phenomena occurring inside the converter;

[0080] The treatment method is: when a small splash occurs inside the converter, the limestone dosing unit adds appropriate limestone into the converter;

[0081] When the type judgment unit judges that explosive splashing occurs inside the converter, the oxygen lance lifting device lowers the position of the oxygen lance, and the limestone dosing unit adds appropriate limestone into the converter;

[0082] When the type judgment unit judges that other splashing phenomena occur inside the converter, the oxygen lance lifting device raises the position of the oxygen lance, and the limestone dosing unit adds appropriate limestone into the converter;

[0083] After the oxygen lance, oxygen lance lifting device and limestone dosing unit process the splashing phenomenon, the camera collects image information in real time and repeats steps one, two and three.

[0084] Compared with the prior art, the present invention has the following beneficial effects: the present invention collects flames through a camera and can process smoke that blocks the flames. By analyzing the flame image, the type of splashing in the furnace can be determined, and different processing methods can be given according to different splashing types, thereby achieving the effectiveness and pertinence of splashing processing;

[0085] The present invention verifies the effectiveness of the splashing treatment by judging the treatment phenomenon after the splashing treatment, and treats the splashing phenomenon multiple times under the premise of effectiveness until the splashing disappears. If the treatment of the splashing is ineffective, an alarm is immediately issued through the alarm module to notify technicians to come to the site to investigate the situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0087] Figure 1 It is a flow chart of a furnace mouth flame analysis system with early warning function of the present invention;

[0088] Figure 2 A connection block diagram of a furnace mouth flame analysis system with an early warning function according to the present invention;

[0089] Figure 3 It is a connection block diagram of the flame analysis module and the central control module of the present invention;

[0090] Figure 4 A connection block diagram of the cleaning and discharge module of the present invention;

[0091] Figure 5 It is a schematic block diagram of the splash processing module of the present invention.

[0092] The numbers in the figure represent:

[0093] 1. Flame analysis module; 11. Camera; 12. Image judgment unit; 13. Image analysis unit; 14. Video analysis unit; 15. Type judgment unit; 16. Number judgment unit; 17. Splash comparison unit; 2. Cleaning and emission module; 21. Air pump; 22. Cooler; 23. Filter device; 24. Gas storage tank; 25. Fan; 26. Gas purification device; 27. Valve 1; 28. Valve 2; 29. ​​CO detector; 3. Splash treatment module; 31. Oxygen gun; 32. Oxygen gun lifting device; 33. Limestone dosing unit; 4. Central control module; 5. Alarm module. DETAILED DESCRIPTION

[0094] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0095] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 5 , a furnace mouth flame analysis system with early warning function, comprising a central control module 4, a flame analysis module 1, a cleaning and emission module 2, a splash processing module 3, a central control module 4 and an alarm module 5, wherein the central control module 4 is connected to the flame analysis module 1, the cleaning and emission module 2, the splash processing module 3 and the alarm module 5;

[0096] The flame analysis module 1 is used to collect and analyze flame image information to determine whether smoke covering the flame and splashing occur;

[0097] The flame analysis module 1 includes a camera 11, an image judgment unit 12, an image analysis unit 13, a video analysis unit 14 and a type judgment unit 15;

[0098] The camera 11 is used to collect flame image information and upload it to the image judgment unit 12. The camera 11 is in communication connection with the image judgment unit 12.

[0099] The image judging unit 12 is used to receive flame image information and judge whether smoke covers the flame. The image judging unit 12 is in communication connection with the central control module 4 and the image analyzing unit 13;

[0100] If the smoke covers the flame, the image information of the smoke covering the flame is uploaded to the central control module 4, and the central control module 4 controls the cleaning and emission module 2 to process the smoke until the image judgment unit 12 determines that the smoke does not cover the flame, and the central control module 4 controls the cleaning and emission module 2 to stop;

[0101] If the smoke does not cover the flame, the flame image information is uploaded to the image analysis unit 13;

[0102] The image analysis unit 13 is used to receive flame image information and determine whether splashing occurs. The image analysis unit 13 is in communication with the central control module 4 and the frequency determination unit 16;

[0103] If no splashing occurs, the image analysis unit 13 outputs flame real-time detection information to the central control module 4;

[0104] If splashing occurs, the image analysis unit 13 uploads splashing video information containing splashing images to the number determination unit 16;

[0105] The number determination unit 16 is used to receive the splashing video information and determine whether the number of receptions is greater than 1. The number determination unit 16 is in communication with the splashing comparison unit 17 and the video analysis unit 14;

[0106] If the number of receptions is greater than 1, the number determination unit 16 uploads the splash video information to the splash comparison unit 17;

[0107] If the number of receptions is 1, the number determination unit 16 uploads the splash video information to the video analysis unit 14;

[0108] The splash comparison unit 17 is used to receive the splash video information of this time and the splash video information of the previous time uploaded by the number judgment unit 16, and extract the splash time length t1 of this time and the splash time length t -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between:

[0109] If (t1 / t -1 )×100%≤50%, the splash comparison unit 17 determines that the splash is being suppressed, and uploads the splash video information to the video analysis unit 14;

[0110] If (t1 / t -1 )×100%>50%, the splash comparison unit 17 determines that the system's processing method is invalid, and the splash comparison unit 17 uploads the splash situation to the central control module 4, and the central control module 4 notifies the technicians to go to the site for processing through the alarm module 5;

[0111] The video analysis unit 14 is used to receive the splashing video information, extract the effective information of the video, and then determine whether a large splashing phenomenon occurs. The video analysis unit 14 is in communication connection with the central control module 4 and the type determination unit 15;

[0112] Preferably, the effective information is the splashing time length t1 and the splashing brightness s1.

[0113] Preferably, the method for the video analysis unit 14 to determine whether a large splash occurs is as follows: the video analysis unit 14 is provided with a splash time length threshold t and a splash brightness threshold s;

[0114] If t1 ≥ t, it is a large splash;

[0115] If t1<t, and if s1<s within the splashing time length t1, the video analysis unit 14 determines that it is a small splash;

[0116] If s1≥s exists within the splashing time length t1, the video analysis unit 14 first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ;

[0117] The video analysis unit 14 then determines t s The relationship with t1:

[0118] like Then the video analysis unit 14 determines it as a large splash;

[0119] like Then the video analysis unit 14 determines it as a small splash;

[0120] Preferably, if the video analysis unit 14 detects splashing three times or more at the same position L, the position L is determined to be a fault point.

[0121] If a small splash occurs, the video analysis unit 14 outputs the data information of the small splash to the central control module 4, and the central control module 4 controls the splash processing module 3 to perform furnace control;

[0122] If a large splash phenomenon occurs, the video analysis unit 14 outputs the video information of the large splash to the type determination unit 15;

[0123] A type determination unit 15 receives video information of large splashes and determines the type of splashes in the furnace, and the type determination unit 15 is in communication connection with the central control module 4;

[0124] Preferably, the splash types include explosive splashes and other splashes.

[0125] Preferably, the type determination unit 15 determines the splash type in the following manner: first, the CO detector 29 detects the CO content Z in the furnace. If Z ≥ X, where X is the CO content limit threshold, the type determination unit 15 determines that it is an explosive splash;

[0126] If Z<X, the type determination unit 15 determines that it is other splashing.

[0127] The splash processing module 3 is used to receive the instruction information of the central control module 4 and process different splash phenomena occurring inside the converter;

[0128] Preferably, the splash treatment module 3 includes an oxygen lance 31, an oxygen lance lifting device 32 and a limestone dosing unit 33;

[0129] An oxygen lance 31 is used to add oxygen into the converter. The oxygen lance 31 is fixedly mounted on the output end of the oxygen lance lifting device 32;

[0130] An oxygen lance lifting device 32, used to control the height adjustment of the oxygen lance 31;

[0131] The limestone dosing unit 33 is used to cool the molten pool, thicken the slag, and suppress splashing. The limestone dosing unit 33 is fixedly installed above the converter;

[0132] The oxygen lance 31 , the oxygen lance lifting device 32 and the limestone dosing unit 33 are all electrically connected to the central control module 4 .

[0133] Preferably, when a small splashing phenomenon occurs inside the converter, the limestone adding unit 33 adds appropriate limestone into the converter;

[0134] When the type determination unit 15 determines that explosive splashing occurs inside the converter, the oxygen lance lifting device 32 lowers the position of the oxygen lance 31, and the limestone adding unit 33 adds appropriate limestone into the converter;

[0135] When the type determination unit 15 determines that other splashing phenomena occur inside the converter, the oxygen lance lifting device 32 raises the position of the oxygen lance 31, and the limestone adding unit 33 adds appropriate limestone into the converter;

[0136] Beneficial effect: The oxygen lance 31, the oxygen lance lifting device 32, and the limestone dosing unit 33 are adapted to different splashing types, so as to achieve the purpose of quickly suppressing splashing in the furnace;

[0137] The cleaning and emission module 2 is used to receive the control information of the central control module 4, absorb and filter the smoke that covers the flame inside the converter, and realize the circulation of the gas in the furnace;

[0138] Preferably, the cleaning and emission module 2 includes an air pump 21, a cooler 22, a filter device 23, a gas storage tank 24, a fan 25, a gas purification device 26, a valve 1 27, a valve 28 and a CO detector 29. The CO detector 29 is fixedly installed inside the converter. One end of the air pump 21 is connected to the converter, and the other end of the air pump 21 is connected to one end of a plurality of capillary tubes. The capillary tubes are installed inside the cooler 22. The other end of the capillary tubes is connected to a first end of the filter device 23, the second end of the filter device 23 is connected to one end of the valve 1 27, the other end of the valve 1 27 is connected to the gas purification device 26, the third end of the filter device 23 is connected to one end of the valve 28, the other end of the valve 28 is connected to the air inlet of the gas storage tank 24, the air outlet of the gas storage tank 24 is connected to one end of the fan 25, and the other end of the fan 25 is connected to the converter.

[0139] Preferably, valve one 27 and valve two 28 are both solenoid valves.

[0140] Preferably, the gas purification device 26 is an activated carbon adsorber.

[0141] Preferably, the air pump 21 , the cooler 22 , the valve 1 27 , the valve 2 28 , the fan 25 , and the CO detector 29 are all electrically connected to the central control module 4 .

[0142] Effect: The air pump 21 is started to absorb the flue gas inside the converter into the capillary tube. Since the capillary tube is located in the cooler 22, the cooler 22 cools the capillary tube and thus cools the flue gas inside the capillary tube. The cooled flue gas enters the filter device 23.

[0143] When the flue gas needs to be treated, valve 28 is opened, the flue gas is filtered by the filter device 23 and enters the gas storage tank 24, the fan 25 is turned on, and the flue gas in the gas storage tank 24 is transferred to the converter until the CO detector 29 detects that the CO content in the converter is balanced, then the fan 25 is closed;

[0144] After the converter is finished, when the flue gas needs to be discharged, valve 1 27 is opened, the flue gas is filtered by the filter device 23 and enters the gas purification device 26. The gas purification device 26 adsorbs CO in the flue gas and then discharges the treated CO.

[0145] Alarm module 5: when splashing occurs inside the converter, after splashing treatment module 3 treats the converter, if camera 11 detects that splashing continues to occur and does not decrease, central control module 4 notifies technicians to go to the site for treatment through alarm module 5;

[0146] The present invention collects flames through the camera 11 and can process smoke that blocks the flames. By analyzing the flame image, the type of splashing in the furnace can be determined, and different processing methods can be given according to different splashing types, thereby achieving effectiveness and pertinence of splashing processing.

[0147] The present invention verifies the effectiveness of the splashing treatment by judging the treatment phenomenon after the splashing treatment, and treats the splashing phenomenon multiple times under the premise of effectiveness until the splashing disappears. If the treatment of the splashing is ineffective, an alarm is immediately issued through the alarm module 5 to notify the technician to come to the site to investigate the situation.

[0148] Embodiment 2: In some embodiments, Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, a method for using a furnace mouth flame analysis system with an early warning function comprises the following steps:

[0149] Step 1: The camera 11 collects flame image information and uploads it to the image judgment unit 12, and the image judgment unit 12 judges whether the smoke covers the flame;

[0150] If the smoke covers the flame, the central control module 4 controls the air pump 21 to start, and absorbs the smoke inside the converter into the capillary tube. Since the capillary tube is located in the cooler 22, the cooler 22 cools the capillary tube and thus cools the smoke inside the capillary tube. The cooled smoke enters the filter device 23 for filtration, and then the valve 28 is opened, and the smoke enters the gas storage tank 24. The fan 25 is turned on to pump the smoke in the gas storage tank 24 into the converter until the image judgment unit 12 determines that the smoke does not cover the flame, and the CO detector 29 detects that the CO content in the converter is balanced, then the fan 25 is turned off;

[0151] If the smoke does not cover the flame, the image determination unit 12 uploads the flame image information to the image analysis unit 13;

[0152] Step 2: The image analysis unit 13 receives the flame image information and determines whether splashing occurs. If splashing does not occur, the image analysis unit 13 outputs flame real-time detection information to the central control module 4;

[0153] If splashing occurs, the image analysis unit 13 uploads splashing video information containing splashing images to the number determination unit 16;

[0154] Step 3: The frequency determination unit 16 receives the splashing video information and determines whether the number of receptions is greater than 1. If so, step 4 is executed; if not, step 5 is executed;

[0155] Step 4: The number determination unit 16 uploads the splashing video information to the splashing comparison unit 17;

[0156] The splash comparison unit 17 receives the splash video information of this time and the splash video information of the last time uploaded by the number judgment unit 16, and extracts the splash time length t1 of this time and the splash time length t -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between:

[0157] If (t1 / t -1 )×100%≤50%, the splash comparison unit 17 determines that the splash is being suppressed, and uploads the splash video information to the video analysis unit 14;

[0158] If (t1 / t -1 )×100%>50%, the splash comparison unit 17 determines that the system's processing method is invalid, and the splash comparison unit 17 uploads the splash situation to the central control module 4, and the central control module 4 notifies the technicians to go to the site for processing through the alarm module 5;

[0159] Step 5: The number determination unit 16 uploads the splashing video information to the video analysis unit 14;

[0160] The video analysis unit 14 receives the splashing video information, extracts the splashing time length t1 and the splashing brightness s1, and then determines whether a large splashing phenomenon occurs;

[0161] The method for the video analysis unit 14 to determine the occurrence of large splashing is as follows: the video analysis unit 14 is provided with a splashing time length threshold t and a splashing brightness threshold s;

[0162] If t1 ≥ t, it is a large splash;

[0163] If t1<t, and if s1<s within the splashing time length t1, the video analysis unit 14 determines that it is a small splash;

[0164] If s1≥s exists within the splashing time length t1, the video analysis unit 14 first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ;

[0165] The video analysis unit 14 then determines t s The relationship with t1:

[0166] like Then the video analysis unit 14 determines it as a large splash;

[0167] like Then the video analysis unit 14 determines it as a small splash;

[0168] If a small splash occurs, the video analysis unit 14 outputs the data information of the small splash to the central control module 4, and the central control module 4 controls the splash processing module 3 to perform furnace control;

[0169] If a large splash phenomenon occurs, the video analysis unit 14 outputs the video information of the large splash to the type determination unit 15;

[0170] Step 6: The type determination unit 15 receives the video information of the large splash and determines whether the splash type in the furnace is an explosive splash or other splash;

[0171] The type determination unit 15 determines the splash type in the following manner: first, the CO detector 29 detects the CO content Z in the furnace. If Z ≥ X, where X is the CO content limit threshold, the type determination unit 15 determines that it is an explosive splash;

[0172] If Z<X, the type determination unit 15 determines it as other splashes;

[0173] Step 7: The oxygen lance 31, the oxygen lance lifting device 32 and the limestone dosing unit 33 are used to receive the command information of the central control module 4 and process the different splashing phenomena occurring inside the converter;

[0174] The treatment method is as follows: when a small splashing phenomenon occurs inside the converter, the limestone adding unit 33 adds appropriate limestone into the converter;

[0175] When the type determination unit 15 determines that explosive splashing occurs inside the converter, the oxygen lance lifting device 32 lowers the position of the oxygen lance 31, and the limestone adding unit 33 adds appropriate limestone into the converter;

[0176] When the type determination unit 15 determines that other splashing phenomena occur inside the converter, the oxygen lance lifting device 32 raises the position of the oxygen lance 31, and the limestone adding unit 33 adds appropriate limestone into the converter;

[0177] After the oxygen lance 31, the oxygen lance lifting device 32 and the limestone dosing unit 33 process the splashing phenomenon, the camera 11 collects image information in real time, and steps one, two and three are repeated.

[0178] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A furnace flame analysis system with an early warning function, comprising a central control module (4), characterized in that: It also comprises a flame analysis module (1), a cleaning and emission module (2), a splash treatment module (3), a central control module (4) and an alarm module (5), wherein the central control module (4) is connected to the flame analysis module (1), the cleaning and emission module (2), the splash treatment module (3) and the alarm module (5); The flame analysis module (1) is used to collect and analyze flame image information to determine whether smoke covering the flame and splashing occur; The flame analysis module (1) comprises a camera (11), an image judgment unit (12), an image analysis unit (13), a video analysis unit (14) and a type judgment unit (15); A camera (11) is used to collect flame image information and upload it to an image determination unit (12), and the camera (11) is communicatively connected to the image determination unit (12); An image judgment unit (12) is used to receive flame image information and judge whether smoke covers the flame, and the image judgment unit (12) is communicatively connected with the central control module (4) and the image analysis unit (13); If the smoke covers the flame, the image information of the smoke covering the flame is uploaded to the central control module (4), and the central control module (4) controls the cleaning and emission module (2) to process the smoke until the image judgment unit (12) judges that the smoke does not cover the flame, and the central control module (4) controls the cleaning and emission module (2) to stop; If the smoke does not cover the flame, the flame image information is uploaded to the image analysis unit (13); An image analysis unit (13) is used to receive flame image information and determine whether splashing occurs, and the image analysis unit (13) is communicatively connected with the central control module (4) and the frequency determination unit (16); If no splashing occurs, the image analysis unit (13) outputs real-time flame detection information to the central control module (4); If splashing occurs, the image analysis unit (13) uploads splashing video information containing the splashing image to the number determination unit (16); A frequency determination unit (16) is used to receive the splashing video information and determine whether the number of receptions is greater than 1, and the frequency determination unit (16) is communicatively connected with the splashing comparison unit (17) and the video analysis unit (14); If the number of receptions is greater than 1, the number determination unit (16) uploads the splash video information to the splash comparison unit (17); If the number of receptions is 1, the number determination unit (16) uploads the splash video information to the video analysis unit (14); The splash comparison unit (17) is used to receive the splash video information of this time and the splash video information of the previous time uploaded by the number judgment unit (16), and extract the splash time length t1 of this time and the splash time length t -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between: If (t1 / t -1 )×100%≤50%, the splash comparison unit (17) determines that the splash is being suppressed, and uploads the splash video information to the video analysis unit (14); If (t1 / t -1 )×100%>50%, the splash comparison unit (17) determines that the system's processing method is invalid, and the splash comparison unit (17) uploads the splash situation to the central control module (4), and the central control module (4) notifies the technicians to go to the scene to handle the situation through the alarm module (5); A video analysis unit (14) is used to receive splash video information, extract effective video information, and then determine whether a large splash phenomenon occurs. The video analysis unit (14) is in communication connection with the central control module (4) and the type determination unit (15); If a small splash occurs, the video analysis unit (14) outputs data information of the small splash to the central control module (4), and the central control module (4) controls the splash processing module (3) to perform furnace control; If a large splashing phenomenon occurs, the video analysis unit (14) outputs the video information of the large splashing to the type judgment unit (15); A type determination unit (15) receives video information of large splashes and determines the type of splashes in the furnace, the type determination unit (15) being in communication connection with the central control module (4); A splash processing module (3) is used to receive instruction information from the central control module (4) and process different splash phenomena occurring inside the converter; The cleaning and emission module (2) is used to receive control information from the central control module (4), absorb and filter the smoke that obscures the flame inside the converter, and realize the circulation of the gas inside the furnace; The alarm module (5) generates splashing inside the converter. After the splashing treatment module (3) treats the converter, the camera (11) detects that the splashing has not been effectively treated. Then, the central control module (4) notifies the technicians to come to the site for treatment through the alarm module (5).

2. The furnace mouth flame analysis system with early warning function according to claim 1 is characterized in that: The effective information is the splashing time length t1 and the splashing brightness s1.

3. The furnace mouth flame analysis system with early warning function according to claim 2 is characterized in that: The method for the video analysis unit (14) to determine the occurrence of large splashing is as follows: the video analysis unit (14) is provided with a splashing time length threshold t and a splashing brightness threshold s; If t1 ≥ t, it is a large splash; If t1<t, and if s1<s within the splashing time length t1, the video analysis unit (14) determines that it is a small splash; If s1≥s exists within the splashing time length t1, the video analysis unit (14) first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ; The video analysis unit (14) then determines t s The relationship with t1: like The video analysis unit (14) determines that it is a large splash; like The video analysis unit (14) then determines it to be a small splash.

4. The furnace mouth flame analysis system with early warning function according to claim 1 is characterized in that: The cleaning and emission module (2) comprises an air pump (21), a cooler (22), a filter device (23), an air storage tank (24), a fan (25), a gas purification device (26), a valve 1 (27), a valve 2 (28) and a CO detector (29), wherein the CO detector (29) is fixedly installed inside the converter, one end of the air pump (21) is connected to the converter, and the other end of the air pump (21) is connected to one end of a plurality of capillary pipes, and the capillary pipes are installed inside the cooler (22). The other end of the capillary tube is connected to the first end of the filter device (23), the second end of the filter device (23) is connected to one end of the valve one (27), the other end of the valve one (27) is connected to the gas purification device (26), the third end of the filter device (23) is connected to one end of the valve two (28), the other end of the valve two (28) is connected to the air inlet of the gas storage tank (24), the air outlet of the gas storage tank (24) is connected to one end of the fan (25), and the other end of the fan (25) is connected to the converter.

5. The furnace mouth flame analysis system with early warning function according to claim 4 is characterized in that: The air pump (21), the cooler (22), the valve 1 (27), the valve 2 (28), the fan (25), and the CO detector (29) are all electrically connected to the central control module (4).

6. The furnace mouth flame analysis system with early warning function according to claim 5 is characterized in that: Valve 1 (27) and valve 2 (28) are both solenoid valves.

7. The furnace mouth flame analysis system with early warning function according to claim 1 is characterized in that: Splash types include explosive splash and other splash; The type judgment unit (15) judges the splash type in the following manner: first, the CO detector (29) detects the CO content Z in the furnace, and if Z≥X, where X is a CO content limit threshold, the type judgment unit (15) judges that the splash is an explosive splash; If Z<X, the type judgment unit (15) judges it as other splashing.

8. The furnace mouth flame analysis system with early warning function according to claim 1 is characterized in that: The splash treatment module (3) comprises an oxygen lance (31), an oxygen lance lifting device (32) and a limestone dosing unit (33); An oxygen lance (31) is used to add oxygen into the converter, and the oxygen lance (31) is fixedly mounted on the output end of the oxygen lance lifting device (32); An oxygen lance lifting device (32) for controlling the height adjustment of the oxygen lance (31); A limestone dosing unit (33) is used to cool the molten pool, thicken the slag, and suppress splashing. The limestone dosing unit (33) is fixedly installed above the converter; The oxygen lance (31), the oxygen lance lifting device (32) and the limestone dosing unit (33) are all electrically connected to the central control module (4).

9. The furnace mouth flame analysis system with early warning function according to claim 8 is characterized in that: When a small splash occurs inside the converter, the limestone adding unit (33) adds appropriate limestone into the converter; When the type determination unit (15) determines that explosive splashing occurs inside the converter, the oxygen lance lifting device (32) lowers the position of the oxygen lance (31), and the limestone adding unit (33) adds appropriate limestone into the converter; When the type determination unit (15) determines that other splashing phenomena occur inside the converter, the oxygen lance lifting device (32) raises the position of the oxygen lance (31), and the limestone adding unit (33) adds appropriate limestone into the converter.

10. A method for analyzing furnace mouth flame with early warning function, used in the furnace mouth flame analysis system with early warning function as claimed in claim 9, characterized in that: The following steps are involved: Step 1: The camera (11) collects flame image information and uploads it to the image judgment unit (12), and the image judgment unit (12) judges whether smoke covers the flame; If the smoke covers the flame, the central control module (4) controls the air pump (21) to start, and absorbs the smoke inside the converter into the capillary tube. Since the capillary tube is located in the cooler (22), the cooler (22) cools the capillary tube and thus cools the smoke inside the capillary tube. The cooled smoke enters the filter device (23) for filtration. Then the valve 2 (28) is opened, and the smoke enters the gas storage tank (24). The fan (25) is turned on to pump the smoke in the gas storage tank (24) into the converter until the image judgment unit (12) determines that the smoke does not cover the flame, and the CO detector (29) detects that the CO content in the converter is balanced, then the fan (25) is turned off. If the smoke does not cover the flame, the image determination unit (12) uploads the flame image information to the image analysis unit (13); Step 2: The image analysis unit (13) receives flame image information and determines whether splashing occurs. If splashing does not occur, the image analysis unit (13) outputs flame real-time detection information to the central control module (4); If splashing occurs, the image analysis unit (13) uploads splashing video information containing the splashing image to the number determination unit (16); Step 3: The frequency determination unit (16) receives the splashing video information and determines whether the number of receptions is greater than 1. If so, step 4 is executed; if not, step 5 is executed. Step 4: The number determination unit (16) uploads the splashing video information to the splashing comparison unit (17); The splash comparison unit (17) receives the splash video information of this time and the splash video information of the previous time uploaded by the number judgment unit (16), and extracts the splash time length t1 of this time and the splash time length t -1 , determine the current splashing time length t1 and the previous splashing time length t -1 The relationship between: If (t1 / t -1 )×100%≤50%, the splash comparison unit (17) determines that the splash is being suppressed, and uploads the splash video information to the video analysis unit (14); If (t1 / t -1 )×100%>50%, the splash comparison unit (17) determines that the system's processing method is invalid, and the splash comparison unit (17) uploads the splash situation to the central control module (4), and the central control module (4) notifies the technicians to go to the scene to handle the situation through the alarm module (5); Step 5: The frequency determination unit (16) uploads the splashing video information to the video analysis unit (14); The video analysis unit (14) receives the splashing video information, extracts the splashing time length t1 and the splashing brightness s1, and then determines whether a large splashing phenomenon occurs; The method for the video analysis unit (14) to determine the occurrence of large splashing is as follows: the video analysis unit (14) is provided with a splashing time length threshold t and a splashing brightness threshold s; If t1 ≥ t, it is a large splash; If t1<t, and if s1<s within the splashing time length t1, the video analysis unit (14) determines that it is a small splash; If s1≥s exists within the splashing time length t1, the video analysis unit (14) first calculates the cumulative time length t1 during which the splashing brightness s1 is greater than or equal to the splashing brightness threshold s. s ; The video analysis unit (14) then determines t s The relationship with t1: like Then the video analysis unit (14) determines it as a large splash; like The video analysis unit (14) determines that it is a small splash; If a small splash occurs, the video analysis unit (14) outputs data information of the small splash to the central control module (4), and the central control module (4) controls the splash processing module (3) to perform furnace control; If a large splashing phenomenon occurs, the video analysis unit (14) outputs the video information of the large splashing to the type judgment unit (15); Step 6: The type determination unit (15) receives the video information of the large splash and determines whether the splash type in the furnace is an explosive splash or other splash; The type judgment unit (15) judges the splash type in the following manner: first, the CO detector (29) detects the CO content Z in the furnace, and if Z≥X, where X is a CO content limit threshold, the type judgment unit (15) judges that the splash is an explosive splash; If Z<X, the type judgment unit (15) judges it as other splashing; Step 7: The oxygen lance (31), the oxygen lance lifting device (32) and the limestone dosing unit (33) are used to receive the command information of the central control module (4) and process different splashing phenomena occurring inside the converter; The treatment method is as follows: when a small splashing phenomenon occurs inside the converter, the limestone adding unit (33) adds appropriate limestone into the converter; When the type determination unit (15) determines that explosive splashing occurs inside the converter, the oxygen lance lifting device (32) lowers the position of the oxygen lance (31), and the limestone adding unit (33) adds appropriate limestone into the converter; When the type determination unit (15) determines that other splashing phenomena occur inside the converter, the oxygen lance lifting device (32) raises the position of the oxygen lance (31), and the limestone adding unit (33) adds appropriate limestone into the converter; After the oxygen lance (31), the oxygen lance lifting device (32) and the limestone dosing unit (33) process the splashing phenomenon, the camera (11) collects image information in real time, and steps one, two and three are repeated.

Images