An online detection system and method for pollutants in glass production

Abstract

The present application discloses an online pollutant detection system and detection method for glass production, which relates to the field of pollutant detection technology. The system includes: multiple detection subsystems for detecting different characteristics of test samples in a glass kiln chimney; a sampling unit arranged between the detection subsystem and the glass kiln chimney; a sampling pipeline having an input end and multiple output ends; the output ends are connected to the detection subsystems in a one-to-one correspondence; a control valve is provided on the sampling pipeline; a sampling port is provided on the side wall of the glass kiln chimney and is connected to the input end; the central axis of the sampling port forms a first angle with a first reference line; a condensate collection tank is provided on the inner wall of the glass kiln chimney and is located below the sampling port; the condensate collection tank is connected to the external environment through a conduit; when condensate is generated at the sampling port, the condensate flows back from the sampling port to the condensate collection tank and is discharged through the conduit. This prevents the test sample from being entrained with condensate and affecting the accuracy of subsequent measurements.

Description

Technical Field

[0001] The present application generally relates to the field of pollutant detection technology, and specifically relates to an online pollutant detection system and detection method for glass production. Background Art

[0002] Glass furnaces use chimney gas sampling to detect pollutants during production. Existing online detection systems typically consist of a gaseous pollutant detection subsystem, a smoke detection subsystem, a flue gas parameter detection subsystem, and a data acquisition and processing subsystem. However, for any of these detection subsystems, fluctuations in flue gas temperature and ambient temperature during actual flue gas sampling can lead to condensation. This condensation can cause fluctuations in the measurement data of the measurement subsystem, leading to measurement errors. Therefore, the problem of condensation entrained in the flue gas during sampling needs to be addressed.

[0003] Currently, heating devices are often added to the sampling gun to ensure a constant temperature for the sampled flue gas. However, this does not address the temperature difference at the sampling port. As ambient temperature changes, especially during sudden drops in temperature, the temperature difference at the sampling port can also rise sharply, generating condensation and still causing inaccurate measurement data. Therefore, we propose an online contaminant detection system and method for glass production to address this issue. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an online contaminant detection system and method for glass production that improves measurement accuracy.

[0005] In a first aspect, the present application provides an online contaminant detection system for glass production, comprising:

[0006] A plurality of detection subsystems, each of which is used to detect different characteristics of a test sample in a glass furnace chimney;

[0007] A sampling unit, which is arranged between the detection subsystem and the glass furnace chimney; the sampling unit at least includes:

[0008] A sampling pipeline, wherein the sampling pipeline has an input end and multiple output ends that are interconnected; the output ends are in one-to-one correspondence and connected to the detection subsystem; a control valve is provided on the sampling pipeline for controlling the on-off of the sampling pipeline;

[0009] a sampling port, the sampling port being provided on a side wall of the glass furnace chimney and being connected to the input end; a central axis of the sampling port forming a first angle with a first reference line, an opening of the first angle facing the output end; the first reference line being perpendicular to the central axis of the glass furnace chimney and parallel to the central axis of the sampling pipeline;

[0010] A condensed water collection tank, the condensed water collection tank being arranged on the inner wall of the glass furnace chimney and being located below the sampling port; the condensed water collection tank being connected to the external environment through a conduit;

[0011] When condensed water is generated at the sampling port, the condensed water flows back from the sampling port to the condensed water collection pool and is discharged through the conduit.

[0012] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes:

[0013] a heating module, the heating module being disposed at a connection position between the sampling port and the input end, the heating module being used to heat the test sample in the sampling port;

[0014] a temperature detection module, the temperature detection module being disposed at the sampling port and being used to measure the temperature of a test sample in the sampling port;

[0015] A processing module is communicatively connected with the heating module and the temperature detection module, and is used to control the heating degree of the heating module according to the temperature measured by the temperature detection module.

[0016] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes:

[0017] A heat preservation module is provided on the outer wall of the sampling pipeline and at the connection position between the sampling port and the input end, and is used to keep the test sample warm.

[0018] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes:

[0019] a humidity detection module, the humidity detection module being disposed at the sampling port and being in communication with the processing module, the humidity detection module being configured to measure the humidity of the test sample in the sampling port;

[0020] An early warning module is communicatively connected to the processing module, and is configured to issue a first warning message when the processing module determines that the humidity measured by the humidity detection module exceeds a preset humidity range.

[0021] In a second aspect, the present application provides a method for online detection of contaminants for glass production, which is implemented based on the above-mentioned online detection system for contaminants for glass production. The method comprises the following steps:

[0022] Obtaining a first condensed water content of the test sample at the sampling port;

[0023] Calculating a difference between the first condensed water content and a preset content to obtain a first difference value;

[0024] When the first difference is a non-zero value, adjusting the control valve on the sampling pipeline to a first opening;

[0025] Calling a control database, and searching the control database for a content difference range in which the absolute value of the first difference lies, to obtain a corresponding heating rate; the control database includes: a plurality of content difference ranges and corresponding heating rates;

[0026] According to the heating rate, controlling the heating module to heat the connection position between the sampling port and the input end;

[0027] obtaining a second condensed water content of the test sample;

[0028] calculating a difference between the second condensed water content and the preset content to obtain a second difference value;

[0029] When the second difference is zero, the control valve is adjusted to a second opening; the second opening is greater than the first opening.

[0030] According to the technical solution provided in the embodiment of the present application, obtaining the first condensed water content of the test sample at the sampling port specifically includes the following steps:

[0031] When the control valve is in a closed state, obtaining an initial condensed water content of the test sample; the initial condensed water content is greater than the first condensed water content and greater than the second condensed water content;

[0032] When the initial condensed water content is greater than or equal to the set condensed water content, the test sample from the sampling port is dried and the condensed water content is obtained again;

[0033] If the current condensed water content is less than the set condensed water content, the current condensed water content is recorded as the first condensed water content.

[0034] According to the technical solution provided in the embodiment of the present application, before obtaining the first condensed water content of the test sample at the sampling port, the following steps are also included:

[0035] Acquire a first temperature value inside the chimney of the glass furnace and a second temperature value inside the sampling pipeline near the output end at the same historical moment;

[0036] Calculating a difference between the first temperature value and the second temperature value to obtain a first temperature difference value;

[0037] If the first temperature difference is greater than or equal to a preset temperature difference, controlling the heating module to heat the sampling pipeline and the connection between the sampling pipeline and the sampling port according to a first set temperature;

[0038] collecting a third temperature value inside the sampling pipeline near the output end;

[0039] Calculating a difference between the first temperature value and the third temperature value to obtain a second temperature difference value;

[0040] If the second temperature difference is less than the preset temperature difference, the step of obtaining the first condensed water content of the test sample at the sampling port is performed.

[0041] According to the technical solution provided in the embodiment of the present application, the following steps are also included:

[0042] Acquire an image set of the sampling port; the image set includes: a plurality of images of consecutive positions of the inner wall of the sampling port;

[0043] Traversing the image collection and identifying a contaminated area in each image;

[0044] The contaminated area is purged in a direction according to the position of the inner wall of the sampling port corresponding to the contaminated area.

[0045] According to the technical solution provided in the embodiment of the present application, the contaminated area is purged directionally according to the position of the inner wall of the sampling port corresponding to the contaminated area, specifically comprising the following steps:

[0046] Identify the contaminated area of ​​all said contaminated areas;

[0047] Sort all polluted areas in descending order of the polluted area to obtain a first sequence;

[0048] Obtaining the straight-line distance between the center points of all contaminated areas in the first sequence and the central axis of the glass furnace chimney;

[0049] Adjust the first sequence according to the order of the linear distance from large to small to obtain a second sequence;

[0050] The contaminated areas are directionally purged one by one according to the order of the second sequence.

[0051] It can be seen from the above technical solution that this application has at least the following beneficial effects:

[0052] The present application discloses an online detection system for pollutants used in glass production, which includes: multiple detection subsystems, different detection subsystems are used to detect different characteristics of detection samples in the glass kiln chimney; a sampling unit is provided between the detection subsystem and the glass kiln chimney, specifically, the sampling unit at least includes: a sampling port opened on the side wall of the glass kiln chimney, the sampling port is connected to the input end, and the central axis of the sampling port and the first reference line form a first angle, the opening of the first angle faces the output end, here, the first reference line is perpendicular to the central axis of the glass kiln chimney and is arranged parallel to the central axis of the sampling pipeline; further, a condensate collection pool is provided on the inner wall of the glass kiln chimney, and it is located below the sampling port, and the condensate collection pool is connected to the external environment through a conduit; when condensate is generated at the sampling port, the condensate flows back from the sampling port to the condensate collection pool and is discharged through the conduit.

[0053] The central axis of the sampling port of this system is designed to form a first angle with the first reference line. When the detection subsystem needs to obtain a test sample, the control valve is opened, and the test sample is transported to the corresponding detection subsystem through the sampling port and the sampling pipeline. Due to the temperature difference between the internal temperature of the glass kiln chimney and the external ambient temperature, condensed water will appear when the test sample passes through the sampling port. At this time, the condensed water is introduced into the condensed water collection pool using the inclined sampling port to avoid condensed water being entrained in the test sample and affecting the measurement accuracy of the corresponding detection subsystem. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0055] Figure 1 This is a schematic diagram of the structure of the online detection system for pollutants used in glass production.

[0056] Figure 2 Schematic diagram of the sampling port structure.

[0057] Figure 3 Schematic diagram of the process of online detection method for contaminants in glass production.

[0058] Figure 4 Schematic diagram of the pretreatment process before online detection of pollutants in glass production.

[0059] Numbers in the figure: 1. Detection subsystem; 2. Glass kiln chimney; 3. Sampling pipeline; 4. Control valve; 5. Sampling port; 6. Condensate collection tank; 7. Conduit; 8. Heating module; 9. Temperature detection module; 10. Processing module; 11. Insulation module; 12. Humidity detection module; 13. Early warning module. DETAILED DESCRIPTION

[0060] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0061] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0062] To make the description of the following embodiments clear and concise, a brief introduction to the related technologies is first given:

[0063] The existing online monitoring system consists of a gaseous pollutant detection subsystem, a smoke detection subsystem, a flue gas parameter detection subsystem, and a data acquisition and processing subsystem. The gaseous pollutant detection subsystem is mainly used to detect the content of SO2, NOx, and other substances in the glass kiln chimney. It generally uses a spectroscopic gas analyzer combined with a sampling preprocessing system for measurement. The spectral gas analyzer consists of a spectrometer, a lamp, and a gas chamber. The smoke detection subsystem is mainly used to detect particulate matter in the glass kiln chimney. It generally uses a laser backscattering smoke detector to measure the concentration of dust in the flue gas using the laser backscattering principle, or uses an extractive light scattering method to measure the concentration of dust in the flue gas. The smoke parameter detection subsystem is mainly used to detect physical quantities such as flow rate, temperature, pressure, humidity, and oxygen in the glass kiln chimney. The data acquisition and processing subsystem is mainly used to control the sample collection, data processing, and analysis between each detection subsystem and the glass kiln chimney.

[0064] The above-mentioned detection subsystem is relatively accurate during normal flue gas sampling and analysis. However, changes in flue gas temperature and ambient temperature can cause condensation to appear in the flue gas. For any detection subsystem, condensation will cause fluctuations in the measurement data and measurement errors. It is urgent to solve the problem of condensation entrained in the flue gas during the sampling process.

[0065] In order to make the online detection system for pollutants in glass production provided by the embodiment of the present application clearer and easier to understand, the system is introduced below with reference to the accompanying drawings. Figure 1 As shown in the figure, this figure is a structural schematic diagram of an online contaminant detection system for glass production provided by an embodiment of the present application, the system comprising:

[0066] Multiple detection subsystems 1 are provided, each used to detect different characteristics of a test sample in a glass furnace chimney 2. The detection subsystems 1 include a gaseous pollutant detection subsystem, a smoke dust detection subsystem, a flue gas parameter detection subsystem, and the like. The purpose and implementation of each detection subsystem have been briefly described in the relevant introduction and will not be repeated here. Here, the test sample refers to the flue gas sample required for testing.

[0067] The sampling unit is arranged between the detection subsystem 1 and the glass furnace chimney 2; the sampling unit at least includes:

[0068] The sampling pipeline 3 has an input end and multiple output ends that are interconnected; the output ends correspond to and are connected to the detection subsystem 1 one by one; a control valve 4 is provided on the sampling pipeline 3 to control the on-off of the sampling pipeline 3; wherein, the sampling pipeline 3 is used to transmit the flue gas in the glass kiln chimney 2 to the online detection system, the number of the output ends is equal to the number of the detection subsystems 1, and the input end is used to communicate with the sampling port 5 on the glass kiln chimney 2; the type of the control valve 4 is, for example, a one-way valve, which is used to prevent the flue gas from flowing in the opposite direction.

[0069] The sampling port 5 is provided on the side wall of the glass furnace chimney 2 and is connected to the input end; the central axis of the sampling port 5 forms a first angle with the first reference line, and the opening of the first angle faces the output end; the first reference line is perpendicular to the central axis of the glass furnace chimney 2 and is parallel to the central axis of the sampling pipeline 3; wherein, Figure 2 As shown in the figure, L represents the first reference line, M represents the central axis of the sampling port 5, N represents the central axis of the glass kiln chimney 2, and a represents the first angle. Here, the angle of the first angle is, for example, 5°. The first angle can be designed according to the actual specifications of the glass kiln chimney 2 and the specifications of the sampling pipeline 3 and the relative positions of the two.

[0070] Condensate collection pool 6, condensate collection pool 6 is arranged on the inner wall of glass furnace chimney 2 and is located below sampling port 5; condensate collection pool 6 is connected to the external environment through conduit 7; wherein, Figure 1 As shown, the conduit 7 is connected to the bottom of the condensate collection tank 6. The condensate collection tank 6 can receive the condensate flowing out of the sampling port 5 and regularly discharge it to the external environment through the conduit 7. A drain valve is installed on the conduit 7 to control the connection and disconnection between the condensate collection tank 6 and the external environment.

[0071] When condensed water is generated at the sampling port 5 , the condensed water flows back from the sampling port 5 to the condensed water collection tank 6 and is discharged through the conduit 7 .

[0072] The central axis of the sampling port 5 of this system is designed to form a first angle with the first reference line. When the detection subsystem 1 needs to obtain a test sample, the control valve 4 is opened, and the test sample is transported to the corresponding detection subsystem 1 through the sampling port 5 and the sampling pipeline 3. Due to the temperature difference between the internal temperature of the glass kiln chimney 2 and the external ambient temperature, condensed water will appear when the test sample passes through the sampling port 5. At this time, the condensed water is introduced into the condensed water collection tank 6 using the inclined sampling port 5 to avoid condensed water being entrained in the test sample and affecting the measurement accuracy of the corresponding detection subsystem 1.

[0073] Furthermore, the sampling unit further comprises:

[0074] The heating module 8 is provided at the connection position between the sampling port 5 and the input end. The heating module 8 is used to heat the detection sample in the sampling port 5. The heating module 8 is, for example, an electric heating device.

[0075] The temperature detection module 9 is provided at the sampling port 5 and is used to measure the temperature of the detection sample in the sampling port 5 . The temperature detection module 9 is, for example, a temperature sensor.

[0076] The processing module 10 is in communication with the heating module 8 and the temperature detection module 9. The processing module 10 is configured to control the degree of heating of the heating module 8 according to the temperature measured by the temperature detection module 9. The model of the processing module 10 is, for example, Siemens S7-1500 CPU 6ES7531-7KF00-0AB0.

[0077] The temperature detection module 9 measures the temperature of the test sample at the sampling port 5 in real time. The processing module 10 controls the degree of heating of the test sample by the heating module 8 based on the temperature of the test sample at the sampling port 5. Here, the heating degree refers to the degree of control over the heating temperature and heating duration of the test sample. By heating the test sample, the temperature difference between the sampling port 5, the sampling line 3, and the external environment is narrowed, thereby helping to reduce the risk of condensation in the test sample.

[0078] Furthermore, the sampling unit further comprises:

[0079] The heat preservation module 11 is arranged on the outer wall of the sampling pipeline 3 and the connection position between the sampling port 5 and the input end. The heat preservation module 11 is used to keep the test sample warm.

[0080] Among them, the type of the insulation module 11 is, for example, an insulation layer, which is wrapped around the outer wall of the sampling pipeline 3 and the connection position between the sampling port 5 and the input end, and plays a role in heat preservation for the test sample. In addition, the above-mentioned heating module 8 and insulation module 11 can be used at the same time, which can minimize the risk of condensation water in the test sample, thereby better ensuring the accuracy of subsequent measurement results.

[0081] Furthermore, the sampling unit further comprises:

[0082] The humidity detection module 12 is provided at the sampling port 5 and is in communication with the processing module 10 . The humidity detection module 12 is used to measure the humidity of the test sample in the sampling port 5 . The humidity detection module 12 is, for example, a humidity sensor.

[0083] The warning module 13 is in communication with the processing module 10 and is configured to issue a first warning message when the processing module 10 determines that the humidity measured by the humidity detection module 12 exceeds a preset humidity range. The warning module 13 may be, for example, a warning light or an alarm.

[0084] The humidity detection module 12 regularly measures the real-time humidity of the test sample. If the real-time humidity exceeds a preset humidity range, it indicates that the test sample transmitted to the detection subsystem 1 contains condensed water and the measurement result is inaccurate. The processing module 10 controls the early warning module 13 to issue a first warning message, reminding the staff that condensed water is present in the current equipment and system. It is necessary to close the control valve 4 and adjust the heating level of the heating module 8. After the adjustment, the test sample should be recollected to ensure the authenticity and accuracy of the final measurement result. Here, the preset humidity range can be set according to actual needs.

[0085] This application provides an online detection method for pollutants in glass production, which is based on the above-mentioned online detection system for pollutants in glass production. Figure 3 and Figure 4 As shown, the method includes the following steps:

[0086] S001. Obtain a first temperature value inside the chimney 2 of the glass furnace and a second temperature value inside the sampling pipeline 3 near the output end at the same historical moment.

[0087] The same historical moment refers to the temperature collection moment when the device and system are working and the closest to the current detection moment. Here, the first temperature value and the second temperature value can both be collected using a temperature sensor.

[0088] S002. Calculate the difference between the first temperature value and the second temperature value to obtain a first temperature difference value.

[0089] The first temperature difference is used to represent the temperature difference between the inside of the glass furnace chimney 2 and the sampling pipeline 3 .

[0090] S003 : If the first temperature difference is greater than or equal to the preset temperature difference, control the heating module 8 to heat the sampling pipeline 3 and the connection between the sampling pipeline 3 and the sampling port 5 according to the first set temperature.

[0091] Among them, if the first temperature difference is greater than or equal to the preset temperature difference, it indicates that condensation is likely to occur when transferring the test sample according to the current situation, affecting the accuracy of the measurement results. Therefore, it is necessary to heat the sampling pipe 3 and the connection between the sampling pipe 3 and the sampling port 5 to prioritize solving the problem of condensation in the test sample caused by the temperature difference between the sampling pipe 3 and the glass furnace chimney 2. In addition, the heating method also isolates the influence of the external environment temperature on the test sample, minimizing the risk of condensation. Here, the preset temperature difference and the first set temperature can be set according to actual needs;

[0092] If the first temperature difference is less than the preset temperature difference, it means that the temperature difference is within the error range and will not affect the accuracy of the final measurement result, and step S004 is executed.

[0093] S004 , collecting a third temperature value inside the sampling pipeline 3 near the output end.

[0094] The third temperature value can be acquired by using a temperature sensor.

[0095] S005. Calculate the difference between the first temperature value and the third temperature value to obtain a second temperature difference value.

[0096] The second temperature difference is used to represent the temperature difference generated during the transfer of the test sample from the input end to the output end of the sampling pipeline 3 .

[0097] S006 : If the second temperature difference is less than the preset temperature difference, obtain the first condensed water content of the test sample at the sampling port 5 .

[0098] If the second temperature difference is greater than or equal to the preset temperature difference, it indicates that condensation water is likely to appear when the test sample is transferred according to the current situation, which affects the accuracy of the measurement results. An insulation module, i.e., an insulation layer, can be added to the outer wall of the sampling pipeline 3 and the connection position between the sampling port 5 and the input end to reduce the temperature difference of the test sample during the transfer process and prevent condensation water from appearing during the transfer process, which affects the measurement accuracy.

[0099] S100 , obtaining a first condensed water content of the test sample at the sampling port 5 .

[0100] The method of obtaining the first condensed water content of the test sample at the sampling port 5 specifically includes the following steps:

[0101] When the control valve 4 is in a closed state, the initial condensed water content of the test sample is obtained; the initial condensed water content is greater than the first condensed water content and greater than the second condensed water content; wherein, the control valve 4 is in a closed state when the entire system has not yet started a normal detection working state.

[0102] When the initial condensed water content is greater than or equal to the set condensed water content, the test sample from sampling port 5 is dried and the condensed water content is measured again. Here, the set condensed water content can be set according to actual needs. If the initial condensed water content is greater than or equal to the set condensed water content, it indicates that the current condensed water content has a serious impact on the measurement results and requires prompt attention.

[0103] If the current condensed water content is less than the set condensed water content, the current condensed water content is recorded as the first condensed water content. If the current condensed water content is less than the set condensed water content, it indicates that the influence of the current condensed water content is within the uncontrollable range, and the current condensed water content is recorded as the first condensed water content and step S101 is executed.

[0104] S101. Calculate the difference between a first condensed water content and a preset content to obtain a first difference value.

[0105] The preset content can be set according to actual needs.

[0106] S102 : When the first difference is a non-zero value, adjust the control valve 4 on the sampling pipeline 3 to a first opening.

[0107] If the first difference is a non-zero value, it means that the influence of the current condensed water content is within a controllable range, and the control valve 4 can be opened and set to the first opening to allow the test sample to flow slowly.

[0108] S103 , calling a control database, and searching the control database for a content difference range in which the absolute value of the first difference lies, to obtain a corresponding heating rate; the control database includes: a plurality of content difference ranges and corresponding heating rates.

[0109] The first difference is a non-zero value, which can be positive or negative. The corresponding heating rate is obtained by searching the content difference range corresponding to the absolute value of the first difference in Table 1. The control database is shown in Table 1. The values ​​represented by H1 to H6 are different and show a gradually increasing trend. Similarly, the values ​​represented by W1 to W3 are also different and show a gradually increasing trend.

[0110] Table 1 Control database

[0111]

[0112] S104 , controlling the heating module 8 to heat the connection position between the sampling port 5 and the input end according to the heating rate.

[0113] Specifically, the heating module 8 is controlled to heat the connection position between the sampling port 5 and the input end at the heating rate obtained in step S103 to evaporate the condensed water, thereby preventing the detection sample from containing condensed water.

[0114] S105: Obtain a second condensed water content of the test sample.

[0115] The second condensed water content can be collected using a humidity sensor.

[0116] S106. Calculate the difference between the second condensed water content and the preset content to obtain a second difference value.

[0117] S107 . When the second difference is zero, the regulating control valve 4 is in a second opening; the second opening is greater than the first opening.

[0118] If the second difference is zero, it means that the influence of the current condensed water content is within a controllable range, and the control valve 4 can be opened and set to the second opening to allow the test sample to flow normally.

[0119] If the second difference is non-zero, it means that the influence of the current condensed water content is within the uncontrollable range. The control database is searched again and the heating module 8 is used for heating again until the difference is zero, so that the normal flow of the test sample can be controlled.

[0120] This method controls the opening of the control valve 4 by detecting the condensed water content and the difference therebetween, thereby controlling the flow rate of the test sample, providing sufficient time for the test sample to heat up, and avoiding the entrainment of condensed water during the transmission process, which may affect the authenticity and accuracy of the final measurement result.

[0121] Furthermore, the method further comprises the following steps:

[0122] An image set of the sampling port 5 is acquired; the image set includes: a plurality of images of consecutive positions of the inner wall of the sampling port 5; wherein the images can be acquired by a camera.

[0123] Traverse the image collection and identify the contaminated area in each image;

[0124] The contaminated area is purged in a direction according to the position of the inner wall of the sampling port 5 corresponding to the contaminated area.

[0125] The contaminated area is purged in a directional manner according to the position of the inner wall of the sampling port 5 corresponding to the contaminated area, specifically including the following steps:

[0126] Identify the contaminated area of ​​all contaminated areas;

[0127] Sort all polluted areas in descending order of pollution area to obtain the first sequence;

[0128] Obtain the straight-line distance between the center point of all the contaminated areas in the first sequence and the central axis of the glass furnace chimney 2;

[0129] Adjust the first sequence in descending order of linear distance to obtain the second sequence;

[0130] The contaminated areas are purged one by one in the order of the second sequence.

[0131] Through the above scheme, the contaminated areas are sorted in order of pollution area from large to small and in order of the straight-line distance between the center point and the central axis of the glass kiln chimney 2 from large to small, so as to avoid carrying edge pollutants into the interior when cleaning the internal area of ​​the sampling port 5, resulting in a longer cleaning cycle. In addition, the above-mentioned regular cleaning scheme can also effectively reduce the factors that affect the accuracy of the detection results, thereby ensuring the reliability and accuracy of the detection of pollutants in the glass kiln chimney.

[0132] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. An online contaminant detection system for glass production, characterized in that: include: A plurality of detection subsystems (1), wherein different detection subsystems (1) are used to detect different characteristics of a detection sample in a glass furnace chimney (2); A sampling unit, the sampling unit being arranged between the detection subsystem (1) and the glass furnace chimney (2); the sampling unit at least comprising: A sampling pipeline (3), the sampling pipeline (3) having an input end and a plurality of output ends that are interconnected; the output ends are in one-to-one correspondence with and connected to the detection subsystem (1); a control valve (4) is provided on the sampling pipeline (3) for controlling the on-off of the sampling pipeline (3); A sampling port (5), the sampling port (5) is provided on the side wall of the glass furnace chimney (2), and the sampling port (5) is connected to the input end; the central axis of the sampling port (5) forms a first angle with a first reference line, and the opening of the first angle faces the output end; the first reference line is perpendicular to the central axis of the glass furnace chimney (2) and is arranged parallel to the central axis of the sampling pipeline (3); a condensed water collection pool (6), the condensed water collection pool (6) being arranged on the inner wall of the glass furnace chimney (2) and being located below the sampling port (5); the condensed water collection pool (6) being in communication with the external environment via a conduit (7); When condensed water is generated at the sampling port (5), the condensed water flows back from the sampling port (5) to the condensed water collection pool (6) and is discharged through the conduit (7); The sampling unit further comprises a heating module (8), the heating module (8) being arranged at the connection position between the sampling port (5) and the input end, and the heating module (8) being used to heat the detection sample in the sampling port (5).

2. The online contaminant detection system for glass production according to claim 1, characterized in that: The sampling unit further comprises: A temperature detection module (9), the temperature detection module (9) being arranged at the sampling port (5), and the temperature detection module (9) being used to measure the temperature of a detection sample in the sampling port (5); A processing module (10), the processing module (10) is communicatively connected with the heating module (8) and the temperature detection module (9), and the processing module (10) is used to control the heating degree of the heating module (8) according to the temperature measured by the temperature detection module (9).

3. The online contaminant detection system for glass production according to claim 2, characterized in that: The sampling unit further comprises: A heat preservation module (11) is provided on the outer wall of the sampling pipeline (3) and at the connection position between the sampling port (5) and the input end, and is used to keep the test sample warm.

4. The online contaminant detection system for glass production according to claim 2, characterized in that: The sampling unit further comprises: a humidity detection module (12), the humidity detection module (12) being arranged at the sampling port (5) and being in communication connection with the processing module (10), the humidity detection module (12) being used to measure the humidity of a test sample in the sampling port (5); An early warning module (13) is communicatively connected to the processing module (10), and the early warning module (13) is used to issue a first warning message when the processing module (10) determines that the humidity measured by the humidity detection module (12) exceeds a preset humidity range.

5. A method for online detection of contaminants for glass production, implemented based on the online detection system for contaminants for glass production according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: Obtaining a first condensed water content of the test sample at the sampling port (5); Calculating a difference between the first condensed water content and a preset content to obtain a first difference value; When the first difference is a non-zero value, the control valve (4) on the sampling pipeline (3) is adjusted to be at a first opening; the first opening is used to allow the test sample to flow slowly; Calling a control database, and searching the control database for a content difference range in which the absolute value of the first difference lies, to obtain a corresponding heating rate; the control database includes: a plurality of content difference ranges and corresponding heating rates; According to the heating rate, controlling the heating module (8) to heat the connection position between the sampling port (5) and the input end; obtaining a second condensed water content of the test sample; calculating a difference between the second condensed water content and the preset content to obtain a second difference value; When the second difference is zero, the control valve (4) is adjusted to a second opening; the second opening is greater than the first opening; the second opening is used to allow the test sample to flow normally.

6. The method for online detection of pollutants for glass production according to claim 5, characterized in that: Obtaining the first condensed water content of the test sample at the sampling port (5) specifically includes the following steps: When the control valve (4) is in a closed state, obtaining the initial condensed water content of the test sample; the initial condensed water content is greater than the first condensed water content and greater than the second condensed water content; When the initial condensed water content is greater than or equal to the set condensed water content, the test sample exiting the sampling port (5) is dried and the condensed water content is obtained again; If the current condensed water content is less than the set condensed water content, the current condensed water content is recorded as the first condensed water content.

7. The method for online detection of pollutants for glass production according to claim 5, characterized in that: Before obtaining the first condensed water content of the test sample at the sampling port (5), the following steps are also included: Obtaining a first temperature value inside the glass furnace chimney (2) and a second temperature value inside the sampling pipe (3) near the output end at the same historical moment; Calculating a difference between the first temperature value and the second temperature value to obtain a first temperature difference value; If the first temperature difference is greater than or equal to a preset temperature difference, the heating module (8) is controlled to heat the sampling pipeline (3) and the connection between the sampling pipeline (3) and the sampling port (5) according to the first set temperature; collecting a third temperature value inside the sampling pipeline (3) near the output end; Calculating a difference between the first temperature value and the third temperature value to obtain a second temperature difference value; If the second temperature difference is less than the preset temperature difference, the step of obtaining the first condensed water content of the test sample at the sampling port (5) is performed.

8. The method for online detection of pollutants for glass production according to claim 5, characterized in that: The following steps are also included: Acquire an image set of the sampling port (5); the image set includes: a plurality of images of consecutive positions of the inner wall of the sampling port (5); Traversing the image collection and identifying a contaminated area in each image; The contaminated area is purged in a direction according to the position of the inner wall of the sampling port (5) corresponding to the contaminated area.

9. The method for online detection of pollutants for glass production according to claim 8, characterized in that: According to the position of the inner wall of the sampling port (5) corresponding to the contaminated area, the contaminated area is purged in a directional manner, specifically comprising the following steps: Identify the contaminated area of ​​all said contaminated areas; Sort all polluted areas in descending order of the polluted area to obtain a first sequence; Obtaining the straight-line distance between the center points of all the contaminated areas in the first sequence and the central axis of the glass furnace chimney (2); Adjust the first sequence according to the order of the linear distance from large to small to obtain a second sequence; The contaminated areas are directionally purged one by one according to the order of the second sequence.

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