Pollutant on-line detection system and detection method for glass production

Abstract

The invention discloses an online pollutant detection system and method for glass production, and relates to the technical field of pollutant detection, the system comprises a plurality of detection subsystems used for detecting different characteristics of detection samples in a chimney of a glass kiln; the sampling unit is arranged between the detection subsystem and the chimney of the glass kiln; comprising a sampling pipeline which is provided with an input end and a plurality of output ends; the output ends and the detection subsystems are in one-to-one correspondence and are connected; a control valve is arranged on the sampling pipeline; the sampling port is formed in the side wall of the chimney of the glass kiln and is communicated with the input end; the central axis of the sampling port and the first datum line form a first included angle; the condensate water collecting pool is arranged on the inner wall of the chimney of the glass kiln and is positioned below the sampling opening; the condensate water collecting tank is communicated with the external environment through a guide pipe; when condensate water is generated at the sampling port, the condensate water flows back to the condensate water collecting pool from the sampling port and is discharged through the guide pipe. The subsequent measurement accuracy is prevented from being influenced by condensed water entrained in a detection sample.

Description

Technical Field

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

[0002] For glass production furnaces, sample gas is extracted from the chimney to detect whether pollutants are generated during production. Existing online detection systems are generally composed of gaseous pollutant detection subsystems, smoke detection subsystems, flue gas parameter detection subsystems, and data acquisition and processing subsystems. However, for any of the aforementioned detection subsystems, during the actual flue gas sampling process, changes in flue gas temperature and ambient temperature will cause condensed water to appear in the flue gas. Condensed water will cause fluctuations in the measurement data of the measurement subsystem, resulting in measurement errors. It is necessary to solve the problem of condensed water entrained in the flue gas during sampling.

[0003] At present, a heating device is usually added to the sampling gun to ensure the constant temperature of the sampled flue gas; however, it cannot solve the problem of temperature difference at the sampling port. With the change of ambient temperature, especially when the weather temperature drops suddenly, the temperature difference at the sampling port will also rise suddenly, generating condensed water, which will still make the measurement data inaccurate. Therefore, we propose an online detection system and method for pollutants in glass production to solve the above problems. Summary of the invention

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

[0005] In a first aspect, the present application provides an online contaminant detection system for glass production, comprising: A plurality of detection subsystems, different detection subsystems are used to detect different characteristics of the detection sample in the chimney of the glass furnace; A sampling unit, the sampling unit is arranged between the detection subsystem and the glass furnace chimney; the sampling unit at least comprises: A sampling pipeline, wherein the sampling pipeline has an input end and multiple output ends that are interconnected; the output ends correspond to and are connected to the detection subsystem one by one; a control valve is provided on the sampling pipeline to control the on and off of the sampling pipeline; A sampling port, the sampling port is opened on the side wall of the glass furnace chimney, and the sampling port is connected to the input end; the central axis of the sampling port 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 and is arranged parallel to the central axis of the sampling pipeline; A condensed water collection pool, which is arranged on the inner wall of the glass furnace chimney and is located below the sampling port; the condensed water collection pool is connected to the external environment through a conduit; 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.

[0006] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes: A heating module, the heating module is arranged at the connection position between the sampling port and the input end, and the heating module is used to heat the detection sample in the sampling port; A temperature detection module, the temperature detection module is arranged at the sampling port, and the temperature detection module is used to measure the temperature of the detection sample in the sampling port; A processing module, wherein the processing module is in communication with the heating module and the temperature detection module, and the processing module is used to control the heating degree of the heating module according to the temperature measured by the temperature detection module.

[0007] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes: A heat preservation module is arranged 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.

[0008] According to the technical solution provided in the embodiment of the present application, the sampling unit further includes: A humidity detection module, which is disposed at the sampling port and is in communication with the processing module, and is used to measure the humidity of the test sample in the sampling port; An early warning module is communicatively connected with the processing module, and is used for issuing a first warning message when the processing module determines that the humidity measured by the humidity detection module exceeds a preset humidity range.

[0009] In a second aspect, the present application provides an online detection method for contaminants in glass production, which is implemented based on the above-mentioned online detection system for contaminants in glass production. The method comprises the following steps: Obtaining a first condensed water content of the test sample at the sampling port; Calculating the 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, adjusting the control valve on the sampling pipeline to a first opening; Calling a control database, and searching the control database for a content difference range in which the absolute value of the first difference value is located, 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 to heat the connection position between the sampling port and the input end; Obtaining a second condensed water content of the test sample; Calculating the 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 is adjusted to a second opening; the second opening is greater than the first opening.

[0010] 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: 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; When the initial condensed water content is greater than or equal to the set condensed water content, drying the test sample from the sampling port and obtaining the condensed water content 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.

[0011] 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: 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; Calculating the 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, 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; Collecting a third temperature value of the interior of the sampling pipeline close to 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 is performed.

[0012] According to the technical solution provided in the embodiment of the present application, the following steps are also included: 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; Traversing the image set and identifying a contaminated area of ​​each image; The contaminated area is purged directionally according to the position of the inner wall of the sampling port corresponding to the contaminated area.

[0013] According to the technical solution provided in the embodiment of the present application, the contaminated area is purged directionally according to the inner wall position of the sampling port corresponding to the contaminated area, specifically comprising the following steps: Identify the contaminated area of ​​all said contaminated areas; Sorting all polluted areas in descending order of the polluted area to obtain a first sequence; Obtaining 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; Adjust the first sequence according to the order of the straight-line 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.

[0014] It can be seen from the above technical solution that the present application has at least the following beneficial effects: The present application discloses an online detection system for pollutants used in glass production, the system comprising: a plurality of detection subsystems, different detection subsystems are used to detect different characteristics of detection samples in a glass kiln chimney; a sampling unit is arranged between the detection subsystem and the glass kiln chimney, specifically, the sampling unit at least comprises: 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 a 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 arranged on the inner wall of the glass kiln chimney, and it is located below the sampling port, 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.

[0015] The central axis of the sampling port of the 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

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the structure of an online contaminant detection system for glass production.

[0018] Figure 2 This is a schematic diagram of the structure of the sampling port.

[0019] Figure 3 Schematic diagram of the process of online detection of contaminants for glass production.

[0020] Figure 4 Schematic diagram of the pretreatment process before online detection of pollutants in glass production.

[0021] 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

[0022] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present 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.

[0024] In order to make the description of the following embodiments clear and concise, a brief introduction to the related technology is first given: The existing online monitoring system consists of a gaseous pollutant detection subsystem, a smoke detection subsystem, a smoke 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, etc. in the chimney of the glass kiln. It is generally measured by combining a spectroscopic photoharmonic gas analyzer with a sampling preprocessing system. Among them, the spectral gas analyzer consists of a spectrometer, a lamp, and key components of a gas chamber; the smoke detection subsystem is mainly used to detect particulate matter in the chimney of the glass kiln. It generally uses a laser backscattering smoke meter to measure the concentration of dust in the flue gas using the laser backscattering principle, or uses an extraction 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 chimney of the glass kiln. The data acquisition and processing subsystem is mainly used to control the sample collection, data processing, and analysis between each detection subsystem and the chimney of the glass kiln.

[0025] 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 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.

[0026] In order to make the online contaminant detection system for 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, this figure is a structural schematic diagram of an online contaminant detection system for glass production provided in an embodiment of the present application, the system comprising: Multiple detection subsystems 1, different detection subsystems 1 are used to detect different characteristics of the detection sample in the glass furnace chimney 2; wherein the detection subsystem 1 refers to the gaseous pollutant detection subsystem, the smoke detection subsystem, the smoke parameter detection subsystem, etc. The purpose and implementation means of each detection subsystem have been briefly described in the relevant introduction, and will not be repeated here. Here, the detection sample refers to the smoke sample required for the detection.

[0027] The sampling unit is arranged between the detection subsystem 1 and the glass furnace chimney 2; the sampling unit at least comprises: 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.

[0028] 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 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 arranged 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 specifications of the actual glass kiln chimney 2 and the specifications of the sampling pipeline 3 and the relative positions of the two.

[0029] 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 condensed water collection pool 6, and the condensed water collection pool 6 can receive the condensed water flowing out of the sampling port 5 and discharge it to the external environment regularly through the conduit 7. A drain valve is installed on the conduit 7 to control the connection and disconnection between the condensed water collection pool 6 and the external environment.

[0030] 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 .

[0031] The central axis of the sampling port 5 of the present system is designed to form a first angle with the first reference line. When the detection subsystem 1 needs to obtain a detection sample, the control valve 4 is opened, and the detection 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 detection sample passes through the sampling port 5. At this time, the condensed water is introduced into the condensed water collection pool 6 by using the inclined sampling port 5 to avoid condensed water being entrained in the detection sample and affecting the measurement accuracy of the corresponding detection subsystem 1.

[0032] Furthermore, the sampling unit also includes: The heating module 8 is disposed at the connection position between the sampling port 5 and the input end, and is used to heat the detection sample in the sampling port 5; wherein the type of the heating module 8 is, for example, an electric heating device.

[0033] The temperature detection module 9 is disposed at the sampling port 5 and is used to measure the temperature of the detection sample in the sampling port 5 ; the type of the temperature detection module 9 is, for example, a temperature sensor.

[0034] The processing module 10 is in communication with the heating module 8 and the temperature detection module 9. 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. The model of the processing module 10 is, for example, Siemens S7-1500 CPU 6ES7531-7KF00-0AB0.

[0035] The temperature of the test sample at the sampling port 5 is measured in real time by the temperature detection module 9. The processing module 10 controls the degree of heating of the test sample by the heating module 8 according to 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 time of the test sample. By heating the test sample, the temperature difference between the sampling port 5, the sampling pipeline 3 and the external environment is reduced, thereby helping to reduce the risk of condensation water in the test sample.

[0036] Furthermore, the sampling unit also includes: 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.

[0037] 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, thereby insulating 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.

[0038] Furthermore, the sampling unit also includes: Humidity detection module 12, the humidity detection module 12 is arranged at the sampling port 5 and is in communication connection with the processing module 10, and the humidity detection module 12 is used to measure the humidity of the detection sample in the sampling port 5; wherein the type of the humidity detection module 12 is, for example, a humidity sensor.

[0039] The early warning module 13 is connected to the processing module 10 in communication. 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. The type of the early warning module 13 is, for example, a warning light or an alarm.

[0040] The real-time humidity of the test sample is measured regularly by the humidity detection module 12. If the real-time humidity exceeds the 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 to remind the staff that there is condensed water in the current equipment and system, and it is necessary to close the control valve 4 and adjust the heating degree of the heating module 8. After the adjustment, the test sample is collected again to ensure the authenticity and accuracy of the final measurement result. Here, the preset humidity range can be set according to actual needs.

[0041] The present application provides an online detection method for pollutants in glass production, which is implemented based on the above-mentioned online detection system for pollutants in glass production. Figure 3 and Figure 4 As shown, the method comprises the following steps: 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.

[0042] The same historical moment refers to a temperature collection moment when the device and the system are working and the temperature is closest to the current detection moment. Here, the first temperature value and the second temperature value can both be collected by a temperature sensor.

[0043] S002. Calculate the difference between the first temperature value and the second temperature value to obtain a first temperature difference value.

[0044] The first temperature difference is used to characterize the temperature difference between the inside of the glass furnace chimney 2 and the sampling pipeline 3 .

[0045] S003 . If the first temperature difference is greater than or equal to the 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.

[0046] Among them, if the first temperature difference is greater than or equal to the preset temperature difference, it indicates that condensation water is easy to appear when the test sample is transferred according to the current situation, which affects the accuracy of the measurement result. Therefore, it is necessary to heat the sampling pipeline 3 and the connection between the sampling pipeline 3 and the sampling port 5, and give priority to solving the problem of condensation water appearing in the test sample due to the temperature difference between the sampling pipeline 3 and the glass kiln chimney 2. In addition, the heating method also isolates the influence of the temperature of the external environment on the test sample, and minimizes the risk of condensation water. Here, the preset temperature difference and the first set temperature can be set according to actual needs; 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 then step S004 is executed.

[0047] S004. Collect a third temperature value inside the sampling pipeline 3 close to the output end.

[0048] The third temperature value may be acquired by using a temperature sensor.

[0049] S005. Calculate the difference between the first temperature value and the third temperature value to obtain a second temperature difference value.

[0050] The second temperature difference is used to characterize the temperature difference generated during the transfer of the detection sample from the input end to the output end of the sampling pipeline 3 .

[0051] S006 , if the second temperature difference is less than the preset temperature difference, obtaining the first condensed water content of the test sample at the sampling port 5 .

[0052] If the second temperature difference is greater than or equal to the preset temperature difference, it indicates that condensation is likely to occur when the test sample is transferred according to the current situation, which affects the accuracy of the measurement result. An insulation module, i.e., an insulation layer, may 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 from occurring during the transfer process, which could affect the measurement accuracy.

[0053] S100 , obtaining a first condensed water content of the test sample at the sampling port 5 .

[0054] The step of 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, 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.

[0055] When the initial condensed water content is greater than or equal to the set condensed water content, the test sample from the sampling port 5 is dried and the condensed water content is obtained 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 result and needs to be handled by the staff in a timely manner.

[0056] 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.

[0057] S101. Calculate the difference between the first condensed water content and the preset content to obtain a first difference value.

[0058] Among them, the preset content can be set according to actual needs.

[0059] S102: When the first difference is a non-zero value, the control valve 4 on the sampling pipeline 3 is adjusted to a first opening.

[0060] 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.

[0061] 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.

[0062] Among them, the first difference is a non-zero value, which can be a positive number or a negative number. The corresponding heating rate is obtained by looking up 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 tend to increase gradually. Similarly, the values ​​represented by W1 to W3 are also different and tend to increase gradually.

[0063] Table 1 Regulation database

[0064] 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.

[0065] 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.

[0066] S105, obtaining a second condensed water content of the test sample.

[0067] The second condensed water content can be collected using a humidity sensor.

[0068] S106. Calculate the difference between the second condensed water content and the preset content to obtain a second difference value.

[0069] S107. When the second difference is zero, the control valve 4 is regulated to be at a second opening; the second opening is greater than the first opening.

[0070] 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.

[0071] 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.

[0072] 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, in order to provide sufficient time for the temperature rise of the test sample and avoid entrainment of condensed water during the transmission process, which may affect the authenticity and accuracy of the final measurement result.

[0073] Furthermore, the method further comprises the following steps: An image set of the sampling port 5 is obtained; 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.

[0074] Traverse the image collection and identify the contaminated area of ​​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.

[0075] According to the inner wall position of the sampling port 5 corresponding to the contaminated area, the contaminated area is purged directionally, specifically including the following steps: Identify the contaminated area of ​​all contaminated areas; Sort all polluted areas in descending order of pollution area to obtain the first sequence; 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; Adjust the first sequence in descending order of linear distance to obtain the second sequence; The contaminated areas are directed and purged one by one in the order of the second sequence.

[0076] Through the above scheme, the contaminated areas are sorted in the order of pollution area from large to small and 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.

[0077] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An online contaminant detection system for glass production, characterized in that: include: A plurality of detection subsystems (1), different detection subsystems (1) are used to detect different characteristics of the detection sample in the chimney (2) of the glass furnace; A sampling unit, the sampling unit is arranged between the detection subsystem (1) and the glass furnace chimney (2); the sampling unit at least comprises: A sampling pipeline (3), wherein the sampling pipeline (3) has an input end and a plurality of output ends which are interconnected; the output ends correspond to and are connected to the detection subsystem (1) in a one-to-one manner; and a control valve (4) is provided on the sampling pipeline (3) for controlling the on and 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 connected to 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).

2. The online contaminant detection system for glass production according to claim 1, characterized in that: The sampling unit also includes: A heating module (8), the heating module (8) being arranged at a connection position between the sampling port (5) and the input end, the heating module (8) being used to heat a detection sample in the sampling port (5); 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) being communicatively connected with the heating module (8) and the temperature detection module (9), the processing module (10) being used to control the degree of heating 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 also includes: A heat preservation module (11), the heat preservation module (11) being arranged on the outer wall of the sampling pipeline (3) and at the connection position between the sampling port (5) and the input end, the heat preservation module (11) being used for keeping the test sample warm.

4. The on-line detection system for contaminants in glass production according to claim 2, characterized in that: The sampling unit also includes: a humidity detection module (12), the humidity detection module (12) being arranged at the sampling port (5) and being communicatively connected with the processing module (10), the humidity detection module (12) being used to measure the humidity of the detection sample in the sampling port (5); An early warning module (13), the early warning module (13) being communicatively connected to the processing module (10), the early warning module (13) being 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. An online detection method for contaminants in glass production, implemented based on an online detection system for contaminants in 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 the 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, adjusting the control valve (4) on the sampling pipeline (3) to be at a first opening; Calling a control database, and searching the control database for a content difference range in which the absolute value of the first difference value is located, 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 the 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.

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 comprises the following steps: When the control valve (4) 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; 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 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; Calculating the 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, controlling 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; collecting a third temperature value inside the sampling pipeline (3) close to 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: Acquiring an image set of the sampling port (5); the image set comprising: a plurality of images of consecutive positions of the inner wall of the sampling port (5); Traversing the image set and identifying a contaminated area of ​​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 inner wall position 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; Sorting all polluted areas in descending order of the polluted area to obtain a first sequence; Obtaining 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); Adjust the first sequence according to the order of the straight-line 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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